CN211324471U

CN211324471U - Microwave barbecue machine

Info

Publication number: CN211324471U
Application number: CN201921294930.7U
Authority: CN
Inventors: 陈小强; 李丰
Original assignee: Guangdong Galanz Enterprises Co Ltd; Guangdong Galanz Microwave Electric Manufacturing Co Ltd
Current assignee: Guangdong Galanz Enterprises Co Ltd; Guangdong Galanz Microwave Electric Manufacturing Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-08-25
Anticipated expiration: 2029-08-09

Abstract

The utility model provides a microwave barbecue machine, including box and shell, establish the cavity in the shell, the cavity is equipped with the cavity roof, cavity roof top is equipped with first radiator unit, second radiator unit, the magnetron, variable frequency power supply, microwave agitator motor and waveguide box, microwave agitator motor sets up the top at the waveguide box, first radiator unit is equipped with first exhaust fan and wind scooper, second radiator unit is equipped with second exhaust fan and exhaust passage, still including establishing air intake and the air outlet on microwave barbecue machine, both ends all are equipped with the opening around the wind scooper. The utility model discloses a first radiator unit and second radiator unit exhaust hot-blast mix mutually, make air outlet department exhaust hot-blast relatively even, not only effectively dispel the heat to electrical components, still prevent the too high heat of air outlet exhaust temperature.

Description

Microwave barbecue machine

Technical Field

The utility model relates to a cooking appliance, in particular to a microwave barbecue machine.

Background

Microwave, microwave barbecue machine of barbecue function, including magnetron, the heating tube of barbecue usefulness, when food heating, magnetron or heating tube can produce the heat, outside these heats need the box of microwave barbecue machine of discharging effectively, with dispel the heat to the electrical components in the box, and then the electrical components in the protective box, common microwave barbecue machine all generally directly discharges outside the box with electrical components's heat on the one hand, lead to the exhaust heat temperature higher, if the human body contacts the higher heat of this temperature, then feel uncomfortable. On the other hand, the heat dissipation effect of the common microwave barbecue machine is not ideal. And thus, is in need of further improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a heat is discharged evenly, the radiating effect ideal, the structrual installation is compact, effectively solves the problem that current microwave barbecue machine heat dissipation efficiency is low, improves radiating effect's microwave barbecue machine to overcome the weak point among the prior art.

The microwave barbecue machine comprises a box body, a shell and a cavity arranged in the shell, wherein the cavity is provided with a cavity top wall, a first radiating component, a second radiating component, a magnetron, a variable frequency power supply, a microwave stirring motor and a waveguide box are arranged above the cavity top wall, the first radiating component is provided with a first exhaust fan and a wind scooper, the second radiating component is provided with a second exhaust fan and an exhaust channel, the microwave barbecue machine also comprises an air inlet and an air outlet which are arranged on the microwave barbecue machine, the front end and the rear end of the wind scooper are provided with openings, the microwave stirring motor is arranged above the waveguide box, the opening at the tail part of the wind scooper is communicated with the air inlet, the magnetron and the variable frequency power supply are arranged in the wind scooper, the air inlet, the first exhaust fan, the wind scooper and the air outlet are communicated in sequence to form a first radiating channel for radiating the, The first exhaust fan enters the air guide cover, and outside cold air flows to the variable frequency power supply and the magnetron and is blown to the air outlet through the first exhaust fan; the second exhaust fan is provided with an upper air inlet and a lower air inlet, the microwave stirring motor is close to the upper air inlet, and the second exhaust fan sucks hot air around the microwave stirring motor through the upper air inlet so as to dissipate heat of the microwave stirring motor and further protect the microwave stirring motor.

The upper air inlet, the lower air inlet, the exhaust channel and the air outlet are sequentially communicated to form a second heat dissipation channel for assisting in heat dissipation of the microwave stirring motor, the second heat dissipation assembly is further provided with a cold air inlet communicated with outside air, the cold air inlet is communicated with the exhaust channel to enable outside cold air and hot air sucked from the microwave stirring motor to be blown to the air outlet through a second exhaust fan, and hot air exhausted from the first heat dissipation channel and the second heat dissipation channel is mixed at the inner side of the air outlet and is exhausted out of the box body. The hot air of the first and second heat dissipation channels is mixed at the inner side of the air outlet, the hot air discharged from the air outlet is more uniform, and the temperature of the hot air discharged from the air outlet is reduced.

The first and second exhaust fans are vortex fans.

