CN106322454A - Drawer type microwave oven - Google Patents

Abstract

The invention discloses a drawer-type microwave oven, which comprises a casing, a cooking cavity, a vortex fan, electrical components and a drawer. The cooking cavity is arranged in the casing and a cooking chamber is defined in the cooking cavity. There is an air outlet and the lower part is provided with an air inlet, and the outer wall surface of the cooking cavity and the inner wall surface of the shell define air passages respectively connected with the air inlet and the air outlet; the vortex fan is installed on the outer top wall of the cooking chamber and is located In the air duct, the vortex fan has a first air supply port and a second air supply port, and the air duct includes a first air outlet channel communicating with the first air supply port and the air outlet and a second air outlet channel communicating with the second air supply port, the cooking chamber and the air outlet Channel: The electric device is installed on the outer top wall of the cooking cavity and includes a transformer and a magnetron. The transformer is arranged in the first air outlet channel, and the magnetron is arranged in the second air outlet channel. The drawer-type microwave oven according to the invention has the advantages of good heat dissipation performance and long service life.

Description

drawer microwave oven

technical field

The invention relates to the technical field of household appliances, in particular to a drawer-type microwave oven.

Background technique

For microwave cooking devices such as drawer-type microwave ovens, electrical components generate a large amount of heat during operation, and air ducts are required to cool the electrical components. In the prior art, functional electrical components such as fan components, magnetrons, and transformers are installed behind the cooking cavity, and the cooling air duct is also arranged behind the cooking cavity, while the air outlet can generally only be located in front of the cooking cavity. As a result, the heat dissipation performance of the drawer microwave oven is poor, which affects the service life of the drawer microwave oven.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a drawer-type microwave oven, which has the advantages of good heat dissipation performance and long service life.

The drawer-type microwave oven according to the embodiment of the present invention includes: a shell; a cooking cavity, the cooking cavity is arranged in the shell and a cooking chamber is defined in the cooking cavity, the upper part of the front wall of the cooking cavity An air outlet is provided and an air inlet is provided at the lower part, and an air duct communicating with the air inlet and the air outlet is defined between the outer wall surface of the cooking cavity and the inner wall surface of the housing; the vortex fan, the The vortex fan is installed on the outer top wall of the cooking chamber and is located in the air channel, the vortex fan has a first air supply port and a second air supply port, and the air channel includes a channel connecting the first air supply port and the air channel. The first air outlet channel of the air outlet and the second air outlet channel connecting the second air supply port, the cooking chamber and the air outlet; electrical components, the electrical components are installed on the outer top wall of the cooking cavity and includes a transformer and a magnetron, the transformer is arranged in the first air outlet channel, the magnetron is arranged in the second air outlet channel; a drawer, the drawer can be pushed and pulled to be installed on the at least one of the housing and the cooking cavity to open and close the cooking chamber.

According to the drawer-type microwave oven of the embodiment of the present invention, the air outlet is arranged on the upper part of the front wall of the cooking cavity, and the vortex fan and electrical components are installed on the outer top wall of the cooking cavity, and the transformer is arranged on the first outlet. In the air channel, the magnetron is arranged in the second air outlet channel, so that the wind flowing from the first air supply port cools the transformer and the wind flowing from the second air supply port cools the magnetron, shortening the flow path of hot air , Accelerate the cooling speed of electrical components, improve the heat dissipation performance, and prolong the service life of the drawer microwave oven.

In addition, the drawer-type microwave oven according to the embodiment of the present invention also has the following additional technical features:

According to some embodiments of the present invention, the air duct further includes a bottom air intake duct, a side air duct, a rear air duct and a suction duct, the bottom air intake duct is located below the cooking chamber and is respectively connected to the The air inlet, the side air duct and the rear air duct are connected, the side air duct is located at the side of the cooking chamber and communicates with the suction duct, and the rear air duct is located at the side of the cooking chamber. The rear part of the cooking chamber is in communication with the air suction channel, and the vortex fan is located in the air suction channel.

