A drawer-type microwave oven

Abstract

This utility model provides a drawer-type microwave oven, including a heat-insulated cavity assembly. The heat-insulated cavity assembly includes a cooking cavity, which includes a rear panel. The upper part of the rear panel is inclined forward. The drawer-type microwave oven includes a magnetron and a waveguide box. One end of the waveguide box is connected to the magnetron and is used to input the microwave energy generated by the magnetron from the upper part of the rear panel to heat food. This drawer-type microwave oven reduces the overall height of the product and shortens the size of the waveguide box by mounting the microwave stirring structure and waveguide box on the inclined area of ​​the upper part of the base plate, making the overall structure more compact. Simultaneously, the microwave energy generated by the magnetron is input inclined downwards from the rear side of the cooking cavity, directing the input microwave energy towards the middle of the bottom of the cooking cavity, resulting in better cooking effects for food.

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] Since drawer-type microwave ovens are usually embedded in the kitchen space, the installation space of the slide rails and the user's need for pulling and pulling operations are limited. Usually, the microwaves generated by the magnetron are input from the bottom of the cooking cavity, resulting in a relatively high overall height and the need for a long waveguide box for microwave conduction, which reduces the product's market competitiveness.

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

[0005] The problem solved by this invention is that the existing drawer-type microwave ovens have an unreasonable structure, resulting in large size, especially in height, and insufficient product competitiveness.

[0006] To address the aforementioned problems, this utility model provides a drawer-type microwave oven, including a heat-insulating cavity assembly. The heat-insulating cavity assembly includes a cooking cavity, which includes a rear panel. The upper part of the rear panel is inclined forward. The drawer-type microwave oven includes a magnetron and a waveguide box. One end of the waveguide box is connected to the magnetron and is used to input the microwave oven generated by the magnetron from the upper part of the rear panel to heat food.

[0007] This design allows the microwave stirring structure and waveguide box to be mounted on the inclined area at the top of the base plate, reducing the overall height of the product. At the same time, the microwaves generated by the magnetron are input from the rear side of the cooking cavity at an angle downwards, so that the input microwaves are directed towards the middle position of the bottom of the cooking cavity, resulting in better cooking effect on the food. It also shortens the size of the waveguide box, making the overall structure more compact.

[0008] Preferably, the drawer-type microwave oven further includes a circulating hot air assembly connected to the cooking cavity. The circulating hot air assembly is located at the top of the cooking cavity and is used to heat the gas drawn in from the top, and then circulate it into the cooking cavity from the left and right sides.

[0009] The design allows the drawer-type microwave oven to use microwaves to quickly penetrate the food and generate heat through friction with water molecules, shortening defrosting or heating time. Meanwhile, the heating element heats the food surface through radiation and convection, forming a crispy layer, which can meet users' multiple requirements for cooking speed, taste, and health.

[0010] Preferably, the heat-insulating cavity assembly further includes a heat-insulating frame assembly, which covers the outer surface of the cooking cavity, and a heat-insulating element is disposed between the cooking cavity and the heat-insulating frame assembly. This arrangement can effectively prevent heat from the cooking cavity from being transferred to the outside, thereby playing a role in heat insulation and heat resistance, reducing the heat dissipation load of related components; in addition, it can concentrate heat in the cooking cavity to give it a good heating rate, which helps to improve cooking efficiency and cooking effect, and also reduces energy consumption.

[0011] Preferably, the drawer-type microwave oven further includes a housing, inside which a vertically placed partition is provided, the cooking cavity is located in front of the partition, and a fan assembly and a magnetron are provided on the side of the partition away from the cooking cavity. The magnetron is positioned opposite the outlet end of the fan assembly, and one end of the waveguide box passes through the partition and is connected to the magnetron.

[0012] This setup physically isolates the magnetron from the cooking cavity, preventing heat radiation from the cavity from affecting the magnetron's operational stability. The fan assembly's outlet faces the magnetron to create directional forced air cooling, improving heat dissipation efficiency by 35% compared to traditional side-flow airflow. The waveguide box passes vertically through the partition and uses a short, straight waveguide design to effectively reduce its length, further reducing microwave transmission loss and the risk of electromagnetic leakage. In addition, the partition, as a load-bearing structure, can pre-integrate the fan mounting section and waveguide positioning holes, significantly improving assembly line efficiency.

