Far infrared oven

Abstract

The far infrared oven comprises an inner container, an air heater and an electric heating pipe, the electric heating pipe comprises an electric heating element, a graphene coating and a hollow pipe body, the pipe body is arranged on the side wall of the inner container, the electric heating element is arranged in the pipe body, and the graphene coating is arranged on the outer surface of the pipe body in a coating mode; the hot-air blower and the electric heating pipe are arranged on the same side wall of the inner container, the hot-air blower comprises fan blades and a driving motor driving the fan blades to rotate, and the electric heating pipe is located in front of air outlets of the fan blades or annularly arranged on the peripheries of the fan blades. In the multi-layer cooking process of the far-infrared oven, infrared rays emitted by the electric heating pipes can irradiate food materials on all layers, the multi-layer cooking efficiency of the far-infrared oven can be improved, hot air near the electric heating pipes can be directly blown to the food materials on all the layers by the hot-air blower immediately, and therefore the multi-layer cooking efficiency of the far-infrared oven is improved. The multi-layer cooking efficiency of the far infrared oven can also be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a far-infrared oven. Background Art

[0002] In existing far-infrared ovens, electric heating tubes are usually installed on the top wall of the inner pot. When the far-infrared oven performs multi-layer cooking, the infrared rays emitted by the electric heating tubes can almost only irradiate the top layer, and it is difficult to irradiate other layers below the top layer, resulting in that the food on other layers below the top layer is difficult to be heated, causing uneven temperature distribution in the far-infrared oven, making the efficiency of multi-layer cooking in the far-infrared oven very low and affecting the cooking effect. Utility Model Content

[0003] Based on this, it is necessary to provide a far infrared oven to address the above problems, which can improve the efficiency of multi-layer cooking in the far infrared oven.

[0004] In order to solve the above problems, the utility model provides the following technical solutions:

[0005] A far-infrared oven comprises an inner pot, a hot air blower and an electric heating tube, wherein the electric heating tube comprises an electric heating element, a graphene coating and a hollow tube body, wherein the tube body is arranged on the side wall of the inner pot, the electric heating element is arranged in the tube body, and the graphene coating is coated on the outer surface of the tube body; the hot air blower and the electric heating tube are arranged on the same side wall of the inner pot, the hot air blower comprises a fan blade and a driving motor for driving the fan blade to rotate, and the electric heating tube is located in front of the fan blade air outlet or is arranged around the periphery of the fan blade.

[0006] The far infrared oven has at least the following beneficial effects:

[0007] During the operation of the electric heating tube, the graphene coating is heated and emits high-energy infrared rays, and the electric heating tube is arranged on the side wall of the inner pot through the tube body, so that during the multi-layer cooking process of the far-infrared oven, the infrared rays emitted by the electric heating tube can irradiate the food on each layer, which can improve the efficiency of the multi-layer cooking of the far-infrared oven. Moreover, the hot air blower and the electric heating tube are arranged on the same side wall of the inner pot, and the electric heating tube is located in front of the fan blade air outlet or is arranged around the periphery of the fan blade, so that during the multi-layer cooking process of the far-infrared oven, the hot air near the electric heating tube can be immediately blown directly to the food on each layer by the hot air blower to heat these food, which can also improve the efficiency of the multi-layer cooking of the far-infrared oven.

[0008] In one embodiment, the tube body is made of a metal alloy.

[0009] With such arrangement, the tube body has better ductility and can be made into a more complex shape.

[0010] In one of the embodiments, the electric heating tube is spirally wound into a multi-turn structure along the air outlet direction of the fan blade, and there is a gap between two adjacent turns.

[0011] Such an arrangement can increase the heating area of ​​the electric heating tube and improve the cooking efficiency of the far-infrared oven.

[0012] In one embodiment, the far-infrared oven further comprises a fixing frame, the fixing frame is fixedly connected to the side wall of the inner pot, the fixing frame is provided with a plurality of slots, and each circle of the electric heating tube is respectively fixed in a different slot.

[0013] With such arrangement, each circle of the electric heating tube is supported and fixed by the fixing frame, which can increase the stability of the electric heating tube.

[0014] In one embodiment, a plurality of the fixing frames are provided, and the plurality of the fixing frames are evenly distributed around the circumference.

[0015] With such arrangement, a plurality of fixing frames evenly support and fix each circle of the electric heating tube, thereby increasing the stability of the electric heating tube.

[0016] In one of the embodiments, each side wall of the inner container is made of metal or metal alloy, and the wall surface of each side wall of the inner container forms a diffuse reflection surface.

