Embedded steam cooking electric appliance

Abstract

The invention relates to the technical field of household appliances, and provides an embedded steam cooking appliance which comprises a cavity assembly, a steam generator and a steam generator. The first evaporation mechanism is arranged above the top of the cavity assembly, and the first evaporation mechanism is a main steam source; the second evaporation mechanism is arranged below the bottom of the cavity assembly, the second evaporation mechanism is an auxiliary steam source, when accumulated water is generated at the bottom of the cavity assembly, the second evaporation mechanism starts to work, and the accumulated water at the bottom of the cavity assembly can be heated and evaporated for the second time through the second evaporation mechanism; the exhaust assembly can exhaust condensed steam in the cavity assembly; and the heating assembly can heat the top plate of the cavity assembly. The embedded steam cooking electric appliance has the following advantages that 1, the uniformity of a global temperature field is realized; the cooking quality and the food taste are improved, and food is prevented from being too wet; and 3, the convenience of cleaning and maintenance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an embedded steam cooking appliance. BACKGROUND

[0002] With the continuous improvement of people's pursuit of gourmet food, cooking appliances have become an important home appliance product for improving life quality, showing personal taste and pursuing a healthy life.

[0003] Among them, the steam cooking appliance is an appliance that relies on an evaporator to heat water to generate steam cooking function; such as steam oven, steamer and the like; relies on a steam generator to heat water to generate steam to cook food.

[0004] Under the premise of fixed volume of the whole machine steam oven, in order to improve the uniformity of steam in cooking food inside the steam oven, it is necessary to reduce the problem of excessive condensate water and cold air inside the steam oven; the existing technology cannot simultaneously handle the problems of excessive moisture and water accumulation at the bottom of the cavity.

[0005] The patent with application number CN202421453013.X in the prior art discloses a cooking appliance, which comprises: a box body; an evaporation mechanism; a temperature detection mechanism; the evaporation mechanism is arranged at the bottom of the inner container and is in communication connection with the temperature detection mechanism; two evaporators and a water inlet assembly are arranged in the evaporation mechanism, and at least one evaporation disc is arranged in each evaporator; the total power of the first evaporator is greater than that of the second evaporator. Although the patent improves the temperature control capability of the cooking appliance to a certain extent, both evaporation discs are located in the recessed part at the bottom of the inner container, on the one hand, the uniformity of steam in cooking food inside the steam oven is poor, steam is generated only from the bottom and naturally rises, which easily leads to temperature difference between upper and lower cavities and the problem of "upper well-done and lower well-done"; on the other hand, the two evaporation discs located in the recessed part at the bottom of the inner container are prone to store scale and food residues, which is difficult to clean and maintain; in addition, the fan discharges air inside, which cannot discharge condensed steam, and the excessive condensate water and cold air in the cavity will cause the problem of excessive moisture of food; the design of the air path interferes with the natural convection of steam, the second fan is located directly above the two evaporation discs and blows air downward to form "steam internal circulation", which may hinder the natural upward of steam and affect the uniformity of steam distribution; it also causes the problem of intensified condensation in the cavity and more water accumulation at the bottom of the cavity; finally, the fan adopts the combination of "a pair of lateral first fans and one top second fan", the fan layout is complex, the space occupation is large, and the energy consumption is high.

[0006] In view of this, the present application is proposed. SUMMARY

[0007] The purpose of the present application is to provide an embedded steam cooking appliance to solve the problem that in the prior art, two evaporation discs are located in the recess at the bottom of the inner container, on the one hand, the uniformity of steam in the cooking cavity is poor, the steam is generated only from the bottom and naturally rises, which easily leads to temperature difference between the upper and lower parts of the cavity, and the problem of "upper well-done and lower undercooked" occurs; on the other hand, the two evaporation discs located in the recess at the bottom of the inner container are prone to accumulate scale and food residues, which is difficult to clean and maintain; in addition, the fan discharges air inside the cavity, and cannot discharge the condensed steam, and too much cold air and condensed water in the cavity will cause the problem of excessive moisture of food.