[0013] Preferably, the housing includes a top plate, a left side plate, a right side plate, a rear side plate, and a bottom plate. The partition is connected to the top plate, the left side plate, the right side plate, and the bottom plate respectively. The partition is arranged parallel to the rear side plate. At least one of the left side plate, the rear side plate, and the bottom plate is provided with an air inlet structure. The air inlet structure is located on the side of the partition away from the cooking cavity. A frequency converter plate is provided between the air inlet structure and the outlet end of the fan assembly.

[0014] This configuration allows outdoor air to pass through the inverter board and magnetron in sequence, dissipating heat from them sequentially. A single fan assembly simultaneously meets the heat dissipation needs of the inverter board and magnetron. It further increases the air intake area and reduces air intake resistance, thereby improving heat dissipation efficiency.

[0015] Preferably, a support foot is provided below the base plate, and the rear side plate protrudes to the side away from the cooking cavity to form a protrusion. This arrangement ensures that there is a gap between the base plate and the bottom wall of the embedded space, and a gap between the rear side plate and the rear wall of the embedded space, facilitating the entry of outside air into the housing through the air intake structure.

[0016] Preferably, the partition is provided with an air guide hood and an air guide port. The inlet end of the air guide hood is positioned directly opposite the magnetron and is used to discharge the airflow from the fan assembly through the air guide port. The drawer-type microwave oven also includes an electronic control board, which is fixed to the side of the partition away from the cooking cavity and located above the air guide hood.

[0017] This design effectively prevents the flow direction of hot air after heat dissipation from being constrained, thus ensuring that the fan assembly always draws in cool air for the heat dissipation of electrical components. At the same time, when the fan assembly delivers outside air, it can draw in and disturb the air around the control board, so that the heat dissipation of components such as the control board, magnetron, and frequency converter can be achieved through a single fan assembly.

[0018] Preferably, the cooking cavity further includes a cavity front panel, the cavity front panel having an air outlet on the side near the fan assembly, the air guide port being located on the side of the partition away from the fan assembly, and a heat dissipation channel being formed between the air guide port and the air outlet.

[0019] This design can constrain the flow direction of the heat dissipation airflow, making its flow path around the cooking cavity longer and the heat dissipation effect better; at the same time, it can also dissipate heat from structures such as the drive motor and lighting components, making the structure more reasonable.

[0020] Preferably, the cooking cavity further includes a U-shaped frame, wherein an air inlet and a connecting hole are provided at one end of the U-shaped frame near the front plate of the cavity, the air inlet and the connecting hole are located on the left and right sides of the cooking cavity, and the connecting hole is located on the side of the air inlet away from the air guide.

[0021] This setup allows some air to enter the cooking chamber through the air inlet based on the air pressure difference and exit through the connecting hole on the other side. This prevents oil droplets and water vapor generated during cooking from accumulating in the cooking chamber and also avoids significant interference with the circulating heating airflow inside the cooking chamber. A single fan assembly can simultaneously drive the gas flow inside and outside the cooking chamber, resulting in low energy consumption.

[0022] Preferably, the drawer-type microwave oven further includes a door assembly and a cabinet. The cabinet includes a shell and a cooking cavity. Both the shell and the cooking cavity are provided with openings corresponding to the door assembly, and the door assembly can be opened to cover the openings.

[0023] Compared with the prior art, the drawer-type microwave oven described in this utility model embodiment has the following beneficial effects: 1) The microwave stirring structure and waveguide box are installed in the inclined area on the upper part of the base plate, reducing the overall height of the product and shortening the size of the waveguide box to make the overall structure more compact; 2) At the same time, the microwaves generated by the magnetron are input from the rear side of the cooking cavity at an angle downwards, so that the input microwaves are directed towards the middle position of the bottom of the cooking cavity, resulting in better cooking effect on food; 3) By combining the rapid penetration of microwaves with the heating tube through radiation and convection heating, multiple modes such as defrosting, baking, and grilling of food can be achieved, meeting users' multiple requirements for cooking speed, taste, and health; 4) The heat insulation rack assembly can effectively prevent the heat in the cooking cavity from being transferred to the outside, thus playing a role in heat insulation and heat resistance, reducing the heat dissipation load of related components; at the same time, it concentrates heat in the cooking cavity, giving it a good heating rate, which helps to improve cooking efficiency and cooking effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the drawer-type microwave oven described in this embodiment of the present invention in the open state;

[0025] Figure 2 This is a schematic diagram of the overall structure of the drawer-type microwave oven described in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the drawer-type microwave oven of this utility model with the rear side panel hidden;

[0027] Figure 4 This is an exploded view of the internal structure of the drawer-type microwave oven described in this embodiment of the invention.

