Microwave oven with efficient heat dissipation device

Abstract

The utility model provides a microwave oven with a high-efficiency heat dissipation device, and aims to solve the problems that electric elements and a heat dissipation fan in a microwave oven in the prior art are unreasonably arranged in the microwave oven, and the heat dissipation fan cannot effectively dissipate heat of the electric elements, so that the heat dissipation efficiency is relatively low. A microwave oven with an efficient heat dissipation device comprises a shell, an upper cooking cavity, a lower cooking cavity and a heat dissipation cavity are arranged in the shell, the lower cooking cavity and the heat dissipation cavity are arranged on the lower side of the upper cooking cavity side by side, and an air outlet communicated with the heat dissipation cavity is formed in the side wall of the shell; the heat dissipation fan is arranged at the bottom in the heat dissipation cavity, and an air inlet communicated with the air inlet end of the heat dissipation fan is formed in the bottom wall of the shell; and the electric element is arranged in the heat dissipation cavity and is positioned at the air outlet end of the heat dissipation fan. The LED lamp is more reasonable and compact in layout and higher in heat dissipation efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cooking electric appliances, and particularly relates to a microwave oven with an efficient heat dissipation device. BACKGROUND

[0002] A microwave oven is a cooking electric appliance for heating food by microwaves. During use, the internal electrical elements such as magnetrons, circuit boards and microwave stirrers of the microwave oven will heat up. If the electrical elements are in a high-temperature state for a long time, the overall performance and service life of the microwave oven will be affected. In the prior art, the electrical elements and the heat dissipation device in the microwave oven are arranged unreasonably. The electrical elements such as magnetrons, circuit boards and microwave stirrers are distributed in different areas, so that the heat dissipation fan cannot effectively dissipate heat from the electrical elements, and thus the heat dissipation efficiency is low. SUMMARY

[0003] The utility model provides a microwave oven with an efficient heat dissipation device, which aims at solving the problem of unreasonable arrangement of the electrical elements and the heat dissipation fan in the microwave oven in the prior art, the heat dissipation fan cannot effectively dissipate heat from the electrical elements, and thus the heat dissipation efficiency is low.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme:

[0005] A microwave oven with an efficient heat dissipation device comprises:

[0006] A shell is provided with an upper cooking cavity, a lower cooking cavity and a heat dissipation cavity. The lower cooking cavity and the heat dissipation cavity are arranged side by side on the lower side of the upper cooking cavity. An air outlet is arranged on the side wall of the shell and communicates with the heat dissipation cavity.

[0007] A heat dissipation fan is arranged at the bottom of the heat dissipation cavity. An air inlet is arranged on the bottom wall of the shell and communicates with the air inlet end of the heat dissipation fan.

[0008] An electrical element is arranged in the heat dissipation cavity and located at the air outlet end of the heat dissipation fan.

[0009] Further scheme: the electrical element comprises a magnetron, a circuit board and an upper cavity microwave stirrer. The magnetron and the circuit board are arranged side by side in the heat dissipation cavity and are provided with an air guide area which communicates with the air outlet end of the heat dissipation fan. The upper cavity microwave stirrer is arranged on the upper top wall of the heat dissipation cavity.

[0010] Based on the above technical solution: the layout of the above-mentioned magnetron, circuit board and upper cavity microwave stirrer in the heat dissipation cavity is more reasonable, which not only enables each electrical component to perform its function, but also facilitates the heat dissipation of each electrical component by the heat dissipation fan; an air guide area is set between the magnetron and the circuit board, so that the two are separated and the air blown out from the air outlet of the heat dissipation fan can pass through the air guide area to dissipate heat from the magnetron and the circuit board.

[0011] A further solution: the heat dissipation cavity is located at the rear side of the lower cooking cavity, the heat dissipation fan is arranged at the bottom of one side of the heat dissipation cavity, and the air outlet is located on the side wall of the shell and opposite to the heat dissipation fan.

[0012] Based on the above technical solution: the above setting enables the cooling fan to draw air from the air inlet at the bottom of the shell, and the drawn air can pass through the magnetron, circuit board and upper cavity microwave stirrer and then be discharged from the air outlet, thereby achieving high wind utilization and higher heat dissipation efficiency.

[0013] A further solution: the air outlet includes a side air outlet located on the side wall of the shell and a rear air outlet located on the rear wall of the shell.

