Microwave heating device and cooking equipment

Abstract

The invention relates to the technical field of kitchen appliances, and particularly discloses a microwave heating device and cooking equipment, the microwave heating device comprises a shell, a solid state source assembly and a diversion assembly, the solid state source assembly comprises a low heating part and a high heating part which are arranged in the shell; the flow guide assembly is arranged in the shell and comprises a draught fan, and the draught fan is used for enabling external gas to sequentially flow through the low-heating part and the high-heating part. According to the microwave heating device, the external gas firstly dissipates heat of the low-heating part and then dissipates heat of the high-heating part, in the process, when the external gas carrying heat of the low-heating part dissipates heat of the high-heating part, the heat dissipation effect of the high-heating part is basically not affected, and therefore the heat dissipation effect is improved through the microwave heating device.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a microwave heating device and a cooking device. Background Art

[0002] In the existing home appliance market, microwave cooking devices such as microwave ovens, ovens with microwave functions or steamers with microwave functions have solid source components in their microwave heating devices that generate a lot of heat during operation and need to be cooled.

[0003] The microwave heating device in the prior art drives the gas through a fan so that the gas passes through a solid source component to dissipate heat, but the heat dissipation effect is not ideal, which affects the stability of product performance and the user experience.

[0004] Therefore, there is an urgent need for a microwave heating device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a microwave heating device and a cooking device to solve the problem in the related art that the solid source component is directly cooled by a fan, resulting in unsatisfactory heat dissipation effect, affecting the stability of product performance and the user experience.

[0006] The present invention provides a microwave heating device, which comprises:

[0007] case;

[0008] a solid state source assembly, comprising a low heat generating component and a high heat generating component disposed within the housing;

[0009] The flow guide component is arranged in the shell, and comprises a fan, and the fan is used to make the external air flow through the low-heat generating component and the high-heat generating component in sequence.

[0010] As a preferred technical solution of the microwave heating device, a guide channel is formed in the shell, and the guide channel includes an air outlet and an air inlet, and along the gas flow direction in the guide channel, the air inlet, the fan and the air outlet are distributed in sequence;

[0011] The low heat generating component is arranged at the air inlet duct, and the high heat generating component is arranged at the air outlet duct.

[0012] As a preferred technical solution of the microwave heating device, the air inlet duct surrounds the air outlet duct.

[0013] As a preferred technical solution of the microwave heating device, the air inlet and the air outlet are distributed along a direction perpendicular to the flow direction of the gas in the air outlet, and the width of the air inlet is less than or equal to the width of the air outlet along a direction perpendicular to the flow direction of the gas in the air outlet;

[0014] A plurality of the low heat generation components are provided, and the plurality of the low heat generation components are sequentially distributed along the gas flow direction of the air inlet duct.

[0015] As a preferred technical solution of the microwave heating device, the path length of the gas flowing from the fan to the high heat generating component is shorter than the path length of the gas flowing from the high heat generating component to the exhaust end of the air outlet duct.

[0016] As a preferred technical solution of the microwave heating device, the high-heat generating component includes a microwave solid-state source and a coaxial cable, and the microwave solid-state source and the coaxial cable are sequentially distributed along the gas flow direction of the air outlet duct.

[0017] As an optimal technical solution for the microwave heating device, along the flow direction of the gas in the air outlet duct, the air outlet duct is divided into a first section and a second section, the cross-sectional area of ​​the first section remains unchanged, the cross-sectional area of ​​the second section gradually decreases, and the high heat generation component is arranged in the first section.

[0018] As a preferred technical solution of the microwave heating device, a mounting cavity is formed in the shell, the guide assembly further comprises a guide plate, the guide plate is arranged in the mounting cavity, the guide plate divides the mounting cavity into an air outlet and an air inlet that are interconnected, and the fan is used to make the external air flow through the air inlet and the air outlet in sequence;

[0019] It also includes an inner tank and an exhaust pipe, one end of the exhaust pipe is connected to the inner tank, the other end of the exhaust pipe passes through the guide plate and extends into the air outlet duct, and along the flow direction of the gas in the air outlet duct, the other end of the exhaust pipe is located downstream of the high heat generating component.

[0020] As an optimal technical solution for the microwave heating device, the guide assembly also includes a partition, which is arranged in the air outlet duct and extends along the flow direction of the gas in the air outlet duct. The partition divides the air outlet duct into a first channel and a second channel along a direction perpendicular to the flow direction of the gas in the air outlet duct. The high heat generation component is arranged in the first channel, and the other end of the exhaust pipe is located in the second channel.

