CN206300225U - drawer microwave oven - Google Patents

Abstract

The utility model discloses a kind of drawer-type microwave oven, including：Shell, the bottom of the rear wall of shell is provided with air inlet；Culinary art cavity, cooks the lower air outlet for being provided with air outlet of the antetheca of cavity, and exhaust passage is limited between the outside wall surface and the internal face of shell of cooking cavity；Vortex fan, vortex fan is arranged on the outer top wall surface of culinary art cavity and in air channel, and vortex fan has the first air outlet and the second air outlet；Electrical part, electrical part is arranged on the outer top wall surface of culinary art cavity and including transformer and magnetron, and transformer is located in the first air-out passage, and magnetron is located in the second air-out passage；Hot air convection component, hot air convection component is arranged on the outer rear surface of culinary art cavity and in air channel.Drawer.Hot air convection function is integrated with according to drawer-type microwave oven of the present utility model, and the heat that hot air convection is produced can be avoided to accelerate electrical part aging, there is long service life, good heat dissipation effect, safe.

Description

drawer microwave oven

technical field

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

Background technique

In the embedded microwave oven with hot air convection function in the related art, its hot air convection components, magnetrons and transformers will generate a lot of heat when they work, and the heat interacts to accelerate the aging of parts, such as

When the hot air convection component is working, the heat generated will affect the transformer and the magnetron, accelerate the aging speed of the transformer and the magnetron, and reduce the service life. Moreover, the hot air generated by the hot air convection component is finally discharged into the cabinet, which poses a safety hazard, and the hot air is sucked again for cooling, affecting the cooling effect.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. For this reason, the utility model proposes a drawer-type microwave oven. The drawer-type microwave oven is integrated with a hot air convection function, and can avoid the heat generated by the hot air convection from accelerating the aging of electrical components. It has the advantages of long service life, good heat dissipation effect, and high safety. .

In order to achieve the above object, the utility model proposes a drawer type microwave oven. The drawer type microwave oven comprises: a casing, the lower part of the rear wall of the casing is provided with an air inlet; A cooking chamber is defined in the casing and inside the cooking cavity, the upper part of the front wall of the cooking cavity is provided with an upper air outlet and the lower part is provided with a lower air outlet, and the outer wall surface of the cooking cavity is connected to the inner surface of the casing. The walls define air ducts that communicate with the air inlet, the upper air outlet, and the lower air outlet respectively; the vortex fan is installed on the outer top wall of the cooking cavity and is located at the In the air passage, the vortex fan has a first air supply port and a second air supply port, and the air passage includes a first air outlet channel communicating with the first air supply port and the upper air outlet and a second air supply port, The cooking chamber and the second air outlet channel of the upper air outlet; an electrical device, the electrical device is installed on the outer top wall of the cooking cavity and includes a transformer and a magnetron, and the transformer is arranged on the In the first air outlet channel, the magnetron is arranged in the second air outlet channel; a hot air convection assembly for forming circulating hot air in the cooking chamber, the hot air convection assembly is installed in the cooking chamber The outer rear wall of the body and is located in the air duct. 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.

According to the utility model, the drawer-type microwave oven is integrated with hot air convection function, and can avoid the heat generated by hot air convection from accelerating the aging of electrical components, and has the advantages of long service life, good heat dissipation effect, and high safety.

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

The air duct also includes a rear air intake duct, a side air duct, a bottom air outlet duct and a suction duct, and the rear air intake duct is located at the rear of the cooking chamber and is connected to the air inlet respectively. The air outlet communicates with the air suction channel, the side air channel is located at the side of the cooking chamber and communicates with the air suction channel, and the bottom air outlet air channel is located below the cooking chamber and is respectively connected to the cooking chamber. The lower air outlet, the side air duct and the rear air intake duct are in communication, and the vortex fan is located in the air suction duct.

