Vehicle-mounted microwave oven

Abstract

The utility model provides a vehicle-mounted microwave oven which comprises a shell, a heating cavity, a door assembly and an electrical cavity, and the shell comprises a side plate; the heating cavity is located in the shell and used for containing food to be heated. The door assembly is located on the front side of the shell and used for sealing or opening the heating cavity; the electric cavity is located on one side of the heating cavity and comprises a magnetron assembly and a frequency conversion plate assembly, the frequency conversion plate assembly is arranged on the outer side of the magnetron assembly, the frequency conversion plate assembly and the magnetron assembly are separated through a side plate, a first fan is arranged on the rear side of the magnetron assembly, and a second fan is arranged on the rear side of the frequency conversion plate assembly; and the first fan and the second fan are used for cooling the magnetron assembly and the frequency conversion plate assembly respectively. The magnetron assembly and the frequency conversion plate assembly are arranged in a separated mode, so that electrical components are reasonably arranged, EMC interference between the magnetron assembly and the frequency conversion plate assembly is avoided, the fans are arranged at the corresponding positions of the magnetron assembly and the frequency conversion plate assembly, a good heat dissipation effect is achieved on the magnetron assembly and the frequency conversion plate assembly, mutual influence of heat dissipation air channels is avoided, and the service life of the magnetron assembly and the frequency conversion plate assembly is prolonged. And normal, stable and efficient work of the microwave oven is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted equipment, and more specifically, to a vehicle-mounted microwave oven. Background Art

[0002] With the advancement of infrastructure projects, heavy trucks, as an important tool in the transportation industry, have seen a continuous and steady increase in their numbers; along with the continuous boom in the tourism market, the number of RVs has increased explosively. As a common household appliance, a microwave oven can heat food using microwaves, and there will be no open flames or gas during the whole process, which is safe and reliable and can significantly improve the quality of life of drivers, so it is favored.

[0003] In existing RVs or trucks, a front cabinet is provided at the top of the cockpit, and the microwave oven is installed inside the front cabinet. Due to the limited space of the front cabinet, to a certain extent, it affects the volume of the microwave oven, the layout of internal components, and the normal heat dissipation of electrical components. Therefore, how to make the layout of internal components of the microwave oven reasonable, not affect the normal heat dissipation of electrical components, and ensure the normal and efficient operation of the microwave oven is crucial for the structural design of the vehicle-mounted microwave oven. Summary of the Utility Model

[0004] The utility model aims to propose a vehicle-mounted microwave oven to solve the problems in the prior art that the layout of internal components of the vehicle-mounted microwave oven is unreasonable, affecting heat dissipation and the normal use of the microwave oven.

[0005] To solve the above problems, the utility model provides a vehicle-mounted microwave oven, including: a housing including side plates; a heating cavity located inside the housing for holding food to be heated; a door assembly located at the front side of the housing for sealing or opening the heating cavity; an electrical cavity located on one side of the heating cavity, the electrical cavity including a magnetron assembly and a variable-frequency board assembly. The variable-frequency board assembly is arranged outside the magnetron assembly, and the variable-frequency board assembly and the magnetron assembly are separated by the side plate. A first fan is arranged at the rear side of the magnetron assembly, and a second fan is arranged at the rear side of the variable-frequency board assembly. The first fan and the second fan respectively dissipate heat from the magnetron assembly and the variable-frequency board assembly.

[0006] Further, the variable-frequency board assembly is arranged outside the magnetron assembly, and the two are distributed horizontally or horizontally offset.

[0007] Further, the variable-frequency board assembly includes a housing and a variable-frequency board. The variable-frequency board is installed inside the housing, and the housing is fixed to the outer side surface of the side plate of the housing. The side plate separates the variable-frequency board assembly from the magnetron assembly. A second fan is arranged at the rear side of the housing, and the second fan is used to dissipate heat from the variable-frequency board assembly inside the housing.

[0008] Further, the position of the housing near the rear side is provided with a flared structure.

