Electric steamer

Abstract

The utility model relates to an electric steamer which comprises a base, a cooking body and a water tank, the cooking body is arranged above the base and provided with a cooking cavity, a steam generator, a first heating piece and a second heating piece are arranged in the base, and an inner cavity of the steam generator is divided into a steam generation cavity and a high-temperature steam cavity through a partition plate; the steam generation cavity is communicated with the water tank through a water control assembly, the water control assembly is used for controlling the water level in the steam generation cavity to be below a preset water line, steam holes communicating the steam generation cavity with the high-temperature steam cavity are formed in the partition plate, the lowest position of the steam holes is higher than the preset water line, and the high-temperature steam cavity is communicated with the cooking cavity. The first heating piece is arranged at the bottom of the steam generation cavity; the second heating piece is arranged at the bottom of the high-temperature steam cavity. According to the electric steamer, due to the fact that the second heating piece is far away from the cooking cavity, the high temperature generated by the second heating piece cannot affect parts at the bottom of the cooking cavity, and therefore the requirement for high-temperature steam cooking can be met, and cost cannot be additionally increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to an electric steamer. BACKGROUND

[0002] Steam cooking can make food retain nutrients fully, and is one of the common cooking methods in daily life. An electric steamer is a very common cooking appliance using steam cooking. A traditional electric steamer heats water in the bottom to generate steam to heat food in a cooking cavity. The steam generated in this way has a high saturation degree and a low temperature, and will quickly condense into a water film on the surface of the food after contacting the food, resulting in over-wetting of the food and affecting the taste.

[0003] Using high-temperature steam can effectively improve the taste of food. In the industry, high-temperature steam is currently generated by heating steam generated by primary heating in a secondary heating manner. In the prior art, the heat source for secondary heating is arranged above the heat source for primary heating and close to the cooking cavity, and a large amount of heat is transferred to the parts at the bottom of the cooking cavity, which can easily cause deformation of the parts. In order to solve the problem of deformation of the parts, it is often necessary to increase a heat shield or reduce the heating temperature of the heat source for secondary heating. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide an electric steamer to solve the problem of deformation of the parts at the bottom of the cooking cavity.

[0005] The present application provides an electric steamer, which comprises a base, a cooking main body and a water tank. The cooking main body is arranged above the base, and the cooking main body is provided with a cooking cavity. A steam generator, a first heating member and a second heating member are arranged in the base. An inner cavity of the steam generator is divided into a steam generation cavity and a high-temperature steam cavity by a partition plate. The steam generation cavity and the water tank are connected by a water control assembly. The water control assembly is used to control the water level in the steam generation cavity below a preset water level line. The partition plate is provided with a steam hole connecting the steam generation cavity and the high-temperature steam cavity. The lowest part of the steam hole is higher than the preset water level line. The high-temperature steam cavity and the cooking cavity are connected. The first heating member is arranged at the bottom of the steam generation cavity and is used to heat the water in the steam generation cavity. The second heating member is arranged at the bottom of the high-temperature steam cavity and is used to heat the steam in the high-temperature steam cavity.

[0006] The electric steamer provided in the application can heat water in the steam generation cavity by the first heating member, so that low-temperature steam is formed, the low-temperature steam enters the high-temperature steam cavity through the steam hole, is heated by the second heating member, high-temperature steam is formed, and is finally output to the cooking cavity to cook food, so that high-temperature cooking can be realized. Since the water control assembly is arranged, the water level in the steam generation cavity can be controlled below the preset water level line, so that low-temperature steam can be quickly generated. Since the lowest part of the steam hole is higher than the preset water level line, it is ensured that water cannot enter the high-temperature steam cavity, so that the heating efficiency of the low-temperature steam by the second heating member is not affected. Since the first heating member is arranged at the bottom of the steam generation cavity, the water in the steam generation cavity can prevent heat from being transmitted to the bottom of the cooking cavity, so that the high temperature generated by the first heating member does not affect the parts at the bottom of the cooking cavity. Meanwhile, since the second heating member is arranged at the bottom of the high-temperature steam cavity and is far away from the cooking cavity, the high temperature generated by the second heating member does not affect the parts at the bottom of the cooking cavity, so that it is not necessary to increase a heat insulation cover or to reduce the heating temperature of the second heating member, so that the demand for high-temperature steam cooking can be met, and the cost is not additionally increased.

