microwave oven

Abstract

The microwave oven comprises a housing (1), a fan (2), an inverter (3), and a magnetron (4). The housing (1) has a cooking chamber therein, and the housing further comprises a mounting chamber (12), the mounting chamber (12) including a first mounting chamber (121) at the rear of the cooking chamber, the fan (2) is provided in the first mounting chamber (121), the inverter (3) is provided in the first mounting chamber (121), and the magnetron (4) is provided in the first mounting chamber (121), and the fan (2) and the magnetron (4) are respectively located on both sides of the inverter (30) in the left-right direction of the housing (1).

Description

[Technical Field]

[0001] This application relates to the technical field of household appliances, and in particular to microwave ovens. [Background technology]

[0002] In the related art, there is a problem that the structural layout of the electrical equipment compartment of the microwave oven is irrational, the distribution of heat sources in the electrical equipment compartment is scattered, and the heat-generating electrical elements cannot effectively dissipate heat, which reduces the efficiency of the heat dissipation system. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art by providing a microwave oven that has a good heat dissipation effect from the magnetron and inverter of the microwave oven, thereby improving the overall performance and service life of the microwave oven. [Means for solving the problem]

[0004] A microwave oven according to an embodiment of the present application comprises a housing, a fan, an inverter, and a magnetron. The housing has a cooking chamber within it, and the housing further comprises a mounting chamber, the mounting chamber including a first mounting chamber at the rear of the cooking chamber, the fan is provided within the first mounting chamber, the inverter is provided within the first mounting chamber, and the magnetron is provided within the first mounting chamber, and the fan and the magnetron are respectively provided on both sides of the inverter in the left-right direction of the housing.

[0005] In the microwave oven of the present embodiment, the fan, inverter, and magnetron are installed in the first mounting chamber, the fan and magnetron are respectively located on either side of the inverter in the left-right direction of the housing, and the cooling air blown out from the fan first passes through the inverter to effectively dissipate heat therefrom and removes heat from the inverter before being blown onto the magnetron to achieve heat dissipation to the magnetron. Depending on the heat generated by the magnetron and inverter during their operation and the different requirements for the ambient temperature, the cooling air blown out from the fan can achieve an optimal heat dissipation effect for the magnetron and inverter, and further improve the performance and service life of the entire microwave oven.

[0006] In some embodiments of the present application, there are a plurality of inverters and a plurality of magnetrons, and the magnetrons correspond to the inverters one by one.

[0007] In some embodiments of the present application, the plurality of inverters are distributed in the vertical direction of the housing, and the plurality of magnetrons are distributed in the vertical direction of the housing.

[0008] In some embodiments of the present application, the plurality of inverters include a first inverter and a second inverter, the plurality of magnetrons include a first magnetron and a second magnetron, the first inverter is connected to the first magnetron, and the second inverter is connected to the second magnetron.

[0009] In some embodiments of the present application, the microwave oven further includes an air guide member, the air guide member being provided in the first mounting chamber and positioned between the fan and the magnetron, a heat dissipation air passage being defined within the air guide member, the inverter being positioned within the heat dissipation air passage, the heat dissipation air passage including a heat dissipation inlet facing the fan and a heat dissipation outlet facing the magnetron, and the heat dissipation air passage being used to guide the air blown out from the fan to the inverter and the magnetron.

[0010] In some embodiments of the present application, a first groove is formed on a wall surface of the heat dissipation air duct close to the cooking chamber, the first groove extends along the distribution direction of the fan and the inverter and is located on one side of the inverter, and the heat dissipation inlet and the heat dissipation outlet are connected to the first groove.

[0011] In some embodiments of the present application, the microwave oven further includes a fan case, the fan case being disposed within the mounting chamber and connected to the air guide member, the fan case having a fan chamber and an air intake port and an air exhaust port communicating with the fan chamber, the fan being disposed within the fan chamber and driving an airflow from the air intake port to the air exhaust port, and the heat dissipation inlet being communicated with the air exhaust port.

[0012] In some embodiments of the present application, a cooking air duct communicating with the exhaust port is defined in the air guide member, and the cooking air duct communicates with the cooking chamber.

[0013] In some embodiments of the present application, the cooking air passage includes a second groove, the second groove being formed on the side of the air guide member facing the cooking chamber, one end of the second groove being connected to the exhaust port, and an opening of the second groove being connected to the cooking chamber.

[0014] In some embodiments of the present application, a third groove is provided on the side of the fan case facing the cooking chamber, one end of the third groove is connected to the exhaust port, the other end is connected to the second groove, and the open end of the third groove is connected to the cooking chamber.

[0015] In some embodiments of the present application, there are two cooking air ducts, each located on either side of the inverter fan and the direction perpendicular to the inverter distribution direction, and there are two heat dissipation inlets, each located on either side of the inverter fan and the direction perpendicular to the inverter distribution direction.

[0016] In some embodiments of the present application, the exhaust ports include a first exhaust port, a second exhaust port, a third exhaust port, and a fourth exhaust port, the cooking air duct and the heat dissipation inlet on one side are all connected to the first exhaust port, a communicating air duct is defined between the air guide member and the fan case, the communicating air duct is connected to the second exhaust port, the third exhaust port, and the heat dissipation inlet on the other side, and the fourth exhaust port is connected to the cooking air duct on the other side.

[0017] In some embodiments of the present application, the first exhaust port, the second exhaust port, and the third exhaust port are located on the side of the fan case facing the air guide member and are distributed sequentially in a direction perpendicular to the distribution direction of the fan and the inverter, and the fourth exhaust port is provided on the side of the fan case facing the cooking chamber.

[0018] In some embodiments of the present application, an air outlet passage is further defined in the air guide member, one end of the air outlet passage is connected to the exhaust port, and the air outlet passage has a fifth exhaust port located on one side in a direction perpendicular to the distribution direction of the inverter and the magnetron.

[0019] In some embodiments of the present application, the microwave oven further includes a baffle hood and a baffle cover plate, the baffle cover plate being connected to the baffle hood and jointly defining the heat dissipation air passage, the baffle cover plate being located on one side of the baffle hood away from the cooking chamber, the heat dissipation inlet being provided in the baffle hood, and the baffle hood and the baffle cover plate jointly defining the heat dissipation air passage.

[0020] In some embodiments of the present application, the inverters are plural, and a partition plate is provided in the heat dissipation air duct, and the partition plate is provided between every two adjacent inverters.

[0021] In some embodiments of the present application, the mounting chamber further includes a second mounting chamber on the top side of the cooking chamber, the first mounting chamber is in communication with the second mounting chamber and has a microwave port at the top of the cooking chamber, and the microwave oven further includes a waveguide, the waveguide being disposed within the second mounting chamber, one end of the waveguide being used to collect microwaves emitted from the magnetron and the other end of the waveguide being used to radiate microwaves into the cooking chamber through the microwave port.

