Steaming oven with cleanable heating tubes

Abstract

The utility model relates to the technical field of cooking equipment, in particular to a steaming oven with a cleanable heating tube, which comprises a shell, an inner container, the heating tube and a protective cover, the inner container is positioned in the shell, a plurality of first through holes are arranged on the inner container, an end port of the heating tube penetrates through the first through holes, the heating tube is rotatably connected with the inner container, the protective cover is arranged on the outer wall of the inner container, and the protective cover is arranged on the outer wall of the inner container. The end connector of the heating pipe is located between the outer wall of the inner container and the inner wall of the protection cover, the protection cover enables the heating pipe and the shell to be of an insulation structure, the protection cover is of an insulation structure, the end connector of the heating pipe penetrates through the first through hole of the inner container, the protection cover is installed on the outer side of the through hole, and installation of the steaming oven capable of cleaning the heating pipe is completed. The heating pipe is turned upwards to be cleaned; as the protective cover is of an insulating structure and separates the heating tube from the shell, even if the distance between the heating tube and the shell is insufficient, the heating tube cannot be short-circuited, and the use safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of cooking equipment technology, and more specifically, to a steam oven with a washable heating element. Background Technology

[0002] Steam ovens are multi-functional cooking appliances that combine steaming, boiling, air frying, and baking. However, after use, they are prone to producing oil fumes and accumulating water on the cavity. If not cleaned promptly, this can lead to unpleasant odors. The lower heating element is often fixed in place, hindering cleaning and causing cross-contamination of odors, thus affecting usability. Failure to clean the heating element surface regularly shortens its lifespan. Furthermore, the heating element lacks independent grounding, and poor grounding can pose a risk of electric shock to users. Therefore, a heating element with these features needs to be designed to meet daily usage requirements.

[0003] Patent CN214284576U discloses a rotating heating element structure for a steam oven, including an inner cavity. A heating element is mounted on the top and / or bottom of the inner cavity, rotatably connected to the inner cavity. The inner cavity wall has mounting openings for the two ends of the heating element to extend out. A threaded sleeve is provided at the mounting opening of the heating element. A sealing element is provided inside the mounting opening of the sleeve, and a limiting part is provided on the sleeve to prevent the sealing element from shifting backward. A nut that mates with the external thread is provided on the outside of the mounting opening. A limiting sleeve is also provided on the sleeve to prevent the sealing element from deforming under pressure. This design enhances the sealing between the heating element and the inner cavity, making the sealing element less prone to deformation under pressure and ensuring a constant seal. The rotatable connection between the heating element and the inner cavity facilitates daily cleaning of the inner cavity by lifting the heating element, keeping the interior clean. However, in this design, since the outer shell is usually metal, if the distance between the interfaces at both ends of the heating element and the outer shell is insufficient, the interfaces at both ends of the heating element may simultaneously connect to the outer shell, causing a short circuit and creating a safety hazard. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art where short circuits may occur when the creepage distance of the heating element is insufficient, and to provide a steam oven with a washable heating element that will not short circuit due to insufficient distance between the heating element and the outer shell.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A steam oven with a washable heating element is provided, comprising an outer shell, an inner liner, a heating element, and a protective cover. The inner liner is located inside the outer shell and has several first through holes. The end interface of the heating element passes through the first through holes and is rotatably connected to the inner liner. A protective cover is provided on the outer wall of the inner liner. The end interface of the heating element is located between the outer wall of the inner liner and the inner wall of the protective cover. The protective cover separates the heating element from the outer shell and is an insulating structure.

[0007] This invention relates to a steam oven with a washable heating element. The end interface of the heating element is passed through a through hole in the inner liner, and a protective cover is installed on the outside of the through hole to complete the installation of the steam oven with a washable heating element. Since the heating element is rotatably connected to the inner liner, the heating element can be flipped up for easy cleaning when cleaning the heating element and the bottom of the inner liner. Because the protective cover is an insulating structure and separates the heating element from the outer shell, even if the distance between the heating element and the outer shell is insufficient, the heating element will not be connected to the outer shell, thus preventing a short circuit and ensuring safe use.

