Microwave cooking electric appliance

Abstract

The invention discloses a microwave cooking electric appliance, and the electric appliance comprises a cavity which is provided with a first side part in a first direction; the radio frequency module is arranged on the first side part; the wind scooper is arranged at the first side part, the wind scooper is provided with a first flow guide air duct and a second flow guide air duct which are arranged at an interval along the first direction, and the radio frequency module is arranged in the first flow guide air duct; the power supply module is electrically connected with the radio frequency module, and the power supply module is arranged in the second flow guide air duct; the fan assembly is arranged on the first side portion, the radio frequency module and the fan assembly are arranged in the second direction, and the fan assembly is configured to enable airflow in the first flow guide air channel and the second flow guide air channel to flow from one side of the cavity to the other side of the cavity in an accelerated mode in the second direction. According to the microwave cooking electric appliance, the radio frequency module is arranged in the first flow guide air duct, the power module is arranged in the second flow guide air duct, the fan assembly can cool the radio frequency module and the power module, and it is guaranteed that the radio frequency module is in a normal temperature range when working.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to a microwave cooking appliance. Background Art

[0002] Microwave cooking appliances, such as microwave ovens, microwave grill ovens or microwave steam grill ovens, have a radio frequency module and an antenna assembly. The radio frequency module is connected to the antenna assembly, and the antenna assembly can feed the microwave generated by the radio frequency module into the cavity. When the radio frequency module works, the heat generated by the radio frequency module is relatively large. If the working temperature of the radio frequency module is too high, it will affect the normal operation of the radio frequency module. Summary of the Invention

[0003] Embodiments of the present invention provide a microwave cooking appliance to solve at least one of the above-mentioned technical problems.

[0004] A microwave cooking appliance according to an embodiment of the present invention includes:

[0005] A cavity having a first side portion along a first direction;

[0006] A radio frequency module provided on the first side portion;

[0007] An air guide cover provided on the first side portion. The air guide cover is provided with a first air guide channel and a second air guide channel arranged at intervals along the first direction, and the radio frequency module is provided in the first air guide channel;

[0008] A power supply module electrically connected to the radio frequency module and provided in the second air guide channel;

[0009] A fan assembly provided on the first side portion. The radio frequency module and the fan assembly are arranged along a second direction, and the fan assembly is configured to accelerate the airflow in the first air guide channel and the second air guide channel to flow from one side of the cavity to the other side along the second direction.

[0010] In the above microwave cooking appliance, the air guide cover is provided with a first air guide channel and a second air guide channel arranged at intervals along the first direction. The radio frequency module is provided in the first air guide channel, and the power supply module is provided in the second air guide channel. The fan assembly can cool the radio frequency module and the power supply module, ensuring that the radio frequency module operates within a normal temperature range.

[0011] In some embodiments, the first air guide channel has a first air inlet, the second air guide channel has a second air inlet, and the area of the first air inlet is larger than the area of the second air inlet.

[0012] In some embodiments, the fan assembly has a first air inlet and a second air inlet arranged along the first direction. The first air inlet communicates with the first diversion air duct, and the second air inlet communicates with the second diversion air duct.

[0013] In some embodiments, the fan assembly includes a volute and a fan. The fan is connected to the volute. The first air inlet and the second air inlet are respectively provided on two side surfaces of the volute along the first direction. The side surface of the volute where the first air inlet is opened is spaced from the first side portion.

[0014] In some embodiments, the microwave cooking appliance includes an exhaust member. The exhaust member is connected to the air outlet of the volute. The exhaust member extends from the direction away from the radio frequency module of the volute along the second direction to one side edge of the cavity along the second direction.

[0015] In some embodiments, the microwave cooking appliance includes an antenna assembly. The antenna assembly is electrically connected to the radio frequency module. The antenna assembly is installed on the first side portion. A cooking cavity is provided in the cavity. The antenna assembly includes a first portion located outside the cooking cavity and a second portion located inside the cooking cavity. The microwave cooking appliance includes a first connection air duct. The fan assembly communicates with the first diversion air duct through the first connection air duct. The first portion is located in the first connection air duct.

[0016] In some embodiments, the microwave cooking appliance includes an electronic control board assembly. The electronic control board assembly is provided on the first side portion. The microwave cooking appliance includes a second connection air duct. The fan assembly communicates with the second diversion air duct through the second connection air duct. The electronic control board assembly includes a circuit board and electrical components. The electrical components are provided on one side surface of the circuit board along the first direction. The electrical components are located in the second connection air duct.

[0017] In some embodiments, the microwave cooking appliance includes a water box and a control box assembly. The water box is provided on the first side portion. Along the second direction, the fan assembly is located between the water box and the radio frequency module. The control box assembly is movably connected to the cavity. The control box assembly can switch back and forth between a first position and a second position;

[0018] When the control box assembly is in the first position, along the second direction from the direction of the water box close to the fan assembly, the control box assembly shields the water box;

[0019] When the control box assembly is in the second position, along the second direction from the direction of the water box close to the fan assembly, the control box assembly does not shield the water box.

[0020] In some embodiments, the microwave cooking appliance includes a lifting assembly, the lifting assembly connecting the control box assembly and the cavity, and the lifting assembly being configured to drive the control box assembly to switch back and forth between the first position and the second position.

