CN205783137U - Microwave oven - Google Patents

Abstract

The open a kind of microwave oven of this utility model, it includes shell, inner shell and blower fan；Wherein, shell includes the header board being provided with opening, and the lower end of header board is provided with the first air inlet, upper end is provided with air outlet；Inner shell is arranged in shell, being formed with the air-guiding aisle being positioned on the downside of inner shell and with the heat dissipation chamber that air outlet connects, be positioned at the inner shell left and right sides between shell with inner shell and be positioned at the electric apparatus room connected on the upside of inner shell and with air outlet, electric apparatus room is connected with stove heat dissipation chamber by two air-guiding aisles；Assembling is in electric apparatus room.This utility model, by the air outlet of microwave oven is arranged at the upper end of header board, is positioned over the product below microwave oven with the hot blast impact avoiding microwave oven to discharge.

Description

Microwave oven with a heat exchanger

Technical Field

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

Background

The existing microwave oven comprises an outer shell, an inner shell and a fan, wherein the inner shell and the fan are arranged in the outer shell, the outer shell and the inner shell jointly form a heating cavity, and a heat dissipation channel is formed between the outer shell and the inner shell. Generally, the air inlet of the heat dissipation channel is disposed at the upper end of the front plate of the housing, and the air outlet of the heat dissipation channel is disposed at the lower end of the front plate of the housing.

When the microwave oven works, the external air entering the heat dissipation channel from the air inlet is exhausted through the air outlet so as to take away part of heat in the microwave oven. Because the air outlet of the heat dissipation channel is arranged at the lower end of the front plate, hot air exhausted from the air outlet can blow away products placed below the microwave oven, and then the appearance and the color of the products positioned below the microwave oven can be changed.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a microwave oven, which aims to reduce the influence of the hot air exhausted by the microwave oven on other products.

In order to achieve the above purpose, the utility model provides a microwave oven, which comprises an outer shell, an inner shell and a fan; wherein,

the shell comprises a front plate with an opening, the lower end of the front plate is provided with a first air inlet, and the lower end of the front plate is provided with an air outlet;

the inner shell is arranged in the outer shell, a heat dissipation chamber which is positioned on the lower side of the inner shell and communicated with the first air inlet, air guide channels which are positioned on the left side and the right side of the inner shell and an electrical appliance chamber which is positioned on the upper side of the inner shell and communicated with the air outlet are formed between the outer shell and the inner shell, and the electrical appliance chamber is communicated with the heat dissipation chamber through the two air guide channels;

the fan is arranged in the electric appliance room.

Preferably, air guide plates are arranged in the two air guide channels, and the air guide plates are used for guiding the air in the air guide channels to the electric appliance room.

Preferably, the air guide plate extends from front to back and is obliquely arranged from bottom to top, so that the air guide channel is gradually enlarged from front to back.

Preferably, the outer shell has side plates located at the left and right sides of the inner shell, and a second air inlet is formed in one of the two side plates.

Preferably, the two side plates are provided with second air inlets.

Preferably, the microwave oven further comprises two fixing plates, the two fixing plates are respectively arranged on the left side and the right side of the front plate, and each fixing plate is provided with a vent.

Preferably, the outer casing has a rear plate located at the rear side of the inner casing, and the rear plate is provided with a third air inlet communicated with the electric appliance chamber.

Preferably, the microwave oven is further including set up in the indoor baffle of electrical apparatus, the baffle will the electrical apparatus room separate into with the first cavity of two wind-guiding passageways intercommunications and with the second cavity of air outlet intercommunication, be equipped with the intercommunication on the baffle the ventilation hole of first cavity and second cavity, the fan set up in the first cavity.

Preferably, the fan is a vortex fan.

Preferably, the microwave oven further comprises a door body, and the door body is rotatably connected with the front plate and used for covering the opening on the front plate.

The utility model discloses technical scheme sets up the air outlet in the upper end of front bezel through the air intake with microwave oven in the lower extreme of front bezel, and air that gets into in the microwave oven from the air intake is discharged from the air outlet. Therefore, hot air exhausted by the microwave oven is prevented from blowing to products placed below the microwave oven, and therefore the influence of the hot air exhausted by the microwave oven on other products is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of a microwave oven according to the present invention;

fig. 2 is a front view of the microwave oven of fig. 1;

FIG. 3 is a schematic view illustrating the air flow of the microwave oven of FIG. 1

FIG. 4 is another view of the microwave oven of FIG. 1;

fig. 5 is a schematic view illustrating the flow of air inside the microwave oven of fig. 1.