[0007] In one of the embodiments, the bottom wall of the inner cavity of the steam generator is horizontally arranged, and the partition plate is arranged to extend upward from the bottom wall of the inner cavity of the steam generator, so that the inner cavity of the steam generator is divided into the steam generation cavity and the high-temperature steam cavity, both of which have upper openings.

[0008] In this way, the first heating member and the second heating member can be arranged at the same horizontal height position, and the structure is very compact.

[0009] In one of the embodiments, the steam generator further comprises a baffle connected to the upper end of the partition plate and the upper end of the side wall of the steam generator, so as to close the upper opening of the steam generation cavity.

[0010] Alternatively, the electric steamer further comprises a water receiving tray, the bottom wall of the water receiving tray blocks the upper opening of the steam generation cavity, and the water receiving tray is further provided with a steam outlet communicating with the high-temperature steam cavity and the cooking cavity.

[0011] In this way, it is ensured that the low-temperature steam enters the high-temperature steam cavity through the steam hole, is heated into high-temperature steam, and is then output to the cooking cavity, so that the high-temperature steam cooking effect of the electric steamer is ensured.

[0012] In one of the embodiments, the partition plate is annular, and the steam generation cavity is arranged around the outer peripheral side of the high-temperature steam cavity.

[0013] Alternatively, the partition plate is in the shape of a straight line, and the steam generation cavity is arranged on one side of the high-temperature steam cavity.

[0014] Therefore, the partition plate is simple in structure, the water inlet of the steam generating cavity can be arranged on the side wall of the steam generating cavity, thereby facilitating the connection between the steam generating cavity and the water tank and facilitating the water tank to supply water to the steam generating cavity.

[0015] In one of the embodiments, the second heating member is arranged below the bottom wall of the high-temperature steam cavity.

[0016] Therefore, the second heating member is far away from the cooking cavity, the high temperature generated by the second heating member does not affect the components at the bottom of the cooking cavity, and the heating demand of the steam in the high-temperature steam cavity is met.

[0017] In one of the embodiments, the area of the orthographic projection of the bottom wall of the steam generating cavity on the horizontal plane is S1, the area of the orthographic projection of the bottom wall of the high-temperature steam cavity on the horizontal plane is S2, and 0.3≤S2 / (S1+S2)≤0.8.

[0018] Therefore, S2 / (S1+S2) is moderate in size, which can ensure the amount of low-temperature steam and high-temperature steam at the same time, thereby meeting the demand of high-temperature steam for efficient cooking of food.

[0019] In one of the embodiments, the steam holes are one or more, the flow area of a single steam hole is S3, S3≥10mm 2 , and the sum of the flow areas of all the steam holes is S, S≥100mm 2 .

[0020] Therefore, S3≥10mm 2 , the low-temperature steam in the steam generating cavity can smoothly enter the high-temperature steam cavity, S≥100mm 2 , which can ensure that enough low-temperature steam enters the high-temperature steam cavity, thereby being beneficial to the efficient generation of high-temperature steam.

[0021] In one of the embodiments, the bottom wall of the high-temperature steam cavity is provided with an upwardly extending heat transfer sheet, and the heat transfer sheet is one or more.

[0022] Therefore, by arranging the heat transfer sheet, the heat transfer area can be increased, so that the low-temperature steam in the high-temperature steam cavity can be more efficiently heated to form high-temperature steam.

[0023] In one of the embodiments, the thickness of the heat transfer sheet is L1, L1=0.1mm~3mm; and / or, the distance between adjacent heat transfer sheets is L2, L2=1mm~10mm; and / or, the height of the heat transfer sheet is H, H=20mm~100mm.

[0024] L1=0.1mm~3mm, the thickness L1 of the heat transfer sheet is moderate in size, which can simultaneously have the advantages of simple processing, less heat loss and good heat transfer capacity. L2=1mm~10mm, in this way, L2 is moderate in size, a sufficient number of heat transfer sheets can be arranged in a limited space, thereby ensuring that the heat transfer sheet has a better heat transfer effect, and at the same time, the steam can flow smoothly in the gap between adjacent heat transfer sheets, so that the heat transfer sheet can efficiently transfer heat to the low-temperature steam, and the high-temperature steam formed can be smoothly discharged. H=20mm~100mm, the heat transfer sheet in this height range can ensure efficient heat transfer of the heat of the second heating element to the low-temperature steam, thereby improving the efficiency of generating high-temperature steam.