[0021] In some embodiments, the lifting assembly includes a fixing member and a connecting member, the connecting member connecting the control box assembly, the fixing member being fixed on the cavity, the fixing member being provided with one of a guiding space and a guiding block, the connecting member being provided with the other of the guiding block and the guiding space, the guiding block being partially received in the guiding space, the guiding space including a first section, a second section, and a third section, the second section being inclined relative to the second direction to connect the first section and the third section, the guiding block being capable of sliding from the first section along the second section to the third section, and from the third section along the second section to the first section;

[0022] When the guiding block is located in the first section, the control box assembly is located in the first position;

[0023] When the guiding block is located in the third section, the control box assembly is located in the second position.

[0024] In some embodiments, the lifting assembly includes a lifting driving member, the lifting driving member connecting the connecting member, the lifting driving member being configured to drive the connecting member to move so that the guiding block and the guiding space move relative to each other, and further enabling the guiding block to slide from the first section along the second section to the third section, and from the third section along the second section to the first section.

[0025] In some embodiments, the microwave cooking appliance includes a steam generator, the steam generator being installed on the cavity and connected to the water box, a cooking cavity being provided in the cavity, and the steam generator being configured to generate water vapor input into the cooking cavity.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0028] Figure 1 A three-dimensional schematic diagram of a microwave cooking appliance according to an embodiment of the present invention;

[0029] Figure 2 Another three-dimensional schematic diagram of a microwave cooking appliance according to an embodiment of the present invention;

[0030] Figure 3 A top view of a microwave cooking appliance according to an embodiment of the present invention;

[0031] Figure 4 An exploded schematic diagram of a microwave cooking appliance according to an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the connection between a radio frequency module and a radiator according to an embodiment of the present invention;

[0033] Figure 6 A three-dimensional schematic diagram of an air guide cover according to an embodiment of the present invention;

[0034] Figure 7 A three-dimensional schematic diagram of an antenna assembly according to an embodiment of the present invention;

[0035] Figure 8 A three-dimensional schematic diagram of a lifting assembly according to an embodiment of the present invention;

[0036] Figures 9 to 10 A schematic diagram of a control box assembly in a first position according to an embodiment of the present invention;

[0037] Figures 11 to 12 A schematic diagram of a control box assembly in a second position according to an embodiment of the present invention.

[0038] Explanation of reference numerals:

[0039] Microwave cooking appliance 100, cavity 12, RF module 14, air guide cover 16, power supply module 18, fan assembly 20, first air guiding duct 22, second air guiding duct 24, antenna assembly 26, rear outer cover 28, bottom outer cover 30, left outer cover 32, right outer cover 34, electrical chamber 36, furnace lamp 38, furnace door 40, electric push rod 42, first air inlet 44, second air inlet 46, connecting plate 48, first side plate 50, second side plate 52, third side plate 54, radiator 56, first air suction port 58, second air suction port 60, volute 62, fan 64, support member 66, exhaust member 68, first part 70, second part 72, first connecting duct 74, upper heating tube 76, lower heating tube 78, hot air assembly 80, support plate 82, hot air motor 84, rear heating tube 86, camera assembly 88, cooling fan 90, electronic control board assembly 92, second connecting duct 94, circuit board 96, electrical component 98, filter board 99, water box 97, control box assembly 95, steam generator 93, water pump 91, front plate 89, lifting assembly 87, fixing member 85, connecting member 83, guiding space 81, guiding block 79, first section 77, second section 75, third section 73, lifting drive member 71, gear set 69, rack 67, connecting rod 65, connecting shaft 63, mounting plate 61, antenna 59. Detailed implementation manners

[0040] The following describes in detail the implementation manners of the present invention. The examples of the implementation manners are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The implementation manners described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as a limitation to the present invention.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0044] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0045] Please refer Figures 1 to 6 to a microwave cooking appliance 100 provided by an embodiment of the present invention, which includes a cavity 12, a radio frequency module 14, a wind guide cover 16, a power supply module 18, and a fan assembly 20. The cavity 12 has a first side portion along a first direction. The radio frequency module 14 is disposed on the first side portion. The wind guide cover 16 is disposed on the first side portion. The wind guide cover 16 is provided with a first air guiding channel 22 and a second air guiding channel 24 that are arranged at intervals along the first direction. The radio frequency module 14 is disposed in the first air guiding channel 22.

[0046] The power supply module 18 is electrically connected to the radio frequency module 14, and the power supply module 18 is arranged in the second air guiding duct 24. The fan assembly 20 is arranged on the first side, the radio frequency module 14 and the fan assembly 20 are arranged along the second direction, and the fan assembly 20 is configured to accelerate the air flow in the first air guiding duct 22 and the second air guiding duct 24 along the second direction from one side of the cavity 12 to the other side.

[0047] In the above-mentioned microwave cooking appliance 100, the air guiding cover 16 is provided with a first air guiding duct 22 and a second air guiding duct 24 arranged at intervals along the first direction. The radio frequency module 14 is arranged in the first air guiding duct 22, the power supply module 18 is arranged in the second air guiding duct 24, and the fan assembly 20 can cool the radio frequency module 14 and the power supply module 18, ensuring that the radio frequency module 14 and the power supply module 18 operate within a normal temperature range.

[0048] Specifically, in one embodiment, the first direction is the up-down direction, the second direction is the front-back direction, the third direction is the left-right direction. The first side of the cavity 12 along the first direction is the top of the cavity 12, and the second side is the bottom of the cavity 12. The radio frequency module 14, the power supply module 18 and the air guiding cover 16 are located at the top of the cavity 12. It can be understood that in other embodiments, the first direction, the second direction and the third direction can also be other directions, which are not specifically limited herein.