The air guide cover comprises a front air guide cover upper cover and a rear air guide cover upper cover, the front air guide cover upper cover covers the magnetron, the magnetron is positioned on the air guide cover base, and the rear air guide cover upper cover covers the variable frequency power supply; the tail of the upper cover of the rear air guide cover is provided with a concave step, the concave step is provided with a step air inlet, a first exhaust fan is arranged below the step air inlet, the shell comprises a rear cover plate and an upper cover plate, the air inlet is arranged on the rear cover plate, the concave step upwards extends out of a vertical enclosing wall, the rear cover plate and the upper cover plate enclose an air inlet channel communicated with the air inlet, and the air coming in from the air inlet channel is completely cold air outside the box body. And a vertical enclosing wall is arranged above the first exhaust fan so as to shorten the total length of the first heat dissipation assembly, and the structure is compact.

The second heat dissipation assembly is also provided with an exhaust hood, an upper air guide hood positioned below the exhaust hood and a lower air guide hood positioned below the upper air guide hood, an exhaust channel is formed between the exhaust hood and the upper air guide hood, and a second exhaust fan is positioned in the exhaust channel; go up the gas guide cover and all be equipped with the breach that runs through from top to bottom with gas guide cover down, the waveguide box is established in the breach of last gas guide cover and gas guide cover down, and waveguide box top is equipped with the heat exchanger that separates that is used for covering the waveguide box, separates heat exchanger and connects with last gas guide cover, separates the heat exchanger top and is equipped with the motor mount, and microwave agitator motor fixes on the motor mount.

The heating tube of during operation cavity roof below can produce the heat of high temperature, is equipped with the heat exchanger that separates that is used for covering the waveguide box above the waveguide box to prevent that the heating tube from producing on the heat transfer of high temperature reaches microwave agitator motor, protection microwave agitator motor. The microwave stirring motor is a core component, and if the microwave stirring motor is damaged, the microwave injected into the cavity cannot be stirred, so that the food is not uniformly heated, and the problem of microwave ignition is easily caused.

The heat insulation cover is connected to the upper air guide cover, so that heat on the heat insulation cover is conducted to the upper air guide cover, and the heat is taken away through the upper air guide cover and the second exhaust fan. Thereby further reducing the amount of heat conducted to the microwave agitator motor.

The cavity roof is equipped with the installation boss, and the waveguide box transversely is established on the top side of cavity, and the waveguide box is equipped with the ripples mouth and goes into the ripples mouth, goes out ripples mouth one end and installation boss fixed connection, goes into ripples mouth one end and magnetron connection, and the wind scooper is unsettled in cavity roof top including the wind scooper base that is located the magnetron below, and the magnetron below carries out the bearing through the wind scooper base. The magnetron is heavy and is transversely fixed at one end of the wave inlet of the waveguide box, so that the waveguide box is easy to sink due to the influence of external force in the transportation process, microwave leakage is easy to generate, and the waveguide box is effectively prevented from sinking through the support of the air guide cover base; in addition, the air guide cover base, the air guide cover upper cover and the rear air guide cover upper cover are assembled to form the air guide cover for guiding and radiating the magnetron and the variable frequency power supply, so that the radiating effect is ensured.

The microwave barbecue machine further comprises an LED illumination assembly of the illumination cavity, the LED illumination assembly comprises an LED lamp, an LED lamp radiator and a light guide column, the second heat dissipation assembly is further provided with a fan cover covering the second exhaust fan, the fan cover is made of metal, the periphery of the fan cover is integrally bent to form a folded edge, and the LED lamp radiator is tightly attached to the folded edge. The LED lamp radiator is tightly attached to the folded edge of the fan cover, heat of the LED lamp radiator is conducted to the folded edge of the metal fan cover, the heat of the folded edge in the metal fan cover is taken away by the second exhaust fan during operation, and then the heat of the LED lamp radiator is taken away, so that the high-power LED lamp is cooled, and the service life of the LED lamp is prolonged.

The fixing part for fixing the light guide column is arranged at the bottom of the LED lamp radiator, the light guide column is fixed on the fixing part of the LED lamp radiator, the light guide column is convenient to install, and the assembling efficiency is improved.

Be equipped with the pit in the middle of the light guide post top, in the LED lamp stretched into the pit, the light that makes the LED lamp send can kick into the light guide post completely, improves the leaded light rate.

The second heat dissipation assembly is provided with an exhaust hood, an upper air guide hood and a lower air guide hood from top to bottom, an exhaust channel is formed between the exhaust hood and the upper air guide hood, an air inlet channel communicated with the exhaust channel is formed between the upper air guide hood and the lower air guide hood, the exhaust channel and the air inlet channel are respectively communicated with a lower air inlet, the air inlet channel is provided with more than one cold air inlet, and the light guide column penetrates through the exhaust channel and the air inlet channel from top to bottom and extends into the cavity. On the heat in the cavity conducts the leaded light post easily, the heat got into inlet channel, exhaust passage along the leaded light post, and the heat on the leaded light post blows the air outlet through second exhaust fan, effectively dispels the heat to the leaded light post.

