A drawer-type microwave oven

Abstract

The utility model provides a kind of drawer type microwave oven, including top plate, back plate, the top plate includes the first inclined plate being inclined downward and being close to the back plate, the first inclined plate is arranged limiting gap;Power cord, the power cord is stretched out through the limiting gap;Cover plate, the cover plate is respectively with the first inclined plate, back plate detachably connected, for with the limiting gap each other cooperation to the power cord is limited assembly.The drawer type microwave oven can hide cable using the first inclined plate, improve overall aesthetic appearance;Through detachable cover plate, power cord repair or replacement can be completed without the need to disassemble the shell of microwave oven when maintaining, greatly improve dismounting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and more specifically, to a drawer-type microwave oven. Background Technology

[0002] With the increasing demand for integrated kitchen appliances and space optimization, drawer-type microwave ovens, with their built-in installation and space-saving features, have gradually become an important piece of equipment in modern home and commercial kitchens. Among them, drawer-type microwave ovens with hot air circulation components are widely favored for their ability to diversify cooking functions and enhance the aesthetics of the kitchen.

[0003] For drawer-type microwave ovens, the power cord needs to pass through the casing and connect to the internal components to deliver power. Currently, most power cords are routed from the top or rear of the casing. If the power cord were to pass directly through the hole at the rear, it would not only create a large gap between the casing and the rear of the recessed space, but also make the appliance prone to wobbling and potentially affecting its operational stability if the assembly is not secure.

[0004] To address this, Chinese patent CN1222726C uses an opening on the top panel of the furnace body to lead out the power cord, and relies on a detachable cover plate and screw fixing structure for assembly. While this solution ensures a secure and reliable assembly, it requires high installation precision, resulting in low assembly efficiency. Over time, loosening may occur, potentially affecting the reliability of the connection.

[0005] In view of the above, this utility model is hereby proposed. Utility Model Content

[0006] The problem solved by this invention is that the power cord of existing drawer-type microwave ovens has low installation efficiency, and may become loose or even affect the stability of operation after long-term use.

[0007] To solve the above problems, this utility model provides a drawer-type microwave oven, comprising:

[0008] A top plate and a rear side plate, wherein the top plate includes a first inclined plate that is close to the rear side plate and inclined downward, and the first inclined plate is provided with a limiting notch;

[0009] A power cord, which extends through the limiting notch;

[0010] The cover plate is detachably connected to the first inclined plate and the rear side plate, and is used to cooperate with the limiting notch to limit the assembly of the power line.

[0011] This design allows the power cord to exit through the first inclined plate, avoiding the near 90-degree bends that are common in conventional designs. It also conceals the cable, improving the overall aesthetics. Furthermore, the detachable cover allows for non-destructive disassembly and assembly, enabling power cord repair or replacement without completely disassembling the microwave oven's casing, reducing maintenance time by over 60%. The assembly of the cover with the first inclined plate and rear side plate simplifies the power cord installation process, requiring only a single screw, significantly improving assembly efficiency.

[0012] Preferably, a fixing member is provided on the power line. The fixing member includes a limiting plate and a baffle that are parallel to each other and spaced apart. The baffle is located above the limiting plate and a limiting groove is formed between the two. The limiting groove is inserted into the circumferential sidewall of the limiting notch from at least two directions.

[0013] This design creates a "double-track clamping" structure between the limiting plate and the baffle, which significantly reduces the displacement of the power cord in the X / Y / Z axes, greatly improving its resistance to displacement compared to the traditional single-point snap-fit ​​structure. The bidirectional plug-in structure eliminates the need for visual alignment during assembly, significantly increasing the first-pass yield rate on the production line and substantially reducing rework costs.

[0014] Preferably, protrusions are provided on both sides of the limiting notch, and the protrusions are interference-fitted with the limiting groove. This feature can improve the assembly reliability of the fastener and the limiting notch and prevent them from falling out at will.

[0015] Preferably, a protective ring is provided around the power cord, located at the end of the limiting plate away from the baffle. The protective ring, the limiting plate, and the protective ring are integrally formed. This design reduces the stress concentration factor of the power cord at the bending point by 76%, and the bending life exceeds 100,000 cycles according to the UL758 standard test.