[0049] The present invention does not specifically limit the material and shape of the cavity 12. Optionally, the cavity 12 is in a cuboid shape, and the cavity 12 can be manufactured by a process of stainless steel plus enamel.

[0050] The microwave cooking appliance 100 may include an antenna assembly 26. The antenna assembly 26 is installed in the cavity 12. For example, the antenna assembly 26 is installed at the top of the cavity 12. The number of the antenna assemblies 26 can be one, two or more than two, which is not specifically limited herein. The antenna assembly 26 is connected to the radio frequency module 14, and a cooking cavity is provided in the cavity 12. When the microwave cooking appliance 100 operates, the radio frequency module 14 can be used as a microwave source. The radio frequency module 14 can generate radio frequency signals according to the set phase, frequency and power. The radio frequency signals are transmitted to the antenna assembly 26, and the antenna assembly 26 feeds the radio frequency signals into the cooking cavity to heat the food located in the cooking cavity.

[0051] The air guiding cover 16 is provided with a first air guiding duct 22 and a second air guiding duct 24 arranged at intervals in the up-down direction. In Figure 6Among them, the first air guiding duct 22 is a lower air guiding duct, and the second air guiding duct 24 is an upper air guiding duct, that is, the air guiding cover 16 has two layers of air guiding ducts, the RF module 14 is located in the first air guiding duct 22, and the power module 18 is located in the second air guiding duct 24. When the power module 18 and the RF module 14 work, heat will be generated. When the fan assembly 20 is started, the air flow in the air guiding duct can be accelerated from one side of the cavity 12 to the other side along the second direction. Optionally, the air guiding cover 16 is made of a material with good heat dissipation performance, such as metal. The air guiding cover 16 can also be used as a bracket for the power module 18.

[0052] In one embodiment, when the fan assembly 20 is started, it can suck air from the outside of the microwave cooking appliance 100 into the air guiding duct. Along the second direction, the cavity 12 has a front side and a rear side, and the air guiding cover 16 is disposed close to the rear side of the cavity 12. When the fan assembly 20 is started, it sucks air from the rear side of the cavity 12, and the sucked cold air first passes through the RF module 14 and the power module 18 to cool the RF module 14 and the power module 18, ensuring that the power module 18 and the RF module 14 work within a normal temperature range. Moreover, when the power module 18 works at a normal temperature, it can also provide a stable power supply to the RF module 14 to ensure that the RF module 14 works as expected. The air after absorbing heat can be discharged from the front side of the cavity 12.

[0053] Optionally, the microwave cooking appliance 100 further includes a housing that covers the cavity 12. The housing may include a rear outer cover 28, a bottom outer cover 30, a left outer cover 32, a right outer cover 34, and a top outer cover (not shown in the figure). An electrical chamber 36 is formed at an interval between the top outer cover and the top of the cavity 12. The RF module 14, the air guiding cover 16, the fan assembly 20, and the power module 18 may be located in the electrical chamber 36. When the fan assembly 20 is started, it sucks air from the rear side of the electrical chamber 36 into the electrical chamber 36, and the air after absorbing heat is discharged from the front side of the electrical chamber 36.

[0054] Optionally, the microwave cooking appliance 100 includes an oven lamp 38, and the oven lamp 38 is installed on the cavity 12 for illuminating the interior of the cooking cavity.

[0055] Optionally, the microwave cooking appliance 100 includes an oven door 40 and an electric push rod 42. The electric push rod 42 is installed on the cavity 12, and the oven door 40 is rotatably connected to the cavity 12. An opening is formed on the front side of the cooking cavity in the cavity 12, and the oven door 40 can close and open the opening. When the oven door 40 closes the opening, the electric push rod 42 can push the oven door 40 outward to open the oven door 40 by an angle, which is convenient for the user to further open the oven door 40.

[0056] In some embodiments, the first air guiding duct 22 has a first air inlet 44, the second air guiding duct 24 has a second air inlet 46, and the area of the first air inlet 44 is larger than the area of the second air inlet 46.

[0057] In this way, the heat dissipation efficiency of the radio frequency module 14 can be improved.

[0058] Specifically, in Figure 6 , the first air inlet 44 is a lower air inlet, and the second air inlet 46 is an upper air inlet. Please refer to Figure 6 , the air guide cover 16 includes a connecting plate 48, a first side plate 50, a second side plate 52 and a third side plate 54. The first side plate 50 and the second side plate 52 are respectively connected to two sides of the connecting plate 48 along the third direction, and the third side plate 54 is connected to one side of the connecting plate 48 along the second direction and is located above the connecting plate 48. In Figure 6 In the illustrated embodiment, the first side plate 50 and the second side plate 52 are respectively connected to the left and right sides of the connecting plate 48, and the third side plate 54 is connected to the rear side of the connecting plate 48 and is located above the connecting plate 48. The third side plate 54 is provided with the second air inlet 46. The rear side of the connecting plate 48, the rear side of the first side plate 50 and the rear side of the second side plate 52 enclose the first air inlet 44.

[0059] In Figure 6 , the second air inlet 46 is composed of a plurality of sub-air inlets, and the area of the second air inlet 46 is the sum of the areas of all the sub-air inlets. The number of the first air inlets 44 is single. It can be understood that in other embodiments, the composition and number of the first air inlet 44 and the second air inlet 46 are not limited to the above composition and number, and may also be other composition and number, which are not specifically limited herein.