The cooking cavity is provided with a cavity air inlet and a cavity air outlet, the second air outlet channel includes a first air guide section and a second air guide section, and the first air guide section is located above the cooking chamber and communicate with the second air supply port and the air inlet of the cavity respectively, the second air guiding section is located above the cooking chamber and communicates with the air outlet of the cavity and the upper air outlet respectively, The magnetron is arranged in the first air guiding section.

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 intake duct and The second air suction port communicates with the side air duct.

The electrical device also includes a computer board assembly, a filter board, a high-voltage capacitor and a stirring motor, the computer board assembly is arranged in the air suction channel and adjacent to the second air suction port, and the filter board is arranged on the The air suction channel is arranged adjacent to the first air suction port, and the high voltage capacitor and the stirring motor are arranged in the first air outlet channel.

A windshield for separating the air 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 on the outer top of the cooking cavity. on the wall and extend upwards to the inner wall of the housing.

The top wall 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, and the top plate of the cooking cavity is provided with a channel communicating with the side and the first ventilation hole of the suction channel and the second ventilation hole communicating with the rear air inlet channel and the suction channel.

The rear wall of the cooking cavity extends to the two sides of the cooking chamber and the bottom of the cooking chamber to the inner wall surface of the shell, and the rear wall of the cooking cavity is provided with an air outlet connected to the bottom. The air duct and the third ventilation hole of the rear air intake duct.

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 outer top wall of the cooking cavity and communicate with the second air outlet, the second air guide cover is installed on the outer top wall of the cooking cavity and communicates with the air inlet of the cavity, and the magnetron is arranged on the first Between the first air guide cover and the second air guide cover.

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

The secondary electrical devices include interlock switches, micro switches and oven lights.

The hot air convection assembly includes: a heat shield, the heat shield is installed on the outer rear wall of the cooking cavity, and the rear wall of the cooking cavity is provided with a Several convection holes in the chamber; heat pipes, the heat pipes are installed on the heat shield and are covered in the heat shield; motors, the motor is mounted on the heat shield; convection fan blades, The convection fan blade is connected to the motor and is covered in the heat shield; the temperature controller is installed on the heat shield and communicates with the heat pipe.

The heating pipe is arranged around the convection fan blade.

The hot air convection assembly further includes: a motor bracket, and the motor is installed on the heat shield through the motor bracket.

The hot air convection assembly further includes: a cooling fan, which is connected in drive with the motor and arranged adjacent to the motor.

The heat shield includes: an outer heat shield; an inner heat shield, the inner heat shield is installed on the outer heat shield, at least one of the outer heat shield and the inner heat shield Installed on the outer rear wall of the cooking cavity, the motor and the thermostat are installed on the outer heat shield, and the heat pipe and the convection fan are covered on the inner heat shield inside the hood.

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 side view of a drawer-type microwave oven according to an embodiment of the present invention;

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

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

Fig. 5 is a partial structural diagram of a drawer-type microwave oven according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a hot air convection assembly of a drawer-type microwave oven according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of hot air convection in a drawer-type microwave oven according to an embodiment of the present invention.

Reference signs:

drawer microwave oven 1,

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

Shell 100, air inlet 202,

Cooking cavity 200, upper air outlet 201, lower air outlet 208, second ventilation hole 204, third ventilation hole 205, cavity air inlet 206, cavity air outlet 207, convection hole 209,

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,

Interlock switch 610, micro switch 620, furnace lamp 630,

Hot air convection assembly 700, heat shield 710, outer heat shield 711, inner heat shield 712, heat pipe 720, motor 730, convection fan blade 740, motor bracket 750, cooling fan 760, thermostat 770.

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 represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , are constructed and operated in a specific orientation and therefore cannot be construed as limiting 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 utility model, unless otherwise specified, "plurality" means two or more.

