CN104848272A - Microwave oven - Google Patents

Abstract

The invention provides a microwave oven, comprising: a casing, an inner container, electrical components, a fan and a plurality of legs, the casing has a mounting cavity and an electrical cavity, and the bottom plate of the casing is provided with an air inlet hole, and the casing is also provided with an air outlet hole ;The inner tank is installed in the installation cavity, the inner tank has a receiving cavity, and the inner tank is provided with an air inlet and an air outlet; the electrical components are arranged in the electrical cavity; the fan is installed in the electrical cavity, and is located at the air inlet. Air is supplied to the electrical cavity; a plurality of legs are arranged on the bottom plate; wherein, the accommodating cavity is respectively connected with the air inlet and the air outlet, and the air outlet is connected with the air outlet. In the microwave oven provided by the present invention, the air inlet hole is arranged on the bottom plate of the casing, and a foot is provided on the bottom plate, and the foot is supported between the bottom plate and the supporting surface of the microwave oven, so that the distance between the bottom plate and the supporting surface of the microwave oven is kept constant. To ensure that there is enough air volume to enter the electrical cavity from the air inlet, thereby improving the heat dissipation effect of the microwave oven.

Description

Micro-wave oven

technical field

The invention relates to the field of kitchen appliances, in particular to a microwave oven.

Background technique

At present, the cooling fans of existing microwave ovens are all arranged at the rear of the microwave oven. For non-embedded microwave ovens, the cooling fans in this structure can make the components in the microwave oven perform good heat exchange with the air around the microwave oven. , for the built-in microwave oven, because the microwave oven is installed in the cabinet, the microwave oven can only enter the air from the opening at the rear of the cabinet or the gap between the cabinet and the microwave oven. However, due to the limited air intake at the rear of the cabinet, the cabinet and microwave oven The gap between them is narrow, and in the actual use process, the general users do not have the awareness of the ventilation and heat dissipation of microwave ovens, so they will not make cabinets according to the installation requirements of microwave ovens. These factors make the existing embedded microwave ovens generally have insufficient air intake. As a result, the microwave oven works in a high-temperature environment for a long time, which easily accelerates the aging of the internal parts of the microwave oven, and even causes a fire in severe cases, thereby reducing the safety of the product.

Contents of the invention

In order to solve at least one of the above technical problems, the object of the present invention is to provide a microwave oven with good ventilation and heat dissipation effects and high safety in use.

In view of this, the present invention provides a microwave oven, comprising: a casing, the casing has an installation cavity and an electrical cavity, and the bottom plate of the casing is provided with an air inlet hole, and the casing is also provided with an air outlet hole; A tank, the inner tank is installed in the installation cavity, the inner tank has a receiving cavity, and the inner tank is provided with an air inlet and an air outlet; electrical components, the electrical components are arranged in the electrical cavity; A fan, the fan is installed in the electrical appliance cavity and is located at the air inlet hole, and is used to supply air to the electrical appliance cavity; and a plurality of legs, a plurality of the legs are arranged on the bottom plate; Wherein, the accommodating cavity communicates with the air inlet and the air outlet respectively, and the air outlet communicates with the air outlet.

In the microwave oven provided by the present invention, the air inlet hole is arranged on the bottom plate of the shell, and a foot is provided on the bottom plate, and the foot is supported between the bottom plate and the supporting surface of the microwave oven, so that the distance between the bottom plate and the supporting surface of the microwave oven is kept constant. To ensure that there is enough air volume to enter the electrical cavity from the air inlet, so as to improve the heat dissipation effect of the microwave oven and ensure the safety of the product.