[0014] Based on the above technical solution: the above setting enables the cooling fan to take in air from the left bottom of the shell, and take away the heat emitted by the electrical components in the heat dissipation cavity and blow it out to the outside through the side air outlet and the rear air outlet, thereby forming an efficient heat dissipation channel.

[0015] A further solution: a protrusion protruding backward is provided on the rear wall of the housing, and the protrusion is located on the rear side of the cooling fan and the magnetron;

[0016] The rear air outlet includes a plurality of rows of rear air outlet holes located on the upper side of the protruding portion and on the right side of the protruding portion.

[0017] Based on the above technical solution: by providing the protrusion, when the shell is placed against the wall, a certain distance is maintained between the rear air outlet and the wall, so that the air is easily discharged backward.

[0018] A further solution: the rear air outlet is arranged to tilt backward and downward from the inside of the heat dissipation cavity.

[0019] Based on the above technical solution: the above arrangement enables the wind to be discharged obliquely downward from the heat dissipation cavity, avoiding blowing onto objects above or on the sides of the shell.

[0020] A further solution: the side air outlet includes a plurality of rows of side air outlet holes arranged on the side wall of the shell.

[0021] A further solution: the side air outlet is arranged from the inside of the heat dissipation cavity toward the side of the shell and tilted downward.

[0022] Further scheme: the bottom of the heat dissipation cavity is provided with an annular mounting seat extending upwardly, the heat dissipation fan is arranged in the annular mounting seat, and the air inlet is a plurality of air inlet holes arranged on the lower side of the annular mounting seat.

[0023] Based on the above technical scheme: the annular mounting seat can play a certain air guide role, thereby increasing the air pressure of the heat dissipation fan, and making the heat dissipation efficiency higher.

[0024] Further scheme: the lower side of the heat dissipation fan is provided with a fan motor, and the output shaft of the fan motor is connected with the heat dissipation fan.

[0025] Based on the above technical scheme: the fan motor is arranged on the lower side of the heat dissipation fan, the layout is more reasonable and compact, the space in the heat dissipation cavity is avoided from being additionally occupied by the fan motor, and the electric element is arranged on the upper side of the air outlet end of the heat dissipation fan, so that the air blown out from the air outlet end can more fully contact the electric element.

[0026] The microwave oven with the high-efficiency heat dissipation device has the following beneficial effects:

[0027] The microwave oven with the high-efficiency heat dissipation device has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 is a structural schematic view of the microwave oven with the high-efficiency heat dissipation device.

[0030] Figure 2 is a structural schematic view of the microwave oven with the high-efficiency heat dissipation device.

[0031] Figure 3 is a cross-sectional structure schematic view of the upper cooking cavity, the lower cooking cavity and the heat dissipation cavity in the shell.

[0032] Figure 4 is a cross-sectional structure schematic view of the annular mounting seat.

[0033] Figure 5 is a structure schematic view of the side air outlet hole.

[0034] Explanation of figure mark:

[0035] 1-shell; 11-upper cooking cavity; 12-lower cooking cavity; 13-heat dissipation cavity; 14-upper cavity microwave stirrer; 15-magnetron; 16-circuit board; 17-heat dissipation fan; 18-annular mounting seat; 19-fan motor; 2-rear air outlet hole; 3-side air outlet hole; 4-air inlet hole; 5-protruding part. DETAILED DESCRIPTION

[0036] The technical scheme in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0037] As shown in Figures 1 to 3 , the present embodiment provides a microwave oven with high-efficiency heat dissipation device, comprising:

[0038] Shell 1, the shell 1 is provided with upper cooking cavity 11, lower cooking cavity 12 and heat dissipation cavity 13, the lower cooking cavity 12 and the heat dissipation cavity 13 are arranged side by side at the lower side of the upper cooking cavity 11, the side wall of the shell 1 is provided with an air outlet hole communicating with the heat dissipation cavity 13;

[0039] Heat dissipation fan 17, arranged at the bottom of the heat dissipation cavity 13, the bottom wall of the shell 1 is provided with an air inlet hole communicating with the air inlet end of the heat dissipation fan 17; and,

[0040] Electric element, arranged in the heat dissipation cavity 13 and located at the air outlet end of the heat dissipation fan 17; specifically, the electric element includes magnetron 15, circuit board 16 and upper cavity microwave stirrer 14.