[0008] Furthermore, a heating element pressure plate is fixedly installed on the outer wall of the inner liner, and the protective cover is fixedly installed on the heating element pressure plate. The heating element passes through the heating element pressure plate, which is an insulating structure. When installing the heating element, the heating element pressure plate is fixedly installed on the outer wall of the inner liner, the heating element passes through the inner liner and the heating element pressure plate, and then the protective cover is fixedly installed on the heating element pressure plate. The end interface of the heating element is located between the protective cover and the heating element pressure plate. Since both the protective cover and the heating element pressure plate are insulating structures, the short-circuit protection capability of the steam oven with washable heating elements is further improved, enhancing safety.

[0009] Furthermore, the end interface of the heating element is provided with a grounding plate for connection to the ground wire. By providing a grounding plate on the heating element, the ground wire can be connected separately to the heating element, reducing the risk of electric shock.

[0010] Furthermore, it also includes a fixing bracket, which is fixedly mounted on the inner wall of the inner liner. The fixing bracket has a second through hole through which the end interface of the heating element passes. The heating element is mounted on the inner liner via the fixing bracket.

[0011] Furthermore, a first limiting portion is provided on the outer periphery of the heating element. The diameter of the first limiting portion is larger than the diameters of the first through hole and the second through hole. The first limiting portion is located between the fixing bracket and the inner liner. The fixing bracket and the inner wall of the inner liner prevent the heating element from falling off the inner liner by restricting the position of the first limiting portion of the heating element.

[0012] Furthermore, the inner pot is also equipped with a sealing assembly to prevent air leakage, and the heating element passes through the sealing assembly. This prevents air leakage at the first through-hole of the inner pot, which would affect the cooking effect.

[0013] Furthermore, the sealing assembly includes a first sealing element disposed between the fixed bracket and the inner wall of the inner liner, and abutting against the fixed bracket and the inner liner. The heating element passes through the first sealing element, and the inner diameter of the first sealing element is not greater than the outer diameter of the heating element. The first sealing element abuts against the fixed bracket and the inner liner, and the inner diameter of the first sealing element is equal to or slightly smaller than the outer diameter of the heating element, allowing the first sealing element to compress the fixed bracket, the inner liner, and the heating element, eliminating gaps, improving sealing performance, and preventing air leakage. Simultaneously, it also acts as a damper, increasing the frictional force experienced by the heating element during rotation, allowing the heating element to hover at any angle relative to the inner liner, facilitating cleaning of the inner liner.

[0014] Furthermore, the first sealing element includes a first sealing portion and a second sealing portion arranged perpendicularly to each other. Two sides of the first sealing portion abut against the first limiting portion and the inner liner, respectively, while two sides of the second sealing portion abut against the fixed bracket and the first limiting portion, respectively. The perpendicular arrangement of the first and second sealing portions increases the contact area between the first sealing element and the heating element, the inner liner, and the fixed bracket, improving sealing performance. Simultaneously, the contact between the first limiting portion and the first sealing portion also serves to limit the position of the first sealing element, preventing it from loosening and causing sealing failure.

[0015] Furthermore, the sealing assembly also includes a second sealing element, which is disposed between the heating element pressure plate and the outer wall of the inner liner, and abuts against the heating element pressure plate and the inner liner. The heating element passes through the second sealing element, and the inner diameter of the second sealing element is not greater than the outer diameter of the heating element. The second sealing element abuts against the heating element pressure plate and the inner liner, and the inner diameter of the second sealing element is equal to or slightly smaller than the outer diameter of the heating element, allowing the second sealing element to compress the heating element pressure plate, the inner liner, and the heating element, eliminating gaps, improving sealing performance, and preventing air leakage. Simultaneously, it also acts as a damping element, increasing the frictional force experienced by the heating element during rotation, allowing the heating element to hover at any angle relative to the inner liner, facilitating cleaning of the inner liner.

