Cooking equipment with hot air heating function

Abstract

The present invention discloses a cooking device with hot air heating function, which includes an inner pot, a shell, a fan assembly, a heating device and a heat insulation structure. The side wall of the inner pot is provided with an air inlet and an air outlet; the shell is installed on the outer wall of the inner pot, and an installation cavity is provided between the shell and the outer wall of the inner pot, and the installation cavity is connected with the air inlet and the air outlet; the fan assembly is at least partially arranged in the installation cavity; the heating device is arranged on the shell and is located in the installation cavity; the heat insulation structure is arranged on the outer wall of the inner pot and is located in the installation cavity, and the heat insulation structure is used to prevent the heating device from transferring heat to the inner pot. According to the cooking device with hot air heating function of the embodiment of the present invention, it can reduce the heat transfer between the heating device and the side wall of the inner pot, avoid the large difference between the temperature at the side wall of the inner pot and the temperature of other areas of the inner pot, and can improve the temperature uniformity inside the inner pot, thereby improving the food processing quality.

Description

Technical Field

[0001] The invention relates to the field of cooking equipment, and in particular to a cooking equipment with a hot air heating function. Background Art

[0002] The hot air heating device of existing cooking equipment such as ovens or steam-bake combination machines is generally arranged on the side wall of the inner pot. The hot air heating device usually includes a fan and a shell. When a heating tube is arranged in the shell, the heat generated by the heating tube during operation will directly heat the side wall of the inner pot, resulting in a large difference between the temperature of the area close to the shell in the inner pot and the temperature of other areas in the inner pot. The temperature uniformity inside the inner pot is not good, and some food may be overheated while other food is not fully heated, which affects the processing effect of the food. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a cooking device with hot air heating function, which can prevent the heating device from directly heating the side wall of the inner pot, thereby improving the temperature uniformity inside the inner pot.

[0004] According to an embodiment of the present invention, a cooking device with hot air heating function comprises an inner pot, a shell, a fan assembly, a heating device and a heat insulation structure. The side wall of the inner pot is provided with an air inlet and an air outlet; the shell is installed on the outer wall of the inner pot, and an installation cavity is provided between the shell and the outer wall of the inner pot, and the installation cavity is connected with the air inlet and the air outlet; the fan assembly is at least partially arranged in the installation cavity; the heating device is arranged in the shell and located in the installation cavity; the heat insulation structure is arranged on the outer wall of the inner pot and located in the installation cavity, and the heat insulation structure is used to prevent the heating device from transferring heat to the inner pot.

[0005] The cooking device with hot air heating function according to the embodiment of the present invention has at least the following beneficial effects: when the fan assembly is working, the gas in the inner pot can enter the installation cavity from the air inlet, and the gas in the installation cavity can enter the inner pot from the air outlet; the heat insulation structure can hinder the heating device from transferring heat to the side wall of the inner pot, avoiding the side wall of the inner pot 100 from heating up too quickly, thereby avoiding a large difference between the temperature at the side wall of the inner pot and the temperature of other areas of the inner pot, which can improve the temperature uniformity inside the inner pot, thereby improving the quality of food processing.

[0006] According to some embodiments of the present invention, the heat insulation structure includes a partition, which is installed on the outer wall of the inner tank, and the partition is provided with a first avoidance hole facing the air outlet, and the partition is provided with a second avoidance hole facing the air inlet.

[0007] According to some embodiments of the present invention, there is a gap between the partition and the side wall of the inner container.

[0008] According to some embodiments of the present invention, a first air guiding structure is provided between the first avoidance hole and the air outlet.

[0009] According to some embodiments of the present invention, the first air guiding structure includes a first flange, the cross-sectional shape of the first flange is annular, one end of the first flange is connected to the side wall of the first avoidance hole, and the other end is connected to the air outlet.

[0010] According to some embodiments of the present invention, the fan assembly is directly opposite to the air inlet, and a second air guide structure is provided between the fan assembly and the air inlet.