Specifically, the cooling fan of the existing microwave oven is arranged at the rear of the microwave oven. For an embedded microwave oven equipped with this structure, its cooling effect is highly dependent on the cabinet structure and the installation relationship between the cabinet and the microwave oven. In the case of inappropriate cabinet design, it is easy to cause safety accidents. In the microwave oven provided by the present invention, the air inlet hole is arranged on the bottom plate of the shell, and a foot is provided on the bottom plate, which is supported between the bottom plate and the supporting surface of the microwave oven. In order to maintain a constant gap between the bottom plate and the supporting surface of the microwave oven, to ensure that there is enough air volume to enter the electrical cavity from the air inlet hole, thereby reducing the impact of the cooling effect of the microwave oven caused by improper design of the cabinet, and further Ensure product safety.

In addition, the microwave oven in the above embodiments provided by the present invention may also have the following additional technical features:

According to an embodiment of the present invention, the microwave oven further includes: an air guide channel, the air guide channel is arranged in the electrical appliance chamber, the first port of the air guide channel communicates with the fan, and the second port communicates with the fan. The air inlets are connected, and the electrical components are arranged in the air guiding channel.

According to an embodiment of the present invention, the air guide channel includes: a first air guide cover, the first port of the first air guide cover communicates with the fan; and a second air guide cover, the second The first port of the wind guide cover communicates with the second port of the first wind guide cover, and the second port communicates with the air inlet; wherein, the second port of the first wind guide cover communicates with the first air guide cover. There is a space between the first ports of the two air guide covers.

According to an embodiment of the present invention, the electrical components are arranged at the interval.

According to an embodiment of the present invention, the height of the support feet is 5mm-15mm.

According to an embodiment of the present invention, the air inlet hole is arranged at the front of the bottom plate.

According to an embodiment of the present invention, the blower includes: a motor, the motor is arranged in the electric appliance cavity; and a centrifugal wind wheel, the centrifugal wind wheel is connected with an output shaft of the motor.

According to an embodiment of the present invention, the microwave oven further includes: an air outlet cover, the air outlet cover is arranged on the casing, and the first port of the air outlet cover communicates with the air outlet hole, and the first port of the air outlet cover communicates with the air outlet hole. Two ports are located above the oven door of the microwave oven.

According to an embodiment of the present invention, the air outlet is arranged on the upper plate of the inner container.

According to an embodiment of the present invention, the air outlet hole is arranged on the top plate of the housing, and/or the air outlet hole is arranged on the side plate of the housing.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a three-dimensional structural schematic view of the first embodiment of the microwave oven according to the present invention;

FIG. 2 is a schematic diagram of an exploded structure of the microwave oven shown in FIG. 1 at a first viewing angle;

Fig. 3 is a schematic diagram of an exploded structure of the microwave oven shown in Fig. 1 from a second viewing angle;

Fig. 4 is a schematic bottom view of the microwave oven shown in Fig. 1;

Fig. 5 is a top view structural diagram of the liner shown in Fig. 3;

Fig. 6 is a schematic cross-sectional structural view of the microwave oven shown in Fig. 1;

Fig. 7 is a schematic perspective view of the second embodiment of the microwave oven according to the present invention;

Fig. 8 is a schematic diagram of the three-dimensional structure of the microwave oven shown in Fig. 7 after the shell is removed;

FIG. 9 is a schematic side view of the structure shown in FIG. 8 .

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 to Fig. 9 is:

1 shell, 11 installation cavity, 12 electrical cavity, 13 bottom plate, 131 air inlet hole, 14 top plate, 141 air outlet hole, 15 side plate, 2 inner tank, 21 upper plate, 211 air outlet, 22 air inlet, 3 fan, 31 motor, 32 centrifugal wind wheels, 4 legs, 5 air guide channels, 51 first air guide cover, 52 second air guide cover, 6 air outlet cover, 7 electrical components.

The arrows shown in the figure indicate the flow direction of the fluid.

Detailed ways

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

The microwave oven according to some embodiments of the present invention will be described below with reference to FIGS. 1 to 9 .

As shown in FIGS. 1 to 9 , the microwave oven provided by the present invention includes: a casing 1 , an inner container 2 , electrical components 7 , a fan 3 and a plurality of feet 4 .