[0022] In some embodiments of the present application, the microwave port is located in a central portion of the top of the cooking chamber, and the waveguide is inclined toward one side closer to the magnetron on both the left and right sides of the housing in the front-to-rear direction of the housing.

[0023] In some embodiments of the present application, the mounting chamber further includes a third mounting chamber and a fourth mounting chamber, the third mounting chamber and the fourth mounting chamber being located on both sides of the cooking chamber in the left-right direction of the housing, the third mounting chamber and the fan being located on the same side of the housing, the third mounting chamber being connected to the first mounting chamber, and an intake port connected to the third mounting chamber being provided on the side wall of the housing on the side having the third mounting chamber.

[0024] In some embodiments of the present application, the intake side of the fan faces the rear side of the housing, and the rear wall of the housing has an intake port that communicates with the first mounting chamber.

[0025] In some embodiments of the present application, the housing comprises an inner shell and an outer shell, the outer shell is disposed outside the inner shell, the cooking chamber is defined inside the inner shell, and the mounting chamber is defined between the outer shell and the inner shell.

[0026] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application.

[0027] The above and / or additional aspects and advantages of the present application will become apparent and can be readily understood from the following description of the embodiments taken in conjunction with the drawings. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a rear view of a microwave oven according to an embodiment of the present invention, with the outer shell and the air guide cover plate removed; [Figure 2] 1 is a perspective view of a microwave oven according to an embodiment of the present disclosure with the outer shell and the air guide cover plate removed; [Figure 3] 1 is a perspective view of a microwave oven according to an embodiment of the present disclosure with the outer shell removed; [Figure 4] 1 is a perspective view of a microwave oven according to an embodiment of the present invention with the upper, left, and right outer shells removed. [Figure 5] FIG. 2 is a perspective view of a fan of a microwave oven according to an embodiment of the present application. [Figure 6] 1 is a perspective view of a fan and a hood of a microwave oven according to an embodiment of the present application. FIG. [Figure 7] FIG. 2 is another perspective view of the fan and the air guide hood of the microwave oven according to the embodiment of the present application. [Figure 8] 1 is an exploded view of an air guide member of a microwave oven according to an embodiment of the present application. [Figure 9] 3 is a partial cross-sectional view of an air guide member of a microwave oven according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, the embodiments of the present invention shown in the drawings will be described in detail, and in all the drawings, the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described through the following reference drawings are illustrative and are for explaining the present application, and should not be understood as limitations on the present application.

[0030] In this description, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are based on the orientations or positional relationships shown in the drawings and are intended for ease of and simplification of the description. They do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured, or operate in a particular orientation, and therefore should not be construed as limitations of the present application. Furthermore, the term "first" or "second" may explicitly or implicitly refer to one or more of the features. In this description, unless otherwise specified, "plurality" means two or more than two.

[0031] In the description of this application, unless otherwise clearly defined and limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two elements. Those skilled in the art will be able to understand the specific meanings of these terms in the present application depending on the specific circumstances.

[0032] Hereinafter, a microwave oven 100 according to an embodiment of the present invention will be described with reference to the drawings.

[0033] Specifically, as shown in FIG. 1, a microwave oven 100 according to an embodiment of the present invention includes a housing 1, a fan 2, an inverter 3, and a magnetron 4.

[0034] A cooking chamber is defined within housing 1, which further defines mounting chamber 12, within which electronic components of microwave oven 100 can be mounted. Mounting chamber 12 includes a first mounting chamber 121 at the rear of the cooking chamber, with fan 2, inverter 3, and magnetron 4 located within first mounting chamber 121, allowing for convenient layout of fan 2, inverter 3, and magnetron 4 within microwave oven 100 and resulting in a rational and compact overall structural layout of microwave oven 100. During operation of microwave oven 100, some heat is generated by inverter 3 itself, which is sensitive to ambient temperature and must be kept at a low temperature, while magnetron 4 generates the most heat during operation and has a higher temperature resistance than other components within microwave oven 100.

[0035] In the left-right direction of housing 1, fan 2 and magnetron 4 are respectively located on either side of inverter 3, and the cooling air blown out from fan 2 first passes through inverter 3 and effectively dissipates heat from inverter 3, thereby improving the performance of inverter 3 and maintaining the stability of inverter 3. After passing through inverter 3 and removing heat from inverter 3, the cooling air is then blown onto magnetron 4, thereby dissipating heat from magnetron 4. Depending on the heat generated in the operation of magnetron 4 and inverter 3 and the differences in their own requirements for ambient temperature, the cooling air blown out from fan 2 can achieve an optimal heat dissipation effect for magnetron 4 and inverter 3, and further improve the performance and service life of microwave oven 100 as a whole.

[0036] In microwave oven 100 according to the embodiment of the present application, fan 2, inverter 3, and magnetron 4 are mounted in first mounting chamber 121 at the rear of the cooking chamber, and fan 2 and magnetron 4 are respectively located on both sides of inverter 3 in the left-right direction of housing 1, and the cooling air blown out from fan 2 first passes through inverter 3 and effectively dissipates heat from inverter 3, thereby removing heat from inverter 3, and then is blown onto magnetron 4, thereby achieving heat dissipation to magnetron 4. Depending on the heat generated in the operation of magnetron 4 and inverter 3 and the individual requirements for ambient temperature, the cooling air blown out from fan 2 can optimally achieve heat dissipation effect for magnetron 4 and inverter 3, and further improve the performance and service life of microwave oven 100 as a whole.

[0037] In some embodiments of the present application, there are a plurality of inverters 3 and a plurality of magnetrons 4, and each of the magnetrons 4 corresponds to a respective one of the inverters 3. When microwave oven 100 is operating, different numbers of inverters 3 and magnetrons 4 are called up to adjust the heating temperature and achieve different cooking effects. Furthermore, because each magnetron 4 corresponds to a respective inverter 3, the voltage of each magnetron 4 is regulated by the inverter 3, allowing the magnetrons 4 to operate faster and improving the operating efficiency of microwave oven 100.

[0038] For example, in the example shown in Figures 1 and 2, there are two inverters 3 and two magnetrons 4, and the two magnetrons 4 correspond to the two inverters 3 respectively, thereby realizing a dual microwave generating system for the microwave oven 100.