[0011] According to some embodiments of the present invention, the second air guide structure includes a first air guide ring, which is arranged in the installation cavity, one end of the first air guide ring is connected to the side wall of the second avoidance hole, and the other end of the first air guide ring is opposite to the fan assembly.

[0012] According to some embodiments of the present invention, a third air guiding structure is provided between the second avoidance hole and the air inlet, and the third air guiding structure can prevent the gap from affecting the circulation of gas.

[0013] According to some embodiments of the present invention, the third air guide structure includes an air guide plate and a second air guide ring, the air guide plate is arranged between the partition and the side wall of the inner tank, the air guide plate is provided with a third avoidance hole facing the air inlet, one end of the second air guide ring is connected to the side wall of the third avoidance hole, and the other end is connected to the second avoidance hole.

[0014] According to some embodiments of the present invention, the fan assembly includes fan blades, which are rotatably disposed in the installation cavity, the fan blades are directly opposite to the air inlet, the heating device is configured as a ring-shaped heating tube, the heating tube is sleeved on the fan blades, and the air outlet is located around the air inlet.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A schematic diagram of a cooking device with hot air heating function according to an embodiment of the present invention;

[0018] Figure 2 An exploded view of a cooking device with hot air heating function according to an embodiment of the present invention;

[0019] Figure 3 A partial cross-sectional view of a cooking device with hot air heating function according to an embodiment of the present invention;

[0020] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0021] Figure 5 is a schematic diagram of a partition according to an embodiment of the present invention;

[0022] Figure 6 Schematic diagram of an inner container according to an embodiment of the present invention.

[0023] Reference numerals:

[0024] Inner tank 100, air inlet 110, air outlet 120;

[0025] Housing 200, mounting cavity 210;

[0026] Fan assembly 300, fan blades 310, motor 320;

[0027] Heating device 400;

[0028] A partition 510, a gap 520, a first avoidance hole 511, a second avoidance hole 512, a first flange 513, and a first air guide ring 514;

[0029] The air guide plate 600, the third avoidance hole 610, the fourth avoidance hole 620, the second flange 630, and the second air guide ring 640;

[0030] A first sealing member 710 , a second sealing member 720 , a third sealing member 730 , and a positioning column 731 . DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are 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 device or element referred to 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.

[0033] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figures 1 to 3 According to an embodiment of the present invention, a cooking device with hot air heating function includes an inner pot 100, a shell 200, a fan assembly 300, a heating device 400 and a heat insulation structure. The side wall of the inner pot 100 is provided with an air inlet 110 and an air outlet 120; the shell 200 is installed on the outer wall of the inner pot 100, and an installation cavity 210 is provided between the shell 200 and the outer wall of the inner pot 100, and the installation cavity 210 is connected with the air inlet 110 and the air outlet 120; the fan assembly 300 is at least partially arranged in the installation cavity 210; the heating device 400 is arranged in the shell 200 and is located in the installation cavity 210; the heat insulation structure is arranged on the outer wall of the inner pot 100 and is located in the installation cavity 210, and the heat insulation structure is used to prevent the heating device 400 from transferring heat to the inner pot 100. When the fan assembly 300 is working, the gas in the inner pot 100 can enter the installation cavity 210 from the air inlet 110, and the gas in the installation cavity 210 can enter the inner pot 100 from the air outlet 120; the heat insulation structure can prevent the heating device 400 from transferring heat to the side wall of the inner pot 100, avoiding the side wall of the inner pot 100 from heating up too quickly, thereby avoiding a large difference between the temperature at the side wall of the inner pot 100 and the temperature of other areas of the inner pot 100, which can improve the temperature uniformity inside the inner pot 100, thereby improving the quality of food processing.