A heating tube is arranged below the top wall of the cavity, and the part of the light guide column extending into the cavity is arranged at the periphery of the heating tube; in addition, the bottom of leaded light post sets up the scarf towards the middle direction of cavity. The heat at the periphery of the heating tube is lower than that at the middle, so that the phenomenon that the service life of the LED lamp is influenced because the temperature of the light guide column is too high and the light guide column is transmitted to the LED lamp is avoided; meanwhile, the bottom end of the light guide column is provided with a chamfer facing the middle direction of the cavity, so that light emitted by the LED lamp can be conducted to the center direction of the cavity, and the irradiation area is increased.

The top in the cavity is equipped with the heating tube, is equipped with the microwave entrance in the middle of the cavity roof, and microwave entrance below covers there is the heat insulating board that is used for transmitting the microwave, and the heat insulating board is located the top of heating tube, is equipped with ascending arch in the middle of the heat insulating board. The heat insulation plate is a glass plate.

Because the heating tube at the top of the cavity is close to the microwave injection port, the heat of the heating tube and the smoke of the cavity are easily transferred into the waveguide box, thereby affecting the microwave stirring motor and/or the magnetron, and the heat insulation plate is arranged to insulate heat and smoke of the heating tube at the top of the cavity; the heat insulating board sets up to middle upwards protruding, and the contrast is made to bellied heat insulating board and dull and stereotyped heat insulating board, and bellied heat insulating board can prevent that the heat insulating board from leading to the deformation to sink because of the high temperature that the top heating tube produced, and then reduces thermal-insulated and keep apart the steam effect.

The microwave barbecue machine also comprises a motor linkage shaft which is connected with the microwave stirring motor in a matching way, the motor linkage shaft penetrates through the bottom of the waveguide box, one end of the motor linkage shaft, which penetrates through the waveguide box, is connected with a microwave stirring sheet, the microwave stirring sheet is provided with a straight strip part and a hook part, the straight strip part is provided with a shaft connecting hole, and the microwave stirring sheet is connected with the motor linkage shaft through the shaft connecting hole; in the linear direction of the straight strip part, the linear distance from the outer end of the straight strip part to the circular center of the shaft connecting hole is S1, the linear distance from the outer end of the hook part to the circular center of the shaft connecting hole is S2, and S1 is more than S2.

The driving shaft of the microwave stirring motor drives the microwave stirring sheet to rotate through the motor linkage shaft, the input microwave is uniformly radiated into the cooking cavity by utilizing the rotation motion of the microwave stirring sheet, and S1 is more than S2, so that the uniformity of microwave stirring can be improved, and the microwave absorbed by each surface of food is more uniform. The microwave is scattered, when the microwave stirring sheet rotates, because S1 is more than S2, namely the contact area of the straight strip part and the microwave is increased, the microwave is ensured to be stirred by the straight strip part in the scattering process, so that the uniformity of the stirred microwave is improved.

The front part of the second radiating component is provided with an opening, the front opening of the air guide cover is communicated with the front opening of the second radiating component, the two front openings jointly form an air outlet of the microwave barbecue machine, hot air discharged by the first radiating component and the second radiating component is mixed at the front openings communicated with each other, so that the hot air discharged at the air outlet is relatively uniform, and the highest temperature of the air outlet can be reduced.

The microwave barbecue machine also comprises a door body and a control panel positioned above the door body, the door body and the control panel are arranged vertically and alternately, and the air outlet is positioned between the door body and the control panel.

The utility model has the advantages as follows:

a. the hot air exhausted by the first heat dissipation assembly and the hot air exhausted by the second heat dissipation assembly are mixed, so that the hot air exhausted from the air outlet is uniform, the heat of the electrical element is effectively dissipated, and the heat with overhigh temperature is prevented from being exhausted from the air outlet.

b. The LED lighting assembly structurally changes, so that the light guide rate and the irradiation area of the LED lamp are improved, the heat dissipation effect is ensured, and the LED lamp is effectively protected when the cooking appliance works.

c. The performance of the microwave stirring sheet is improved so that the food can uniformly absorb the microwave when being heated.

Drawings

Fig. 1 is a schematic perspective view of a microwave barbecue machine according to an embodiment of the present invention.

Fig. 2 is a schematic view of a three-dimensional structure of a microwave barbecue machine according to an embodiment of the present invention after a housing of the box is detached.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an exploded view of a microwave barbecue machine according to an embodiment of the present invention.

Fig. 5 is an enlarged view at B in fig. 4.

Fig. 6 is a schematic view of another exploded perspective of the microwave oven according to an embodiment of the present invention.

Fig. 7 is an exploded schematic view of a second heat dissipation assembly according to an embodiment of the present invention.

