Microwave oven

Abstract

The invention discloses a microwave oven, and belongs to the field of kitchen appliances. The shell comprises a front panel and an outer shell, the peripheral side edge of the front panel is connected with the outer shell to form a containing cavity, a first air guide opening is formed in the front panel, a second air guide opening is formed in the back face of the outer shell, and a main heat dissipation path extending linearly is formed between the first air guide opening and the second air guide opening; the cooking cavity is installed in the containing cavity, a cooking opening of the cooking cavity is connected with the front panel, and the cooking opening and the first air guide opening are located on the same side; the first electric device and the second electric device are distributed in the main heat dissipation path in the direction perpendicular to the main heat dissipation path; the fan assembly is installed at the first air guide opening, and the air inlet and outlet direction of the fan assembly is the same as the main heat dissipation path. The space utilization rate of internal devices of the microwave oven can be increased, and the heat dissipation effect of the internal devices of the microwave oven can be improved.

Description

Technical Field

[0001] The present application relates to the field of kitchen appliances, and in particular to a microwave oven. Background Art

[0002] The electronic components inside the microwave oven, such as magnetron, transformer, capacitor, etc., will generate heat when working. This heat needs to be dissipated in time to prevent the components from overheating and affecting their performance and life. In the prior art, in order to dissipate the heat of the microwave oven, a heat dissipation system is generally provided inside the microwave oven to dissipate the heat of the internal electronic components.

[0003] For example, in the related art, the patent with application announcement number CN104154576A discloses an embedded microwave oven, including: a shell, a furnace door, a cavity plate, a left fixed plate, a right fixed plate, a fan and an electrical component. The shell includes: a front panel, a rear panel, two side panels, an upper panel and a lower panel, and upper and lower air outlets are respectively arranged on the front panel, and a first air inlet is arranged on the rear panel; the cavity includes an upper panel, a lower panel and two side panels, an electrical room is arranged between the upper panel and the upper panel, an air guide channel is arranged between one side panel and the other side panel, a heat dissipation room is arranged between the lower panel and the lower panel, and vents are arranged on the left and right fixed plates, and are respectively fixedly connected to the shell. The embedded microwave oven provided by the present invention has upper and lower air outlets arranged on the front panel, vents are arranged on the left and right fixed plates, and a first air inlet is arranged on the rear panel. This structure increases the air inlet and outlet volume, so that the electrical components are fully cooled, the working temperature of the electrical components is reduced, and the service life of the electrical components is extended.

[0004] For another example, in the related art, the patent with application announcement number CN113944941A discloses a microwave oven, comprising: a housing; a cooking cavity, the cooking cavity is arranged inside the housing, a first accommodation space is formed between the rear plate of the cooking cavity and the rear plate of the housing, a second accommodation space is formed between the top plate of the cooking cavity and the top plate of the housing, and the second accommodation space is connected to the first accommodation space; a first electrical component, the first electrical component is arranged in the first accommodation space; a second electrical component, the second electrical component is arranged in the second accommodation space; a cooling fan, the cooling fan is arranged in the first accommodation space, and the cooling fan is configured to drive the airflow to move from bottom to top, forming cooling wind flowing through the first accommodation space and the second accommodation space. When the cooling fan is running, it drives the airflow to move from bottom to top, and the cooling wind flows through the first accommodation space and the second accommodation space in sequence, thereby cooling the first electrical component and the second electrical component. Thus, a plurality of electrical components arranged in the cooling air duct can be cooled by one cooling fan.

[0005] Regarding the above-mentioned related technologies, the principle is to make air pass through multiple spaces in sequence so as to utilize the air to cool the electrical appliances in the multiple spaces. As a result, the main heat dissipation path becomes longer and the heat dissipation effect of the electrical appliances at the rear end of the air flow path becomes worse. At the same time, the air inlet and air outlet of this type of microwave oven are adjacent to each other, and the hot air discharged from the microwave oven is re-sucked into the air inlet before being fully cooled, affecting the heat dissipation effect of the electrical appliances inside the microwave oven. Summary of the invention

[0006] In order to help improve the space utilization rate of internal components of a microwave oven and improve the heat dissipation effect of the internal components of the microwave oven, the present application provides a microwave oven.

