CN213178448U - Circulating hot air structure and cooking appliance using same - Google Patents

Abstract

The utility model relates to a circulating hot air structure, it is used for carrying circulating hot air to the culinary art room, the culinary art room is the cavity structures who comprises preceding frame, U template, roof, back plate, circulating hot air structure includes: the hot air assembly comprises a mounting plate, a heating pipe assembly, a hot air fan blade and a hot air motor; the hot air chamber is formed by enclosing a mounting plate and a top plate together, the top plate is concave towards the center of the cooking chamber, and two or more circulating ventilation areas are distributed on the top plate. The cooking appliance conveys the circulating hot air to the cooking chamber through the circulating hot air structure. The utility model discloses a circulation ventilation region circulates the air current in to cavity structures, utilizes the heat convection to heat the culinary art to food, reaches the effect of quick culinary art.

Description

Circulating hot air structure and cooking appliance using same

Technical Field

The utility model belongs to the technical field of cooking device, especially, relate to a circulating hot air structure and use its cooking device.

Background

The general microwave oven product has limited cooking range and cannot meet the cooking diversity. In order to improve the cooking effect of the microwave oven product, a heating component or a heating tube is added to be used as a heating source for cooking food. But the heat radiation adopted by the heating tube at the top conducts heat, so that the efficiency is low and the speed is slow. Resulting in long cooking time and high energy consumption.

Therefore, based on the problems, the circulating hot air structure and the cooking appliance using the same have important practical significance, wherein the circulating hot air structure circulates air flow in the cavity structure through the circulating ventilation area, and heats and cooks food by utilizing heat convection.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that exists among the above-mentioned prior art, provide one kind and circulate through the air current of circulation ventilation region in to cavity structures, utilize the heat convection current to heat the culinary art to food, reach the circulation hot air structure of quick culinary art effect and use its cooking appliance.

The utility model discloses a solve the technical scheme who takes of this problem and be:

the utility model provides a circulation hot-blast structure, its is used for carrying circulation hot-blast to the cooking chamber, the cooking chamber is the cavity structures who comprises preceding frame, U template, roof, back plate, the U template is the trilateral frame type structure that comprises left side board, right side board, lower side board, circulation hot-blast structure includes:

the hot air assembly comprises a mounting plate, a heating pipe assembly, a hot air fan blade and a hot air motor;

the hot air chamber is formed by enclosing a mounting plate and a top plate together, the top plate is concave towards the center of the cooking chamber, and two or more circulating ventilation areas are distributed on the top plate.

Preferably, the heating tube assembly and the hot air fan blade are located in the hot air chamber, the heating tube assembly and the hot air fan blade are assembled on the mounting plate respectively, the hot air fan blade is located in the middle of the mounting plate and can rotate along with a motor shaft of the hot air motor, the heating tube assembly surrounds the periphery of the hot air fan blade, and the heating tube assembly is spirally coiled.

Preferably, the hot air fan blade comprises a mounting plane and fins circumferentially distributed on the mounting plane at intervals, one side of each fin is bent to form a fin folding surface, the length of each fin folding surface is smaller than that of each fin, and an air storage space is formed between each fin folding surface and the mounting plane in a rotating state of the hot air fan blade structure.

Further preferably, a motor fixing plate is further installed at the upper end of the installing plate, the hot air motor is fixed on the motor fixing plate, and a motor shaft of the hot air motor extends into the hot air chamber to be connected with the hot air fan blade.

Further preferably, the top plate comprises a top plate body and a concave top plate surface which is concave downwards from the middle of the top plate body to the center of the cooking chamber, and the concave top plate surface comprises a concave top surface and a concave side surface which extends along the circumferential direction of the edge of the concave top surface and is connected with the top plate body into a whole.

Further preferably, the included angle between each of the concave side surfaces and the concave top surface is no less than ninety degrees.

Further preferably, the circulating ventilation area comprises:

a central ventilation zone distributed over a central region of the concave top surface;

a non-central ventilation zone surrounding the central ventilation zone and spaced apart in a non-central region of the concave top surface.

Further preferably, the circulating ventilation area further comprises lateral ventilation zones distributed on one or more sides of the concave side.

