High-temperature steam cooking utensil

Abstract

The utility model discloses a high-temperature steam cooking utensil which comprises a cooking cavity and a water storage cavity, an overheating cover and an isolation piece are arranged in the water storage cavity so as to divide the water storage cavity into a first heating cavity located on the outer side of the isolation piece and a second heating cavity located in the isolation piece, a first heating piece is arranged in the first heating cavity, and a second heating piece is arranged in the second heating cavity. A second heating piece is arranged in the overheating cover, a steam inlet and an opening are formed in the isolation piece, the overheating cover comprises a heat conduction part and a steam exhaust part, the steam exhaust part extends out of the opening and is provided with a steam outlet, a first cavity is defined by the heat conduction part, a second cavity is defined by the steam exhaust part, and the equivalent diameter of the first cavity is larger than that of the second cavity. In the process that the superheated steam flows from bottom to top, the channel becomes narrow from wide, the air pressure is gradually increased, and finally the superheated steam is discharged into the cooking cavity from the steam outlet with large pressure. Therefore, the food can quickly flow to the upper layer of the cooking cavity, the heating uniformity of the food on each layer in the cooking cavity is ensured, and the cooking taste and the use experience are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a high-temperature steam cooking appliance. Background Art

[0002] The liquid in a saturated state is called a saturated liquid, and its corresponding steam is saturated steam, but it is only wet saturated steam at first, and it becomes dry saturated steam only after the water in the saturated water evaporates completely. The temperature of steam does not increase during the process from unsaturated to wet saturated to dry saturated (the temperature remains unchanged from wet saturated to dry saturated). If dry saturated steam continues to be heated under constant pressure, the temperature will rise and become superheated steam. Superheated steam has the characteristics of strong penetration and high baking heating efficiency when heating food, so it is increasingly used in the field of home appliances, especially in steam cooking utensils. Compared with the traditional method of using saturated steam to heat food, the cooking efficiency of superheated steam heating is higher and the cooking time is shorter.

[0003] Cooking utensils that use superheated steam for heating are equipped with a water barrier and a heating hood in the water tank. The water barrier is arranged outside the heating hood, thereby dividing the internal space of the water tank into two cavities. The liquid in the water tank is first heated in the cavity outside the water barrier to produce wet saturated steam, and then enters the water barrier through the air inlet on the water barrier, and then enters the internal space of the heating hood. The wet saturated steam is heated again inside the heating hood to form superheated steam, and then enters the cooking cavity through the exhaust port on the water barrier to heat the food.

[0004] However, the heating hood is located inside the water-proof hood. When the user adds water to the water tank, the exhaust port of the water-proof hood is exposed to the outside. Therefore, during the water-adding process, some water is added into the heating hood through the exhaust port. As a result, during the cooking process, the heating device inside the heating hood directly heats the water to boiling, and the wet saturated steam generated enters the cooking cavity directly without forming superheated steam. This affects the generation of superheated steam and the heating efficiency, and the violent boiling of the water in the heating hood will produce a lot of noise, affecting the user experience.

[0005] In addition, in order to increase the contact time between the wet saturated steam and the heating device inside the heating hood, the air flow path inside the heating hood is usually set to be more tortuous, resulting in lower flow rate and pressure when the superheated steam is discharged into the cooking cavity, and more of it is concentrated in the lower part of the cooking cavity, causing uneven heating of the upper and lower layers of food in the cooking cavity, and a large difference in taste, which affects the overall cooking effect. Utility Model Content

[0006] The utility model provides a high-temperature steam cooking appliance to solve the problem that when a user adds water to a water tank, water is easily added into a heating cover by mistake, and the discharge pressure of superheated steam is low during cooking, so that upper and lower layers of food are heated unevenly.