[0007] The present application provides a microwave oven that adopts the following technical solution: A microwave oven, comprising: The housing comprises a front panel and an outer shell, wherein the peripheral side of the front panel is connected to the outer shell to form an accommodating cavity, the front panel is provided with a first air guide port, and the back of the outer shell is provided with a second air guide port, and a main heat dissipation path extending in a straight line is formed between the first air guide port and the second air guide port; A cooking cavity is installed in the accommodating cavity, a cooking port of the cooking cavity is connected to the front panel, and the cooking port and the first air guide port are located on the same side; The first electrical component and the second electrical component are distributed in the main heat dissipation path along a direction perpendicular to the main heat dissipation path; A fan assembly is installed at the first air guide port, and the air inlet and outlet directions of the fan assembly are the same as the main heat dissipation path.

[0008] By adopting the above technical solution, the internal electrical components are rearranged, the heat dissipation path can be effectively shortened while improving the space utilization rate, and the first electrical component and the second electrical component are distributed in the main heat dissipation path in a direction perpendicular to the main heat dissipation path, so that the electrical components can be fully distributed in the main heat dissipation path, and the fresh air in the heat dissipation path can fully contact the electrical components, thereby improving the heat dissipation effect on the electrical components; in addition, the first air guide and the second air guide are respectively located on different sides, reducing the hot air coming out of the microwave oven from being sucked back into the microwave oven, so that the air temperature entering the first air guide or the second air guide is basically consistent with the air temperature in the external environment, thereby further improving the heat dissipation effect on the internal electrical components of the microwave oven. The present application has a compact structure, a short heat dissipation path, and a good heat dissipation effect.

[0009] Optionally, the first electrical component is installed at the bottom of the cooking cavity, the second electrical component is arranged between the bottom of the cooking cavity and the outer shell, the first electrical component and the second electrical component are opposite to the fan assembly, and the microwave oven also includes a third electrical component, a fourth electrical component and a fifth electrical component, the third electrical component and the fourth electrical component are respectively arranged on the upper and lower sides of the second electrical component, and the fifth electrical component is located behind the second electrical component along the main heat dissipation path.

[0010] By adopting the above technical solution, the spatial layout between the first electrical component and the second electrical component is made more reasonable, which is conducive to improving the space utilization rate inside the microwave oven. At the same time, the installation positions of the third electrical component, the fourth electrical component and the fifth electrical component further optimize the layout of the electrical components and reduce the space occupied.

[0011] Optionally, a partition is installed on the outer wall of the cooking cavity, and the partition separates the main heat dissipation path to form a first main heat dissipation path and a second main heat dissipation path. The first electrical component is installed on the partition and is located on the first main heat dissipation path. The second electrical component is installed on the bottom of the cooking cavity and is located on the second main heat dissipation path. The third electrical component, the fourth electrical component and the fifth electrical component are located on the second main heat dissipation path.

[0012] By adopting the above technical solution, the partition separates the main heat dissipation path into the first main heat dissipation path and the second main heat dissipation path, so that the first electrical device and the second electrical device are respectively installed in different heat dissipation paths, which improves the heat dissipation efficiency and reduces the heat accumulation, thereby extending the service life of the electrical device. At the same time, the third electrical device, the fourth electrical device and the fifth electrical device are also located in the second main heat dissipation path, further optimizing the heat dissipation layout, ensuring that the temperature distribution inside the entire microwave oven is more uniform, and improving the overall performance of the device.

[0013] Optionally, the first electrical component is a magnetron, the second electrical component is a frequency conversion module, the third electrical component is a microwave stirring motor, the fourth electrical component is an electronic board, and the fifth electrical component is a filter board, and the electronic board is electrically connected to the magnetron, frequency conversion module, microwave stirring motor and filter board, respectively.

[0014] By adopting the above technical solution, the layout of electrical components can be rationally planned, space utilization can be enhanced and heat dissipation effect can be effectively guaranteed.

[0015] Optionally, cooking heat dissipation holes are opened on the left and right sides of the cooking cavity, the cooking heat dissipation holes are close to the second air duct, the first electrical component and the second electrical component are arranged close to the first air duct, and an auxiliary heat dissipation path connected to the main heat dissipation path is formed between the left and right side walls of the cooking cavity and the outer shell.

