Steam cooking appliances
By introducing a superheated steam generator and a precise guiding structure into the steam cooking appliance, the problems of insufficient steam temperature and thermal shock are solved, resulting in a richer soup flavor and increased durability of the steam pot.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HONGYANG HOME APPLIANCES
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional steam cooking appliances often produce low-temperature steam, resulting in bland broths. Furthermore, the high-temperature steam causes significant thermal shock to the pot, increasing the risk of breakage.
A superheated steam generator is installed in the steam generation chamber. The design of the injection port and steam outlet ensures that the superheated steam enters the steam boiler smoothly. The guide structure reduces thermal shock, the positioning structure improves alignment accuracy, and the chamber cover prevents accidental water spillage and enhances sealing.
It enhances the richness of the broth, reduces the risk of thermal shock to the steam pot, and extends its service life.
Smart Images
Figure CN224420717U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of kitchen appliance technology, and more particularly to a steam cooking appliance. Background Technology
[0002] With the popularization of healthy eating concepts and the improvement of living standards, steaming and boiling have gradually become the mainstream cooking methods in many households, and steam cooking appliances have gradually become indispensable kitchen appliances in modern homes. Traditional steam cooking appliances generally use a water pot placed at the bottom of the steamer to continuously supply steam, which then enters the steamer through a central steam column located at the bottom. Finally, the steam condenses inside the steamer and flows into the food. After a long cooking time, the food is cooked and produces broth. However, traditional steam cooking appliances do not produce high-temperature steam, which means that the food in the steamer cannot release its various components effectively, resulting in a bland, not rich, and unpleasant-tasting broth.
[0003] To improve the taste of cooked food, patent CN106419514A discloses an electric heating steamer, including a base with a metal water-filled cavity, a raised heating element at the center of the base, an inner partition ring with an inner water inlet groove and an outer partition ring with an outer water inlet groove surrounding the raised heating element, and a recessed tray with a central hole on the top surface and a retaining ring on the bottom surface that can be placed on the outer shell of the base. The retaining ring of the tray covers the top of the outer partition ring. The steamer has a central air column leading to the outside of the pot bottom, and the bottom end of the central air column covers the central hole of the tray. In use, the raised heating element heats the water to boiling to generate steam. The rising steam is concentrated and ejected upwards through the central hole to the central air column of the steamer and enters the interior of the steamer. The high concentration of steam and the large amount of steam entering the steamer ensure that the food inside the steamer is cooked quickly and thoroughly, resulting in delicious and flavorful broth.
[0004] However, while this type of steam cooking appliance can generate a large amount of steam, the upper diameter of the central perforated column in the tray is relatively large, while the upper diameter of the central steam column in the pot is relatively small. This causes a large amount of steam to accumulate within the central steam column of the pot, impacting its inner wall. Since pots are generally made of ceramic or similar materials, their resistance to thermal shock is not high. If the steam temperature is high, the significant thermal shock may cause the pot to crack, especially when used in low ambient temperatures, increasing the risk of cracking and shortening its lifespan. Utility Model Content
[0005] To address the issues of poor soup taste due to insufficient steam temperature and the increased risk of steam pot breakage due to excessive thermal shock caused by increasing the temperature of the steam entering the pot, this application provides a steam cooking appliance.
[0006] This application provides a steam cooking appliance, including a base, a receiving plate, and a steam pot, wherein the steam pot is supported on the base by the receiving plate;
[0007] The base has a steam generating chamber and a first heating element. The first heating element is used to heat the liquid in the steam generating chamber to generate steam. The steam generating chamber is equipped with a superheated steam generator. The superheated steam generator is used to heat the steam generated in the steam generating chamber to generate superheated steam. The superheated steam generator has a steam channel for the superheated steam to be ejected. The upper port of the steam channel forms a spray nozzle.
[0008] The receiving plate is provided with a steam inlet corresponding to the injection port. The bottom of the steam pot is provided with a hollow column with a steam outlet. The steam outlet corresponds to and communicates with the injection port, and the vertical projection of the injection port on the steam pot falls within the area of the steam outlet.
[0009] In some embodiments, the inner wall of the steam passage extends vertically or gradually slopes and narrows in a direction from bottom to top toward the nozzle.
[0010] In some embodiments, the column extends upward from the bottom of the steam boiler, and the side wall of the column forms a hollow channel. The upper end of the hollow channel forms the steam outlet, and the inner wall of the hollow channel gradually slopes and narrows in the direction from bottom to top toward the steam outlet.