According to some embodiments of the present invention, the cooking cavity is provided with a cavity air inlet and a cavity air outlet, and the second air outlet channel includes a first air guide section and a second air guide section, and the first air guide section The air section is located above the cooking chamber and communicates with the second air supply port and the air inlet of the cavity respectively, and the second air guide section is located above the cooking chamber and is respectively connected with the air outlet of the cavity It communicates with the air outlet, and the magnetron is arranged in the first air guide section.

Optionally, the vortex fan has a first air suction port communicated with the first air supply port and a second air suction port communicated with the second air supply port, the first air suction port is connected to the rear air duct and the second air suction port communicates with the side air duct.

In some specific embodiments of the present invention, the electrical device further includes a computer board assembly, a filter board, a high-voltage capacitor, and a stirring motor, and the computer board assembly is arranged in the air suction channel and adjacent to the second air suction port It is provided that the filter plate is arranged in the air suction channel and adjacent to the first air suction port, and the high voltage capacitor and the stirring motor are arranged in the first air outlet channel.

In some embodiments of the present invention, a windshield for separating the suction channel from the first air outlet channel and the second air outlet channel is provided in the air duct, and the windshield is installed It is on the outer top wall of the cooking chamber and extends upward to the inner wall of the casing.

In an optional embodiment of the present invention, the top plate of the cooking cavity extends to the two sides of the cooking chamber and the rear of the cooking chamber to the inner wall surface of the shell respectively, and the top plate of the cooking cavity A first ventilation hole communicating with the side air channel and the suction channel and a second ventilation hole communicating with the rear air channel and the suction channel are provided.

Advantageously, the rear plate of the cooking cavity extends to the inner wall surface of the shell respectively to both sides of the cooking chamber and below the cooking chamber, and the rear plate of the cooking cavity is provided with a The bottom air intake channel and the third vent hole in the rear air channel.

Optionally, the second air outlet channel is provided with a first air guide cover and a second air guide cover for defining the first air guide section, and the first air guide cover is installed on the cooking chamber. The outer top wall is connected with the second air supply port, the second wind guide is installed on the outer top wall of the cooking chamber and communicated with the air inlet of the cavity, and the magnetron is arranged on the Between the first wind guide cover and the second wind guide cover.

Optionally, the drawer-type microwave oven further includes: a secondary electrical device, and the secondary electrical device is arranged in the side air duct.

Further, the secondary electrical device includes an interlock switch, a micro switch and an oven lamp.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

FIG. 1 is a perspective view of a drawer-type microwave oven according to an embodiment of the present invention;

Fig. 2 is a schematic structural view of a drawer microwave oven according to an embodiment of the present invention;

Fig. 3 is a schematic structural view of a drawer-type microwave oven according to an embodiment of the present invention;

Fig. 4 is a schematic structural view of a drawer microwave oven according to an embodiment of the present invention;

Fig. 5 is a schematic structural view of a drawer-type microwave oven according to an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a drawer microwave oven according to an embodiment of the present invention.

Reference signs:

drawer microwave oven 1,

First air outlet channel 10, second air outlet channel 20, first air guide section 21, second air guide section 22, bottom air inlet channel 31, side air channel 32, rear air channel 33, suction channel 34 , the windshield 30, the first wind deflector 40, the second wind deflector 50, the third wind deflector 60, the fourth wind deflector 70,

housing 100,

Cooking cavity 200, air outlet 201, air inlet 202, first ventilation hole 203, second ventilation hole 204, third ventilation hole 205, cavity air inlet 206, cavity air outlet 207,

Electric device 300, computer board assembly 310, filter board 320, transformer 330, high voltage capacitor 340, stirring motor 350, magnetron 360,

Drawer 400, panel 410, handle 411, door hook 412, drawer body 420, rail connecting plate 421,

Vortex fan 500, first air suction port 501, second air suction port 502, first air supply port 503, second air supply port 504,

Secondary electrical device 600 , interlock switch 610 , micro switch 620 , oven lamp 630 .

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

This application is based on the inventor's discovery and recognition of the following facts and problems:

For microwave cooking devices such as drawer-type microwave ovens, electrical components generate a large amount of heat during operation, and air ducts are required to cool the electrical components. In the prior art, functional electrical components such as a fan assembly, a magnetron, and a transformer are installed behind the cooking cavity, and the cooling air duct is also arranged behind the cooking cavity.