[0025] In one of the embodiments, a cylindrical steam guide sleeve is arranged in the base, the steam guide sleeve is sealingly connected to the upper end of the steam generator, and the steam guide sleeve is in communication with the high-temperature steam chamber and the cooking chamber.

[0026] In this way, the arrangement of the steam guide sleeve is equivalent to increasing the capacity of the high-temperature steam chamber, which is beneficial to heat more low-temperature steam into high-temperature steam and then discharge it into the cooking chamber, thereby improving the efficiency of high-temperature steam cooking.

[0027] In one of the embodiments, the steam guide sleeve is a plastic part, and the distance between the lower end of the steam guide sleeve and the bottom wall of the high-temperature steam chamber is H2, H2≥10mm.

[0028] The steam guide sleeve is a plastic part, which is beneficial to reduce the production cost. H2≥10mm, the distance between the steam guide sleeve and the second heating element is large, thereby reducing the requirement for the temperature resistance of the steam guide sleeve, and prolonging the service life of the steam guide sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 It is a perspective view of an electric steamer according to an embodiment of the present application;

[0031] Figure 2 It is a sectional view of an electric steamer according to an embodiment of the present application

[0032] Figure 3 It is a sectional view of a steam generator according to an embodiment of the present application;

[0033] Figure 4 It is a sectional view of a steam generator according to an embodiment of the present application; Figure 3 It is a sectional view of a steam generator according to an embodiment of the present application;

[0034] Figure 5 for Figure 3 A bottom view of the steam generator shown;

[0035] Figure 6 This is a cross-sectional view of a steam generator according to another embodiment of this application;

[0036] Figure 7 for Figure 6 Top view of the steam generator shown;

[0037] Figure 8 for Figure 6 A bottom view of the steam generator shown;

[0038] Figure 9 This is a cross-sectional view of the base according to an embodiment of this application;

[0039] Figure 10 for Figure 9 Top view of the base shown.

[0040] Reference numerals: 10, Steam generator; 11, Steam generating chamber; 111, Water inlet; 12, High-temperature steam chamber; 13, Baffle; 131, Steam hole; 14, Baffle; 20, First heating element; 30, Second heating element; 40, Heat transfer plate; 100, Base; 110, Steam guide sleeve; 200, Cooking body; 201, Cooking chamber; 210, Pot lid; 220, Steaming rack; 230, Steamer basket; 240, Water tray; 300, Water tank; 400, Water control assembly. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0043] Furthermore, the terms "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or a quantity of indicated features. Thus, a feature defined with "first", "second" can include at least one of the feature implicitly or explicitly. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined and limited.

[0044] In the present application, unless otherwise explicitly specified and limited, "on", "under", "above", and "over" of a first feature to a second feature can be that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "on", "above", and "over" of a first feature to a second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. "Under", "below", and "underneath" of a first feature to a second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0045] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0046] Please refer to Figures 1 to 5The application provides an electric steamer, which comprises a base 100, a cooking main body 200 and a water tank 300. The cooking main body 200 is arranged above the base 100 and is provided with a cooking cavity 201. The base 100 is internally provided with a steam generator 10, a first heating member 20 and a second heating member 30. The inner cavity of the steam generator 10 is divided into a steam generation cavity 11 and a high-temperature steam cavity 12 by a partition plate 13. The steam generation cavity 11 and the high-temperature steam cavity 12 are provided with the partition plate 13. The steam generation cavity 11 and the water tank 300 are communicated by a water control assembly 400. The water control assembly 400 is used for controlling the water level in the steam generation cavity 11 below a preset water level line A. The partition plate 13 is provided with a steam hole 131 which communicates the steam generation cavity 11 and the high-temperature steam cavity 12. The lowest part of the steam hole 131 is higher than the preset water level line A. The high-temperature steam cavity 12 and the cooking cavity 201 are communicated. The first heating member 20 is arranged at the bottom of the steam generation cavity 11 and is used for heating the water in the steam generation cavity 11. The second heating member 30 is arranged at the bottom of the high-temperature steam cavity 12 and is used for heating the steam in the high-temperature steam cavity 12. In this way, the water in the steam generation cavity 11 is heated by the first heating member 20, so that low-temperature steam can be formed. The low-temperature steam enters the high-temperature steam cavity 12 through the steam hole 131, is heated by the second heating member 30, forms high-temperature steam and is finally output to the cooking cavity 201 to cook food, so that high-temperature cooking can be realized. Since the water control assembly 400 is arranged, the water level in the steam generation cavity 11 can be controlled below the preset water level line A, so that low-temperature steam can be quickly generated. Since the lowest part of the steam hole 131 is higher than the preset water level line A, it is ensured that water cannot enter the high-temperature steam cavity 12, so that the heating efficiency of the low-temperature steam by the second heating member 30 is not affected. Since the first heating member 20 is arranged at the bottom of the steam generation cavity 11, the water in the steam generation cavity 11 can prevent heat from being transmitted to the bottom of the cooking cavity 201, so that the high temperature generated by the first heating member 20 does not affect the parts at the bottom of the cooking cavity 201. Meanwhile, since the second heating member 30 is arranged at the bottom of the high-temperature steam cavity 12 and is far away from the cooking cavity 201, the high temperature generated by the second heating member 30 does not affect the parts at the bottom of the cooking cavity 201, so that a heat shield does not need to be added or the heating temperature of the second heating member 30 does not need to be reduced, so that the demand of high-temperature steam cooking can be met and additional cost is not increased.