[0016] By adopting the above technical solution, cooking heat dissipation holes are opened on the left and right sides of the cooking cavity, and these heat dissipation holes are close to the second air guide port, which helps to improve the efficiency of discharging heat generated during cooking, ensure that the temperature in the cooking cavity is more uniform, and avoid local overheating. At the same time, the first electrical component and the second electrical component are arranged close to the first air guide port, so that these electrical components can quickly dissipate heat during operation and extend their service life. Such a design allows the air to maintain the maximum heat dissipation efficiency during circulation, and improves the heat dissipation effect on the electrical components inside the microwave oven.

[0017] Optionally, the front panel is provided with a microwave window connected to the cooking port, a mesh microwave shielding oven door is installed on the front side of the microwave window, a mesh heat dissipation panel is installed on the front side of the first air guide port, and the mesh microwave shielding oven door and the mesh heat dissipation panel are configured into a structure that can shield microwaves and is breathable.

[0018] By adopting the above technical solution, the microwave window and the first air guide of the microwave oven are both equipped with a mesh microwave shielding door and a mesh heat dissipation panel. These components can not only effectively block microwave leakage and ensure safe use, but also maintain good ventilation and heat dissipation performance, prevent internal heat accumulation, and improve the overall working stability and service life of the microwave oven. In addition, this solution can improve the simplicity and aesthetics of the external structure of the microwave oven.

[0019] Optionally, the mesh microwave shielding oven door comprises: Face frame; The door body is sleeved in the face frame, and a choke protection structure is provided at the center of the door body; A first protective shielding sheet is arranged on one side of the face frame, the protective shielding sheet has a plurality of through holes of the same specification, regular shape and uniform distribution, and the protective shielding sheet is configured to be a structure capable of shielding microwaves and being breathable; The mesh heat dissipation panel includes a second protective shielding sheet, and the structure of the second protective shielding sheet is the same as that of the first protective shielding sheet.

[0020] By adopting the above technical scheme, the traditional combination of glass observation window and metal microporous shielding mesh is eliminated. The combination of choke protection structure and protective shielding sheet is used, which can not only effectively shield microwaves, but also dissipate heat, thereby ensuring the uniformity of heat in the microwave oven and improving the safety of microwaves.

[0021] Optionally, a control knob for adjusting the function of the microwave oven is installed on the front side of the second protective shielding sheet, and the connection line of the control knob can extend through the mesh heat dissipation panel and the front panel to the main heat dissipation path.

[0022] By adopting the above technical solution, the control knob is installed on the front side of the protective shielding sheet, which is not only convenient for users to operate, but also can effectively utilize the space. At the same time, the connection line of the control knob can pass through the mesh heat dissipation panel and the front panel to extend into the heat dissipation path, ensuring the safety and reliability of the circuit and avoiding the risk of short circuit or electric shock caused by exposed lines. In addition, this design also improves the overall aesthetics and ease of use of the microwave oven.

[0023] Optionally, the fan assembly includes two fans, and the two fans are distributed perpendicular to the direction of the main heat dissipation path.

[0024] By adopting the above technical solution, the dual-fan design significantly improves the heat dissipation efficiency of the microwave oven, while ensuring that the heat generated during the cooking process can be quickly and effectively discharged, thereby improving the overall performance and service life of the microwave oven. Specifically: the dual-fan arrangement makes the airflow more uniform, effectively avoiding the local overheating problem that may be caused by a single fan; the fan design distributed perpendicular to the direction of the main heat dissipation path allows the airflow to flow more smoothly along the main heat dissipation path, enhancing the heat dissipation effect; the design also reduces the noise when the fan is running, improving the user experience.

[0025] Optionally, a bottom heat dissipation hole is opened at the bottom of the shell.

[0026] By adopting the above technical solution, the bottom heat dissipation holes opened at the bottom of the shell can further enhance the overall heat dissipation performance of the microwave oven, ensuring that the heat in the bottom area is effectively dissipated, thereby improving the stability and service life of the microwave oven.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. By respectively providing the first air guide port and the second air guide port on the front panel and the housing, a main heat dissipation path extending in a straight line is formed, and the first electrical component and the second electrical component are distributed in a direction perpendicular to the main heat dissipation path, which significantly improves the heat dissipation efficiency and heat dissipation uniformity, ensures that the internal electrical components can still work stably under high load, and prolongs the service life of the microwave oven; 2. A partition is installed on the outer wall of the cooking cavity to separate the main heat dissipation path into a first main heat dissipation path and a second main heat dissipation path, so that each electrical component dissipates heat in an independent heat dissipation path, further enhancing the heat dissipation effect and reducing mutual interference; 3. The mesh microwave shielding oven door and mesh heat dissipation panel are configured into a structure that can shield microwaves and is breathable, effectively preventing microwave leakage, while ensuring the heat dissipation effect, and improving the safety and reliability of the microwave oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the microwave oven in the embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the first electrical device mainly showing a hidden portion of the housing structure in the embodiment of the present application.