Because the drawer microwave oven is usually installed in the cabinet, and the outer cover of the built-in product needs to be airtight due to safety regulations, so the air outlet can only be set in front of the cooking cavity. The air outlet is set in front of the cooking cavity, resulting in a long air duct for the hot air. The hot air will stay in the drawer microwave oven for a long time before being discharged from the air outlet. Absorbed again, thereby reducing the heat dissipation performance of the entire drawer microwave oven, affecting the service life of the drawer microwave oven.

Therefore, the present invention proposes a drawer-type microwave oven 1 with good heat dissipation performance and long service life.

A drawer-type microwave oven 1 according to an embodiment of the present invention will be described below with reference to FIGS. 1-6 .

As shown in FIGS. 1-6 , a drawer-type microwave oven 1 according to an embodiment of the present invention includes a casing 100 , a cooking cavity 200 , a vortex fan 500 , electrical components 300 and a drawer 400 .

Specifically, the cooking cavity 200 is arranged in the shell 100, and a cooking chamber (not shown) is defined in the cooking cavity 200, and an air outlet 201 is provided on the top of the front wall of the cooking cavity 200, and the cooking cavity The lower part of the front wall of the body 200 is provided with an air inlet 202, and an air duct is defined between the outer wall of the cooking cavity 200 and the inner wall of the casing 100, and the air duct communicates with the air inlet 202 and the air outlet 201 respectively.

The vortex fan 500 is installed on the outer top wall of the cooking chamber, and the vortex fan 500 is located in the air duct. The vortex fan 500 has a first air supply port 503 and a second air supply port 504, and the air duct includes a first air outlet channel 10 and a second air outlet. The air channel 20 , the first air outlet channel 10 communicates with the first air outlet 503 and the air outlet 201 , and the second air outlet channel 20 communicates with the second air outlet 504 , the cooking chamber and the air outlet 201 .

The electrical device 300 is installed on the outer top wall of the cooking cavity 200, and the electrical device 300 includes a transformer 30 and a magnetron 360. The transformer 330 is arranged in the first air outlet channel 10, and the magnetron 360 is arranged in the second air outlet. Inside channel 20. The drawer 400 can be installed on at least one of the casing 100 and the cooking cavity 200 in a push-pull manner to open and close the cooking chamber, here, the drawer 400 can be installed on the casing 100 or the cooking cavity 200, or the drawer 400 can be installed separately on the housing 100 and the cooking cavity 200 .

According to the drawer-type microwave oven 1 of the embodiment of the present invention, the air outlet 201 is arranged on the upper part of the front wall of the cooking cavity 200, and the vortex fan 500 and the electrical device 300 are installed on the outer top wall of the cooking cavity 200, and The transformer 330 is arranged in the first air outlet channel 10, and the magnetron 360 is arranged in the second air outlet channel 20, so that the electrical device 300 is arranged at a position adjacent to the air outlet 201, and the wind flowing from the first air outlet 503 After cooling the transformer 330, it is discharged from the air outlet 201, and the wind flowing from the second air supply port 504 cools the magnetron 360 and enters the cooking chamber, takes away the cooking fume and water vapor, and is then discharged from the air outlet 201, thereby shortening the cooking time. The flow path of the hot air accelerates the cooling speed of the electrical device 300 , improves the heat dissipation performance, and prolongs the service life of the drawer-type microwave oven 1 .

According to some embodiments of the present invention, as shown in FIGS. 4-6 , the air duct further includes a bottom air intake duct 31 , a side air duct 32 , a rear air duct 33 and an air suction duct 34 . The bottom air intake channel 31 is located below the cooking chamber, and the bottom air intake channel 31 communicates with the air inlet 202 , the side air channel 32 and the rear air channel 33 respectively. The side air channel 32 is located at the side of the cooking chamber, and the side air channel 32 communicates with the suction channel 34 . The rear air channel 33 is located at the rear of the cooking chamber, and the rear air channel 33 communicates with the air suction channel 34 , and the vortex fan is located in the air suction channel 34 .