[0016] Preferably, the cover plate has a notch for engaging with the power cord, and a limiting member is provided above the notch, which engages with the upper surface of the baffle to limit its movement. This arrangement allows the cover plate to limit the power cord and / or the fixing member in both the direction of the first inclined surface and the vertical direction, preventing them from coming out.

[0017] Preferably, the first inclined plate is provided with an insertion hole, and the cover plate is provided with an insertion piece at a position corresponding to the insertion hole. The insertion piece is inserted and assembled into the insertion hole; the cover plate is assembled to the rear side plate with screws on the side away from the insertion hole. This arrangement, through the pre-positioning structure of the insertion piece and the insertion hole and the single screw fixation, significantly reduces the installation time of traditional multi-screw assembly. Installation can be achieved by simply inserting the insertion piece into the insertion hole and pushing it forward, making the operation simple and convenient.

[0018] Preferably, the first inclined plate has an installation notch at one end near the rear side plate, the installation notch is connected to the limiting notch, the top of the rear side plate has a folded edge, the folded edge protrudes upward at a position corresponding to the installation notch to form an installation protrusion, the installation protrusion has a mating hole, the cover plate has an assembly hole, and the mating hole and the assembly hole are assembled by a screw.

[0019] This design utilizes the cooperation between the mounting protrusion and the mounting notch to achieve pre-positioning, improving the assembly efficiency between the top plate and the rear side plate; the mounting notch provides sufficient displacement space for the power cable, and after removing the cover plate, the power cable can be quickly disassembled by applying force to one side of the mounting notch.

[0020] Preferably, the first inclined plate is provided with a boss, which is located on the outer periphery of the mounting notch and the limiting notch. This arrangement can enhance the mechanical strength of the first inclined plate, while ensuring that the cover plate remains basically flat with the boss after assembly, resulting in a more aesthetically pleasing overall appearance.

[0021] Preferably, the drawer-type microwave oven further includes a heat-insulating cavity assembly, which includes a cooking cavity and a heat-insulating rack. A hot air assembly is provided on the top or side of the cooking cavity for heating and driving the air circulation within the cooking cavity. The heat-insulating rack covers the hot air assembly and at least partially covers the cooking cavity. A heat-insulating element is provided between the heat-insulating rack and the cooking cavity.

[0022] This design effectively prevents heat from the cooking cavity from being transferred to the outside by using heat insulation components, thus playing a role in heat insulation and significantly reducing the heat dissipation difficulty of external electrical components in the cooking cavity. A single fan assembly can meet the heat dissipation needs of components such as the magnetron. At the same time, it can also concentrate heat in the cooking cavity, ensuring a good heating rate inside the cavity, and can reach the required cooking temperature relatively quickly.

[0023] Preferably, the drawer-type microwave oven further includes a bottom plate, the bottom plate being provided with a first air inlet structure and / or a second air inlet structure, the cooking cavity including a cavity front plate, the cavity front plate being provided with an air outlet structure on the side near the fan assembly, and the drawer-type microwave oven further includes a baffle plate, the baffle plate being located below the air outlet structure and extending horizontally forward.

[0024] This design conceals the gap between the bottom of the drawer-type microwave oven and the built-in space, improving its aesthetics; at the same time, the baffle prevents the exhaust air from flowing back into the casing from the bottom, ensuring good heat dissipation.

[0025] Compared with the prior art, the drawer-type microwave oven described in this embodiment of the invention has the following beneficial effects: 1) This application can hide the cables, improving the overall aesthetics; 2) The "double-track clamping" structure formed by the limiting plate and the baffle greatly reduces the displacement of the power cord in the X / Y / Z three-axis directions, and significantly improves the anti-displacement capability compared with the traditional single-point buckle structure; 3) The bidirectional plug-in structure eliminates the need for visual alignment during the assembly process, greatly improves the first-pass yield rate of production line installation, and significantly reduces rework costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the drawer-type microwave oven described in this utility model;

[0027] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0028] Figure 3 for Figure 2 A partial exploded view of the power cord being assembled with the top plate;

[0029] Figure 4 This is a schematic diagram of the drawer-type microwave oven of this utility model in the open state;

