Hot air cover and air duct of oven

Abstract

The utility model discloses a hot air cover of an oven, which is arranged on the inner side surface of the rear part of an inner container of the oven and is used for hot air convection, the hot air cover comprises a cover body, a plurality of strip-shaped air inlet holes are arranged on the cover body, and the plurality of strip-shaped air inlet holes are arranged in a radial manner; and a plurality of air outlet areas are arranged on the peripheral edge of the cover body. The hot air cover is provided with the strip-shaped air inlet holes which are arranged in a radial mode, so that air entering from the air inlet holes is concentrated at the positions, close to the draught fan, of the air inlet holes, the draught fan can rotate to suck air, the rotating air speed of the draught fan is overlapped, the convection speed of hot air between an inner container of the oven and an air channel is increased, and therefore the hot air convection effect in the cooking process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ovens, and in particular relates to a hot air hood and an air duct of an oven. Background Art

[0002] The oven bakes food by radiant heat emitted by the heating element. Existing ovens have a fan installed on the back of the inner pot, and the hot air hood is arranged on the fan and located in the inner pot cavity. An air duct is formed between the hot air hood and the back of the inner pot cavity. The hot air hood is provided with an air inlet and an air outlet. Under the rotation of the fan, air flows into the air duct through the air inlet, and after being heated, flows into the knife cavity from the air outlet, realizing hot air convection and dispersing the hot air in the cavity, thereby baking food.

[0003] The existing hot air hood is rectangular, with several circular air inlet holes in the middle of the front end and circular air outlet holes in the four corners. When the oven is working, the air in the cavity flows from the air inlet holes into the air duct. However, the conventional hot air hood does not take into account the correspondence between the fan rotation direction and the air inlet direction, resulting in poor hot air convection effect. Utility Model Content

[0004] The purpose of the utility model is to provide a hot air hood and an air duct of an oven, which are used to solve the technical problem of poor hot air convection effect in the prior art.

[0005] The utility model provides a hot air hood of an oven by the following technical solutions:

[0006] A hot air hood of an oven is installed on the rear inner side of the oven inner tank and is used for hot air convection. The hot air hood comprises a hood body with a plurality of elongated air inlet holes formed on the hood body. The elongated air inlet holes are arranged radially. The outer peripheral edge of the hood is provided with a plurality of air outlet areas.

[0007] In one embodiment, the strip-shaped air inlet hole is generally arc-shaped or curved, and the bending direction is the same as the rotation direction of the fan.

[0008] In one embodiment, the elongated air inlet hole is provided with a first end and a second end, the second end is close to the middle of the cover body, and the size of the elongated air inlet hole gradually decreases from the first end toward the second end.

[0009] In one embodiment, an arc-shaped transition portion is provided between the first end and the second end of the strip-shaped air inlet hole.

[0010] In one embodiment, the first end is provided with a bending portion.

[0011] In one embodiment, the plurality of elongated air inlet holes are arranged at equal intervals and are in a turbine shape.

[0012] In one embodiment, a recessed portion is provided on the top edge of the cover body, and one of the air outlet areas is located outside the recessed portion.

[0013] In one embodiment, the cover body is provided with a boss protruding outward, and the elongated air inlet hole is opened on the boss.

[0014] In one embodiment, the cover body is provided with a plurality of positioning holes.

[0015] The utility model also provides an air duct of an oven, comprising the hot air hood described above; a back plate, wherein a heating chamber is formed between the back plate and the hot air hood; an air outlet is formed by covering the air outlet area of the back plate and the outer peripheral edge of the hot air hood; a heating element, wherein the heating element is installed in the heating chamber; and a fan, wherein the fan is installed in the heating chamber, and the elongated air inlet hole is directly opposite to the fan.