Thus, the vortex fan 500 draws air from the lower part of the front wall of the cooking cavity 200 into the air duct, and the air flows through the bottom of the cooking chamber, the side of the cooking chamber and the rear of the cooking chamber respectively and enters the vortex fan 500, and then a part Air flows through the top of the cooking chamber from the first air supply port 503, cools the transformer 330, and is discharged from the air outlet 201, and another part of air flows through the top of the cooking chamber from the second air supply port 504 and cools the magnetron 360, and then enters the cooking chamber. room, and finally discharged from the air outlet 201.

Optionally, as shown in FIG. 2 , FIG. 4 and FIG. 5 , the vortex fan 500 has a first air suction port 501 and a second air suction port 502 , and the first air suction port 501 is connected to the first air supply port 503 and the rear air duct 33 respectively. The second air suction port 502 communicates with the second air supply port 504 and the side air channel 32 respectively.

Thus, the cold air flowing into the suction passage 34 from the side air passage 32 and the rear air passage 33 is divided into two paths, the first cold air enters the first air outlet passage 10 through the first air supply port 503 and cools the transformer 330, Then the drawer-type microwave oven 1 is discharged from the air outlet 201, and the second road cold wind enters the second air outlet channel 20 by the second air supply port 504, enters the cooking chamber after cooling the magnetron 360 and takes away the cooking fume and water vapor in the cooking chamber, and then out of the cooking chamber, and finally through the air outlet 201 out of the drawer-type microwave oven 1 .

In some specific embodiments of the present invention, as shown in Fig. 2 and Fig. 5, electrical device 300 also comprises computer board assembly 310, filter board 320, high-voltage capacitor 340 and stirring motor 350, and computer board assembly 310 is located at the suction channel 34, and the computer board assembly 310 is set adjacent to the second air suction port 502, the filter plate 320 is set in the air suction channel 34, and the filter plate 320 is set adjacent to the first air suction port 501, the high-voltage capacitor 340 and the stirring motor 350 are set in the first In the air outlet channel 10.

In this way, after cooling the computer board assembly 310, the cold wind blown from the side air channel 32 is blown out by the second air outlet 504 to cool the magnetron 360, and then enters the cooking chamber; the cold air blown from the rear air channel 33 cools the filter After the plate 320 , it is blown out from the first air outlet 503 to cool the high-voltage capacitor 340 and the stirring motor 350 , and finally the hot air formed is discharged from the drawer-type microwave oven 1 through the air outlet 201 .

It can be understood that the electrical device 300 may also include a high-voltage diode (not shown in the figure), and the high-voltage diode is arranged in the first air outlet channel 10, and after the cold air blown from the rear air channel 33 cools the filter plate 320, the filter plate 320 is cooled by the first The air outlet 503 blows out and cools the high voltage diode.

In some embodiments of the present invention, as shown in Fig. 4-Fig. The inner wall surface of the casing 100, so that the windshield 30 can separate the air suction channel 34 and the first air outlet channel 10, and separate the air suction channel 34 and the second air outlet channel 20, that is, the windshield 30 to the vortex fan 500 The air inlet channel and the air outlet channel are isolated to isolate the cold air area and the hot air area, and prevent the hot air from being sucked back into the vortex fan 500 .

In an optional embodiment of the present invention, as shown in FIG. 2 , the top plate of the cooking cavity 200 extends to both sides of the cooking chamber (for example, the left and right sides shown in the figure) and the rear of the cooking chamber to The inner wall surface of the shell 100 and the top plate of the cooking cavity 200 are provided with a first ventilation hole 203 and a second ventilation hole 204, the first ventilation hole 203 communicates with the side air channel 32 and the suction channel 34, and the second ventilation hole 204 communicates Rear air channel 33 and air suction channel 34. In this way, cold air enters the suction channel 34 through the first ventilation hole 203 and the second ventilation hole 204 respectively.

Advantageously, as shown in FIGS. 2 and 6 , the rear plate of the cooking cavity 200 extends to the sides of the cooking chamber (for example, the left and right sides shown in the figures) and the bottom of the cooking chamber to the bottom of the housing 100 respectively. On the inner wall surface, the rear panel of the cooking cavity 200 is provided with a third ventilation hole 205, and the third ventilation hole 205 communicates with the bottom air inlet passage 31 and the rear air passage 33, so that the cold wind in the bottom air inlet passage 31 can be passed through the second air inlet passage. Three ventilation holes 205 enter the rear air duct 33 .