[0011] In some embodiments, along an upward direction, the inner wall of the steam passage gradually slopes and converges to form a conical steam passage, and the inner wall of the hollow passage gradually slopes and converges to form a conical hollow passage, and the cone angle of the conical steam passage is less than or equal to the cone angle of the conical hollow passage.
[0012] In some embodiments, the superheated steam generator includes a generator body and a first sealing ring;
[0013] The generator body has a connected steam inlet and a superheated steam outlet. The first sealing ring is located at the superheated steam outlet and is connected to the steam outlet of the receiving plate. The first sealing ring forms the steam channel.
[0014] In some embodiments, the generator body includes an outer casing, a flow guide, and a second heating element;
[0015] The outer casing divides the steam generating chamber into an evaporation chamber located outside the outer casing and a superheated chamber located inside the outer casing. The second heating element and the flow guide are both located inside the superheated chamber, and the flow guide is located between the second heating element and the outer casing to divide the superheated chamber into a steam inlet channel and a steam outlet channel. The steam inlet and the superheated steam outlet are both located on the outer casing, and the steam inlet is connected to the steam inlet channel, and the superheated steam outlet is connected to the steam outlet channel.
[0016] In some embodiments, the receiving plate is provided with a positioning part, and the bottom of the steam pot is provided with a positioning mating part, the positioning part and the positioning mating part cooperating to form radial positioning.
[0017] In some embodiments, the positioning part is a second sealing ring disposed on the receiving plate, the second sealing ring being disposed around the steam inlet;
[0018] The positioning and fitting part is an annular rib provided at the bottom of the steam pot. The annular rib is located outside the second sealing ring and cooperates with the second sealing ring to form radial positioning.
[0019] In some embodiments, the steam cooking appliance further includes a cavity cover, which covers the top of the steam generating cavity, and the cavity cover has a steam outlet.
[0020] In some embodiments, at least a region on the cavity cover corresponding to the superheated steam generator is hollowed out to form the steam outlet;
[0021] And / or, a handle is formed at the edge of the steam inlet.
[0022] In some embodiments, the base has a water storage chamber located around the steam generating chamber, a partition rib is provided between the water storage chamber and the steam generating chamber, a third sealing ring is provided on the top of the partition rib, and the periphery of the chamber cover is supported on the third sealing ring and forms a seal with the third sealing ring.
[0023] The technical solution provided in this application has at least the following advantages compared with the prior art:
[0024] 1. The steam cooking appliance provided in this application, by setting a superheated steam generator in the steam generation chamber, heats the steam generated in the steam generation chamber to form superheated steam. The superheated steam enters the steam pot through the steam outlet on the column of the steam pot, thereby achieving high-temperature cooking of the food in the steam pot. This allows the food in the steam pot to better release its various components, resulting in a richer broth and better taste. Furthermore, by setting the vertical projection of the superheated steam generator's nozzle on the steam pot to fall within the area of the steam outlet, it is ensured that the superheated steam ejected from the nozzle smoothly enters the steam pot through the steam outlet, reducing the contact between the superheated steam and the column of the steam pot during the ejection process. This reduces the thermal shock to the steam pot, thereby reducing the risk of breakage caused by thermal shock and ensuring the service life of the steam pot.
[0025] 2. By setting the inner wall of the steam channel to gradually slope and converge from bottom to top towards the injection port, the inner wall of the steam channel acts as a convergence and guide for the superheated steam as it is ejected through the steam channel. This allows the superheated steam to be ejected from the upper injection port of the steam channel in a relatively converged state towards the steam outlet on the column of the steam boiler, thereby reducing the contact between the superheated steam and the column of the steam boiler during the ejection process and thus reducing the thermal shock to the steam boiler.
[0026] 3. By setting the inner wall of the hollow channel formed by the columns to gradually slope and narrow from bottom to top towards the steam outlet, the diameter of the lower end of the hollow channel is relatively large, while the diameter of the upper steam outlet is relatively small. This ensures that the superheated steam can smoothly enter the hollow channel formed by the columns after being ejected from the injection port, and then enter the steam boiler through the upper steam outlet of the columns. In addition, since the diameter of the upper steam outlet is smaller than that of the lower end, ensuring that the diameter of the steam outlet is greater than or equal to the diameter of the injection port can effectively reduce the contact between the superheated steam and the columns of the steam boiler.
[0027] 4. By setting the cone angle of the conical steam channel to be less than or equal to the cone angle of the conical hollow channel, that is, the cone angle of the conical steam channel should not be too large, the inner wall of the conical steam channel can be used to gather and guide the superheated steam, thereby effectively reducing the contact between the superheated steam and the column, while ensuring that the superheated steam can be smoothly discharged through the steam channel, and after discharge, it will not be excessively gathered, thus affecting the further discharge of the superheated steam through the steam outlet of the column.