[0039] 1, 2 and 3, in some embodiments of the present application, the inverters 3 are distributed in the vertical direction of the housing 1, and the magnetrons 4 are distributed in the vertical direction of the housing 1. In this case, since the inverters 3 and the magnetrons 4 are positioned relatively concentrated, it is possible to save space in the horizontal direction of the first mounting chamber 121, and since the inverters 3 and the magnetrons 4 are positioned corresponding to each other in the horizontal direction, it is convenient to connect the inverters 3 and the magnetrons 4.

[0040] In some embodiments of the present application, as shown in Figures 1, 2 and 3, the multiple inverters 3 include a first inverter 31 and a second inverter 32, the multiple magnetrons 4 include a first magnetron 41 and a second magnetron 42, and the first inverter 31 is connected to the first magnetron 41 and the second inverter 32 is connected to the second magnetron 42. At this time, the first inverter 31, the second inverter 32 and the first magnetron 41, the second magnetron 42 are installed in the first installation chamber 121, the first inverter 31 and the second inverter 32 are arranged vertically, and the first magnetron 41 and the second magnetron 42 are arranged vertically, as shown in FIG. 1, the first magnetron 41 is located to the right of the first inverter 31, the second magnetron 42 is located to the right of the second inverter 32, and the fan 2 is located to the left of the first magnetron 41 and the second magnetron 42.

[0041] This improves the volume utilization rate of first mounting chamber 121 and enables different heating modes of microwave oven 100. At the same time, first inverter 31 is connected to first magnetron 41 and second inverter 32 is connected to second magnetron 42, so that the voltage of first magnetron 41 is regulated by first inverter 31 and the voltage of second magnetron 42 is regulated by second inverter 32, allowing first magnetron 41 and second magnetron 42 to operate faster and improving the working efficiency of microwave oven 100.

[0042] Of course, in this application, the positions of the magnetron 4 and the fan 2 are interchangeable, one of the magnetron 4 and the fan 2 being on the left side of the inverter 3 and the other being on the right side of the inverter 3 .

[0043] 1 and 4 , in some embodiments of the present application, mounting chamber 12 further includes second mounting chamber 122 located on the top side of the cooking chamber, first mounting chamber 121 communicates with second mounting chamber 122 and has a microwave port at the top of the cooking chamber, and microwave oven 100 further includes waveguide 6 located within second mounting chamber 122, one end of which is used to collect microwaves emitted from magnetron 4 and the other end of which radiates microwaves into the cooking chamber through the microwave port. Waveguide 6 collects microwaves emitted from magnetron 4 from the communicating portion between first mounting chamber 121 and second mounting chamber 122 and guides the collected microwaves to the microwave port at the top of the cooking chamber, allowing the microwaves to enter the cooking chamber through the microwave port, thereby increasing the utilization rate of microwaves generated by magnetron 4 and improving the operating efficiency of microwave oven 100.

[0044] 3 and 4 , the microwave port is located in the center of the top of the cooking chamber, and waveguide 6 is angled toward one of the left and right sides of housing 1 that is closer to magnetron 4 in the front-to-rear direction of housing 1. A microwave port located in the center of the top of the cooking chamber uniformly distributes microwaves entering the cooking chamber, thereby ensuring uniform heating of food in microwave oven 100. The angled waveguide 6 saves mounting space for waveguide 6 in second mounting chamber 122, leaving more mounting space for other electronic components in second mounting chamber 122 and reducing the increase in volume of second mounting chamber 122 due to the stacking of electronic components, thereby reducing the volume of microwave oven 100. This reduces the space microwave oven 100 takes up during logistics and transportation, improving the transport load of microwave oven 100 and reducing logistics costs.

[0045] In some embodiments of the present application, as shown in FIG. 1 , mounting chamber 12 further includes third mounting chamber 123 and fourth mounting chamber 124, which are located on either side of the cooking chamber in the left-right direction of housing 1, with third mounting chamber 123 and fan 2 located on the same side of housing 1, third mounting chamber 123 communicating with first mounting chamber 121, and an intake port 22 communicating with third mounting chamber 123 being provided on the side wall of housing 1 on the side having third mounting chamber 123, with the intake side of fan 2 facing the front. Providing third mounting chamber 123 and fourth mounting chamber 124 on either side of housing 1 helps to keep the cooking chamber warm and improves the heating efficiency of microwave oven 100. At the same time, third mounting chamber 123 and fourth mounting chamber 124 can provide soundproofing for the heating process within the cooking chamber, thereby reducing the noise generated during operation of microwave oven 100. In addition, the fan 2 can draw in air through the air intake 22 connected to the third mounting chamber 123, and the external cooling air enters the third mounting chamber 123 through the air intake 22, and then enters the first mounting chamber 121 where the fan 2 is located due to the suction force of the fan 2, and then enters the fan 2 again, transmitting the external cooling air to the inverter 3 and magnetron 4, thereby realizing heat dissipation to the inverter 3 and magnetron 4.

[0046] Of course, the present application is not limited to this, and the intake side of the fan 2 faces the rear side of the housing 1, and the rear wall of the housing 1 has an intake port 22 that communicates with the first mounting chamber 121. In this case, the fan 2 can take in air through the intake port 22 on the rear wall of the housing 1, and the external cooling air enters the first mounting chamber 121 from the intake port 22 and enters the fan 2 through the suction force of the fan 2, and the external cooling air is transmitted to the inverter 3 and the magnetron 4, thereby realizing heat dissipation to the inverter 3 and the magnetron 4.

[0047] In some embodiments of the present application, housing 1 comprises an inner shell and an outer shell 11, outer shell 11 is disposed outside the inner shell, a cooking chamber is defined inside the inner shell, and mounting chamber 12 is defined between outer shell 11 and the inner shell. The inner shell makes the structure of the cooking chamber more stable, and each electrical element of microwave oven 100 can be mounted in mounting chamber 12 defined between outer shell 11 and the inner shell. Outer shell 11 protects the electrical elements and prevents damage from the external environment, and the inner shell isolates the electrical elements from the cooking chamber, preventing water vapor in the cooking chamber from flowing to the electrical elements and causing a short circuit.

[0048] As shown in FIG. 4 , rear shell 11 is further provided with heat dissipation holes 111, which face magnetron 4, so that the airflow dissipates heat sequentially from inverter 3 and magnetron 4 before being discharged through heat dissipation holes 111, thereby realizing circulation of the airflow and external air, thereby better realizing heat dissipation from microwave oven 100.

[0049] In some embodiments of the present application, as shown in Fig. 3, microwave oven 100 further includes air guide member 5, which is provided in first mounting chamber 121 and between fan 2 and magnetron 4, with heat dissipation air passage 53 defined within air guide member 5, and inverter 3 located within heat dissipation air passage 53, which is used to guide the air blown from fan 2 to inverter 3 and magnetron 4. By providing air guide member 5, the air blown from fan 2 can be concentrated within heat dissipation air passage 53, improving the efficiency of use of the cooling air blown from fan 2 and increasing the heat dissipation efficiency of microwave oven 100.