[0017] With this arrangement, the infrared rays emitted by the heating tube will be diffusely reflected by the side walls of the inner pot after reaching them, which allows the infrared rays emitted by the electric heating tube to irradiate different parts of each layer of food, allowing the food to be heated more evenly, which can both speed up the cooking process and improve the cooking effect.

[0018] In one embodiment, the wall surface of each side wall of the inner container is in an undulating shape.

[0019] With such an arrangement, the side wall of the inner container can be conveniently manufactured into a diffuse reflection surface.

[0020] In one embodiment, the far-infrared oven includes a hot air blower baffle fixedly mounted on the side wall, the electric heating tube and the fan blades are arranged between the side wall and the hot air blower baffle, and the hot air blower baffle is provided with an air outlet; the central area of ​​the hot air blower baffle is a glass plate, and the glass plate is arranged opposite to the electric heating tube.

[0021] With this arrangement, the infrared rays emitted by the electric heating tube can pass through the glass plate and the hot air blower baffle to reach the cooking area in the inner pot. The hot air near the electric heating tube can enter the cooking area in the inner pot through the air outlet under the blowing of the hot air blower. Moreover, the glass plate plays a certain role in blocking, which is conducive to preventing the oil generated in the cooking area of ​​the inner pot from contaminating the electric heating tube.

[0022] In one embodiment, the far-infrared oven includes a door body and a box body, the inner pot is fixedly arranged inside the box body, the door body is rotatably connected to the box body to open and close the opening of the inner pot, and the hot air blower and the electric heating tube are both arranged on the side of the inner pot opposite to the door body.

[0023] Such an arrangement can reduce the left-right dimensions of the far-infrared oven, making it easier to place the far-infrared oven in a narrow space for use.

[0024] In one embodiment, the electric heating tube is provided in plurality, and the plurality of electric heating tubes are respectively arranged on different side walls of the inner container.

[0025] With such arrangement, during the multi-layer cooking process in the far-infrared oven, the infrared rays emitted by the electric heating tubes located on different side walls can irradiate the food on each layer, thereby improving the efficiency of the multi-layer cooking in the far-infrared oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of a part of the structure of a far infrared oven according to an embodiment of the utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of the connection relationship between the hot air blower and the side wall of the inner tank in the structure shown;

[0028] Figure 3 for Figure 1 A schematic diagram of the positional relationship between the hot air blower, the electric heating pipe and the fixing frame in the structure shown;

[0029] Figure 4 for Figure 3 A schematic diagram of the structure of the fixing frame in the structure shown;

[0030] Figure 5 for Figure 1 The schematic diagram of the structure after the hot air blower baffle is installed;

[0031] Figure 6 for Figure 5 Schematic diagram of the connection relationship between the hot air blower, the hot air blower baffle and the side wall of the inner tank in the structure shown.

[0032] Reference numerals:

[0033] 1. Inner tank; 11. Side wall; 12. Opening; 2. Hot air blower; 21. Fan blades; 22. Driving motor; 3. Hot air blower baffle; 31. Glass plate; 32. Air outlet; 4. Electric heating tube; 5. Fixed bracket; 51. Card slot. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] See also Figure 1 The utility model provides a far-infrared oven, which includes an inner pot 1 and an electric heating tube 4. The electric heating tube 4 includes an electric heating element, a graphene coating and a hollow tube body, the tube body is arranged on the side wall 11 of the inner pot 1, the electric heating element is arranged in the tube body, and the graphene coating is coated on the outer surface of the tube body. In this way, the electric heating tube 4 is arranged on the side wall 11 of the inner pot 1 through the tube body. During the multi-layer cooking process of the far-infrared oven, the infrared rays emitted by the electric heating tube 4 can irradiate the food on each layer, which can improve the efficiency of multi-layer cooking of the far-infrared oven.

[0041] See also Figures 1 to 3 The far infrared oven further comprises a hot air blower 2, which is arranged on the same side wall 11 of the inner pot 1 as the electric heating tube 4. The hot air blower 2 comprises a fan blade 21 and a drive motor 22, which is used to drive the fan blade 21 to rotate, thereby driving the hot air flow in the far infrared oven to speed up the cooking speed. The electric heating tube 4 is located in front of the air outlet of the fan blade 21 or is arranged around the periphery of the fan blade 21 (such as Figure 3 As shown), in this way, during the multi-layer cooking process in the far-infrared oven, the hot air near the electric heating tube 4 can be immediately blown directly to the food on each layer by the hot air blower 2 to heat the food, which can also improve the efficiency of the multi-layer cooking in the far-infrared oven.

