Steam generator and cooking equipment

Abstract

The utility model discloses a steam generator and cooking equipment, and the steam generator comprises a water storage device which is provided with a steam outlet; the energy gathering piece is arranged in the water storage device, the energy gathering piece divides the interior of the water storage device into a first cavity and a second cavity which are communicated with each other, the first cavity is arranged on the outer side of the second cavity, and the second cavity is communicated with the steam outlet; the first heating part and the second heating part are arranged in the second cavity, the first heating part and the second heating part are arranged in a spaced mode in the flowing direction of steam, and the second heating part is located on the side, close to the steam outlet, of the first heating part; wherein the second heating part is in a disc shape, and at least two through holes are formed in the second heating part.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cooking utensils, and particularly relates to a steam generator and a cooking device. BACKGROUND

[0002] With the development of society, the cooking demand of steamers is also increasing, but the steam temperature generated by the machine body often cannot exceed 100 DEG C, the heating efficiency is low, and the cooking speed is slow. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a steam generator and a cooking device, which can generate high-temperature steam, has high heating efficiency, and improves the cooking speed.

[0004] In a first aspect, the present application provides a steam generator, comprising:

[0005] A water accumulator, which is provided with a steam outlet;

[0006] An energy-concentrating piece, which is arranged in the water accumulator and separates the water accumulator into a first cavity and a second cavity in communication, the first cavity is arranged outside the second cavity, and the second cavity is in communication with the steam outlet;

[0007] A first heating part and a second heating part, which are arranged in the second cavity, the first heating part and the second heating part are arranged at intervals along the flow direction of the steam, and the second heating part is located on the side of the first heating part close to the steam outlet;

[0008] The second heating part is disc-shaped, and the second heating part is provided with at least two through holes.

[0009] According to the steam generator of the present application, the energy-concentrating piece is arranged to reduce the amount of heated water of the energy-concentrating piece, so as to improve the efficiency of steam generation. The first heating part and the second heating part are arranged, the first heating part heats the water in the second cavity to quickly generate steam, the steam flows through the second heating part for further heating to further improve the temperature of the steam, the second heating part is disc-shaped to improve the heating efficiency of the secondary heating of the steam, and finally the temperature of the output steam exceeds 100 DEG C, so as to improve the cooking speed and meet the cooking demand of part of the food materials.

[0010] According to an embodiment of the present application, the top of the water accumulator is provided with a steam outlet, the first heating part is arranged at the bottom of the second cavity, and the second heating part is arranged above the highest water level line of the water accumulator.

[0011] According to an embodiment of the present application, the second heating part is gap-fitted with the inner wall of the second cavity, and the distance between the second heating part and the inner wall of the second cavity is less than the radius of the second heating part.

[0012] According to an embodiment of the present application, the second heating part is spaced apart from the steam outlet.

[0013] According to an embodiment of the present application, a sleeve is arranged in the through hole, and at least part of the sleeve protrudes above the second heating part.

[0014] According to an embodiment of the present application, the steam generator further comprises a heating member, the heating member being connected to the first heating part and the second heating part.

[0015] According to an embodiment of the present application, the steam generator further comprises a connecting member, the connecting member being connected between the first heating part and the second heating part, and the heating member being arranged in the connecting member.

[0016] According to an embodiment of the present application, the bottom wall of the water accumulator is provided with a mounting hole, the first heating part extends in the horizontal direction and is sealingly mounted in the mounting hole, and the connecting end of the heating member passes through the mounting hole to the outside of the water accumulator.

[0017] According to an embodiment of the present application, the peripheral side of the first heating part is provided with a bent edge, and at least part of the bent edge is below the bottom wall of the water accumulator.

[0018] According to an embodiment of the present application, the energy concentrating member is annular, the energy concentrating member is connected to the bottom wall of the water accumulator and is spaced apart from the side wall of the water accumulator, the inner side of the energy concentrating member defines a second cavity, and at least part of the lower end of the energy concentrating member is spaced apart from the bottom wall of the water accumulator.

[0019] According to an embodiment of the present application, the energy concentrating member is an annular groove with an opening downward, at least one of the inner side wall and the outer side wall of the energy concentrating member is connected to the bottom wall of the water accumulator, and at least part of the inner side wall and the outer side wall are spaced apart from the bottom wall of the water accumulator to form a water passing channel.