[0050] In some embodiments of the present application, as shown in FIG. 7 , the heat dissipation air duct 53 has a heat dissipation inlet 531 facing the fan 2 and a heat dissipation outlet 532 facing the magnetron 4, and the airflow blown out from the fan 2 enters the heat dissipation air duct 53 from the heat dissipation inlet 531, flows along the heat dissipation air duct 53 through the inverter 3, absorbs heat from the inverter 3, and then blows onto the magnetron 4 from the heat dissipation outlet 532, thereby realizing heat dissipation from the magnetron 4.

[0051] 7, a first groove 533 is formed on the wall of heat dissipation air duct 53 close to the cooking chamber, extending in the direction in which fan 2 and inverter 3 are distributed and on one side of inverter 3, with heat dissipation inlet 531 and heat dissipation outlet 532 communicating with first groove 533. Air flows from heat dissipation inlet 531 into first groove 533 to remove heat from inverter 3, and then blows onto magnetron 4 through heat dissipation outlet 532, thereby dissipating heat from magnetron 4. By providing the first groove 533, the cross-sectional area of ​​the heat dissipation airflow duct 53 perpendicular to the direction in which the fan 2 and the inverter 3 are distributed is large, a large amount of airflow is blown onto the inverter 3, and the processing of the first groove 533 is convenient. At the same time, the height of the side wall of the first groove 533 facing the inverter 3 is low, which makes it easy for the cool air in the first groove 533 to flow to the inverter 3, which improves the heat dissipation effect of the inverter 3, meets the working environment temperature requirements of the inverter 3, and the heat generation amount of the inverter 3 is small. After the cool air exchanges heat with the inverter 3, it continues to flow in the heat dissipation airflow duct 53, flows out through the heat dissipation outlet 532, and flows to the magnetron 4, thereby providing a certain amount of heat dissipation for the magnetron 4 which generates a large amount of heat.

[0052] 2 and 5, microwave oven 100 further includes fan case 21, which is disposed in mounting chamber 12 and connected to air guide member 5. Fan case 21 has a fan chamber and air inlet 22 and air outlet 23 communicating with the fan chamber. Fan 2 is disposed in the fan chamber and is driven to direct airflow from air inlet 22 to air outlet 23, and heat dissipation inlet 531 communicates with air outlet 23. In this case, the airflow entering fan 2 is concentrated and guided by the fan chamber to air outlet 23, and more air is blown out from air outlet 23. As a result, more air is blown into heat dissipation airflow duct 53, which allows inverter 3 and magnetron 4 to dissipate heat better and has a good heat dissipation effect.

[0053] In some embodiments of the present application, as shown in Fig. 6, cooking air duct 54 is defined in air guide member 5, which is further in communication with exhaust port 23, and cooking air duct 54 is in communication with the cooking chamber. The airflow entering cooking air duct 54 can radiate heat to the cooking chamber, reducing the risk of damage to microwave oven 100 due to overheating of the cooking chamber.

[0054] In some embodiments of the present application, as shown in FIG. 6, cooking air passage 54 has second groove 541, which is formed on the side of air guide member 5 facing the cooking chamber, one end of second groove 541 communicating with exhaust port 23, and the opening of second groove 541 communicating with the cooking chamber. At this time, the airflow flows from exhaust port 23 of fan case 21 into second groove 541 and then flows from the opening of second groove 541 into the cooking chamber, thereby dissipating heat from the cooking chamber and reducing the risk of microwave oven 100 being damaged due to overheating of the cooking chamber. By providing second groove 541, the airflow that enters second groove 541 flows along second groove 541 and at the same time blows out from the opening of second groove 541, so that the airflow blown out from second groove 541 is distributed evenly in the left and right directions, and second groove 541 reduces the difficulty of processing air guide member 5.

[0055] 6 , a third groove 542 is provided on the side of fan case 21 facing the cooking chamber, one end of third groove 542 communicating with exhaust port 23 and the other end communicating with second groove 541, which in turn communicates with exhaust port 23 via third groove 542, and the opening of third groove 542 communicating with the cooking chamber. In this case, air flows from exhaust port 23 of fan case 21 to third groove 542, with a portion flowing from the opening of third groove 542 into the cooking chamber and the other portion flowing into second groove 541 and then through second groove 541 into the cooking chamber, thereby dissipating heat from the cooking chamber and reducing the risk of damage to microwave oven 100 due to overheating of the cooking chamber. Furthermore, third groove 542 also reduces the difficulty of processing fan case 21.

[0056] In some embodiments of the present application, as shown in FIG. 6 , there are two cooking air ducts 54, each located on either side of the inverter 3 along a direction perpendicular to the fan 2 and the direction of distribution of the inverter 3, there are two heat dissipation inlets 531, each located on either side of the inverter 3 along a direction perpendicular to the fan 2 and the direction of distribution of the inverter 3, there are two corresponding first grooves 533, there are two corresponding heat dissipation outlets 532, and the inverter 3 is located between the two first grooves 533. At this time, cooking air duct 54 can blow cooling air into the cooking chamber on both sides in the direction perpendicular to the distribution direction of fan 2 and inverter 3, and can dissipate heat from the cooking chamber in both directions, up and down, achieving a better heat dissipation effect. Heat dissipation air duct 53 takes in air from heat dissipation inlets 531 on both sides in the direction perpendicular to the distribution direction of fan 2 and inverter 3, and dissipates heat from inverter 3 and magnetron 4 sequentially in both directions, up and down, so that inverter 3 and magnetron 4 can dissipate heat more uniformly.

[0057] In some embodiments of the present application, as shown in FIG. 5, exhaust port 23 includes first exhaust port 231, second exhaust port 232, third exhaust port 233, and fourth exhaust port 234, of which cooking air duct 54 and heat dissipation inlet 531 on one side (the upper side as shown in FIG. 5) are both connected to first exhaust port 231, and a communicating air duct is further defined between air guide member 5 and fan case 21, and the communicating air duct is connected to second exhaust port 232, third exhaust port 233, and heat dissipation inlet 531 on the other side (the lower side as shown in FIG. 5), and fourth exhaust port 234 is connected to cooking air duct 54 on the other side (the lower side as shown in FIG. 5). In this case, the first exhaust port 231 is large and can communicate with the cooking air duct 54 and heat dissipation inlet 531 on one side, respectively, allowing air to be drawn into the cooking air duct 54 and heat dissipation air duct 53 on one side, and dissipating heat to the cooking chamber, inverter 3, and magnetron 4. The air blown out from the second exhaust port 232 and the third exhaust port 233 is concentrated in the connecting air duct and blows together into the heat dissipation inlet 531 on the other side, thereby flowing into the heat dissipation air duct 53 on the other side and dissipating heat to the inverter 3 and magnetron 4. The air blown out from the fourth exhaust port 234 first enters the third groove 542 on the fan case 21 and blows into the cooking chamber, then blows along the third groove 542 into the second groove 541 on the air guide member 5, and then blows from the second groove 541 into the cooking chamber, thereby dissipating heat to the cooking chamber.