[0060] Since the area of the first air inlet 44 is larger than the area of the second air inlet 46, when the fan assembly 20 is started, a relatively large amount of cold air is inhaled from the first air inlet 44, which can improve the heat dissipation efficiency of the radio frequency module 14.

[0061] Optionally, please refer to Figure 5 , a radiator 56 is further provided on the radio frequency module 14. The radiator 56 is in contact with the radio frequency module 14. The radiator 56 includes a plurality of heat dissipation fins. The plurality of heat dissipation fins are arranged at intervals along the third direction (such as the left-right direction). A heat dissipation channel is formed between two adjacent heat dissipation fins. When the radio frequency module 14 works, the heat generated can be transferred to the heat dissipation fins of the radiator 56. When the fan assembly 20 is started, the accelerating air flow formed can enter the heat dissipation channel from the first air inlet 44, take away the heat of the heat dissipation fins, and then cool the radio frequency module 14, improving the heat dissipation efficiency of the radio frequency module 14.

[0062] In some embodiments, the fan assembly 20 has a first air suction port 58 and a second air suction port 60 arranged along the first direction. The first air suction port 58 communicates with the first air guide duct 22, and the second air suction port 60 communicates with the second air guide duct 24.

[0063] In this way, the air flow velocity of the air suction of the fan assembly 20 can be guaranteed.

[0064] Specifically, in Figure 4 the fan assembly 20 has a first air suction port 58 and a second air suction port 60 arranged in the up-down direction. The first air suction port 58 is a lower air suction port, and the second air suction port 60 is an upper air suction port. The first air guiding duct 22 is a lower air guiding duct, and the second air guiding duct 24 is an upper air guiding duct. The lower air suction port communicates with the lower air guiding duct, and the upper air suction port communicates with the upper air guiding duct.

[0065] When the fan assembly 20 is started, air is simultaneously sucked from the lower air guiding duct through the lower air suction port and from the upper air guiding duct through the upper air suction port, forming upper and lower layers of air flow channels. The air in the upper and lower air guiding ducts enters the fan assembly 20 through their respective air suction ports without affecting each other, ensuring the air flow velocity in the two air guiding ducts and improving the heat dissipation efficiency.

[0066] In some embodiments, the fan assembly 20 includes a volute 62 and a fan 64. The fan 64 is connected to the volute 62. The first air suction port 58 and the second air suction port 60 are respectively provided on two sides of the volute 62 along the first direction. The side of the volute 62 provided with the first air suction port 58 is spaced from the first side portion.

[0067] In this way, the volute 62 can be used to form the first air suction port 58 and the second air suction port 60, and the structure is simple.

[0068] Specifically, in Figure 4 the shown embodiment, the first air suction port 58 is a lower air suction port, and the second air suction port 60 is an upper air suction port. The upper and lower side surfaces of the volute 62 are respectively provided with an upper air suction port and a lower air suction port.

[0069] The lower side surface of the volute 62 is provided with a support member 66. The support member 66 supports the lower side surface of the volute 62, so that the lower side surface of the volute 62 is spaced from the top of the cavity 12, and thus the lower air suction port can communicate with the lower air guiding duct. The upper side surface of the volute 62 can be spaced from the top outer cover of the housing, and thus the upper air suction port can communicate with the upper air guiding duct.

[0070] The fan 64 may include a motor and blades. The motor is installed on the volute 62 through a bracket. The blades are located in the volute 62. An air outlet may be provided on the front side of the volute 62. When the motor is started, it drives the blades to rotate, sucks air from the upper air suction port and the lower air suction port, and discharges the air from the air outlet out of the volute 62 to the front side of the cavity 12.

[0071] In Figure 3 the fan assembly 20 includes two volutes 62 and two fans 64. It can be understood that the present invention does not specifically limit the number of the volutes 62 and the fans 64.

[0072] In some embodiments, the microwave cooking appliance 100 includes an exhaust member 68. The exhaust member 68 is connected to the air outlet of the volute 62 and extends from the volute 62 in a direction away from the RF module 14 along a second direction to a side edge of the cavity 12 along the second direction.

[0073] In this way, the discharge speed of the hot air can be ensured.

[0074] Specifically, the air entering from the air inlet of the volute 62 is hot air, and the hot air can be discharged from the air outlet of the volute 62 and enter the exhaust member 68. In Figure 4 In it, the exhaust member 68 extends from the volute 62 in a direction away from the RF module 14 (i.e., from the rear to the front direction) along the front-rear direction to the front side edge of the cavity 12. Furthermore, the hot air discharged from the volute 62 can be guided by the exhaust member 68 to the front side of the cavity 12, avoiding the hot air from scurrying around in the electrical chamber 36 and ensuring the discharge speed of the hot air.

[0075] In Figure 4 In one embodiment, two volutes 62 can share one exhaust member 68. In one embodiment, each volute 62 is connected to a corresponding exhaust member 68.

[0076] In some embodiments, the microwave cooking appliance 100 includes an antenna assembly 26. The antenna assembly 26 is electrically connected to the RF module 14. The antenna assembly 26 is installed on the first side portion. There is a cooking cavity in the cavity 12. Please refer to Figure 7 , the antenna assembly 26 includes a first portion 70 located outside the cooking cavity and a second portion 72 located inside the cooking cavity. The microwave cooking appliance 100 includes a first connecting air duct 74. The fan assembly 20 communicates with the first guiding air duct 22 through the first connecting air duct 74. The first portion 70 is located in the first connecting air duct 74.