[0016] Furthermore, the heating element is provided with a limiting member to prevent it from contacting the bottom of the inner liner. The limiting member can prevent the heating element from directly contacting the inner liner and prevent leakage.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model relates to a steam oven with a washable heating element: 1. By using an insulated protective cover to separate the end interface of the heating element from the inner cavity, it prevents short circuits caused by insufficient creepage distance between the heating element and the outer shell; 2. When cleaning the inner cavity, the heating element can be flipped up for easy cleaning; 3. It has good sealing performance to prevent air leakage from the inner cavity. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the steam oven with washable heating element of this utility model, with the door hidden.

[0020] Figure 2 This is a schematic diagram of the structure of the protective cover for the steam oven with a washable heating element according to the present invention.

[0021] Figure 3 This is a first structural schematic diagram of the sealing assembly of the steam oven with a washable heating element according to the present invention.

[0022] Figure 4 This is a second structural schematic diagram of the sealing assembly of the steam oven with a washable heating element according to the present invention.

[0023] Figure 5 This is a third structural schematic diagram of the sealing assembly of the steam oven with a washable heating element according to this utility model.

[0024] In the attached diagram: 1. Heating element; 11. First limiting part; 12. Second limiting part; 13. Limiting element; 14. Grounding piece; 2. Fixing bracket; 21. First groove; 3. Inner liner; 4. Protective cover; 41. Heating element pressing plate; 411. Second groove; 5. Sealing assembly; 51. First sealing element; 511. First sealing part; 512. Second sealing part; 52. Second sealing element; 6. Outer shell. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Example 1

[0028] like Figure 1 and Figure 2 The first embodiment of the steam oven with a washable heating element of this utility model is shown, including an outer shell 6, an inner liner 3, a heating element 1, and a protective cover 4. The inner liner 3 is located inside the outer shell 6 and has several first through holes. The end interface of the heating element 1 passes through the first through holes and is rotatably connected to the inner liner 3. The outer wall of the inner liner 3 is provided with a protective cover 4. The end interface of the heating element 1 is located between the outer wall of the inner liner 3 and the inner wall of the protective cover 4. The protective cover 4 separates the heating element 1 from the outer shell 6 and is an insulating structure.

[0029] This invention relates to a steam oven with a washable heating element. The end interface of the heating element 1 is passed through the through hole of the inner liner 3, and the protective cover 4 is installed on the outside of the through hole to complete the installation of the steam oven with a washable heating element 1. Since the heating element 1 is rotatably connected to the inner liner 3, the heating element 1 can be flipped up for easy cleaning when cleaning the bottom of the heating element 1 and the inner liner 3. Since the protective cover 4 is an insulating structure and separates the heating element 1 from the outer shell 6, even if the distance between the heating element 1 and the outer shell 6 is insufficient, the heating element 1 will not be connected to the outer shell 6, thus preventing a short circuit and ensuring safe use.

[0030] like Figure 2 As shown, a heating element pressure plate 41 is fixedly installed on the outer wall of the inner liner 3, and a protective cover 4 is fixedly installed on the heating element pressure plate 41. The heating element 1 passes through the heating element pressure plate 41, which is an insulating structure. When installing the heating element 1, the heating element pressure plate 41 is fixedly installed on the outer wall of the inner liner 3, the heating element 1 passes through the inner liner 3 and the heating element pressure plate 41, and then the protective cover 4 is fixedly installed on the heating element pressure plate 41, so that the end interface of the heating element 1 is located between the protective cover 4 and the heating element pressure plate 41. Since both the protective cover 4 and the heating element pressure plate 41 are insulating structures, the short-circuit protection capability of the steam oven with washable heating elements is further improved, thus enhancing safety.

[0031] In this embodiment, the protective cover 4 and the heating element pressure plate 41 are both made of plastic, while the inner liner 3 and the fixing bracket 2 are both made of metal.

[0032] The end interface of the heating element 1 is provided with a grounding plate 14 for connection to the ground wire. By providing the grounding plate 14 on the heating element 1, the ground wire can be connected separately to the heating element 1, reducing the risk of electric shock.