[0058] 5, first exhaust port 231, second exhaust port 232, and third exhaust port 233 are located on the side of fan case 21 facing air guide member 5 and are sequentially distributed in a direction perpendicular to the distribution direction of fan 2 and inverter 3, and fourth exhaust port 234 is provided on the side of fan case 21 facing the cooking chamber. In this case, first exhaust port 231 is large and located at the top of fan case 21, and can communicate with cooking air duct 54 and heat dissipation inlet 531 located above, respectively, to achieve air intake for cooking air duct 54 and heat dissipation air duct 53 located above, and to achieve heat dissipation to the cooking chamber and the upper ends of inverter 3 and magnetron 4. Air blown out from second exhaust port 232 and third exhaust port 233 is concentrated in the communicating air duct and blows together to heat dissipation inlet 531 located below. This causes the air to flow into the heat dissipation air duct 53 located below, realizing heat dissipation at the lower end to the inverter 3 and the magnetron 4, and as the fourth exhaust port 234 is directed toward the cooking chamber, the blown air first enters the third groove 542 on the fan case 21 and is blown into the cooking chamber, and at the same time blows along the third groove 542 into the second groove 541 on the air guide member 5, and then blows from the second groove 541 into the cooking chamber, realizing heat dissipation into the cooking chamber.

[0059] 5, an air outlet passage 55 is further defined in the air guide member 5, one end of which is connected to the exhaust port 23 (e.g., the first exhaust port 231), and the air outlet passage 55 has a fifth exhaust port 551 on one side (the lower side as shown in FIG. 5) in a direction perpendicular to the distribution direction of the inverter 3 and the magnetron 4. In this case, air is blown out from the fifth exhaust port 551 and flows to the upper part of the air guide member 5, dissipating heat from the electric elements attached in this position, thereby realizing stable operation of the other electric elements.

[0060] 8 and 9, the air guide member 5 includes an air guide hood 51 and an air guide cover plate 52, the air guide cover plate 52 is connected to the air guide hood 51 and together defines a heat dissipation air passage 53, the air guide cover plate 52 is on one side of the air guide hood 51 facing away from the cooking chamber, a heat dissipation inlet 531 is provided on the air guide hood 51, and the air guide hood 51 and the air guide cover plate 52 together define a heat dissipation outlet 532. In this case, the air guide cover plate 52 can cover the inverter 3, so that the inverter 3 is located within the heat dissipation air passage 53 to achieve a better heat dissipation effect, and the air guide cover plate 52 can be detached from the air guide hood 51. When inspecting the inverter 3, the air guide cover plate 52 can be removed to ensure that the inverter 3 is detectable, and the air guide cover plate 52 can further protect the inverter 3 and reduce to a certain extent the risk of the inverter 3 being damaged from the outside.

[0061] In some embodiments of the present application, there are multiple inverters 3, and a partition plate is provided in the heat dissipation air duct 53, with a partition plate provided between each pair of adjacent inverters 3. This separates the two inverters 3, preventing them from affecting each other during operation, and reducing the risk of a malfunction in one inverter 3 affecting the other inverters 3.

[0062] Hereinafter, a microwave oven 100 according to one embodiment of the present application will be described with reference to the accompanying drawings. Note that the following description is merely an example and is used to interpret the present application, but should not be understood as a limitation on the present application.

[0063] Specifically, as shown in FIG. 1, microwave oven 100 includes housing 1, fan 2, inverter 3, magnetron 4, air guide member 5, and waveguide 6.

[0064] A cooking chamber is provided within housing 1, which further defines mounting chamber 12, and the electrical elements of microwave oven 100 can be mounted within mounting chamber 12. Fan 2, inverter 3, and magnetron 4 are provided within mounting chamber 12, which facilitates the layout of fan 2, inverter 3, and magnetron 4 within microwave oven 100 and makes the layout of the overall structure of microwave oven 100 rational and compact. During operation of microwave oven 100, some heat is generated by inverter 3 itself, which is sensitive to environmental temperature and must be kept low, while magnetron 4 generates the most heat during operation and has a higher temperature resistance than other parts within microwave oven 100.

[0065] There are two inverters 3 and two magnetrons 4, each corresponding to one inverter 3, to realize a dual microwave generating system in microwave oven 100. First inverter 31 is connected to first magnetron 41, and second inverter 32 is connected to second magnetron 42. First inverter 31 and second inverter 32 are vertically distributed. First magnetron 41 and second magnetron 42 are vertically distributed. As shown in FIG. 1, first magnetron 41 is located to the right of first inverter 31, and second magnetron 42 is located to the right of second inverter 32. Fan 2 is located to the left of first magnetron 41 and second magnetron 42. The fan 2 and the magnetron 4 are located on opposite sides of the inverter 3, respectively. At this time, the airflow blown out from the fan 2 first passes through the inverter 3, effectively dissipating heat from the inverter 3, and then blows onto the magnetron 4, thereby realizing heat dissipation from the magnetron 4.

[0066] As shown in Figures 6 and 7, the air guide member 5 is provided in the mounting chamber 12, and is located between the fan 2 and the magnetron 4. A heat dissipation air duct 53 is defined within the air guide member 5. The inverter 3 is located within the heat dissipation air duct 53. The heat dissipation air duct 53 has a heat dissipation inlet 531 facing the fan 2 and a heat dissipation outlet 532 facing the magnetron 4. The airflow blown out from the fan 2 enters the heat dissipation air duct 53 from the heat dissipation inlet 531, flows through the inverter 3 along the heat dissipation air duct 53, removes heat from the inverter 3, and then blows onto the magnetron 4 from the heat dissipation outlet 532, thereby realizing heat dissipation from the magnetron 4.