[0036] Reference Figure 2 , Figure 3 and Figure 6 In some embodiments, the fan assembly 300 includes a fan blade 310, which is rotatably disposed in the installation cavity 210, and the fan blade 310 is directly opposite to the air inlet 110. The heating device 400 is configured as a ring-shaped heating tube, and the fan blade 310 is located in the middle of the heating tube, and the air outlet 120 is located around the air inlet 110. When the fan blade 310 rotates, the gas in the inner liner 100 can enter the installation cavity 210 through the air inlet 110, and then the gas is sent to the heating tube through the fan blade 310 for heating, and finally re-enters the inner liner 100 from the air outlet 120.

[0037] Reference Figures 1 to 3 In some embodiments, the fan assembly 300 further includes a motor 320 , which is disposed in the housing 200 and outside the mounting cavity 210 , and the motor 320 is transmission-connected to the fan blades 310 to drive the fan blades 310 to rotate.

[0038] Reference Figures 2 to 5 In some embodiments, the heat insulation structure includes a partition 510, and the partition 510 is installed on the outer wall of the inner liner 100, and there is a gap 520 between the partition 510 and the side wall of the inner liner 100. The thermal conductivity of gas is much lower than that of metal. Therefore, the gas in the gap 520 can be used to prevent the heating device 400 from transferring heat to the side wall of the inner liner 100. At this time, the partition 510 can be made of general materials such as metal, which will not affect the heat insulation effect and can reduce costs. Of course, those skilled in the art can understand that in some embodiments, the above-mentioned heat insulation structure can also be set in other ways. For example, the partition 510 can also be made of heat insulation materials such as glass fiber and vacuum board. In this case, the above-mentioned gap 520 does not need to be set, and a good heat insulation effect can also be achieved.

[0039] Reference Figures 2 to 5 In some embodiments, the partition plate 510 is provided with a first avoidance hole 511 directly opposite to the air outlet 120 , and the partition plate 510 is provided with a second avoidance hole 512 directly opposite to the air inlet 110 .

[0040] Reference Figures 2 to 5 In some embodiments, a first air guiding structure is provided between the first avoidance hole 511 and the air outlet 120 .

[0041] Reference Figures 2 to 5 Specifically, in some embodiments, the first air guide structure includes a first flange 513, the cross-sectional shape of the first flange 513 is annular, one end of the first flange 513 is connected to the side wall of the first avoidance hole 511, and the other end is connected to the air outlet 120. Through the first flange 513, an air guide channel is formed between the first avoidance hole 511 and the air outlet 120, so that the high-temperature gas in the installation cavity 210 becomes straight wind after passing through the air guide channel. The straight wind has a longer stroke in the inner liner 100, which is conducive to the high-temperature gas reaching more areas inside the inner liner 100 and reducing the temperature deviation between the various areas inside the inner liner 100. In addition, the first flange 513 can prevent the gas from entering the gap 520, improve the heat insulation effect of the gap 520, and prevent the gap 520 from affecting the gas flow between the first avoidance hole 511 and the air outlet 120.

[0042] It should be noted that the above-mentioned first air guiding structure may also be arranged in other ways. For example, in some embodiments, one end of the above-mentioned first flange 513 may be connected to the side wall of the air outlet 120 , and the other end may be connected to the first avoidance hole 511 .

[0043] It is understandable to those skilled in the art that, in the existing cooking equipment, the side wall of the inner pot 100 is relatively thin and the length of the air inlet is insufficient. After the gas in the inner pot 100 passes through the air inlet 110, it is easily affected by factors such as the airflow in the installation cavity 210 and the fan blades 310, forming local turbulence, which causes part of the gas to be unable to reach the heating device 400 for heating, and also causes part of the high-temperature gas to be unable to be well discharged from the installation cavity 210. For this reason, refer to Figure 2 and Figure 3 In some embodiments, the fan assembly 300 is directly opposite to the air inlet 110 , and a second air guide structure is provided between the fan assembly 300 and the air inlet 110 .