Fig. 8 is a schematic cross-sectional view of an internal structure of a microwave barbecue machine according to an embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view of another aspect of the internal structure of the microwave barbecue machine according to an embodiment of the present invention.

Fig. 10 is an enlarged view at C in fig. 9.

Fig. 11 is a schematic structural view of a detachable door of a microwave oven according to an embodiment of the present invention.

Fig. 12 is a schematic structural view of an LED lighting assembly of a microwave barbecue machine according to an embodiment of the present invention.

Fig. 13 is an enlarged view at D in fig. 12.

Fig. 14 is a schematic view of a connection structure between a microwave stirring motor and a waveguide box according to an embodiment of the present invention.

Fig. 15 is a schematic structural view of a microwave stirring plate according to an embodiment of the present invention.

In the figure, 1 is a box body, 1.1 is a shell, 1.2 is a rear cover plate, 1.3 is an air inlet, 1.4 is an upper cover plate, 2 is a cavity, 2.1 is a top wall of the cavity, 2.2 is a mounting boss, 3 is a magnetron, 4 is a variable frequency power supply, 5 is a microwave stirring motor, 6 is a first exhaust fan, 7 is a second exhaust fan, 7.1 is an upper air inlet, 7.2 is a lower air inlet, 8 is an air outlet, 9 is an air guide cover base, 10 is a front air guide cover upper cover, 11 is a rear air guide cover upper cover, 11.1 is a concave step, 11.2 is a step air inlet, 11.3 is a surrounding wall, 12 is an exhaust cover, 13 is an upper air guide cover, 13.1 is a notch, 14 is a lower air guide cover, 14.1 is a notch, 15 is a waveguide box, 16 is a heat insulation cover, 17 is a motor, 18 is an LED lamp, 19 is an LED lamp radiator, 19.1 is a fixing piece, 20.1 is a light guide column, 20.1 is a chamfered surface, 20.2 is a fan groove, 21.21 is a fan groove, and a fan fixing frame is, 23 is a heat insulation plate, 23.1 is a bulge, 24 is a motor linkage shaft, 25 is a microwave stirring sheet, 25.1 is a straight strip part, 25.2 is a hook part, 25.3 is a shaft connecting hole, 26 is a door body, 27 is a control panel, and 28 is a cold air inlet.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1-3, a microwave barbecue machine comprises a box body 1 and a shell 1.1 thereof, a cavity 2 arranged in the shell 1.1, the cavity 2 is provided with a cavity top wall 2.1, a first heat dissipation component, a second heat dissipation component, a magnetron 3, a variable frequency power supply 4, a microwave stirring motor 5 and a waveguide box 15 are arranged above the cavity top wall 2.1, the microwave stirring motor 5 is arranged above the waveguide box 15, the first heat dissipation component is provided with a first exhaust fan 6 and a wind scooper, the second heat dissipation component is provided with a second exhaust fan 7 and an exhaust passage, the microwave barbecue machine further comprises an air inlet 1.3 and an air outlet 8 which are arranged on the microwave barbecue machine, openings are arranged at the front end and the rear end of the wind scooper, the opening at the tail part of the wind scooper is communicated with the air inlet 1.3, the magnetron 3 and the variable frequency power supply 4 are arranged in the wind scooper, the air inlet 1.3, the first exhaust fan 6, the wind scooper and the, so that external cold air in the box body 1 enters the air guide cover through the air inlet 1.3 and the first exhaust fan 6, flows to the variable frequency power supply 4 and the magnetron 3 and is blown to the air outlet 8 through the first exhaust fan 6; the second exhaust fan 7 is provided with an upper air inlet 7.1 and a lower air inlet 7.2, the microwave stirring motor 5 is close to the upper air inlet 7.1, and heat generated by the microwave stirring motor 5 during working enters an exhaust channel of the second heat dissipation assembly through the upper air inlet 7.1 to protect the microwave stirring motor 5; go up into wind gap 7.1, go into wind gap 7.2 down, exhaust passage and air outlet 8 communicate in proper order to form and carry out the second heat dissipation channel of supplementary heat dissipation to microwave agitator motor 5, the second radiator unit still is equipped with the cold air entry 28 of intercommunication outside air, cold air entry 28 intercommunication exhaust passage to make outside cold wind, the inspiratory hot-blast air of microwave agitator motor 5 department blow to air outlet 8 through second exhaust fan 7, the hot-blast air that first, second heat dissipation channel exhaust mixes and discharges outside box 1 in air outlet 8 inboard mutually. The external cold air of the second heat dissipation channel and the hot air sucked by the microwave stirring motor 5 are mixed and then blown to the air outlet 8, and then mixed with the variable frequency power supply 4 and the magnetron 3 blown to the air outlet 8, so that the temperature of the hot air discharged from the air outlet 8 is effectively reduced, and the hot air discharged is relatively uniform. The first and

second exhaust fans

6 and 7 are both vortex fans.