[0067] The wall of heat dissipation air duct 53 close to the cooking chamber has a first groove 533, which extends in the direction of distribution of fan 2 and inverter 3 and is located on one side of inverter 3, with heat dissipation inlet 531 and heat dissipation outlet 532 communicating with first groove 533. In this case, air flows from heat dissipation inlet 531 into first groove 533 to absorb heat from inverter 3, and then blows through heat dissipation outlet 532 onto magnetron 4, thereby realizing heat dissipation from magnetron 4. By providing the first groove 533, the cross-sectional area of ​​the heat dissipation airflow duct 53 perpendicular to the direction in which the fan 2 and the inverter 3 are distributed is large, a large amount of airflow is blown onto the inverter 3, and the processing of the first groove 533 is convenient. At the same time, the height of the side wall of the first groove 533 facing the inverter 3 is low, which makes it easy for the cool air in the first groove 533 to flow to the inverter 3, which improves the heat dissipation effect of the inverter 3, meets the working environment temperature requirements of the inverter 3, and the heat generation amount of the inverter 3 is small. After the cool air exchanges heat with the inverter 3, it continues to flow in the heat dissipation airflow duct 53, flows out through the heat dissipation outlet 532, and flows to the magnetron 4, thereby providing a certain amount of heat dissipation for the magnetron 4 which generates a large amount of heat.

[0068] As shown in Fig. 7, there are multiple inverters 3, and a partition plate is provided in the heat dissipation air duct 53, with a partition plate provided between each pair of adjacent inverters 3. This separates the two inverters 3, preventing them from affecting each other during operation, and reducing the risk of a malfunction in one inverter 3 affecting the other inverters 3.

[0069] 6, air guide member 5 further defines cooking air passage 54 which communicates with exhaust port 23, and cooking air passage 54 communicates with the cooking chamber. The airflow entering cooking air passage 54 can dissipate heat from the cooking chamber, reducing the risk of microwave oven 100 being damaged due to overheating in the cooking chamber. Cooking air passage 54 includes second groove 541 which is formed on the side of air guide member 5 facing the cooking chamber, with one end of second groove 541 communicating with exhaust port 23 and an opening of second groove 541 communicating with the cooking chamber, and third groove 542 is formed on the side of fan case 21 facing the cooking chamber, with one end of third groove 542 communicating with exhaust port 23 and the other end communicating with second groove 541 and an opening of third groove 542 communicating with the cooking chamber. At this time, the airflow flows from exhaust port 23 of fan case 21 into second groove 541 and third groove 542, a portion of the air flows through the opening of third groove 542 into the cooking chamber, and another portion flows into second groove 541 and then flows into the cooking chamber via second groove 541, thereby dissipating heat from the cooking chamber and reducing the risk of damage to microwave oven 100 due to overheating of the cooking chamber. Furthermore, third groove 542 can reduce the difficulty of processing fan case 21.

[0070] 6, there are two cooking air ducts 54, each located on either side of inverter 3 in a direction perpendicular to the direction in which fan 2 and inverter 3 are distributed; there are two heat dissipation inlets 531, each located on either side of inverter 3 in a direction perpendicular to the direction in which fan 2 and inverter 3 are distributed; there are two corresponding first grooves 533 and two corresponding heat dissipation outlets 532, and inverter 3 is located between the two first grooves 533. In this case, cooking air duct 54 can blow cooling air into the cooking chamber on both sides of the direction perpendicular to the direction in which fan 2 and inverter 3 are distributed, and can dissipate heat from the cooking chamber in both upper and lower directions, achieving a better heat dissipation effect; and heat dissipation air duct 53 takes in air from heat dissipation inlets 531 on both sides of the direction perpendicular to the direction in which fan 2 and inverter 3 are distributed, and dissipates heat from inverter 3 and magnetron 4 sequentially in both upper and lower directions, thereby achieving more uniform heat dissipation from inverter 3 and magnetron 4.

[0071] As shown in Fig. 5, airflow guide member 5 is further defined with airflow passage 55, one end of which is connected to first exhaust port 231, and airflow passage 55 has fifth exhaust port 551 on the lower side as shown in Fig. 5. At this time, airflow is blown out from fifth exhaust port 551 and flows to the upper part of airflow guide member 5, dissipating heat from electric elements attached in this location, thereby realizing stable operation of other electric elements.

[0072] 8 and 9, the air guide member 5 comprises an air guide hood 51 and an air guide cover plate 52, the air guide cover plate 52 is connected to the air guide hood 51 and together defines a heat dissipation air passage 53, the air guide cover plate 52 is on one side of the air guide hood 51 facing away from the cooking chamber, a heat dissipation inlet 531 is provided on the air guide hood 51, and the air guide hood 51 and the air guide cover plate 52 together define a heat dissipation outlet 532. In this case, the air guide cover plate 52 can cover the inverter 3, so that the inverter 3 is positioned within the heat dissipation air passage 53 to achieve a better heat dissipation effect, and the air guide cover plate 52 can be detached from the air guide hood 51. When inspecting the inverter 3, the air guide cover plate 52 can be removed so that the inverter 3 is in an inspectable state, and the air guide cover plate 52 can further protect the inverter 3 and reduce to a certain extent the risk of the inverter 3 being damaged from the outside.

[0073] 5, fan case 21 is installed in mounting chamber 12 and connected to air guide member 5, fan case 21 has a fan chamber and air inlet 22 and air outlet 23 connected to the fan chamber, fan 2 is installed in the fan chamber and is driven to direct airflow from air inlet 22 to air outlet 23, and heat dissipation inlet 531 is connected to air outlet 23. In this case, the airflow entering fan 2 is concentrated and guided by the fan chamber to air outlet 23, and more air is blown out from air outlet 23, so more air blows into heat dissipation airflow duct 53, which can better dissipate heat from inverter 3 and magnetron 4, resulting in a good heat dissipation effect.

[0074] As shown in Fig. 5, exhaust port 23 includes first exhaust port 231, second exhaust port 232, third exhaust port 233, and fourth exhaust port 234. Upper cooking air duct 54 and heat dissipation inlet 531 as shown in Fig. 5 are both connected to first exhaust port 231. A communication air duct is further defined between air guide member 5 and fan case 21. This communication air duct is connected to second exhaust port 232, third exhaust port 233, and lower heat dissipation inlet 531 as shown in Fig. 5. Fourth exhaust port 234 is connected to lower cooking air duct 54 as shown in Fig. 5. First exhaust port 231, second exhaust port 232, and third exhaust port 233 are located on the side of fan case 21 facing air guide member 5 and are distributed sequentially in a direction perpendicular to the distribution direction of fan 2 and inverter 3, and fourth exhaust port 234 is provided on the side of fan case 21 facing the cooking chamber. In this case, the first exhaust port 231 is large and can communicate with the cooking air duct 54 and heat dissipation inlet 531 on one side, respectively, allowing air to be drawn into the cooking air duct 54 and heat dissipation air duct 53 on one side, and dissipating heat to the cooking chamber, inverter 3, and magnetron 4. The air blown out from the second exhaust port 232 and the third exhaust port 233 is concentrated in the connecting air duct and blows together into the heat dissipation inlet 531 on the other side, thereby flowing into the heat dissipation air duct 53 on the other side and dissipating heat to the inverter 3 and magnetron 4 on the other side. The air blown out from the fourth exhaust port 234 first enters the third groove 542 on the fan case 21 and blows into the cooking chamber, then blows along the third groove 542 into the second groove 541 on the air guide member 5, and then blows from the second groove 541 into the cooking chamber, thereby dissipating heat to the cooking chamber.