Further preferably, the central ventilation area is located right below the hot fan blade, the area where the central ventilation area is located is circular, the diameter of the area where the central ventilation area is located is equal to the diameter of the hot fan blade, and the number of the non-central ventilation areas is one or more and is uniformly distributed outside the central ventilation area.

Further preferably, the central ventilation area, the non-central ventilation area and the side ventilation area are respectively in a mesh structure, the diameter of meshes of the central ventilation area is smaller than lambda/4, and the diameter of the meshes in the central ventilation area is gradually reduced from the middle to the periphery.

Further preferably, the height of the central ventilation zone is slightly lower than that of the non-central ventilation zone, the central ventilation zone is of a plane/arc curved surface structure, and the side ventilation zones are of a plane/arc curved surface structure.

The second invention of the utility model aims to: the utility model provides a cooking appliance, it includes the dustcoat, be located the electric appliance room in the dustcoat, the cooking chamber, with cooking chamber complex furnace gate subassembly and be used for controlling electric appliance room interior electric part and hot air component's control box subassembly, cooking appliance passes through circulating hot air structure to the cooking chamber hot air that circulates.

The utility model has the advantages and positive effects that:

1. the utility model discloses in, it has two and above circulation ventilation region to distribute on the roof, and the convection current that utilizes hot-blast subassembly to produce is hot-blast, circulates through the air current of circulation ventilation region in to cavity structures, utilizes the heat convection to heat the culinary art to food, reaches the effect of quick culinary art.

2. The utility model discloses in, be formed with the air storage space between fin folded surface and the mounting surface, do benefit to the interior wind of hot-blast fan leaf and gather at the middle part, make the air current have sufficient wind-force and be thrown away the periphery of hot-blast fan leaf completely.

3. The utility model discloses in, the circulation ventilation is regional including central ventilation district, non-central ventilation district and/or side position ventilation district, and the multidimension air-out is favorable to hot-blast and the abundant contact of eating the material and carries out abundant heat exchange, helps promoting cooking efficiency, culinary art effect.

4. The utility model discloses in, the diameter of mesh reduces to all around from the middle part gradually in the central ventilation district, and hot-blast fan leaf center forms the negative pressure and concentrates the air in the culinary art room through the middle part in central ventilation district and inhale, inhale through assisting all around, neither influences the backward flow effect to the convection current wind, does not hinder the air-out effect in non-central ventilation district again.

5. The utility model discloses in, central ventilation zone is plane circular arc curved surface structure, and side position ventilation zone is plane circular arc curved surface structure, helps the concentrated suction of circulated air, multidimensional discharge, is favorable to hot-blast and the abundant contact of eating the material and carries out abundant heat exchange, helps promoting culinary art efficiency, culinary art effect.

Drawings

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

FIG. 1 is a schematic view of a cooking chamber;

FIG. 2 is an exploded view of the hot air assembly;

FIG. 3 is a schematic structural view of a hot fan blade;

FIG. 4 is a schematic structural view of the top plate;

FIG. 5 is a schematic top view of the top plate;

FIG. 6 is a schematic cross-sectional view taken along the line A-A in FIG. 5;

FIG. 7 is a schematic structural view of embodiment 3,

in the figure: 1. the heat-insulation electric appliance cabinet comprises a front frame, a U-shaped plate, a top plate body, a concave top surface, a concave side surface, a mounting plate, a heating tube component, a hot fan blade, a mounting plane, a fin folding surface, a hot air motor, a motor fixing plate, a central ventilation area, a non-central ventilation area, a lateral ventilation area, a side ventilation area, a housing, an electric appliance chamber, a door component, a control box component, a heat-insulation electric appliance cabinet and a control box component, wherein the front frame, the U-.

Detailed Description

First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations. The present invention will be described in detail with reference to fig. 1 to 7.

Example 1:

the utility model provides a circulation hot-blast structure, it is used for carrying circulation hot-blast to the cooking chamber, the cooking chamber is the cavity structures who comprises preceding frame 1, U template 2, roof 3, back plate, U template 2 is the trilateral frame type structure that comprises left side board, right side board, lower side board, circulation hot-blast structure includes: the hot air assembly comprises a mounting plate 4, a heating pipe assembly 5, a hot air fan blade 6 and a hot air motor 7; the hot air chamber is formed by enclosing a mounting plate 4 and a top plate 3 together, the top plate 3 is concave towards the center of the cooking chamber, and two or more circulating ventilation areas are distributed on the top plate 3.