[0007] The technical solution adopted by the utility model is:

[0008] A high-temperature steam cooking appliance comprises a cooking cavity and a water storage cavity located below the cooking cavity, wherein an overheating hood and an isolating member arranged outside the overheating hood are arranged in the water storage cavity, so as to divide the water storage cavity into a first heating cavity located outside the isolating member and a second heating cavity located inside the isolating member, wherein a first heating member is arranged in the first heating cavity, and a second heating member is arranged in the overheating hood, and the isolating member is provided with a steam inlet and an opening, and the overheating hood comprises a heat conducting portion and a steam exhaust portion located above the heat conducting portion, the steam exhaust portion extends from the opening and is provided with a steam outlet, the heat conducting portion encloses a first cavity, and the steam exhaust portion encloses a second cavity, and the equivalent diameter of the first cavity is greater than the equivalent diameter of the second cavity.

[0009] The high temperature steam cooking appliance of the utility model also has the following additional technical features:

[0010] The high-temperature steam cooking appliance also includes a seal, which has a fixing portion fixed to the edge of the opening, a transition section between the heat-conducting portion and the exhaust portion, and the fixing portion abuts and seals against the transition section to separate the steam inlet and the steam outlet.

[0011] A juice receiving tray is also provided between the cooking cavity and the water storage cavity. The juice receiving tray is provided with a through hole for the exhaust part to extend into. The mouth edge of the through hole is bent downward to form a matching rib. The sealing member also includes a sealing lip, which abuts against the matching rib for sealing.

[0012] A steaming rack is arranged in the cooking cavity, and the steaming rack has a closed area arranged corresponding to the steam exhaust portion.

[0013] The steam outlet is opened on the side wall of the exhaust portion, and the size of the steam outlet is smaller than the size of the opening.

[0014] A juice receiving pan is also provided between the cooking cavity and the water storage cavity, the steam exhaust portion passes through the juice receiving pan, the juice receiving pan has an annular boss arranged around the steam exhaust portion, and the lower edge of the steam outlet is not lower than the upper edge of the annular boss.

[0015] The juice receiving tray also includes a collecting area located on the outer periphery of the annular boss, the top wall of the annular boss is provided with a flow guiding slope inclined toward the collecting area, a steaming rack is provided in the cooking cavity, the steaming rack is provided with an air flow opening, and the projection of the air flow opening toward the juice receiving tray is located on the flow guiding slope and / or the collecting area.

[0016] The second heating element is located in the first cavity, and the side wall of the second heating element cooperates with the inner wall of the first cavity to form a superheated steam channel.

[0017] The steam inlet and the opening are both provided on the top wall of the isolating member, and the bottom of the superheating cover is provided with a steam passage connecting the steam inlet and the superheated steam passage.

[0018] The width of the first cavity and / or the second cavity gradually decreases from bottom to top.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0020] 1. In the present invention, the overheating cover includes a heat conducting part and a steam exhaust part above the heat conducting part. The equivalent diameter of the second cavity surrounded by the steam exhaust part is smaller than the equivalent diameter of the first cavity surrounded by the heat conducting part. The flow path of the overheated steam in the second heating cavity is from the heat conducting part to the steam exhaust part, so that in the process of the overheated steam in the second heating cavity flowing from bottom to top, the channel for the overheated steam to flow becomes narrower from wide. In the process of the overheated steam flowing, the gas pressure gradually increases and the flow rate gradually accelerates, and finally the overheated steam is discharged from the steam outlet into the cooking cavity with a greater pressure. The overheated steam has a greater kinetic energy when it is discharged, so it can quickly flow to the upper layer of the cooking cavity and fill various areas in the cooking cavity, thereby ensuring the uniform heating of each layer of food in the cooking cavity and improving the cooking taste and user experience.

[0021] In addition, the steam exhaust portion passes through the opening of the isolation component, so that the steam outlet is higher than the opening, thereby increasing the height of the position where the steam outlet is located, reducing the probability of the user accidentally pouring water into the steam outlet when adding water to the water storage chamber, ensuring that the second heating element is used to heat saturated steam, and avoiding noise caused by boiling water in the second heating chamber.