[0009] Further, the position of the housing near the front part is provided with a breathable structure, air circulates between the front and rear sides of the housing, and the second fan guides the incoming air to pass through the variable frequency board assembly and then discharge through the breathable structure.

[0010] Further, the housing includes a top plate, a first side plate, a second side plate and a bottom plate. The first side plate and the second side plate are respectively located on both sides of the top plate and the bottom plate. The magnetron assembly is arranged inside the second side plate, and the variable frequency board assembly is arranged outside the second side plate.

[0011] Further, a waveguide box is arranged at the top of the heating cavity. One end of the waveguide box extends into the electrical cavity, and the top of the magnetron assembly is connected to the waveguide box.

[0012] Further, the side surface of the magnetron assembly is connected to the second side plate and / or the side surface of the heating cavity. A first fan is arranged on the rear plate of the heating cavity corresponding to the position of the magnetron assembly.

[0013] Further, a filter plate is arranged at the top of the heating cavity, and the filter plate is located on the side of the heating cavity away from the electrical cavity.

[0014] Further, the heating cavity is arranged above the bottom plate. A first convex part is formed by partial convexity on one side of the bottom plate away from the heating cavity. The first convex part protrudes downward, and the first convex part is used to avoid interference with the driving structure that drives the rotation inside the microwave oven.

[0015] Compared with the prior art, the in-vehicle microwave oven of the present utility model has the following beneficial effects: The magnetron assembly and the variable frequency board assembly are arranged separately, so that the layout of electrical components is reasonable, avoiding EMC interference between the magnetron assembly and the variable frequency board assembly. And fans are arranged at the corresponding positions of the magnetron assembly and the variable frequency board assembly, which play a good role in heat dissipation for both of them, and avoid the mutual influence of the heat dissipation air ducts, ensuring the normal, stable and efficient operation of the microwave oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall schematic diagram of the in-vehicle microwave oven system according to the embodiment of the present utility model;

[0017] Figure 2 It is the exploded view of the in-vehicle microwave oven system according to the embodiment of the present utility model;

[0018] Figure 3 It is the exploded view of the in-vehicle microwave oven system from another perspective according to the embodiment of the present utility model;

[0019] Figure 4 Schematic diagram of the microwave oven (door assembly omitted) according to an embodiment of the present utility model;

[0020] Figure 5 Another perspective schematic diagram of the microwave oven (door assembly omitted) according to an embodiment of the present utility model;

[0021] Figure 6 Third perspective schematic diagram of the microwave oven (door assembly omitted) according to an embodiment of the present utility model;

[0022] Figure 6a is Figure 6 Partial enlarged view of part A in

[0023] Figure 7 Explosion schematic diagram of the microwave oven (door assembly omitted) according to the present utility model after opening the first side plate;

[0024] Figure 7a is Figure 7 Partial enlarged view of part A in

[0025] Figure 7b is Figure 7 Partial enlarged view of part B in

[0026] Figure 8 Explosion schematic diagram of the microwave oven (door assembly omitted) according to the present utility model after opening the top plate;

[0027] Figure 9 Schematic diagram of the structure of the bottom bracket according to an embodiment of the present utility model;

[0028] Figure 10 Schematic diagram of the first bracket according to an embodiment of the present utility model.

[0029] Explanation of reference numerals:

