Steaming piece

Abstract

According to the scheme, the steaming piece comprises a placing face, and the placing face is provided with a plurality of concave flow guide channels. The bottom face of the flow guide channel obliquely extends downwards from the first end to the second end. A first through hole is formed in the position, close to the second end, of the placing face. The steaming piece is provided with a second through hole. Wherein the second through hole is close to the first through hole, the second through hole is correspondingly located in the side, away from the second end, of the first through hole, and the hole diameter of the second through hole is smaller than that of the first through hole. According to the scheme, the second through holes are formed, so that the technical problem that condensate water flows around the first through holes and is difficult to discharge out of the steaming pieces is solved.

Description

Technical Field

[0001] This application relates to the field of cooking utensils, and in particular to a steamer plate. Background Technology

[0002] Traditional steamers are often equipped with steaming racks. After the steaming racks are placed in the steamer, they can divide the steamer into multiple spaces of different heights in the vertical direction. Each steaming rack can be used as a support for food to be steamed.

[0003] Steamers heat food with steam. When the steam cools down, it condenses into liquid and adheres to the walls of the steamer before flowing back onto the steaming racks. This condensation accumulates on the racks and remains in contact with the food for an extended period, affecting the taste of the food.

[0004] To solve the above problems, the commonly used solution is to set a convex placement platform and a concave condensate drainage channel on the steaming plate, and to set a through hole on one side of the drainage channel to allow the condensate to flow out. When food is placed on the placement platform, the condensate flows along the drainage channel to the through hole and then flows out of the steaming plate, so that a large amount of condensate will not remain on the surface of the steaming plate, thus reducing the impact of condensate on the taste of food.

[0005] However, current steaming racks still suffer from condensation retention. This is because, while theoretically the liquid should flow out of the steaming rack through the holes, in actual use, the flow rate of condensation is relatively low. When the condensation reaches the opening of the holes, the surface tension of the liquid and the adhesive force between the condensation and the steaming rack prevent it from flowing directly into the holes. Instead, it bypasses the holes and continues to accumulate on the surface of the steaming rack. Only after a certain amount of condensation has accumulated can its gravity overcome the aforementioned stress and flow into the holes. Clearly, before a certain amount of condensation accumulates, it remains on the steaming rack and cannot drain. This condensation will still come into contact with the food, affecting its texture and taste.

[0006] There is a misconception in current technology that larger orifice diameters allow for a greater flow of condensate, seemingly facilitating condensate drainage from the evaporator. However, based on the above analysis, larger orifice diameters actually create a larger area for liquid adhesion, making condensate more likely to adhere to the orifice walls and thus inhibiting condensate flow. Therefore, designing larger orifices may actually make condensate drainage more difficult. Consequently, current technology lacks a solution to alleviate this problem. Utility Model Content

[0007] In view of the above problems, this application provides a steam plate that improves the problem that condensate is difficult to flow down through the through holes and accumulates on the surface of the steam plate when the total amount is small, by adjusting the structure of the steam plate.

[0008] Specifically, this application provides a solution for a steaming plate, including a placement surface, the placement surface being provided with a plurality of recessed flow channels; the bottom surface of the flow channels extends downward at an incline from a first end to a second end; the placement surface is provided with a first through hole near the second end; the steaming plate is provided with a second through hole; wherein, the second through hole is close to the first through hole, and the second through hole is located on the side of the first through hole away from the second end, and the diameter of the second through hole is smaller than the diameter of the first through hole.

[0009] In the above solution, when condensate flows around the first through-hole instead of flowing into it, this condensate will come into contact with the second through-hole after bypassing the first through-hole. On the one hand, the condensate will come into contact with more through-holes during its flow path, thereby increasing the probability of condensate flowing into the through-holes and reducing the probability of condensate accumulating on the surface of the steam fins. On the other hand, the diameter of the second through-hole is smaller than that of the first through-hole, so the contact area between the second through-hole and the condensate is smaller than that of the first through-hole, and the resulting adhesion force is also relatively smaller, making it easier for condensate to flow into the second through-hole and eventually flow out of the steam fins. In summary, the above solution improves the problem of condensate being difficult to drain from the steam fins, reduces the amount of condensate accumulating on the steam fins, and thus improves the user experience.