[0022] 2. As a preferred embodiment of the present invention, the high-temperature steam cooking appliance further comprises a sealing member, wherein the sealing member comprises a fixing portion fixed to the edge of the opening, a transition section is provided between the heat-conducting portion and the exhaust portion, and the fixing portion abuts and seals against the transition section to separate the steam inlet from the steam outlet. The sealing member separates the steam inlet from the steam outlet, so that when the saturated steam in the first heating chamber enters the second heating chamber from the steam inlet, it can only flow in the space between the isolation member and the superheating cover, and cannot flow out directly from the steam outlet, thereby ensuring that the steam flows along a preset path and efficiently generates superheated steam.

[0023] 3. As a preferred embodiment of the present invention, the steam outlet is provided on the side wall of the exhaust portion, and the size of the steam outlet is smaller than the size of the opening. The steam outlet is provided on the side wall of the exhaust portion, so that the steam outlet faces one side, and the top of the exhaust portion is closed, so as to block the condensed water, food soup, etc. dripping from the cooking cavity above, and prevent the liquid from directly dripping into the second heating cavity through the steam outlet, thereby ensuring the cleanliness of the second heating element and preventing odor contamination. The size of the steam outlet is small, so that the superheated steam will first gather inside the second cavity before being discharged, and will be discharged through the steam outlet only when the air pressure increases, further increasing the air pressure when the steam is discharged, improving the uniformity of the distribution of the superheated steam in the cooking cavity, and improving the cooking effect.

[0024] 4. As a preferred embodiment of the present invention, a juice receiving pan is further provided between the cooking cavity and the water storage cavity, the steam exhaust portion passes through the juice receiving pan, the juice receiving pan has an annular boss provided around the steam exhaust portion, and the lower edge of the steam outlet is not lower than the upper edge of the annular boss. The steam outlet is not lower than the annular boss, so that when the superheated steam is discharged from the steam outlet, the annular boss will not block the superheated steam, thereby ensuring the flow efficiency of the superheated steam. At the same time, during the cooking process, a certain amount of condensed water will accumulate in the gap between the annular boss and the steam exhaust portion, and the steam outlet is not lower than the annular boss, so that when the liquid level in the gap reaches the maximum height, the liquid will not enter the steam outlet.

[0025] 5. As a preferred embodiment of the present invention, the steam inlet and the opening are both provided on the top wall of the isolating element, and the bottom of the superheating cover has a steam passage connecting the steam inlet and the superheating steam passage. The saturated steam generated in the first heating chamber enters the interior of the isolating element through the steam inlet on the top wall of the isolating element, flows downward in the space between the isolating element and the superheating cover, enters the superheating steam passage in the steam passage at the bottom of the superheating cover, and is fully contacted and heated by the second heating element during the upward flow in the superheating steam passage, forming superheated steam, and finally discharged from the top of the superheating steam passage into the cooking chamber. In this way, the flow path of the saturated steam from generation to discharge is more tortuous, thereby extending the flow path, increasing the contact time between the saturated steam and the second heating element, improving the heating effect of the saturated steam in the air outlet passage, and thus ensuring the generation of superheated steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0027] Figure 1 A cross-sectional view of the high-temperature steam cooking appliance according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Magnified view of area A in the middle;

[0029] Figure 3 It is a structural schematic diagram of a part of the high-temperature steam cooking appliance in one embodiment of the utility model;

[0030] Figure 4 This is a schematic structural diagram of the overheating cover in one embodiment of the utility model;

[0031] Figure 5 A cross-sectional view of a part of the high-temperature steam cooking appliance in one embodiment of the utility model;

[0032] Figure 6 for Figure 5 Magnified view of area B.

[0033] in:

[0034] 1 cooking cavity; 11 steaming rack; 111 air flow opening;

[0035] 2 water storage chamber; 21 first heating chamber; 22 second heating chamber;

[0036] 3 a first heating element;

[0037] 4 second heating element;

[0038] 5 juice receiving plate; 51 annular boss; 52 flow guiding slope; 53 through hole; 54 collecting area;

[0039] 6 isolating member; 61 steam inlet; 62 opening; 621 matching rib position;

[0040] 7 overheating cover; 71 heat transfer part; 711 first cavity; 72 exhaust part; 721 second cavity; 73 steam passage; 74 steam outlet; 75 transition section;

