CN216675517U - Fan cover of oven and oven - Google Patents

Abstract

The utility model relates to the technical field of ovens, and discloses a fan cover of an oven and the oven, wherein an air inlet and an air outlet are arranged on the fan cover of the oven, the air inlet is arranged opposite to a fan in the oven, the area of the air inlet is 1-1.1 times of that of a circular area formed when a fan blade of the fan rotates, the air outlet is arranged in the circumferential direction of the air inlet and is positioned outside the circular area with the center of the fan as a circle and the length twice of the fan blade as a radius, so that the position of the air outlet is reasonably arranged, the phenomenon of air return is avoided, the circumferential uniform air outlet of the fan cover is formed, the stable flow field of the middle air inlet is formed, and the uniform flow field is formed inside the oven, so that the food is more uniformly colored by the oven. This oven is through the fan cover of foretell oven for the phenomenon of air return can not take place for air inlet and air-out, makes the even flow field of formation in the oven, and then makes the oven comparatively even to the coloring of food.

Description

Fan cover of oven and oven

Technical Field

The utility model relates to the technical field of ovens, in particular to a fan cover of an oven and the oven.

Background

The electric oven is an electric heating appliance for baking food by utilizing radiation heat emitted by an electric heating element, and can be used for making baked chicken, baked duck, baked bread, cakes and the like. Current oven includes the cavity, fan cover and fan, fan cover establishes on the back wall of cavity and is located the cavity, inject the tuber pipe between the back wall of fan cover and cavity, be provided with air intake and the air outlet that switches on with the wind pipe on the fan cover, air in the cavity forms high velocity air under the effect of fan, then the air intake that the air current passes through fan cover flows in the wind channel, discharge to the cavity in the air outlet through fan cover, toast the food in the cavity, so reciprocal, realize the circulation flow of air current, thereby guarantee the culinary art effect of oven.

The size of the air inlet and the air outlet position of the existing fan cover are unreasonable, the air inlet cannot ensure only air inlet, partial air return, unreasonable air outlet air speed distribution, uneven space flow field of the oven, and even when multilayer baking in the oven is caused, the positions are cooked fast and slow, and food is not colored uniformly. Therefore, it is desirable to design a fan guard for an oven to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fan cover of an oven and the oven, and solves the technical problem that the size of an air inlet and the position of an air outlet of an existing fan cover are unreasonable, so that the space flow field of the oven is uneven.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a fan cover of an oven, which is provided with:

the air inlet is arranged opposite to the fan in the oven, and the area of the air inlet is 1-1.1 times of the area of a circular area formed when the fan blades of the fan rotate; and

and the air outlet is arranged in the circumferential direction of the air inlet and is positioned in a circular area with the center of the fan as a circle and the two times of the length of the fan blades as the radius.

The fan of oven covers and is provided with air intake and air outlet, the air intake sets up with the fan in the oven relatively, the area of air intake is 1-1.1 times of the circular region's that forms when the flabellum of fan rotates, the air outlet sets up in the circumference of air intake, and be located the center that uses the fan as the centre of a circle, use the twice of the length of flabellum outside the circular region of radius, thereby make the position of air outlet arrange rationally, make the air intake only the air inlet, the air outlet only the air-out, the phenomenon of return air can not take place, the even air-out of circumference that forms the fan cover, the stable flow field of middle air inlet, the inside even flow field that forms of oven, make the oven more even to the coloring of food.

As a preferable scheme of the fan guard of the oven, an air outlet direction of the air outlet and an air inlet direction of the air inlet form an included angle, and the air outlet direction is gradually blown away from the air inlet direction along a radial direction of the air inlet.

The air outlet direction of air outlet and the air inlet direction of air intake are the contained angle, and the air outlet direction blows towards keeping away from the air intake direction along the radial direction of air intake gradually for the air outlet air-out can not flow back perpendicularly, has increased the speed of air-out, has improved the air supply distance.

As a preferable scheme of the fan guard of the oven, an included angle between an air outlet direction of the air outlet and an air inlet direction of the air inlet is 30 to 45 degrees.

The contained angle between the air-out direction of air outlet and the air inlet direction of air intake is 30 ~ 45, and in this within range, can avoid the air-out backward flow, avoids moreover because inclination is too big, reduces the distance of the air supply of perpendicular to air intake direction.

As a preferable scheme of the fan cover of the oven, the area of the air inlet is 1.5-1.7 times that of the air outlet.