[0030] 100 - Microwave oven; 1 - Outer shell; 11 - Top plate; 111 - First flat plate; 112 - Avoidance part; 1121 - First vertical plate; 1122 - Second flat plate; 1123 - First inclined plate; 1124 - Second inclined plate; 12 - First side plate; 13 - Second side plate; 14 - Bottom plate; 141 - Furnace foot; 142 - First convex part; 143 - Bending part; 144 - Avoidance groove; 2 - Door assembly; 3 - Filter assembly; 41 - First bracket; 411 - Stop bar; 412 - First connection position; 413 - Second connection position; 414 - First notch; 42 - Second bracket; 43 - Bottom bracket; 431 - Guide groove; 432 - Second notch; 433 - Limiting part; 434 - Concave part; 435 - Hem; 44 - Front bracket; 441 - Connecting ear; 442 - Connecting plate; 443 - Support plate; 5 - Front cover plate; 51 - First air outlet; 52 - Second air outlet; 53 - Upward flanging; 6 - Heating cavity; 61 - Cavity rear plate; 62 - Top cover plate; 71 - First fan; 72 - Second fan; 8 - Electrical cavity; 81 - Magnetron assembly; 82 - Inverter board assembly; 83 - Waveguide box; 86 - Filter board; 87 - Filter bracket; 88 - Air guide cover; 200 - Front cabinet, 201 - Top cover; 202 - Bottom platform; 203 - Left side plate; 204 - Right side plate; 2011 - Connecting part; 2011a - Vertical plate; 2011b - Horizontal plate Detailed implementation manners

[0031] To make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. In addition, a brief description of the directions involved in the following specific implementation manners: The directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "top end", "bottom end", etc. mentioned in the embodiments refer to the directions or positional relationships shown in the accompanying drawings. The term "on..." means directly or indirectly supported by... elements

[0032] It should be noted that in the description of the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "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, an electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the present utility model can be understood according to specific situations

[0033] As Figures 1-10As shown in the figure, a vehicle-mounted microwave oven system includes a microwave oven 100 and a front cabinet 200. The microwave oven 100 is installed inside the front cabinet 200. An upper bracket is provided on the top of the microwave oven 100, and a connecting part 2011 is provided on the top inside the front cabinet 200. The top of the microwave oven 100 is connected to the front cabinet 200 through the upper bracket and the connecting part 2011. A bottom bracket 43 is provided at the bottom of the microwave oven 100, and the bottom bracket 43 is connected to the bottom of the front cabinet 200. Thus, both the upper and lower parts of the microwave oven are fixed, the microwave oven is balanced and fixed, ensuring a firm connection between the microwave oven and the front cabinet and preventing the microwave oven from loosening.

[0034] Furthermore, to further increase the connection stability between the microwave oven and the front cabinet, two upper brackets are provided and are respectively located at positions near both sides of the top of the microwave oven 100, and the upper brackets are close to the front side of the microwave oven; the bottom bracket 43 is provided at the bottom of the microwave oven 100 and near the rear side, and a front bracket 44 is also provided at the position near the front side of the bottom of the microwave oven 100. Thus, when viewed from the side of the microwave oven, the connection lines of the upper bracket, the front bracket, and the bottom bracket form a triangular structure, increasing the fixing stability of the microwave oven. Preferably, the front bracket 44 is also provided in two, and is respectively located at positions near the left and right sides of the microwave oven.

[0035] The microwave oven includes a housing 1, a door assembly 2, a heating cavity 6, and an electrical cavity 8. The heating cavity 6 is located inside the housing 1 and is used to hold the food to be heated; the door assembly 2 is located at the front side of the housing 1 and is used to seal or open the heating cavity 6. The door assembly 2 is hinged to the housing 1, and the electrical cavity 8 is located on one side of the heating cavity 6 and is at least used to provide microwaves to the heating cavity.

[0036] Among them, the housing 1 includes a top plate 11, a first side plate 12, a second side plate 13, and a bottom plate 14. The first side plate 12 and the second side plate 13 are respectively located on both sides of the top plate 11 and the bottom plate 14. The top plate 11 includes a first flat plate 111, and an avoidance part 112 is provided at the rear side of the first flat plate 111. The avoidance part 112 is generally arc-shaped or stepped. This setting enables the vehicle-mounted microwave oven to adapt to the shape of the front cabinet, and the space utilization rate inside the front cabinet is high. Preferably, the avoidance part 112 includes a connected first vertical plate 1121 and a second flat plate 1122. The second flat plate 1122 is arranged lower than the first flat plate 111. A first inclined plate 1123 that slopes downward is provided at one end of the second flat plate 1122 away from the first vertical plate 1121. A second inclined plate 1124 is provided at one end of the first inclined plate 1123 close to the fan assembly. The inclination angles of the first inclined plate 1123 and the second inclined plate 1124 are α1 and α2 respectively, where 0 < α1 < α2 < 90°. This setting enables the power cord to pass through and be first assembled with the filter board 86 for connection, facilitating the disassembly, assembly, and maintenance of the vehicle-mounted microwave oven.