The hot wind discharged from the first heat dissipation path flows as shown by the arrow in fig. 8.

The front part of the second heat radiation component is provided with an opening, the front opening of the air guide cover is communicated with the front opening of the second heat radiation component, the two front openings jointly form an air outlet 8 of the microwave barbecue machine, the microwave barbecue machine further comprises a door body 26 and a control panel 27 positioned above the door body 26, the door body 26 and the control panel 27 are arranged vertically, and the air outlet 8 is positioned between the door body 26 and the control panel 27. The hot air exhausted by the first heat dissipation assembly and the hot air exhausted by the second heat dissipation assembly are mixed at the front openings communicated with each other, so that the hot air exhausted at the air outlet 8 is more uniform, and the highest temperature of the air outlet 8 can be reduced.

Referring to fig. 4-6, the wind guiding cover comprises a front wind guiding cover upper cover 10 and a rear wind guiding cover upper cover 11, the front wind guiding cover upper cover 10 covers the magnetron 3, and the rear wind guiding cover upper cover 11 covers the variable frequency power supply 4; the tail of back wind guide cover upper cover 11 is equipped with recessed step 11.1, be equipped with step inlet 11.2 on the recessed step 11.1, step inlet 11.2 below is equipped with first exhaust fan 6, shell 1.1 includes back shroud 1.2 and upper cover plate 1.4, air intake 1.3 is established on back shroud 1.2, recessed step 11.1 upwards extends vertical enclosure wall 11.3, back shroud 1.2, the synthetic air inlet channel who communicates air intake 1.3 that encloses of upper cover plate 1.4 three. The air coming from the air inlet channel is completely the cold air outside the box body. And a vertical enclosing wall is arranged above the first exhaust fan so as to shorten the total length of the first heat dissipation assembly, and the structure is compact. The enclosing wall is arc-shaped.

Cavity roof 2.1 is equipped with installation boss 2.2, waveguide box 15 transversely establishes the top side at cavity 2, waveguide box 15 is equipped with the ripples mouth and goes into the ripples mouth, ripples mouth one end and installation boss 2.2 fixed connection go into ripples mouth one end and magnetron 3 connection, the wind scooper is including being located the wind scooper base 9 of magnetron 3 below, magnetron 3 unsettled in cavity roof 2.1 top, bearing is carried through wind scooper base 9 below magnetron 3.

The magnetron 3 is heavy, and the magnetron 3 is transversely fixed at one end of the wave inlet of the waveguide box 15, so that the waveguide box 15 is easy to sink due to the influence of external force in the transportation process, microwave leakage is easy to generate, and the waveguide box 15 is effectively prevented from sinking through the support of the air guide cover base 9; in addition, the air guide cover base 9, the air guide cover upper cover 10 and the rear air guide cover upper cover 11 are assembled to form the air guide cover for guiding and radiating the magnetron 3 and the variable frequency power supply 4, so that the radiating effect is ensured. The external cold air of the box body enters the air guide cover through the air inlet 1.3, flows to the variable frequency power supply 4 and the magnetron 3, and is blown to the air outlet 8 by the first exhaust fan 6 after taking away heat generated by the variable frequency power supply 4 and the magnetron 3. Effectively radiating the variable frequency power supply 4 and the magnetron 3.

Referring to fig. 7-8, the second heat dissipation assembly further includes an exhaust hood 12, an upper air guide hood 13 located below the exhaust hood 12, and a lower air guide hood 14 located below the upper air guide hood 13, an exhaust passage is formed between the exhaust hood 12 and the upper air guide hood 13, and the second exhaust fan 7 is located in the exhaust passage; the upper air guide cover 13 and the lower air guide cover 14 are both provided with gaps 13.1 and 14.1 which penetrate through from top to bottom, the waveguide box 15 is arranged in the gaps 13.1 and 14.1 of the upper air guide cover 13 and the lower air guide cover 14, a heat insulation cover 16 for covering the waveguide box 15 is arranged above the waveguide box 15, the heat insulation cover 16 is connected with the upper air guide cover 13, a motor fixing frame 17 is arranged above the heat insulation cover 16, and the microwave stirring motor 5 is fixed on the motor fixing frame 17.

Because the heating tube 22 is arranged in the cavity 2, the heating tube 22 is positioned at the top of the cavity 2, and the heating tube 22 below the top wall 2.1 of the cavity can generate high-temperature heat during operation, the heat shield 16 for covering the waveguide box 15 is arranged above the waveguide box 15, so that the heat generated by the heating tube 22 is prevented from being transmitted to the microwave stirring motor 5 positioned on the waveguide box 15, and the microwave stirring motor 5 is protected. The microwave stirring motor 5 is a core component, and if damaged, the microwave injected into the cavity 2 cannot be stirred, so that the food is not uniformly heated, and the problem of microwave ignition is easily caused.