[0028] 5. By providing a positioning part on the receiving plate and a positioning mating part at the bottom of the steam boiler, when the steam boiler is placed on the receiving plate, the positioning part and the positioning mating part cooperate to form radial positioning, thereby ensuring that the steam outlet on the steam boiler and the injection port on the superheated steam generator have good alignment accuracy, thus ensuring that the superheated steam smoothly enters the steam boiler through the injection port and the steam outlet.
[0029] 6. By covering the top of the steam generating chamber with a chamber cover, the top opening of the steam generating chamber is partially blocked, which informs users that water should be poured into the water storage chamber, not into the steam generating chamber or onto the superheated steam generator, thereby reducing the probability of accidental pouring. Accidental pouring will affect the steam generation rate and the superheated steam generation rate. At the same time, in order to ensure that the steam generated in the steam generating chamber can smoothly enter the superheated steam generator and that the generated superheated steam can be smoothly ejected, a steam outlet is provided on the chamber cover.
[0030] 7. The cavity cover is provided with a handle to facilitate user removal; the cavity cover is supported on the periphery of the cavity cover by a third sealing ring at the top of the partition rib, and a seal is formed with the third sealing ring. In this way, the cavity cover is installed on the top of the partition rib by the third sealing ring, and steam generated in the steam generation chamber is prevented from overflowing from the gap between the cavity cover and the partition rib. Attached Figure Description
[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of the structure of the steam cooking appliance provided in the embodiments of this application;
[0034] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the steam cooking appliance shown.
[0035] Figure 3 for Figure 1 A cross-sectional view of the steam cooking appliance shown.
[0036] Figure 4 for Figure 3 A partially enlarged structural diagram of section A in the middle;
[0037] Figure 5 for Figure 1 A cross-sectional view of the steam cooking appliance shown.
[0038] Figure 6 for Figure 5 A magnified schematic diagram of a portion of section B in the middle;
[0039] Figure 7 for Figure 2 A schematic diagram of the assembly structure of the base and cavity cover shown;
[0040] Figure 8 for Figure 7 A schematic diagram of the exploded structure of the base and cavity cover shown;
[0041] Figure 9 for Figure 8 The diagram shows the structure of the cavity cover;
[0042] Figure 10 for Figure 8 The diagram shows the structure of the third sealing ring.
[0043] The components are as follows: 1. Base; 11. Water storage chamber; 12. Steam generating chamber; 121. Evaporation chamber; 122. Superheated chamber; 1221. Steam inlet passage; 1222. Steam outlet passage; 13. First heating element; 14. Superheated steam generator; 141. Generator body; 1411. Steam inlet; 1412. Superheated steam outlet; 142. First sealing ring; 1421. Steam passage; 1422. Injection nozzle; 143. Outer casing; 144. Flow guide; 145. Second heating element; 15. Separating rib; 16. Third sealing ring; 161. Extension rib.
[0044] 2. Receiving tray; 21. Steam inlet; 22. Second sealing ring;
[0045] 3. Steam boiler; 31. Column; 311. Steam outlet; 312. Hollow channel; 32. Annular rib;
[0046] 4. Cavity cover; 41. Steam inlet; 42. Handle position; 43. Overlap edge;
[0047] 5. Pot lid. Detailed Implementation
[0048] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0049] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.
[0050] Reference Figure 1 and Figure 2 As shown, some embodiments of this application provide a steam cooking appliance, including a base 1, a receiving plate 2, and a steam pot 3, with the steam pot 3 supported on the base 1 by the receiving plate 2. Specifically, the receiving plate 2 is placed on the base 1, and the steam pot 3 is placed on and supported by the receiving plate 2. In addition, the steam cooking appliance may also include a lid 5, which covers the steam pot 3.
[0051] Among them, reference Figure 2 and Figure 3 As shown, the base 1 has a steam generating chamber 12, and a first heating element 13 is provided on the base 1. The first heating element 13 is used to heat the liquid in the steam generating chamber 12 to generate steam. A superheated steam generator 14 is provided in the steam generating chamber 12. The superheated steam generator 14 is used to heat the steam generated in the steam generating chamber 12 to generate superheated steam. The superheated steam generator 14 has a steam channel 1421 for superheated steam to be ejected. The upper port of the steam channel 1421 forms an injection port 1422. The receiving plate 2 is provided with a steam outlet 21 corresponding to the injection port 1422. The bottom of the steam boiler 3 is provided with a hollow column 31. The column 31 has a steam outlet 311, which corresponds to and communicates with the injection port 1422.