Fig. 6 is a right side view of the microwave oven of fig. 1;

fig. 7 is a rear view of the microwave oven of fig. 1;

fig. 8 is a schematic view illustrating the flow of air at the rear side of the microwave oven of fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Microwave oven with a heat exchanger	40	Air guide channel
10	Outer casing	45	Electric appliance room
				15	Inner shell	401	Air deflector
20	Fan blower	103a	Second air inlet
				25	Electrical device	50	Hot air motor
101	Front plate	55	Fixing plate
				102	Back plate	551	Air vent
103	Side plate	102a	Third air inlet
				104	Base plate	60	Partition board
101a	Opening of the container	451	In the first chamber
				101b	First air inlet	452	In the second chamber
101c	Air outlet	601	Vent hole
				30	Heating cavity	65	Door body
35	Heat radiation chamber

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The existing microwave oven comprises an outer shell, an inner shell and a fan, wherein the inner shell and the fan are arranged in the outer shell, the outer shell and the inner shell jointly form a heating cavity, and a heat dissipation channel is formed between the outer shell and the inner shell. Generally, the air inlet of the heat dissipation channel is disposed at the upper end of the front plate of the housing, and the air outlet of the heat dissipation channel is disposed at the lower end of the front plate of the housing. When the microwave oven works, the air outlet of the heat dissipation channel discharges hot air outwards, and the hot air is blown against a product placed below the microwave oven all the time, so that the shape and the color of the product are changed. In view of the above problems, the present invention provides an improved air outlet of a microwave oven, referring to fig. 1 to 2, and fig. 1 to 2 are schematic structural diagrams of an embodiment of a microwave oven provided by the present invention.

In the embodiment of the present invention, referring to fig. 1, the positive direction of OX is taken as right, the negative direction of OX is taken as left, the positive direction of OY is taken as front, the negative direction of OY is taken as rear, the positive direction of OZ is taken as up, and the negative direction of OZ is taken as down.

The microwave oven 100 is installed embedded in a wall, a cabinet or other carrier. It comprises an outer shell 10, an inner shell 15 and a fan 20. Generally, the microwave oven 100 further includes components such as an electric device 25, a motor (not shown), and a turntable.

The housing 10 includes a front plate 101, a rear plate 102, two side plates 103, a top plate (not shown), and a bottom plate 104. The front plate 101, the rear plate 102, the two side plates 103, and the top plate and the bottom plate 104 may be fixedly connected by welding, screwing, or other connection methods.

The front plate 101 is provided with an opening 101a, and the front plate 101 is provided with a first air inlet 101b at a lower end and an air outlet 101c at an upper end. It is understood that the first air inlet 101b and the first air outlet 101c may be a grille, a through hole, or other ventilation structure. In order to prevent impurities in the external air from entering the microwave oven 100, filtering screens (not shown) or other filtering structures may be disposed at the first air inlet 101b and the first air outlet 101 c.

The inner housing 15 is disposed inside the outer housing 10 and forms a heating chamber 30 with an open front end together with the outer housing 10, and the heating chamber 30 is used for heating or baking food. A heat dissipation chamber 35 located below the inner casing 15, air guide passages 40 located on both left and right sides of the inner casing 15, and an electric appliance chamber 45 located above the inner casing 15 are formed between the outer casing 10 and the inner casing 15. The electric appliance chamber 45 is disposed to communicate with the air outlet 101c of the front plate 101, the heat dissipation chamber 35 is disposed to communicate with the first air inlet 101b of the front plate 101, and the electric appliance chamber 45 communicates with the heat dissipation chamber 35 through the two air guide passages 40. The electric device 25 is mounted in the electric appliance chamber 45, the turntable is mounted in the heating chamber 30, and a motor (not shown) for driving the turntable to rotate is mounted in the heat dissipation chamber 35.

The blower 20 is installed in the appliance room 45. The fan 20 is mainly used for driving external air to enter the heat dissipation chamber 35 from the first air inlet 101b of the front plate 101, enter the electrical appliance chamber 45 through the two air guide channels 40, and then be discharged out of the microwave oven 100 through the air outlet 101c of the front plate 101. The external air enters the heat dissipation chamber 35 to cool the motor which is arranged in the heat dissipation chamber 35 and used for driving the turntable to rotate; when the external air enters the electric appliance chamber 45, the electric appliances 25 installed in the electric appliance chamber 45 are cooled.

Preferably, the fan 20 is a vortex fan, and the vortex fan has the advantages of low noise, low energy consumption, stable performance, convenience in maintenance and the like.