[0077] In this way, the antenna assembly 26 can be cooled to ensure the performance of the antenna assembly 26.

[0078] Specifically, in one embodiment, the microwave cooking appliance 100 can be a microwave and grill integrated machine. The microwave cooking appliance 100 can include an upper heating tube 76 and a lower heating tube 78. The upper heating tube 76 is located in the upper part of the cooking cavity, and the lower heating tube 78 is located in the lower part of the cooking cavity. The upper heating tube 76 is spaced from the top wall of the cooking cavity inside the cooking cavity, and the lower heating tube 78 is spaced from the bottom wall of the cooking cavity inside the cooking cavity.

[0079] The antenna assembly 26 and the upper heating tube 76 can be installed on the same side plate or different side plates of the cavity 12. In Figure 4In it, the upper heating tube 76 is installed on the rear side plate of the cavity 12 and extends into the cooking cavity. The antenna assembly 26 is installed on the top plate of the cavity 12. The first part 70 of the antenna assembly 26 is located outside the cooking cavity, and the second part 72 is located inside the cooking cavity. The second part 72 is arranged at an interval from the upper heating tube 76.

[0080] In the barbecue mode, the upper heating tube 76 and / or the lower heating tube 78 can be powered on for heating. When the upper heating tube 76 and / or the lower heating tube 78 are heating, the core temperature of the cavity 12 is relatively high. Some components in the antenna assembly 26, such as the insulating parts, are prone to deformation at high temperatures. Due to the deformation of the insulating parts, the antenna 59 will tilt. The tilting of the antenna 59 can cause a change in the original matching between the antenna and the insulating parts, thereby affecting the performance of the antenna assembly 26.

[0081] The first part 70 is located in the first connecting air duct 74. When the fan assembly 20 is started, the air flow in the first guiding air duct 22 and the first connecting air duct 74 is accelerated, and the first part 70 of the antenna located in the first connecting air duct 74 is cooled, avoiding the deformation of the components in the antenna assembly 26 due to high temperature and ensuring the performance of the antenna assembly 26.

[0082] Optionally, the microwave cooking appliance 100 further includes a hot air assembly 80 and a support plate 82. The hot air assembly 80 is installed on the rear side plate of the cavity 12. The hot air assembly 80 is used to form a hot air circulation in the cooking cavity to cook food. Specifically, the hot air assembly 80 includes a hot air motor 84, a rear heating tube 86 and a fan blade. The support plate 82 is installed on the rear side plate of the cavity 12 to support the hot air motor 84. The fan blade is located in the cooking cavity. The output shaft of the hot air motor 84 passes through the cavity 12 and is connected to the fan blade. The rear heating tube 86 is installed on the rear wall of the cooking cavity and surrounds the fan blade.

[0083] Optionally, the microwave cooking appliance 100 further includes a camera assembly 88 and a cooling fan 90. The camera assembly 88 and the cooling fan 90 are installed on the cavity 12. The camera assembly 88 is configured to collect images of the food in the cooking cavity. The microwave cooking appliance 100 can use the images of the food in the cooking cavity to identify the cooking stage and then control the cooking process. The cooling fan 90 can dissipate heat from the camera assembly 88 to make the camera assembly 88 work within the normal temperature range.

[0084] In some embodiments, the microwave cooking appliance 100 includes an electronic control board assembly 92. The electronic control board assembly 92 is provided on the first side. The microwave cooking appliance 100 includes a second connecting air duct 94. The fan assembly 20 communicates with the second guiding air duct 24 through the second connecting air duct 94. The electronic control board assembly 92 includes a circuit board 96 and electrical components 98. The electrical components 98 are provided on one side surface of the circuit board 96 along the first direction. The electrical components 98 are located in the second connecting air duct 94.

[0085] In this way, the electrical components 98 of the electronic control board assembly 92 can be cooled, ensuring that the electronic control board assembly 92 operates within the normal temperature range.

[0086] Specifically, the electronic control board assembly 92 can be responsible for controlling the operation of the entire microwave cooking appliance 100, including but not limited to the opening and closing of the radio frequency module 14, the opening and closing of the power supply module 18, the parameter setting of the radio frequency signal of the radio frequency module 14 (such as phase, power, frequency, etc.), the opening and closing and speed regulation of the blower assembly 20, the opening and closing and power regulation of the heating tube, and other functions.

[0087] The electrical components 98 include but are not limited to components such as controllers, capacitors, resistors, and inductors. Figure 2 and Figure 4 In [reference], the electrical components 98 are provided on the upper side of the circuit board 96. The electrical components 98 are located in the second connection air duct 94. When the blower assembly 20 is started, the air flow speed in the second diversion air duct 24 and the second connection air duct 94 can be increased, enabling the air flow to accelerate the removal of heat from the electrical components 98, thereby cooling the electrical components 98 and ensuring that the electronic control board operates within the normal temperature range.

[0088] In addition, the circuit board 96 can divide the space in the electrical chamber 36 into a first connection air duct 74 (such as the following connection air duct) and a second connection air duct 94 (such as the upper connection air duct). The first connection air duct 74 and the first diversion air duct 22 can jointly form a lower air duct, and the second connection air duct 94 and the second diversion air duct 24 can jointly form an upper air duct. When the blower assembly 20 is started, the air flow in the upper and lower air ducts is accelerated, improving the heat dissipation efficiency of each heating component in the electrical chamber 36. Moreover, the air flows in the upper and lower air ducts do not interfere with each other or have less interference, which can ensure the air flow speed and further improve the heat dissipation efficiency.