According to some embodiments of the present invention, as shown in FIG. 2 , FIG. 5 and FIG. 6 , the cooking cavity is provided with a cavity air inlet 206 and a cavity air outlet 207 , and the second air outlet channel 20 includes a first air guide section 21 and the second air guide section 22, the first air guide section 21 is located above the cooking chamber, and the first air guide section 21 communicates with the second air supply port 504 and the cavity air inlet 206 respectively, and the second air guide section 22 is located at the cooking chamber. Above the chamber, and the second air guide section 22 communicates with the cavity air outlet 207 and the air outlet 201 respectively, and the magnetron 360 is arranged in the first air guide section 21 . Thus, the wind blown from the second air outlet 504 flows over the cooking chamber, cools the magnetron 360, enters the cooking chamber through the air inlet 206 of the cavity, and then flows out from the side of the cooking chamber through the air outlet 207 of the cavity. Take the oil fume and water vapor, and finally discharge from the air outlet 201.

Optionally, as shown in FIGS. 2 and 5 , the second air outlet channel 20 is provided with a first wind guide 40 and a second wind guide 50 , and the first wind guide 40 is installed on the outer top wall of the cooking chamber. , and the first air guide cover 40 communicates with the second air outlet 504, the second air guide cover 50 is installed on the outer top wall of the cooking chamber, and the second air guide cover 50 passes through the cavity on the top plate of the cooking cavity 200 The air inlet 206 communicates with the cooking chamber, and the magnetron 360 is arranged between the first wind guide 40 and the second wind guide 50, so that the first wind guide 40 and the second wind guide 50 define the first air guide. Wind section 21, so that the first air guide cover 40 can completely guide the wind blown out by the second air supply port 504 to the magnetron 360, to cool the magnetron 360, after the magnetron 360, in the second air guide cover 50 Under the action of guidance, the air enters into the cooking chamber through the air inlet 206 of the cavity.

In some embodiments of the present invention, as shown in FIG. 2 , FIG. 5 and FIG. 6 , the second air outlet channel 20 is also provided with a third air guide cover 60 and a fourth air guide cover 70 , and the cavity air outlet 207 is provided with On the right wall of the cooking cabinet. The third air guide cover 60 is installed on the right outer wall surface of the cooking chamber, and the cavity air outlet 207 communicates with the cooking chamber and the third air guide cover 60 . The fourth air guide cover 70 is installed on the outer top wall of the cooking chamber, and the fourth air guide cover 70 communicates with the third air guide cover 60 and the air outlet 201 respectively. In this way, the third air guide 60 and the fourth air guide 70 define the second air guide section 22, the third air guide 60 guides the hot air in the cooking chamber into the fourth air guide 70, and finally the fourth air guide The cover 70 guides the hot air out of the drawer microwave oven 1 .

It should be noted that the hot air in the cooking chamber is not limited to be discharged from the upper part of the front wall of the cooking cavity 200 , and the hot air can also be discharged from the lower part of the front wall of the cooking cavity 200 . That is to say, the positions of the third wind guide cover 60 and the fourth wind guide cover 70 are not necessarily to lead hot air from the upper part of the cooking cavity 200, the third wind guide cover 60 and the fourth wind guide cover 70 can also be installed on other positions of the cooking cavity 200 , so that the hot air is guided from other positions of the cooking cavity 200 , for example, from air holes at the lower part of the front wall of the cooking cavity 200 .

Optionally, as shown in FIG. 5 , the drawer microwave oven 1 further includes a secondary electrical device 600 , and the secondary electrical device 600 is arranged in the side air duct 32 . For example, the secondary electrical device 600 includes an interlock switch 610, a micro switch 620 and an oven lamp 630, so that the interlock switch 610, the micro switch 620 and the oven lamp 630 can be cooled when cold wind flows in the side air duct 32, Therefore, the heat dissipation performance is better, which is beneficial to prolonging the service life of the drawer microwave oven 1 . Wherein, the secondary electric device 600 can also be respectively arranged on the left side and the right side of the cooking chamber.