[0020] According to an embodiment of the present application, the bottom wall of the water accumulator is provided with a positioning groove, and the bottom of the energy concentrating member is matched with the positioning groove.

[0021] In a second aspect, the present application provides a cooking device, which comprises:

[0022] a machine body;

[0023] a steam generator as in any of the first aspects, mounted in the machine body;

[0024] a steamer mounted in the machine body, the steamer having a cooking cavity, the cooking cavity being in communication with the steam outlet.

[0025] The cooking device provided in the second aspect of the present application has the same beneficial effects as the steam generator provided in the first aspect of the present application, which will not be repeated here.

[0026] Additional aspects and advantages of the present application will be made apparent from the following description, which, when taken in conjunction with the accompanying drawings, whores: BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood by considering the following description, in conjunction with the accompanying drawings, in which:

[0028] Figure 1 is a schematic view of a cross-sectional structure of a cooking apparatus provided by an embodiment of the present application;

[0029] Figure 2 is a schematic view of a cross-sectional structure of a steam generator provided by an embodiment of the present application;

[0030] Figure 3 is a schematic view of an exploded structure of a first heating member, a second heating member, a connecting member and a heating member provided by an embodiment of the present application;

[0031] Figure 4 is Figure 1 is an enlarged view of A in FIG. 10.

[0032] REFERENCE NUMERALS:

[0033] 1000, cooking apparatus; 100, body; 200, steamer; 210, cooking cavity;

[0034] 300, steam generator; 310, water accumulator; 311, first cavity; 312, second cavity; 313, steam outlet; 314, mounting hole; 315, positioning groove; 320, energy focusing member; 321, inner side wall; 3211, notch; 322, outer side wall; 330, first heating portion; 331, bent edge; 340, second heating portion; 341, through hole; 342, sleeve; 350, heating member; 360, connecting member. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described below in detail with reference to the accompanying drawings, in which like or similar elements are denoted by the same or similar reference numerals, and the embodiments described below are examples for explaining the present application, and should not be construed as limiting the present application.

[0036] Reference is made to Figures 1-4 A steam generator and a cooking apparatus according to embodiments of the present application are described below.

[0037] Reference is made to Figure 1 and Figure 2This application provides a steam generator 300, which includes a water storage tank 310, an energy-concentrating element 320, a first heating element 330, and a second heating element 340.

[0038] The water reservoir 310 has a steam outlet 313. An energy-concentrating element 320 is disposed within the water reservoir 310, dividing the reservoir 310 into a first cavity 311 and a second cavity 312 that communicate with each other. The first cavity 311 is located outside the second cavity 312, and the second cavity 312 communicates with the steam outlet 313. A first heating element 330 and a second heating element 340 are disposed within the second cavity 312, spaced apart along the steam flow direction, with the second heating element 340 located on the side of the first heating element 330 closer to the steam outlet 313. The second heating element 340 is disc-shaped and has at least two through holes.

[0039] The 310 water storage tank can be made of stainless steel, which has excellent high-temperature resistance and corrosion resistance, enabling it to operate stably in long-term high-temperature steam environments and extending the equipment's service life. Besides stainless steel, high-temperature resistant engineering plastics, such as polyetheretherketone (PEEK), or aluminum alloys can also be used, effectively reducing the overall weight of the equipment and facilitating heat dissipation.

[0040] In one example, the water reservoir 310 can be rectangular, as the internal space of a cuboid is more efficient, allowing it to store a larger amount of water to meet cooking water needs for a certain period of time. In other examples, the water reservoir 310 can be square, cylindrical, etc., without any specific limitation.

[0041] The water storage tank 310 is provided with a steam outlet 313 to allow the steam generated inside the water storage tank 310 to be discharged quickly. The size, location and number of the steam outlet 313 are not limited.

[0042] The energy-concentrating component 320 primarily functions as a water barrier. It divides the water reservoir 310 into a first chamber 311 and a second chamber 312. The first chamber 311 surrounds the outside of the second chamber 312, and the two chambers are interconnected to ensure free water flow between them while maintaining a moderate flow rate that does not affect steam generation efficiency. The second chamber 312 is directly connected to the steam outlet 313. This structure, while ensuring sufficient water volume within the water reservoir 310, reduces the amount of water used for heating, allowing the water in the second chamber 312 to be heated more quickly to generate steam, thereby improving steam generation efficiency. In some examples, the energy-concentrating component 320 can be made of high-strength, water-resistant plastic materials, such as polypropylene (PP), which is cost-effective and meets the water barrier requirement.