[0037] The housing 1 further includes a front cover plate 5, which is located at the front of the top plate 11, the first side plate 12, the second side plate 13 and the bottom plate 14. The door assembly 2 is connected to the front cover plate 5. The upper edge of the front cover plate 5 extends beyond the plane where the top plate 11 is located, the side edges of the front cover plate 5 extend beyond the planes where the first side plate 12 and the second side plate 13 are located, and the lower edge of the front cover plate 5 extends beyond the plane where the bottom plate 14 is located.

[0038] The housing 1 further includes a bottom plate 14. The heating cavity 6 is arranged above the bottom plate 14. A first convex portion 142 is formed by partial convexity on one side of the bottom plate 14 away from the heating cavity 6. The first convex portion 142 bulges downward and is used to avoid the driving structure that drives the rotation inside the microwave oven. The furnace feet 141 are also arranged on the bottom plate 14 and are used for detachable connection with the bottom bracket 43. This setting can not only increase the mechanical strength of the bottom plate 14, but also make the furnace feet 141 have a certain height to ensure firm connection with the bottom plate 14, while the height of the furnace feet 141 protruding from the bottom plate 14 is very limited, and the space utilization rate is high.

[0039] An avoidance groove 144 is also arranged on the front side of the bottom plate 14. The avoidance groove 144 is located between the front part of the first convex portion 142 of the bottom plate and the front side edge of the bottom plate 14. A front bracket 44 is arranged in the avoidance groove 144. The front bracket 44 bulges downward and extends, so that the lower part of the front bracket 44 is nearly flush with the lower edge of the front cover plate 5, so as to ensure that the bottom of the microwave oven is basically flat after being fixed inside the head cabinet, and avoid the situation of the microwave oven tilting in the horizontal direction. The front side edge of the bottom plate 14 is turned down to form a bent portion 143, and the bent portion 143 and the front part of the first convex portion 142 define the avoidance groove 144.

[0040] A waveguide box 83 is arranged at the top of the heating cavity 6. One end of the waveguide box 83 extends into the electrical cavity 8. A magnetron assembly 81 is arranged in the electrical cavity 8. The magnetron assembly 81 is arranged outside the heating cavity 6 and on the right side of the heating cavity 6. The top of the magnetron assembly 81 is connected to the waveguide box 83. The side of the magnetron assembly 81 is connected to the second side plate 13 and / or the side of the heating cavity 6. The first fan 71 is arranged at the position corresponding to the magnetron assembly 81 on the rear plate of the heating cavity 6. The magnetron assembly 81 includes a magnetron and a magnetron bracket, and the magnetron is connected to the housing 1 through the magnetron bracket.

[0041] Specifically, a magnetron bracket is arranged on the side of the magnetron close to the second side plate 13, and the magnetron bracket is fixedly connected to the second side plate 13. This setting has a simple structure, can further improve the assembly stability and reliability of the magnetron, and meet the service life in the vehicle-mounted environment.

[0042] As one of the embodiments of the present utility model, the frequency conversion board assembly 82 can also be arranged below the magnetron assembly 81, that is, the magnetron assembly 81 and the frequency conversion board assembly 82 are arranged vertically; the frequency conversion board assembly 82 can also be arranged outside the magnetron assembly 81, that is, the two are arranged horizontally or horizontally offset, and a partition can be selectively arranged between the magnetron assembly 81 and the frequency conversion board assembly 82, so that the frequency conversion board assembly 82 can be fixed on the bottom plate 14 or the second side plate 13. Preferably, the magnetron assembly 81 is arranged inside the second side plate 13, and the frequency conversion board assembly 82 is arranged outside the second side plate 13. Separating the magnetron assembly from the frequency conversion board assembly makes the layout of electrical components reasonable, avoids EMC interference between the magnetron assembly and the frequency conversion board assembly, and ensures the normal, stable and efficient operation of the microwave oven.