[0052] Reference Figure 3 As shown in the diagram, the curved arrows indicate the flow path of fluid in a steam cooking appliance.
[0053] This configuration allows the first heating element 13 to heat the liquid (e.g., water) in the steam generating chamber 12 to generate steam. Then, the superheated steam generator 14 heats the steam generated in the steam generating chamber 12 to generate superheated steam. The superheated steam is ejected through the nozzle 1422 of the hot steam generator 14 and then enters the steam pot 3 through the steam outlet 311 on the column 31 of the steam pot 3. This allows for high-temperature cooking of the ingredients in the steam pot 3, which enables the ingredients in the steam pot 3 to better release their various components, resulting in a richer broth and better taste.
[0054] To improve heating efficiency, refer to Figure 2 and Figure 3As shown, the base 1 also has a water storage chamber 11 located around the steam generating chamber 12. The water storage chamber 11 and the steam generating chamber 12 are separated by a partition rib 15. The liquid in the water storage chamber 11 can flow into the steam generating chamber 12. The first heating element 13 can be set in the area corresponding to the steam generating chamber 12 so as to use the first heating element 13 to quickly heat the liquid (e.g., water) in the steam generating chamber 12.
[0055] Specifically, a connecting hole can be provided between the water storage chamber 11 and the steam generating chamber 12 to allow the liquid in the water storage chamber 11 to flow into the steam generating chamber 12. Alternatively, a water pump can be provided to pump the liquid in the water storage chamber 11 into the steam generating chamber 12. The goal is to ensure that the liquid in the water storage chamber 11 is replenished to the steam generating chamber 12 in a timely manner to avoid the problem of dry burning.
[0056] Among them, reference Figure 3 and Figure 4 As shown, the vertical projection of the injection nozzle 1422 onto the steam boiler 3 falls within the area of the steam outlet 311. Or, in other words, the vertical downward projection of the injection nozzle 1422 falls within the area of the vertical downward projection of the steam outlet 311.
[0057] This configuration ensures that the superheated steam ejected through the nozzle 1422 smoothly enters the steam boiler 3 through the steam outlet 311, reducing the contact between the superheated steam and the column 31 of the steam boiler 3 during the ejection process. This reduces the thermal shock to the steam boiler 3, thereby reducing the risk of cracking caused by thermal shock and ensuring the service life of the steam boiler 3.
[0058] Specifically, the steam pot 3 is generally made of ceramic or other materials, which have low resistance to thermal shock. Before use, the steam pot 3 is at a low temperature. When the steam cooking appliance is turned on to heat the steam pot 3, the temperature of the steam will rise rapidly due to the heating effect of the superheated steam generator 14, forming superheated steam. If the superheated steam comes into contact with the steam pot 3 more during the process of entering the steam pot 3 through the column 31, the low-temperature steam pot 3 will be simultaneously impacted by the superheated steam in a short period of time. This thermal shock to the steam pot 3 can easily lead to the risk of cracking. Especially when the steam cooking appliance is used in a low ambient temperature, this thermal shock to the steam pot 3 is even greater, which will increase the risk of cracking and affect the service life of the steam pot 3.
[0059] The steam cooking appliance provided in this application embodiment, by setting the vertical projection of the spray nozzle 1422 on the steam pot 3 to fall within the area of the steam outlet 311, that is, by appropriately increasing the size of the steam outlet 311 on the steam pot 3, or appropriately decreasing the size of the spray nozzle 1422 on the superheated steam generator 14, reduces the contact between the superheated steam and the column 31 of the steam pot 3 during the spraying process, thereby reducing the thermal shock to the steam pot 3, and thus reducing the risk of breakage caused by thermal shock, thereby ensuring the service life of the steam pot 3.
[0060] In practical implementation, to ensure that the vertical projection of the injection nozzle 1422 on the steam boiler 3 falls within the area of the steam outlet 311, the diameter of the steam outlet 311 can be set to be greater than or equal to the diameter of the injection nozzle 1422. (Refer to...) Figure 3 and Figure 4 As shown in the figure, D1 represents the diameter of the steam outlet 311, and D2 represents the diameter of the injection outlet 1422, and D1 is greater than or equal to D2.