[0016] Compared with the prior art, the dual hot air circulation device of the present invention has the following beneficial effects: the hot air hood of the present invention is provided with strip-shaped air inlet holes and arranged radially, so that the wind entering from the air inlet holes is concentrated at the position of the air inlet holes close to the fan, which helps the fan to rotate and absorb air. At the same time, in conjunction with the rotation direction of the fan, it can be superimposed with the fan rotation wind speed, thereby increasing the convection speed of the hot air between the inner tank of the oven and the air duct, thereby improving the hot air convection effect during cooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the hot air hood of the oven of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the hot air hood of the oven of the utility model from the main viewing angle;

[0020] Figure 3 This is a schematic structural diagram of the hot air hood of the oven of the utility model from another perspective;

[0021] Figure 4 yes Figure 2 A magnified schematic diagram of section A in the middle, including the air inlet;

[0022] Figure 5 This is a schematic diagram of the structure of the oven of the utility model, in which the hot air cover is mounted on the back plate and assembled into an air duct;

[0023] Figure 6 yes Figure 5 Schematic diagram of the air duct explosion shown.

[0024] Markings in the figure: 1. Cover body; 11. Long strip air inlet hole; 111. First end; 1111. Bend portion; 112. Second end; 113. Arc portion; 12. Air outlet area; 13. Boss; 14. Positioning hole; 15. Recessed portion; 16. Air outlet; 2. Back panel; 3. Heating element; 4. Fan. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0027] like Figure 1-6 As shown, an embodiment of the present invention provides a hot air hood of an oven, which is installed on the inner side of the rear part of the oven inner tank. It is combined with the back plate to form a heating chamber. The cold air in the inner tank enters the heating chamber through the hot air hood, and the heated hot air enters the inner tank, realizing hot air convection, which is used to heat and cook the food in the oven inner tank.

[0028] The hot air hood includes a hood body 1, on which a plurality of elongated air inlet holes 11 are provided, and the plurality of elongated air inlet holes 11 are arranged radially. In other words, the plurality of elongated air inlet holes 11 are spaced apart and distributed around in a circular or elliptical shape. The outer peripheral edge of the hood body 1 is provided with a plurality of air outlet areas 12, specifically located at the top, bottom or side of the outer peripheral edge of the hood body 1 without restriction. The utility model adopts elongated air inlet holes and arranges them radially. When the fan in the air duct rotates, the air in the inner pot enters the air duct from the elongated air inlet holes. During the process of the fan rotating and sucking air, the air entering from the air inlet holes can be concentrated at a position close to the fan, which is more conducive to the fan sucking air. At the same time, in conjunction with the rotation direction of the fan, it can be superimposed with the wind speed of the fan, which can greatly increase the air flow speed and increase the convection speed of the hot air between the inner pot of the oven and the air duct, thereby improving the hot air convection effect during cooking.

[0029] More specifically, the elongated air inlet holes 11 are arranged at equal intervals and in a turbine shape. When the oven is working, since the fan generally rotates in a turbine shape, arranging the elongated air inlet holes 11 in a turbine shape can, on the one hand, be more consistent with the air suction direction of the fan during rotation. On the other hand, as the heat radiation of the heating element in the air duct occurs, a heat-gathering visual effect can be presented.

[0030] In this embodiment, the cover 1 is rectangular, and the top and side peripheral edges of the cover 1 are provided with the air outlet area 12. Of course, the cover 1 can also be provided in other shapes, and the specific shape varies according to the structure of the oven inner container, but all of them fall within the scope of protection of the present invention.

[0031] Further, such as Figure 2 and Figure 3 As shown, a recessed portion 15 is provided on the top edge of the cover body 1, and one of the air outlet areas 12 is located outside the recessed portion 15 to facilitate the discharge of hot air from the top.

[0032] Furthermore, the strip-shaped air inlet holes 11 are generally arc-shaped or curved, and the curvature direction is the same as the fan's rotation direction. The arc-shaped or curved air inlet holes 11 define the wind flow path and have a certain diversion effect, which is more conducive to wind gathering. When the wind enters the air duct, it can exert a certain thrust on the fan, further increasing the fan speed and accelerating the hot air convection.

[0033] When the hot air hood is used to form a dual hot air duct, two groups of air inlet areas formed by a plurality of strip air inlet holes 11 are usually arranged on the hood body. Each air inlet area corresponds to a fan, and the fan is set to a forward and reverse rotation combination as needed. Correspondingly, the strip air inlet holes 11 are set to a bending direction according to the forward or reverse rotation of the corresponding fan.