[0043] Correspondingly, a fan assembly is arranged on the cavity rear plate 61 at the rear side of the electrical cavity 8. The fan assembly includes a first fan 71 and a second fan 72. The first fan 71 is correspondingly arranged at the rear side of the magnetron assembly 81, and the second fan 72 is correspondingly arranged at the rear side of the frequency conversion board assembly 82, and is used to drive the air flow to dissipate heat from the magnetron assembly and the frequency conversion board assembly respectively.

[0044] As a preferred embodiment of the present utility model, the frequency conversion board assembly 82 is arranged outside the outer shell 1 of the microwave oven 100. The frequency conversion board assembly 82 is separated from the magnetron assembly 81 by the second side plate 13. The frequency conversion board assembly 82 is fixedly connected to the second side plate 13, that is, the magnetron assembly 81 is arranged inside the second side plate 13, and the frequency conversion board assembly 82 is arranged outside the second side plate 13. Preferably, the frequency conversion board assembly 82 includes a housing and a frequency conversion board. The frequency conversion board is installed inside the housing, and the housing is fixed on the outer side surface of the second side plate 13. Correspondingly, a second fan 72 is arranged at the rear side of the housing, and the second fan 72 is used to dissipate heat from the frequency conversion board assembly 82 inside the housing. More preferably, the position of the housing near the rear side is set as a flared structure with an opening gradually increasing from front to back, which is convenient for adapting to the shape of the second fan, and at the same time increases the air intake area and improves the heat dissipation effect. Further, the position of the housing near the front part is set as a breathable structure, and the air flows through the front and rear sides of the housing, so that the air intake guided by the second fan 72 passes through the frequency conversion board assembly 82 and is discharged through the breathable structure after dissipating heat from the frequency conversion board assembly. Preferably, the breathable structure is set as a breathable net, which can avoid large particle pollutants in the compartment from entering the housing of the frequency conversion board assembly while dissipating heat, and plays a protective role for the frequency conversion board assembly.

[0045] The magnetron assembly 81 is fixedly connected to the waveguide box 83, and a filter plate 86 is arranged at the top of the heating cavity 6. The filter plate 86 is located on the side of the heating cavity 6 away from the electrical cavity 8.

[0046] This setting can make full use of the internal space of the in-vehicle microwave oven, while avoiding the EMC signal interference caused by the filter board 86 to the frequency conversion board 82. No other electronic components are arranged between the fan assembly and the frequency conversion board 82, ensuring that the in-vehicle microwave oven meets the temperature rise requirements in the extreme high-temperature environment in summer, making it possible to further reduce the size of the in-vehicle microwave oven. As part of the embodiment of the present utility model, when the frequency conversion board assembly and the magnetron assembly are arranged vertically, a frequency conversion board bracket 85 is arranged at the bottom of the electrical cavity 8 for fixedly assembling the frequency conversion board assembly 82.

[0047] The in-vehicle microwave oven further includes a wind guide cover 88 communicated with the heating cavity 6. The heating cavity 6 includes a top cover plate 62 at the top. The wind guide cover 88 is fixedly connected to the top cover plate 62, and a filter assembly 3 is arranged at the outlet end of the wind guide cover 88. This setting can filter moisture, oil droplets, etc. generated in the heating cavity 6 to ensure that the air in the cockpit will not be polluted when heating food. The specific structure of the filter assembly 3 is the prior art and will not be elaborated here. Correspondingly, a first air outlet 51 is arranged at a position near the middle at the top of the front cover plate 5. The first air outlet 51 is correspondingly communicated with the heat dissipation hole at the top of the heating cavity 6 for discharging the hot air inside the heating cavity to dissipate heat from the heating cavity, and the wind guide cover 88 covers the first air outlet 51. Second air outlets 52 are arranged at positions near both ends at the top of the front cover plate 5. The second air outlets 52 are located at both ends of the first air outlet 51, and the second air outlets 52 are communicated with the electrical cavity for discharging the heat dissipation hot air in the electrical cavity to ensure good heat dissipation in the electrical cavity 8.