[0075] As shown in FIG. 1 , mounting chamber 12 has a first mounting chamber 121 located at the rear of the cooking chamber, and fan 2, inverter 3, magnetron 4, and air guide member 5 are all located within first mounting chamber 121, which facilitates the layout of fan 2, inverter 3, and magnetron 4 within microwave oven 100 and makes the layout of the overall structure of microwave oven 100 rational and compact, with fan 2 and magnetron 4 located on either side of inverter 3 in the left-right direction of housing 1. In this case, the cooling air blown out from fan 2 first passes through inverter 3 and effectively dissipates heat from inverter 3, thereby improving the performance and maintaining the stability of inverter 3. The cooling air passes through inverter 3 and removes heat from it before being blown onto magnetron 4, thereby achieving heat dissipation from magnetron 4. Depending on the heat generated during the operation of magnetron 4 and inverter 3 and the differences in their own requirements for ambient temperature, the cooling air blown out from fan 2 can achieve an optimal heat dissipation effect for magnetron 4 and inverter 3, and further improve the overall performance and service life of microwave oven 100.

[0076] As shown in FIG. 1 , mounting chamber 12 further includes second mounting chamber 122 on the top side of the cooking chamber, first mounting chamber 121 communicates with second mounting chamber 122 and has a microwave port at the top of the cooking chamber, and microwave oven 100 further includes waveguide 6 disposed within second mounting chamber 122, one end of which is used to collect microwaves emitted from magnetron 4 and the other end of which radiates microwaves into the cooking chamber through the microwave port. Waveguide 6 collects microwaves emitted from magnetron 4 from the communicating portion between first mounting chamber 121 and second mounting chamber 122 and guides the collected microwaves to the microwave port at the top of the cooking chamber, so that the microwaves enter the cooking chamber through the microwave port, thereby increasing the utilization rate of microwaves generated by magnetron 4 and improving the operating efficiency of microwave oven 100.

[0077] The microwave port is located in the center of the top of the cooking chamber, and waveguide 6 is inclined in the front-to-rear direction of housing 1 toward one of the left and right sides of housing 1 that is closer to magnetron 4. The microwave port located in the center of the top of the cooking chamber uniformly distributes the microwaves entering the cooking chamber, resulting in uniform heating of food by microwave oven 100. The inclined waveguide 6 saves mounting space for waveguide 6 in second mounting chamber 122, leaving sufficient mounting space for other electronic components in second mounting chamber 122 and reducing the increase in volume of second mounting chamber 122 due to the stacking of electronic components, thereby reducing the volume of microwave oven 100, which reduces the space microwave oven 100 takes up during logistics and transportation, improving the transport load of microwave oven 100 and reducing logistics costs.

[0078] As shown in FIG. 1 , mounting chamber 12 further includes third mounting chamber 123 and fourth mounting chamber 124, which are located on either side of the cooking chamber in the left-right direction of housing 1, third mounting chamber 123 and fourth mounting chamber 124, respectively, third mounting chamber 123 and fan 2 are located on the same side of housing 1, third mounting chamber 123 is connected to first mounting chamber 121, and the side wall of housing 1 on the side having third mounting chamber 123 has air intake 22 which is connected to third mounting chamber 123. By providing third mounting chamber 123 and fourth mounting chamber 124 on either side of housing 1, the cooking chamber can be kept warm, improving the heating efficiency of microwave oven 100. At the same time, third mounting chamber 123 and fourth mounting chamber 124 can soundproof the heating process in the cooking chamber, reducing the noise generated during the operation of microwave oven 100.

[0079] 5, the intake side of the fan 2 faces the rear side of the housing 1, and the rear wall of the housing 1 has an intake port 22 that communicates with the first mounting chamber 121. In this case, the fan 2 can take in air through the intake port 22 on the rear wall of the housing 1, and the external cooling air enters the first mounting chamber 121 from the intake port 22 and enters the fan 2 through the suction force of the fan 2, and the external cooling air is transmitted to the inverter 3 and the magnetron 4, thereby realizing heat dissipation to the inverter 3 and the magnetron 4.

[0080] Housing 1 comprises an inner shell and an outer shell 11, outer shell 11 being disposed outside the inner shell and defining a cooking chamber inside the inner shell, with mounting chamber 12 defined between outer shell 11 and the inner shell. The inner shell makes the cooking chamber structure more stable, and the electrical elements of microwave oven 100 can be mounted in mounting chamber 12 defined between outer shell 11 and the inner shell. Outer shell 11 protects the electrical elements and prevents damage from the external environment, while the inner shell isolates the electrical elements from the cooking chamber, preventing water vapor in the cooking chamber from flowing to the electrical elements and causing a short circuit.

[0081] As shown in FIG. 4 , rear shell 11 is further provided with heat dissipation holes 111, which face magnetron 4, so that the airflow dissipates heat sequentially from inverter 3 and magnetron 4 before being discharged through heat dissipation holes 111, thereby realizing circulation of the airflow and external air, thereby better realizing heat dissipation from microwave oven 100.

[0082] All other aspects of the construction and operation of microwave oven 100 according to the present embodiment are known to those skilled in the art and will not be described again here.

[0083] In the description herein, references to terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" mean that a particular feature, structure, material, or characteristic described with reference to that embodiment or example is included in at least one embodiment or example of the present application. References herein to general terms do not necessarily refer to the same embodiment or example. In addition, a particular feature, structure, material, or characteristic described may be incorporated in any suitable manner in any one or more embodiments or examples.

[0084] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is limited by the claims and their equivalents.

[0085] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application is based on and claims priority from Chinese patent applications bearing patent application numbers 202310107608.3 and 202310107624.2 and filed on February 9, 2023, the entire contents of which are incorporated herein by reference. [Explanation of symbols]

[0086] 100, microwave, 1, housing, 11, outer shell, 111, heat dissipation hole, 12, mounting chamber, 121, first mounting chamber, 122, second mounting chamber, 123, third mounting chamber, 124, fourth mounting chamber, 2, fan, 21, fan case, 22, intake port, 23, exhaust port, 231, first exhaust port, 232, second exhaust port, 233, third exhaust port, 234, fourth exhaust port, 3, inverter, 31, first inverter, 32, second inverter, 4, magnetron, 41, first magnetron, 42, second magnetron, 5, air guide member, 51, air guide hood, 52, air guide cover plate, 53, heat dissipation air duct, 531, heat dissipation inlet, 532, heat dissipation outlet, 533, first groove, 54, cooking air duct, 541, second groove, 542, third groove, 55, blow-out air duct, 551, fifth exhaust port, 6, waveguide.