[0008] To achieve the above purpose, the technical scheme of the present application is as follows:

[0009] An embedded steam cooking appliance, the embedded steam cooking appliance comprising:

[0010] A cavity assembly, the inside of the cavity assembly forms a cooking cavity;

[0011] A first evaporation mechanism, the first evaporation mechanism is arranged above the top of the cavity assembly, and the first evaporation mechanism is a main steam source;

[0012] A second evaporation mechanism, the second evaporation mechanism is arranged below the bottom of the cavity assembly, and the second evaporation mechanism is an auxiliary steam source, when water accumulates at the bottom of the cavity assembly, the second evaporation mechanism starts to work, and the second evaporation mechanism can perform second heating and evaporation on the water accumulated at the bottom of the cavity assembly;

[0013] An exhaust assembly, the exhaust assembly can discharge the condensed steam in the cavity assembly;

[0014] A heating assembly, the heating assembly can heat the top plate of the cavity assembly.

[0015] Further, a top heat insulation plate is arranged above the cavity assembly, and the first evaporation mechanism is mounted above the top heat insulation plate.

[0016] Further, the heating assembly is arranged between the cavity assembly and the top heat insulation plate.

[0017] Further, the heating assembly is mounted on the outer surface of the top plate of the cavity assembly.

[0018] Further, the heating assembly comprises a first heating body and a first heating plate, and the first heating body is mounted on the first heating plate.

[0019] Further, the first evaporation mechanism comprises a water tank assembly, a water pump assembly and a top evaporator, the water pump assembly is capable of injecting water of the water tank assembly into the top evaporator to generate steam by heating; a first water suction pipe is arranged between the water tank assembly and the water pump assembly, the water tank assembly and the water pump assembly are communicated through the first water suction pipe, a second water suction pipe is arranged between the water pump assembly and the top evaporator, the water pump assembly and the top evaporator are communicated through the second water suction pipe.

[0020] Further, an air inlet pipe is arranged between the top evaporator and the cavity assembly, the top evaporator is communicated with the cavity assembly through the air inlet pipe, an air inlet is arranged on the first side plate of the cavity assembly, and the air inlet pipe is installed on the air inlet.

[0021] Further, an air exhaust pipe is arranged between the cavity assembly and the air exhaust assembly, the cavity assembly is communicated with the air exhaust assembly through the air exhaust pipe, an air exhaust port is arranged on the second side plate of the cavity assembly, the second side plate is arranged opposite to the first side plate, and the air exhaust pipe is installed on the air exhaust port.

[0022] Further, the air inlet is arranged on the first side plate close to the front end, and the air exhaust port is arranged on the second side plate close to the rear end.

[0023] Further, the air exhaust assembly is installed on the top heat insulation plate, the water pump assembly is arranged between the water tank assembly and the top evaporator, and the air exhaust assembly is arranged at the front end of the water pump assembly.

[0024] The present application provides an embedded steam cooking appliance, compared with the prior art, the embedded steam cooking appliance has the following beneficial effects:

[0025] 1) The embedded steam cooking appliance of the present application, the "three-dimensional steam circulation system" composed of double evaporation mechanisms, can achieve better dynamic distribution of steam and temperature uniformity. On the one hand, the first evaporation mechanism above the cavity assembly works first as the main steam source, and the steam generated by the first evaporation mechanism above the cavity assembly can uniformly heat the food. On the other hand, when the first evaporation mechanism above the cavity assembly is heated to a certain extent and water accumulates at the bottom of the cavity assembly, the second evaporation mechanism starts to work. Not only can it heat and evaporate the water accumulated at the bottom of the cavity for the second time to ensure that no water accumulates at the bottom of the cavity and prevent cold water from accumulating to lower the temperature at the bottom, but it can also generate auxiliary steam. The steam generated by the second evaporation mechanism below the cavity assembly naturally rises, continuously heating the lower surface of the food and the space at the bottom of the cooking cavity to prevent the temperature at the bottom from being too low. The steam generated by the first evaporation mechanism above and the steam generated by the second evaporation mechanism below meet and collide in the middle of the cooking cavity, forming a strong, three-dimensional three-dimensional hot steam turbulence. This greatly breaks down the temperature stratification phenomenon, eliminates temperature dead zones, and makes the temperature at any point in the cooking cavity very close, achieving true global temperature field uniformity. Whether it's the upper, middle, or lower layer of food, it can achieve almost simultaneous maturity. In addition, the heating assembly can heat the top plate of the cavity assembly, further improving the temperature uniformity inside the cooking cavity.