[0042] Exemplarily, the electric heating element may be a resistance wire, a resistance sheet, or an electric heating tube.

[0043] Preferably, the tube body of the electric heating tube 4 is made of a metal alloy. In this way, the tube body of the electric heating tube 4 has good ductility and can be made into a more complex shape.

[0044] Preferably, the tube body of the electric heating tube 4 is made of 840 stainless steel or 304 stainless steel. 840 stainless steel and 304 stainless steel are resistant to high temperature, corrosion, oxidation and high mechanical strength, and are suitable for making tube bodies that need to withstand high temperatures. Moreover, 840 stainless steel and 304 stainless steel are food-grade stainless steels, which are beneficial to ensuring the food safety of users. Of course, in other embodiments, the tube body of the electric heating tube 4 can also be made of other metal alloys, such as nickel-chromium alloy.

[0045] As mentioned above, in some embodiments, the tube body of the electric heating tube 4 is made of a metal alloy, so the tube body of the electric heating tube 4 can be made into a more complex shape. Figure 3 In some embodiments, the electric heating tube 4 is spirally wound into a multi-turn structure along the air outlet direction of the fan blade 21, and there is a gap between two adjacent turns. This can increase the heating area of ​​the electric heating tube 4 and improve the cooking efficiency of the far infrared oven.

[0046] Further, see Figure 1 , Figure 3 and Figure 4 The far infrared oven further comprises a fixing frame 5, which is fixedly connected to the side wall 11 of the inner pot 1, and is provided with a plurality of slots 51, and each circle of the electric heating tube 4 is respectively fixed in a different slot 51. In this way, each circle of the electric heating tube 4 is supported and fixed by the fixing frame 5, which can increase the stability of the electric heating tube 4.

[0047] Exemplarily, the fixing frame 5 is screwed or welded to the side wall 11 of the inner container 1 .

[0048] Preferably, see Figure 4 The shapes and sizes of the slots 51 on the fixing frame 5 are the same, see Figure 3 The spacing between adjacent slots 51 is equal to the spacing between two adjacent circles of the electric heating tube 4 .

[0049] Preferably, see Figure 1 and Figure 3 The fixing frames 5 are provided with a plurality of fixing frames 5, and the plurality of fixing frames 5 are evenly distributed around the circumference. In this way, the plurality of fixing frames 5 evenly support and fix each circle of the electric heating tube 4, and the stability of the electric heating tube 4 can be increased.

[0050] Preferably, each side wall 11 of the inner pot 1 is made of metal or metal alloy, and the wall surface of each side wall 11 of the inner pot 1 forms a diffuse reflection surface. In this way, after the infrared rays emitted by the electric heating tube 4 reach the side walls 11 of the inner pot 1, they will be diffusely reflected by each side wall 11, so that the infrared rays emitted by the electric heating tube 4 can irradiate different parts of each layer of food, so that the food is heated more evenly, which can not only speed up the cooking speed, but also improve the cooking effect.

[0051] Preferably, the wall surfaces of the side walls 11 of the inner container 1 are all in an undulating shape to form a diffuse reflection surface. The undulating shape is easy to manufacture, for example, the wall surfaces of the side walls 11 can be formed into diffuse reflection surfaces by using a convex-concave molding method, so that the side walls 11 of the inner container 1 can be easily manufactured into diffuse reflection surfaces. Of course, in other embodiments, the wall surfaces of the side walls 11 of the inner container 1 can also be frosted to form diffuse reflection surfaces.

[0052] contrast Figure 5 and Figure 1 , and compare Figure 6 and Figure 2 The far infrared oven includes a hot air blower baffle 3 fixed to the side wall 11, an electric heating tube 4 and a fan blade 21 are arranged between the side wall 11 and the hot air blower baffle 3, and an air outlet 32 ​​is arranged on the hot air blower baffle 3. The central area of ​​the hot air blower baffle 3 is a glass plate 31, and the glass plate 31 is arranged opposite to the electric heating tube 4. In this way, the infrared rays emitted by the electric heating tube 4 can pass through the glass plate 31 and pass through the hot air blower baffle 3, thereby reaching the cooking area in the inner pot 1. The hot air near the electric heating tube 4 can enter the cooking area in the inner pot 1 through the air outlet 32 ​​under the blowing of the hot air blower 2. Moreover, the glass plate 31 plays a certain blocking role, which is conducive to preventing the oil stains generated in the cooking area of ​​the inner pot 1 from contaminating the electric heating tube 4.

[0053] Optionally, the portion of the hot air blower baffle 3 except the glass plate 31 may be made of glass or food-grade stainless steel.