[0021] The present invention also provides cooking equipment, comprising any one of the microwave heating devices described above.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a microwave heating device and a cooking device. The microwave heating device includes a shell, a solid source component and a flow guide component. The solid source component includes a low-heating component and a high-heating component arranged in the shell; the flow guide component is arranged in the shell, and the flow guide component includes a fan, which is used to make external gas flow through the low-heating component and the high-heating component in sequence. When the microwave heating device is working, the heat emitted by the high-heating component is higher than the heat emitted by the low-heating component. Therefore, the external gas under the action of the fan first dissipates heat to the low-heating component, and then dissipates heat to the high-heating component. In this process, when the external gas carrying the heat of the low-heating component dissipates heat to the high-heating component, it basically does not affect the heat dissipation effect of the high-heating component. Therefore, the microwave heating device dissipates heat to the high-heating component and the low-heating component in sequence through the fan, thereby improving the heat dissipation effect, improving product performance and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a microwave heating device in the prior art;

[0025] Figure 2 The structure of the microwave heating device in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 3 The structure of the microwave heating device in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 4 The structure of the microwave heating device in the embodiment of the present invention is shown in FIG. Figure 3 ;

[0028] Figure 5 The structure of the microwave heating device in the embodiment of the present invention is shown in FIG. Figure 4 ;

[0029] Figure 6 The structure of the microwave heating device in the embodiment of the present invention is shown in FIG. Figure 5 ;

[0030] Figure 7 The structure of the microwave heating device in the embodiment of the present invention is shown in FIG. Figure 6 ;

[0031] Figure 8 The structure of the microwave heating device in the embodiment of the present invention is shown in FIG. Figure 7 ;

[0032] Fig. 9 The structure of the microwave heating device in the embodiment of the present invention is shown in FIG. Figure 8 .

[0033] In the figure:

[0034] 1. Shell; 121. Air intake hole; 13. Exhaust hole; 14. Side air intake hole;

[0035] 21. Low heat generating components; 211. DC power supply; 212. Power board; 213. Water pump; 214. Water tank; 22. High heat generating components; 221. Microwave solid source; 2211. Functional body; 2212. Heat dissipation unit; 222. Antenna; 223. Coaxial cable;

[0036] 31. guide plate; 311. top plate; 3111. flat plate; 3112. inclined plate; 312. vertical plate; 32. fan; 321. exhaust port; 322. air inlet; 33. first frame; 34. second frame; 35. third frame;

[0037] 41, air outlet; 411, first channel; 412, second channel; 42, air inlet;

[0038] 5. Inner tank; 6. Exhaust pipe; 7. Partition. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] The working principle of microwave heating cooking equipment in the existing home appliance market is: microwaves of a specific frequency are generated through a magnetron, which are absorbed by polar molecules in food and converted into heat energy, thereby achieving rapid, internal heating effects; the heating appliances include magnetrons, transformers, waveguide boxes, etc., which have shortcomings such as large size, inability to adjust frequency and phase, and low overall efficiency.

[0044] With the continuous progress of semiconductor microwave heating technology, "microwave solid-state source" has broad application prospects in the field of microwave energy application due to its simple and convenient installation, easy control, and adjustable parameters such as frequency, phase, and power. In recent years, the "semiconductor microwave solid-state source" module heating technology is gradually being used in cooking equipment to heat food;

[0045] like Figure 1As shown, the solid-state source components in the cooking equipment in the prior art generally include a DC power supply 211, a power board 212, a microwave solid-state source 221, an antenna 222, a coaxial cable 223, etc. The heating principle of the microwave solid-state source 221 is based on microwave technology. Specifically, a semiconductor solid-state source device is used as a source of microwave energy. By effectively converting electrical energy into microwave energy of a specific frequency, the microwave energy is fed into the inner pot 5 through the coaxial cable 223 and the antenna 222. The DC power supply 211 provides a signal power supply to the semiconductor microwave solid-state source 221, which then acts on the material to be heated to achieve a fast, uniform and efficient heating process. During this process, components such as the microwave solid-state source 221, the antenna 222 and the coaxial cable 223 generate a large amount of heat and are considered high-heat generating components 22, while components such as the DC power supply 211 and the power board 212 generate less heat and are considered low-heat generating components 21. The high-heat generating components 22 and the low-heat generating components 21 are not reasonably distributed in their positions during installation, which results in that when the fan 32 dissipates heat from the solid-state source assembly, the hot gas passing through the high-heat generating component 22 flows to the low-heat generating component 21, causing the temperature of the low-heat generating component 21 to rise instead of fall, resulting in an unsatisfactory heat dissipation effect, affecting the stability of product performance and the user experience.