The heat shield 16 is attached to the upper hood 13 so that heat from the heat shield 16 is conducted to the upper hood 13 and is carried away by the upper hood 13 and the second exhaust fan 7. Thereby further reducing the amount of heat conducted to the microwave agitator motor 5.

Referring to fig. 9-11, a heating tube 22 is disposed at the top of the cavity 2, a microwave inlet is disposed in the middle of the top wall 2.1 of the cavity, a heat insulation plate 23 for transmitting microwaves is covered below the microwave inlet, the heat insulation plate 23 is located above the heating tube 22, and an upward protrusion 23.1 is disposed in the middle of the heat insulation plate 23.

Because the heating tube 22 at the top of the cavity 2 is close to the microwave injection port, the heat of the heating tube 22 and the smoke of the cavity 2 are easily transmitted into the waveguide box 15, thereby affecting the microwave stirring motor 5 and/or the magnetron 3, and the heating tube 22 at the top of the cavity 2 can be insulated and the smoke can be isolated by arranging the heat insulation plate 23; the heat insulation plate 23 is arranged to be convex upward in the middle, and compared with a flat heat insulation plate, the convex heat insulation plate 23 can prevent the heat insulation plate from deforming and sinking due to high temperature generated by the top heating pipe 22, so that the heat insulation and smoke insulation effects are reduced.

The insulating plate 23 is a glass plate.

Referring to fig. 12-13, the microwave barbecue machine further comprises an LED illumination assembly of the illumination cavity 2, the LED illumination assembly comprises an LED lamp 18, an LED lamp radiator 19 and a light guide column 20, the second heat dissipation assembly is further provided with a fan cover 21 covering the second exhaust fan 7, the fan cover 21 is made of metal, the periphery of the fan cover 21 is integrally bent to form a folded edge 21.1, and the LED lamp radiator 19 is tightly attached to the folded edge 21.1. The LED lamp radiator 19 is tightly attached to the folded edge 21.1 of the fan cover 21, heat of the LED lamp radiator 19 is conducted to the folded edge 21.1 of the metal fan cover 21, heat of the folded edge 21.1 in the metal fan cover 21 is taken away by the second exhaust fan 7 during operation, and then heat of the LED lamp radiator 19 is taken away, so that heat of the high-power LED lamp 18 is dissipated, and the service life of the LED lamp 18 is prolonged.

The bottom of the LED lamp radiator 19 is provided with a fixing piece 19.1 for fixing the light guide column 20, and the light guide column 20 is fixed on the fixing piece 19.1 of the LED lamp radiator 19; during installation, the light guide column penetrates through and is inserted into the fixing piece, and a limiting groove and a limiting step are arranged between the fixing piece and the light guide column to limit the downward insertion displacement of the fixing piece into the light guide column. By providing the fixing member 19.1, it is convenient to install the light guide pole 20.

Be equipped with pit 20.2 in the middle of the light guide post 20 top, LED lamp 18 stretches into in the pit 20.2, makes the light that LED lamp 18 sent can kick into light guide post 20 completely, and the light that LED lamp 18 sent is covered by pit 22 cage, and the light is difficult to scatter to improve the leaded light rate.

The second heat dissipation assembly is provided with an exhaust hood 12, an upper air guide hood 13 and a lower air guide hood 14 from top to bottom, an exhaust channel is formed between the exhaust hood 12 and the upper air guide hood 13, an air inlet channel communicated with the exhaust channel is formed between the upper air guide hood 13 and the lower air guide hood 14, the air inlet channel is provided with more than one cold air inlet 28, and the light guide column 20 penetrates through the exhaust channel and the air inlet channel from top to bottom and extends into the cavity 2; on heat in the cavity 2 conducts the leaded light post 20 easily, the heat gets into second radiator unit's inlet channel, exhaust passage along leaded light post 20, and the heat on the leaded light post 20 blows air outlet 8 through second exhaust fan 7, effectively dispels the heat to leaded light post 20, prevents leaded light post 20 accumulation too much heat and unable heat dissipation, leads to on the heat conducts LED lamp 18, and then influences the life-span of LED lamp 18.

The bottom end of the light guide pole 20 is provided with a chamfer 20.1 facing the middle direction of the cavity 2. The bottom end of the light guide column 20 is provided with a chamfer 20.1 facing the middle direction of the cavity 2, so that light emitted by the LED lamp 18 can be conducted to the center direction of the cavity 2, and the irradiation area is increased. After the light emitted from the LED lamp 18 is conducted to the light guide post 20, the light is conducted to the center of the cavity 2 along the inclined plane 20.1.