[0030] Figure 5 This is a schematic diagram of the structure of the drawer-type microwave oven of this utility model with the rear side panel hidden;

[0031] Figure 6 This is a schematic diagram of the structure of the drawer-type microwave oven described in this utility model on the rear side of the hidden top plate;

[0032] Figure 7 This is a schematic diagram of the structure of the drawer-type microwave oven described in this utility model after the left side panel is hidden;

[0033] Figure 8 for Figure 1 A schematic diagram of the longitudinal interface along side AA;

[0034] Figure 9 This is a schematic diagram of the internal structure of the drawer-type microwave oven described in an embodiment of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100-Box body; 101-First air inlet structure; 102-Second air inlet structure; 10-Shell shell; 11-Top plate; 111-First inclined plate; 112-Boss; 113-Mounting notch; 114-Limiting notch; 115-Protrusion; 116-Insertion hole; 12-Left side plate; 13-Right side plate; 14-Rear side plate; 141-Protrusion; 142-Folded edge; 1421-Mounting protrusion; 15-Bottom plate; 16-Partition plate; 17-Mounting plate; 18-Cover plate; 181-Insertion piece; 182-Notch; 183-Limiting component; 184-Assembly hole; 19-Wind deflector; 20-Cooking cavity; 21-Cavity rear plate; 211-Air guide 22-Cavity front panel; 221-Air outlet structure; 23-U-shaped frame; 231-First air inlet; 232-First air outlet; 24-Cavity bottom plate; 25-Air duct; 26-Heat insulation frame; 27-Power cord; 28-Fixing component; 281-Limiting plate; 282-Baffle; 283-Limiting groove; 284-Protective ring; 30-First cavity; 31-Fan assembly; 40-Second cavity; 41-Magnetron; 42-Electrical control board; 50-Hot air assembly; 51-Circulation assembly; 52-Heating assembly; 60-Lighting assembly; 70-Drive motor; 80-Guide rail assembly; 90-Waveguide box; 200-Door assembly; 300-Control box. Detailed Implementation

[0037] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0038] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do 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 one or more embodiments or examples.

[0041] Example 1

[0042] like Figure 1-3 As shown, a drawer-type microwave oven includes a top plate 11 and a rear side plate 13. The top plate 11 includes a first inclined plate 111 that is close to the rear side plate 13 and inclined downward. The first inclined plate 111 is provided with a limiting notch 114.

[0043] Power cord 27, which extends through the limiting notch 114;

[0044] The cover plate 18 is detachably connected to the first inclined plate 111 and the rear side plate 14, and is used to cooperate with the limiting notch 114 to limit the assembly of the power line 27.

[0045] This design allows the power cord 27 to pass through the first inclined plate 111, avoiding the near 90-degree bend that is common in conventional designs. It also conceals the cable, improving the overall aesthetics. Furthermore, the detachable design of the cover plate 18 allows for non-destructive disassembly and assembly. During maintenance, the power cord 27 can be inspected or replaced without completely disassembling the microwave oven casing 10, reducing maintenance time by more than 60%. The assembly of the cover plate 18 with the first inclined plate 111 and the rear side plate 14 simplifies the installation steps of the power cord 27, allowing assembly to be completed with just one screw, significantly improving assembly efficiency.

[0046] Preferably, a fixing member 28 is provided on the power cord 27. The fixing member 28 includes a limiting plate 281 and a baffle 282 that are parallel to each other and spaced apart. The baffle 282 is located above the limiting plate 281 and a limiting groove 283 is formed between the two. The limiting groove 283 is inserted and assembled with the circumferential sidewall of the limiting notch 114 from at least two directions.

[0047] This design enables the "double-track clamping" structure formed by the limiting plate 281 and the baffle 282 to significantly reduce the displacement of the power cable 27 in the X / Y / Z three-axis directions, greatly improving its anti-displacement capability compared to the traditional single-point snap-fit ​​structure; the bidirectional plug-in structure eliminates the need for visual alignment during assembly, significantly improving the first-pass yield rate on the production line and significantly reducing rework costs.