[0041] Specifically, the heat dissipation fan 17 draws air from the air outlet into the heat dissipation cavity 13 when working, and blows the heat generated by the magnetron 15, the circuit board 16 and the microwave stirrer 14 in the upper cavity to the outside. The magnetron 15, the circuit board 16, the microwave stirrer 14 in the upper cavity and the heat dissipation fan 17 are all arranged in the heat dissipation cavity 13, so that the overall structure of the microwave oven is more reasonable, and the heat dissipation fan 17 can simultaneously dissipate heat for the magnetron 15, the circuit board 16 and the microwave stirrer 14 in the upper cavity.

[0042] In some embodiments, as shown in Figures 1 to 3 The magnetron 15 and the circuit board 16 are arranged side by side in the heat dissipation cavity 13, and a wind guide area in communication with the air outlet end of the heat dissipation fan 17 is arranged between the magnetron 15 and the circuit board 16, that is, a certain distance is arranged between the magnetron 15 and the circuit board 16, so that the air blown by the heat dissipation fan 17 passes through the wind guide area, and the magnetron 15 is preferably arranged on the left side of the circuit board 16; and the microwave stirrer 14 in the upper cavity is arranged on the upper top wall of the heat dissipation cavity 13.

[0043] In some embodiments, as shown in Figures 1 to 3 The heat dissipation cavity 13 is located at the rear side of the lower cooking cavity 12, the heat dissipation fan 17 is arranged at one side of the bottom of the heat dissipation cavity 13, and the air outlet is arranged on the side wall of the shell and opposite to the heat dissipation fan. The air outlet includes a side air outlet arranged on the side wall of the shell 1 and a rear air outlet arranged on the rear wall of the shell 1. Specifically, the heat dissipation fan 17 draws air from the bottom air inlet into the heat dissipation cavity 13 when working, and then blows a part of the air to the outside through the side air outlet and a part of the air to the outside through the rear air outlet, so as to increase the air inlet and outlet efficiency of the fan and further increase the heat dissipation efficiency. In a specific embodiment, the side air outlet is arranged on the right wall of the shell 1. That is, a first heat dissipation channel is arranged between the air outlet end of the heat dissipation fan 17 and the rear air outlet, and a second heat dissipation channel is arranged between the air outlet end of the heat dissipation fan 17 and the side air outlet. The air flowing through the first heat dissipation channel and the second heat dissipation channel passes through the magnetron 15 and the circuit board 16, so that the heat dissipation effect is better.

[0044] In some embodiments, as shown in Figures 1 to 3 A protruding part 5 protruding rearward is arranged on the rear wall of the shell 1, and the protruding part 5 is located at the rear side of the heat dissipation fan 17 and the magnetron 15.

[0045] The rear air outlet includes a plurality of rear air outlet holes 2 arranged on the upper side of the protruding part 5 and on the right side of the protruding part 5. Specifically, the protruding part 5 allows the shell 1 to be placed against a wall, and due to the presence of the rear protruding part 5, a certain distance is maintained between the rear air outlet hole 2 and the wall, facilitating the rearward discharge of air. By arranging the rear air outlet hole 2 on the upper side and the right side of the protruding part 5, the air blown out through the first heat dissipation channel can fully contact the magnetron 15 and the circuit board 16 and then be blown out to the outside, thereby increasing the heat dissipation efficiency.

[0046] The side air outlet includes a plurality of side air outlet holes 3 arranged on the side wall of the shell 1. That is, part of the air sucked in from the bottom of the shell 1 by the heat dissipation fan 17 is discharged to the outside through the side air outlet hole 3.

[0047] As shown in Figure 5 To avoid the air blown out from the heat dissipation cavity 13 from blowing on other electrical appliances placed beside the microwave oven, the rear air outlet hole 2 is arranged to be inclined rearward and downward from the inside of the heat dissipation cavity 13. The side air outlet hole 3 is arranged to be inclined downward from the inside of the heat dissipation cavity 13 to the side of the shell. That is, the air is inclined downward and discharged from the heat dissipation cavity 13.

[0048] In some embodiments, as shown in Figure 2 and Figure 4 The bottom of the heat dissipation cavity 13 is provided with an annular mounting seat 18 extending upward from the bottom, the heat dissipation fan 17 is arranged in the annular mounting seat 18, and the air inlet is a plurality of air inlets 4 arranged on the lower side of the annular mounting seat 18. Specifically, the bottom wall of the shell 1 is provided with a plurality of feet, so that the air inlets 4 can communicate with the outside. The annular mounting seat 18 is arranged to extend upward from the bottom wall of the shell 1, and a plurality of air inlets 4 are arranged on the bottom wall of the shell 1. The height of the upper end of the annular mounting seat 18 is lower than that of the magnetron 15 and the circuit board 16, and preferably lower than that of the rear air outlet hole 2 and the side air outlet hole 3.