The drawer-type microwave oven 1 according to a specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the following description is only illustrative, and should not be construed as a limitation of the present invention.

As shown in FIGS. 1-6 , a drawer-type microwave oven 1 according to an embodiment of the present invention includes a housing 100 , a cooking cavity 200 , an electrical device 300 , a drawer 400 , a vortex fan 500 and a secondary electrical device 600 .

Specifically, the cooking cavity 200 is disposed in the casing 100, and a cooking chamber (not shown in the figure) is defined in the cooking cavity 200 . The upper part of the front wall of the cooking cavity 200 is provided with a louvered air outlet 201, and the lower part of the front wall of the cooking cavity 200 is provided with a louvered air inlet 202, and the top plate of the cooking cavity 200 faces to the left side of the cooking chamber respectively. , the right side of the cooking chamber and the rear of the cooking chamber extend to the inner wall of the casing 100, and the rear plate of the cooking cavity 200 extends to the inside of the casing 100 to the left side of the cooking chamber, the right side of the cooking chamber and the bottom of the cooking chamber respectively. On the wall, the top plate of the cooking cavity 200 is provided with a plurality of first ventilation holes 203, the second ventilation holes 204 and a plurality of cavity air inlets 206, and the rear panel of the cooking cavity 200 is provided with a plurality of third ventilation holes 205 . Wherein, the left side wall, the right side wall and the bottom wall of the cooking cavity 200 are integrally formed U-shaped plates, and the right side wall of the U-shaped plate is provided with a plurality of cavity air outlets 207 .

An air passage is defined between the outer wall of the cooking cavity 200 and the inner wall of the housing 100, and the air passage includes a first air outlet passage 10, a second air outlet passage 20, a bottom air inlet passage 31, and a side air passage communicated with each other. 32, the rear air channel 33 and the suction channel 34. The bottom air intake channel 31 is located below the cooking chamber, and the bottom air intake channel 31 communicates with the air inlet 202 and the side air channel 32 respectively, and the bottom air intake channel 31 communicates with the rear air channel 33 through the third ventilation hole 205 . The side air passages 32 are located on the left and right sides of the cooking chamber, and the side air passages 32 communicate with the suction passage 34 through the first ventilation holes 203 . The rear air passage 33 is located at the rear of the cooking chamber, and the second ventilation hole 204 communicates with the rear air passage 33 and the suction passage 34 .

The vortex fan 500 is located in the air suction passage 34, the vortex fan 500 has a first air suction port 501, a first air supply port 503, a second air suction port 502 and a second air supply port 504, and the first air suction port 501 communicates with the first air supply port 503 Furthermore, the second air hole 204 communicates with the rear air duct 33 , and the second air suction port 502 communicates with the second air supply port 504 and communicates with the side air duct 32 through the first air hole 203 .

The electrical device 300 includes a computer board assembly 310, a filter board 320, a transformer 330, a high-voltage capacitor 340, a high-voltage diode (not shown), a stirring motor 350 and a magnetron 360, and the computer board assembly 310 and the filter board 320 are respectively located on In the air suction channel 34 , the computer board assembly 310 is disposed adjacent to the second air suction port 502 , and the filter board 320 is disposed adjacent to the first air suction port 501 . The first air outlet channel 10 communicates with the first air outlet 503 and the air outlet 201 respectively. The transformer 330, the high voltage capacitor 340, the high voltage diode and the stirring motor 350 are arranged in the first air outlet channel 10, and the high voltage diode is installed on the high voltage capacitor.

The second air outlet channel 20 is provided with a first wind guide cover 40, a second wind guide cover 50, a third wind guide cover 60 and a fourth wind guide cover 70, the first wind guide cover 40, the second wind guide cover 50 and the second wind guide cover 50. The fourth air guide cover 70 is respectively installed on the outer top wall surface of the cooking chamber, and the third air guide cover 60 is installed on the right outer wall surface of the cooking chamber. The first air guide 40 communicates with the second air supply port 504, the second air guide 50 communicates with the cooking chamber through the cavity air inlet 206, and the magnetron 360 is arranged on the first air guide 40 and the second air guide 50. Between, the third air guide cover 60 communicates with the cooking chamber through the cavity air outlet 207, and the fourth air guide cover 70 communicates with the third air guide cover 60 and the air outlet 201 respectively, so that the first air guide cover 40 and the second air guide cover 40 communicate with the cooking chamber. The second air guide cover 50 defines the first air guide section 21 , and the third air guide cover 60 and the fourth air guide cover 70 define the second air guide section 22 .