[0048] As an example of the present invention, protrusions 115 are provided on both the left and right sides of the limiting notch 114, and the protrusions 115 are interference-fitted with the limiting groove 283. This arrangement can improve the assembly reliability of the fastener 28 and the limiting notch 114 and prevent them from falling out at will.

[0049] As an example of this utility model, a protective ring 284 is provided around the power cord 27. The protective ring 284 is located at the end of the limiting plate 281 away from the baffle 282, and the protective ring 284, the limiting plate 281, and the protective ring 284 are integrally formed. This arrangement reduces the stress concentration factor of the power cord 27 at the bending point by 76%, and the bending life exceeds 100,000 cycles according to the UL758 standard test.

[0050] As an example of this utility model, the first inclined plate 111 is provided with a socket 116, and the cover plate 18 is provided with a connecting piece 181 at a position corresponding to the socket 116. The connecting piece 181 is inserted into the socket 116. The cover plate 18 is connected to the rear side plate 14 by screws on the side away from the socket 116. This arrangement, through the pre-positioning structure of the connecting piece 181 and the socket 116, and the single-screw fixing method, greatly shortens the installation time of traditional multi-screw assembly. Installation can be achieved by inserting the connecting piece 181 into the socket 116 and pushing it forward, which is simple and convenient to operate.

[0051] Preferably, there are two insertion holes 116 located on the left and right sides of the limiting notch 114. This arrangement improves the reliability of the connection with the first inclined plate 111, while also preventing the cover plate 18 from shifting left and right, and reducing the assembly difficulty of the cover plate 18 and the rear side plate 14.

[0052] Preferably, the first inclined plate 111 has an installation notch 113 at one end near the rear side plate 14, the installation notch 113 is connected to the limiting notch 114, the top of the rear side plate 14 has a folded edge 142, the folded edge 142 protrudes upward at the position corresponding to the installation notch 113 to form an installation protrusion 1421, the installation protrusion 1421 has a mating hole, the cover plate 18 has an assembly hole 184, the mating hole and the assembly hole 184 are assembled by a screw.

[0053] This setup utilizes the cooperation between the mounting protrusion 1421 and the mounting notch 113 to achieve pre-positioning, thereby improving the assembly efficiency between the top plate 11 and the rear side plate 14. The mounting notch 113 provides sufficient displacement space for the power cable 27, allowing for quick disassembly by applying force to the power cable 27 towards the mounting notch 113 after removing the cover plate 18.

[0054] Preferably, the first inclined plate 111 is provided with a boss 112, which is located on the outer periphery of the mounting notch 113 and the limiting notch 114. This arrangement can enhance the mechanical strength of the first inclined plate 111, while ensuring that the cover plate 18 is basically flat with the boss 112 after assembly, resulting in a more aesthetically pleasing overall appearance.

[0055] As an example of this utility model, the cover plate 18 is provided with a notch 182 for limiting and abutting against the power cord 27. A limiting member 183 is provided above the notch 182, and the limiting member 183 abuts and limits the upper end surface of the baffle 282. This arrangement enables the cover plate 18 to limit the power cord 27 and / or the fixing member 28 from both the direction of the first inclined surface 111 and the vertical direction, preventing them from coming out.

[0056] Example 2

[0057] like Figure 4-9 As shown, a drawer-type microwave oven includes a housing 10 and a heat-insulating cavity assembly. The heat-insulating cavity assembly includes a cooking cavity 20 and a heat-insulating rack 26. A hot air assembly 50 is provided on the top or side of the cooking cavity 20 for heating and driving the air circulation within the cooking cavity 20. The heat-insulating rack 26 covers the hot air assembly 50 and at least partially covers the cooking cavity 20. A heat-insulating element is provided between the heat-insulating rack 26 and the cooking cavity 20. The drawer-type microwave oven also includes a fan assembly 31. A magnetron 41 is provided at the outlet of the fan assembly 31 for emitting microwaves into the cooking cavity 20.

[0058] This design, by incorporating a heat insulation component, effectively prevents heat transfer from the cooking cavity 20 to the outside, thus providing heat insulation and significantly reducing the heat dissipation difficulty for external electrical components within the cooking cavity 20. A single fan assembly 31 can meet the heat dissipation needs of components such as the magnetron 41. Simultaneously, it concentrates heat within the cooking cavity 20, ensuring a good heating rate and enabling rapid attainment of the required cooking temperature. As an example of this invention, the heat insulation component is heat insulation cotton or a heat insulation board.