[0044] Reference Figure 2 and Figure 3 Specifically, in some embodiments, the second air guide structure includes a first air guide ring 514, the first air guide ring 514 is disposed in the installation cavity 210, one end of the first air guide ring 514 is connected to the side wall of the second avoidance hole 512, and the other end of the first air guide ring 514 is directly opposite to the fan assembly 300. The other end of the first air guide ring 514 is directly opposite to the fan blade 310, and the distance between the first air guide ring 514 and the fan blade 310 should be appropriate to prevent the first air guide ring 514 from affecting the operation of the fan blade 310. Through the first air guide ring 514, an air guide channel is formed at the second avoidance hole 512. During operation, the gas entering the installation cavity 210 is first effectively gathered and guided through the air guide channel, and then the gas reaches the fan blade 310. Through the above-mentioned arrangement, it is possible to avoid the gas entering the installation cavity 210 from forming turbulence before reaching the fan blades 310, resulting in a situation where part of the gas cannot be delivered to the heating device 400 by the fan blades 310 for heating; in addition, since the air outlet 120 is arranged around the air inlet 110, correspondingly, the first avoidance hole 511 is located around the second avoidance hole 512. Through the above-mentioned arrangement, the first air guide ring 514 can avoid the airflow at the first avoidance hole 511 and the airflow at the second avoidance hole 512 from influencing each other and generating turbulence, which is beneficial for the gas in the installation cavity 210 to be discharged into the inner liner 100.

[0045] Reference Figures 2 to 4 In some embodiments, the second air guide structure also includes a second air guide ring 640, which is disposed between the second avoidance hole 512 and the air inlet 110 to prevent gas from entering the gap 520, thereby improving the heat insulation effect of the gap 520 and preventing the gap 520 from affecting the circulation of gas.

[0046] Reference Figures 2 to 4Specifically, in some embodiments, an air guide plate 600 is provided between the partition plate 510 and the inner liner 100, the air guide plate 600 is installed on the outer wall of the inner liner 100, a third avoidance hole 610 facing the air inlet 110 is provided on the air guide plate 600, one end of the second air guide ring 640 is connected to the side wall of the third avoidance hole 610, and the other end is connected to the second avoidance hole 512. Through the second air guide ring 640, an air guide duct is formed between the second avoidance hole 512 and the air inlet 110 to prevent the gap 520 from affecting the gas flow between the second avoidance hole 512 and the air inlet 110.

[0047] It should be noted that, in some embodiments, the above-mentioned second air guide structure can also be arranged in other ways. For example, in some embodiments, one end of the first air guide ring 514 can be connected to the inner liner 100, and the other end passes through the second avoidance hole 512 and is located in the installation cavity 210. In this case, the second air guide ring 640 may not be required, and the first air guide ring 514 can also prevent the gap 520 from affecting the gas circulation between the second avoidance hole 512 and the air inlet 110.

[0048] Reference Figures 2 to 4 In some embodiments, the air guide plate 600 is provided with a fourth avoidance hole 620 directly facing the air outlet 120, and a second flange 630 is provided on the side wall of the fourth avoidance hole 620. The second flange 630 is arranged toward the first avoidance hole 511 and directly facing the second flange 630. Through the cooperation between the first flange 513 and the second flange 630, an air guide channel can be formed between the first avoidance hole 511 and the air outlet 120.

[0049] It should be noted that, through the above arrangement, the gap 520 between the air guide plate 600 and the partition plate 510 can be in a closed state, so as to improve the heat insulation effect of the gap 520 .

[0050] Reference Figures 2 to 4 In some embodiments, a first sealing structure is provided between the air guide plate 600 and the partition plate 510. Specifically, the first sealing structure can be provided as a first annular sealing member 710, and two ends of the first sealing member 710 abut against the air guide plate 600 and the partition plate 510, respectively.

[0051] Reference Figures 2 to 4 In some embodiments, a second sealing structure is provided between the partition 510 and the shell 200. Specifically, the second sealing structure can be provided as an annular second sealing member 720, and two ends of the second sealing member 720 are respectively in contact with the shell 200 and the partition 510.