[0047] It can be understood that the "low-temperature steam" and the "high-temperature steam" are not steam with a specific temperature range. The "low-temperature steam" refers to the steam formed after the water in the steam generation cavity 11 is evaporated. The "high-temperature steam" refers to the steam formed after the "low-temperature steam" is heated by the second heating member 30. Therefore, for the same electric steamer, the temperature of the "high-temperature steam" is higher than that of the "low-temperature steam".

[0048] In this embodiment, the cooking body 200 includes a pot lid 210, and a cooking cavity 201 is formed inside the pot lid 210. A steaming rack 220 can be installed inside the cooking cavity 201 to support the food being steamed. In addition, in other embodiments, the cooking body 200 may also include a steamer 230, with the cooking cavity 201 formed inside the steamer 230, or the steamer 230 and the pot lid 210 enclosing the cooking cavity 201. This application does not limit this, as long as the cooking body 200 has a cooking cavity 201 that can accommodate food.

[0049] The electric steamer may also include a water tray 240, which is disposed between the cooking body 200 and the base 100. The water tray 240 is used to receive the condensate generated in the cooking cavity 201, so as to prevent the condensate from dripping into the high-temperature steam cavity 12 and affecting the heating efficiency of the second heating element 30.

[0050] Furthermore, the bottom wall of the inner cavity of the steam generator 10 is horizontally arranged, and the baffle 13 extends upward from the bottom wall of the inner cavity of the steam generator 10, so that the inner cavity of the steam generator 10 is divided into a steam generating chamber 11 and a high-temperature steam chamber 12, both of which have an upper opening. In this way, the first heating element 20 and the second heating element 30 can be arranged at the same horizontal height, resulting in a very compact structure.

[0051] Furthermore, the steam generator also includes a baffle 14, which connects the upper end of the partition 13 and the upper end of the side wall of the steam generator 10 to seal the upper opening of the steam generating chamber 11. Thus, by setting the baffle 14 to block the rising steam, it ensures that low-temperature steam enters the high-temperature steam chamber 12 from the steam hole 131, is heated into high-temperature steam, and is then output to the cooking chamber 201, guaranteeing the high-temperature steam cooking effect of the electric steamer.

[0052] Of course, in other embodiments (not shown), the bottom wall of the water tray 240 can block the upper opening of the steam generating chamber 11. The water tray 240 is also provided with a steam outlet that connects the high-temperature steam chamber 12 and the cooking chamber 201. Thus, the low-temperature steam in the steam generating chamber 11 cannot be directly output to the cooking chamber 201, but is output to the cooking chamber 201 after passing through the high-temperature steam chamber 12, thus ensuring the high-temperature steam cooking effect of the electric steamer.

[0053] The steam generating chamber 11 is provided with a water inlet 111, and water in the water tank 300 enters the steam generating chamber 11 through the water inlet 111.