Specifically, the casing 1 has an installation cavity 11 and an electrical appliance cavity 12, and the bottom plate 13 of the casing 1 is provided with an air inlet hole 131, and the casing 1 is also provided with an air outlet hole 141; the liner 2 is installed in the installation cavity 11, and the liner 2 2 has a receiving chamber, and the liner 2 is provided with an air inlet 22 and an air outlet 211; the electrical components 7 are arranged in the electrical chamber 12; the fan 3 is installed in the electrical chamber 12 and is located at the air inlet 131, and is used Air is supplied in the chamber 12 ; a plurality of feet 4 are arranged on the bottom plate 13 ; wherein, the accommodating chamber communicates with the air inlet 22 and the air outlet 211 respectively, and the air outlet 141 communicates with the air outlet 211 .

In the microwave oven provided by the present invention, the air inlet 131 is arranged on the bottom plate 13 of the shell 1, and the bottom plate 13 is provided with a leg 4, which is supported between the bottom plate 13 and the supporting surface of the microwave oven through the leg 4, so that the bottom plate 13 and the microwave oven are connected to each other. A constant gap is maintained between the supporting surfaces of the microwave oven to ensure that sufficient air volume enters the electrical cavity 12 from the air inlet 131, thereby improving the heat dissipation effect of the microwave oven and ensuring the safety of the product.

In one embodiment of the present invention, as shown in FIG. 3 , FIG. 6 and FIG. 7 , the microwave oven further includes: an air guide channel 5 , specifically, the air guide channel 5 is arranged in the electrical cavity 12 , and the first air guide channel 5 The port communicates with the fan 3 , the second port communicates with the air inlet 22 , and the electrical components 7 are arranged in the air guide channel 5 .

In this embodiment, by setting the air guide channel 5 in the microwave oven, and making the electrical components 7 (such as transformers and magnetrons) in the microwave oven located in the air guide channel 5, the air guide channel 5 can guide the cold wind in the microwave oven. Medium circulation to dissipate heat from the electrical components 7 in the microwave oven, thereby ensuring that the heating electrical components 7 are effectively cooled during the working process of the microwave oven, thereby slowing down the aging speed of the electrical components 7 in the microwave oven and prolonging the service life of the product.

In one embodiment of the present invention, as shown in FIG. 3 , FIG. 6 and FIG. 7 , the air guide channel 5 includes: a first air guide cover 51 and a second air guide cover 52 .

Specifically, the first port of the first wind guide 51 communicates with the fan 3; the first port of the second wind guide 52 communicates with the second port of the first wind guide 52, and the second port communicates with the air inlet 22 There is an interval between the second port of the first wind guide 51 and the first port of the second wind guide 52 .

In one embodiment of the invention, electrical components 7 are arranged at intervals.

In this embodiment, since the magnetron and the transformer of the microwave oven are easy to generate heat during the working process, and the heat generated is relatively high, the magnetron of the microwave oven can be arranged in the first wind guide cover 51, and the transformer can be arranged in At the gap between the second port of the first wind guide 51 and the first port of the second wind guide 52, the cold wind introduced by the fan 3 enters the air guide channel 5 from the first port of the first wind guide 51 , the cold wind flows in the first air guide cover 51 to cool the magnetron located in the first air guide cover 51, and then flows out through the second port of the first air guide cover 51 into the aforementioned gap to cool the magnetron. Tube cooling, the temperature of the cold air after cooling the transformer and the magnetron in turn increases significantly to become high-temperature air, here the high-temperature air is introduced into the second wind guide hood 52, and enters the inner tank 2 through the second wind guide cover 52 to heat the food in the accommodating cavity, since the air guide channel 5 guides the heat out of the electrical cavity 12, thereby avoiding the temperature rise of other electrical components 7 caused by high-temperature air staying in the electrical cavity 12 In addition, the setting of this structure can also allow the air in the accommodating cavity to circulate, so that the circulating air can bring out the peculiar smell left by cooking in the accommodating cavity, thereby improving the quality of the product. At the same time, it also improves the heat recovery and utilization rate of the product, thereby improving the energy efficiency of the product.