[0049] In some embodiments, the lower side of the heat dissipation fan 17 is provided with a fan motor 19, and the output shaft of the fan motor 19 is connected to the heat dissipation fan 17. That is, the fan motor 19 is arranged in the annular mounting seat 18 and close to the air inlets 4, so that the heat dissipation fan 17 can simultaneously dissipate heat for the fan motor 19 when working.

[0050] Working principle:

[0051] The heat dissipation fan 17 on the microwave oven of the embodiment absorbs air from the air inlet hole 4 on the bottom wall of the shell 1 during operation, and dissipates heat from the magnetron 15, the circuit board 16, the upper cavity microwave stirrer 14 and the like, and then part of the heat is discharged to the outside from the rear air outlet hole 2 on the rear wall of the shell 1, and the other part is discharged to the outside from the side air outlet hole 3 on the side wall of the shell 1.

[0052] The utility model is not limited to the above optional implementation, and each scheme can be combined arbitrarily on the premise of not contradicting each other; anyone can derive other various forms of products under the enlightenment of the utility model, but no matter any change in shape or structure, any technical scheme falling within the scope defined by the claims of the utility model falls within the protection scope of the utility model.

Claims

1. A microwave oven with a high-efficiency heat dissipation device, characterized in that: include: a housing, wherein an upper cooking cavity, a lower cooking cavity, and a heat dissipation cavity are provided in the housing, wherein the lower cooking cavity and the heat dissipation cavity are arranged side by side on the lower side of the upper cooking cavity, and an air outlet communicating with the heat dissipation cavity is provided on a side wall of the housing; A heat dissipation fan is arranged at the bottom of the heat dissipation cavity, and an air inlet connected to the air inlet end of the heat dissipation fan is provided on the bottom wall of the shell; as well as, The electrical component is arranged in the heat dissipation cavity and located at the air outlet end of the heat dissipation fan.

2. A microwave oven with a high-efficiency heat dissipation device according to claim 1, characterized in that: The electrical components include a magnetron, a circuit board and an upper cavity microwave stirrer; the magnetron and the circuit board are arranged side by side in the heat dissipation cavity, and an air guide area connected to the air outlet end of the heat dissipation fan is provided between the two; the upper cavity microwave stirrer is arranged on the upper top wall of the heat dissipation cavity.

3. A microwave oven with a high-efficiency heat dissipation device according to claim 2, characterized in that: The heat dissipation cavity is located at the rear side of the lower cooking cavity, the heat dissipation fan is arranged at the bottom of one side in the heat dissipation cavity, and the air outlet is located on the side wall of the shell and opposite to the heat dissipation fan.

4. A microwave oven with a high-efficiency heat dissipation device according to claim 3, characterized in that: The air outlet includes a side air outlet located on the side wall of the shell and a rear air outlet located on the rear wall of the shell.

5. The microwave oven with a high-efficiency heat dissipation device according to claim 4, characterized in that: A protrusion protruding backward is provided on the rear wall of the housing, and the protrusion is located on the rear side of the cooling fan and the magnetron; The rear air outlet includes a plurality of rows of rear air outlet holes located on the upper side of the protruding portion and on the right side of the protruding portion.

6. The microwave oven with a high-efficiency heat dissipation device according to claim 5, characterized in that: The rear air outlet is arranged to be tilted backward and downward from the inside of the heat dissipation cavity.

7. The microwave oven with a high-efficiency heat dissipation device according to claim 4, characterized in that: The side air outlet includes a plurality of rows of side air outlet holes arranged on the side wall of the shell.

8. The microwave oven with a high-efficiency heat dissipation device according to claim 7, characterized in that: The side air outlet holes are arranged from the inside of the heat dissipation cavity toward the side of the shell and are inclined downward.

9. The microwave oven with a high-efficiency heat dissipation device according to claim 1, characterized in that: An annular mounting seat extending from bottom to top is provided at the bottom of the heat dissipation cavity, the heat dissipation fan is arranged in the annular mounting seat, and the air inlet is a plurality of air inlet holes arranged on the lower side of the annular mounting seat.

10. The microwave oven with a high-efficiency heat dissipation device according to claim 1, characterized in that: A fan motor is provided on the lower side of the heat dissipation fan, and an output shaft of the fan motor is connected to the heat dissipation fan.

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