Claims

1. A microwave oven, a housing having a cooking chamber therein and further having mounting chambers, the mounting chambers including a first mounting chamber located on the rear side of the cooking chamber; a fan provided in the first mounting chamber; an inverter provided in the first mounting chamber; The microwave oven is provided in the first mounting chamber and includes the fan and magnetrons on both sides of the inverter in the left-right direction of the housing.

2. 2. The microwave oven according to claim 1, wherein the inverters are plural, the magnetrons are plural, and the magnetrons correspond to the inverters respectively.

3. 3. The microwave oven according to claim 2, wherein the plurality of inverters are distributed in the vertical direction of the housing, and the plurality of magnetrons are distributed in the vertical direction of the housing.

4. 3. The microwave oven of claim 2, wherein the plurality of inverters includes a first inverter and a second inverter, the plurality of magnetrons includes a first magnetron and a second magnetron, the first inverter is connected to the first magnetron, and the second inverter is connected to the second magnetron.

5. 2. The microwave oven according to claim 1, further comprising an air guide member disposed within the first mounting chamber and between the fan and the magnetron, a heat dissipation air passage defined within the air guide member, the inverter being positioned within the heat dissipation air passage, the heat dissipation air passage having a heat dissipation inlet facing the fan and a heat dissipation outlet facing the magnetron, and the heat dissipation air passage being used to guide air blown out from the fan to the inverter and the magnetron.

6. 6. The microwave oven according to claim 5, wherein a first groove is formed in a wall surface of the heat dissipation air duct close to the cooking chamber, the first groove extending in the direction in which the fan and the inverter are distributed and on one side of the inverter, the heat dissipation inlet and the heat dissipation outlet communicating with the first groove.

7. 6. The microwave oven according to claim 5, further comprising a fan case, the fan case being disposed within the mounting chamber and connected to the air guide member, the fan case having a fan chamber and an air intake port and an air exhaust port communicating with the fan chamber, the fan being disposed within the fan chamber and being driven to direct airflow from the air intake port to the air exhaust port, and the heat dissipation inlet being communicated with the air exhaust port.

8. 8. The microwave oven according to claim 7, wherein the air guide member further defines a cooking air passage communicating with the exhaust port, the cooking air passage communicating with the cooking chamber.

9. 9. The microwave oven according to claim 8, wherein the cooking air passage includes a second groove formed on a side of the air guide member facing the cooking chamber, one end of the second groove communicating with the exhaust port, and an opening of the second groove communicating with the cooking chamber.

10. 10. The microwave oven of claim 9, wherein a third groove is provided on a side of the fan case facing the cooking chamber, one end of the third groove communicates with the exhaust port, the other end of the third groove communicates with the second groove, and an opening of the third groove communicates with the cooking chamber.

11. 9. The microwave oven of claim 8, wherein the number of cooking air ducts is two and each is located on either side of the direction perpendicular to the direction of the fan and the inverter, and the number of heat dissipation inlets is two and each is located on either side of the direction perpendicular to the direction of the fan and the inverter.

12. 12. The microwave oven of claim 11, wherein the exhaust ports include a first exhaust port, a second exhaust port, a third exhaust port, and a fourth exhaust port, the cooking air duct and the heat dissipation inlet on one side all communicate with the first exhaust port, a communication air duct is further defined between the air guide member and the fan case, the communication air duct communicates with the second exhaust port, the third exhaust port, and the heat dissipation inlet on the other side, and the fourth exhaust port communicates with the cooking air duct on the other side.

13. 13. The microwave oven of claim 12, wherein the first exhaust port, the second exhaust port, and the third exhaust port are located on a side of the fan case facing the air guide member and are distributed sequentially in a direction perpendicular to a distribution direction of the fan and the inverter, and the fourth exhaust port is located on a side of the fan case facing the cooking chamber.

14. 8. The microwave oven according to claim 7, wherein the air guide member further defines an air outlet path, one end of the air outlet path communicates with the exhaust port, and the air outlet path has a fifth exhaust port located on one side in a direction perpendicular to the direction in which the inverter and the magnetron are distributed.

15. The air guide member is A wind guide hood; 6. The microwave oven according to claim 5, further comprising: a baffle cover plate connected to the baffle hood and defining the heat dissipation air passage together with the baffle hood, the baffle cover plate being located on one side of the baffle hood away from the cooking chamber, the heat dissipation inlet being provided in the baffle hood, and defining the heat dissipation air passage together with the baffle hood.

16. 6. The microwave oven according to claim 5, wherein the inverters are plural, a partition plate is provided in the heat dissipation air passage, and the partition plate is provided between every two adjacent inverters.

17. The mounting chamber further comprises a second mounting chamber on the top side of the cooking chamber, the first mounting chamber being in communication with the second mounting chamber and having a microwave port at the top of the cooking chamber, and the microwave oven comprises:

2. The microwave oven of claim 1, further comprising a waveguide disposed within the second mounting chamber, one end of the waveguide being used to collect microwaves emitted from the magnetron and the other end of the waveguide being used to radiate microwaves into the cooking chamber through the microwave port.

18. 18. The microwave oven of claim 17, wherein the microwave port is located at a central portion of the top of the cooking chamber, and the waveguide is inclined toward one side closer to the magnetron on both the left and right sides of the housing in a front-to-rear direction of the housing.

19. 2. The microwave oven according to claim 1, wherein the mounting chamber further includes a third mounting chamber and a fourth mounting chamber, the third mounting chamber and the fourth mounting chamber being located on both sides of the cooking chamber in the left-right direction of the housing, the third mounting chamber and the fan being located on the same side of the housing, the third mounting chamber being connected to the first mounting chamber, and an intake port connected to the third mounting chamber being provided on the side wall of the housing on the side having the third mounting chamber.

20. 2. The microwave oven according to claim 1, wherein an intake side of said fan faces the rear side of said housing, and said rear wall of said housing has an intake port communicating with said first mounting chamber.

21. 2. The microwave oven according to claim 1, wherein the housing comprises an inner shell and an outer shell, the outer shell being disposed outside the inner shell, the cooking chamber being defined inside the inner shell, and the mounting chamber being defined between the outer shell and the inner shell.

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