[0061] To more effectively reduce the contact between superheated steam and the column 31 of the steam boiler 3 during the ejection process, in some embodiments, refer to Figure 3 and Figure 4 As shown, along the direction from bottom to top towards the nozzle 1422, the inner wall of the steam passage 1421 gradually slopes and narrows. That is to say, along the direction from bottom to top towards the nozzle 1422, the flow area of the steam passage 1421 gradually decreases, forming a narrowing design.
[0062] This design allows the inner wall of the steam channel 1421 to converge and guide the superheated steam as it is ejected through the steam channel 1421. This results in the superheated steam being ejected through the upper nozzle 1422 of the steam channel 1421 and then sprayed in a relatively converged manner toward the steam outlet 311 formed on the column 31 of the steam boiler 3. This reduces the contact between the superheated steam and the column 31 of the steam boiler 3 during the ejection process, thereby reducing the thermal shock to the steam boiler 3.
[0063] In a specific implementation, the central axis of the steam passage 1421 can extend vertically, and the inner wall surface of the steam passage 1421 can be a conical surface. Along the direction from bottom to top towards the injection port 1422, the inner wall surface of the steam passage 1421 gradually slopes and converges towards the central axis of the steam passage 1421. Of course, the inner wall surface of the steam passage 1421 is not limited to a conical surface; it can also be other structures that can create a tapering trend, such as an arc surface or a stepped surface.
[0064] Of course, since the vertical projection of the nozzle 1422 onto the steam boiler 3 falls within the area of the steam outlet 311, the inner wall of the steam passage 1421 is not limited to being inclined and narrowed. In other embodiments, the inner wall of the steam passage 1421 extends vertically along the direction from bottom to top toward the nozzle 1422; that is, the steam passage 1421 is formed as a cylindrical steam passage 1421 with a constant flow area. Since the vertical projection of the nozzle 1422 onto the steam boiler 3 falls within the area of the steam outlet 311, setting the steam passage 1421 as a cylindrical steam passage 1421 can also reduce the contact between superheated steam and the column 31 of the steam boiler 3 during the ejection process.
[0065] In some embodiments, refer to Figure 2 , Figure 3 and Figure 4 As shown, the column 31 extends upward from the bottom of the steam boiler 3, and the side wall of the column 31 forms a hollow channel 312. The upper end of the hollow channel 312 forms a steam outlet 311, and the inner wall of the hollow channel 312 gradually slopes and narrows along the direction from bottom to top towards the steam outlet 311. That is to say, along the direction from bottom to top towards the steam outlet 311, the flow area of the hollow channel 312 gradually decreases, and it is set in a narrowing manner.
[0066] This configuration ensures that the lower port of the hollow channel 312 has a relatively large diameter, while the upper steam outlet 311 has a relatively small diameter. This ensures that after the superheated steam is ejected from the injection port 1422, it can smoothly enter the hollow channel 312 through the lower port and then enter the steam pot 3 through the upper steam outlet 311, so as to use the superheated steam to heat the food in the steam pot 3.
[0067] In addition, it should be noted that since the diameter of the upper steam outlet 311 is smaller than that of the lower outlet, ensuring that the diameter of the steam outlet 311 is greater than or equal to the diameter of the injection port 1422 can effectively reduce the contact between the superheated steam and the column 31 during the injection process.
[0068] In some embodiments, refer to Figure 3 and Figure 4 As shown, along the upward direction, the inner wall of the steam passage 1421 gradually slopes and converges to form a conical steam passage, and the inner wall of the hollow passage 312 gradually slopes and converges to form a conical hollow passage. The cone angle of the conical steam passage is less than or equal to the cone angle of the conical hollow passage. In other words, the inclination angle of the inner wall of the conical steam passage is less than or equal to the inclination angle of the inner wall of the conical hollow passage; that is, the cone angle or inclination angle of the conical steam passage should not be too large.
[0069] This configuration allows the inner wall of the conical steam channel to gather and guide the superheated steam, effectively reducing the contact between the superheated steam and the column 31. At the same time, it ensures that the superheated steam can be smoothly discharged through the conical steam channel, and after discharge, it will not be excessively gathered, thus affecting the further discharge of the superheated steam through the steam outlet 311 of the column 31.
[0070] In some embodiments, refer to Figure 5 and Figure 6 As shown, the superheated steam generator 14 includes a generator body 141 and a first sealing ring 142; wherein, the generator body 141 has a connected steam inlet 1411 and a superheated steam outlet 1412, the first sealing ring 142 is disposed at the superheated steam outlet 1412 and is connected to the steam inlet 21 of the receiving plate 2, the first sealing ring 142 surrounds to form a steam channel 1421, and the upper port of the steam channel 1421 forms an injection port 1422.