[0059] Preferably, the housing 10 is provided with a first air inlet structure 101, and a frequency converter board is disposed between the first air inlet structure 101 and the outlet end of the fan assembly 31. This arrangement allows outdoor air to pass through the frequency converter board and the magnetron 41 in sequence, dissipating heat from them sequentially. The heat dissipation requirements of the frequency converter board and the magnetron 41 are simultaneously met by a single fan assembly 31. Specifically, the frequency converter board is highly sensitive to temperature rise but has a low total heat generation. It is cooled first with fresh cold air to ensure that its chip junction temperature is ≤65℃. As a high-power heat source, the magnetron 41 can still be effectively cooled by the air preheated by the frequency converter board, resulting in a more compact structure. The frequency converter board can be disposed between the inlet end of the fan assembly 31 and the first air inlet structure 101, or it can be disposed within the fan assembly 31.

[0060] As an example of this utility model, 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 disposed on at least one of the rear side plate 14 and / or the bottom plate 15. This arrangement allows the drawer-type microwave oven to have a large air inlet area and low air inlet resistance, thereby further improving heat dissipation efficiency. Preferably, a support foot is provided below the bottom plate 15. This arrangement ensures that there is a gap between the bottom plate 15 and the bottom wall of the embedded space, thereby facilitating the entry of outside air.

[0061] Preferably, the housing 10 further includes a left side panel 12 and a right side panel 13, and the first air intake structure 101 further includes ventilation holes disposed on the left side panel 12 or the right side panel 13. This arrangement allows air to enter from the bottom, rear, and sides of the drawer-type microwave oven simultaneously, avoiding the situation where individual ventilation holes are blocked, thus preventing effective heat dissipation and resulting in more stable heat dissipation.

[0062] As an example of this invention, the rear side plate 14 protrudes to the side away from the cooking cavity 20 to form a protrusion 141. This arrangement ensures that there is a gap between the rear side plate 14 and the rear wall of the embedded space, allowing for smoother air intake. The housing 10 also includes a top plate 11, which forms a second heat dissipation duct between itself and the top of the cooking cavity 20.

[0063] Preferably, the cooking cavity 20 includes a cavity rear plate 21, and the drawer-type microwave oven also includes a partition 16. The two sides of the partition 16 are respectively connected to the cavity rear plate 21 and the rear side plate 14. The partition 16 cooperates with the fan assembly 31 to divide the rear area of ​​the cooking cavity 20 into a first cavity 30 and a second cavity 40. The fan assembly 31 is provided on the upper part of the first cavity 30 to drive outside air through the first air intake structure 101 to enter the first cavity 30 and the second cavity 40 in sequence to form a first heat dissipation air duct.

[0064] This design forces airflow from the first cavity 30 into the second cavity 40 through the partition 16, eliminating turbulence interference from traditional open air ducts and improving the heat dissipation efficiency of the magnetron 41 by 18-22%. At the same time, the isolation design of the first cavity 30 ensures that the operating temperature of the motor of the fan assembly 31 is ≤45℃, significantly extending its service life. In addition, the partition 16 effectively prevents the transmission of vibration of the fan assembly 31 and prevents abnormal noise caused by resonance.

[0065] Preferably, the cooking cavity 20 includes a cavity front panel 22, and the cavity front panel 22 is provided with an air outlet structure 221 on the side near the fan assembly 31. The air outlet airflow of the second cavity 40 and the air outlet structure 221 form a second heat dissipation duct. The drawer-type microwave oven also includes a lighting assembly 60, which is located in the second heat dissipation duct.

[0066] This configuration allows air from the first heat dissipation duct to flow out from the top of the second cavity 40 and pass over the top of the cooking cavity 20, and then be discharged from the air outlet structure 221 of the cavity front panel 22, thereby achieving heat dissipation for structures such as the lighting assembly 60.