[0030] Figure 3 It is a schematic diagram of the embodiment of the present application in which a portion of the housing structure is hidden and mainly displays the second electrical device.

[0031] Figure 4 It is a schematic diagram of the hidden portion of the shell structure in the embodiment of the present application, mainly showing the first main heat dissipation path and the second main heat dissipation path.

[0032] Figure 5 It is a schematic diagram of an explosion of a mesh microwave shielding oven door in an embodiment of the present application.

[0033] Description of reference numerals: 10. Shell; 11. Front panel; 111. First air duct; 12. Shell; 121. Second air duct; 122. Bottom heat dissipation hole; 20. Cooking cavity; 21. Partition; 22. Cooking heat dissipation hole; 30. First electrical component; 40. Second electrical component; 50. Fan assembly; 60. Main heat dissipation path; 61. First main heat dissipation path; 62. Second main heat dissipation path; 63. Auxiliary heat dissipation path; 70. Third electrical component; 71. Fourth electrical component; 72. Fifth electrical component; 80. Mesh microwave shielding oven door; 81. Face frame; 82. Door body; 83. Choke protection structure; 84. First protective shielding plate; 841. Through hole; 90. Mesh heat dissipation panel; 91. Second protective shielding plate; 92. Control knob. DETAILED DESCRIPTION

[0034] The following will be combined with the attached Figure 1-5 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0035] The inventors of the present application have discovered that the existing microwave ovens have a long heat dissipation path, and internal electrical components are prone to overheating due to poor heat dissipation during long-term use, thereby reducing their service life. To this end, the present application mainly adopts the following scheme to achieve the effect of improving the heat dissipation efficiency and ensuring that the microwave oven can still work stably under high load. The present application is further described in detail below.

[0036] Reference Figure 1-3The microwave oven provided in the embodiment of the present application comprises a housing 10, a cooking cavity 20, a first electrical device 30, a second electrical device 40 and a fan assembly 50. The housing 10 comprises a front panel 11 and a shell 12, the peripheral side of the front panel 11 is connected to the shell 12 to form a receiving cavity, the front panel 11 is provided with a first air guide port 111, the back of the shell 12 is provided with a second air guide port 121, and a main heat dissipation path 60 extending in a straight line is formed between the first air guide port 111 and the second air guide port 121. The cooking cavity 20 is installed in the receiving cavity, the cooking port of the cooking cavity 20 is connected to the front panel 11, and the cooking port and the first air guide port 111 are located on the same side. The first electrical device 30 and the second electrical device 40 are distributed in the main heat dissipation path 60 along a direction perpendicular to the main heat dissipation path 60. The fan assembly 50 is installed at the first air guide port 111, and the air inlet and outlet directions of the fan assembly 50 are the same as those of the main heat dissipation path 60.

[0037] Specifically, the front panel 11 and the shell 12 are fixedly connected by means of screws or buckles to form a closed accommodating cavity. The first air guide 111 provided on the front panel 11 may be one or more, and is used to introduce external cold air. The second air guide 121 provided on the back of the shell 12 may also be one or more, and is used to discharge the heated hot air. A mesh heat sink may be installed at the second air guide 121 to reduce dust from entering the interior of the microwave oven. The main heat dissipation path 60 formed between the first air guide 111 and the second air guide 121 extends in a straight line, which is conducive to smooth airflow and improves heat dissipation efficiency. In other embodiments, the first air guide 111 may also be used as an exhaust port, and the second air guide 121 may be used as an air inlet.

[0038] The cooking cavity 20 is installed in the accommodating cavity, and its cooking port is connected to the front panel 11. The front panel 11 is provided with a microwave window connected to the cooking port, so that the user can directly see the cooking process.

[0039] Reference Figure 3 and Figure 4 In this embodiment, a partition 21 is installed on the bottom outer wall of the cooking cavity 20, and the partition 21 separates the main heat dissipation path 60 to form a first main heat dissipation path 61 and a second main heat dissipation path 62. The first electrical component 30 is installed on the partition 21 and is located on the first main heat dissipation path 61. The second electrical component 40 is arranged between the bottom of the cooking cavity 20 and the outer shell 12 and is located on the second main heat dissipation path 62.