[0054] In one embodiment, such as Figures 2 to 5 As shown, the partition 13 is annular, and the steam generating chamber 11 surrounds the outer periphery of the high-temperature steam chamber 12. Thus, the partition 13 has a simple structure, and the water inlet 111 of the steam generating chamber 11 can be set on the side wall of the steam generating chamber 11, thereby facilitating the connection between the steam generating chamber 11 and the water tank 300, and facilitating the water tank 300 to replenish water to the steam generating chamber 11.

[0055] In another embodiment, such as Figures 6 to 8 As shown, the partition 13 is in the shape of a straight line, and the steam generating chamber 11 is located on one side of the high-temperature steam chamber 12. In this way, the partition 13 has a simple structure, and the water inlet 111 of the steam generating chamber 11 can be set on the side wall of the steam generating chamber 11, which facilitates the connection between the steam generating chamber 11 and the water tank 300, and facilitates the water tank 300 to replenish water to the steam generating chamber 11.

[0056] Furthermore, the second heating element 30 is located below the bottom wall of the high-temperature steam chamber 12. In this way, the second heating element 30 is far away from the cooking chamber 201, and the high temperature generated by the second heating element 30 will not affect the components at the bottom of the cooking chamber 201, while meeting the heating requirements of the steam in the high-temperature steam chamber 12.

[0057] Please see Figure 4 and Figure 7 Furthermore, the area of ​​the bottom wall of the steam generating chamber 11 projected onto the horizontal plane is S1, and the area of ​​the bottom wall of the high-temperature steam chamber 12 projected onto the horizontal plane is S2, where 0.3 ≤ S2 / (S1+S2) ≤ 0.8. If S2 / (S1+S2) is too small, the heating range of the second heating element 30 is small, and only a small portion of the low-temperature steam is heated into high-temperature steam, which is insufficient to meet the needs of high-temperature steam cooking. If S2 / (S1+S2) is too large, the low-temperature steam generated by the steam generating chamber 11 is insufficient. Even if all the low-temperature steam is heated into high-temperature steam, the amount of high-temperature steam is small, thus failing to efficiently heat the food. In this embodiment, 0.3 ≤ S2 / (S1+S2) ≤ 0.8, and S2 / (S1+S2) is of a moderate size, which can simultaneously ensure the amount of both low-temperature and high-temperature steam, thereby meeting the needs of high-temperature steam for efficient food cooking.

[0058] Furthermore, there are one or more steam holes 131, and the flow area of ​​a single steam hole 131 is S3, where S3 ≥ 10 mm. 2 Thus, the low-temperature steam in the steam generating chamber 11 can smoothly enter the high-temperature steam chamber 12. The total flow area of ​​all steam holes 131 is S, where S ≥ 100 mm². 2 It can be understood that "the total flow area of ​​steam holes 131" refers to the sum of the cross-sectional areas of steam holes 131 perpendicular to the fluid flow direction. This ensures that sufficient low-temperature steam enters the high-temperature steam chamber 12, thereby facilitating the efficient generation of high-temperature steam.

[0059] The steam vent 131 can be circular, elongated, square, hexagonal, elliptical or any other shape, and this application does not limit it.

[0060] Please see Figure 9 and Figure 10Furthermore, the bottom wall of the high-temperature steam chamber 12 is provided with upwardly extending heat transfer plates 40, which may be one or more. In this way, by setting the heat transfer plates 40, the heat transfer area can be increased, so that the low-temperature steam in the high-temperature steam chamber 12 can be heated more efficiently to form high-temperature steam.

[0061] The thickness of the heat transfer plate 40 is L1. If the thickness L1 of the heat transfer plate 40 is too small, it will be difficult to process; if the thickness L1 of the heat transfer plate 40 is too large, it will lead to more heat loss and poor heat transfer capacity. In one embodiment, L1 = 0.1mm to 3mm, and the thickness L1 of the heat transfer plate 40 is moderate, which can simultaneously have the advantages of simple processing, low heat loss and good heat transfer capacity.

[0062] The spacing between adjacent heat transfer plates 40 is L2. If L2 is too small, steam flow will be difficult; if L2 is too large, the number of heat transfer plates 40 in the limited space needs to be reduced, thus reducing the heat transfer effect. In one embodiment, L2 = 1mm to 10mm. Thus, L2 is of a moderate size, allowing a sufficient number of heat transfer plates 40 to be set in the limited space, thereby ensuring that the heat transfer plates 40 have a good heat transfer effect. At the same time, it can ensure that steam flows smoothly in the gaps between adjacent heat transfer plates 40, so that the heat transfer plates 40 can efficiently transfer heat to low-temperature steam, and the high-temperature steam formed can be smoothly discharged.