[0046] like Figure 2 to Figure 9 As shown, this embodiment provides a microwave heating device to solve the above problems. The microwave heating device includes a shell 1, a solid source component and a guide component. The solid source component includes a low-heating component 21 and a high-heating component 22 arranged in the shell 1; the guide component is arranged in the shell 1, and the guide component includes a guide plate 31 and a fan 32. The guide plate 31 is arranged in the shell 1, and the guide plate 31 and the shell 1 are surrounded by a guide channel. The low-heating component 21 and the high-heating component 22 are both arranged in the guide channel. The fan 32 is used to make the external gas flow from the air inlet end of the guide channel to the exhaust end of the guide channel, so that the external gas flows through the low-heating component 21 and the high-heating component 22 in sequence. When the microwave heating device is working, the heat emitted by the high-heating component 22 is higher than the heat emitted by the low-heating component 21. If the wind blown by the fan 32 acts on the high-heating component 22 first, and then acts on the low-heating component 21, or acts on the high-heating component 22 and the low-heating component 21 at the same time, the heat carried by the high-heating component 22 will affect the heat dissipation of the low-heating component 21. Therefore, the external gas in the guide channel of the present application first dissipates heat to the low-heating component 21, and then dissipates heat to the high-heating component 22. In this process, when the external gas carrying the heat of the low-heating component 21 dissipates heat to the high-heating component 22, it basically does not affect the heat dissipation effect of the high-heating component 22. Therefore, the microwave heating device dissipates heat to the high-heating component 22 and the low-heating component 21 in turn through the fan 32, thereby improving the heat dissipation effect, improving product performance and user experience.

[0047] like Figure 3As shown, optionally, the housing 1 is provided with an installation cavity, the solid source component and the guide component are both provided in the installation cavity, the guide plate 31 divides the installation cavity into a guide channel, and the side wall of the housing 1 is provided with an air inlet and an exhaust hole 13, the air inlet is connected to the air inlet end of the guide channel, and the exhaust hole 13 is connected to the exhaust end of the guide channel. In this embodiment, when the guide channel is provided with an air inlet end and an exhaust end, the guide channel can be one of the arrangements such as a serpentine arrangement, a spiral arrangement, or a straight line arrangement. When the guide channel is provided with two air inlet ends and one exhaust end, the guide channel can be one of the arrangements such as an M-shaped arrangement or a Y-shaped arrangement.

[0048] Optionally, the guide channel is divided into an air outlet duct 41 and an air inlet duct 42, the air inlet hole and the air exhaust hole 13 are arranged on a side wall of the shell 1 along the gas flow direction in the air outlet duct 41, the air inlet hole includes two air inlet branch holes 121, and the two air inlet branch holes 121 are arranged on both sides of the exhaust hole 13 along the direction perpendicular to the gas flow in the air outlet duct 41; the guide plate 31 is fixedly connected to the bottom wall of the shell 1 and surrounded to form the air outlet duct 41, and the guide plate 31 is arranged at intervals from the two side walls of the shell 1 along the direction perpendicular to the gas flow in the air outlet duct 41, so that the guide plate 31 is arranged along the direction perpendicular to the gas flow in the air outlet duct 41. Two air inlets 42 are formed on both sides of the gas flow direction in the air outlet 41 and the shell 1, and one end of the two air inlets 42 is respectively connected to one end of the air outlet 41, and the air inlet 42 surrounds the two sides of the air outlet 41, so that the air outlet 41 and the two air inlets 42 form a guide channel, the other end of the air outlet 41 is connected to the exhaust hole 13, and the other ends of the two air inlets 42 are respectively connected to the corresponding air inlet branch holes 121, and the low-heat-generating component 21 is arranged in the two air inlets 42, and the high-heat-generating component 22 is arranged in the air outlet 41. In this embodiment, the guide plate 31 and the shell 1 are surrounded by an M-shaped guide channel. Under the action of the fan 32, the external gas first enters the two air inlets 42, and the low-heat-generating component 21 is cooled and cooled. Then, the external gas enters the air outlet 41, and the high-heat-generating component 22 in the air outlet 41 is cooled and cooled, and finally flows out from the exhaust hole 13.