[0041] 8 sealing member; 81 fixing portion; 82 sealing lip. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0044] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0047] like Figures 1 to 6As shown, a high-temperature steam cooking device comprises a cooking cavity 1 and a water storage cavity 2 located below the cooking cavity 1, an overheating cover 7 and an isolating member 6 arranged outside the overheating cover 7 are arranged in the water storage cavity 2, so as to divide the water storage cavity 2 into a first heating cavity 21 located outside the isolating member 6, and a second heating cavity 22 located inside the isolating member 6, a first heating element 3 is arranged in the first heating cavity 21, a second heating element 4 is arranged in the overheating cover 7, a steam inlet 61 and an opening 62 are provided in the isolating member 6, the overheating cover 7 comprises a heat conducting portion 71 and a steam exhaust portion 72 located above the heat conducting portion 71, the steam exhaust portion 72 extends from the opening 62 and has a steam outlet 74, the heat conducting portion 71 encloses a first cavity 711, the steam exhaust portion 72 encloses a second cavity 721, and the equivalent diameter of the first cavity 711 is greater than the equivalent diameter of the second cavity 721.

[0048] It should be noted that in the high-temperature steam cooking appliance of the present invention, "high temperature" is relative to traditional steam cooking appliances (such as steamers, etc.). The high-temperature steam cooking appliance in the present invention uses superheated steam for heating, and the heating efficiency is higher than the traditional heating using saturated steam, so it is named high-temperature steam cooking appliance.

[0049] In the present invention, the overheating cover 7 includes a heat conducting part 71 and a steam exhaust part 72 above the heat conducting part 71. The equivalent diameter of the second cavity 721 surrounded by the steam exhaust part 72 is smaller than the equivalent diameter of the first cavity 711 surrounded by the heat conducting part 71. The flow path of the overheated steam in the second heating cavity 22 is from the heat conducting part 71 to the steam exhaust part 72, so that the passage for the overheated steam to flow in the second heating cavity 22 becomes narrower as the overheated steam in the second heating cavity 22 flows from bottom to top. During the flow of the overheated steam, the air pressure gradually increases and the flow rate gradually accelerates, and finally the overheated steam is discharged from the steam outlet 74 into the cooking cavity 1 at a relatively high pressure. The overheated steam has a relatively large kinetic energy when it is discharged, so it can quickly flow to the upper layer of the cooking cavity 1 and fill various areas in the cooking cavity 1, thereby ensuring the uniform heating of each layer of food in the cooking cavity 1 and improving the cooking taste and user experience.

[0050] In addition, the exhaust portion 72 passes through the opening 62 of the isolation member 6, so that the steam outlet 74 is higher than the opening 62, thereby increasing the height of the position where the steam outlet 74 is located, reducing the probability of the user accidentally pouring water into the steam outlet 74 when adding water to the water storage chamber 2, ensuring that the second heating element 4 is used to heat saturated steam, and avoiding noise caused by boiling water in the second heating chamber 22.

[0051] It can be understood that the saturated steam generated by heating in the first heating chamber 21 enters the interior of the isolation member 6 through the steam inlet 61, flows in the space between the isolation member 6 and the superheating cover 7, and then enters the interior of the superheating cover 7. In the process of the saturated steam flowing upward in the superheating cover 7, it contacts and is heated by the second heating member 4 to form superheated steam, which is then discharged into the cooking chamber 1 through the steam outlet 74 at the top.

[0052] Moreover, Figure 1 , Figure 2 As shown, the second heating element 4 is arranged in the first cavity 711, and the equivalent diameter of the first cavity 711 is larger, so the space is larger, and the steam flow speed is slower, which will prolong the contact time with the second heating element 4, thereby improving the heating effect of saturated steam and accelerating the generation of superheated steam. The second cavity 721 is a cavity, so the superheated steam rising here will gather briefly in the second cavity 721, and will be discharged from the steam outlet 74 when the gas pressure rises to a certain level.