[0040] Specifically, the partition 21 can be made of metal or composite material, which has good thermal conductivity and mechanical strength. The thickness of the partition 21 can be adjusted according to actual needs to achieve the best heat dissipation effect.

[0041] In this embodiment, the first electrical device 30 is a magnetron for generating microwaves, and the second electrical device 40 is a frequency conversion module for controlling the microwave frequency. The first electrical device 30 and the second electrical device 40 are main power devices, and the required heat dissipation requirements are higher. The first electrical device 30 and the second electrical device 40 are both facing the fan assembly 50, and the fresh air entering from the fan assembly 50 can directly contact the first electrical device 30 and the second electrical device 40, which helps to improve the heat dissipation effect.

[0042] The microwave oven further comprises a third electrical component 70, a fourth electrical component 71 and a fifth electrical component 72. In this embodiment, the third electrical component 70 is a microwave stirring motor, the fourth electrical component 71 is an electronic board, and the fifth electrical component 72 is a filter board. The electronic board is electrically connected to the magnetron, the frequency conversion module, the microwave stirring motor and the filter board respectively. The third electrical component 70 is installed at the bottom of the cooking cavity 20, the fourth electrical component 71 is fixed to the inner wall of the bottom side of the shell 12 by screws, and the third electrical component 70 and the fourth electrical component 71 are respectively arranged on the upper and lower sides of the second electrical component 40. Specifically, the second electrical component 40 can be fixed to the inner wall of the bottom side of the shell 12. At the same time, the fifth electrical component 72 is located behind the second electrical component 40 along the main heat dissipation path 60. Through the precise design and layout of the electrical components, the mutual interference of the electrical components can be reduced and the heat dissipation effect of the electrical components can be improved.

[0043] Furthermore, cooking heat dissipation holes 22 are opened on the left and right sides of the cooking cavity 20, and the cooking heat dissipation holes 22 are close to the side of the second air duct 121. The first electrical component 30 and the second electrical component 40 are arranged close to the first air duct 111, and an auxiliary heat dissipation path 63 connected to the main heat dissipation path 60 is formed between the left and right side walls of the cooking cavity 20 and the outer shell 12.

[0044] Specifically, the cooking heat dissipation hole 22 may be circular, square or polygonal, and the diameter or side length is generally between 1.5-3 mm, so that it can both dissipate heat and shield microwaves. The number of the cooking heat dissipation holes 22 can be adjusted according to actual needs, and is generally evenly distributed. The cooking heat dissipation hole 22 is close to one side of the second air guide port 121, so that the hot air in the cooking cavity 20 is directly discharged from the microwave oven without passing through the first electrical component 30 and the second electrical component 40, thereby accelerating the heat dissipation efficiency and ensuring the cooling effect of the first electrical component 30 and the second electrical component 40.

[0045] In this embodiment, the fan assembly 50 includes dual fans, and the two fans are installed on the back side of the front panel 11 in a direction perpendicular to the main heat dissipation path 60. The fan can be driven by a DC brushless motor, which has the characteristics of low noise and long life. The dual-fan design significantly improves the heat dissipation efficiency of the microwave oven, while ensuring that the heat generated during the cooking process can be quickly and effectively discharged, thereby improving the overall performance and service life of the microwave oven. Specifically: the arrangement of the dual fans makes the airflow more uniform, effectively avoiding the problem of local overheating that may be caused by a single fan; the fan design distributed in a direction perpendicular to the main heat dissipation path 60 allows the airflow to flow more smoothly along the main heat dissipation path 60, enhancing the heat dissipation effect; the design also reduces the noise when the fan is running, improving the user experience.

[0046] Reference Figure 1 and Figure 2 In addition, a mesh microwave shielding oven door 80 is hingedly installed on the front side of the microwave window, and a mesh heat dissipation panel 90 is installed on the front side of the first air guide port 111. The mesh microwave shielding oven door 80 and the mesh heat dissipation panel 90 are configured to form a structure that can shield microwaves and is breathable.