A windshield 30 is provided in the air duct, and the windshield 30 is installed on the outer top wall of the cooking chamber. The windshield 30 separates the air suction channel 34 from the first air outlet channel 10, and separates the air suction channel 34 from the first air outlet channel. Air guide section 21.

The drawer 400 comprises a panel 410 and a drawer body 420, the front wall of the panel 410 is provided with a handle 411, the rear wall of the panel 410 is provided with a door hook 412, the inner wall of the cooking cavity 200 is provided with guide rails, and the drawer body 420 is provided with a There is a guide rail connecting plate 421 slidingly fitted with the guide rail. The secondary electrical device 600 is arranged in the side air duct 32, and the secondary electrical device 600 includes an interlock switch 610, a micro switch 620 and an oven lamp 630, and the interlock switch 610 and the micro switch 620 are respectively two, two Two interlock switches 610 are respectively installed on the left side and the right side of the cooking chamber, two micro switches 620 are respectively installed on the left side and the right side of the cooking chamber, and the stove lamp is installed on the right side of the cooking chamber.

The cooling and heat dissipation process of the drawer-type microwave oven 1 according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

When the vortex fan 500 is working, the cold wind is sucked into the bottom air intake channel 31 from the bottom of the front wall of the cooking cavity 200, and flows through the bottom of the cooking cavity 200, and then, a part of the cold wind flows from the left side of the cooking cavity 200 respectively. The air duct 32 and the side air duct 32 on the right side flow upwards to cool the secondary electrical device 600 installed on the side wall of the cooking cavity 200, and cool the computer board assembly 310 through the first ventilation hole 203, and then enter the vortex fan The second air intake 502 of 500; another part of the cold wind enters the rear space of the cooking cavity 20 from the third ventilation hole 205, and then enters the first air suction port 501 of the vortex fan 500 through the second ventilation hole 204, and cools the air installed on the vortex fan at the same time. The filter plate 320 at the first air suction port 501 of 500. In addition, when the vortex fan 500 draws cold air, it can also take away a small amount of heat emitted by the computer board assembly 310 and the filter board 320 . The flow path of the cold air is shown by the arrows in FIG. 4 .

After the cold air is blown out from the vortex fan 500, it will pass through two flow paths. The first cold air enters the first air outlet channel 10 from the first air supply port 503 to cool the transformer 330, high-voltage capacitor 340, high-voltage diode and stirring motor 350, and then discharges the drawer-type microwave oven 1 from the air outlet 201. The first cold air The flow path of the flow path is shown as the arrow in Figure 5; the first air guide cover 40 completely guides the second road cold wind blown from the second air supply port 504 to the magnetron 360, and after cooling the magnetron 360, the second road cold wind Under the guiding action of the second wind guide cover 50, it enters the cooking chamber from the air inlet 206 of the cavity, and then discharges from the air outlet 207 of the cavity on the right side of the U-shaped plate, taking away the cooking fume and water vapor generated when cooking food, After entering the third air guide hood 60, the hot air finally enters the fourth air guide cover 70, and is discharged from the air outlet 201 to the outside of the drawer-type microwave oven 1. The flow path of the second cold air is shown by the arrow in FIG. 6 .

To sum up, according to the drawer-type microwave oven 1 of the embodiment of the present invention, the air duct is optimized, and the electrical device 300 that generates heat is arranged near the air outlet 201, so that the hot air duct is the shortest and the components are cooled faster, thereby Better heat dissipation and longer service life.