[0053] It should be noted that the present invention does not limit the structure of the overheating cover 7. In one embodiment, there is a smooth transition between the heat conduction portion 71 and the exhaust portion 72 of the overheating cover 7. For example, the overheating cover 7 is a cone or truncated cone structure as a whole, that is, the equivalent diameter gradually decreases from bottom to top, so as to form the first cavity 711 at the lower part of the overheating cover 7 and the second cavity 721 at the upper part.

[0054] In another embodiment, if Figure 4 As shown, the overheating cover 7 is a variable diameter structure, that is, when the side wall of the overheating cover 7 extends upward, the diameter of a part of the area is suddenly reduced to form the exhaust portion 72 at the top, so as to further reduce the space in the second cavity 721 and increase the steam pressure.

[0055] In this embodiment, the heat conducting part 71 and the exhaust part 72 may be in the shape of a straight cylinder, that is, the equivalent diameters of the first cavity 711 in each region in the up-down direction are the same, and the equivalent diameters of the second cavity 721 in each region in the up-down direction are also the same. Preferably, the heat conducting part 71 and the exhaust part 72 themselves are also in a structure in which the equivalent diameters gradually decrease from bottom to top, so that the air pressure gradually increases during the upward flow of the superheated steam, thereby increasing the air pressure during the exhaust, and also making the overall structure of the superheating cover 7 more uniform, convenient for processing and more beautiful.

[0056] It is understandable that the present invention does not limit the shapes of the heat conducting portion 71 and the exhaust portion 72. When the cross-sections of the two are circular, the diameter of the first cavity 711 is greater than the diameter of the second cavity 721. When the two are non-circular, the equivalent diameter represents the diameter of the circumscribed circle of their cross-sections.

[0057] As a preferred embodiment of the present invention, Figure 2 , Figure 5 , Figure 6 As shown, the high-temperature steam cooking appliance also includes a sealing member 8, which has a fixing portion 81 fixed to the edge of the opening 62, and a transition section 75 is provided between the heat-conducting portion 71 and the exhaust portion 72, and the fixing portion 81 abuts against and seals the transition section 75 to separate the steam inlet 61 and the steam outlet 74.

[0058] The seal 8 separates the steam inlet 61 and the steam outlet 74, so that when the saturated steam in the first heating chamber 21 enters the second heating chamber 22 from the steam inlet 61, it can only flow in the space between the isolation member 6 and the superheating cover 7, and cannot flow out directly from the steam outlet 74, thereby ensuring that the steam flows along a preset path and efficiently generates superheated steam.

[0059] Specifically, this embodiment does not limit the transition mode between the heat conducting portion 71 and the exhaust portion 72 of the overheating cover 7. In one embodiment, Figure 4 As shown, the heat conducting portion 71 and the exhaust portion 72 are connected by an arc transition, that is, the transition section 75 has a transition arc surface. Of course, the transition section 75 can also be a step surface, a transition slope, etc., which is not limited here.

[0060] Preferably, if Figure 6 As shown, the fixing portion 81 is provided with a positioning groove, and the edge of the opening 62 is located in the positioning groove, so that the fixing portion 81 covers the edge of the opening 62 to improve the sealing stability.

[0061] Furthermore, if Figure 2 , Figure 5 , Figure 6 As shown, a juice receiving tray 5 is further provided between the cooking cavity 1 and the water storage cavity 2. The juice receiving tray 5 is provided with a through hole 53 for the exhaust portion 72 to extend into. The edge of the through hole 53 is bent downward to form a matching rib 621. The sealing member 8 also includes a sealing lip 82, which abuts against the matching rib 621 for sealing.

[0062] When the user places the juice receiving tray 5 above the water storage chamber 2 , the sealing member 8 abuts against the bottom of the juice receiving tray 5 to form a seal, so that the superheated steam directly flows into the cooking chamber 1 above the juice receiving tray 5 .

[0063] The downward bending of the mating rib 621 can reduce the distance between it and the isolating member 6 and squeeze the sealing member 8, making the contact between it and the sealing member 8 tighter and ensuring the sealing performance. In addition, the mating rib 621 can also form a channel at the through hole 53, improving the positioning effect of the through hole 53 and the exhaust portion 72, and reducing the difficulty of assembly for users.