[0034] Further, such as Figure 2 and Figure 4 As shown, the elongated air inlet hole 11 is provided with a first end 111 and a second end 112, and the second end 112 is close to the middle of the cover body 1. The size of the elongated air inlet hole 11 gradually decreases from the first end 111 toward the second end 112, that is, when the fan rotates, a large amount of wind flows from the first end 111 to the second end 112. Since the size of the second end 112 is smaller than the first end 111, the wind is squeezed during the flow, and has a greater wind speed when concentrated at the second end 112, which can greatly increase the speed of the fan, thereby further increasing the hot air convection speed.

[0035] Furthermore, an arc-shaped portion 113 is provided between the first end 111 and the second end 112 of the strip-shaped air inlet hole 11, and a bending portion 1111 is provided at the first end 111. Wind flows into the strip-shaped air inlet hole 11 from the bending portion 111, which limits the path of the entire wind and avoids dispersion of the incoming air volume.

[0036] Further, such as Figure 1 and Figure 3 As shown, the cover body 1 is provided with an outwardly protruding boss 13, on which the elongated air inlet 11 is formed. The cover body 1 is also provided with a number of positioning holes 14. Specifically, in this embodiment, the cover body 1 is provided with four positioning holes 14, distributed at the four corners of the cover body 1. The hot air cover of this embodiment is fixed between the positioning holes 14 and the back plate to form a heating chamber. The boss 13 facilitates the installation of accessories such as the fan and heater.

[0037] Example 2

[0038] like Figure 5 and Figure 6 As shown, the air duct of the oven of the embodiment of the present invention includes the hot air hood, back plate 2, heating element 3 and fan 4 in embodiment 1. A heating chamber is formed between the back plate 2 and the hot air hood. The back plate 2 and the air outlet area 12 at the outer peripheral edge of the hot air hood are covered to form an air outlet 16. That is, after the back plate 2 and the hot air hood are assembled and fixed, the outer peripheral edge is not completely sealed. The heating element 3 is installed in the heating chamber to heat the air entering the heating chamber; the fan 4 is installed in the heating chamber, and the long strip air inlet 11 is facing the fan 4. When the fan 4 rotates, the cold air in the oven liner is sucked into the heating chamber from the long strip air inlet 11. After the cold air is heated by the heating element 3, it enters the liner from the air outlet 16, realizing the circulation of hot air.

[0039] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A hot air hood of an oven, mounted on the rear inner side of an oven liner, for hot air convection, characterized in that: The utility model comprises a cover body, wherein a plurality of long strip air inlet holes are opened on the cover body, and the plurality of long strip air inlet holes are arranged radially; and a plurality of air outlet areas are arranged on the outer peripheral edge of the cover.

2. The hot air hood of the oven according to claim 1, characterized in that The strip-shaped air inlet hole is generally arc-shaped or curved, and the bending direction is the same as the rotation direction of the fan.

3. The hot air hood of the oven according to claim 1, characterized in that: The elongated air inlet hole is provided with a first end and a second end, the second end is close to the middle of the cover body, and the size of the elongated air inlet hole gradually decreases from the first end toward the second end.

4. The hot air hood of the oven according to claim 3, characterized in that: An arc-shaped transition portion is provided between the first end and the second end of the strip-shaped air inlet hole.

5. The hot air hood of the oven according to claim 4, characterized in that: The first end is provided with a bending portion.

6. The hot air hood of the oven according to claim 1, characterized in that: The plurality of long strip air inlet holes are arranged at equal intervals and are in a turbine shape.

7. The hot air hood of the oven according to claim 1, characterized in that: A recessed portion is provided on the top edge of the cover body, and one of the air outlet areas is located outside the recessed portion.

8. The hot air hood of the oven according to claim 1, characterized in that: The cover body is provided with a boss protruding outward, and the long strip air inlet hole is opened on the boss.

9. The hot air hood of the oven according to claim 1, characterized in that: The cover body is provided with a plurality of positioning holes.

10. An air duct of an oven, characterized in that: include: The hot air hood according to any one of claims 1 to 9; a back plate, wherein a heating chamber is formed between the back plate and the hot air hood; The back plate and the air outlet area of the outer peripheral edge of the hot air cover are covered to form an air outlet; a heating element, the heating element being installed in the heating chamber; A fan is installed in the heating chamber, and the elongated air inlet hole faces the fan.

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