[0028] Figure 5 This is a schematic diagram of the internal structure of the drawer-type microwave oven described in an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100-Box body; 101-Air inlet structure; 10-Shell; 11-Top plate; 12-Left side plate; 13-Right side plate; 14-Rear side plate; 141-Protrusion; 15-Bottom plate; 16-Baffle; 161-Air vent; 20-Cooking cavity; 21-Rear plate of cavity; 22-Front plate of cavity; 221-Air outlet; 23-U-shaped frame; 231-Air inlet; 30-Fan assembly; 40-Magnetron; 50-Circulating hot air assembly; 60-Electrical control board; 70-Drive motor; 80-Air guide cover; 90-Waveguide box; 200-Door assembly; 300-Control box. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Without conflict, the technical features of the embodiments of this utility model can be combined with each other.

[0032] 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 connections 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.

[0033] 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.

[0034] 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.

[0035] like Figure 1-5 As shown, a drawer-type microwave oven includes a heat-insulated cavity assembly, which includes a cooking cavity 20. The cooking cavity 20 includes a cavity rear plate 21, the upper part of which is inclined forward. The drawer-type microwave oven includes a magnetron 40 and a waveguide box 90. One end of the waveguide box 90 is connected to the magnetron 40 and is used to input the microwave oven generated by the magnetron 40 from the upper part of the cavity rear plate 21 to heat food.

[0036] This configuration allows the microwaves generated by the magnetron 40 to be input at an angle downwards from the rear side of the cooking cavity 20, so that the input microwaves are directed towards the middle position of the bottom of the cooking cavity 20, resulting in better cooking effect on the food; at the same time, it can shorten the size of the waveguide box 90, making the overall structure more compact.

[0037] Preferably, the drawer-type microwave oven further includes a circulating hot air assembly 50 connected to the cooking cavity 20. The circulating hot air assembly 50 is located at the top of the cooking cavity 20 and is used to heat the gas drawn in from the top, circulating the heated gas from both sides into the cooking cavity 20. This configuration allows the drawer-type microwave oven to utilize microwaves to quickly penetrate the interior of food and generate heat through friction with water molecules, shortening defrosting or heating time. Meanwhile, the heating element heats the food surface through radiation and convection, forming a crispy layer, thus meeting users' multiple requirements for cooking speed, taste, and health.

[0038] Preferably, the heat-insulating cavity assembly further includes a heat-insulating frame assembly, which covers the outer surface of the cooking cavity 20, and a heat-insulating element is disposed between the cooking cavity 20 and the heat-insulating frame assembly. This arrangement can effectively prevent heat from the cooking cavity 20 from being transferred to the outside, thereby playing a role in heat insulation and heat resistance, reducing the heat dissipation load of related components; in addition, it can concentrate heat in the cooking cavity 20, giving it a good heating rate, which helps to improve cooking efficiency and cooking effect, and also reduces energy consumption.

[0039] As an example of this utility model, the heat insulation frame assembly includes a top frame, a left side frame, a bottom frame, a right side frame, and a rear frame. The top frame, left side frame, bottom frame, and right side frame are connected end to end to enclose a receiving space. The inner cavity assembly is disposed within the receiving space and is assembled in a conventional manner, which will not be described in detail here. As for the material of the heat insulation component, it can be conventional heat insulation cotton or other conventional heat insulation materials, and this application does not impose specific limitations on it.

[0040] Preferably, the drawer-type microwave oven further includes a housing 10, inside which a vertically placed partition 16 is provided. The cooking cavity 20 is located in front of the partition 16. On the side of the partition 16 away from the cooking cavity 20, a fan assembly 30 and a magnetron 40 are provided. The magnetron 40 is positioned opposite the outlet end of the fan assembly 30. One end of the waveguide box 90 passes through the partition 16 and is connected to the magnetron 40.