The working principle is as follows: in this technical scheme, cavity structure's top is arranged in to hot-blast subassembly, roof 3 orientation the indent is located to the center department of culinary art room, heating tube subassembly 5 among the hot-blast subassembly, hot-blast fan leaf 6 is located the hot-blast cavity that mounting panel 4 and roof 3 enclose jointly, it has two and above circulation ventilation region to distribute on the roof 3, utilize hot-blast motor 7 among the hot-blast subassembly, hot-blast fan leaf 6 work, the convection current wind of production, circulate through the air current of circulation ventilation region in to cavity structure, circulation wind brings the heat of heating tube subassembly 5 work in the cavity structure into edible material in the cavity structure, directly blow the edible material of placing in the cavity structure, utilize the thermal convection to heat the culinary art to food, reach the effect of fast speed cooking.

Further, still consider in this embodiment, heating tube subassembly 5, hot-blast fan leaf 6 are located the hot-blast cavity, heating tube subassembly 5, hot-blast fan leaf 6 assemble respectively on mounting panel 4, hot-blast fan leaf 6 is located the middle part of mounting panel 4, can rotate along with the motor shaft of hot-blast motor 7, heating tube subassembly 5 encircles in the periphery of hot-blast fan leaf 6, and when hot-blast fan leaf 6 took place to rotate, hot-blast fan leaf 6 center formed the negative pressure to blow to the periphery of hot-blast fan leaf 6, by the heating tube 5 heating back in the hot-blast fan leaf 6 outside, then blown out by hot-blast fan leaf 6, preferred, heating tube subassembly 5 is the heliciform and spirals, and the heating tube that the heliciform spirals can further improve the heating effect of convection current wind.

Furthermore, it can be considered in this embodiment that the hot air fan blade 6 includes a mounting plane 601, and fins 602 circumferentially distributed on the mounting plane 601 at intervals, preferably, the number of the fins is 6-12, and the fins are circumferentially distributed at equal intervals and integrally formed on the mounting plane in the circumferential direction to more effectively drive the airflow to flow, one side of the fin 602 is bent to form a fin folded surface 603, the fin folded surface helps to drive the airflow to flow, so as to push the airflow and generate the air volume, the length of the fin folded surface 603 is smaller than that of the fin 602, as shown in fig. 3, in the rotating state of the hot air fan blade 6, an air storage space is formed between the fin folded surface 603 and the mounting plane 601, a vacuum is formed in the center of the hot air fan blade 6, the fin folded surface drives the air to flow through the air storage space to suck the air into the middle of the hot air fan blade 6, and the air storage space is favorable for the air in the hot, the air flow has enough wind power and is completely thrown out to the periphery of the hot air fan blade.

Furthermore, it can be considered in this embodiment that a motor fixing plate 8 is further installed at the upper end of the mounting plate 4, the hot air motor 7 is fixed on the motor fixing plate 8, and a motor shaft of the hot air motor 7 extends into the hot air chamber to be connected with the hot air fan blade 6.

Still further, it is also contemplated in the present embodiment that, as shown in fig. 1 and 4-6, the top plate 3 includes a top plate body 301, a top plate concave surface depressed from a middle portion of the top plate body 301 toward a center of the cooking chamber, and the top plate concave surface includes a concave top surface 302, and a concave side surface 303 extending along a circumferential direction of an edge of the concave top surface 302 and integrally connected to the top plate body 301.

Furthermore, it can be considered in this embodiment that the included angle between each side of the concave side 303 and the concave top surface 302 is not less than ninety degrees, and the hot air blown out from the concave side 303 can be blown toward the peripheral position of the food material portion placed in the cooking chamber.