[0026] 2) The embedded steam cooking appliance of the present application significantly improves cooking quality and taste, and the improvement of temperature uniformity directly brings a leap in cooking effect. The second evaporation mechanism of the present solution can eliminate water accumulation at the bottom in a timely manner, and in combination with the exhaust assembly, it can exhaust excess condensed steam, effectively controlling the humidity level inside the cavity to avoid over-wetting and water immersion of the food. Not only can it ensure that the surface of the food is dry and not too wet, but it can also ensure the freshness of the food. In addition, the heating assembly can heat the top plate of the cavity assembly, keeping its temperature always above the dew point of the steam, preventing the formation and dripping of condensate water at the top, avoiding the wet and tasteless mouthfeel caused by condensate water washing the surface of the food, and the destruction of the appearance and loss of flavor, perfectly maintaining the integrity and aesthetics of the dish.

[0027] 3) The embedded steam cooking appliance of the present application fundamentally improves the convenience of cleaning and maintenance: on the one hand, the positions of the two evaporation mechanisms are optimized, and dirt is not easy to accumulate; the first evaporation mechanism is placed above the top, completely avoiding the soup and oil dropped by food, and is not easy to be contaminated, greatly reducing the cleaning frequency and difficulty; the second evaporation mechanism is below the bottom, but its main function is to evaporate accumulated water, rather than long-term soaking work, as the accumulated water is evaporated in time, dirt is not easy to deposit and solidify, reducing the attachment of scale and residue. On the other hand, the second evaporation mechanism and the exhaust assembly greatly reduce the amount of static water accumulated at the bottom of the cavity, reducing scale generation from the source. These two aspects work together to not only reduce the user's burden of wiping the inner container after each use, but also reduce scale generation from the source, reducing the maintenance frequency and difficulty of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a perspective view of an embedded steam cooking appliance according to an embodiment of the present application;

[0029] Figure 2 FIG. 3 is a cross-sectional view along the section line A-A of the embedded steam cooking appliance according to an embodiment of the present application; Figure 1

[0030] Figure 3 FIG. 5 is an enlarged perspective view of position A of the embedded steam cooking appliance according to an embodiment of the present application; Figure 2

[0031] Figure 4 FIG. 7 is another perspective view of the embedded steam cooking appliance according to an embodiment of the present application;

[0032] Figure 5 FIG. 9 is an exploded view of the embedded steam cooking appliance according to an embodiment of the present application;

[0033] Figure 6 FIG. 11 is a perspective view of the embedded steam cooking appliance according to an embodiment of the present application;

[0034] Figure 7 FIG. 13 is a left side view of the embedded steam cooking appliance according to an embodiment of the present application;

[0035] Figure 8 FIG. 15 is a right side view of the embedded steam cooking appliance according to an embodiment of the present application;

[0036] Figure 9 FIG. 17 is an exploded view of the exhaust assembly of the embedded steam cooking appliance according to an embodiment of the present application;

[0037] Figure 10 FIG. 19 is an exploded view of the embedded steam cooking appliance according to an embodiment of the present application;​​

[0038] Figure 11 Figure 2 is a schematic view of an explosion structure of an embedded steam cooking appliance according to an embodiment of the present application;

[0039] Figure 12 Figure 3 is a schematic view of an explosion structure of an embedded steam cooking appliance according to an embodiment of the present application.