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

For microwave cooking devices such as drawer-type microwave ovens with hot air convection function, electrical components and hot air convection components will generate a large amount of heat during operation, and air ducts are required to cool the electrical components. In the prior art, functional electrical devices such as hot air convection components, magnetrons, and transformers 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 embedded product is usually sealed due to safety regulations, so the air outlet can only be set in front of the cooking cavity, so that the electrical components and hot air convection components are located in the cooking cavity At the rear, the air outlet is located in front of the cooking cavity, resulting in a long air path for hot air, and the hot air will stay in the drawer microwave oven for a long time before being discharged from the air outlet. The heat will be absorbed again, thereby reducing the heat dissipation performance of the entire drawer microwave oven, and the heat generated by the hot air convection component passes through the electrical components, which affects the service life of the drawer microwave oven.

Therefore, the utility model proposes a drawer-type microwave oven 1 integrated with hot air convection function, which can avoid the heat generated by hot air convection from accelerating the aging of electrical components, and has the advantages of long service life, good heat dissipation effect, and high safety.

The drawer-type microwave oven 1 according to the embodiment of the present utility model will be described below with reference to FIGS. 1-7 .

As shown in FIGS. 1-7 , the drawer-type microwave oven 1 according to the embodiment of the present invention includes a housing 100 , a cooking cavity 200 , a vortex fan 500 , electrical components, a hot air convection assembly 700 and a drawer 400 .

Specifically, an air inlet 202 is provided at a lower portion of the rear wall of the casing 100 . The cooking cavity 200 is arranged in the shell 100, and a cooking chamber (not shown) is defined in the cooking cavity 200, the upper part of the front wall of the cooking cavity 200 is provided with an upper air outlet 201, and the cooking cavity 200 The lower part of the front wall is provided with an upper air outlet 201, and an air duct is defined between the outer wall of the cooking cavity 200 and the inner wall of the housing 100, and the air duct communicates with the air inlet 202, the upper air outlet 201 and the lower air outlet 208 respectively.

The vortex fan 500 is installed on the outer top wall of the cooking cavity 200, and the vortex fan 500 is located in the air channel. The vortex fan 500 has a first air supply port 503 and a second air supply port 504. The air channel includes the first air outlet channel 10 and the second air channel. Two air outlet channels 20 , the first air outlet channel 10 communicates with the first air outlet 503 and the upper air outlet 201 , and the second air outlet channel 20 communicates with the second air outlet 504 , the cooking chamber and the upper air outlet 201 .

The hot air convection assembly 700 is used to form circulating hot air in the cooking chamber. The hot air convection assembly 700 is installed on the outer rear wall of the cooking cavity 200 and is located in the air duct. The heat generated by the hot air convection assembly 700 can continue to reach the cooking chamber. Everywhere, so that the temperature in the cooking chamber is uniform, and the heat preservation effect is good.

The electrical device is installed on the outer top wall of the cooking cavity 200, and the electrical device 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 channel 20 Inside. 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 utility model, the upper 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 components 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. In this way, the electrical components are arranged near the upper air outlet 201, and the cold air enters from the rear wall of the housing 100. The tuyere 202 enters the air duct, and is sent out from the first air supply opening 503 and the second air supply opening 504 respectively under the action of the vortex fan 500, and the wind that flows over from the first air supply opening 503 is discharged by the upper air outlet 201 after cooling the transformer 330, and is discharged from the upper air outlet 201. The wind flowing from the second air supply port 504 cools the magnetron 360 and then enters the cooking chamber, takes away the cooking fume and water vapor, and then discharges from the upper air outlet 201, thereby shortening the flow path of the hot air and speeding up the electric device The cooling speed improves the heat dissipation performance.