[0049] like Figure 7 As shown, specifically, the guide plate 31 includes a top plate 311 and two vertical plates 312 arranged on both sides of the top plate 311 along a direction perpendicular to the gas flow in the air outlet 41. The top plate 311, the bottom wall of the shell 1 and the two vertical plates 312 are arranged to form the air outlet 41; the bottom wall, the top wall, the two vertical plates 312 and the side walls opposite to the two vertical plates 312 of the shell 1 are respectively arranged to form two air inlet ducts 42.

[0050] Optionally, the housing 1 is provided with side air inlets 14 along two side walls perpendicular to the gas flow direction in the air outlet 41. In this embodiment, external air can also enter the two air inlets 42 from the side air inlets 14, thereby increasing the air intake of the guide channel.

[0051] Specifically, the guide plate 31 is an integrally formed part.

[0052] Optionally, the air outlet side of the fan 32 is set as the air outlet 41, and the air inlet side of the fan 32 is set as the air inlet 42; the fan 32 is set on the side of the guide plate 31 away from the exhaust hole 13 along the gas flow direction in the air outlet 41, and the fan 32 is provided with an exhaust port 321 along the gas flow direction in the air outlet 41, and two opposite air inlets 322 are provided along the gas flow direction perpendicular to the air outlet 41, the exhaust port 321 is connected to one end of the air outlet 41, and the two air inlets 322 are respectively connected to one end of the two air inlets 42. In this embodiment, two impellers are respectively arranged in the two air inlets 322, and when the fan 32 is working, the two impellers guide the gas in the two air inlets 42 to the air outlet 41.

[0053] Optionally, the air inlet 42 and the air outlet 41 are distributed along a direction perpendicular to the flow of gas in the air outlet 41, and the width of the air inlet 42 is less than or equal to the width of the air outlet 41 along the direction perpendicular to the flow of gas in the air outlet 41; a plurality of low heat generation components 21 are provided, and the plurality of low heat generation components 21 are distributed in sequence along the flow of gas in the air inlet 42. In this embodiment, since the size of the air inlet 42 along the direction perpendicular to the flow of gas in the air outlet 41 is small, the plurality of low heat generation components 21 are distributed in sequence along the flow of gas in the air inlet 42.

[0054] like Figure 4 As shown, optionally, the guide assembly further includes a first frame 33, the first frame 33 is disposed in an air inlet 42 and extends along the gas flow direction in the air inlet 42, the first frame 33 is opposite to an air inlet end of the fan 32, the first frame 33 supports the low-heat component 21, the low-heat component 21 on the first frame 33 is spaced apart from the bottom wall of the housing 1 by H1, the axis of the air inlet end of the fan 32 is spaced apart from the bottom wall of the housing 1 by h, and H1>h. In this embodiment, the first frame 33 enables the low-heat component 21 to be spaced apart from the bottom wall of the housing 1, so that the outside gas can flow toward the fan 32 through the channel between the low-heat component 21 and the bottom wall of the housing 1, and in this process, the outside gas can take away the heat generated by the low-heat component 21. In order to allow the gas to flow smoothly from the channel between the low-heat-generating component 21 and the bottom wall of the housing 1 to the air inlet 322 of the fan 32, H1>h is required. This setting can ensure that the relative area between the channel between the low-heat-generating component 21 and the bottom wall of the housing 1 and the air inlet 322 of the fan 32 is large enough, thereby increasing the amount of air entering the air inlet 322 of the fan 32. Specifically, the first frame 33 can be a plurality of first protrusions protruding from the bottom wall of the housing 1, and the low-heat-generating component 21 is in contact with the plurality of first protrusions at the same time, so as to realize the spacing between the low-heat-generating component 21 and the bottom wall of the housing 1.