[0052] Reference Figures 2 to 4In some embodiments, a third sealing structure is provided between the air guide plate 600 and the inner liner 100. Specifically, the third sealing structure can be provided as a third annular sealing member 730, and the two ends of the third sealing member 730 are respectively in contact with the air guide plate 600 and the inner liner 100.

[0053] Reference Figures 2 to 4 , in some embodiments, a positioning structure capable of fixing the relative position between the shell 200 and the partition 510 is also included. Specifically, the positioning structure includes a positioning column 731 arranged on the third seal 730, and correspondingly, the partition 510, the air guide plate 600, the shell 200, the first seal 710 and the second seal 720 are all provided with positioning holes, and the positioning column 731 is inserted into the positioning hole. During the installation process, the relative positions of the partition 510, the air guide plate 600 and other structures are first limited by the positioning structure to facilitate the assembly of the partition 510, the air guide plate 600 and other structures. Of course, it can be understood by those skilled in the art that the positioning structure can also be arranged in other ways. For example, the above-mentioned positioning column 731 can be arranged on the shell 200, and correspondingly, the partition 510, the air guide plate 600 and other structures are provided with positioning holes.

[0054] 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.

[0055] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A cooking device with hot air heating function, characterized in that: include: An inner liner (100), wherein a side wall of the inner liner (100) is provided with an air inlet (110) and an air outlet (120); a shell (200) mounted on the outer wall of the inner liner (100), an installation cavity (210) being provided between the shell (200) and the outer wall of the inner liner (100), the installation cavity (210) being in communication with the air inlet (110) and the air outlet (120); A fan assembly (300) is at least partially disposed in the installation cavity (210); A heating device (400) is arranged in the housing (200) and is located in the installation cavity (210); a heat insulation structure, arranged on an outer wall of the inner liner (100) and located in the installation cavity (210), the heat insulation structure being used to prevent the heating device (400) from transferring heat to the inner liner (100); The heat insulation structure comprises a partition (510), wherein the partition (510) is installed on an outer side wall of the inner container (100), and a gap (520) exists between the partition (510) and the side wall of the inner container (100); The partition plate (510) is provided with a first avoidance hole (511) directly opposite to the air outlet (120), and the partition plate (510) is provided with a second avoidance hole (512) directly opposite to the air inlet (110); A first air guide structure is provided between the first avoidance hole (511) and the air outlet (120); The first air guide structure comprises a first flange (513), the cross-section of the first flange (513) is annular, one end of the first flange (513) is connected to the side wall of the first avoidance hole (511), and the other end is connected to the air outlet (120); The fan assembly (300) is directly opposite to the air inlet (110), and a second air guide structure is provided between the fan assembly (300) and the air inlet (110); The second air guide structure comprises a first air guide ring (514), the first air guide ring (514) being arranged in the installation cavity (210), one end of the first air guide ring (514) being connected to the side wall of the second avoidance hole (512), and the other end of the first air guide ring (514) being directly opposite to the fan assembly (300).

2. The cooking device with hot air heating function according to claim 1, characterized in that: The second air guide structure further comprises a second air guide ring (640), wherein the second air guide ring (640) is arranged between the second avoidance hole (512) and the air inlet (110) to prevent the gap (520) from affecting the circulation of gas.

3. The cooking device with hot air heating function according to claim 2, characterized in that: An air guide plate (600) is provided between the partition plate (510) and the inner liner (100); the air guide plate (600) is mounted on the outer wall of the inner liner (100); a third avoidance hole (610) directly facing the air inlet (110) is provided on the air guide plate (600); one end of the second air guide ring (640) is connected to the side wall of the third avoidance hole (610), and the other end is connected to the second avoidance hole (512).

4. The cooking device with hot air heating function according to claim 1, characterized in that: The heating device (400) is configured as a ring-shaped heating tube, the fan assembly (300) includes a fan blade (310), the fan blade (310) is rotatably disposed in the installation cavity (210), the fan blade (310) is directly opposite to the air inlet (110), and the fan blade (310) is located in the middle of the heating tube, and the air outlet (120) is located around the air inlet (110).

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