The area of the air inlet is 1.5-1.7 times of the area of the air outlet, and the area of the air inlet is larger than the area of the air outlet due to the fact that the air quantity of the inlet air and the air quantity of the outlet air are equal, so that the air speed of the air outlet is larger than that of the air inlet, the air outlet speed is increased, and the air supply distance is increased.

As a preferable mode of the fan cover of the oven, an area of the air outlet of the upper half portion of the fan cover is 1.2 to 1.5 times an area of the air outlet of the lower half portion of the fan cover.

Because the number of piles that the oven set up the overware in the upper half of fan guard is more than the number of piles that the fan guard the latter half set up the overware in the oven, the area of the air outlet through the upper half of fan guard is 1.2 ~ 1.5 times of the area of the air outlet of the latter half for the flow field everywhere of fan guard is comparatively even, and then flow field on every layer of overware in the oven comparatively even, thereby make comparatively even to the food baking in each layer of overware in the oven.

As a preferable mode of the fan guard of the oven, the air outlet includes:

the first air outlet is positioned at the top of the fan cover;

the second air outlet is positioned at the bottom of the fan cover; and

the third air outlets are positioned at two sides of the fan cover, and the third air outlet positioned at the upper half part of the same side of the fan cover is a third upper half part air outlet; and the third air outlet positioned at the lower half part of the same side edge of the fan cover is a third lower half part air outlet.

The setting of above-mentioned air outlet for a plurality of positions carry out the air-out in the oven, make the air-out that gets into in the oven comparatively even, and then color more evenly to the food in the oven.

As a preferable mode of the fan guard of the oven, the first air outlet, the second air outlet, and the third air outlet are respectively symmetrical with respect to a vertical center line L1 of the fan guard.

Above-mentioned setting is more even to the air-out in the oven for coloring in the oven is more even.

As a preferable mode of the fan guard of the oven, the third upper half air outlet is provided between a horizontal center line L2 of the fan guard and a horizontal center line L3 of the upper half of the fan guard.

The arrangement can evenly bake the food in the baking tray on the upper half part of the oven.

As a preferable mode of the fan guard of the oven, the third lower half outlet is symmetrical with respect to a horizontal center line L4 of the lower half of the fan guard.

The arrangement can bake food on the baking tray at the bottom layer of the oven, and the flow field of the lower half part of the fan cover is uniform.

The utility model also provides an oven, which comprises the fan cover of the oven.

This oven is through the fan cover of foretell oven for the phenomenon of air return can not take place for air inlet and air-out, makes the even flow field of formation in the oven, and then makes the oven comparatively even to the coloring of food.

The utility model has the beneficial effects that:

the fan cover of the oven is provided with the air inlet and the air outlet, the air inlet and a fan in the oven are arranged oppositely, the area of the air inlet is 1-1.1 times of that of a circular area formed when a fan blade of the fan rotates, the air outlet is arranged in the circumferential direction of the air inlet and is positioned outside the circular area which takes the center of the fan as the circle center and takes twice of the length of the fan blade as the radius, so that the position of the air outlet is reasonably arranged, the air inlet only supplies air, the air outlet only supplies air, the phenomenon of return air cannot occur, the circumferential uniform air outlet of the fan cover is formed, the stable flow field of the middle air inlet is formed, and a uniform flow field is formed inside the oven, so that the food can be more uniformly colored by the oven.

According to the oven provided by the utility model, air return phenomenon can not occur when air is fed and discharged through the fan cover of the oven, so that a uniform flow field is formed in the oven, and the food is uniformly colored by the oven.

Drawings

FIG. 1 is a first schematic structural view of a fan guard of an oven provided by the present invention;

fig. 2 is a schematic structural diagram of a fan guard of an oven provided by the utility model.

In the figure:

1. a fan guard;

11. an air inlet; 12. an air outlet; 13. a front wall; 14. a peripheral wall; 15. flanging; 16. a lug;

121. a first air outlet; 122. a second air outlet;

1231. a third upper half air outlet; 1232. and the air outlet of the third lower half part.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides an oven, the oven includes the cavity, fan guard and fan, fan guard establishes on the back wall of cavity and is located the cavity, inject the tuber channel between the back wall of fan guard and cavity, as shown in fig. 1 and fig. 2, be provided with air intake 11 and air outlet 12 that switch on with the wind channel on the fan guard 1, the fan sets up in the wind channel and sets up with air intake 11 relatively, the air in the cavity forms high velocity air under the effect of fan, then the air current flows into in the wind channel through air intake 11 of fan guard 1, discharge in the cavity through air outlet 12 of fan guard 1, toast the food in the cavity, so reciprocal, realize the circulation flow of air current, thereby guarantee the culinary art effect of oven.