[0010] In an optional embodiment, the steam plate further includes an extension that extends upward relative to the placement surface, with the first through hole located close to the extension.

[0011] The design of the upward-sloping extension has two advantages. First, when the steaming plate is placed in the steamer, the extension abuts against the side wall of the steamer, thus providing radial positioning for the steaming plate. Second, since the first through hole is close to the extension, when the condensate bypasses the first through hole, it will be blocked by the extension, causing the condensate to accumulate at the root of the extension. Once a certain amount of condensate has accumulated, it can be directly discharged from the first through hole, which facilitates the condensate to flow back into the first through hole and out of the steaming plate.

[0012] In some embodiments, the second through hole is disposed in the extension, and the wall of the second through hole extends to the intersection of the extension and the placement surface.

[0013] In this implementation, the second through-hole in the extension faces directly towards the direction of condensate flow. Therefore, the momentum of the flowing condensate facilitates its entry into the second through-hole, thereby promoting its discharge from the evaporator fins. Condensate blocked by the extension accumulates at the bottom of the extension, and the wall of the second through-hole extends to the intersection of the extension and the placement surface, facilitating the flow of condensate accumulated at the bottom of the extension into the second through-hole.

[0014] In some implementations, the tilt angle of the flow channel is greater than or equal to 1.5°.

[0015] Since the condensate needs to flow along the guide channel to the first and second through holes, the inclination angle of the guide channel is set to be greater than 1.5°. This is beneficial to promote the movement of the condensate to the second end and to give the condensate a certain flow velocity and thus a certain momentum, which is conducive to the condensate flowing into the first and second through holes.

[0016] In some embodiments, at least two second through holes are provided near any first through hole; wherein, for an auxiliary straight line passing through the center of the steam plate and the center of the first through hole, the two second through holes are respectively located on both sides of the auxiliary straight line.

[0017] Based on the flow characteristics of condensate, when condensate flows to the first through-hole and causes flow around it, the condensate is often divided into two branches by the first through-hole. Therefore, one first through-hole is configured with two second through-holes, and the two second through-holes correspond to the two branches respectively, so that no matter which branch the condensate flows along, it will eventually flow to at least one second through-hole, which is conducive to the discharge of condensate.

[0018] In some embodiments, the placement surface is further provided with a plurality of placement bosses, which protrude upward relative to the flow channel; wherein the upper surface of the placement bosses is constructed as a plane.

[0019] The placement platform is used to place food. With the food supported by the platform, it is kept as far away as possible from the bottom surface of the flow channel, thus reducing the likelihood of contact between the food and condensation. Furthermore, the upper surface of the placement platform is configured as a flat surface, which helps to place the food stably. Stable food is less likely to be uneven, thus reducing the chance of it entering the recessed flow channel and further decreasing the probability of contact between the food and condensation.

[0020] In some embodiments, the placement boss is provided with a plurality of third through holes; wherein, along the radial direction from the center to the edge of the steam plate, the diameter of the plurality of third through holes increases sequentially.

[0021] The third through-hole located on the placement platform allows rising steam to directly contact the food, increasing heating efficiency. Furthermore, the central area of ​​the steamer's bottom receives more heat than the edges, resulting in higher water evaporation efficiency in the center. Therefore, the third through-hole near the center has a smaller diameter, while the one near the edge has a larger diameter, allowing more steam to escape compared to the one in the center. When the steam volume is high, the steam flow in the central through-hole reaches its maximum value more quickly. Excess steam then flows out through the larger diameter through-hole near the edge, helping to balance the steam flow in different areas. This results in more even heating of all parts of the food, improving the user experience.

[0022] In some embodiments, the placement boss extends radially along the steam plate, and the recess between adjacent placement bosses forms the flow channel; wherein, along the direction from the first end to the second end, the depth of the flow channel gradually increases, the width of the flow channel gradually increases, and the width of the plane gradually increases.