[0055] like Figure 5As shown, optionally, the air guide assembly further includes a second frame 34 and a third frame 35, the second frame 34 and the third frame 35 are both arranged in another air inlet duct 42, and the second frame 34 and the third frame 35 are sequentially arranged along the gas flow direction in the air inlet duct 42, the second frame 34 is close to the air inlet branch hole 121, the third frame 35 is opposite to the other air inlet end of the fan 32, the second frame 34 and the third frame 35 both support the low heat component 21, the low heat component 21 on the second frame 34 is at a distance H2 from the bottom wall of the shell 1, and the low heat component 21 on the third frame 35 is at a distance H from the bottom wall of the shell 1 3， The distance between the axis of the air inlet end of the fan 32 and the bottom wall of the housing 1 is h, H3>H2, and H3>h. In this embodiment, the purpose of H3>H2 is to ensure that when the external gas enters the channel between the third frame 35 and the bottom wall of the housing 1 from the channel between the second frame 34 and the bottom wall of the housing 1, the external gas is not blocked and can pass smoothly; the purpose of H3>h is to ensure that the channel between the low-heat-generating component 21 on the third frame 35 and the bottom wall of the housing 1 and the air inlet 322 of the fan 32 are large enough, thereby increasing the air intake into the air inlet 322 of the fan 32. Specifically, the second frame 34 and the third frame 35 can be a plurality of second protrusions and a plurality of third protrusions protruding from the bottom wall of the housing 1, and different low-heat-generating components 21 are simultaneously abutted against a plurality of second protrusions or abutted against a plurality of third protrusions, so as to achieve the spacing between the low-heat-generating component 21 and the bottom wall of the housing 1.

[0056] Specifically, the low heat generation component 21 includes a DC power supply 211, a circuit board, a water tank 214 and a water pump 213. The water tank 214 and the water pump 213 can be arranged on the first frame 33, the circuit board is arranged on the second frame 34, and the DC power supply 211 is arranged on the third frame 35.

[0057] like Figure 6-Figure 8 As shown, optionally, the microwave heating device further includes an inner pot 5 and an exhaust pipe 6, one end of the exhaust pipe 6 is connected to the inner pot 5, the other end of the exhaust pipe 6 passes through the guide plate 31 and extends into the air outlet 41, and the other end of the exhaust pipe 6 is located between the high-heat-generating component 22 and the exhaust hole 13. In this embodiment, the steam discharged from the inner pot 5 directly enters the air outlet 41 and is then discharged from the exhaust hole 13. Since the other end of the exhaust pipe 6 is located between the high-heat-generating component 22 and the exhaust hole 13, the steam will not affect the high-heat-generating component 22.

[0058] Optionally, the guide assembly further includes a baffle 7, which is disposed in the air outlet 41 and extends along the gas flow direction in the air outlet 41. The baffle 7 divides the air outlet 41 into a first channel 411 and a second channel 412 perpendicular to the gas flow direction in the air outlet 41. The high-heat generating component 22 is disposed in the first channel 411, and the other end of the exhaust pipe 6 is opposite to the second channel 412. In this embodiment, the gas entering the air outlet 41 directly acts on the other end of the exhaust pipe 6 through the second flow channel 42, thereby quickly discharging the steam at the other end of the exhaust pipe 6 out of the exhaust hole 13. Since the gas entering the air outlet 41 directly acts on the other end of the exhaust pipe 6 through the second flow channel 42, the gas wind pressure will not be weakened.

[0059] Optionally, the path length of the gas flowing from the fan 32 to the high heat generating component 22 is shorter than the path length of the gas flowing from the high heat generating component 22 to the exhaust end of the air outlet 41. In this embodiment, this arrangement can reduce the path length between the fan 32 and the high heat generating component 22, which is conducive to the gas flowing out of the fan 32 to quickly act on the high heat generating component 22.

[0060] like Fig. 9 As shown, optionally, the top plate 311 is divided into a flat plate 3111 and an inclined plate 3112 which are connected to each other along the gas flow direction in the air outlet duct 41. The flat plate 3111 is parallel to the bottom wall of the shell 1, and the inclined plate 3112 is inclined toward the bottom wall of the shell 1 and forms a preset angle a with the bottom wall of the shell 1. In this embodiment, the flat plate 3111, two vertical plates 312 and the bottom wall of the shell 1 are arranged to form a first section, the inclined plate 3112, two vertical plates 312 and the bottom wall of the shell 1 are arranged to form a second section, and the high-heat-generating component 22 is arranged in the first section. Specifically, the high-heat-generating component 22 includes a microwave solid-state source 221, an antenna 222, and a coaxial cable 223, which are sequentially arranged in the first section along the gas flow direction in the air outlet 41. The microwave solid-state source 221 is respectively attached to and abutted against the flat plate 3111, the partition 7, a vertical plate 312 and the bottom wall, wherein the microwave solid-state source 221 includes a functional body 2211 and a heat dissipation portion 2212 arranged on one side of the functional body 2211, and the heat dissipation portion 2212 can allow gas to flow through. This arrangement ensures that the gas in the air outlet 41 must flow through the heat dissipation portion 2212, thereby improving the heat dissipation efficiency of the microwave solid-state source 221.

