Instant heating type steam generator of steaming oven and steaming oven

Abstract

The utility model discloses an instant heating type steam generator of a steaming oven and the steaming oven. The instant heating type steam generator comprises a box body, a plurality of heating block elements, a separator and a box cover, a steam outlet is formed in the box cover, the box cover is fixedly connected with the box body, and a water storage cavity is formed in the box cover; the isolation piece is located in the water storage cavity and comprises a plurality of isolation cylinders with openings in the upper portion and the lower portion, each isolation cylinder is internally provided with at least one heating block element, and the heating block elements and the isolation cylinders form independent steam generation cavities; and a water inlet is arranged at the bottom of the isolation cylinder or between the isolation cylinder and the inner bottom of the box body. Through cooperation of the independent steam generating cavity and the multiple heating blocks, efficient, stable and instant-heating steam output is achieved.

Description

Technical Field

[0001] This utility model relates to the field of steam oven technology, and in particular to an instant steam generator and a steam oven. Background Technology

[0002] Steam ovens, as kitchen appliances that integrate steam cooking and baking functions, combine a steam generation system and a baking heating system to achieve multiple cooking modes such as steaming, baking, and combined cooking, significantly improving the versatility of cooking functions. In steam operation mode, existing technologies typically use a dedicated steam generator as the steam source. Its basic working principle is to heat the water in the water storage chamber as a whole through a built-in heating element. When the water reaches the boiling temperature, steam is generated, and then the hot steam is introduced into the cooking chamber through a delivery pipe to complete the steaming of food.

[0003] However, the current steam generator design has significant technical flaws: First, traditional structures require all the water in the storage chamber to be heated to boiling before effective steam can be generated. This not only requires a long preheating time but also significantly increases energy consumption. Second, due to the phase change process of the entire water in the storage chamber, steam generation is significantly delayed, extending the time required for the cooking cavity to reach its operating temperature, thus affecting the initial heating uniformity of the food. Third, repeatedly heating large amounts of water easily leads to energy waste, especially in intermittent cooking scenarios, and also accelerates the aging process of the heating elements. These technical flaws not only reduce the energy efficiency rating of the equipment but also directly affect the user experience, especially in scenarios requiring rapid steam startup. Existing technologies struggle to meet the urgent needs of modern kitchens for highly efficient and energy-saving cookware. Utility Model Content

[0004] The purpose of this utility model is to provide an instant steam generator and a steam oven, which adopts an independent steam generation chamber and multiple heating blocks in synergy to achieve efficient, stable and instant steam output.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] An instantaneous steam generator for a steam oven includes a housing, multiple heating elements, an insulating component, and a lid.

[0007] The lid is provided with a steam outlet, and the lid is fixedly connected to the box body, forming a water storage cavity inside.

[0008] The isolation element is located inside the water storage chamber. The isolation element includes multiple isolation cylinders with openings at the top and bottom. Each isolation cylinder contains at least one heating block element, so that the heating block element and the isolation cylinder form an independent steam generating chamber.

[0009] The bottom of the isolation cylinder or between the isolation cylinder and the bottom of the box body has a water inlet, so that the water level in the steam generating chamber and the water storage chamber are kept consistent.

[0010] Preferably, the bottom plate of the box body is provided with mounting holes, and the heating block element extends upward into the water storage cavity through the mounting holes. The heating block element includes an aluminum heating block and a stainless steel shell. The aluminum heating block and the stainless steel shell are tightly fitted and welded together. The stainless steel shell is sealed to the bottom plate of the box body, so that only the stainless steel shell is in contact with the water in the water storage cavity.

[0011] Preferably, the lower part of the stainless steel outer shell extends into the mounting hole, and a sealing ring is provided between the stainless steel outer shell and the wall of the mounting hole.

[0012] Preferably, the inner ring of the sealing ring is tightly fitted to the stainless steel shell, the outer ring of the sealing ring is provided with an annular groove, and the edge of the mounting hole of the bottom plate of the box is embedded in the annular groove.

[0013] Preferably, the side of the box is provided with a water inlet pipe and a water outlet pipe, and / or the lowest point of the bottom of the box is provided with a sewage drain pipe.

[0014] Preferably, the cover is provided with a mounting groove for installing a water level probe and a temperature probe. The water level probe is used to detect and control the water level in the water storage chamber, and the temperature probe is used to sense the temperature of the water or steam and control the start and stop of the heating block element.