The cavity 2 is provided with a cavity top wall 2.1, a heating tube 22 is arranged below the cavity top wall 2.1, and the part of the light guide column 20 extending into the cavity 2 is arranged at the periphery of the heating tube 22; the heat at the outer periphery of the heat pipe 22 is lower than the heat at the middle, so as to avoid the over-temperature of the light guide pillar 20 from being transferred to the LED lamp 18, which affects the service life of the LED lamp 18.

Referring to fig. 14-15, the microwave barbecue machine further comprises a motor linkage shaft 24 cooperatively connected with the microwave stirring motor 5, the motor linkage shaft 24 penetrates through the bottom of the waveguide box 15, one end of the motor linkage shaft 24 penetrating through the waveguide box 15 is connected with a microwave stirring sheet 25, the microwave stirring sheet 25 is provided with a straight strip portion 25.1 and a hook portion 25.2, a shaft connecting hole 25.3 is formed in the straight strip portion 25.1, and the microwave stirring sheet 25 is connected with the motor linkage shaft 24 through the shaft connecting hole 25.3; in the linear direction of the straight strip part 25.1, the linear distance from the outer end of the straight strip part 25.1 to the center of the shaft connecting hole 25.3 is S1, the linear distance from the outer end of the hook part 25.2 to the center of the shaft connecting hole 25.3 is S2, and S1 is greater than S2.

The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and the scope of the invention is to be protected. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A microwave barbecue machine comprises a box body (1) and a shell (1.1) thereof, and a cavity (2) arranged in the shell (1.1), wherein the cavity (2) is provided with a cavity top wall (2.1), a first heat dissipation component, a second heat dissipation component, a magnetron (3), a variable frequency power supply (4), a microwave stirring motor (5) and a waveguide box (15) are arranged above the cavity top wall (2.1), the microwave stirring motor (5) is arranged above the waveguide box (15), the first heat dissipation component is provided with a first exhaust fan (6) and a wind scooper, the second heat dissipation component is provided with a second exhaust fan (7) and an exhaust channel, the microwave barbecue machine further comprises an air inlet (1.3) and an air outlet (8) which are arranged on the microwave barbecue machine, openings are arranged at the front end and the rear end of the wind scooper, the characteristic is that the opening at the tail part of the wind scooper is communicated with the air inlet (1.3), and, the air inlet (1.3), the first exhaust fan (6), the air guide cover and the air outlet (8) are sequentially communicated to form a first heat dissipation channel for dissipating heat of the magnetron (3) and the variable frequency power supply (4), so that external cold air in the box body (1) enters the air guide cover through the air inlet (1.3) and the first exhaust fan (6), flows to the variable frequency power supply (4) and the magnetron (3), and is blown to the air outlet (8) through the first exhaust fan (6); the second exhaust fan (7) is provided with an upper air inlet (7.1) and a lower air inlet (7.2), the microwave stirring motor (5) is close to the upper air inlet (7.1), the lower air inlet (7.2), the exhaust channel and the air outlet (8) are sequentially communicated to form a second heat dissipation channel for assisting heat dissipation of the microwave stirring motor (5), the second heat dissipation assembly is further provided with a cold air inlet (28) communicated with outside air, the cold air inlet (28) is communicated with the exhaust channel, so that outside cold air and hot air sucked by the microwave stirring motor (5) are blown to the air outlet (8) through the second exhaust fan (7), and hot air discharged by the first and second heat dissipation channels is mixed and discharged outside the box body (1) at the inner side of the air outlet (8).

2. The microwave barbecue machine according to claim 1, wherein the wind scooper comprises a front wind scooper upper cover (10) and a rear wind scooper upper cover (11), the front wind scooper upper cover (10) covers the magnetron (3), and the rear wind scooper upper cover (11) covers the variable frequency power supply (4); the tail of back wind guide cover upper cover (11) is equipped with recessed step (11.1), be equipped with step income wind gap (11.2) on recessed step (11.1), step income wind gap (11.2) below is equipped with first exhaust fan (6), shell (1.1) is including back shroud (1.2) and upper cover plate (1.4), air intake (1.3) are established on back shroud (1.2), recessed step (11.1) upwards extends vertical enclosure wall (11.3), the air inlet channel of synthetic intercommunication air intake (1.3) is enclosed to back shroud (1.2), upper cover plate (1.4) three.