Referring to fig. 3, in the process that the external air enters the microwave oven 100 through the first air inlet 101b of the front plate 101 and is exhausted through the air outlet 101c of the front plate 101, most of the heat in the heat dissipation chamber 35 and the electric appliance chamber 45 is taken away, thereby avoiding the problem of over-temperature of the housing 10 of the microwave oven 100. Moreover, the air outlet 101c of the microwave oven 100 is arranged at the upper end of the front plate 101, so that hot air exhausted from the air outlet 101c can be effectively prevented from blowing towards a product positioned below the microwave oven 100, and the change of the appearance and the color of the product is avoided.

Referring to fig. 4, in order to make the air in the two air guiding channels 40 flow into the electrical appliance chamber 45 more quickly, air guiding plates 401 are disposed in both air guiding channels 40. Preferably, the air guiding plate 401 extends from front to back and is disposed to be inclined from bottom to top, so that the air guiding channel 40 is disposed to be gradually enlarged from front to back. The air deflector 401 is mainly used for guiding the air in the air guiding channel 40 and the air entering the air guiding channel 40 from the heat dissipation chamber 35 to flow into the electrical appliance chamber 45 from bottom to top. Thus, it is advantageous to increase the flow speed of air, and thus, to increase the heat dissipation speed of the microwave oven 100.

Referring to fig. 5, air enters the electrical chamber 45 through the heat dissipation chamber 35 and dissipates heat in the electrical chamber 45, and most of the heat is absorbed by the air passing through the heat dissipation chamber 35, so that the temperature of the air is increased, and the cooling effect of the air with the increased temperature on the electrical chamber 45 is not good. In order to effectively cool the electric appliance chamber 45, one side plate 103 of the two side plates 103 of the casing 10 is provided with a second air inlet 103a communicated with the corresponding air guiding channel 40. It should be noted that, when the microwave oven 100 is embedded in a wall or a cabinet, a certain gap is formed between the microwave oven 100 and the wall or the cabinet. When the fan 20 is started, air between the wall and the side plate 103 is sucked into the air guide channel 40 through the second air inlet 103a, and the air entering the air guide channel 40 from the second air inlet 103a is mixed with the air in the heat dissipation chamber 35, so that the temperature of the air entering the electric appliance chamber 45 can be effectively reduced, and the electric appliance 25 in the electric appliance chamber can be effectively cooled.

Referring to fig. 6, in order to further improve the heat dissipation effect of the microwave oven 100, the two side plates 103 of the housing 10 are respectively provided with a second air inlet 103a communicated with the corresponding air guiding channel 40. The air at the left and right sides of the microwave oven 100 can enter the air guiding passage 40 through the corresponding second air inlets 103 a. Thus, the air quantity entering the microwave oven 100 is increased, and the temperature of the air entering the electric appliance chamber 45 from the air guide passage 40 is further reduced, thereby being beneficial to improving the heat dissipation effect of the microwave oven 100. Referring to fig. 1, in order to enable the microwave oven 100 to be more stably installed in a wall or a cabinet, the microwave oven 100 further includes two fixing plates 55, the two fixing plates 55 are respectively disposed at left and right sides of the front plate 101, and the two fixing plates 55 are respectively fixedly connected to the wall or the cabinet.

In order to ensure that enough air between the two side plates 103 and the wall enters the air guide channel 40 from the second air inlet 103a, the two fixing plates 55 are both provided with air vents 551. When the air between the side plate 103 and the wall is sucked into the air guiding channel 40, the external air enters between the side plate 103 and the wall through the ventilation opening 551 of the fixing plate 55, so that the air between the side plate 103 and the wall is always kept in a circulating state, that is, sufficient air is always present between the wall and the side plate 103, and further, the heat dissipation of the microwave oven 100 is facilitated.

Referring to fig. 7 and 8, in order to improve the heat dissipation effect of the microwave oven 100, the rear plate 102 is provided with a third air inlet 102a communicated with the electric appliance chamber 45. The hot wind component of the microwave oven 100 is installed at the rear of the heating cavity 30, and when the fan 20 is turned on, the air between the wall and the housing 10 is driven by the fan 20 to enter the electric appliance chamber 45 from the third air inlet 102a, so that, on one hand, the hot wind motor 50 of the hot wind component installed on the rear plate 102 can be cooled; on the other hand, the air entering the electric appliance chamber 45 is increased, so that the heat dissipation effect in the electric appliance chamber 45 is improved, and the problem that the microwave oven 100 cannot work normally due to overhigh temperature of the electric appliance 25 in the electric appliance chamber 45 is avoided.