[0033] The working principle of the steam oven with washable heating element in this embodiment is as follows: When installing the steam oven with washable heating element, the heating element pressure plate 41 is fixedly installed on the outer wall of the inner cavity 3. The heating element 1 passes through the first through hole into the inner cavity 3 and then through the heating element pressure plate 41. The protective cover 4 is then fixedly installed on the heating element pressure plate 41, so that the end interface of the heating element 1 is located between the protective cover 4 and the heating element pressure plate 41 to prevent short circuit between the interface of the heating element 1 and the outer shell 6. The ground wire is connected to the heating element 1 separately through the grounding plate 14 to prevent electric shock. The installation of the steam oven with washable heating element is completed. When it is necessary to clean the heating element 1 and the bottom of the inner cavity 3, the heating element 1 is rotated around the fixed bracket 2, so that the heating element 1 is flipped up to clean the inner cavity 3.

[0034] Example 2

[0035] This embodiment is the second embodiment of the steam oven with a washable heating element of this utility model. This embodiment is similar to the first embodiment, except that, as Figure 3 and Figure 4 As shown, it also includes a fixing bracket 2, which is fixedly mounted on the inner wall of the inner liner 3. The fixing bracket 2 has a second through hole, through which the end interface of the heating element 1 passes. The heating element 1 is mounted on the inner liner 3 via the fixing bracket 2.

[0036] A first limiting part 11 is provided on the outer periphery of the heating tube 1. The diameter of the first limiting part 11 is larger than the diameter of the first through hole and the second through hole. The first limiting part 11 is located between the fixing bracket 2 and the inner liner 3. The fixing bracket 2 and the inner wall of the inner liner 3 restrict the position of the first limiting part 11 of the heating tube 1 to prevent the heating tube 1 from falling off the inner liner 3.

[0037] In this embodiment, the heating tube 1 has two ends, and two fixing brackets 2 are provided. The two fixing brackets 2 are symmetrically arranged on two opposite inner walls of the inner liner 3, and the two end interfaces of the heating tube 1 pass through the second through holes of the two fixing brackets 2 respectively.

[0038] like Figure 1 and Figure 4 As shown, the heating element 1 is provided with a limiting member 13 to prevent the heating element 1 from contacting the bottom of the inner liner 3. The limiting member 13 can prevent the heating element 1 from directly contacting the inner liner 3 and prevent leakage. The limiting member 13 has a circular plate structure, and there are two limiting members 13. The heating element 1 passes through the center of the two limiting members 13. When the heating element 1 is placed at the bottom of the inner liner 3, the two limiting members 13 support the heating element 1, so that the heating element 1 does not contact the bottom of the inner liner 3.

[0039] The working principle of the steam oven with washable heating element in this embodiment is as follows: When the heating element 1 rotates to the bottom of the inner cavity 3, the limiting member 13 contacts the bottom of the inner cavity 3, separating the side of the heating element 1 from the inner cavity 3 to prevent leakage; the diameters of the second through hole of the fixing bracket 2 and the first through hole of the inner cavity 3 are both smaller than the diameter of the first limiting member 13, thereby restricting the position of the first limiting part 11 of the heating element 1 and preventing the heating element 1 from falling off the inner cavity 3 during rotation.

[0040] Example 3

[0041] This embodiment is the third embodiment of the steam oven with a washable heating element of this utility model. This embodiment is similar to embodiment two, except that, as Figure 3 and Figure 4 As shown, the inner pot 3 is also equipped with a sealing component 5 to prevent air leakage, and the heating element 1 passes through the sealing component 5. This prevents air leakage at the first through hole of the inner pot 3, which would affect the cooking effect.