[0064] The assembly relationship and assembly sequence of the cooking utensil of the present invention are as follows: the sealing member 8 is pre-interference-fitted to the opening 62 of the isolating member 6 to form an assembly, and then the overheating cover 7 is sleeved on the outside of the second heating member 4, and then the isolating member 6 is sleeved on the outside of the overheating cover 7, so that the exhaust part 72 passes through the opening 62, and then the juice receiving tray 5 is placed above the water storage cavity 2, and the juice receiving tray 5 presses the sealing member 8 and the sealing ring on the edge of the water tank to form a sealed environment.

[0065] In one embodiment of the present invention, a steaming rack 11 is disposed in the cooking cavity 1 , and the steaming rack 11 has a closed area disposed corresponding to the steam exhaust portion 72 .

[0066] The steaming rack 11 is provided with an air flow opening 111 for superheated steam to flow through. During the cooking process, the soup and condensed water of the food above the steaming rack 11 will also drip to the bottom of the steaming rack 11 through the air flow opening 111. The area of ​​the steaming rack 11 corresponding to the steam exhaust portion 72 is closed, so that the soup and condensed water will drip into the juice receiving tray 5 and be collected, and will not drip into the second heating chamber 22 or the water storage chamber 2 through the steam outlet 74, thereby ensuring the cleanliness of the second heating element 4 and the water storage chamber 2, and also avoiding the occurrence of cross-flavor when steaming multiple foods.

[0067] Specifically, the steam exhaust portion 72 is located at the center of the juice receiving tray 5, and the central area of ​​the steam rack 11 is closed, so that the superheated steam discharged from the steam outlet 74 cannot directly pass through the steam rack 11 upward to heat the food, but first flows from the central area of ​​the steam rack 11 to the edge area, and then passes through the air flow opening 111 in the edge area to heat the food. In this way, the food on the steam rack 11 is heated more evenly, and the superheated steam is prevented from being concentrated too much in the central area, thereby improving the cooking taste.

[0068] In this embodiment, since the area of ​​the steam rack 11 corresponding to the exhaust portion 72 is closed, the steam outlet 74 can be opened at the top of the exhaust portion 72 facing upward, or can be opened at the side wall of the exhaust portion 72 facing one side.

[0069] In another embodiment of the present invention, Figure 2 , Figure 3 , Figure 4 As shown, the steam outlet 74 is opened on the side wall of the steam exhaust portion 72 , and the size of the steam outlet 74 is smaller than the size of the opening 62 .

[0070] The steam outlet 74 is provided on the side wall of the steam exhaust portion 72, so that the steam outlet 74 faces one side, and the top of the steam exhaust portion 72 is closed, so that the condensed water, food soup, etc. dripping from the upper cooking cavity 1 can be blocked, and liquid is prevented from directly dripping into the second heating cavity 22 through the steam outlet 74, thereby ensuring the cleanliness of the second heating element 4 and preventing odor contamination. The size of the steam outlet 74 is small, so that the superheated steam will first gather inside the second cavity 721 before being discharged, and will only be discharged through the steam outlet 74 when the air pressure increases, further increasing the air pressure when the steam is discharged, improving the uniformity of the distribution of the superheated steam in the cooking cavity 1, and improving the cooking effect.

[0071] In this embodiment, the top of the steam exhaust portion 72 is closed, and the steam outlet 74 faces one side, which can block the liquid above. Therefore, the steam rack 11 can be provided with a closed area corresponding to the steam exhaust portion 72, or it can be provided without a closed area, that is, an air flow outlet 111 is also opened in the area corresponding to the steam exhaust portion 72.

[0072] Specifically, Figure 4 As shown, there are multiple steam outlets 74 and they are evenly spaced apart along the circumference of the steam exhaust portion 72 .

[0073] Furthermore, a juice receiving tray 5 is provided between the cooking cavity 1 and the water storage cavity 2 , the steam exhaust portion 72 passes through the juice receiving tray 5 , the juice receiving tray 5 has an annular boss 51 arranged around the steam exhaust portion 72 , and the lower edge of the steam outlet 74 is not lower than the upper edge of the annular boss 51 .