[0043] The first heating part 330 and the second heating part 340 can both output heat to heat the environment or medium around them. The first heating part 330 and the second heating part 340 are arranged in the second cavity 312 in the flow direction of the steam, and the second heating part 340 is located on the side of the first heating part 330 close to the steam outlet 313. The water in the second cavity 312 is rapidly heated by the first heating part 330 first, so that the water rapidly boils to generate steam. The generated steam passes through the second heating part 340 in the process of flowing to the steam outlet 313, and the second heating part 340 further heats the steam, so that the temperature of the steam can be stably above 100℃. For example, the temperature of the steam can reach 100℃-130℃, which meets the demand of high-temperature cooking. In actual implementation, for some food materials that need to be cooked quickly and keep fresh taste, such as seafood, high-temperature steam can cook them to the best state in a short time, which not only retains the nutritional ingredients of the food materials, but also improves the taste.

[0044] The second heating part 340 is disc-shaped, so that the steam can uniformly contact the second heating part 340 in the flow process. The second heating part 340 is provided with at least two through holes 341, which ensure the passability of the steam and increase the contact area between the steam and the second heating part 340. The through holes 341 are uniformly distributed on the second heating part 340, which facilitates the smooth passage of the steam through the second heating part 340 and ensures the structural strength of the second heating part 340.

[0045] The second heating part 340 can be provided with a plurality of through holes 341. The number of the through holes 341 can be two, three, four or more, and the specific number is not limited.

[0046] According to the steam generator 300 provided by the embodiments of the present application, the energy concentrating part 320 is arranged to reduce the amount of heated water of the energy concentrating part 320, so as to improve the efficiency of steam generation. The first heating part 330 and the second heating part 340 are arranged, the first heating part 330 heats the water in the second cavity 312 to rapidly generate steam, and the steam flows through the second heating part 340 for further heating to further improve the temperature of the steam. The second heating part 340 is disc-shaped to improve the heating efficiency of the secondary heating of the steam. Finally, the temperature of the output steam exceeds 100℃, so as to improve the cooking speed and meet the cooking demand of some food materials.

[0047] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, the top of the water accumulator 310 can be provided with a steam outlet 313, the first heating part 330 can be arranged at the bottom of the second cavity 312, and the second heating part 340 can be arranged above the highest water level line of the water accumulator 310.

[0048] The top of the water accumulator 310 is provided with a steam outlet 313. Since steam has the characteristic of natural upward movement, arranging the steam outlet 313 at the top can make the generated steam more smoothly discharged, avoiding problems such as pressure imbalance caused by steam accumulation inside the water accumulator 310. At the same time, the design of the top opening is conducive to the direct entry of steam into subsequent cooking equipment 1000 and other application scenarios, reducing heat loss during steam transmission. The edge of the steam outlet 313 is specially polished to make it smoother, further reducing the resistance when the steam is discharged.

[0049] The first heating part 330 is arranged at the bottom of the second cavity 312. Such a layout can make the first heating part 330 fully contact with water, heat from the bottom to the top, conform to the natural law of heat transfer, and make the water more efficiently absorb heat and quickly boil to generate steam.

[0050] The second heating part 340 is arranged above the first heating part 330, and the second heating part 340 is above the highest water level line, that is, the second heating part 340 is always above the liquid level of the second cavity 312, ensuring that the heat of the second heating part 340 fully acts on the steam, avoiding the second heating part 340 participating in the heating of the water, affecting the heating effect of the steam. When the steam generated by the first heating part 330 rises, it will directly pass through the second heating part 340. Through this layout, secondary heating is achieved by using the natural upward movement of the steam, without the need to set up additional power devices, improving the energy utilization efficiency and better meeting the demand for high-temperature cooking.

[0051] Please refer to Figure 2 and Figure 3 According to some embodiments of the present application, the second heating part 340 can extend in the horizontal direction.

[0052] The second heating part 340 can be a disc-shaped structure extending in the horizontal direction, so that the steam can more uniformly contact the second heating part 340 during the rising process. It should be understood that the extension in the horizontal direction here is not limited to the second heating part 340 being completely horizontal, but also covers the case where the second heating part 340 forms a certain angle with the horizontal direction.