Other configurations and operations of the drawer microwave oven 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; either mechanical or electrical. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "specific embodiments," "alternative embodiments," "example," or "some examples" are intended to mean A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (11)

1. A drawer microwave oven, characterized in that it comprises: shell; A cooking cavity, the cooking cavity is arranged in the shell and a cooking chamber is defined in the cooking cavity, the upper part of the front wall of the cooking cavity is provided with an air outlet and the lower part is provided with an air inlet, the cooking cavity An air duct communicating with the air inlet and the air outlet is defined between the outer wall of the cavity and the inner wall of the housing; A vortex fan, the vortex fan is installed on the outer top wall of the cooking chamber and is located in the air duct, the vortex fan has a first air supply port and a second air supply port, and the air duct includes a The first air outlet passage between the air supply port and the air outlet, and the second air outlet passage connecting the second air supply port, the cooking chamber and the air outlet; The electrical device is installed on the outer top wall of the cooking cavity and includes a transformer and a magnetron, the transformer is arranged in the first air outlet channel, and the magnetron is arranged in the In the second air outlet channel; A drawer is pushably and pullably mounted on at least one of the housing and the cooking cavity to open and close the cooking chamber. 2. The drawer-type microwave oven according to claim 1, wherein the air duct further comprises a bottom air intake duct, a side air duct, a rear air duct and a suction duct, and the bottom air intake duct is located at the the bottom of the cooking chamber and communicate with the air inlet, the side air duct and the rear air duct respectively, the side air duct is located at the side of the cooking chamber and communicates with the suction channel , the rear air duct is located at the rear of the cooking chamber and communicates with the air suction channel, and the vortex fan is located in the air suction channel. 3. The drawer-type microwave oven according to claim 1, wherein the cooking cavity is provided with a cavity air inlet and a cavity air outlet, and the second air outlet channel includes a first air guide section and a second air guide section. An air guide section, the first air guide section is located above the cooking chamber and communicates with the second air supply port and the cavity air inlet respectively, and the second air guide section is located above the cooking chamber And communicate with the air outlet of the cavity and the air outlet respectively, and the magnetron is arranged in the first air guiding section. 4. The drawer-type microwave oven according to claim 2, wherein the vortex fan has a first air suction port communicated with the first air supply port and a second air suction port communicated with the second air supply port, The first air suction port communicates with the rear air duct, and the second air suction port communicates with the side air duct. 5. The drawer-type microwave oven according to claim 4, wherein the electrical device further comprises a computer board assembly, a filter board, a high-voltage capacitor and a stirring motor, and the computer board assembly is arranged in the air suction channel and Set adjacent to the second air suction port, the filter plate is set in the air suction channel and adjacent to the first air suction port, the high voltage capacitor and the stirring motor are set in the first air outlet channel . 6. The drawer-type microwave oven according to claim 2, wherein a windshield for separating the suction channel from the first air outlet channel and the second air outlet channel is provided in the air channel. The windshield is installed on the outer top wall of the cooking chamber and extends upward to the inner wall of the casing. 7. The drawer-type microwave oven according to claim 2, characterized in that, the top plate of the cooking cavity extends to the two sides of the cooking chamber and the rear of the cooking chamber to the inner wall surface of the shell respectively, so that The top plate of the cooking cavity is provided with a first ventilation hole communicating with the side air channel and the suction channel and a second ventilation hole communicating with the rear air channel and the suction channel. 8. The drawer-type microwave oven according to claim 2, characterized in that, the rear plate of the cooking cavity extends to both sides of the cooking chamber and the bottom of the cooking chamber to the inner wall surface of the casing, The rear panel of the cooking cavity is provided with a third ventilation hole communicating with the bottom air inlet channel and the rear air channel. 9. The drawer-type microwave oven according to claim 3, wherein the second air outlet channel is provided with a first air guide cover and a second air guide cover for defining the first air guide section, so The first air guide cover is installed on the outer top wall of the cooking chamber and communicates with the second air supply port, and the second air guide cover is installed on the outer top wall of the cooking chamber and communicates with the cavity The body air inlet is connected, and the magnetron is arranged between the first wind guide cover and the second wind guide cover. 10. The drawer-type microwave oven according to claim 2, further comprising: A secondary electrical device is arranged in the side air duct. 11. The drawer-type microwave oven according to claim 10, wherein the secondary electrical components include an interlock switch, a micro switch and an oven lamp.