In one embodiment of the present invention, preferably, the height of the supporting feet 4 is 5mm-15mm.

In this embodiment, on the one hand, the height of the supporting feet 4 is not less than 5mm, which effectively prevents the gap between the bottom plate 13 of the microwave oven and the supporting surface of the microwave oven from being too small, resulting in insufficient cold air entering the microwave oven, causing damage to electrical appliances. The heat dissipation effect of the element 7 is not ideal. On the other hand, if the height of the supporting legs 4 is not greater than 15mm, on the premise of ensuring sufficient cold air entering the microwave oven, the supporting stability of the microwave ovens will be prevented from being too high. Considering the heat dissipation requirements and support stability requirements for the microwave oven, the height of the supporting legs 4 is set to be 5 mm to 15 mm.

In one embodiment of the present invention, preferably, the air inlet hole 131 is disposed at the front of the bottom plate 13 .

In this embodiment, for the built-in microwave oven, the microwave oven is arranged in the cabinet, and the cold air outside the cabinet enters between the bottom plate 13 of the microwave oven and the support surface of the microwave oven from the front of the microwave oven, and the air inlet 131 is located on the bottom plate 13 The front part of the cabinet effectively shortens the path for the cold air outside the cabinet to reach the air inlet 131, thereby reducing the wind resistance in the process of the cold air outside the cabinet reaching the air inlet 131. Relatively speaking, the fan 3 is improved. The air suction efficiency also increases the air intake of the microwave oven, thereby improving the heat dissipation efficiency of the product.

In one embodiment of the present invention, as shown in FIG. 2 , FIG. 6 and FIG. 7 , the fan 3 includes: a motor 31 and a centrifugal fan wheel 32 .

Specifically, the motor 31 is arranged in the electric appliance cavity 12 ; the centrifugal wind wheel 32 is connected with the output shaft of the motor 31 .

In this embodiment, the air inlet direction of the centrifugal wind wheel 32 is perpendicular to the air outlet direction. Since the air inlet hole 131 is arranged on the bottom plate 13 in this solution, after the cold wind enters the microwave oven along the up and down direction, the wind direction needs to be changed to move forward and backward. direction into the air guide channel 5, then by setting the centrifugal wind wheel 32 so that the cold wind enters the microwave oven along the up and down, and discharges from the centrifugal wind wheel 32 along the front and rear directions, the change of the wind direction is realized without increasing the wind resistance, thereby ensuring Product cooling efficiency.

In one embodiment of the present invention, the microwave oven further includes: an air outlet cover 6, specifically, the air outlet cover 6 is arranged on the shell 1, and the first port of the air outlet cover 6 communicates with the air outlet hole 141, and the second The port is located above the oven door of the microwave oven.

In this embodiment, the cold air enters into the microwave oven and becomes high-temperature air after the electrical components 7 dissipate heat. The second port discharges the microwave oven, because the cold air on the outside of the cabinet enters from the gap between the support surface of the microwave oven and the bottom plate 13 of the microwave oven in this solution, that is, the cold air inlet path is located below the oven door of the microwave oven. The second port of the microwave oven is arranged above the oven door of the microwave oven, so that the high-temperature air, which is lighter in quality than the cold air, continues to rise after being discharged through the outlet hood 6, thereby reducing the probability that the high-temperature air is sucked into the microwave oven again by the fan 3, and then Further ensure the heat dissipation efficiency of the product.

In one embodiment of the present invention, as shown in FIG. 2, FIG. 3 and FIG. .