[0053] In an example, in the case where the second heating part 340 forms a certain angle with the direction of steam rising, the steam can contact the second heating part 340 in a larger area during the flow process, ensuring that the steam can be fully heated again.

[0054] Please refer to Figure 1 and Figure 2According to some embodiments of the present application, the second heating portion 340 is in clearance fit with the inner wall of the second cavity 312, and the clearance between the second heating portion 340 and the inner wall of the second cavity 312 is less than the radius of the second heating portion 340.

[0055] By setting the second heating portion 340 in clearance fit with the inner wall of the second cavity 312, the assembly of the second heating portion 340 in the second cavity 312 is facilitated, the interference in the assembly process is reduced, the assembly precision is improved, and the machining precision requirement is reduced, thereby reducing the production cost.

[0056] In particular, the clearance between the second heating portion 340 and the inner wall of the second cavity 312 can be less than the radius of the second heating portion 340, so as to facilitate the steam to flow through the through hole 341 under the action of flow resistance, so that the steam is in full contact with the second heating portion 340, and the heating efficiency and heating effect are improved.

[0057] In some other embodiments, the second heating portion 340 can also be directly connected with the inner wall of the second cavity 312, so that the steam can only flow through the through hole 341 to the other side of the second heating portion 340.

[0058] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, the second heating portion 340 can be spaced apart from the steam outlet 313.

[0059] The second heating portion 340 can be spaced apart from the steam outlet 313, that is, the second heating portion 340 is located between the first heating portion 330 and the steam outlet 313, that is, the second heating portion 340 is located inside the second cavity 312. Thus, after the steam passes through the second heating portion 340, the inner wall of the second cavity 312 plays a role of gathering the steam, so that the steam is concentrated and uniformly distributed, and the temperature is more uniform when the steam flows out of the steam outlet 313, thereby improving the cooking effect.

[0060] In some other embodiments, the second heating portion 340 can also be provided at the steam outlet 313.

[0061] Please refer to Figure 2 and Figure 3 The through hole 341 can be provided with a sleeve 342, and at least part of the sleeve 342 can protrude above the second heating portion 340.

[0062] A sleeve 342 is arranged in each through hole 341, and at least a portion of the sleeve 342 protrudes above the second heating portion 340. The sleeve 342 can be made of a metal material with good thermal conductivity, such as stainless steel. By arranging the sleeve 342, the heating area of the steam can be significantly increased. When the steam rises through the through hole 341, it enters the interior of the sleeve 342, forming a relatively closed space in the sleeve 342. The steam stays in the sleeve 342 for a longer time, thereby increasing the contact time with the heating element, so that the steam can more fully absorb heat, and the temperature can more stably exceed 100°C, better meeting the requirements of high-temperature cooking on the temperature of the steam.

[0063] To ensure that the sleeve 342 and the second heating portion 340 are firmly connected, in some examples, the sleeve 342 and the second heating portion 340 can be integrally formed. In other examples, welding or a tight fit can be used at the connection between the sleeve 342 and the through hole 341. The sleeve 342 can be firmly mounted on the second heating portion 340 and will not fall off due to the impact of the steam.

[0064] In some embodiments, the first heating portion 330 and the second heating portion 340 can each be an independent heating unit and be powered separately, thereby facilitating adjustment of the output power of the first heating portion 330 and the second heating portion 340 and facilitating separate adjustment of the temperature of the first heating portion 330 and the second heating portion 340.

[0065] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, the steam generator 300 can further include a heating element 350 connected to the first heating portion 330 and the second heating portion 340.

[0066] The heating element 350 serves as a heat source for the entire steam generator 300. For example, the heating element 350 is designed using PTC (Positive Temperature Coefficient) thermistor material. The PTC heating element 350 has the characteristics of automatic constant temperature, no open flame, safety, and reliability. When powered on, the PTC heating element 350 can quickly heat up, and as the temperature rises, the resistance value will rapidly increase, thereby automatically adjusting the heating power to keep the temperature within a relatively stable range. This feature effectively avoids safety hazards caused by overheating, while also ensuring that the first heating portion 330 and the second heating portion 340 are continuously and stably heated.