Still further, it is also contemplated in this embodiment that the circulating ventilation area includes:

the central ventilation area 9 is distributed in the middle area of the concave top surface 302, the hot air motor 7 drives the hot air fan blade 6 to work, and negative pressure is formed in the center of the hot air fan blade 6 so that air in the cooking chamber can be sucked into the hot air chamber through the central ventilation area 9;

the non-central ventilation zone 10 surrounds the central ventilation zone 9 and is distributed in the non-central area of the concave top surface 302 at intervals, air flow generated by the hot air fan blade 6 is heated by the heating pipe assembly 5 on the outer side and then blown out, the air flow is blown into the cooking chamber from the non-central ventilation zone 10, the central ventilation zone 9 is distributed in the central area of the concave top surface 302, the non-central ventilation zone 10 is arranged around the central ventilation zone 9, hot air blown out by the non-central ventilation zone 10 can be blown towards the food placing part of the cooking chamber, heat exchange between the hot air and the food is effectively promoted, the cooking time of food is shortened, the cooking efficiency is improved, and the cooking effect is improved.

Example 2:

embodiment 2 of the present invention is further improved on the basis of embodiment 1 so as to fully exert the technical advantages of the present invention, and this is exemplified below.

For example: the circulating ventilation area further comprises side ventilation areas 11 which are distributed on one or more sides of the concave side 303, as shown in fig. 1, except that the non-central ventilation area 10 can blow hot air to the cooking chamber, the side ventilation areas 11 can blow hot air to the cooking chamber, air is fed into the central ventilation area 9, air is discharged from the non-central ventilation area 10 and the side ventilation areas 11, circulating ventilation heating is achieved, and cooking efficiency is improved. Being different from non-central ventilation zone 10 and blowing down, side ventilation zone 11 can blow towards the peripheral position that the cooking chamber placed the edible material part, and the multidimension air-out is favorable to hot-blast and the abundant contact of eating the material and carries out abundant heat exchange, helps promoting culinary art efficiency, culinary art effect.

It should be noted that, the non-central ventilation area 10 and the side ventilation area 11 may be set simultaneously or separately, and may be flexibly configured according to the heating requirement.

Further, it is considered that in the embodiment 1/2, the central ventilation area 9 is located right below the hot fan blade 6, the area where the central ventilation area 9 is located is circular, and the diameter of the area where the central ventilation area 9 is located is equal to the diameter of the hot fan blade 6, negative pressure is formed at the center of the hot fan blade 6 to suck air in the cooking chamber into the hot air chamber through the central ventilation area 9, the number of the non-central ventilation areas 10 is one or more, the non-central ventilation areas are uniformly distributed outside the central ventilation area 9, and the plurality of non-central ventilation areas 10 can push hot air into the cooking chamber synchronously.

Further, still can consider in embodiment 1/2, central ventilation district 9, non-central ventilation district 10, side ventilation district 11 mesh column structure respectively, its mesh diameter is less than lambda 4, and is preferred, and the mode of arranging of mesh is matrix/annular array, as shown in fig. 4, the diameter of mesh reduces gradually from the middle part to all around in central ventilation district 9, and hot-blast fan 6 center forms the negative pressure and inhales the central part of the central ventilation district 9 of concentrating the air in the culinary art room through central ventilation district 9, and the supplementary inhaling all around of central ventilation district 9 neither influences the backward flow effect to the wind, does not hinder the air-out effect in non-central ventilation district 10 again, and central ventilation district 9, non-central ventilation district 10 each play its own role, mutual noninterference.

Further, it can be considered in embodiment 1/2 that the central ventilation area 9 is located at a height slightly lower than the non-central ventilation area 10, the central ventilation area 9 and the non-central ventilation area 10 are independent of each other and do not interfere with each other, the central ventilation area 9 is in a plane/arc curved surface structure, when the central ventilation area 9 is in the arc curved surface structure, for example, the concave arc curved surface helps the center of the hot fan blade 6 to form negative pressure to suck air in the cooking chamber centrally through the middle of the central ventilation area 9, the side ventilation area 11 is in the plane/arc curved surface structure, when the side ventilation area 11 is in the arc curved surface structure, for example, the convex arc curved surface helps the hot air generated by the hot fan blade 6 to blow air to the four places in the cooking chamber, which is beneficial to the sufficient contact between the hot air and the food material and to perform sufficient heat exchange, the cooking efficiency and the cooking effect are improved.