[0041] This configuration physically isolates the magnetron 40 from the cooking cavity 20, preventing heat radiation from the cavity from affecting the operational stability of the magnetron 40. The outlet end of the fan assembly 30 faces the magnetron 40 to form directional forced air cooling, improving heat dissipation efficiency by 35% compared to traditional lateral air supply. The waveguide box 90 passes vertically through the partition 16 and adopts a short straight waveguide design, which effectively reduces its length, further reducing microwave transmission loss and electromagnetic leakage risk. In addition, the partition 16, as a load-bearing structure, can pre-integrate the fan mounting part and waveguide positioning holes, improving production line assembly efficiency by 40%. As an example of this utility model, the fan assembly 30 includes a connected bottom shell, a top cover, and a fan, and its specific structure and assembly relationship are existing technologies.

[0042] Preferably, there is a gap between the partition 16 and the cooking cavity 20. This arrangement can form an air gap between the cooking cavity 20 and the electrical cavity, preventing the heat from the cooking cavity 20 from being directly conducted to the electrical cavity through physical contact; at the same time, the gap between the two provides installation space for the assembly of the waveguide box 90.

[0043] Preferably, the housing 10 includes a top plate 11, a left side plate 12, a right side plate 13, a rear side plate 14, and a bottom plate 15. The partition 16 is connected to the top plate 11, the left side plate 12, the right side plate 13, and the bottom plate 15 respectively. The partition 16 is arranged parallel to the rear side plate 14. At least one of the left side plate 12, the rear side plate 14, and the bottom plate 15 is provided with an air inlet structure 101. The air inlet structure 101 is located on the side of the partition 16 away from the cooking cavity 20. A frequency converter plate is provided between the air inlet structure 101 and the outlet end of the fan assembly 30.

[0044] This configuration allows outdoor air to pass through the inverter board and magnetron 40 first and then dissipate heat from them sequentially. A single fan assembly 30 simultaneously meets the heat dissipation needs of the inverter board and magnetron 40. This further increases the air intake area and reduces the air intake resistance, thereby improving heat dissipation efficiency.

[0045] Specifically, the inverter board is highly sensitive to temperature rise but has low total heat generation. Cooling it with fresh, cold air first ensures its chip junction temperature is ≤65℃. Meanwhile, the magnetron 40, as a high-power heat source, can still be effectively cooled by the air preheated by the inverter board, resulting in a more compact structure. The inverter board can be located on the ventilation path between the inlet end of the fan assembly 30 and the first air inlet structure 101, for example, on the partition 16 or the housing 10, or it can be located inside the fan assembly 30.

[0046] As an example of this utility model, a support leg is provided below the base plate 15, and a portion of 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 base plate 15 and the bottom wall of the embedded space, and a gap between the rear side plate 14 and the rear wall of the embedded space, facilitating the entry of outside air into the housing 10 through the air intake structure 101.

[0047] Preferably, the partition 16 is provided with an air guide hood 80 and an air guide port 161. The inlet end of the air guide hood 80 is positioned opposite the magnetron 40 and is used to discharge the airflow from the fan assembly 30 through the air guide port 161. The drawer-type microwave oven also includes an electronic control board 60, which is fixed to the side of the partition 16 away from the cooking cavity 20 and located above the air guide hood 80.

[0048] This setting effectively prevents the flow direction of hot air after heat dissipation from being constrained, thereby ensuring that the fan assembly 30 always draws in cold air for the heat dissipation of electrical components; at the same time, when the fan assembly 30 delivers outside air, it can draw in and disturb the air around the electronic control board 60, so that the heat dissipation of components such as the electronic control board 60, magnetron 40, and frequency converter board can be achieved through a single fan assembly 30.

[0049] Preferably, the cooking cavity 20 further includes a cavity front plate 22, the cavity front plate 22 is provided with an air outlet 221 on the side near the fan assembly 30, the air guide 161 is located on the side of the partition 16 away from the fan assembly 30, and a heat dissipation channel is formed between the air guide 161 and the air outlet 221.

[0050] This design can constrain the flow direction of the heat dissipation airflow, making its flow path around the cooking cavity 20 longer and the heat dissipation effect better; at the same time, it can also dissipate heat from structures such as the drive motor 70 and lighting components, making the structure more reasonable.

[0051] Preferably, the cooking cavity 20 further includes a U-shaped frame 23, wherein an air inlet 231 and a connecting hole are provided at one end of the U-shaped frame 23 near the front plate 22 of the cavity. The air inlet 231 and the connecting hole are located on the left and right sides of the cooking cavity 20, and the connecting hole is located on the side of the air inlet 231 away from the air guide 161.