[0067] The heating element 350 can be connected to an external power source through a high-temperature-resistant wire, and special insulation and sealing treatment is performed at the connection between the wire and the heating element 350 to prevent short circuits and other safety problems in a high-temperature environment.

[0068] The first heating part 330 and the second heating part 340 mainly play a role of heat conduction, and are made of a metal material with high thermal conductivity, such as copper alloy, and can quickly transfer the heat generated by the heating element 350 to the surrounding water and steam.

[0069] The connection mode of the heating element 350 and the first heating part 330 and the second heating part 340 adopts a closely fitted mode. In some examples, a special groove can be provided in the first heating part 330 and the second heating part 340, and the corresponding part of the heating element 350 can be closely embedded in the groove, so as to ensure that the heat can be efficiently transferred. In order to further enhance the heat conduction effect, a layer of heat-conducting silicone grease is applied on the contact surface of the heating element 350 and the first and second heating parts, and the heat-conducting silicone grease can fill the tiny gaps, reduce the thermal resistance, and improve the heat transfer efficiency.

[0070] In actual implementation, by connecting the first heating part 330 and the second heating part 340 through the heating element 350, the number of electrical components of the entire steam generator 300 is reduced, and the structure is more simple. The heat generated by the heating element 350 can be quickly transferred to the first heating part 330 and the second heating part 340, the first heating part 330 heats the water in the second cavity 312 to generate steam, the steam is heated again by the second heating part 340 during the ascending process, and finally discharged from the steam outlet 313 at the top of the water reservoir 310. Not only the steam generation efficiency and temperature are improved, but also the cost and maintenance difficulty of the equipment are reduced, and the overall performance and reliability of the steam generator 300 are improved.

[0071] Please refer to Figure 2 and Figure 3 According to some embodiments of the present application, the steam generator 300 can further include a connecting piece 360, the connecting piece 360 can be connected between the first heating part 330 and the second heating part 340, and the heating element 350 can be arranged in the connecting piece 360.

[0072] The connecting piece 360 can be made of a material with high temperature resistance and high thermal conductivity, which can not only withstand high temperature environment, but also has sufficient strength to ensure that the connecting piece 360 will not be deformed, damaged or the like due to high temperature or external force during the working process of the steam generator 300, so as to stably connect the first heating part 330 and the second heating part 340.

[0073] The connecting piece 360 can be firmly connected with the first heating part 330 and the second heating part 340 by welding, threaded connection or clamping, etc.

[0074] The heating element 350 is arranged inside the connecting element 360, and a special accommodating cavity is arranged inside the connecting element 360. The heating element 350 is tightly arranged in the accommodating cavity, so that the heat generated by the heating element 350 can be quickly and uniformly transmitted to the connecting element 360, and then transmitted to the first heating part 330 and the second heating part 340. At the same time, the connecting element 360 also plays a role in protecting the heating element 350. The heating element 350 is connected to an external power supply through a high-temperature-resistant lead wire. The lead wire is led out from the side of the connecting element 360, and strict sealing and insulation treatment is performed at the connection between the lead wire and the connecting element 360, so as to prevent safety problems such as short circuit and electric leakage in a high-temperature and humid environment.

[0075] In an example, the connecting element 360 is made of the same material as the first heating part 330 and the second heating part 340. The connecting element 360, the first heating part 330 and the second heating part 340 can be integrally formed, thereby reducing the number of parts of the entire steam generator 100, greatly improving the assembly and production efficiency, improving the assembly precision, and improving the product quality. In addition, the integral molding reduces the part gap, has good sealing performance, can better protect the heating element 350 in the connecting element 360, and the heating element 350 can also be directly formed in the connecting element 360 through the integral molding process in the production process, thereby further improving the production efficiency and improving the installation stability of the heating element 350.

[0076] The shape of the connecting element 360 is not limited, and can be block-shaped or plate-shaped, and can be arranged according to the shape of the heating element. In an example, the heating element is a PTC heating element with a trapezoidal overall shape, and the connecting element 360 is also trapezoidal.

[0077] Please refer to Figure 1 , Figure 2 and Figure 4 According to some embodiments of the present application, the bottom wall of the water reservoir 310 can be provided with a mounting hole 314, and the first heating part 330 can be sealed and arranged in the mounting hole 314 in the horizontal direction. The connecting end of the heating element 350 can pass through the mounting hole 314 to the outside of the water reservoir 310.