In this embodiment, for the scheme that the wind guide cover is arranged on the top plate 14 of the housing 1, the air outlet 211 is arranged on the top plate 14 of the housing 1, so that the distance between the air outlet hole 141 and the wind guide cover is shortened, thereby The stagnation time of heat in the microwave oven is reduced, and the heat dissipation efficiency of the product is improved. In addition, since the cold air outside the cabinet enters from the gap between the support surface of the microwave oven and the bottom plate 13 of the microwave oven in this solution, that is, the air intake path of the cold air is located at Below the furnace door of the microwave oven, the air outlet hood 6 and the air outlet 141 are arranged on the top plate 14 of the casing 1, so that the relatively cold air is lighter in quality and the high temperature air continues to rise after being discharged through the air outlet hood 6, thereby reducing the temperature. The probability of high temperature air being sucked into the microwave oven again by the fan 3 further ensures the heat dissipation efficiency of the product. Of course, the setting position of the air outlet 141 is not unique, and it can also be set on the side plate of the casing 1 .

In an embodiment of the present invention, preferably, as shown in FIG. 5 , the air outlet 211 is disposed on the upper plate 21 of the inner tank 2 .

In this embodiment, the air outlet 211 is arranged on the upper plate 21 of the liner 2, for the scheme that the air outlet 141 is arranged on the top plate 14 of the casing 1, this shortens the distance between the air outlet 211 and the air outlet 141. In this solution, the cold air outside the cabinet enters from the gap between the support surface of the microwave oven and the bottom plate 13 of the microwave oven, that is, the cold air enters the microwave oven. The air path is located below the oven door of the microwave oven. By setting the air outlet hood 6 and the air outlet 141 on the top plate 14 of the shell 1, the air outlet 211 is arranged on the upper plate 21 of the liner 2, so that the relative cold air In other words, the light-weight high-temperature air continues to rise after being discharged from the air outlet hood 6, thereby reducing the probability of high-temperature air being sucked into the microwave oven again by the fan 3, and further ensuring the heat dissipation efficiency of the product.

The first embodiment of the microwave oven provided by the present invention is mainly used as an embedded microwave oven. As shown in Figures 1 to 7, an air outlet is arranged on the top plate 14 of the casing 1, and the air outlet cover 6 is arranged on the top plate 14, and the cold wind passes through the fan. 3 Enter the microwave oven from the bottom plate 13 of the microwave oven, and dissipate heat from the electrical components 7 installed in the air guide channel 5 through the air guide channel 5. After the cold air absorbs the heat of the electrical component 7, the temperature rises and becomes high-temperature air. From the air guide channel 5 through the air inlet 22 into the accommodation cavity, the food in the accommodation cavity is heated. The setting of this structure improves the heat recovery and utilization rate of the product, thereby improving the energy efficiency of the product. In addition, the product has no effect on food. After the heating is completed, the high-temperature air generated by heat dissipation continues to be introduced into the housing chamber, and is discharged through the air outlet 211, the air outlet hole 141 and the air outlet cover 6 in sequence, thereby promoting the air circulation in the housing chamber, so that the high-temperature air will stay in the housing chamber. The odor left by cooking in the accommodating cavity is brought out, thereby improving the comfort of the product.

The second embodiment of the microwave oven provided by the present invention is mainly used as a non-embedded microwave oven, as shown in Figure 8 and Figure 9, the heat dissipation path after the cold air enters the microwave oven is the same as that of the first embodiment of the microwave oven according to the present invention, which is not mentioned here To repeat, however, since the air circulation around the non-embedded microwave oven is not affected by the cabinet, the structure of the air outlet cover 6 can be eliminated in this embodiment, and the high-temperature air in the accommodating cavity is discharged from the air outlet 211, and directly passes through the housing. The set air outlet 141 can be discharged into the environment.

To sum up, in the microwave oven provided by the present invention, the air inlet hole is arranged on the bottom plate of the casing, and a foot is provided on the bottom plate, and the foot is supported between the bottom plate and the supporting surface of the microwave oven, so that the support between the bottom plate and the microwave oven Keep a constant gap between the surfaces to ensure that there is enough air volume to enter the electrical cavity from the air inlet, thereby improving the heat dissipation effect of the microwave oven and ensuring the safety of the product.