[0015] Preferably, the upper opening edge of the box body is provided with a first extending edge extending outward, the lower opening edge of the box cover is provided with a third extending edge extending outward, the isolation member also includes a fixing plate, the fixing plate is fixedly connected to all the isolation cylinders to form an isolation cylinder array, the edge of the fixing plate is located between the first extending edge and the third extending edge, and a rubber pad is provided between the fixing plate and the first extending edge, and between the fixing plate and the third extending edge.

[0016] Preferably, the bottom opening of the isolation cylinder is provided with multiple legs, which are attached to the inner bottom of the box body, and the water inlet is left between two adjacent legs.

[0017] Preferably, the bottom of the box is fixed with a base, the base can accommodate the wiring terminals of the heating block element, and the base has heat dissipation holes on its side or bottom.

[0018] A steam oven includes an instant steam generator, a steam connecting pipe, a fan chamber, a cavity, and a base plate. The instant steam generator is fixed on the base plate. The steam outlet is connected to the steam connecting pipe. The steam generated by the instant steam generator enters the fan chamber through the steam connecting pipe. The fan blades in the fan chamber rotate to evenly deliver the steam into the cavity for cooking food.

[0019] Compared with the prior art, the advantages of this utility model are:

[0020] 1. The aluminum heating block has a high thermal conductivity, and combined with the independent steam generation chamber design, the water in each isolation cylinder is rapidly vaporized, greatly increasing the steam generation speed and thus meeting the instantaneous high-temperature steam demand of the steam oven; the stainless steel shell is designed to be separated from the aluminum heating block, and the stainless steel shell is in direct contact with water, avoiding oxidation and corrosion caused by long-term immersion of aluminum, thus extending the service life of the equipment; the independent steam generation chamber + multiple heating blocks work together to achieve efficient, stable and instantaneous steam output.

[0021] 2. The water level probe and temperature sensor are linked for automatic water level adjustment in the storage chamber and precise temperature control of the heating element, automating the entire steam generation process. The drain pipe and outlet pipe, combined with circulating cleaning agents, quickly remove scale and reduce maintenance costs.

[0022] 3. The box body and lid are fixed together by multiple nested extension edges, and with the limiting installation of rubber gaskets and isolation components, the overall structure has strong sealing performance and is easy to assemble. The support feet design of the isolation cylinder ensures that the water inlet is unobstructed, avoiding water level imbalance caused by scale blockage. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the instantaneous steam generator in Example 1;

[0025] Figure 2 This is a schematic cross-sectional view of the instantaneous steam generator in Example 1;

[0026] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0027] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0028] Figure 5 This is an exploded view of the instantaneous steam generator in Example 1;

[0029] Figure 6 This is a schematic diagram of the steam oven in Example 2.

[0030] In the diagram: 11. Base; 111. Heat dissipation hole; 12. Box body; 121. Water storage chamber; 122. Mounting hole; 123. Water inlet pipe; 124. Water outlet pipe; 125. Sewage pipe; 126. First extension edge; 127. Second extension edge; 13. Heating block element; 131. Aluminum heating block; 132. Stainless steel shell; 133. Fixing component; 14. Isolation component; 141. Isolation cylinder; 1411. Water inlet; 1412. Support leg; 142. Steam generating chamber; 143. Fixing plate; 144. Welding screw; 15. Box cover; 151. Steam outlet; 152. Mounting slot; 153. Third extension edge; 154. Fourth extension edge; 16. Sealing ring; 161. Annular groove; 17. Rubber pad; 21. Steam connection pipe; 22. Fan chamber; 23. Cavity; 24. Box bottom plate. Detailed Implementation

[0031] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0032] Example 1

[0033] like Figures 1 to 5 As shown, the instantaneous steam generator includes a base 11, a housing 12, multiple heating elements 13, an isolator 14, and a cover 15. The housing 12 and the cover 15 are securely connected by screws, forming a water storage chamber 121 inside. The isolator 14 is fixed inside the water storage chamber 121 and has multiple isolating cylinders 141 with openings at the top and bottom. The isolating cylinders 141 are fitted over the heating elements 13, so that each heating element 13 and its corresponding isolating cylinder 141 form an independent steam generation chamber 142, or one isolating cylinder 141 is fitted over two or more heating elements 13. When the heating elements 13 are working, they can quickly heat the water in the steam generation chamber 142 to boiling point, rapidly generating steam for cooking food.