[0048] Further, the upper bracket of the microwave oven includes a first bracket 41 and a second bracket 42. The first bracket 41 and the second bracket 42 are arranged in a mirror image. Taking the structure of the first bracket 41 as an example. The first bracket 41 includes a stop strip 411, a first connection position 412 and a second connection position 413. The first connection position 412 and the second connection position 413 are arranged at the top of the stop strip 411. The stop strip 411 is arranged in a vertical strip structure. The stop strip 411 is perpendicular to the front cover plate 5. The first connection position 412 is arranged at the top of the stop strip 411, and the first connection position 412 is perpendicular to the stop strip 411. Correspondingly, an upward flange 53 is arranged at the top of the front cover plate 5. The upward flange 53 extends backward. The first connection position 412 is parallel to the upper part of the upward flange 53, and the first connection position 412 covers a part of the upward flange 53. Screws or other connecting pieces pass through the first connection position 412 and the upward flange 53 of the front cover plate 5 to fix the upper bracket on the microwave oven, realizing the fixed connection between the upper bracket and the microwave oven.

[0049] Furthermore, a second connecting position 413 is also provided on the first connecting position 412. The second connecting position 413 is perpendicular to the first connecting position 412 and is connected to the rear edge of the first connecting position 412, protruding upward and extending. The second connecting position 413 is parallel to the front cover plate 5. Screws or other connecting pieces pass through the second connecting position 413 and the connecting part 2011 on the head cabinet to fixedly connect the upper bracket to the head cabinet, thereby realizing the connection and fixation of the microwave oven to the head cabinet through the upper bracket. A first notch 414 is also provided at the connection transition part between the retaining strip 411 and the first connecting position 412. The upper bracket abuts against the top of the front cover plate 5 near the end through the first notch 414, playing a role of limiting and guiding the installation of the upper bracket.

[0050] As part of the embodiment of the present utility model, a guiding groove 431 is formed by partial downward depression of the bottom bracket 43. A second notch 432 is provided at the end of the guiding groove 431. A limiting member 433 is provided on the side close to the furnace foot 141 of the second notch 432. The projection of the limiting member 433 on the horizontal plane is semicircular. The limiting member 433 includes a contraction part and an extension part for limiting and fixing the furnace foot 141. During assembly, the furnace foot 141 slides forward along the guiding groove 431 to the second notch 432 and is limited and fixed by the limiting member 433 in the front, left-rear, up-down directions.

[0051] Preferably, the bottom bracket 43 further includes a concave part 434. A connecting hole is provided in the concave part 434. The lowest point of the connecting hole is in the same plane as the guiding groove 431 for fixed assembly with the head cabinet. This setting can increase the contact points between the bottom bracket 43 and the head cabinet, making the overall force evenly distributed and reliable, and capable of meeting the installation requirements of the vehicle-mounted scenario; at the same time, it gives the bottom bracket 43 a certain deformation space, so that even if individual bolts are loose, it can still fit tightly with the head cabinet to avoid abnormal noises.

[0052] Preferably, there are multiple concave parts 434 and they are symmetrically distributed on the left and right sides of the guiding groove 431. This setting makes the forces on both sides of the bottom bracket 43 evenly distributed and has a long service life. Preferably, flanges 435 are provided on both sides of the bottom bracket 43 and the flanges 435 extend upward. This setting makes both sides of the bottom bracket 43 have a certain height for easy grasping and further increases its structural strength.