[0042] The sealing assembly 5 includes a first sealing element 51, which is disposed between the fixed bracket 2 and the inner wall of the inner liner 3 and abuts against the fixed bracket 2 and the inner liner 3. The heating element 1 passes through the first sealing element 51, and the inner diameter of the first sealing element 51 is not greater than the outer diameter of the heating element 1. The first sealing element 51 abuts against the fixed bracket 2 and the inner liner 3, and the inner diameter of the first sealing element 51 is equal to or slightly smaller than the outer diameter of the heating element 1, so that the first sealing element 51 can squeeze the fixed bracket 2, the inner liner 3 and the heating element 1, eliminate gaps, improve sealing performance and prevent air leakage; at the same time, it can also play a damping role, increasing the friction force that the heating element 1 will experience when rotating, so that the heating element 1 can be suspended at any angle relative to the inner liner 3, which facilitates cleaning of the inner liner 3.

[0043] like Figure 5 As shown, the first sealing element 51 includes a first sealing portion 511 and a second sealing portion 512 arranged perpendicularly to each other. The two sides of the first sealing portion 511 abut against the first limiting portion 11 and the inner liner 3, respectively. The two sides of the second sealing portion 512 abut against the fixing bracket 2 and the first limiting portion 11, respectively. The perpendicular arrangement of the first sealing portion 511 and the second sealing portion 512 increases the contact area between the first sealing element 51 and the heating element 1, the inner liner 3, and the fixing bracket 2, thereby improving the sealing performance. At the same time, the contact between the first limiting portion 11 and the first sealing portion 511 also serves to limit the first sealing element 51, preventing the first sealing element 51 from loosening and causing sealing failure.

[0044] The fixed bracket 2 is provided with a first groove 21 that mates with the first seal 51, and a second through hole is provided at the center of the first groove 21. The first seal 51 abuts against all the inner walls of the first groove 21.

[0045] The sealing assembly 5 also includes a second seal 52, which is disposed between the heating element pressure plate 41 and the outer wall of the inner liner 3, and abuts against the heating element pressure plate 41 and the inner liner 3. The heating element 1 passes through the second seal 52, and the inner diameter of the second seal 52 is smaller than the outer diameter of the heating element 1. The second seal 52 abuts against the heating element pressure plate 41 and the inner liner 3, and the inner diameter of the second seal 52 is slightly smaller than the outer diameter of the heating element 1, so that the second seal 52 can squeeze the heating element pressure plate 41, the inner liner 3 and the heating element 1, eliminate gaps, improve sealing performance and prevent air leakage; at the same time, it can also play a damping role, increasing the friction force that the heating element 1 will experience when rotating, so that the heating element 1 can be suspended at any angle relative to the inner liner 3, which facilitates cleaning of the inner liner 3.

[0046] The second seal 52 cooperates with the first seal 51 to achieve a double seal, further improving the sealing performance. At the same time, it further increases the damping of the rotation of the heating tube 1, so that the heating tube 1 can be stably suspended when rotating at any angle.

[0047] In this embodiment, the heating element pressure plate 41 is provided with a second groove 411 that mates with the second sealing member 52. The second sealing member 52 abuts against all the inner walls of the second groove 411. The heating element 1 is provided with a second limiting part 12, which is located between the protective cover 4 and the heating element pressure plate 41, and serves to limit the second sealing member 52 to prevent it from falling off. A grounding piece 14 is provided on the second limiting part 12.

[0048] Both the first sealing element 51 and the second sealing element 52 are made of silicone. Silicone has good adaptability to high-temperature environments, capable of withstanding the high temperatures generated by the heating element 1; it is corrosion-resistant, adapting to complex cooking environments; and it also has insulation properties, preventing short circuits in the heating element 1 and improving safety. In addition, it effectively prevents friction between the inner liner 3 and the fixed bracket 2, thus preventing noise.