Example 3:

as shown in fig. 7, an electric cooking appliance, for example, a microwave oven/toaster, includes an outer casing 12, an electric appliance chamber 13 disposed in the outer casing 12, a cooking chamber, a door assembly 14 engaged with the cooking chamber, and a control box assembly 15 for controlling electric appliances and a hot air assembly in the electric appliance chamber 13, wherein the electric cooking appliance delivers circulating hot air to the cooking chamber through the circulating hot air structure. Utilize hot-blast motor 7, the work of hot-blast fan leaf 6 among the hot-blast subassembly, the convection current wind of production circulates through the air current of circulation ventilation zone pair cavity structures in, and the heat of circulation wind 5 work of heating tube subassembly in the cavity structures brings into the cavity structures in eats the material, directly blows to the material of eating of placing in the cavity structures, utilizes the thermal convection to heat the culinary art to food, reaches the effect of quick culinary art.

To sum up, the utility model provides a through the air current of circulation ventilation region in to cavity structures circulation, utilize the heat convection current to heat the culinary art to food, reach the circulation hot air structure of quick culinary art effect and use its cooking appliance.

The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (10)

1. The utility model provides a circulation hot-blast structure, its is used for carrying circulation hot-blast to the cooking chamber, the cooking chamber is the cavity structures who comprises preceding frame (1), U template (2), roof (3), back plate, U template (2) are the trilateral frame type structure that comprises left side board, right side board, lower side board, its characterized in that: the circulating hot air structure comprises:

the hot air assembly comprises a mounting plate (4), a heating pipe assembly (5), a hot air fan blade (6) and a hot air motor (7);

the hot air chamber is formed by the joint enclosure of an installation plate (4) and a top plate (3), the top plate (3) is concave towards the center of the cooking chamber, and two or more circulating ventilation areas are distributed on the top plate (3).

2. A structure of circulating hot wind according to claim 1, wherein: the heating pipe assembly (5) and the hot air fan blade (6) are located in the hot air chamber, and the heating pipe assembly (5) and the hot air fan blade (6) are assembled on the mounting plate (4) respectively.

3. A structure of circulating hot wind according to claim 2, wherein: the hot fan blade (6) comprises a mounting plane (601) and fins (602) which are circumferentially distributed on the mounting plane (601) at intervals, one side of each fin (602) is bent to form a fin folding surface (603), and the length of each fin folding surface (603) is smaller than that of each fin (602).

4. A structure of circulating hot wind according to claim 2, wherein: the top plate (3) comprises a top plate body (301), and a concave top plate surface which is concave from the middle of the top plate body (301) to the center of the cooking chamber, wherein the concave top plate surface comprises a concave top surface (302) and a concave side surface (303) which extends along the circumferential direction of the edge of the concave top surface (302) and is connected with the top plate body (301) into a whole.

5. A structure of circulating hot wind according to claim 4, wherein: the circulating ventilation area includes:

a central ventilation zone (9) distributed over a central region of said concave top surface (302);

non-central ventilation zones (10) surrounding the central ventilation zone (9) and spaced apart in non-central regions of the concave top surface (302).

6. A structure of circulating hot wind according to claim 5, wherein: the circulating ventilation zone further comprises lateral ventilation zones (11) distributed on one or more of the concave sides (303).

7. A structure of circulating hot wind according to claim 6, wherein: the area where the central ventilation area (9) is located is circular, and the diameter of the area where the central ventilation area (9) is located is equal to that of the hot fan blade (6).

8. A structure of circulating hot wind according to claim 6, wherein: the central ventilation area (9), the non-central ventilation area (10) and the side ventilation area (11) are respectively of mesh structures, and the diameter of meshes in the central ventilation area (9) is gradually reduced from the middle to the periphery.

9. A structure of circulating hot wind according to claim 6, wherein: the height of the central ventilation area (9) is slightly lower than that of the non-central ventilation area (10), the central ventilation area (9) is of a plane/arc curved surface structure, and the side ventilation area (11) is of a plane/arc curved surface structure.

10. An electric cooking appliance, which comprises an outer cover (12), an appliance chamber (13) positioned in the outer cover (12), a cooking chamber, a furnace door assembly (14) matched with the cooking chamber, and a control box assembly (15) for controlling the electric appliance and a hot air assembly in the appliance chamber (13), and is characterized in that: the cooking appliance delivers the circulating hot wind to the cooking chamber through the circulating hot wind structure according to any one of claims 1 to 9.

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