[0089] Optionally, the microwave cooking appliance 100 includes a filter board 99. The filter board 99 is installed on the top of the cavity 12. The filter board 99 can be electrically connected to an external power supply (such as the mains 220V) and the electronic control board assembly 92. The filter board 99 will filter the voltage of the external power supply, and the filtered voltage can be input into the electronic control board assembly 92. The electronic control board assembly 92 outputs the voltage to the power supply module 18, and the power supply module 18 can convert the 220V voltage into a DC voltage of 50V, and the DC voltage is supplied to the radio frequency module 14.

[0090] In some embodiments, the microwave cooking appliance 100 includes a water box 97 and a control box assembly 95. The water box 97 is provided on the first side. Along the second direction, the blower assembly 20 is located between the water box 97 and the radio frequency module 14. The control box assembly 95 is movably connected to the cavity 12, and the control box assembly 95 can switch back and forth between a first position and a second position;

[0091] When the control box assembly 95 is in the first position, along the second direction from the water box 97 towards the blower assembly 20, the control box assembly 95 shields the water box 97.

[0092] When the control box assembly 95 is in the second position, along the second direction from the water box 97 towards the blower assembly 20, the control box assembly 95 does not shield the water box 97.

[0093] In this way, the movement of the control box assembly 95 can be used to shield and unshield the water box 97, which can make the operation area of the control box assembly 95 larger, and it is convenient for users to take out the water box 97.

[0094] Specifically, the microwave cooking appliance 100 has a steam cooking function. More specifically, the microwave cooking appliance 100 includes a steam generator 93 and a water pump 91. The water pump 91 is connected to the steam generator 93 and the water box 97. The water pump 91 can transport the water in the water box 97 to the steam generator 93. When the steam generator 93 works, it can heat the water into water vapor, and the water vapor can enter the cooking cavity along the pipeline to heat and cook the food in the cooking cavity.

[0095] Optionally, in Figure 2 , the steam generator 93 is arranged at the rear side of the cavity 12, the water pump 91 is arranged at the top of the cavity 12, and the water box 97 is arranged at the top of the cavity 12 near the front side edge of the cavity 12. An operation area can be provided on the side of the control box assembly 95 facing away from the cavity 12. Users can control the operation of the microwave cooking appliance 100 through the operation area, including but not limited to turning on and off the microwave cooking appliance 100, setting the heating temperature, setting the menu, setting the heating time, setting the cooking mode, etc.

[0096] When it is not necessary to take out the water box 97, the control box assembly 95 can be in the first position. Along the second direction from the water box 97 towards the blower assembly 20, the control box assembly 95 can shield the water box 97 to make the water box 97 not exposed. In Figure 1 and Figure 2 , the second direction is the front-back direction. Along the second direction from the water box 97 towards the blower assembly 20 is the direction from front to back. That is, when the control box assembly 95 is in the first position, in the direction from front to back, the control box assembly 95 shields the water box 97 to make the water box 97 not exposed. Moreover, the water box 97 does not occupy the space of the front side edge of the top of the cavity 12 in the left-right direction (the third direction). The length of the control box assembly 95 in the left-right direction (the third direction) can be larger, making the operation area of the control box assembly 95 larger, and more function buttons and / or larger function buttons can be set.

[0097] When it is necessary to take out the water tank 97, the control box assembly 95 can be switched from the first position to the second position. Along the second direction, which is the direction from the water tank 97 towards the blower assembly 20, the control box assembly 95 does not block the water tank 97, exposing the water tank 97. Please refer to Figure 2 and Figure 8 In, the second direction is the front-back direction. Along the second direction, the direction from the water tank 97 towards the blower assembly 20 is the front-to-back direction. That is, when the control box assembly 95 is in the second position, in the front-to-back direction, the control box assembly 95 does not block the water tank 97, exposing the water tank 97. Users can conveniently take out the water tank 97 for operations such as adding water and cleaning. After the operation is completed, the user can put the water tank 97 back on top of the cavity 12. The control box assembly 95 can be switched from the second position to the first position, and the control box assembly 95 blocks the water tank 97 without affecting the user's use of the microwave cooking appliance 100.

[0098] Optionally, the microwave cooking appliance 100 includes a front panel 89 (such as an aluminum alloy panel). The front panel 89 is installed on the top of the cavity 12, and the front panel 89 is provided with an opening to expose the water tank 97.

[0099] In Figures 1 to 4 In the illustrated embodiment, the microwave cooking appliance 100 includes a radio frequency module 14, a heating tube, a water tank 97, and a steam generator 93. The microwave cooking appliance 100 is a microwave steam convection oven, that is, the microwave cooking appliance 100 has microwave cooking, barbecue cooking, and steam cooking functions. It can be understood that in other embodiments, the microwave cooking appliance 100 may also have only microwave cooking function, or only microwave cooking and barbecue cooking functions, or only microwave cooking and steam cooking functions, which are not specifically limited herein.

[0100] In some embodiments, the microwave cooking appliance 100 includes a lifting assembly 87. The lifting assembly 87 is connected to the control box assembly 95 and the cavity 12, and the lifting assembly 87 is configured to drive the control box assembly 95 to switch back and forth between the first position and the second position.

[0101] In this way, the control box assembly 95 can be switched back and forth between the first position and the second position.