[0054] See also Figure 1 The far infrared oven includes a door body (not shown in the figure) and a box body (not shown in the figure), the inner pot 1 is fixedly arranged inside the box body, the door body is rotatably connected to the box body to open and close the opening 12 of the inner pot 1, the hot air blower 2 and the electric heating tube 4 are both arranged on the side of the inner pot 1 opposite to the door body, and the air outlet of the fan blade 21 faces the door body. Compared with arranging the hot air blower 2 and the electric heating tube 4 on the left or right side of the inner pot 1, this can reduce the left and right dimensions of the far infrared oven, making it easier to place the far infrared oven in a narrow space for use.

[0055] Optionally, there are multiple electric heating tubes 4, and the multiple electric heating tubes 4 are respectively arranged on different side walls 11 of the inner pot 1. In this way, during the multi-layer cooking process of the far-infrared oven, the infrared rays emitted by the electric heating tubes 4 located on different side walls 11 can irradiate the food on each layer, which can improve the efficiency of multi-layer cooking in the far-infrared oven. Exemplarily, the left side wall 11, the right side wall 11 and the rear side wall 11 of the inner pot 1 are all provided with electric heating tubes 4, or the left side wall 11, the right side wall 11 and the rear side wall 11 of the inner pot 1 are respectively provided with electric heating tubes 4.

[0056] See also Figure 2 In some embodiments, the driving motor 22 of the hot air blower 2 is arranged on one side of the side wall 11 of the inner tank 1, and the fan blades 21 are arranged on the other side of the side wall 11 of the inner tank 1. The output shaft of the driving motor 22 passes through the side wall 11 of the inner tank 1, and the fan blades 21 are fixedly connected to the output shaft of the driving motor 22.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0058] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A far infrared oven, characterized in that: The invention comprises an inner container (1), a hot air blower (2) and an electric heating tube (4), wherein the electric heating tube (4) comprises an electric heating element, a graphene coating and a hollow tube body, wherein the tube body is arranged on a side wall (11) of the inner container (1), the electric heating element is arranged in the tube body, and the graphene coating is coated on the outer surface of the tube body; the hot air blower (2) and the electric heating tube (4) are arranged on the same side wall (11) of the inner container (1), the hot air blower (2) comprises a fan blade (21) and a driving motor (22) for driving the fan blade (21) to rotate, and the electric heating tube (4) is located in front of the air outlet of the fan blade (21) or is arranged around the periphery of the fan blade (21).

2. The far infrared oven according to claim 1, characterized in that: The tube body is made of metal alloy.

3. The far infrared oven according to claim 2, characterized in that: Along the air outlet direction of the fan blade (21), the electric heating tube (4) is spirally wound into a multi-turn structure, and there is a gap between two adjacent turns.

4. The far infrared oven according to claim 3, characterized in that: The far-infrared oven also includes a fixing frame (5), the fixing frame (5) being fixedly connected to the side wall (11) of the inner pot (1), the fixing frame (5) being provided with a plurality of slots (51), and each circle of the electric heating tube (4) being respectively fixed in a different slot (51).

5. The far infrared oven according to claim 4, characterized in that: A plurality of the fixing frames (5) are provided, and the plurality of the fixing frames (5) are evenly distributed around the circumference.

6. The far infrared oven according to claim 1, characterized in that: Each side wall (11) of the inner container (1) is made of metal or metal alloy, and the wall surface of each side wall (11) of the inner container (1) forms a diffuse reflection surface.

7. The far infrared oven according to claim 6, characterized in that: The wall surfaces of the side walls (11) of the inner container (1) are all in an undulating shape.

8. The far infrared oven according to claim 1, characterized in that: The far-infrared oven comprises a hot air blower baffle (3) fixedly mounted on the side wall (11); the electric heating tube (4) and the fan blade (21) are arranged between the side wall (11) and the hot air blower baffle (3); and the hot air blower baffle (3) is provided with an air outlet hole (32); the central area of ​​the hot air blower baffle (3) is a glass plate (31), and the glass plate (31) is arranged opposite to the electric heating tube (4).

9. The far infrared oven according to claim 1, characterized in that: The far-infrared oven comprises a door body and a box body, the inner pot (1) is fixedly arranged inside the box body, the door body is rotatably connected to the box body to open and close the opening (12) of the inner pot (1), and the hot air blower (2) and the electric heating tube (4) are both arranged on the side of the inner pot (1) opposite to the door body.

10. The far infrared oven according to claim 1, characterized in that: A plurality of the electric heating tubes (4) are provided, and the plurality of the electric heating tubes (4) are respectively arranged on different side walls (11) of the inner container (1).

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