[0071] This configuration allows the first sealing ring 142 to achieve a sealed connection between the superheated steam outlet 1412 and the steam inlet 21 of the receiving plate 2, thereby ensuring that the superheated steam generated by the superheated steam generator 14 passes more smoothly through the steam inlet 21 and enters the steam boiler 3 through the steam outlet 311 of the column 31 of the steam boiler 3, thus preventing the superheated steam generated by the superheated steam generator 14 from overflowing and affecting the heating efficiency.
[0072] To achieve a sealed connection between the receiving plate 2 and the first sealing ring 142, refer to... Figure 6 As shown, the steam inlet 21 of the receiving plate 2 has a downwardly bent flange at its edge, and the top of the first sealing ring 142 has an annular slot. When the receiving plate 2 is placed on the base 1, the flange of the receiving plate 2 is inserted into the annular slot at the top of the first sealing ring 142, and the top of the outer wall of the annular slot abuts against the bottom surface of the receiving plate 2 to form a seal.
[0073] In some embodiments, refer to Figure 5 and Figure 6 As shown, the generator body 141 includes an outer casing 143, a flow guide 144, and a second heating element 145. The outer casing 143 divides the steam generating chamber 12 into an evaporation chamber 121 located outside the outer casing 143 and a superheated chamber 122 located inside the outer casing 143. The second heating element 145 and the flow guide 144 are both located inside the superheated chamber 122, and the flow guide 144 is located between the second heating element 145 and the outer casing 143 to divide the superheated chamber 122 into a steam inlet channel 1221 and a steam outlet channel 1222. The steam inlet 1411 and the superheated steam outlet 1412 are both located on the outer casing 143, and the steam inlet 1411 is connected to the steam inlet channel 1221, and the superheated steam outlet 1412 is connected to the steam outlet channel 1222.
[0074] Reference Figure 5 As shown in the diagram, the curved arrows indicate the flow path of fluid in a steam cooking appliance.
[0075] This configuration ensures that the steam generated in the evaporation chamber 121, after entering through the steam inlet 1411, flows along the steam inlet channel 1221, the steam outlet channel 1222, and the superheated steam outlet 1412. During this flow, it is heated by the second heating element 145 to form superheated steam, which is then ejected from the superheated steam generator 14 through the injection port 1422. This configuration ensures that the steam flows along a predetermined path within the superheated steam generator 14, thereby improving the heating efficiency of the steam and ensuring that the steam ejected from the injection port 1422 is all superheated steam.
[0076] In some embodiments, refer to Figure 3 As shown, the receiving plate 2 is provided with a positioning part, and the bottom of the steam pot 3 is provided with a positioning mating part. The positioning part and the positioning mating part cooperate to form radial positioning.
[0077] With this configuration, when the steam boiler 3 is placed on the receiving plate 2, the positioning part and the positioning mating part cooperate to form radial positioning, thereby ensuring that the steam outlet 311 on the steam boiler 3 and the injection port 1422 on the superheated steam generator 14 have good alignment accuracy, thereby ensuring that the superheated steam smoothly enters the steam boiler 3 through the injection port 1422 and the steam outlet 311.
[0078] It should be understood that, in order to prevent superheated steam ejected from the nozzle 1422 from overflowing from the bottom of the steam boiler 3 to areas other than the column 31, a second sealing ring 22 is provided on the receiving plate 2. The second sealing ring 22 is located in the outer area of the steam inlet 21 and surrounds the steam inlet 21. When the steam boiler 3 is placed on the receiving plate 2, the second sealing ring 22 abuts against the bottom surface of the steam boiler 3 to form a seal.
[0079] In practical implementation, the second sealing ring 22 can be used for positioning. For example, refer to... Figure 3 As shown, the positioning part is a second sealing ring 22 provided on the receiving plate 2, and the second sealing ring 22 is arranged around the steam inlet 21; the positioning mating part is an annular rib 32 provided on the bottom of the steam pot 3. When the steam pot 3 is placed on the receiving plate 2, the annular rib 32 is located outside the second sealing ring 22 and cooperates with the second sealing ring 22 to form radial positioning.
[0080] Specifically, the inner wall of the annular rib 32 can be set to abut against the outer wall of the second sealing ring 22 to form radial positioning. This arrangement improves positioning accuracy, thereby restricting the radial movement of the steam boiler 3 relative to the receiving plate 2 by utilizing the cooperation between the annular rib 32 and the second sealing ring 22. This ensures high alignment accuracy between the steam outlet 311 on the steam boiler 3 and the injection port 1422 on the superheated steam generator 14. Of course, in specific implementations, the inner wall of the annular rib 32 and the outer wall of the second sealing ring 22 are not limited to abutting; a small gap between them can also be allowed to facilitate the smooth placement of the steam boiler 3 on the receiving plate 2.