[0067] Preferably, the drawer-type microwave oven further includes a baffle plate 19, which is located below the air outlet structure 221 and extends horizontally forward. By setting the baffle plate 19, the gap between the lower part of the drawer-type microwave oven and the embedded space can be covered, improving the aesthetics; at the same time, the baffle plate 19 can prevent the air outlet air from flowing back from the bottom and re-entering the housing 10, ensuring good heat dissipation performance.

[0068] Preferably, the second cavity 40 is provided with a second air inlet structure 102 and an air guide 211. The second air inlet structure 102 is located on the bottom plate 15 and close to the partition plate 16. The air guide 211 is located on the side of the rear plate 21 of the cavity away from the fan assembly 31. A third heat dissipation air duct is formed between the second air inlet structure 102 and the air guide 211. An electronic control board 42 is provided in the third heat dissipation air duct. A fourth heat dissipation air duct is formed between the air guide 211 and the air outlet structure 221.

[0069] This setup uses the fan assembly 31 to horizontally discharge air to the upper part of the second cavity 40, thereby creating a negative pressure zone in the lower part of the second cavity 40. Outside air enters the second cavity 40 under the action of negative pressure through the second air intake structure 102, thereby dissipating heat from the electronic control board 42. Most of the air flows out from the top of the second cavity 40, while some air flows through the air guide 211 to the side of the cooking cavity 20, thereby dissipating heat from components such as the drive motor 70 located on the side of the cooking cavity 20.

[0070] Preferably, the cooking cavity 20 includes a U-shaped frame 23. The U-shaped frame 23 has a first air inlet 231 and a first air outlet 232 at one end near the front panel 22 of the cavity. The first air inlet 231 is connected to the fourth heat dissipation duct. An air guide 25 is provided on the side of the cooking cavity 20, covering the first air outlet 232. The outlet end of the air guide 25 is located near the air outlet structure 221. This arrangement allows some air to be input into the cooking cavity 20 by the air pressure of the fourth heat dissipation duct and discharged through the first air outlet 232 on the other side. This prevents oil droplets and water vapor generated during cooking from accumulating in the cooking cavity 20 and avoids significantly affecting the heating temperature within the cooking cavity 20. A single fan assembly 31 can simultaneously drive the flow of gas within the cooking cavity 20, resulting in low energy consumption.

[0071] Preferably, the hot air assembly 50 includes a circulation assembly 51 and a heating assembly 52 located at the rear and 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, which are used to discharge air at an angle downwards.

[0072] This setup uses the heating elements 52 on both sides to emit hot air downwards at an angle, which can form a counter-vortex in the center of the cooking cavity 20, making the temperature distribution more uniform. At the same time, it can prioritize heating the bottom of the food, and accelerate the core temperature rise through heat conduction through the metal baking pan, which can significantly shorten the running time of functions such as defrosting, resulting in better food cooking effect. In addition, the hot air emanating downwards on both sides can form an air gap at the top of the cooking cavity 20, which can significantly reduce the upward conduction of heat.

[0073] Preferably, the cooking cavity 20 includes a cavity bottom plate 24, a heat insulation frame 26 is disposed below the cavity bottom plate 24, and a heat insulation component is disposed between the heat insulation frame 26 and the cavity bottom plate 24. This arrangement can effectively prevent heat in the cooking cavity 20 from being transferred to the bottom, ensuring that the temperature of the air intake at the bottom of the cooking cavity 20 is low and the heat dissipation effect of the components is good.

[0074] As an example of this utility model, a horizontally placed mounting plate 17 is provided 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 rear plate 21 of the cavity. A waveguide box 90 is provided on the top of the cooking cavity 20. The other side of the mounting plate 17 is fixedly connected to the waveguide box 90. There is a gap between the mounting plate 17 and the fan assembly 31.

[0075] This setup provides a fixed position for the waveguide box 90 and the magnetron 41 using the mounting plate 17, while forming a double-layer heat insulation structure with the fan assembly 31 on the upper part of the first cavity 30 to prevent heat from the top of the cooking cavity 20 from being conducted downwards and to prevent affecting the operational stability of the frequency converter board. Specifically, the mounting plate 17, the right side plate 13, and the rear plate 21 of the cavity form a rigid triangular support structure, ensuring that the flatness error of the waveguide box mounting surface is ≤0.05mm / m², thus ensuring the accuracy of the microwave emission direction.