[0034] The bottom plate of the housing 12 has mounting holes 122. The heating element 13 extends upward into the water storage chamber 121 through the mounting holes 122. The heating element 13 includes an aluminum heating block 131 and a stainless steel outer shell 132. The aluminum heating block 131 is used for efficient heat transfer due to its high thermal conductivity, while the stainless steel outer shell 132 is in long-term contact with water, making it more corrosion-resistant and easier to remove scale. To optimize processing and heating efficiency, the aluminum heating block 131 is preferably designed in an approximately frustum shape, but a hemispherical or other shapes are also possible. The aluminum heating block 131 and the stainless steel outer shell 132 fit tightly together and are fixed by welding to ensure stability and sealing. Only the stainless steel outer shell 132 is in contact with water in the steam generating chamber 142, preventing the aluminum heating block 131 from being damaged by long-term water contact. To ensure no water leakage after installation, a high-temperature resistant and hydrolysis-resistant sealing ring 16 is provided between the bottom of the stainless steel outer shell 132 and the mounting hole 122 at the bottom of the housing 12 to improve sealing performance. The inner ring of the sealing ring 16 fits tightly against the stainless steel outer shell 132, and the outer ring of the sealing ring 16 has an annular groove 161. The edge of the mounting hole 122 on the bottom plate of the box body 12 is embedded in the annular groove 161. Multiple heating block elements 13 are respectively fixed in the water storage cavity 121 by the fixing parts 133 at the bottom of the box body 12 to ensure stability.

[0035] The isolation component 14 includes a fixing plate 142 and an isolation cylinder 141. The fixing plate 142 has holes corresponding to the positions and number of heating block elements 13. A circular isolation cylinder 141 is welded to each hole. The upper and lower parts of the isolation cylinder 141 are open. A water inlet 1411 is provided between the bottom of the isolation cylinder 141 and the bottom of the box body 12, or the bottom of the isolation cylinder 141 has evenly distributed support legs 1412. During installation, the support legs 1412 are securely attached to the bottom of the box body 12, with a water inlet 1411 between adjacent support legs 1412 to ensure that the water level in the steam generating chamber 142 is always consistent with the water level in the water storage chamber 121. The isolation component 14 can be manufactured using stainless steel welding or integral injection molding processes to optimize manufacturing and assembly.

[0036] The side of the housing 12 is equipped with an inlet pipe 123 and an outlet pipe 124. The inlet pipe 123 ensures a stable water supply to the water storage chamber 121. The mixed water containing the maintenance agent is heated in the water storage chamber 121 and discharged through the outlet pipe 124. It then flows through the cleaning pipe to clean the scale and dirt in the water storage chamber 121. To further optimize the cleaning function, a drain pipe 125 is provided at the lowest point of the bottom of the housing 12, which can periodically drain the water storage chamber 121 and the steam generation chamber 142 to ensure the long-term stable operation of the system.

[0037] The top of the cover 15 has a steam outlet 151 and mounting slots 152 for fixing a water level probe and a temperature sensor. The high-precision water level probe (not shown in the figure) in the mounting slot 152 can accurately control the water level in the water storage chamber 121 to maintain it within a reasonable range. The temperature sensor in the mounting slot 152 senses the temperature of the water or steam and accurately controls the start and stop of the heating element 13 to prevent overheating or dry burning and improve safety.

[0038] like Figure 3 As shown, the upper opening edge of the box body 12 has a first extending edge 126 extending horizontally outward and a second extending edge 127 extending vertically upward. The lower opening edge of the box cover 15 has a third extending edge 153 extending horizontally outward and a fourth extending edge 154 extending vertically downward, with the fourth extending edge 154 fitting over the second extending edge 127. The aforementioned fixing plate 143 is fixedly connected to the isolation cylinder 141 to form an array of isolation cylinders 141. The edges of the fixing plate 143 are clamped and fixed by the first extending edge 126 and the third extending edge 153, making installation simple and convenient. High-temperature resistant rubber pads 17 are provided between the lower surface of the fixing plate 143 and the first extending edge 126, and between the upper surface of the fixing plate 143 and the third extending edge 153. The outer ring sides of the two high-temperature resistant rubber pads 17 are integrally formed, so that the rubber pads 17 tightly clamp the outer edge of the fixing plate 143 of the isolation component 14. The box body 12, the isolation component 14, and the box cover 15 are fastened with screws to ensure overall sealing and structural strength.

[0039] At the bottom of the housing 12, the base 11 is fixed with welding screws. The base 11 can accommodate the wiring terminals and wires of the heating element 13, and the heating element 13 can be replaced by opening the base 11, facilitating maintenance and repair. The bottom or side of the base 11 is provided with heat dissipation holes 111, effectively improving heat dissipation and preventing excessive internal temperature. This instantaneous steam generator has a compact structure, good sealing, high heating efficiency, and is easy to clean and maintain. It can be widely used in various steaming and baking equipment to improve the stability and efficiency of steam supply.