[0081] Furthermore, in specific implementations, radial positioning is not limited to the cooperation between the annular rib 32 and the second sealing ring 22. For example, multiple arc-shaped ribs spaced circumferentially on the bottom surface of the steam pot 3, located on the same circumference, can be provided. When the steam pot 3 is placed on the receiving plate 2, the multiple arc-shaped ribs are located around the second sealing ring 22 and cooperate with it to form radial positioning. Alternatively, a first rib can be provided on the bottom surface of the steam pot 3, and a first slot corresponding to the first rib can be provided on the receiving plate 2. The first rib is inserted into the first slot to form radial positioning.
[0082] In some embodiments, refer to Figure 7 , Figure 8 and Figure 9 As shown, the steam cooking appliance also includes a cavity cover 4, which covers the top of the steam generating cavity 12, and the cavity cover 4 has a steam outlet 41.
[0083] This design partially obstructs the top opening of the steam generating chamber 12 using the chamber cover 4, informing the user that water should be poured into the water storage chamber 11, rather than into the steam generating chamber 12 or the superheated steam generator 14, thereby reducing the probability of accidental pouring. Accidental pouring will affect the steam generation rate and the superheated steam generation rate. At the same time, in order to ensure that the steam generated in the steam generating chamber 12 can smoothly enter the superheated steam generator 14 and that the generated superheated steam can be smoothly ejected, an overflow port 41 is provided on the chamber cover 4.
[0084] In some embodiments, refer to Figure 7 and Figure 8 As shown, at least the area on the cavity cover 4 corresponding to the superheated steam generator 14 is hollowed out to form a steam outlet 41. This arrangement allows the injection port 1422 on the superheated steam generator 14 to be exposed to the outside through the steam outlet 41 and to mate with the steam outlet 21 on the receiving plate 2, thereby realizing the docking installation of the receiving plate 2 and the superheated steam generator 14, and allowing the superheated steam generated by the superheated steam generator 14 to be ejected through the injection port 1422.
[0085] In addition, in order to ensure that the steam generated in the steam generation chamber 12 located on the periphery of the superheated steam generator 14 can smoothly enter the superheated steam generator 14, the area of the steam passage 41 formed by the hollowing out on the chamber cover 4 can be set to be larger than the area of the superheated steam generator 14, so as to form a flow gap for steam to flow between the outer wall of the superheated steam generator 14 and the edge of the steam passage 41, so that the steam generated in the steam generation chamber 12 can smoothly enter the superheated steam generator 14 through the flow gap.
[0086] In some embodiments, refer to Figure 8 and Figure 9 As shown, a handle 42 is formed at the edge of the steam inlet 41 to facilitate the user to remove the cavity cover 4.
[0087] Specifically, the handle position 42 can be a recess formed at the edge of the steam inlet 41, that is, along the direction from the center of the cavity cover 4 towards the outer periphery of the cavity cover 4, the edge of the steam inlet 41 is recessed to form the handle position 42. The gap width formed between the edge of the steam inlet 41 at the handle position 42 and the outer wall of the superheated steam generator 14 is relatively large, so that the user can easily insert his / her fingers to remove the cavity cover 4.
[0088] In practice, there can be two handle positions 42, which are arranged radially opposite to each other along the cavity cover 4. Of course, there can also be one handle position 42 or other numbers.
[0089] In some embodiments, refer to Figure 7 , Figure 8 and Figure 10 As shown, the base 1 has a water storage chamber 11 located around the steam generating chamber 12. A partition rib 15 is provided between the water storage chamber 11 and the steam generating chamber 12. A third sealing ring 16 is provided on the top of the partition rib 15.
[0090] When the receiving plate 2 is placed on the base 1, the third sealing ring 16 can abut against the bottom surface of the receiving plate 2 to form a seal, thereby preventing the steam generated in the steam generating chamber 12 from overflowing into the outer water storage chamber 11, and thus allowing more steam to enter the steam pot 3 through the steam outlet 311, so as to achieve the purpose of rapidly heating the food in the steam pot 3.
[0091] Reference Figure 7 and Figure 8 As shown, the periphery of the cavity cover 4 is supported on the third sealing ring 16 and forms a seal with the third sealing ring 16.