[0047] Reference Figure 1 and Figure 5 In this embodiment, the mesh microwave shielding oven door 80 includes a face frame 81 and a door body 82. The face frame 81 can be made of metal and has good rigidity and high temperature resistance. The face frame 81 is composed of two detachably connected parts. The door body 82 is set in the face frame 81, and a choke protection structure 83 is provided in the center to prevent microwave leakage. Specifically, the choke protection structure 83 can be a microwave mesh plate structure in the prior art, which can shield microwaves and is also breathable. The connection between the door body 82 and the choke protection structure 83 can be adhesive or integrally formed.

[0048] A first protective shielding sheet 84 is also installed on the front side of the face frame 81. The first protective shielding sheet 84 has a number of through holes 841 of the same specification, regular shape and uniform distribution. The aperture of the through hole 841 is 1.5mm-3mm, and the mesh number of the through hole 841 is 1600-4000 mesh. The choke protection structure 83 plays a role in shielding most of the microwaves. The first protective shielding sheet 84 has a larger heat dissipation area and partial microwave shielding function. Such a design enables the solution to have both better microwave shielding function and good heat dissipation function.

[0049] In this embodiment, the mesh heat dissipation panel 90 includes a second protective shielding sheet 91, and the structure of the second protective shielding sheet 91 is the same as that of the first protective shielding sheet 84. Since the amount of microwaves in the heat dissipation path is small, the second protective shielding sheet 91 can meet the microwave shielding function and effectively improve the heat dissipation efficiency. At the same time, the first protective shielding sheet 84 has the same structure as the second protective shielding sheet 91, which can improve the simplicity and aesthetics of the external structure of the microwave oven.

[0050] Reference Figure 1 and Figure 3 In addition, a control knob 92 for adjusting the function of the microwave oven is installed on the front side of the second protective shielding sheet 91. The connection line of the control knob 92 can pass through the mesh heat dissipation panel 90 and the front panel 11 to extend into the main heat dissipation path 60 and be electrically connected to the third electrical device 70. The control knob 92 is used to adjust the function of the microwave oven, which is not only convenient for users to operate, but also can effectively utilize space.

[0051] Specifically, the control knob 92 is a liquid crystal knob, and the center of the liquid crystal knob can display control parameters to facilitate user observation and operation.

[0052] Reference Figure 4 In addition, a bottom heat dissipation hole 122 is opened at the bottom of the shell 12. The bottom heat dissipation hole 122 opened at the bottom of the shell 12 can further enhance the overall heat dissipation performance of the microwave oven, ensure that the heat in the bottom area is effectively dissipated, thereby improving the stability and service life of the microwave oven.

[0053] This product can be a microwave oven with an input power of 850W and an output power of 500W. During the actual test process, since the heat can be effectively dissipated, its heating uniformity performance reaches 62%. Under different test conditions, the temperature of the internal electrical components of the product of this application can be effectively controlled.

[0054] For example, this product is placed in the test cabinet as required, powered by 1.06 times the rated voltage, and the test method is carried out in accordance with the requirements of Articles 11.2, 11.7, 11.8 of Chapter 11 and Appendix AA.11 of GB4706.21-2008. The test results are: For example, this product works when the controller is set to the most unfavorable position and there is no load in the cavity. (The working time is the longest time that the timer can be set or the time required to establish a stable working state or when the thermostat is activated, whichever is shorter). The test results are: For example, the product operates under normal working conditions and disables the timer or other controller that works in normal use. (At least 120 minutes of operation). The test results are: In summary, it can be seen that the heat dissipation of each electrical component in the product of the present application can be effectively controlled, and the product of the present application has excellent heat dissipation performance.

[0055] The implementation principle of this embodiment is as follows: a main heat dissipation path 60 extending in a straight line is formed by setting a first air guide port 111 and a second air guide port 121 on the front panel 11 and the housing 12. The first electrical device 30 and the second electrical device 40 are distributed in a direction perpendicular to the main heat dissipation path 60, and the fan assembly 50 is installed at the first air guide port 111, and its air inlet and outlet direction is the same as that of the main heat dissipation path 60. This design can effectively guide cold air into the interior of the microwave oven, take away the heat generated by the electrical devices, improve the heat dissipation efficiency, ensure that the microwave oven can still work stably under high load, and extend the service life.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A microwave oven, characterized in that: include: A housing (10) comprising a front panel (11) and an outer shell (12), wherein the peripheral side of the front panel (11) is connected to the outer shell (12) to form a receiving cavity, the front panel (11) is provided with a first air guide port (111), and the back of the outer shell (12) is provided with a second air guide port (121), and a main heat dissipation path (60) extending in a straight line is formed between the first air guide port (111) and the second air guide port (121); A cooking cavity (20) is installed in the accommodating cavity, a cooking port of the cooking cavity (20) is connected to the front panel (11), and the cooking port and the first air guide port (111) are located on the same side; A first electrical device (30) and a second electrical device (40) are distributed in the main heat dissipation path (60) along a direction perpendicular to the main heat dissipation path (60); A fan assembly (50) is installed at the first air guide port (111), and the air inlet and outlet directions of the fan assembly (50) are the same as those of the main heat dissipation path (60).