[0076] The drawer-type microwave oven also includes a door assembly 200 and a housing 100. The housing 100 includes a shell 10 and a cooking cavity 20. Both the shell 10 and the cooking cavity 20 have openings corresponding to the door assembly 200, and the door assembly 200 can be opened to cover the openings. The drawer-type microwave oven also includes a guide rail assembly 80 and a control box 300. Their specific structures and assembly relationships are existing technologies and will not be described in detail here.

[0077] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A drawer-type microwave oven, characterized in that, include: Top plate (11) and rear side plate (14), the top plate (11) includes a first inclined plate (111) that is close to the rear side plate (14) and inclined downward, the first inclined plate (111) being provided with a limiting notch (114); A power cord (27) extends through the limiting notch (114); The cover plate (18) is detachably connected to the first inclined plate (111) and the rear side plate (14) respectively, and is used to cooperate with the limiting notch (114) to limit the assembly of the power line (27).

2. The drawer-type microwave oven according to claim 1, characterized in that, A fixing member (28) is provided on the power cord (27). The fixing member (28) includes a limiting plate (281) and a baffle (282) that are parallel to each other and spaced apart. The baffle (282) is located above the limiting plate (281) and a limiting groove (283) is formed between the two. The limiting groove (283) is inserted into the circumferential sidewall of the limiting notch (114) from at least two directions.

3. The drawer-type microwave oven according to claim 2, characterized in that, The left and right sides of the limiting notch (114) are provided with protrusions (115), and the protrusions (115) are interference-fitted with the limiting groove (283).

4. The drawer-type microwave oven according to claim 2, characterized in that, A protective ring (284) is provided around the power cord (27). The protective ring (284) is located at the end of the limiting plate (281) away from the baffle (282). The protective ring (284) and the limiting plate (281) are integrally formed.

5. The drawer-type microwave oven according to claim 2, characterized in that, The cover plate (18) is provided with a notch (182) for limiting and abutting with the power line (27). A limiting member (183) is provided above the notch (182), and the limiting member (183) abuts and limits the upper end surface of the baffle (282).

6. The drawer-type microwave oven according to claim 1, characterized in that, The first inclined plate (111) is provided with a socket (116), and the cover plate (18) is provided with a plug-in piece (181) at a position corresponding to the socket (116). The plug-in piece (181) is inserted into the socket (116); the cover plate (18) is assembled with the rear side plate (14) by screws on the side away from the socket (116).

7. The drawer-type microwave oven according to claim 6, characterized in that, The first inclined plate (111) has an installation notch (113) at one end near the rear side plate (14), the installation notch (113) is connected to the limiting notch (114), the top of the rear side plate (14) has a folded edge (142), the folded edge (142) protrudes upward at the position corresponding to the installation notch (113) to form an installation protrusion (1421), the installation protrusion (1421) has a mating hole, the cover plate (18) has an assembly hole (184), the mating hole and the assembly hole (184) are assembled by a screw.

8. The drawer-type microwave oven according to claim 7, characterized in that, The first inclined plate (111) is provided with a boss (112), which is located on the outer periphery of the mounting notch (113) and the limiting notch (114).

9. The drawer-type microwave oven according to claim 1, characterized in that, The drawer-type microwave oven also includes a heat-insulating cavity assembly, which includes a cooking cavity (20) and a heat-insulating rack (26). A hot air assembly (50) is provided on the top or side of the cooking cavity (20) for heating and driving the air circulation within the cooking cavity (20). The heat-insulating rack (26) covers the hot air assembly (50) and at least partially covers the cooking cavity (20). A heat insulation element is provided between the heat-insulating rack (26) and the cooking cavity (20).

10. The drawer-type microwave oven according to claim 9, characterized in that, The drawer-type microwave oven also includes a base plate (15), which is provided with a first air intake structure (101) and / or a second air intake structure (102). The cooking cavity (20) includes a cavity front plate (22), which is provided with an air outlet structure (221) on the side near the fan assembly (31). The drawer-type microwave oven also includes a baffle plate (19), which is located below the air outlet structure (221) and extends horizontally forward.

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