[0074] The steam outlet 74 is not lower than the annular boss 51, so that when the superheated steam is discharged from the steam outlet 74, the annular boss 51 will not block the superheated steam, thereby ensuring the flow efficiency of the superheated steam. At the same time, during the cooking process, a certain amount of condensed water will accumulate in the gap between the annular boss 51 and the steam exhaust portion 72. The steam outlet 74 is not lower than the annular boss 51, so that when the liquid level in the gap reaches the maximum height, the liquid will not enter the steam outlet 74.

[0075] Furthermore, if Figure 2 , Figure 3 As shown, the juice receiving tray 5 also includes a collecting area 54 located on the outer periphery of the annular boss 51, and the top wall of the annular boss 51 is provided with a guide slope 52 inclined toward the collecting area 54. A steaming rack 11 is provided in the cooking cavity 1, and the steaming rack 11 is provided with an air flow opening 111. The projection of the air flow opening 111 toward the juice receiving tray 5 is located on the guide slope 52 and / or the collecting area 54.

[0076] The collection area 54 is used to collect condensed water and food soup dripping from the upper cooking cavity 1. The collection area 54 is separated from the steam exhaust portion 72 by the annular boss 51, so that the liquid in the collection area 54 is difficult to flow over the annular boss 51 to the steam exhaust portion 72, thereby ensuring the cleanliness of the steam exhaust portion 72. At the same time, the top wall of the annular boss 51 is inclined to form a guide slope 52 inclined toward the collection area 54, so as to facilitate the liquid dripping to the annular boss 51 to be drained to the outer collection area 54.

[0077] The airflow opening 111 corresponds to the guide slope 52, so that the liquid dripping from the airflow opening 111 can slide to the collection area 54 via the guide slope 52. The airflow opening 111 corresponds to the collection area 54, so that the liquid dripping from the airflow opening 111 can directly fall into the collection area 54. Alternatively, the airflow opening 111 is provided with a plurality of airflow openings, some of which correspond to the collection area 54, and some of which correspond to the guide slope 52, which is not limited here.

[0078] As a preferred embodiment, Figure 2 , Figure 5 As shown, the second heating element 4 is located in the first cavity 711 , and the side wall of the second heating element 4 cooperates with the inner wall of the first cavity 711 to form a superheated steam channel.

[0079] The space in the first cavity 711 is relatively large, and the steam flow speed is relatively slow, which will prolong the contact time with the second heating element 4, thereby improving the heating effect of the saturated steam and accelerating the generation of superheated steam. Figure 5 As shown, the second heating element 4 is provided with transversely protruding heating protrusions at intervals along its circumference, and the superheated steam channel is formed between two adjacent heating protrusions. Saturated steam flows through the superheated steam channel and is fully heated in contact with the second heating element 4, which prolongs the heating time, and also increases the contact area between the saturated steam and the second heating element 4, thereby improving the efficiency of generating superheated steam.

[0080] like Figure 5 , Figure 6 As shown, the steam inlet 61 and the opening 62 are both provided on the top wall of the isolating member 6, and the bottom of the superheating cover 7 has a steam passage 73 connecting the steam inlet 61 and the superheated steam passage. Specifically, the steam inlet 61 is multiple and is arranged at intervals along the circumference of the opening 62.

[0081] The saturated steam generated in the first heating chamber 21 enters the interior of the isolating member 6 through the steam inlet 61 on the top wall of the isolating member 6, flows downward in the space between the isolating member and the superheating member 7, enters the superheated steam channel in the steam passage 73 at the bottom of the superheating member 7, and is fully contacted and heated by the second heating member 4 during the upward flow in the superheated steam channel, forming superheated steam, which is finally discharged from the steam outlet 74 of the steam exhaust portion 72 into the cooking chamber 1. In this way, the flow path of the saturated steam from generation to discharge is more tortuous, thereby extending the flow path, increasing the contact time between the saturated steam and the second heating member 4, improving the heating effect of the saturated steam in the superheated steam channel, and thus ensuring the generation of superheated steam.