[0023] In the above design, the width of the flow channel is smaller at the shallower part and larger at the deeper part. Therefore, the flow channel provides less resistance to the liquid as it flows from the shallower to the deeper part, which is beneficial for guiding the liquid. On the other hand, because the second end is wider, the spacing between the corresponding placement bosses is also larger, making it easier for food to be placed unevenly. Therefore, increasing the width of the plane corresponding to the second end helps to ensure that the food can be placed more stably on the placement surface.

[0024] In some implementations, a plurality of fourth through holes are provided near the center of the steaming plate, and a fifth through hole is provided at the center of the steaming plate.

[0025] Since there is often a large amount of steam, it is more likely to condense in the center at the top and fall directly down. At this time, the fourth through hole, located near the center, allows this condensate to flow out directly, improving drainage efficiency. The fifth through hole also guides the condensate out of the steam plate, and also serves as a finger hole for the user to easily remove the steam plate.

[0026] In some embodiments, the wall of the fifth through hole is folded up to form a folded portion.

[0027] The folded section increases the axial length of the fifth through hole, which in turn increases the thickness of the part that the user's fingers can touch, making it less likely to cut the user's hands when pinching the steaming plate.

[0028] Based on the above solution, even if the condensate bypasses the first through hole, the second through hole can still guide the condensate out of the placement surface, thereby reducing the amount of water accumulation on the steaming plate, alleviating to some extent the problem of excessive condensate affecting the taste of food, and improving the user experience.

[0029] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it according to the contents of the specification, and to make the above and other objects, features and advantages of this application more apparent, some specific embodiments of this application are given below. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0031] Figure 1 This is a schematic diagram of the structure of the steam plate provided in the embodiments of this application;

[0032] Figure 2 For the embodiments of this application along Figure 1 A schematic diagram of a half section after being cut along line AA;

[0033] Figure 3 for Figure 2 A partial schematic diagram of part B in the diagram;

[0034] Figure 4 for Figure 2 A partial schematic diagram of part C in the diagram;

[0035] Figure 5 for Figure 1 A partial schematic diagram of part D in the diagram;

[0036] The reference numerals in the detailed embodiments are as follows:

[0037] 11. First through hole; 12. Second through hole; 13. Third through hole; 14. Fourth through hole; 15. Fifth through hole;

[0038] 2. Flow channel; 21. First end; 22. Second end; 23. Bottom surface

[0039] 3. Place the boss;

[0040] 4. Fold-over section; 41. Extension section;

[0041] E. Auxiliary line. Detailed Implementation

[0042] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0043] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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, they should not be construed as limitations on the embodiments of this application.

[0044] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0045] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0046] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] A steaming plate is a common kitchen tool. Its structure consists of a plate-shaped body and several through holes on the body. In a regular steamer, since the height of each steaming rack is fixed and not adjustable, the rack may be too high when steaming small items. This wastes space and makes it inconvenient to remove the food. By placing a steaming plate into the steaming rack, the space of the rack can be divided, making full use of the space.

[0048] When steaming foods like steamed buns using a steamer rack, users may place the food directly on the rack. Since steamers heat food using steam, the steam inevitably condenses upon contact with the rack, forming condensate. This condensate, trapped on the rack, comes into contact with the food, affecting its flavor. Although existing steaming racks have perforations to guide the condensate out, this is still insufficient when there is little condensation. Figure 5 Due to surface tension and the adhesive force between the condensate and the steaming plate, the condensate may not flow into the through-hole. Instead, it will bypass the through-hole and remain on the steaming plate along the direction of the arrow in the diagram. Only when a certain amount of condensate accumulates will its gravity overcome the aforementioned stress and allow it to flow out of the steaming plate through the through-hole. Therefore, it is evident that the existing steaming plate will accumulate a certain amount of condensate, making it difficult to overcome the problem of condensate affecting the taste of food.