3. The microwave barbecue machine according to claim 1, wherein the second heat dissipation assembly is further provided with an exhaust hood (12), an upper air guide hood (13) positioned below the exhaust hood (12), and a lower air guide hood (14) positioned below the upper air guide hood (13), an exhaust passage is formed between the exhaust hood (12) and the upper air guide hood (13), and the second exhaust fan (7) is positioned in the exhaust passage; go up air guide cover (13) and air guide cover (14) down and all be equipped with breach (13.1, 14.1) that run through from top to bottom, waveguide box (15) are established in breach (13.1, 14.1) of last air guide cover (13) and air guide cover (14) down, waveguide box (15) top is equipped with thermal-insulated cover (16) that are used for covering waveguide box (15), thermal-insulated cover (16) and last air guide cover (13) are connected, thermal-insulated cover (16) top is equipped with motor mount (17), microwave agitator motor (5) are fixed on motor mount (17).

4. The microwave barbecue machine according to claim 1, characterized in that the cavity top wall (2.1) is provided with a mounting boss (2.2), the waveguide box (15) is transversely arranged on the top side of the cavity (2), the waveguide box (15) is provided with a wave outlet and a wave inlet, one end of the wave outlet is fixedly connected with the mounting boss (2.2), one end of the wave inlet is connected with the magnetron (3), the wind scooper comprises a wind scooper base (9) positioned below the magnetron (3), the magnetron (3) is suspended above the cavity top wall (2.1), and the lower part of the magnetron (3) is supported by the wind scooper base (9).

5. The microwave barbecue machine according to claim 1, characterized by further comprising an LED illumination assembly of the illumination cavity (2), wherein the LED illumination assembly comprises an LED lamp (18), an LED lamp radiator (19) and a light guide column (20), the second heat dissipation assembly is further provided with a fan cover (21) for covering the second exhaust fan (7), the fan cover (21) is made of metal, the periphery of the fan cover is integrally bent to form a folded edge (21.1), and the LED lamp radiator (19) is tightly attached to the folded edge (21.1); the bottom of the LED lamp radiator (19) is provided with a fixing piece (19.1) for fixing the light guide column (20), and the light guide column (20) is fixed on the fixing piece (19.1) of the LED lamp radiator (19); the middle of the top end of the light guide column (20) is provided with a pit (20.2), and the LED lamp (18) extends into the pit (20.2).

6. The microwave barbecue machine according to claim 5, characterized in that the second heat dissipation component is provided with an exhaust hood (12), an upper air guide hood (13) and a lower air guide hood (14) from top to bottom, an exhaust passage is formed between the exhaust hood (12) and the upper air guide hood (13), an air inlet passage communicated with the exhaust passage is formed between the upper air guide hood (13) and the lower air guide hood (14), the air inlet passage is provided with more than one cold air inlet (28), and the light guide column (20) penetrates through the exhaust passage and the air inlet passage from top to bottom and extends into the cavity (2); a heating tube (22) is arranged below the top wall (2.1) of the cavity, and the part of the light guide column (20) extending into the cavity (2) is arranged at the periphery of the heating tube (22); in addition, the bottom end of the light guide column (20) is provided with a chamfer (20.1) facing the middle direction of the cavity (2).

7. The microwave barbecue machine according to claim 1, characterized in that a heating pipe (22) is arranged at the top of the cavity (2), a microwave injection port is arranged in the middle of the top wall (2.1) of the cavity, a heat insulation plate (23) for transmitting microwave is covered under the microwave injection port, the heat insulation plate (23) is arranged above the heating pipe (22), and an upward bulge (23.1) is arranged in the middle of the heat insulation plate (23).

8. The microwave barbecue machine according to claim 1, further comprising a motor linkage shaft (24) which is connected with the microwave stirring motor (5) in a matching manner, wherein the motor linkage shaft (24) penetrates through the bottom of the waveguide box (15), one end of the motor linkage shaft (24) penetrating through the waveguide box (15) is connected with a microwave stirring sheet (25), the microwave stirring sheet (25) is provided with a straight strip portion (25.1) and a hook portion (25.2), the straight strip portion (25.1) is provided with a shaft connecting hole (25.3), and the microwave stirring sheet (25) is connected with the motor linkage shaft (24) through the shaft connecting hole (25.3); in the linear direction of the straight strip part (25.1), the linear distance from the outer end of the straight strip part (25.1) to the center of the shaft connecting hole (25.3) is S1, the linear distance from the outer end of the hook part (25.2) to the center of the shaft connecting hole (25.3) is S2, and S1 is more than S2.

9. The microwave barbecue machine according to claim 1, wherein the front portion of the second heat dissipation assembly is provided with an opening, the front opening of the air guiding cover is communicated with the front opening of the second heat dissipation assembly, and the two front openings together form an air outlet (8) of the microwave barbecue machine, the microwave barbecue machine further comprises a door body (26) and a control panel (27) positioned above the door body (26), the door body (26) and the control panel (27) are arranged vertically, and the air outlet (8) is positioned between the door body (26) and the control panel (27).