[0082] The present embodiment does not limit the formation method of the steam passage 73. In one embodiment, a steam passage port is provided at the bottom of the side wall of the overheating cover 7 to form the steam passage 73. In another embodiment, Figure 2 , Figure 5 As shown, there is a gap between the bottom of the overheating cover 7 and the bottom wall of the water storage chamber 2 to form the steam passage 73.

[0083] Preferably, if Figure 5 As shown, the first heating element 3 is a heating plate disposed at the bottom of the first heating chamber 21, and is used to heat the water in the water storage chamber 2. The first heating element 3 can be located in the first heating chamber 21, or can be located in the first heating chamber 21. Figure 5 As shown, it constitutes the bottom wall of the first heating chamber 21.

[0084] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0085] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0086] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A high-temperature steam cooking appliance, comprising a cooking cavity and a water storage cavity located below the cooking cavity, wherein an overheating cover and an isolating member arranged outside the overheating cover are arranged in the water storage cavity, so as to divide the water storage cavity into a first heating cavity located outside the isolating member and a second heating cavity located inside the isolating member, characterized in that: A first heating element is arranged in the first heating chamber, a second heating element is arranged in the superheating cover, the isolating element is provided with a steam inlet and an opening, the superheating cover comprises a heat conducting portion and a steam exhaust portion located above the heat conducting portion, the steam exhaust portion extends from the opening and is provided with a steam outlet, the heat conducting portion encloses a first cavity, the steam exhaust portion encloses a second cavity, and the equivalent diameter of the first cavity is greater than the equivalent diameter of the second cavity.

2. The high temperature steam cooking appliance according to claim 1, characterized in that: The high-temperature steam cooking appliance also includes a seal, which has a fixing portion fixed to the edge of the opening, a transition section between the heat-conducting portion and the exhaust portion, and the fixing portion abuts and seals against the transition section to separate the steam inlet and the steam outlet.

3. The high temperature steam cooking appliance according to claim 2, characterized in that: A juice receiving tray is also provided between the cooking cavity and the water storage cavity. The juice receiving tray is provided with a through hole for the exhaust part to extend into. The mouth edge of the through hole is bent downward to form a matching rib. The sealing member also includes a sealing lip, which abuts against the matching rib for sealing.

4. The high temperature steam cooking appliance according to claim 1, characterized in that: A steaming rack is arranged in the cooking cavity, and the steaming rack has a closed area arranged corresponding to the steam exhaust portion.

5. The high temperature steam cooking appliance according to claim 1, characterized in that: The steam outlet is opened on the side wall of the exhaust portion, and the size of the steam outlet is smaller than the size of the opening.

6. The high temperature steam cooking appliance according to claim 5, characterized in that: A juice receiving pan is also provided between the cooking cavity and the water storage cavity, the steam exhaust portion passes through the juice receiving pan, the juice receiving pan has an annular boss arranged around the steam exhaust portion, and the lower edge of the steam outlet is not lower than the upper edge of the annular boss.

7. The high temperature steam cooking appliance according to claim 6, characterized in that: The juice receiving tray also includes a collecting area located on the outer periphery of the annular boss, the top wall of the annular boss is provided with a flow guiding slope inclined toward the collecting area, a steaming rack is provided in the cooking cavity, the steaming rack is provided with an air flow opening, and the projection of the air flow opening toward the juice receiving tray is located on the flow guiding slope and / or the collecting area.

8. The high temperature steam cooking appliance according to claim 1, characterized in that: The second heating element is located in the first cavity, and the side wall of the second heating element cooperates with the inner wall of the first cavity to form a superheated steam channel.

9. The high temperature steam cooking appliance according to claim 8, characterized in that: The steam inlet and the opening are both provided on the top wall of the isolating member, and the bottom of the superheating cover is provided with a steam passage connecting the steam inlet and the superheated steam passage.

10. The high temperature steam cooking appliance according to any one of claims 1 to 9, characterized in that: The width of the first cavity and / or the second cavity gradually decreases from bottom to top.

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