[0063] The height of the heat transfer fin 40 is determined based on the structure above the steam generator. As long as the heat transfer fin 40 does not interfere with the structure above (e.g., the water receiving tray 240), the higher the heat transfer fin 40, the better, within the limited height space. In one embodiment, the height of the heat transfer fin 40 is H, where H = 20mm to 100mm. This height range ensures efficient heat transfer from the second heating element 30 to the low-temperature steam, thereby improving the efficiency of generating high-temperature steam.

[0064] like Figure 10 As shown, in one embodiment, the heat transfer plates 40 are arranged in a ring array, and each heat transfer plate 40 is arc-shaped, which is beneficial to steam flow. However, it is not limited to this, and the heat transfer plates 40 can also be arranged in various other ways, which are not limited in this application.

[0065] In one embodiment, the water tank 300 is disposed independently of the base 100. Further, the water tank 300 can be configured as a detachable structure, meaning the water tank 300 is detachably connected to the base 100. Of course, the water tank 300 can also be fixedly installed on the base 100. Additionally, the water tank 300 can also be integrally formed into the base 100; this application does not limit this, as long as the water tank 300 can replenish water to the steam generating chamber 11.

[0066] In an embodiment, the water control assembly 400 is a float valve. The float valve is lifted and lowered by the buoyancy of water, thereby controlling the opening and closing of the water tank 300 and the steam generating cavity 11. Specifically, the float valve is arranged at the water outlet of the water tank 300. When the water level in the steam generating cavity 11 falls below the preset water level line A, the float valve is lowered to a position to open the water outlet, so that the water tank 300 and the steam generating cavity 11 are connected, and the water tank 300 can supply water to the steam generating cavity 11, so that the water level in the steam generating cavity 11 rises. When the water level in the steam generating cavity 11 rises above the preset water level line A, the float valve is raised to a position to close the water outlet, so that the water tank 300 and the steam generating cavity 11 are disconnected, and the water tank 300 cannot supply water to the steam generating cavity 11. The float valve control method is simple, and can keep the water level in the steam generating cavity 11 below the preset water level line A. Of course, the water control assembly 400 can also be a water pump or other structure, as long as it can control the water level and keep the water level in the steam generating cavity 11 below the preset water level line A.

[0067] Further, the distance between the preset water level line A and the bottom wall of the steam generating cavity 11 is H1, and H1≤20mm. In this way, the height of the preset water level line A is not too high, so that the low-temperature steam can be generated quickly.

[0068] Further, the base 100 is provided with a cylindrical steam guide sleeve 110, which is sealingly connected to the upper end of the steam generator 10, and the inside of the steam guide sleeve 110 is connected to the high-temperature steam cavity 12 and the cooking cavity 201. In this way, the steam guide sleeve 110 is equivalent to increasing the capacity of the high-temperature steam cavity 12, which is beneficial to heat more low-temperature steam into high-temperature steam before discharging it into the cooking cavity 201, thereby improving the efficiency of high-temperature steam cooking.

[0069] As described above, in an embodiment, the high-temperature steam cavity 12 is provided with a heat transfer fin 40, and further, the heat transfer fin 40 can extend into the steam guide sleeve 110, so that the heat transfer fin 40 can transfer the heat of the second heating element 30 to the steam guide sleeve 110, thereby facilitating the generation of more high-temperature steam.

[0070] In an embodiment, the steam generator 10 is a metal piece, which has fast heat transfer and is beneficial to quickly generate low-temperature steam and high-temperature steam.

[0071] Further, the steam guide sleeve 110 is a plastic piece. Please refer to Figure 2 The distance between the lower end of the steam guide sleeve 110 and the bottom wall of the high-temperature steam cavity 12 is H2, and H2≥10mm. The steam guide sleeve 110 is a plastic piece, which is beneficial to reduce the production cost. H2≥10mm, so the distance between the steam guide sleeve 110 and the second heating element 30 is large, thereby reducing the requirement for the temperature resistance of the steam guide sleeve 110, and prolonging the service life of the steam guide sleeve 110.

[0072] Further, H2≤ 50mm. In this way, the overall height of the electric steamer will not be too high to cause a large volume, and even affect the appearance of the product. Specifically, H2may be 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, or any other arbitrary value within the range of 10mm-50mm, and the present application does not limit this.