[0040] Legend of reference signs:

[0041] 1, water tank assembly; 101, water tank body assembly; 102, water tank seat assembly; 2, exhaust assembly; 201, fixing frame; 2011, avoiding space; 202, air guide cover body; 203, exhaust motor; 204, exhaust fan; 205, air guide cover cap; 2051, positioning convex rib; 206, exhaust passage; 2061, circular passage; 2062, fan-shaped passage; 207, triangular flow guide plate; 208, flow dividing rib; 3, water pump assembly; 4, top evaporator; 5, top heat insulation plate; 6, control circuit board assembly; 7, cavity assembly; 701, air inlet; 702, air outlet; 703, first side plate; 704, second side plate; 8, door assembly; 9, bottom evaporator; 91, second heating body; 92, second heating plate; 12, first water suction pipe; 13, second water suction pipe; 14, air inlet pipe; 15, first water return pipe; 16, second water return pipe; 17, exhaust pipe; 18, base; 19, heating assembly; 191, first heating body; 192, first heating plate. DETAILED DESCRIPTION

[0042] In order to make the technical means and purposes of the present application easy to understand, the embodiments of the present application are described in detail below in combination with specific drawings.

[0043] It should be noted that all the terms for indicating direction and position in the present application, such as “up”, “down”, “left”, “right”, “front”, “back”, “vertical”, “horizontal”, “inner”, “outer”, “top”, “low”, “transverse”, “longitudinal”, “center” and the like, are only used to explain the relative position relationship, connection condition and the like between components in a certain state (as shown in the drawings), and are only for the convenience of describing the present application, and thus cannot be understood as a limitation on the present application that the present application must be constructed and operated in a specific orientation. In addition, the description of “first”, “second” and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features.

[0044] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" 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 present application. In the present application, the exemplary 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.

[0046] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0047] Embodiment 1

[0048] The two evaporation discs of the prior art are located at the recessed part of the inner container bottom. On the one hand, the uniformity of steam in cooking food inside the steaming box is poor, the steam is generated only from the bottom and naturally rises, which easily leads to temperature difference between upper and lower cavities, and the problem of "upper cooking and lower cooking". On the other hand, the two evaporation discs located at the recessed part of the inner container bottom are prone to accumulate scale and food residues, which is difficult to clean and maintain. In addition, the fan discharges air inside, and cannot discharge condensed steam. Too much cold air and condensed water in the cavity will cause the problem of too much moisture in food.

[0049] In order to solve the above technical problems, in the present embodiment, the applicant proposes an embedded steam cooking appliance, as shown in Figures 1-10 The embedded steam cooking appliance comprises:

[0050] A cavity assembly 7, the inside of the cavity assembly 7 forms a cooking cavity;

[0051] A first evaporation mechanism, the first evaporation mechanism is arranged above the top of the cavity assembly 7, the first evaporation mechanism is a main steam source, the first evaporation mechanism generates steam which can enter the inside of the cavity assembly 7 to uniformly heat the food;

[0052] A second evaporation mechanism is arranged below the bottom of the cavity assembly 7, and the second evaporation mechanism is an auxiliary steam source. When the first evaporation mechanism above the cavity assembly 7 is heated to a certain extent, and water accumulates at the bottom of the cavity assembly 7, the second evaporation mechanism starts to work to heat and evaporate the water accumulated in the cavity for the second time. The second evaporation mechanism can heat and evaporate the water accumulated at the bottom of the cavity assembly 7 for the second time, thereby reducing the problem of water accumulation at the bottom of the cavity assembly 7.

[0053] An exhaust assembly 2 can exhaust the condensed steam in the cavity assembly 7.

[0054] A heating assembly 19 can heat the top plate of the cavity assembly 7.

[0055] The embedded steam cooking appliance has the following advantages:

[0056] 1. The embedded steam cooking appliance has a three-dimensional steam circulation system formed by the first evaporation mechanism and the second evaporation mechanism, which can achieve better dynamic distribution of steam and temperature uniformity. On the one hand, the first evaporation mechanism above the cavity assembly 7 works as the main steam source and heats the food uniformly. On the other hand, when the first evaporation mechanism above the cavity assembly 7 is heated to a certain extent, and water accumulates at the bottom of the cavity assembly 7, the second evaporation mechanism starts to work to heat and evaporate the water accumulated at the bottom of the cavity for the second time, thereby preventing the accumulation of cold water and reducing the temperature at the bottom. In addition, the second evaporation mechanism below the cavity assembly 7 can generate auxiliary steam, which naturally rises to continuously heat the lower surface of the food and the space at the bottom of the cooking cavity, thereby preventing the temperature at the bottom from being too low. The steam generated by the first evaporation mechanism above the cavity assembly 7 and the steam generated by the second evaporation mechanism below the cavity assembly 7 meet and collide in the middle of the cooking cavity, forming a strong three-dimensional turbulent flow of hot steam, which greatly breaks the temperature stratification phenomenon and eliminates the temperature dead angle, so that the temperature at any point in the cooking cavity is very close, thereby achieving a truly uniform temperature field. In addition, the heating assembly 19 can heat the top plate of the cavity assembly 7, thereby further improving the temperature uniformity inside the cooking cavity.