[0049] Based on the above analysis, guiding the condensate flow to drain is a reasonable approach to solving the aforementioned problem. In one embodiment of this solution, to address the problem, on the one hand, the number of through-holes is increased, allowing the condensate to continue flowing to another through-hole after bypassing it, thus increasing the probability of condensate drainage; on the other hand, the diameter of some through-holes is reduced, decreasing the adhesion between the hole walls and the condensate, thereby allowing the condensate to drain from the steaming plate through the through-holes. Through these two improvements, the embodiment increases the probability of condensate draining from the steaming plate, thereby mitigating to some extent the problem of food being exposed to excessive condensate for extended periods, which negatively impacts the taste.

[0050] The structure of one specific embodiment can be referred to Figures 1-5 ,in Figure 1 This is a schematic diagram of the structure of the placement surface of the steam plate. The placement surface has several recessed guide channels 2 extending radially along the steam plate. These guide channels extend downwards at an angle from the first end 21 to the second end 22, allowing condensate to flow along the guide channels 2 to the second end 22. A first through hole 11 is provided on the steam plate near the second end 22. Multiple first through holes 11 are provided, with at least one first through hole 11 corresponding to the second end 22 of each guide channel 2. The first through hole 11 serves as an outlet for condensate, guiding it out of the steam plate. The steam plate also has several second through holes 12, located near the first through holes 11 and on the side of the first through holes 11 furthest from the second end 22. The diameter of the second through hole 12 is smaller than that of the first through hole 11.

[0051] Reference Figure 5When condensate flows around the first through-hole 11 in the direction of the arrow, the bypassed condensate flows towards the second through-hole 12. On one hand, the second through-hole 12 can guide the condensate out of the steaming plate's surface, increasing the probability of condensate draining from the steaming plate. On the other hand, the diameter of the second through-hole 12 is smaller than that of the first through-hole 11, therefore the contact area between the wall edge at the opening of the second through-hole 12 and the condensate is relatively smaller, resulting in a smaller adhesive force between them, which is more conducive to the condensate entering the second through-hole 12 and ultimately draining out. In summary, by providing the second through-hole 12, this embodiment helps increase the probability of condensate draining from the steaming plate's surface, thereby reducing the accumulation of condensate on the surface, reducing the impact of condensate on food, and ultimately improving the user experience.

[0052] The shapes of the first through hole 11 and the second through hole 12 in the design are not limited; they can be circular holes as shown in the figure, or polygonal or other shapes. Similarly, the shape of the flow guiding channel 2 is not limited; it can be as shown in the figure. Figure 1 The radially extending straight line shown can also be a curved line or other shapes; the inclination direction of the flow channel 2 can be radially inclined from the center of the steam plate to the edge of the steam plate, or vice versa, or inclined in other directions, without specific limitation here.

[0053] In this embodiment, the steam plate includes an upwardly extending extension 41 that surrounds the placement surface. A first through-hole 11 is located near the extension 41. (See reference...) Figure 1 and Figure 3 The extension 41 extends upward at an angle.

[0054] When condensate flows around the first through hole 11, it is blocked by the extension 41 and accumulates at the root of the extension 41. Since the first through hole 11 is close to the extension 41, when the condensate accumulates to a certain amount, it can be discharged from the placement surface along the first through hole 11, which helps to prevent a large amount of condensate from accumulating.

[0055] In some embodiments, reference is made to Figure 3 The second through hole 12 is provided on the extension 41, and the lower edge of the second through hole 12 extends to the position where the extension 41 intersects with the placement surface, so that the condensate water accumulated at the root of the extension 41 can directly enter the second through hole 12.

[0056] The extension 41 blocks condensate, causing it to accumulate at its root. This allows a certain amount of condensate to accumulate, facilitating its discharge through the first through-hole 11 and the surface. Furthermore, the accumulated condensate can also be discharged directly through the second through-hole 12. Since the second through-hole 12 is located within the extension 41 and is positioned approximately directly opposite the flow direction of the condensate, it also facilitates the flow of condensate into the second through-hole 12, further improving the condensate drainage effect.