[0073] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments have not been described, however, as long as the combinations of the technical features do not result in contradictions, they shall be considered within the scope of the present disclosure.

[0074] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. An electric steamer characterized by comprising: The electric steamer comprises a base (100), a cooking main body (200) and a water tank (300), the cooking main body (200) is arranged above the base (100), and the cooking main body (200) is provided with a cooking cavity (201), The base (100) is internally provided with a steam generator (10), a first heating element (20) and a second heating element (30), the inner cavity of the steam generator (10) is divided into a steam generation cavity (11) and a high-temperature steam cavity (12) by a partition plate (13), The steam generation cavity (11) and the water tank (300) are communicated through a water control assembly (400), and the water control assembly (400) is used for controlling the water level in the steam generation cavity (11) to be below a preset water level line, The partition plate (13) is provided with a steam hole (131) communicating the steam generation cavity (11) and the high-temperature steam cavity (12), and the lowest part of the steam hole (131) is higher than the preset water level line, The high-temperature steam cavity (12) and the cooking cavity (201) are communicated, The first heating element (20) is arranged at the bottom of the steam generation cavity (11) and is used for heating water in the steam generation cavity (11), and the second heating element (30) is arranged at the bottom of the high-temperature steam cavity (12) and is used for heating steam in the high-temperature steam cavity (12).

2. The electric steamer according to claim 1, wherein The inner cavity bottom wall of the steam generator (10) is horizontally arranged, the partition plate (13) is arranged in extension from the inner cavity bottom wall of the steam generator (10) upwards, so that the inner cavity of the steam generator (10) is divided into the steam generation cavity (11) and the high-temperature steam cavity (12) both having upper openings.

3. The electric steamer according to claim 2, wherein The steam generator (10) is further provided with a baffle (14) connected to the upper end of the partition plate (13) and the upper end of the side wall of the steam generator (10), so as to close the upper opening of the steam generation cavity (11); Alternatively, the electric steamer further comprises a water receiving tray (240), the bottom wall of the water receiving tray (240) blocks the upper opening of the steam generation cavity (11), and the water receiving tray (240) is further provided with a steam outlet communicating the high-temperature steam cavity (12) and the cooking cavity (201).

4. The electric steamer according to claim 2, wherein The partition plate (13) is annular, and the steam generation cavity (11) is arranged around the outer periphery of the high-temperature steam cavity (12). Alternatively, the partition plate (13) is linear, and the steam generation cavity (11) is arranged on one side of the high-temperature steam cavity (12).

5. The electric steamer according to claim 1, wherein, The second heating element (30) is arranged below the bottom wall of the high-temperature steam cavity (12).

6. The electric steamer according to claim 1, wherein The area of the normal projection of the bottom wall of the steam generation cavity (11) on a horizontal plane is S1, the area of the normal projection of the bottom wall of the high-temperature steam cavity (12) on the horizontal plane is S2, and 0.3≤S2 / (S1+S2)≤0.

8.

7. The electric steamer according to claim 1, wherein The steam hole (131) is one or more, and the flow area of a single steam hole (131) is S3, S3≥10mm 2 The total flow area of the steam hole (131) is S, S≥100mm 2 .

8. The electric steamer according to claim 1, wherein The bottom wall of the high-temperature steam cavity (12) is provided with a heat transfer fin (40) extending upwards, and the heat transfer fin (40) is one or more pieces.

9. The electric steamer according to claim 8, wherein, The thickness of the heat transfer fin (40) is L1, and L1=0.1mm-3mm. And / or, the interval of the adjacent heat transfer sheet (40) is L2, L2=1mm-10mm; And / or, the height of the heat transfer sheet (40) is H, H=20mm-100mm.

10. The electric steamer according to claim 1, wherein The base (100) is internally provided with a cylindrical steam guide sleeve (110), the steam guide sleeve (110) is sealingly connected to the upper end of the steam generator (10), and the steam guide sleeve (110) is internally communicated with the high-temperature steam cavity (12) and the cooking cavity (201).

11. The electric steamer according to claim 10, wherein, The steam guide sleeve (110) is a plastic part, and the distance between the lower end of the steam guide sleeve (110) and the bottom wall of the high-temperature steam cavity (12) is H2, H2≥10mm.

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