It should be noted that, a part of the air entering between the side plate 103 and the wall from the ventilation opening 551 of the fixing plate 55 enters the air guiding channel 40 through the second air inlet 103a, a part of the air flows along the casing 10 to the rear plate 102, and enters the electrical room 45 from the third air inlet 102a above the rear plate 102. Thus, the hot air motor 50 is effectively cooled, and sufficient air is ensured to enter the microwave oven 100 from the second air inlet 103a and the third air inlet 102a, thereby facilitating the improvement of the heat dissipation speed of the microwave oven 100.

Referring to fig. 1, in order to increase the flow rate of air passing through the electric chamber 45, the microwave oven 100 further includes a partition 60 disposed in the electric chamber 45, the partition 60 divides the electric chamber 45 into a first chamber 451 communicating with the two air guide channels 40 and a second chamber 452 communicating with the air outlet 101c, the partition 60 is provided with a vent 601 communicating the first chamber 451 with the second chamber 452, and the blower 20 is disposed in the first chamber 451. When the blower 20 is started, air in the two air guide channels 40 is sucked into the first chamber 451, and air in the first chamber 451 is driven to enter the second chamber 452 from the vent holes 601. It should be noted that when air enters a smaller space from a larger space, the speed of the air is increased; that is, the velocity of the air in the first chamber 451 is increased as it passes through the vent hole 601, thereby accelerating the discharge of the air to the outside through the electric device 25. In this manner, heat dissipation from the electrical device 25 within the second chamber 452 is facilitated, thereby facilitating an extension of the operational life of the electrical device 25.

Referring to fig. 1, the microwave oven 100 further includes a door 60, and the door 60 is rotatably connected to the front plate 101 for opening or closing the opening 101a of the front plate 101, i.e., for opening or closing the heating cavity 30 of the microwave oven 100. It should be noted that the door 60 and the front plate 101 may be rotatably connected by a hinge, a rotating shaft, or other structures. The door 60 covers the opening 101a of the front plate 101 to seal the heating cavity 30, thereby improving the food baking efficiency of the microwave oven 100; when the door 60 covers the opening 101a of the front plate 101, the left and right sides of the door 60 are in clearance fit with the fixing plates 55 on the left and right sides of the front plate 101, so that the door 60 is prevented from blocking the ventilation opening 551, air between the side plate 103 and the wall is insufficient, and the heat dissipation speed of the microwave oven 100 is not affected.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (10)

1. A microwave oven is characterized by comprising an outer shell, an inner shell and a fan; wherein,

the shell comprises a front plate with an opening, the lower end of the front plate is provided with a first air inlet, and the upper end of the front plate is provided with an air outlet;

the inner shell is arranged in the outer shell, a heat dissipation chamber which is positioned on the lower side of the inner shell and communicated with the first air inlet, air guide channels which are positioned on the left side and the right side of the inner shell and an electrical appliance chamber which is positioned on the upper side of the inner shell and communicated with the air outlet are formed between the outer shell and the inner shell, and the electrical appliance chamber is communicated with the heat dissipation chamber through the two air guide channels;

the fan is arranged in the electric appliance room.

2. The microwave oven as claimed in claim 1, wherein a wind guide plate is disposed in each of the wind guide channels, and the wind guide plate is used for guiding the wind in the wind guide channel to the electric appliance chamber.

3. The microwave oven according to claim 2, wherein the air guide plate extends from front to rear and is inclined from bottom to top such that the air guide passage is divergent from front to rear.

4. The microwave oven as claimed in claim 1, wherein the outer case has side plates at left and right sides of the inner case, and a second air inlet is formed at one of the side plates.

5. The microwave oven as claimed in claim 4, wherein both of the side plates are provided with second air inlets.

6. The microwave oven according to claim 5, further comprising two fixing plates respectively disposed at left and right sides of the front plate, each of the fixing plates having a ventilation opening.

7. The microwave oven as claimed in claim 1, wherein the outer case has a rear plate at a rear side of the inner case, the rear plate being provided with a third air inlet communicating with the appliance compartment.

8. The microwave oven according to claim 1, further comprising a partition plate disposed in the electric appliance chamber, the partition plate dividing the electric appliance chamber into a first chamber communicating with the two air guide passages and a second chamber communicating with the air outlet, the partition plate being provided with a ventilation hole communicating the first chamber and the second chamber, the fan being disposed in the first chamber.

9. The microwave oven as claimed in claim 1, wherein the fan is a vortex fan.

10. The microwave oven according to claim 1, further comprising a door rotatably coupled to the front plate for covering the opening of the front plate.