[0078] The bottom wall of the water reservoir 310 can be provided with a mounting hole 314, and the shape and size of the mounting hole 314 are matched with the first heating part 330. The first heating part 330 can be a disc-shaped part extending in the horizontal direction. After the edge part is sealed by a special sealing material, the first heating part 330 is tightly arranged in the mounting hole 314. For example, a high-temperature-resistant rubber sealing ring is sleeved on the edge of the first heating part 330, and then the first heating part 330 is embedded in the mounting hole 314. By extruding the rubber sealing ring, a good sealing effect is achieved, so as to prevent water from leaking from the mounting hole 314.

[0079] In some examples, the surface of the first heating part 330 can be specially treated, such as increasing some heat dissipation fins, further increasing the contact area with water, and improving the heating efficiency.

[0080] The connecting end of the heating element 350 passes through the mounting hole 314 to the outside of the water reservoir 310, so as to be connected with an external power source. The heating element 350 and the connecting element 360 can be arranged at the central position of the first heating part 330. Since the peripheral edge of the first heating part 330 is sealingly connected with the mounting hole 314, the connecting end of the heating element 350 can directly extend out of the bottom of the first heating part 330, and the risk of short circuit of the connecting end of the heating element 350 due to moisture can be avoided. The waterproof treatment of the connecting end of the heating element 350 is simplified, and the potential failure caused by improper waterproof treatment is reduced. At the same time, the heating element 350 is arranged at the central position of the first heating part 330, so that the heat can be more uniformly transmitted to the surrounding, and the heating effect of the first heating part 330 on water is more balanced.

[0081] Please refer to Figure 3 and Figure 4 According to some embodiments of the present application, the peripheral side of the first heating part 330 can be provided with a bent edge 331, and at least part of the bent edge 331 can be located below the bottom wall of the water reservoir 310.

[0082] The peripheral side of the first heating part 330 can be provided with a bent edge 331, and the bent edge 331 enhances the connection stability and sealing between the first heating part 330 and the water reservoir 310. The bent edge 331 is made of the same metal material as the first heating part 330 and is integrally formed on the peripheral side of the first heating part 330 by stamping or forging process.

[0083] At least part of the bent edge 331 is located below the bottom wall of the water reservoir 310, which can play the role of a reinforcing rib, increase the support strength of the first heating part 330 at the mounting hole 314, and prevent the first heating part 330 from being deformed or displaced due to the long-term pressure of water and thermal expansion and contraction. The part of the bent edge 331 located below the bottom wall of the water reservoir 310 can be further fixed to the bottom wall of the water reservoir 310 by welding or bolt connection. If welding is used, high-temperature resistant welding material is selected to ensure the firmness of the connection; if bolt connection is used, threaded holes are provided at the corresponding positions of the bent edge 331 and the bottom wall of the water reservoir 310, and the bolt is tightened. This way is convenient for later disassembly and maintenance.

[0084] Please refer to Figure 1 and Figure 2According to some embodiments of the present application, the energy focusing piece 320 can be annular, the inner side of the energy focusing piece 320 is connected to the bottom wall of the water reservoir 310 and spaced from the side wall of the water reservoir 310, and at least part of the lower end of the energy focusing piece 320 is spaced from the bottom wall of the water reservoir 310.

[0085] The energy focusing piece 320 is annular, which can effectively divide the internal space of the water reservoir 310 to form a specific cavity structure. The energy focusing piece 320 is connected to the bottom wall of the water reservoir 310, which ensures the stability of the installation and prevents the energy focusing piece 320 from shifting. The energy focusing piece 320 is spaced from the side wall of the water reservoir 310, which is conducive to the flow and circulation of water between the first cavity 311 and the second cavity 312.

[0086] The inner side of the energy focusing piece 320 defines the second cavity 312, which is directly connected to the steam outlet 313 and is the main passage for steam generation and outflow. The first heating part 330 and the second heating part 340 are arranged in the second cavity 312 to heat water and steam.