[0092] This configuration allows the third sealing ring 16 to be used to install the chamber cover 4 on top of the partition rib 15, and prevents the steam generated in the steam generating chamber 12 from overflowing from the gap between the chamber cover 4 and the partition rib 15. This allows the steam generated in the steam generating chamber 12 to enter the superheated steam generator 14 more effectively through the steam outlet 41 on the chamber cover 4, thereby improving the superheated steam generation efficiency.
[0093] For example, refer to Figure 9 and Figure 10 As shown, the inner wall of the third sealing ring 16 is provided with an extension rib 161 extending toward the inner periphery of the third sealing ring 16. The periphery of the cavity cover 4 has an outer wall and an overlapping edge 43 that is connected to the upper end of the outer wall and extends outward. The overlapping edge 43 is supported on the top of the third sealing ring 16. The outer wall of the cavity cover 4 abuts against the extension rib 161 of the third sealing ring 16 to form a seal.
[0094] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0095] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A steam cooking appliance, comprising a base, a receiving plate, and a steam pot, wherein the steam pot is supported on the base by the receiving plate, characterized in that, The base has a steam generating chamber and a first heating element. The first heating element is used to heat the liquid in the steam generating chamber to generate steam. The steam generating chamber is equipped with a superheated steam generator. The superheated steam generator is used to heat the steam generated in the steam generating chamber to generate superheated steam. The superheated steam generator has a steam channel for the superheated steam to be ejected. The upper port of the steam channel forms a spray nozzle. The receiving plate is provided with a steam inlet corresponding to the injection port. The bottom of the steam pot is provided with a hollow column with a steam outlet. The steam outlet corresponds to and communicates with the injection port, and the vertical projection of the injection port on the steam pot falls within the area of the steam outlet.
2. The steam cooking appliance of claim 1, wherein, Along the direction from bottom to top toward the injection port, the inner wall of the steam passage extends vertically or gradually slopes and narrows.
3. The steam cooking appliance of claim 1, wherein, The column extends upward from the bottom of the steam boiler, and the side wall of the column forms a hollow channel. The upper end of the hollow channel forms the steam outlet, and the inner wall of the hollow channel gradually slopes and narrows from bottom to top towards the steam outlet.
4. The steam cooking appliance of claim 3, wherein, Along the upward direction, the inner wall of the steam channel gradually slopes and converges to form a conical steam channel, and the inner wall of the hollow channel gradually slopes and converges to form a conical hollow channel, and the cone angle of the conical steam channel is less than or equal to the cone angle of the conical hollow channel.
5. The steam cooking appliance of claim 1, wherein, The superheated steam generator includes a generator body and a first sealing ring; The generator body has a connected steam inlet and a superheated steam outlet. The first sealing ring is located at the superheated steam outlet and is connected to the steam outlet of the receiving plate. The first sealing ring forms the steam channel.
6. The steam cooking appliance of claim 5, wherein, The generator body includes an outer casing, a flow guide, and a second heating element; The outer casing divides the steam generating chamber into an evaporation chamber located outside the outer casing and a superheated chamber located inside the outer casing. The second heating element and the flow guide are both located inside the superheated chamber, and the flow guide is located between the second heating element and the outer casing to divide the superheated chamber into a steam inlet channel and a steam outlet channel. The steam inlet and the superheated steam outlet are both located on the outer casing, and the steam inlet is connected to the steam inlet channel, and the superheated steam outlet is connected to the steam outlet channel.
7. The steam cooking appliance of claim 1, wherein, The receiving plate is provided with a positioning part, and the bottom of the steam pot is provided with a positioning mating part. The positioning part and the positioning mating part cooperate to form radial positioning.
8. The steam cooking appliance according to claim 7, characterized in that, The positioning part is a second sealing ring disposed on the receiving plate, and the second sealing ring is arranged around the steam inlet; The positioning and fitting part is an annular rib provided at the bottom of the steam pot. The annular rib is located outside the second sealing ring and cooperates with the second sealing ring to form radial positioning.
9. The steam cooking appliance according to any one of claims 1 to 8, characterized in that, The steam cooking appliance also includes a cavity cover, which is placed on top of the steam generating cavity, and the cavity cover has a steam outlet.
10. The steam cooking appliance according to claim 9, characterized in that, The cavity cover has at least one area corresponding to the superheated steam generator cut out to form the steam outlet; And / or, a handle is formed at the edge of the steam inlet; And / or, the base has a water storage chamber located around the steam generating chamber, a partition rib is provided between the water storage chamber and the steam generating chamber, a third sealing ring is provided on the top of the partition rib, and the periphery of the chamber cover is supported on the third sealing ring and forms a seal with the third sealing ring.