[0053] As part of the embodiment of the present utility model, the front bracket 44 is arranged in an inverted "L" shape. The front bracket 44 includes connecting ears 441, connecting plates 442 and supporting plates 443. There are two connecting ears 441, and the connecting ears 441 are attached to the avoidance groove 144. Each of the two connecting ears 411 is connected to a connecting plate 442 at a position close to each other. The connecting plate 442 is perpendicular to the connecting ear 441 and extends downward; the ends of the two connecting plates 442 are connected by a supporting plate 443, and the supporting plate 443 is parallel to the bottom plate 14. Screws or other connecting pieces pass through the supporting plate 443 and are connected to the head cabinet 200.

[0054] Further, the head cabinet 200 includes a top cover 201, a bottom platform 202, a left side plate 203 and a right side plate 204. The top cover 201, the bottom platform 202, the left side plate 203 and the right side plate 204 enclose a receiving cavity with an opening at the front side, and the microwave oven is installed in the receiving cavity. Screw holes are provided on both the top cover 201 and the bottom platform 202. The tops of the first bracket 41 and the second bracket 42 are both connected to the top cover 201 of the head cabinet 200. The bottom bracket 43 and the front bracket 44 are both connected to the bottom platform 202 of the head cabinet 200.

[0055] Specifically, a connecting portion 2011 is provided on the top cover 201 of the head cabinet 200. The connecting portion 2011 is arranged in a long strip shape. The positions of the connecting portion 2011 close to both ends are respectively connected to the first bracket 41 and the second bracket 42. The connecting portion 2011 includes a vertical plate 2011a and a horizontal plate 2011b. The vertical plate 2011a and the horizontal plate 2011b are perpendicular to each other, forming a vertical corner structure. The horizontal plate 2011b is attached to the lower surface of the top cover 201, so that the vertical plate 2011a is parallel to the second connection position 413 of the upper bracket. Screws pass through the second connection position 413 and the vertical plate 2011a to realize the stable connection between the upper part of the microwave oven and the head cabinet.

[0056] Preferably, the connecting portion 2011 can also be integrally provided with the top cover 201 of the head cabinet, or the horizontal plate 2011b can be omitted, and the vertical plate 2011a is directly provided on the lower surface of the top cover 201.

[0057] A wave-transmitting plate (not shown in the figure) is adhesively fixed to the lower side of the top cover plate 62. A filter bracket 87 and a filter plate 86 are sequentially arranged above the top cover plate 62. The wave-transmitting plate is connected to the top cover plate 62 in a fastening connection manner and is connected to the filter bracket 87 in a clamping connection manner. By respectively arranging the filter bracket 87 and the wave-transmitting plate on the upper and lower sides of the top cover plate 62 and carrying out specific connection and fixation, on the one hand, the relevant components in the in-vehicle microwave oven can be arranged more compactly, improving the space utilization rate of the in-vehicle microwave oven itself, and on the other hand, it is beneficial to improve the connection strength of the relevant components to avoid the situation that the components are separated or fall off due to the bumping or vibration of the vehicle.

[0058] As part of the embodiment of the present utility model, filtering brackets 87 are provided on both sides of the top cover plate 62. This setting enables any one of the filtering brackets 87 to be provided with a filtering plate 86, so as to improve the compatibility of relevant components during production and assembly, and enable one part to meet the assembly requirements of different models.

[0059] The ratio of the air inlet area to the air outlet area of the electrical cavity 8 is 1.5 - 3:1, the ratio of the air inlet area to the air outlet area of the heating cavity 6 is 1.1 - 1.5:1, and the ratio of the air outlet area of the electrical cavity to the air inlet area of the heating cavity is 1.5 - 3:1. Preferably, the ratio of the air inlet area to the air outlet area of the electrical cavity 8 is 1.7 - 2.4:1, the ratio of the air inlet area to the air outlet area of the heating cavity 6 is 1.2 - 1.4:1, and the ratio of the air outlet area of the electrical cavity 8 to the air inlet area of the heating cavity 6 is 2.2 - 2.5:1. The air inlet area and the air outlet area of the heating cavity 6 are 1310 mm2 and 972.4 mm2 respectively, and the air inlet area and the air outlet area of the electrical cavity 8 are 6004.5 mm2 and 3164.7 mm2 respectively. The air inlet surface of the electrical cavity is also the total air inlet area of the in-vehicle microwave oven. This setting keeps the electrical cavity 8 and the heating cavity 6 under positive pressure, ensuring good heat dissipation and anti-condensation effects of the in-vehicle microwave oven as a whole.