[0052] This setup allows some air to enter the cooking chamber 20 through the air inlet 231 based on the air pressure difference, and then exit through the connecting hole on the other side. This prevents oil droplets, water vapor, and other substances generated during cooking from accumulating in the cooking chamber 20, and also avoids significant interference with the circulating heating airflow in the cooking chamber 20. A single fan assembly 30 can simultaneously drive the gas flow inside and outside the cooking chamber 20, resulting in low energy consumption.

[0053] 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 control box 300 and connected guide rail assemblies and a drive motor 70. Their specific structures and assembly relationships are existing technologies and will not be described in detail here.

[0054] 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, The microwave oven includes a heat-insulated cavity assembly, which includes a cooking cavity (20). The cooking cavity (20) includes a cavity rear plate (21), the upper part of which is inclined forward. The drawer-type microwave oven includes a magnetron (40) and a waveguide box (90). One end of the waveguide box (90) is connected to the magnetron (40) for inputting the microwave oven generated by the magnetron (40) from the upper part of the cavity rear plate (21) to heat food. It also includes a housing (10), in which a vertically placed partition (16) is provided. The cooking cavity (20) is located in front of the partition (16). On the side of the partition (16) away from the cooking cavity (20), a fan assembly (30) and the magnetron (40) are provided. The magnetron (40) is positioned opposite the outlet end of the fan assembly (30). One end of the waveguide box (90) passes through the partition (16) and is connected to the magnetron (40).

2. The drawer-type microwave oven as claimed in claim 1, wherein The drawer-type microwave oven also includes a circulating hot air assembly (50) connected to the cooking cavity (20). The circulating hot air assembly (50) is located at the top of the cooking cavity (20) and is used to heat the gas drawn in from the top and then circulate it into the cooking cavity (20) from the left and right sides.

3. The drawer-type microwave oven according to claim 1, characterized in that, The heat insulation cavity assembly also includes a heat insulation frame assembly, which covers the outer surface of the cooking cavity (20), and a heat insulation element is provided between the cooking cavity (20) and the heat insulation frame assembly.

4. The drawer-type microwave oven according to claim 1, characterized in that, The housing (10) includes a top plate (11), a left side plate (12), a right side plate (13), a rear side plate (14), and a bottom plate (15). The partition (16) is connected to the top plate (11), the left side plate (12), the right side plate (13), and the bottom plate (15) respectively. The partition (16) is arranged parallel to the rear side plate (14). At least one of the left side plate (12), the rear side plate (14), and the bottom plate (15) is provided with an air inlet structure (101). The air inlet structure (101) is located on the side of the partition (16) away from the cooking cavity (20). A frequency converter plate is provided between the air inlet structure (101) and the outlet end of the fan assembly (30).

5. The drawer-type microwave oven according to claim 4, characterized in that, The bottom plate (15) is provided with support feet, and the rear side plate (14) protrudes to the side away from the cooking cavity (20) to form a protrusion (141).

6. The drawer-type microwave oven according to claim 1, characterized in that, A guide hood (80) is provided on the partition (16), and an air vent (161) is provided on the partition (16). The inlet end of the guide hood (80) is positioned directly opposite the magnetron (40) and is used to discharge the airflow from the fan assembly (30) through the air vent (161). The drawer-type microwave oven also includes an electronic control board (60), which is fixed on the side of the partition (16) away from the cooking cavity (20) and located above the guide hood (80).

7. The drawer-type microwave oven according to claim 6, characterized in that, The cooking cavity (20) also includes a cavity front plate (22), on which an air outlet (221) is provided on the side near the fan assembly (30), and an air guide (161) is located on the side of the partition (16) away from the fan assembly (30), forming a heat dissipation channel between the air guide (161) and the air outlet (221).

8. The drawer-type microwave oven according to claim 7, characterized in that, The cooking cavity (20) also includes a U-shaped frame (23), which has an air inlet (231) and a connecting hole at one end near the front panel (22) of the cavity. The air inlet (231) and the connecting hole are located on the left and right sides of the cooking cavity (20), and the connecting hole is located on the side of the air inlet (231) away from the air guide (161).

9. The drawer-type microwave oven according to claim 1, characterized in that, The drawer-type microwave oven also includes a door assembly (200) and a cabinet (100). The cabinet (100) includes a shell (10) and a cooking cavity (20). Both the shell (10) and the cooking cavity (20) are provided with openings corresponding to the door assembly (200). The door assembly (200) can be opened to cover the openings.

Images