2. The microwave oven according to claim 1, characterized in that: The first electrical component (30) is installed at the bottom of the cooking cavity (20), the second electrical component (40) is arranged between the bottom of the cooking cavity (20) and the housing (12), the first electrical component (30) and the second electrical component (40) are directly opposite to the fan assembly (50), and the microwave oven further comprises a third electrical component (70), a fourth electrical component (71) and a fifth electrical component (72), the third electrical component (70) and the fourth electrical component (71) are arranged at the upper and lower sides of the second electrical component (40), respectively, and the fifth electrical component (72) is located behind the second electrical component (40) along the main heat dissipation path (60).

3. The microwave oven according to claim 2, characterized in that: A partition (21) is installed on the outer wall of the cooking cavity (20), and the partition (21) separates the main heat dissipation path (60) into a first main heat dissipation path (61) and a second main heat dissipation path (62); the first electrical component (30) is installed on the partition (21) and is located on the first main heat dissipation path (61); the second electrical component (40) is installed on the bottom of the cooking cavity (20) and is located on the second main heat dissipation path (62); and the third electrical component (70), the fourth electrical component (71) and the fifth electrical component (72) are located on the second main heat dissipation path (62).

4. The microwave oven according to claim 2, characterized in that: The first electrical component (30) is a magnetron, the second electrical component (40) is a frequency conversion module, the third electrical component (70) is a microwave stirring motor, the fourth electrical component (71) is an electronic board, and the fifth electrical component (72) is a filter board, wherein the electronic board is electrically connected to the magnetron, the frequency conversion module, the microwave stirring motor, and the filter board, respectively.

5. The microwave oven according to claim 1, characterized in that: The left and right sides of the cooking cavity (20) are provided with cooking heat dissipation holes (22), the cooking heat dissipation holes (22) are close to the second air guide port (121), the first electrical component (30) and the second electrical component (40) are arranged close to the first air guide port (111), and a secondary heat dissipation path (63) connected to the main heat dissipation path (60) is formed between the left and right side walls of the cooking cavity (20) and the housing (12).

6. The microwave oven according to claim 1, characterized in that: The front panel (11) is provided with a microwave window connected to the cooking port, a mesh microwave shielding oven door (80) is installed on the front side of the microwave window, a mesh heat dissipation panel (90) is installed on the front side of the first air guide port (111), and the mesh microwave shielding oven door (80) and the mesh heat dissipation panel (90) are configured to form a structure capable of shielding microwaves and being breathable.

7. The microwave oven according to claim 6, characterized in that The mesh microwave shielding oven door (80) comprises: Face Frame (81); A door body (82) is sleeved in the face frame (81), and a choke protection structure (83) is provided at the center of the door body (82); A first protective shielding sheet (84) is arranged on one side of the face frame (81), the protective shielding sheet having a plurality of through holes (841) of the same specification, regular shape and uniform distribution, and the protective shielding sheet is configured into a structure capable of shielding microwaves and being breathable; The mesh heat dissipation panel (90) comprises a second protective shielding sheet (91), and the structure of the second protective shielding sheet (91) is the same as that of the first protective shielding sheet (84).

8. The microwave oven according to claim 6, characterized in that: A control knob (92) for adjusting the function of the microwave oven is installed on the front side of the second protective shielding sheet (91), and a connection line of the control knob (92) can pass through the mesh heat dissipation panel (90) and the front panel (11) and extend into the main heat dissipation path (60).

9. The microwave oven according to claim 1, characterized in that: The fan assembly (50) comprises two fans, and the two fans are distributed perpendicularly to the direction of the main heat dissipation path (60).

10. The microwave oven according to claim 1, characterized in that: The bottom of the housing (12) is provided with a bottom heat dissipation hole (122).

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