Specifically, as shown in fig. 1 and 2, the fan guard 1 includes a front wall 13, a peripheral wall 14, and a flange 15, the front wall 13 of the fan guard 1 is formed to be arranged in a vertical plane and to be disposed in parallel with a rear wall of the cavity, and the air inlet 11 is disposed at a central position of the front wall 13. The peripheral wall 14 of the fan cover 1 forms a ring shape extending along the circumferential direction of the front wall 13, the peripheral wall 14 of the fan cover 1 is located behind the front wall 13 (the side of the fan cover 11 close to the fan), one side of the peripheral wall 14 of the fan cover 1 is connected with the outer periphery of the front wall 13 of the fan cover 1, and the peripheral wall 14 of the fan cover 1 extends from front to back to form a ring-shaped plate inclined to the horizontal direction so that the rear side of the fan cover 1 forms an opening, so that an air channel is formed between the fan cover 1 and the rear wall of the cavity. The outlet 12 is provided in the peripheral wall 14.

Further, the flange 15 is formed into a ring shape extending along the circumferential direction of the circumferential wall 14 of the fan cover 1, the inner ring of the flange 15 is connected with one side of the circumferential wall 14 of the fan cover 1 away from the front wall 13, the outer ring of the flange 15 is provided with a plurality of lugs 16, in the embodiment, two lugs 16 are respectively arranged on two opposite sides of the outer ring of the flange 15, and mounting holes are arranged on the lugs 16, and the fan cover 1 is mounted on the inner side of the rear wall of the cavity by penetrating through the mounting holes through fixing pieces.

In order to avoid the phenomenon of uneven flow field in the oven, the area of the air inlet 11 is 1-1.1 times of the area of a circular area formed when the fan blades of the fan rotate, the air outlet 12 is arranged in the circumferential direction of the air inlet 11 and is positioned outside the circular area which takes the center of the fan as a circle and takes the twice of the length of the fan blades as the radius, so that the position of the air outlet 12 is reasonably arranged, the air inlet 11 only supplies air, the air outlet 12 supplies air, the phenomenon of return air cannot occur, the circumferential uniform air outlet of the fan cover 1 is formed, the stable flow field of middle air inlet is formed, and the uniform flow field is formed inside the oven, so that the oven can more uniformly color food.

Alternatively, the area of the air inlet 11 may be equal to the area of the circular area formed when the fan blades of the fan rotate, or the area of the air inlet 11 is slightly larger than the area of the circular area formed when the fan blades of the fan rotate, and the area of the air inlet 11 is between 1 and 1.1 times the area of the circular area formed when the fan blades of the fan rotate.

Optionally, because the peripheral wall 14 is obliquely arranged, an included angle is formed between the air outlet direction of the air outlet 12 and the air inlet direction of the air inlet 11, and the air outlet direction is blown gradually towards the direction far away from the air inlet 11 along the radial direction of the air inlet 12, so that the air outlet of the air outlet 12 cannot vertically flow back, the air outlet speed is increased, and the air supply distance is increased.

Preferably, the included angle between the air outlet direction of the air outlet 12 and the air inlet direction of the air inlet 11 is 30 degrees to 45 degrees, that is, the included angle between the peripheral wall 14 and the front wall 13 is 30 degrees to 45 degrees, in this range, the air outlet backflow can be avoided, and the phenomenon that the distance of air supply perpendicular to the direction of the air inlet 11 is reduced due to too large inclination angle is avoided.

Optionally, the area of the air inlet 11 is 1.5 to 1.7 times the area of the air outlet 12, and the area of the air inlet 11 is larger than the area of the air outlet 12 because the air volume of the inlet air is equal to that of the outlet air, so that the air speed of the air outlet 12 is larger than that of the air inlet 11, the air outlet speed is increased, and the air supply distance is increased.

Because the number of piles that the oven set up the overware in the upper half of fan guard 1 is more than the number of piles that the fan guard 1 latter half set up the overware in the oven, the area of the air outlet 12 through the upper half of fan guard 1 is 1.2 ~ 1.5 times of the 12 areas of the air outlet of latter half for the flow field is comparatively even everywhere in fan guard 1, and then flow field on every layer of overware in the oven comparatively even, thereby make comparatively even to the food baking in every layer of overware in the oven.