And, by setting the upper air outlet 201 at the bottom of the front wall of the cooking cavity 200, and the hot air convection assembly 700 is installed on the outer rear wall of the cooking cavity 200, so that the hot air convection assembly 700 is separated from the electrical device, preventing The heat generated by the hot-air convection assembly 700 and the electric device interacts. When the hot-air convection assembly 700 works and the vortex fan 500 does not work, the cold wind enters the air duct from the air inlet 202 on the rear wall of the casing 100, and a part enters the cooking air passage through the hot-air convection assembly 700. The chamber forms hot air convection, and a part of it flows through the hot air convection assembly 700 and is discharged from the lower air outlet 208 at the bottom of the front wall of the cooking cavity 200 to cool the hot air convection assembly 700, that is, the wind passing through the hot air convection assembly 700 will not pass through the electrical appliances. components to better cool the hot air convection assembly 700 and electrical components, and avoid the heat generated by the hot air convection assembly 700 affecting the electrical components and causing aging of the electrical components. Moreover, the hot air passing through the hot air convection assembly 700 is discharged from the lower air outlet 208, which improves the fireproof performance and prevents the remaining hot air in the cabinet from being sucked into the air duct through the air inlet 202 again to affect the cooling effect. In addition, the electrical components are installed on the outer top wall of the cooking cavity 200, which can reduce the overall length of the drawer microwave oven 1 in the front and rear directions.

Therefore, the drawer-type microwave oven 1 according to the utility model is integrated with a hot air convection function, and can avoid the heat generated by the hot air convection from accelerating the aging of electrical components, and has the advantages of long service life, good heat dissipation effect, and high safety.

A drawer-type microwave oven 1 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1-7 , the drawer-type microwave oven 1 according to the embodiment of the present invention includes a housing 100 , a cooking cavity 200 , a vortex fan 500 , electrical components, a hot air convection assembly 700 and a drawer 400 .

According to some embodiments of the present invention, as shown in FIGS. 3-5 , the air duct further includes a bottom outlet air duct 31 , a side air duct 32 , a rear air intake duct 33 and an air suction duct 34 .

The rear air intake channel 33 is located at the rear of the cooking chamber, and the rear air intake channel 33 communicates with the air inlet 202 and the air suction channel 34 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 bottom air outlet duct 31 is located below the cooking chamber, and the bottom air outlet duct 31 communicates with the lower air outlet 208, the side air duct 32 and the rear air intake duct 33 respectively, and the vortex fan 500 is located in the suction duct within 34.

Thus, when the hot-air convection assembly 700 works and the vortex blower 500 does not work, the hot-air convection assembly 700 sucks air from the air inlet 202 at the bottom of the rear wall of the housing 100 into the rear air inlet duct 33, and a part is heated by the hot-air convection assembly 700 After entering the cooking chamber to form hot air convection, the other part enters the side air duct 32 and the bottom air outlet air duct 31 through the hot air convection assembly 700 and cools the hot air convection assembly 700, and is finally discharged by the lower air outlet 208, while the hot air in the cooking chamber Finally, it also returns to the rear air inlet air channel 33 , and is discharged from the lower air outlet 208 as the cooling air passes through the side air channel 32 and the bottom air outlet air channel 31 .

When the hot air convection assembly 700 is not working and the vortex fan 500 is working, the vortex fan 500 sucks the air from the air inlet 202 on the bottom of the rear wall of the housing 100 into the rear air inlet duct 33, and then enters the vortex fan 500 in the suction channel 34 , and then, a part of 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 upper 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, then enter the cooking chamber, and finally discharge from the upper air outlet 201.

Optionally, as shown in FIGS. 3-5 , 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 communicates with the first air supply port 503 and the rear air intake 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, when the hot air convection assembly 700 is not working and the vortex fan 500 is working, the cold air flowing into the air suction channel 34 from the side air channel 32 and the rear air inlet channel 33 respectively is divided into two paths, and the first path of cold air is provided by the first The air outlet 503 enters the first air outlet channel 10 and cools the transformer 330, and then discharges the drawer microwave oven 1 from the upper air outlet 201, and the second cold air enters the second air outlet channel 20 through the second air outlet 504 to cool the magnetron 360 Then enter the cooking chamber and take away the cooking fume and water vapor in the cooking chamber, then discharge the cooking chamber, and finally discharge the drawer microwave oven 1 through the upper air outlet 201.