[0057] 2. The embedded steam cooking appliance described in this embodiment significantly improves the cooking quality and taste, and the improvement of temperature field uniformity directly leads to a leap in cooking effect; the second evaporation mechanism of the scheme can timely eliminate the bottom water accumulation, and the excessive condensed steam is discharged in combination with the exhaust assembly 2, effectively controlling the humidity level in the cavity, avoiding food over-wetting and water immersion: not only can ensure that the food surface is dry and not over-wet; also can ensure the freshness of the food; in addition, the heating assembly 19 can heat the top plate of the cavity assembly 7, so that its temperature is always higher than the dew point of the steam, preventing the formation and dripping of the top condensed water from the physical root, avoiding the taste of the food surface caused by the condensed water, and the damage to the appearance and the loss of flavor, perfectly maintaining the integrity and beauty of the dish.

[0058] 3. The embedded steam cooking appliance described in this embodiment fundamentally improves the convenience of cleaning and maintenance: on the one hand, the positions of the two evaporation mechanisms are optimized, and dirt is not easy to accumulate; the first evaporation mechanism of the scheme is placed above the top, completely avoiding the soup and oil dropped by the food, and is not easy to be contaminated, greatly reducing the cleaning frequency and difficulty; the second evaporation mechanism is below the bottom, but its main function is to evaporate water, not long-term immersion work, because the water is evaporated in time, dirt is not easy to deposit and solidify, reducing the attachment of scale and residue. On the other hand, through the second evaporation mechanism and the exhaust assembly 2, the static water accumulation at the bottom of the cavity is greatly reduced, and the scale generation is reduced from the source. The two aspects work together to not only reduce the user's burden of wiping the inner container after each use, but also reduce the generation of scale from the source, reducing the maintenance frequency and difficulty of the equipment.

[0059] 4. The embedded steam cooking appliance described in this embodiment, the second evaporation mechanism is to utilize the condensed water generated twice, rather than consuming new water and energy all the time, making the embedded steam cooking appliance more energy-efficient.

[0060] 5. The embedded steam cooking appliance described in this embodiment, when water accumulates at the bottom of the cavity assembly 7, the second evaporation mechanism starts to work, not only making the product more intelligent, but also avoiding dry burning of the second evaporation mechanism, ensuring the efficiency and stability of the entire cooking process.

[0061] A water accumulation detection device is arranged at the bottom of the cavity assembly 7. Since the specific structure of its related components and the specific assembly relationship are prior art, they will not be described here.

[0062] Specifically, a top heat insulation plate 5 is arranged above the cavity assembly 7, and the first evaporation mechanism is installed above the top heat insulation plate 5.

[0063] On the one hand, the heat energy is concentrated, and the efficiency is improved: the setting of the top heat insulation plate 5 effectively prevents the heat generated by the evaporator from being lost upward to the electrical components at the top of the machine, forcing the heat energy to be concentrated downward into the cooking cavity, thereby improving the thermal efficiency. On the other hand, the upper layer components are protected: the high temperature is prevented from causing thermal aging effects on the water tank assembly 1, the water pump assembly 3, and the top evaporator 4, etc. installed above, thereby improving the reliability of the entire machine.

[0064] The steam detection device is arranged inside the cavity assembly 7. The specific structure of the related components and the specific assembly relationship are both prior art, and thus will not be described here.

[0065] Specifically, the heating assembly 19 is arranged between the cavity assembly 7 and the top heat insulation plate 5.