As shown in fig. 1, the air outlet 12 includes a first air outlet 121, a second air outlet 122 and a third air outlet, the first air outlet 121 is located on the peripheral wall 14 at the top of the fan guard 1, the second air outlet 122 is located on the peripheral wall 14 at the bottom of the fan guard 1, the third air outlet is located on the peripheral walls 14 at two sides of the fan guard 1, and the third air outlet located at the upper half of the peripheral wall 14 at the same side of the fan guard 1 is a third upper half air outlet 1231; the third air outlet located on the same side of the fan guard 1 and in the lower half of the peripheral wall 14 is a third lower half air outlet 1232. The setting of above-mentioned air outlet 12 for a plurality of positions carry out the air-out in the oven, make the air-out that gets into in the oven comparatively even, and then color more evenly to the food in the oven.

Preferably, the first outlet opening 121, the second outlet opening 122 and the third outlet opening are respectively symmetrical about a vertical center line L1 of the fan guard 1. The air-out of above-mentioned setting in to the oven is more even for color in the oven is more even.

Optionally, the third upper half portion air outlet 1231 is disposed between the horizontal centerline L2 of the fan guard 1 and the horizontal centerline L3 of the upper half portion of the fan guard 1 to provide uniform cooking of the food in the oven in the upper half portion of the oven.

Optionally, the third lower half outlet 1232 is symmetrical about the horizontal centerline L4 of the lower half of the fan guard 1. The arrangement can bake food on the baking tray at the bottom layer of the oven, and the flow field of the lower half part of the fan cover 1 is uniform.

In this embodiment, use the geometric centre of fan guard 1 as the center, the diameter of the flabellum of fan is 160mm, and the diameter of air intake 11 sets up to 160mm, draws the circle that the diameter is 320mm at the geometric centre of using fan guard 1 as the original point, sets up air outlet 12 outside the region that the diameter is 320mm, can not trompil in diameter 160mm to 320mm region, and the backward flow phenomenon can appear in this region, opens air outlet 12 promptly and can the air inlet, opens air inlet 11 and can the air-out.

Alternatively, the air inlet 11 may be a round hole or a plurality of small holes, and the plurality of small holes are arranged in a circular area with the diameter of 160mm and centered on the geometric center of the fan guard 1.

The fan guard 1 of the present embodiment is applicable to a range including, but not limited to, an oven, and can be widely applied to other products, such as a small refrigerator, a semiconductor cooling/heating product, and the like.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a fan guard of oven which characterized in that is provided with on fan guard (1) of oven:

the air inlet (11), the air inlet (11) is arranged opposite to the fan in the oven, and the area of the air inlet (11) is 1-1.1 times of the area of a circular area formed when the fan blades of the fan rotate; and

the air outlet (12), air outlet (12) set up in the circumference of air intake (11), and be located with the center of fan is circular, with the twice of the length of flabellum is outside the circular region of radius.

2. The fan guard of claim 1, wherein an air outlet direction of the air outlet (12) forms an angle with an air inlet direction of the air inlet (11), and the air outlet direction is gradually blown away from the air inlet (11) along a radial direction of the air inlet (11).

3. The fan guard of claim 2, wherein the angle between the air outlet direction of the air outlet (12) and the air inlet direction of the air inlet (11) is 30 ° to 45 °.

4. The fan guard of claim 1, wherein the area of the air inlet (11) is 1.5 to 1.7 times the area of the air outlet (12).

5. The oven fan guard according to claim 1, characterized in that the area of the air outlet (12) of the upper half of the fan guard (1) is 1.2 to 1.5 times the area of the air outlet (12) of the lower half of the fan guard (1).

6. The fan guard of an oven according to any of claims 1 to 5, characterized in that said air outlet (12) comprises:

a first air outlet (121) located at the top of the fan guard (1);

a second air outlet (122) located at the bottom of the fan guard (1); and

the third air outlets are positioned at two sides of the fan cover (1), and the third air outlet positioned at the upper half part of the same side edge of the fan cover (1) is a third upper half part air outlet (1231); and a third air outlet positioned at the lower half part of the same side edge of the fan cover (1) is a third lower half part air outlet (1232).

7. The fan guard of the oven according to claim 6, characterized in that said first outlet mouth (121), said second outlet mouth (122) and said third outlet mouth are respectively symmetrical with respect to a vertical centre line L1 of the fan guard (1).

8. The fan guard of claim 6, wherein the third upper half air outlet (1231) is disposed between a horizontal centerline L2 of the fan guard (1) and a horizontal centerline L3 of the upper half of the fan guard (1).

9. The fan guard of claim 7, characterized in that the third lower half outlet opening (1232) is symmetrical about a horizontal centerline L4 of the lower half of the fan guard (1).

10. An oven characterized by comprising a fan guard of the oven of any of claims 1-9.

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