In some specific embodiments of the present utility model, as shown in Fig. 3-Fig. 5, electrical device 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, when the hot air convection assembly 700 is not working and the vortex fan 500 is working, the cold air blown from the side air duct 32 cools the computer board assembly 310, and then blows out from the second air outlet 504 to cool the magnetron 360, and then enters the cooking chamber After the cold wind blowing from the rear air inlet duct 33 cools the filter plate 320, it is blown out by 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 upper air outlet 201 from the drawer type microwave oven 1 .

It can be understood that the electrical device can 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 inlet air channel 33 cools the filter plate 320, the filter plate 320 is cooled by the first air outlet channel 10. An air outlet 503 blows out and cools the high voltage diode.

In some embodiments of the present utility model, as shown in Fig. 3-Fig. 5, a windshield 30 is arranged in the air duct, the windshield 30 is installed on the outer top wall of the cooking chamber, and the windshield 30 extends upwards To the inner wall surface of the housing 100, so that the windshield 30 can separate the suction channel 34 and the first air outlet channel 10, and separate the suction channel 34 and the second air outlet channel 20, that is, the windshield 30 can separate 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, preventing the hot air from being sucked back into the vortex fan 500 and the heat generated by the hot air convection assembly 700 penetrating into the transformer 330 and the magnetron 360 .

In an optional embodiment of the present utility model, as shown in FIGS. 3-5 , the top wall of the cooking cavity 200 faces to both sides of the cooking chamber (for example, the left and right sides shown in the figure) and the cooking chamber respectively. The rear of the cooking cavity extends to the inner wall of the shell 100. The top wall of the cooking cavity 200 is provided with a first ventilation hole and a second ventilation hole 204. The first ventilation hole communicates with the side air channel 32 and the suction channel 34, and the second ventilation hole The hole 204 communicates with the rear air intake channel 33 and the air suction channel 34 . In this way, cold air enters the suction channel 34 through the first ventilation hole and the second ventilation hole 204 respectively.

Advantageously, the rear wall of the cooking cavity 200 extends to the inner wall surface of the shell 100 respectively to both sides of the cooking chamber (for example, the left and right sides shown in the figure) and below the cooking chamber, and the rear wall of the cooking cavity 200 The wall is provided with a third ventilation hole 205, and the third ventilation hole 205 communicates with the bottom air outlet duct 31 and the rear air inlet duct 33, so that the cold wind in the bottom outlet air duct 31 can enter through the third ventilation hole 205 Rear air intake duct 33.

According to some embodiments of the present utility model, as shown in Fig. 3-Fig. Two air guide sections 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 top of the cooking chamber above, and the second air guiding section 22 communicates with the cavity air outlet 207 and the upper air outlet 201 respectively, and the magnetron 360 is arranged in the first air guiding 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. The fumes and water vapor are taken away, and finally discharged from the upper air outlet 201.

Optionally, as shown in FIGS. 4 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 of the cooking cavity 200 wall, and the first wind guide 40 communicates with the second air outlet 504, the second wind guide 50 is installed on the outer top wall of the cooking cavity 200, and the second wind guide 50 passes through the top plate of the cooking cavity 200 The cavity air inlet 206 on the top communicates with the cooking chamber, and the magnetron 360 is arranged between the first wind guide cover 40 and the second wind guide cover 50, so that the first wind guide cover 40 and the second wind guide cover 50 define Out of the first air guide 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 passing through the magnetron 360, in the second Under the guidance of the wind guide cover 50, 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. 4 and Fig. 5, the second air outlet channel 20 is also provided with a third wind guide hood 60 and a fourth wind guide cover 70, and the cavity air outlet 207 is located at the cooking On the right side wall of cavity 200. The third air guide 60 is installed on the right outer wall of the cooking cavity 200 , and the cavity air outlet 207 communicates with the cooking chamber and the third air guide 60 . The fourth air guide 70 is installed on the outer top wall of the cooking cavity 200 , and the fourth air guide 70 communicates with the third air guide 60 and the upper 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 .