Specifically, the cooling fan of the existing microwave oven is arranged at the rear of the microwave oven. For an embedded microwave oven equipped with this structure, its cooling effect is highly dependent on the cabinet structure and the installation relationship between the cabinet and the microwave oven. In the case of inappropriate cabinet design, it is easy to cause safety accidents. In the microwave oven provided by the present invention, the air inlet hole is arranged on the bottom plate of the shell, and a foot is provided on the bottom plate, which is supported between the bottom plate and the supporting surface of the microwave oven. In order to maintain a constant gap between the bottom plate and the supporting surface of the microwave oven, to ensure that there is enough air volume to enter the electrical cavity from the air inlet hole, thereby reducing the impact of the cooling effect of the microwave oven caused by improper design of the cabinet, and further Ensure product safety.

In the present invention, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more than two, unless otherwise Clearly defined. The terms "installation", "connection", "connection", "fixed" and other terms should be interpreted in a broad sense, for example, "connection" can be fixed connection, detachable connection, or integral connection; "connection" can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear" etc. is based on the orientation or positional relationship shown in the drawings, and is only for convenience The present invention is described and simplified descriptions do not indicate or imply that the referred device or unit must have a specific orientation, be constructed and operate in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the present invention In at least one embodiment or example of . 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.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a micro-wave oven, is characterized in that, comprising:

Shell, described shell has installation cavity and electric apparatus chamber, and the base plate of described shell arranges fresh air inlet, and described shell is also provided with exhaust vent;

Inner bag, described inner bag is arranged in described installation cavity, and described inner bag has container cavity, described inner bag is provided with air inlet and air outlet;

Electric elements, described electric elements are arranged in described electric apparatus chamber;

Blower fan, described assembling in described electric apparatus chamber, and is positioned at described fresh air inlet place, for blowing in described electric apparatus chamber; With

Multiple leg, multiple described leg is arranged on described base plate;

Wherein, described container cavity is connected with described air outlet with described air inlet respectively, and described exhaust vent is connected with described air outlet.

2. micro-wave oven according to claim 1, is characterized in that, also comprises:

Air-guiding aisle, described air-guiding aisle is arranged in described electric apparatus chamber, and described air-guiding aisle first port is connected with described blower fan, and the second port is connected with described air inlet, and described electric elements are arranged in described air-guiding aisle.

3. micro-wave oven according to claim 2, is characterized in that,

Described air-guiding aisle comprises:

First wind scooper, the first port of described first wind scooper is connected with described blower fan; With

Second wind scooper, the first port of described second wind scooper is connected with the second port of described first wind scooper, and the second port is connected with described air inlet;

Wherein, between the second port of described first wind scooper and the first port of described second wind scooper, there is interval.

4. micro-wave oven according to claim 3, is characterized in that,

Described electric elements are arranged on described interval.

5. micro-wave oven according to claim 1, is characterized in that,

The height of described leg is 5mm ~ 15mm.

6. micro-wave oven according to claim 1, is characterized in that,

Described fresh air inlet is arranged on the front portion of described base plate.

7. micro-wave oven according to any one of claim 1 to 6, is characterized in that,

Described blower fan comprises:

Motor, described motor is arranged in described electric apparatus chamber; With

Centrifugal wind wheel, described centrifugal wind wheel is connected with the output shaft of described motor.

8. micro-wave oven according to claim 7, is characterized in that, also comprises:

Outlet housing, described outlet housing is arranged on the housing, and the first port of described outlet housing is connected with described exhaust vent, and the second port is positioned at the top of the fire door of described micro-wave oven.

9. micro-wave oven according to claim 8, is characterized in that,

Described air outlet is arranged on the upper plate of described inner bag.

10. micro-wave oven according to claim 7, is characterized in that,

Described exhaust vent is arranged on the top board of described shell, and/or described exhaust vent is arranged on the side plate of described shell.