[0087] At least part of the lower end of the energy focusing piece 320 is spaced from the bottom wall of the water reservoir 310, which forms a passage for water to flow between the two cavities, so that water can naturally flow between the first cavity 311 and the second cavity 312, ensuring that the amount of water in the second cavity 312 is relatively stable, which is conducive to the first heating part 330 quickly heating water to generate steam and improving the efficiency of steam generation. Specifically, the lower end of the energy focusing piece 320 is provided with at least one notch 3211, which ensures the stable connection of the energy focusing piece 320 with the water reservoir 310 while facilitating the flow of water.

[0088] In actual application, the annular structure of the energy focusing piece 320 can also have different variants. For example, the cross section of the annular shape can be designed as a trapezoidal shape, and the cross-sectional area near the steam outlet 313 is larger, which facilitates the timely diffusion of steam after being discharged from the steam outlet 313 to fill the cooking cavity 210 and improves the cooking efficiency.

[0089] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, the energy focusing piece 320 can be an annular groove with the opening facing downward, at least one of the inner side wall 321 and the outer side wall 322 of the energy focusing piece 320 is connected to the bottom wall of the water reservoir 310, and both the inner side wall 321 and the outer side wall 322 have at least part spaced from the bottom wall of the water reservoir 310 to form a water passage.

[0090] The energy gathering piece 320 is a downwardly open annular groove, which is invertedly buckled on the bottom wall of the water reservoir 310. The inner side wall 321 of the energy gathering piece 320 defines a second cavity 312, and the outer side wall 322 of the energy gathering piece 320 and the side wall of the water reservoir 310 define a first cavity 311. After water is added into the water reservoir 310, the water in the first cavity 311 can pass through the water passage and enter the second cavity 312. The lower ends of the inner side wall 321 and the outer side wall 322 of the energy gathering piece 320 are in contact with the water, and a sealed space for preventing steam from escaping is formed in the annular groove.

[0091] It can be understood that, after the steam generated in the second cavity 312 is discharged from the steam outlet 313, most of the steam will enter the cooking cavity 210, and part of the steam will still leak to other areas of the water reservoir 310, reducing the utilization rate of the steam. By arranging the energy gathering piece 320 in the form of an annular groove to form a sealed space, the volume of the water reservoir 310 except the second cavity 312 is compressed, the leakage of steam is reduced, the utilization rate of steam is improved, and the cooking efficiency is improved.

[0092] In an example, the lower end of the outer side wall 322 of the energy gathering piece 320 is completely spaced apart from the bottom wall of the water reservoir 310, and the lower end of the inner side wall 321 of the energy gathering piece 320 is provided with a gap 3211 to form a water passage.

[0093] Please refer to Figure 1 , Figure 2 and Figure 4 According to some embodiments of the present application, the bottom wall of the water reservoir 310 can be provided with a positioning groove 315, and the bottom of the energy gathering piece 320 can be matched with the positioning groove 315.

[0094] The bottom wall of the water reservoir 310 is provided with a positioning groove 315, and the shape and size of the positioning groove 315 are matched with the bottom of the energy gathering piece 320. The bottom of the energy gathering piece 320 can be stably embedded in the positioning groove 315, and the installation and disassembly are facilitated. The bottom of the energy gathering piece 320 is matched and installed with the positioning groove 315. The bottom of the energy gathering piece 320 can be designed as a structure complementary to the shape of the positioning groove 315, for example, the positioning groove 315 is annular, and the corresponding position of the bottom of the energy gathering piece 320 is designed as an annular protrusion. This matching mode makes the installation of the energy gathering piece 320 in the water reservoir 310 more stable, and can accurately separate the water reservoir 310 into the first cavity 311 and the second cavity 312, so as to ensure that the water circulation and the steam generation are carried out according to the designed path.

[0095] The positioning groove 315 can be formed on the bottom wall of the water reservoir 310 by die stamping or mechanical processing. In an example, the periphery of the mounting hole 314 of the bottom of the water reservoir 310 is in a stepped shape, the inner periphery of the mounting hole 314 is matched with the bent edge 331 of the first heating part 330, and the positioning groove 315 is defined together.

[0096] Referring to Figure 1 The embodiment of the present application also provides a cooking device 1000.

[0097] The cooking device 1000 can be an electric steamer 200, or a steam oven, etc., and is not specifically limited.

[0098] The cooking device 1000 comprises a body 100, a steam generator 300 and a steamer 200.