Optionally, as shown in FIG. 4 , the drawer-type microwave oven 1 further includes secondary electrical components, and the secondary electrical components are arranged in the side air duct 32 . For example, the secondary electrical device 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, thereby The heat dissipation performance is better, which is beneficial to prolonging the service life of the drawer microwave oven 1 . Wherein, the secondary electrical components can also be respectively arranged on the left side and the right side of the cooking chamber.

In some specific embodiments of the present invention, as shown in FIG. 6 , the hot air convection assembly 700 may include a heat shield 710 , a heat pipe 720 , a motor 730 and a convection fan blade 740 . Wherein, the heat shield 710 is installed on the rear wall of the cooking cavity 200, and the rear wall of the cooking cavity 200 is provided with several convection holes 209 communicating with the heat shield 710 and the cooking chamber, and the heat pipe 720 is installed on the heat shield 710. and is covered in the heat shield 710 to reduce heat loss and lower the temperature rise of the outer parts. The motor 730 is installed on the heat shield 710, and the convection fan blade 740 is connected to the motor 730 and is covered in the heat shield 710. Therefore, when the hot air convection assembly 700 is working, the motor 730 rotates and drives the convection fan blade 740 to rotate. The air in the rear air intake channel 33 and the cooking chamber is sucked between the heat shield 710 and the cooking cavity 200, and is heated by the heat pipe 720 to form hot air, and then the convection fan blade 740 is transported to the cooking chamber and forms a circulation. Optionally, the hot air convection assembly 700 may further include a motor bracket 750 through which the motor 730 is mounted on the heat shield 710 , which is convenient and reliable for assembly.

In the embodiment shown in FIG. 6 , the heat pipe 720 may be arranged around the convection fan blade 740 , that is, the heat pipe 720 is arranged around the convection fan blade 740 . In other words, the convection fan blade 740 is arranged in the middle of the heat pipe 720, which is beneficial to the convection fan blade 740 to transfer all the heat generated by the heat pipe 720 to the cooking chamber, and the heat can reach different positions in the cooking chamber, so that the cooking chamber The temperature is more uniform and the insulation effect is enhanced. Preferably, the convection fan blade 740 is a straight fan blade, that is, each blade of the convection fan blade 740 generally extends along the radial direction of the convection fan blade 740, so that the wind generated by the convection fan blade 740 is a radial wind, and the radial wind blows Heat pipes 720 to deliver heat to different levels of the cooking chamber.

In an optional embodiment shown in FIG. 6 , the hot air convection assembly 700 may further include a cooling fan 760 , which is in transmission connection with the motor 730 , and the cooling fan 760 is disposed adjacent to the motor 730 . For example, the cooling fan 760 is located between the motor bracket 750 and the heat shield 710. When the motor 730 rotates, the cooling fan 760 is driven to rotate, thereby cooling components outside the heat shield 710 such as the motor 730 and reducing the temperature rise of these components.

As shown in FIG. 6 , in some embodiments of the present invention, the heat shield 710 may include an outer heat shield 711 and an inner heat shield 712 . The inner heat shield 712 is installed on the outer heat shield 711 , the motor 730 is installed on the outer heat shield 711 , and the heating pipe 720 and the convection fan blade 740 are housed in the inner heat shield 712 . Wherein, at least one of the outer heat shield 711 and the inner heat shield 712 is installed on the rear wall of the cooking cavity 200, for example, the outer heat shield 711 is installed on the rear wall of the cooking cavity 200, or the inner heat insulation The cover 712 is installed on the rear wall of the cooking cavity 200 . Of course, the outer heat shield 711 and the inner heat shield 712 can also be installed on the rear wall of the cooking cavity 200 respectively. The heat shield 710 adopts a double-layer structure. On the one hand, the heat insulation effect can be further improved. On the other hand, because the temperature of the inner heat shield 712 is relatively high, the outer heat shield 711 is used to cover the inner heat shield 712, so that the inner heat shield 712 can be avoided. Cover 712 is exposed to interfere with other nearby components.