[0040] Example 2

[0041] like Figure 6 As shown, a steam oven includes an instant steam generator, a steam connection pipe 21, a fan chamber 22, a cavity 23, and a base plate 24. The instant steam generator is securely mounted on the base plate 24 with screws, and a high-temperature resistant rubber hose connects the steam outlet 151 to the steam connection pipe 21 to ensure stable and reliable steam delivery. The steam generated by the instant steam generator is delivered to the fan chamber 22 via the steam outlet 151, the rubber hose, and the steam connection pipe 21. The fan blades in the fan chamber 22 rotate at high speed, causing the steam to be evenly distributed throughout the cavity for efficient cooking.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An on-demand steam generator for a steam oven, characterized by, The box body (12), a plurality of heating block elements (13), a spacer (14) and a box cover (15) are included. The box cover (15) is provided with a steam outlet (151), and the box cover (15) is fixedly connected with the box body (12) to form a water storage cavity (121) inside. The spacer (14) is located in the water storage cavity (121), and the spacer (14) includes a plurality of upper and lower opening isolation barrels (141), and at least one heating block element (13) is arranged in each isolation barrel (141), so that the heating block element (13) and the isolation barrel (141) form an independent steam generating cavity (142). The bottom of the isolation barrel (141) or between the isolation barrel (141) and the inner bottom of the box body (12) is provided with a water inlet (1411).

2. The on-demand steam generator of a steam oven according to claim 1, characterized in that, The bottom plate of the box body (12) is provided with a mounting hole (122), the heating block element (13) extends upward into the water storage cavity (121) through the mounting hole (122), and the heating block element (13) includes an aluminum heating block (131) and a stainless steel shell (132), the stainless steel shell (132) is sealingly connected with the bottom plate of the box body (12), so that only the stainless steel shell (132) is in contact with water in the water storage cavity (121).

3. The on-demand steam generator of a steam oven according to claim 2, characterized in that, The lower part of the stainless steel shell (132) extends into the mounting hole (122), and a sealing ring (16) is arranged between the stainless steel shell (132) and the hole wall of the mounting hole (122).

4. The on-demand steam generator of a steam oven according to claim 3, characterized in that, The inner ring of the sealing ring (16) is tightly fitted with the stainless steel shell (132), the outer ring of the sealing ring (16) is provided with an annular groove (161), and the edge of the mounting hole (122) of the bottom plate of the box body (12) is embedded into the annular groove (161).

5. The on-demand steam generator of a steam oven according to claim 1, wherein, The side of the box body (12) is provided with a water inlet pipe (123) and a water outlet pipe (124), and / or the lowest part of the bottom of the box body (12) is provided with a sewage pipe (125).

6. The on-demand steam generator of a steam oven according to claim 1, wherein The box cover (15) is provided with a mounting groove (152) for mounting a water level probe and a temperature sensing probe, the water level probe is used for detecting and controlling the water level of the water storage cavity (121), and the temperature sensing probe is used for sensing the temperature of water or steam and controlling the start and stop of the heating block element (13).

7. The on-demand steam generator of a steam oven according to claim 1, characterized in that, The upper opening edge of the box body (12) is provided with a first extension edge (126) extending outward, the lower opening edge of the box cover (15) is provided with a third extension edge (153) extending outward, the spacer (14) further includes a fixed plate (143) fixedly connected with all the isolation barrels (141) to form an array of isolation barrels (141), the edge of the fixed plate (143) is located between the first extension edge (126) and the third extension edge (153), and a rubber pad (17) is arranged between the first extension edge (126) and the fixed plate (143) and between the third extension edge (153) and the fixed plate (143).

8. The on-demand steam generator of a steam oven according to claim 1, characterized in that, The bottom opening of the isolation cylinder (141) is provided with a plurality of feet (1412) which overlap the inner bottom of the box body (12), and the water inlet (1411) is left between two adjacent feet (1412).

9. The on-demand steam generator of a steam oven according to claim 1, characterized in that, The bottom of the box body (12) is fixed with a base (11), the base (11) can accommodate the wiring terminal of the heating block element (13), and the side or bottom surface of the base (11) is provided with a heat dissipation hole (111).

10. A steam oven, characterized by The instant steam generator, the steam connecting pipe (21), the blade chamber (22), the cavity (23), and the box bottom plate (24) are included, the instant steam generator is fixed on the box bottom plate (24), the steam outlet (151) and the steam connecting pipe (21) are communicated, the steam generated by the instant steam generator enters the blade chamber (22) through the steam connecting pipe (21), and the rotation of the blades in the blade chamber (22) uniformly sends the steam into the cavity (23) for cooking food.

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