[0061] The angle a between the inclined plate 3112 and the bottom wall of the shell 1 is less than 25°. Within this range, the smaller the angle, the better, ensuring a smooth gas passage and avoiding blocking backflow. The microwave solid-state source 221, the antenna 222, and the coaxial cable 223 are arranged between the flat plate 3111 and the bottom wall. The wind pressure at this position is relatively small, and the wind volume is correspondingly large. The cold air in the air inlet duct 42 and the hot air at the position of the microwave solid-state source 221, the antenna 222, and the coaxial cable 223 are fully convectively exchanged.

[0062] This embodiment also provides a cooking device, including the microwave heating device in the above solution.

[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A microwave heating device, characterized in that: include: Housing (1); A solid source assembly, comprising a low-heat-generating component (21) and a high-heat-generating component (22) arranged in the housing (1); A flow guide component is arranged in the housing (1) and comprises a fan (32). The fan (32) is used to make external air flow through the low-heat generating component (21) and the high-heat generating component (22) in sequence.

2. The microwave heating device according to claim 1, characterized in that: A guide channel is formed in the shell (1), the guide channel comprising an air outlet (41) and an air inlet (42), and along the flow direction of the gas in the guide channel, the air inlet (42), the fan (32) and the air outlet (41) are sequentially distributed; The low-heat-generating component (21) is arranged in the air inlet duct (42), and the high-heat-generating component (22) is arranged in the air outlet duct (41).

3. The microwave heating device according to claim 2, characterized in that: The air inlet duct (42) surrounds the air outlet duct (41).

4. The microwave heating device according to claim 2, characterized in that: The air inlet duct (42) and the air outlet duct (41) are distributed along a direction perpendicular to the flow direction of the gas in the air outlet duct (41); along a direction perpendicular to the flow direction of the gas in the air outlet duct (41), the width of the air inlet duct (42) is less than or equal to the width of the air outlet duct (41); A plurality of the low-heat-generating components (21) are provided, and the plurality of the low-heat-generating components (21) are distributed in sequence along the gas flow direction of the air inlet duct (42).

5. The microwave heating device according to claim 2, characterized in that: The path length of the gas flowing from the fan (32) to the high-heat-generating component (22) is shorter than the path length of the gas flowing from the high-heat-generating component (22) to the exhaust end of the air outlet duct (41).

6. The microwave heating device according to claim 2, characterized in that: The high-heat-generating component (22) comprises a microwave solid-state source (221) and a coaxial cable (223); the microwave solid-state source (221) and the coaxial cable (223) are sequentially distributed along the gas flow direction of the air outlet duct (41).

7. The microwave heating device according to claim 2, characterized in that: Along the flow direction of the gas in the air outlet duct (41), the air outlet duct (41) is divided into a first section and a second section, the cross-sectional area of ​​the first section remains unchanged, and the cross-sectional area of ​​the second section gradually decreases, and the high heat generating component (22) is arranged in the first section.

8. The microwave heating device according to claim 1, characterized in that: The housing (1) is formed with an installation cavity, the guide assembly further comprising a guide plate (31), the guide plate (31) being arranged in the installation cavity, the guide plate (31) dividing the installation cavity into an air outlet duct (41) and an air inlet duct (42) which are interconnected, and the fan (32) is used to make the external air flow through the air inlet duct (42) and the air outlet duct (41) in sequence; It also includes an inner liner (5) and an exhaust pipe (6), one end of the exhaust pipe (6) being in communication with the inner liner (5), the other end of the exhaust pipe (6) passing through the guide plate (31) and extending into the air outlet duct (41), and along the flow direction of the gas in the air outlet duct (41), the other end of the exhaust pipe (6) is located downstream of the high-heat-generating component (22).

9. The microwave heating device according to claim 8, characterized in that: The flow guide assembly further comprises a partition (7), wherein the partition (7) is arranged in the air outlet duct (41) and extends along the flow direction of the gas in the air outlet duct (41), and the partition (7) divides the air outlet duct (41) into a first channel (411) and a second channel (412) in a direction perpendicular to the flow direction of the gas in the air outlet duct (41), the high heat generating component (22) is arranged in the first channel (411), and the other end of the exhaust pipe (6) is located in the second channel (412).

10. A cooking device, characterized in that The microwave heating device comprises the microwave heating device according to any one of claims 1 to 9.

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