Preferably, the hot air convection assembly 700 may further include a thermostat 770 installed on the heat shield 710, and the thermostat 770 communicates with the heat pipe 720, so as to control the temperature in the cooking chamber. For example, when the temperature in the cooking chamber reaches a preset temperature (for example, 200° C. to 240° C.), the thermostat 770 is disconnected, and the heat pipe 720 stops working. At this time, the motor 730 still keeps rotating to continue to supply air to the cooking chamber. , to ensure uniform temperature in the cooking chamber; when the temperature in the cooking chamber is lower than the preset temperature, the thermostat 770 is closed, the heat pipe 720 works, and the convection fan blade 740 transmits heat to the cooking chamber.

To sum up, according to the drawer-type microwave oven 1 of the embodiment of the present utility model, the arrangement of the air duct, the hot air convection assembly 700 and the electrical components is optimized, so that the hot air duct is the shortest, the components are cooled faster, and the generated heat does not affect each other , so that the heat dissipation performance is better and the service life is longer.

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

In the description of the present utility model, 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 or a detachable connection, or Connected integrally; either mechanically or electrically. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model 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 Specific features, structures, materials or characteristics described in an embodiment or example are 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, the scope of the present invention is defined by the claims and their equivalents.

Claims (16)

1. a kind of drawer-type microwave oven, it is characterised in that including：

Shell, the bottom of the rear wall of the shell is provided with air inlet；

Culinary art cavity, the culinary art cavity is located in the shell and defines cooking chamber, the culinary art in the cooking cavity body The top of the antetheca of cavity is provided with air outlet and bottom is provided with lower air outlet, outside wall surface and the shell of the culinary art cavity Internal face between limit the air channel for being connected with the air inlet, the upper air outlet and the lower air outlet respectively；

Vortex fan, the vortex fan is arranged on the outer top wall surface of the culinary art cavity and in the air channel, described Vortex fan has the first air outlet and the second air outlet, and the air channel includes connection first air outlet and the upper air-out Second air-out passage of second air outlet of the first air-out passage and connection, the cooking chamber and the upper air outlet of mouth；

Electrical part, the electrical part is arranged on the outer top wall surface of the culinary art cavity and including transformer and magnetron, described Transformer is located in first air-out passage, and the magnetron is located in second air-out passage；

Hot air convection component for forming circulating air in the cooking chamber, the hot air convection component is arranged on described cooking Prepare food on the outer rear surface of cavity and in the air channel；

Drawer, the drawer can be arranged at least one of the shell and the culinary art cavity to beat on and off to push-and-pull Close the cooking chamber.

2. drawer-type microwave oven according to claim 1, it is characterised in that the air channel also include rear portion wind inlet channel, Sidepiece air channel, bottom exhaust air flue and air-suction channel, the rear portion wind inlet channel be located at the cooking chamber rear portion and respectively with The air inlet is connected with the air-suction channel, the sidepiece air channel be located at the cooking chamber sidepiece and with the air-suction channel Connection, the bottom exhaust air flue be located at the cooking chamber lower section and respectively with the lower air outlet, the sidepiece air channel and The rear portion wind inlet channel connection, the vortex fan is located in the air-suction channel.

3. drawer-type microwave oven according to claim 1, it is characterised in that the culinary art cavity be provided with cavity air inlet and Cavity air outlet, second air-out passage includes the first wind-guiding section and the second wind-guiding section, and the first wind-guiding section is located at described It is connected above cooking chamber and respectively with second air outlet and the cavity air inlet, the second wind-guiding section is located at described The top of cooking chamber and connect with the cavity air outlet and the upper air outlet respectively, the magnetron is located at described first and leads In wind section.