[0099] The steam generator 300 is the steam generator 300 in any of the above technical solutions, the steam generator 300 is installed in the body 100, the steamer 200 is installed on the body 100, and the steamer 200 has a cooking cavity 210, which is in communication with the steam outlet 313.

[0100] The water accumulator 310 is arranged in the body 100, the steamer 200 is installed on the body 100 and in communication with the steam outlet 313 of the water accumulator 310, so that the cooking cavity 210 is in communication with the steam outlet 313, and the steam discharged from the steam outlet 313 can quickly enter the cooking cavity 210 and diffuse. One or more cooking cavities 210 can be arranged in the steamer 200, and different food materials can be cooked at the same time by arranging multiple cooking cavities 210.

[0101] It can be understood that the cooking device 1000 provided by the embodiment of the present application comprises the steam generator 300 in any of the above technical solutions, and has the technical features and beneficial effects of the steam generator 300 in any of the above technical solutions, which will not be described here.

[0102] According to the cooking device 1000 provided by the embodiment of the present application, the steam generator 300 is arranged to improve the cooking speed and meet the cooking requirements of some food materials.

[0103] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in an "or" relationship.

[0104] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0105] In the description of the application, "first feature" and "second feature" can include one or more of the features.

[0106] In the description of the application, "a plurality of" means two or more.

[0107] In the description of the application, "above" or "below" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them.

[0108] In the description of the application, "above", "over" and "on" the first feature of the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0109] In the description of the application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0110] Although embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A steam generator, characterized by, The steam generator comprises: a water accumulator provided with a steam outlet; a concentrator arranged in the water accumulator, which divides the water accumulator into a first cavity and a second cavity in communication, the first cavity is arranged outside the second cavity, and the second cavity is in communication with the steam outlet; a first heating part and a second heating part arranged in the second cavity, the first heating part and the second heating part are arranged in the flow direction of steam, and the second heating part is located on the side of the first heating part close to the steam outlet; wherein the second heating part is disc-shaped, and at least two through holes are arranged on the second heating part.

2. The steam generator of claim 1, wherein The top of the water accumulator is provided with a steam outlet, the first heating part is arranged at the bottom of the second cavity, and the second heating part is arranged above the highest water level line of the water accumulator.

3. The steam generator of claim 2, wherein, The second heating part is in clearance fit with the inner wall of the second cavity, and the distance between the second heating part and the inner wall of the second cavity is less than the radius of the second heating part.

4. The steam generator of claim 2, wherein The second heating part is arranged in clearance with the steam outlet.

5. The steam generator according to any one of claims 1-4, characterized in that, A sleeve is arranged in the through hole, and at least part of the sleeve protrudes above the second heating part.

6. The steam generator according to any one of claims 1 to 4, characterized in that Further comprising a heating part connected to the first heating part and the second heating part.

7. The steam generator of claim 6, wherein Further comprising a connecting part connected between the first heating part and the second heating part, and the heating part is arranged in the connecting part.

8. The steam generator of claim 6, wherein The bottom wall of the water accumulator is provided with a mounting hole, the first heating part is arranged in the mounting hole in a sealed manner along the horizontal direction, and the connecting end of the heating part passes through the mounting hole to the outside of the water accumulator.

9. The steam generator of claim 8, wherein, The first heating part is provided with a bent edge on the side, and at least part of the bent edge is located below the bottom wall of the water accumulator.

10. The steam generator according to any one of claims 2-4, wherein The concentrator is annular, and the concentrator is connected to the bottom wall of the water accumulator and spaced from the side wall of the water accumulator, the inner side of the concentrator defines the second cavity, and at least part of the lower end of the concentrator is spaced from the bottom wall of the water accumulator.

11. The steam generator of claim 10, wherein The concentrator is an annular groove with the opening downward, at least one of the inner side wall and the outer side wall of the concentrator is connected to the bottom wall of the water accumulator, and at least part of the inner side wall and the outer side wall are spaced from the bottom wall of the water accumulator to form a water passage.

12. The steam generator of claim 10, wherein, The bottom wall of the water accumulator is provided with a positioning groove, and the bottom of the concentrator is matched with the positioning groove.

13. A cooking apparatus, characterized by, The steam generator comprises: a machine body; a steam generator according to any one of claims 1-12, which is arranged in the machine body; a steamer arranged in the machine body, the steamer has a cooking cavity in communication with the steam outlet.

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