[0102] Specifically, please refer to Figures 8 to 12 , when the control box assembly 95 needs to be switched from the first position to the second position, the lifting assembly 87 can drive the control box assembly 95 to move obliquely upward away from the cavity 12, thereby exposing the water tank 97 on the front side of the cavity 12. When the control box assembly 95 needs to be switched from the second position to the first position, the lifting assembly 87 can drive the control box assembly 95 to move obliquely downward towards the cavity 12, thereby causing the control box assembly 95 to block the water tank 97 on the front side of the cavity 12, making the water tank 97 not exposed.

[0103] In some embodiments, the lifting assembly 87 includes a fixing member 85 and a connecting member 83. The connecting member 83 is connected to the control box assembly 95. The fixing member 85 is fixed on the cavity 12. The fixing member 85 is provided with one of a guiding space 81 and a guiding block 79, and the connecting member 83 is provided with the other of the guiding block 79 and the guiding space 81. The guiding block 79 is partially received in the guiding space 81. The guiding space 81 includes a first section 77, a second section 75, and a third section 73. The second section 75 is inclinedly connected to the first section 77 and the third section 73 with respect to a second direction. The guiding block 79 can slide from the first section 77 along the second section 75 to the third section 73, and slide from the third section 73 along the second section 75 to the first section 77;

[0104] When the guiding block 79 is located in the first section 77, the control box assembly 95 is in the first position;

[0105] When the guiding block 79 is located in the third section 73, the control box assembly 95 is in the second position.

[0106] In this way, the position of the control box assembly 95 can be switched by the relative movement of the guiding block 79 and the guiding space 81, and the structure is simple.

[0107] Specifically, in the Figure 8 illustrated embodiment, the fixing member 85 is provided with the guiding space 81, and the connecting member 83 is provided with the guiding block 79. The specific form of the guiding space 81 is a through hole. The guiding block 79 passes through the through hole, and the guiding block 79 can slide along the guiding space 81 defined by the through hole, thereby driving the control box assembly 95 to switch positions. It can be understood that in other embodiments, the specific form of the guiding space 81 can be a groove, a recess, a blind hole, etc. The guiding space 81 can be provided on the connecting member 83, and the guiding block 79 can be provided on the fixing member 85.

[0108] In Figure 8 , the second direction is the front-back direction. The second section 75 is inclinedly connected to the first section 77 and the third section 73 with respect to the front-back direction. The position of the first section 77 is lower, and the position of the third section 73 is higher.

[0109] When the guiding block 79 is located in the first section 77, the control box assembly 95 is in the first position. When the control box assembly 95 needs to be switched from the first position to the second position, the guiding block 79 can slide from the first section 77 along the second section 75 to the third section 73. At the same time, the connecting member 83 drives the control box assembly 95 to move obliquely upward away from the cavity 12 under the guidance of the guiding block 79, so that the water box 97 is exposed on the front side of the cavity 12.

[0110] When the guiding block 79 is located in the third section 73, the control box assembly 95 is in the second position. When the control box assembly 95 needs to switch from the second position to the first position, the guiding block 79 can slide from the third section 73 along the second section 75 to the first section 77. Meanwhile, the connecting piece 83 drives the control box assembly 95 to move obliquely downward and closer to the cavity 12 under the guidance of the guiding block 79, thereby enabling the control box assembly 95 to block the water box 97, and the water box 97 is not exposed at the front side of the cavity 12.

[0111] The fixing piece 85 and the connecting piece 83 are both arranged on the left and right sides at the rear of the control box assembly 95, so that the control box assembly 95 is more stable and not prone to shaking when moving and when in the first and second positions.

[0112] In some embodiments, the lifting assembly 87 includes a lifting driving member 71. The lifting driving member 71 is connected to the connecting piece 83, and the lifting driving member 71 is configured to drive the connecting piece 83 to move, causing relative movement between the guiding block 79 and the guiding space 81, so that the guiding block 79 can slide from the first section 77 along the second section 75 to the third section 73, and from the third section 73 along the second section 75 to the first section 77.

[0113] In this way, automatic position switching of the control box assembly 95 can be achieved.

[0114] Specifically, in one embodiment, the fixing piece 85 is provided with a guiding space 81, and the connecting piece 83 is provided with a guiding block 79. When the guiding block 79 is located in the first section 77, the control box assembly 95 is in the first position, as Figure 9 and Figure 10 shown. When the lifting driving member 71 works, it can drive the connecting piece 83 to move, causing the guiding block 79 to slide from the first section 77 along the second section 75 to the third section 73, and the control box assembly 95 switches from the first position to the second position, as Figure 11 and Figure 12 shown.

[0115] Please refer to Figures 8 to 12 , when the guiding block 79 is located in the third section 73, the control box assembly 95 is in the second position. When the lifting driving member 71 works, it can drive the connecting piece 83 to move, causing the guiding block 79 to slide from the third section 73 along the second section 75 to the first section 77, and the control box assembly 95 switches from the second position to the first position.

[0116] In Figure 8Among them, the lifting driving member 71 includes a motor. The motor can be connected to the connecting member 83 through a transmission assembly. Optionally, the transmission assembly includes a gear set 69, a rack 67, and a connecting rod 65. The gear set 69 is connected to the output shaft of the motor. The gear set 69 meshes with the rack 67. The rack 67 is fixedly connected to the connecting rod 65. The forward rotation of the motor can push the connecting rod 65 outwards to push the connecting member 83, thereby switching the control box assembly 95 from the first position to the second position. The reverse rotation of the motor can pull the connecting member 83 inwards, thereby switching the control box assembly 95 from the second position to the first position.