[0057] The aforementioned extension 41 is located at the outer circumference of the steaming plate. The extension 41 can also serve as abutment between the steaming plate and the steamer, thereby positioning the steaming plate by abutting against the wall of the steamer. Of course, the extension 41 can also be located at other positions on the steaming plate. For example, when the guide channel 2 is sloping downwards from the edge of the steaming plate towards the center, the extension 41 can also be located near the center of the steaming plate, as long as the extension 41 is close to the first through hole 11.

[0058] Reference Figure 5 In some embodiments, at least two second through holes 12 are arranged next to any first through hole 11, and for an auxiliary straight line E that passes through both the center of the steam plate and the center of the first through hole 11, the two second through holes 12 are located on both sides of the auxiliary straight line E.

[0059] When the condensate flows around the first through hole 11, the direction of the condensate flow can be... Figure 5 The two arrows shown can point in either direction, allowing condensate to flow to either side of the auxiliary line E. When the second through-hole 12 is arranged as described above, at least one second through-hole 12 will be in contact with the condensate regardless of which side of the auxiliary line E the condensate flows to, thereby increasing the probability of condensate drainage.

[0060] Of course, in other embodiments, while ensuring the structural strength of the steam plate, a greater number of second through holes 12 can be provided, so that one first through hole 11 can correspond to more than two second through holes 12.

[0061] Reference Figure 3 The bottom surface 23 of the flow channel 2 is inclined. Specifically, when the steam plate is placed horizontally, the bottom surface 23 extends downwards and tilts from the right side to the left side as shown in the figure, and the first through hole 11 is located on the lower side of the bottom surface 23. The inclination angle of the flow channel 2 is α, α ≥ 1.5°, that is, the angle α between the bottom surface 23 and the horizontal plane is ≥ 1.5°.

[0062] After verification, when α≥1.5°, on the one hand, the gravity of the condensate can overcome the adhesion between it and the bottom surface 23 and thus flow along the guide channel 2; on the other hand, it can give the condensate a certain speed, which is conducive to the condensate flowing into the first through hole 11 and the second through hole 12.

[0063] Reference Figures 1-3 In some embodiments, the placement surface is further provided with a plurality of placement protrusions 3, which are arranged to bulge upward relative to the bottom surface 23 of the guide channel 2. The top surface of the placement protrusions 3 is flat to facilitate stable placement of food. The recessed guide channel 2 is recessed downward relative to the placement protrusions 3.

[0064] The protrusion 3 is placed to support the food, keeping it as far away as possible from the bottom surface 23 of the guide channel 2, thereby reducing the impact of condensation in the guide channel 2 on the food.

[0065] Furthermore, the mounting boss 3 is provided with several third through holes 13. The third through holes 13 serve as steam holes, allowing steam to directly contact the food on the mounting boss 3, thereby helping to improve heating efficiency. Moreover, the third through holes 13 can also serve as condensate return holes, allowing liquid seeping from the food and condensate generated in contact with the food to be quickly discharged from the steaming plate through the third through holes 13.

[0066] In this embodiment, the diameters of the third through holes 13 are different. Specifically, the diameter of the third through hole 13 near the center of the steam plate is smaller than that of the third through hole 13 away from the center of the steam plate, and along the radial direction of the steam plate, the diameter of the third through hole 13 increases sequentially from the center of the steam plate to the edge of the steam plate.

[0067] Based on the characteristics of steamers used in open flame environments, the center of the steamer receives more heat than the outer perimeter. Therefore, the amount and temperature of steam generated at the center of the steamer are higher than at the edges. By adjusting the size of the third through hole 13, more steam can pass through the third through hole 13 near the edge, which helps to disperse the high-temperature, high-density steam from the center to the edge, making the steam more evenly distributed and improving the heating efficiency of the steamer.