4. drawer-type microwave oven according to claim 2, it is characterised in that the vortex fan has and sent with described first First inlet scoop and the second inlet scoop for being connected with second air outlet of air port connection, first inlet scoop with it is described Rear portion wind inlet channel is connected and second inlet scoop connects with the sidepiece air channel.

5. drawer-type microwave oven according to claim 4, it is characterised in that the electrical part also include computer board component, Filter band, high-voltage capacitance and stirring motor, the computer board component are located in the air-suction channel and neighbouring second air draught Mouth is set, and the filter band is located in the air-suction channel and neighbouring first inlet scoop setting, the high-voltage capacitance and institute Stirring motor is stated to be located in first air-out passage.

6. drawer-type microwave oven according to claim 2, it is characterised in that be provided with the air channel for separating the suction Wind passage and first air-out passage and the deep bead of second air-out passage, the deep bead are arranged on the cooking cavity On the outer top wall surface of body and extend upwardly to the internal face of the shell.

7. drawer-type microwave oven according to claim 2, it is characterised in that the roof of the culinary art cavity is respectively to described The rear of the both sides of cooking chamber and the cooking chamber extends to the internal face of the shell, and the top board of the culinary art cavity is provided with Connect the sidepiece air channel and the first air vent of the air-suction channel and connect the rear portion wind inlet channel and the air draught Second air vent of passage.

8. drawer-type microwave oven according to claim 2, it is characterised in that the rear wall of the culinary art cavity is respectively to described The internal face of the shell is extended to below the both sides of cooking chamber and the cooking chamber, the rear wall of the culinary art cavity is provided with Connect the third venting hole of the bottom exhaust air flue and the rear portion wind inlet channel.

9. drawer-type microwave oven according to claim 3, it is characterised in that second air-out passage is provided with for limiting Go out first wind scooper and the second wind scooper of the first wind-guiding section, first wind scooper is arranged on the outer of the culinary art cavity Connected on top wall surface and with second air outlet, second wind scooper be arranged on it is described culinary art cavity outer top wall surface on and Connected with the cavity air inlet, the magnetron is located between first wind scooper and second wind scooper.

10. drawer-type microwave oven according to claim 2, it is characterised in that also include：

Secondary electrical part, the secondary electrical part is located in the sidepiece air channel.

11. drawer-type microwave ovens according to claim 10, it is characterised in that the secondary electrical part is opened including interlocking Pass, microswitch and stove lamp.

12. drawer-type microwave oven according to any one of claim 1-11, it is characterised in that the hot air convection component Including：

Heat shield, the heat shield is arranged on the outer rear surface of the culinary art cavity and the rear wall of the culinary art cavity is provided with Connect some convection holes of the heat shield and the cooking chamber；

Heat-generating pipe, the heat-generating pipe is arranged on the heat shield and is located in the heat shield；

Motor, the motor is arranged on the heat shield；

Convection current flabellum, the convection current flabellum is connected and is located in the heat shield with the motor；

Temperature controller, the temperature controller is arranged on the heat shield and is communicated with the heat-generating pipe.

13. drawer-type microwave ovens according to claim 12, it is characterised in that the heat-generating pipe is around the convection current flabellum Set.

14. drawer-type microwave ovens according to claim 12, it is characterised in that the hot air convection component also includes：

Electric machine support, the motor is arranged on the heat shield by the electric machine support.

15. drawer-type microwave ovens according to claim 12, it is characterised in that the hot air convection component also includes：

Cooling fan, the cooling fan is connected with the motor and the neighbouring motor is set.

16. drawer-type microwave ovens according to claim 12, it is characterised in that the heat shield includes：

Outer heat shield；

Interior heat shield, the interior heat shield is arranged on the outer heat shield, in the outer heat shield and the interior heat shield At least one is arranged on the outer rear surface of the culinary art cavity, and the motor and the temperature controller are arranged on the outer heat shield On, the heat-generating pipe and the convection current flabellum are located in the interior heat shield.