[0117] Optionally, the lifting assembly 87 further includes a connecting shaft 63. The two ends of the connecting shaft 63 are respectively connected to two gear sets 69. One motor can drive the movement of the connecting members 83 on the left and right sides at the rear of the control box assembly 95.

[0118] Optionally, the microwave cooking appliance 100 includes a mounting plate 61. The lifting assembly 87, the radio frequency module 14, the blower assembly 20, the air guide cover 16, the exhaust member 68, the water box 97, the water pump 91, the electronic control board assembly 92, etc. are all located above the mounting plate 61. The mounting plate 61 is located at the top of the cavity 12.

[0119] It can be understood that in other embodiments, manual driving can also be used to control the control box assembly 95 to switch positions.

[0120] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0121] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A microwave cooking appliance, characterized in that, Comprising: A cavity having a first side portion along a first direction; A radio frequency module disposed on the first side portion; An air guide cover disposed on the first side portion, the air guide cover being provided with a first air guiding duct and a second air guiding duct arranged at intervals along the first direction, the radio frequency module being disposed in the first air guiding duct; A power supply module electrically connected to the radio frequency module, the power supply module being disposed in the second air guiding duct; A fan assembly disposed on the first side portion, the radio frequency module and the fan assembly being arranged along a second direction, the fan assembly being configured to cause the air flow in the first air guiding duct and the second air guiding duct to flow from one side of the cavity to the other side along the second direction at an accelerated speed.

2. The microwave cooking appliance according to claim 1, wherein, The first air guiding duct has a first air inlet, and the second air guiding duct has a second air inlet, and the area of the first air inlet is larger than the area of the second air inlet.

3. The microwave cooking appliance according to claim 1, characterized in that, The fan assembly has a first air suction port and a second air suction port arranged along the first direction, the first air suction port communicating with the first air guiding duct, and the second air suction port communicating with the second air guiding duct.

4. The microwave cooking appliance according to claim 3, wherein, The fan assembly includes a volute and a fan, the fan being connected to the volute, and the first air suction port and the second air suction port are respectively provided on two side surfaces of the volute along the first direction, and the side surface of the volute provided with the first air suction port is spaced from the first side portion.

5. The microwave cooking appliance according to claim 4, wherein The microwave cooking appliance includes an exhaust member connected to the air outlet of the volute, and the exhaust member extends from the direction of the volute away from the radio frequency module along the second direction to one side edge of the cavity along the second direction.

6. The microwave cooking appliance according to claim 1, wherein, The microwave cooking appliance includes an antenna assembly electrically connected to the radio frequency module, the antenna assembly being mounted on the first side portion, a cooking cavity being provided in the cavity, the antenna assembly including a first portion located outside the cooking cavity and a second portion located inside the cooking cavity, the microwave cooking appliance including a first connecting duct, and the fan assembly communicating with the first air guiding duct through the first connecting duct, and the first portion being located in the first connecting duct.

7. The microwave cooking appliance according to claim 1, wherein, The microwave cooking appliance includes an electronic control board assembly disposed on the first side portion, the microwave cooking appliance including a second connecting duct, the fan assembly communicating with the second air guiding duct through the second connecting duct, the electronic control board assembly including a circuit board and electrical components, and the electrical components being disposed on one side surface of the circuit board along the first direction, and the electrical components being located in the second connecting duct.

8. The microwave cooking appliance according to claim 1, wherein The microwave cooking appliance includes a water box and a control box assembly, the water box being disposed on the first side portion, along the second direction, the fan assembly being located between the water box and the radio frequency module, and the control box assembly being movably connected to the cavity and capable of switching back and forth between a first position and a second position; When the control box assembly is in the first position, along the second direction from the direction of the water box close to the fan assembly, the control box assembly shields the water box; When the control box assembly is in the second position, along the second direction from the water box towards the blower assembly, the control box assembly does not block the water box.

9. The microwave cooking appliance according to claim 8, wherein, The microwave cooking appliance includes a lifting assembly that connects the control box assembly and the cavity, and the lifting assembly is configured to drive the control box assembly to switch back and forth between the first position and the second position.

10. The microwave cooking appliance according to claim 9, characterized in that, The lifting assembly includes a fixing member and a connecting member. The connecting member is connected to the control box assembly, and the fixing member is fixed to the cavity. The fixing member is provided with one of a guiding space and a guiding block, and the connecting member is provided with the other of the guiding block and the guiding space. The guiding block is partially received in the guiding space. The guiding space includes a first section, a second section, and a third section. The second section is inclined relative to the second direction to connect the first section and the third section. The guiding block can slide from the first section along the second section to the third section, and slide from the third section along the second section to the first section. When the guiding block is in the first section, the control box assembly is in the first position. When the guiding block is in the third section, the control box assembly is in the second position.

11. The microwave cooking appliance according to claim 10, wherein, The lifting assembly includes a lifting driving member that is connected to the connecting member. The lifting driving member is configured to drive the connecting member to move so that the guiding block and the guiding space move relative to each other, and further enable the guiding block to slide from the first section along the second section to the third section, and slide from the third section along the second section to the first section.

12. The microwave cooking appliance according to claim 8, wherein, The microwave cooking appliance includes a steam generator that is installed on the cavity and connected to the water box. A cooking cavity is provided in the cavity, and the steam generator is configured to generate water vapor that is input into the cooking cavity.

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