[0066] Placing it between the top plate and the heat insulation plate, on the one hand, an active "heat sandwich" is established outside the top plate of the cavity assembly 7. This heat sandwich can most effectively maintain the stability of the top plate temperature, ensuring that it is always higher than the dew point temperature of the steam in the cavity, thereby maximally inhibiting the formation of condensed water from a physical root. The top heat insulation plate 5 prevents heat loss upward, forcing the heat to be directed to the top plate. The heat is forced to be directed to and used to heat the top plate, without being wasted to other spaces above. This achieves "precise heating", achieving the best anti-condensation effect with the least power consumption, thereby improving the energy efficiency of the entire machine. On the other hand, the inherent, unused gap between the top of the cavity and the heat insulation plate is efficiently utilized, which makes the structure of the entire machine more compact, without increasing the volume, and perfectly fits the strict requirement of embedded household appliances for internal space.

[0067] Specifically, the heating assembly 19 is installed on the outer surface of the top plate of the cavity assembly 7.

[0068] More specifically, in this embodiment, the heating assembly 19 is bonded to the outer surface of the top plate of the cavity assembly 7.

[0069] In this embodiment, the heating assembly 19 includes a first heating body 191 and a first heating plate 192, the first heating body 191 is installed on the first heating plate 192, and the first heating plate 192 is bonded to the outer surface of the top plate of the cavity assembly 7. The setting structure of the heating assembly 19 is very compact, does not occupy additional space, and is easy to produce and assemble; on the other hand, the heat conduction efficiency is high, the first heating plate 192 is usually a metal plate, the first heating plate 192 can act as a heat spreading plate, and the first heating plate 192 quickly and uniformly conducts the heat generated by the first heating body 191 to the entire top plate, avoiding local overheating and achieving large-area uniform heat preservation.

[0070] Further, the first heating body 191 can be set as a heating pipe or a heating wire, which is not specifically limited.

[0071] In the embodiment, the first heat-generating body 191 is a heating wire.

[0072] Specifically, the first evaporation mechanism comprises a water tank assembly 1, a water pump assembly 3 and a top evaporator 4, the water pump assembly 3 can inject water in the water tank assembly 1 into the top evaporator 4 to generate steam by heating; a first water suction pipe 12 is arranged between the water tank assembly 1 and the water pump assembly 3, the water tank assembly 1 and the water pump assembly 3 are communicated through the first water suction pipe 12, and a second water suction pipe 13 is arranged between the water pump assembly 3 and the top evaporator 4, the water pump assembly 3 and the top evaporator 4 are communicated through the second water suction pipe 13.

[0073] Further, the power of the top evaporator 4 is 1200-2000W.

[0074] Specifically, in the embodiment, the power of the top evaporator 4 is 1500W.

[0075] The independent water supply and heating path of the water tank assembly 1, the water pump assembly 3 and the top evaporator 4 can accurately control the amount of water injected into the top evaporator 4, so as to realize accurate adjustment and on-demand generation of steam quantity, and avoid energy waste. On the other hand, the independent water path and evaporator design ensure that water is heated into steam instantly before entering the cavity, and the generated steam is drier and has higher quality.

[0076] Specifically, an air inlet pipe 14 is arranged between the top evaporator 4 and the cavity assembly 7, the top evaporator 4 is communicated with the cavity assembly 7 through the air inlet pipe 14, an air inlet 701 is arranged on a first side plate 703 of the cavity assembly 7, and the air inlet pipe 14 is installed on the air inlet 701.

[0077] Specifically, an air outlet pipe 17 is arranged between the cavity assembly 7 and the air outlet assembly 2, the cavity assembly 7 is communicated with the air outlet assembly 2 through the air outlet pipe 17, an air outlet 702 is arranged on a second side plate 704 of the cavity assembly 7, the second side plate 704 is arranged opposite to the first side plate 703, and the air outlet pipe 17 is installed on the air outlet 702.

[0078] Specifically, the air inlet 701 is arranged on the first side plate 703 close to the front end, and the air outlet 702 is arranged on the second side plate 704 close to the rear end.