[0068] refer to Figure 1 In some embodiments, the upper surface of the boss 3 is flat, that is, the surface of the boss 3 with the third through hole 13 is configured as a flat surface. When the steaming plate is placed flat on a horizontal plane, the plane is horizontal, so that the food can be placed stably, which can alleviate the problem that a large area of ​​the food enters the guide channel 2 due to uneven placement, thereby reducing the probability of the food coming into contact with condensate.

[0069] Continue to refer to Figure 1The width of the guide channel 2 also gradually increases from the first end 21 to the second end 22, so as to minimize the influence of the wall of the guide channel 2 on the condensate as the condensate flows along the guide channel; the width of the plane on which the boss 3 is placed gradually increases from the first end 21 to the second end 22, so that the food can be placed stably near the edge.

[0070] refer to Figure 1 In some embodiments, a plurality of fourth through holes are provided on the steam plate near the center of the steam plate, and a fifth through hole is provided at the center of the steam plate.

[0071] Because the steam volume is larger at the center of the steamer, more condensation occurs there. This increased volume of condensation causes it to drip directly rather than flow down the side walls of the steamer. Therefore, a fourth through-hole 14 is provided at the center of the steaming plate to allow this condensation to flow out directly, accelerating drainage and alleviating condensation buildup. The fifth through-hole 15 in the center serves both as a drain hole and a finger hole, making it easier for the user to remove the steaming plate.

[0072] Furthermore, the wall of the fifth through hole 15 is flanged, forming a folded portion 4. For typical steaming plates, the plate thickness is relatively small, resulting in shallow through holes and sharp edges that can easily cut the hand. By flanged, the thickness of the steaming plate at the fifth through hole 15 is increased, forming a thicker folded portion 4. This allows a larger area of ​​the folded portion 4 to contact the finger when it is inserted into the fifth through hole 15, reducing the pressure exerted on the finger by the hole wall and alleviating the cutting sensation.

[0073] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0074] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0075] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A steaming sheet, provided with a placement surface for placing food, the placement surface being provided with a plurality of concave flow guide channels; characterized in that: a bottom surface of the flow guide channel extends downwardly from a first end to a second end; the placement surface is provided with a first through hole at a position close to the second end; the steaming sheet is provided with a second through hole; wherein the second through hole is close to the first through hole, and the second through hole is located on a side of the first through hole away from the second end, and the second through hole has a smaller aperture than the first through hole.

2. The vaporizing sheet according to claim 1, wherein The steaming sheet further comprises an extension extending upwardly relative to the placement surface, and the first through hole is close to the extension.

3. The vaporizing sheet according to claim 2, wherein The second through hole is provided on the extension, and the hole wall of the second through hole extends to the intersection of the extension and the placement surface.

4. The vaporizing sheet according to claim 1, wherein The inclination angle of the flow guide channel is greater than or equal to 1.5°.

5. The vaporization sheet according to claim 1, wherein At least two second through holes are provided corresponding to each first through hole; wherein, for an auxiliary straight line passing through the center of the steaming sheet and the center of the first through hole, the two second through holes are located on both sides of the auxiliary straight line.

6. The vaporization sheet according to claim 1, wherein The placement surface is further provided with a plurality of placement bosses, which protrude upwardly relative to the flow guide channels; wherein, the upper surface of the placement boss is configured as a plane.

7. The vaporizing sheet according to claim 6, wherein The placement boss is provided with a plurality of third through holes; wherein, in the radial direction of the steaming sheet from the center to the edge, the apertures of the plurality of third through holes increase in turn.

8. The vaporizing sheet according to claim 6, wherein The placement boss extends in the radial direction of the steaming sheet, and the recess between adjacent placement bosses forms the flow guide channel; wherein, in the direction from the first end to the second end, the depth of the flow guide channel gradually increases, the width of the flow guide channel gradually increases, and the width of the plane gradually increases.

9. The vaporizing sheet according to any one of claims 1 to 8, wherein The steaming sheet is provided with a plurality of fourth through holes close to the center of the steaming sheet, and the center of the steaming sheet is provided with a fifth through hole.

10. The vaporizing sheet according to claim 9, wherein The hole wall of the fifth through hole is folded to form a folded portion.

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