[0060] Although the present utility model is disclosed as above, the present utility model 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 utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

Claims

1. A vehicle-mounted microwave oven, characterized in that: include: A housing (1) including side panels; A heating chamber (6), the heating chamber (6) being located inside the housing (1) and being used for containing food to be heated; A door assembly (2) located on the front side of the housing (1) and used for sealing or opening the heating chamber (6); An electrical chamber (8) is located on one side of the heating chamber (6); the electrical chamber (8) comprises a magnetron assembly (81) and a frequency conversion board assembly (82); the frequency conversion board assembly (82) is arranged on the outside of the magnetron assembly (81); the frequency conversion board assembly (82) and the magnetron assembly (81) are separated by a side plate; a first fan (71) is arranged on the rear side of the magnetron assembly (81); and a second fan (72) is arranged on the rear side of the frequency conversion board assembly (82); the first fan (71) and the second fan (72) respectively dissipate heat for the magnetron assembly (81) and the frequency conversion board assembly (82).

2. The vehicle-mounted microwave oven according to claim 1, characterized in that: The frequency conversion board assembly (82) is arranged outside the magnetron assembly (81), and the two are distributed horizontally or in a horizontally staggered manner.

3. The vehicle-mounted microwave oven according to claim 1, characterized in that: The frequency conversion board assembly (82) comprises a shell and a frequency conversion board, wherein the frequency conversion board is installed inside the shell, and the shell is fixed to the outer side of the side plate of the outer shell, and the frequency conversion board assembly (82) is separated from the magnetron assembly (81) by the side plate. A second fan (72) is arranged on the rear side of the shell, and the second fan (72) is used to dissipate heat for the frequency conversion board assembly (82) inside the shell.

4. The vehicle-mounted microwave oven according to claim 3, characterized in that: The position of the shell body close to the rear side is arranged as a flared structure.

5. The vehicle-mounted microwave oven according to claim 3, characterized in that: The position near the front of the shell is provided with a breathable structure, and air circulates at the front and rear sides of the shell. The second fan (72) guides the incoming air to pass through the frequency conversion board assembly (82) and then be discharged through the breathable structure.

6. The vehicle-mounted microwave oven according to claim 1, characterized in that: The housing (1) comprises a top plate (11), a first side plate (12), a second side plate (13) and a bottom plate (14); the first side plate (12) and the second side plate (13) are respectively located on both sides of the top plate (11) and the bottom plate (14); the magnetron assembly (81) is arranged on the inner side of the second side plate (13); and the frequency conversion board assembly (82) is arranged on the outer side of the second side plate (13).

7. The vehicle-mounted microwave oven according to claim 6, characterized in that: A waveguide box (83) is arranged on the top of the heating chamber (6), one end of the waveguide box (83) extends into the electrical chamber (8), and the top of the magnetron assembly (81) is connected to the waveguide box (83).

8. The vehicle-mounted microwave oven according to claim 6, characterized in that: The side surface of the magnetron assembly (81) is connected to the second side plate (13) and / or the side surface of the heating chamber (6), and a first fan (71) is arranged on the rear plate of the heating chamber (6) at a position corresponding to the magnetron assembly (81).

9. The vehicle-mounted microwave oven according to claim 1, characterized in that: A filter plate (86) is arranged on the top of the heating cavity (6), and the filter plate (86) is located on a side of the heating cavity (6) away from the electrical cavity (8).

10. The vehicle-mounted microwave oven according to claim 6, characterized in that: The heating cavity (6) is arranged on the upper part of the bottom plate (14); the bottom plate (14) is partially raised on a side away from the heating cavity (6) to form a first raised portion (142); the first raised portion (142) is raised downward; and the first raised portion (142) is used to avoid a driving structure that drives the microwave oven to rotate.

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