[0049] The working principle of the steam oven with a washable heating element in this embodiment is as follows: When installing the sealing assembly 5, the first sealing element 51 and the second sealing element 52 are respectively embedded into the first groove 21 and the second groove 411. The fixing bracket 2 and the heating element pressure plate 41 are respectively fixedly installed on the inner wall and outer wall of the inner cavity 3. The two sides of the first sealing part 511 of the first sealing element 51 abut against the first limiting part 11 and the inner cavity 3, respectively. The two sides of the second sealing part 512 abut against the first limiting part 11 and the first groove 21, respectively. The second sealing element 52 abuts against the second groove 411 and the side wall of the heating element 1, thereby achieving a double seal on the first through hole of the inner cavity 3, preventing the inner cavity 3 from leaking air and affecting the cooking effect. The first sealing element 51 and the second sealing element 52 increase the damping of the rotation of the heating element 1, so that the heating element 1 can be stably suspended when rotating at any angle, which is convenient for cleaning the inner cavity 3. At the same time, it prevents friction between the inner cavity 3 and the fixing bracket 2, which would generate noise and affect the user experience.

[0050] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A steam oven capable of cleaning a heating tube, characterized by comprising: The utility model provides a heating tube protection device, including shell (6), inner container (3), heating tube (1) and protective cover (4), the inner container (3) is located in the shell (6), be equipped with a plurality of first through -hole on the inner container (3), the end interface of heating tube (1) passes through the first through -hole, heating tube (1) is connected with the inner container (3) rotation, the outer wall of inner container (3) is equipped with protective cover (4), the end interface of heating tube (1) is located between the outer wall of inner container (3) and the inner wall of protective cover (4), protective cover (4) separates heating tube (1) with shell (6), and protective cover (4) is insulating structure.

2. The cleanable tube oven of claim 1, wherein, The outer wall of the inner container (3) is fixedly provided with a heating tube pressing plate (41), and the protective cover (4) is fixedly installed on the heating tube pressing plate (41). The heating tube (1) passes through the heating tube pressing plate (41), and the heating tube pressing plate (41) is an insulating structure.

3. The cleanable tube oven of claim 1, wherein, The end interface of the heating tube (1) is provided with a grounding sheet (14) for connecting with a ground wire.

4. The cleanable tube oven of claim 2, wherein, Further comprising a fixed support (2), the fixed support (2) is fixedly arranged on the inner wall of the inner container (3), the fixed support (2) is provided with a second through hole, and the end interface of the heating tube (1) passes through the second through hole.

5. The cleanable tube oven of claim 4, wherein, The outer periphery of the heating tube (1) is provided with a first limiting portion (11), the diameter of the first limiting portion (11) is greater than the diameter of the first through hole and the second through hole, and the first limiting portion (11) is located between the fixed support (2) and the inner container (3).

6. The cleanable tube oven of claim 5, wherein, The inner container (3) is further provided with a sealing assembly (5) for preventing the inner container (3) from leaking, and the heating tube (1) passes through the sealing assembly (5).

7. The cleanable tube oven of claim 6, wherein, The sealing assembly (5) comprises a first sealing member (51), the first sealing member (51) is arranged between the fixed support (2) and the inner wall of the inner container (3) and abuts against the fixed support (2) and the inner container (3), the heating tube (1) passes through the first sealing member (51), and the inner diameter of the first sealing member (51) is not greater than the outer diameter of the heating tube (1).

8. The cleanable tube oven of claim 7, wherein, The first sealing member (51) comprises a first sealing portion (511) and a second sealing portion (512) arranged perpendicular to each other, two side surfaces of the first sealing portion (511) abut against the first limiting portion (11) and the inner container (3) respectively, and two side surfaces of the second sealing portion (512) abut against the fixed support (2) and the first limiting portion (11) respectively.

9. The cleanable tube oven of claim 6, wherein, The sealing assembly (5) further comprises a second sealing member (52), the second sealing member (52) is arranged between the heating tube pressing plate (41) and the outer wall of the inner container (3) and abuts against the heating tube pressing plate (41) and the inner container (3), the heating tube (1) passes through the second sealing member (52), and the inner diameter of the second sealing member (52) is not greater than the outer diameter of the heating tube (1).

10. The cleanable tube oven of claim 1, wherein, The side wall of the heating tube (1) is provided with a limiting member (13) for preventing the heating tube (1) from contacting the bottom of the inner container (3).

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