[0079] The design ingeniously constructs a diagonal steam flow field that runs through the entire cooking cavity. The steam enters from the front side of the cooking cavity, fully covers the food during the flow process, and is finally discharged from the rear side of the opposite side of the cooking cavity. On the one hand, the steam must flow through the longest path to be discharged, greatly reducing the circulation blind area, improving the uniformity of steam distribution, and avoiding uneven heating of food in the corners. On the other hand, fresh and high-temperature steam is continuously injected from the front, while low-temperature and condensate-rich moisture is forcibly discharged from the rear, achieving efficient replacement of air in the cavity and ensuring the "vigor" of the steam and heating efficiency.

[0080] Specifically, the second evaporation mechanism includes a bottom evaporator 9.

[0081] The power of the top evaporator 4 is greater than the power of the bottom evaporator 9.

[0082] Further, the power of the bottom evaporator 9 is 150-300W, without specific limitation.

[0083] In this embodiment, the power of the bottom evaporator 9 is 200W.

[0084] Further, the bottom evaporator 9 is a heating disc or a heating bottom component, without specific limitation.

[0085] In this embodiment, the bottom evaporator 9 is a heating disc.

[0086] Specifically, the bottom evaporator 9 is fixed below the bottom of the cavity assembly 7 through a third connecting piece.

[0087] This mechanical fixing method is very firm and can withstand the impact of thermal expansion and contraction, ensuring that the heating disc closely fits the bottom of the cavity during long-term use, stabilizing the heat conduction efficiency, while avoiding vibration and abnormal noise, improving the durability of the product.

[0088] Specifically, the exhaust assembly 2 is installed on the top heat insulation plate 5, the water pump assembly 3 is arranged between the water tank assembly 1 and the top evaporator 4, and the exhaust assembly 2 is arranged between the water tank assembly 1 and the water pump assembly 3.

[0089] On the one hand, this arrangement makes the structure compact, integrating all core functional modules such as the water tank assembly 1, the exhaust assembly 2, and the top evaporator 4 in the same area above the cavity assembly 7, achieving the ultimate use of space, which is crucial for compact embedded appliances. On the other hand, this layout allows the paths of the first water suction pipe 12, the second water suction pipe 13, the air inlet pipe 14, and the exhaust pipe 17 to be designed as short and regular as possible, reducing energy loss and failure points.

[0090] Specifically, the control circuit board assembly 6 is installed on the top heat insulation plate 5.

[0091] This arrangement makes the structure more compact, integrating all the core functional modules such as the water tank assembly 1, the exhaust assembly 2, the top evaporator 4, and the control circuit board assembly 6 in the same area above the cavity assembly 7, achieving the ultimate use of space, which is crucial for compact built-in appliances.

[0092] More specifically, the water tank assembly 1 includes a water tank body assembly 101 and a water tank seat assembly 102, and the water tank body assembly 101 is pullably installed inside the water tank seat assembly 102.

[0093] The water tank body assembly 101 and the water tank seat assembly 102 form a double-layer protection for the water inside, preventing water leakage. The water tank body assembly 101 itself is a complete and sealed container with its own lid and sealing ring. This ensures that even during movement and handling, water will not splash or leak from the container; the water tank seat assembly 102 is not just a "drawer", but a "safety tray" or "secondary enclosure", which can further prevent water leakage.

[0094] When the user needs to add water, they can simply pull out the water tank body assembly 101, add water directly on it, and push it back into the water tank seat assembly 102 after filling it with water, which is very convenient.

[0095] More specifically, as shown in Figure 9 The exhaust assembly 2 includes a gas guide cover body 202, an exhaust motor 203, an exhaust fan wheel 204, and a gas guide cover cap 205. The gas guide cover cap 205 covers the top of the gas guide cover body 202, and the gas guide cover cap 205 and the gas guide cover body 202 form an exhaust passage 206. The exhaust fan wheel 204 is installed above the exhaust motor 203, and the exhaust fan wheel 204 and the exhaust motor 203 form an exhaust fan, which is installed in the exhaust passage 206 near the rear end.

[0096] On the one hand, it achieves efficient exhaust, which allows the exhaust pipe 17 from the cooking cavity to be connected to the inlet of the exhaust passage 206 in the shortest and most direct path. The shorter the pipe and the fewer the bends, the smaller the air flow resistance, and the exhaust motor 203 can achieve more efficient exhaust with lower power consumption and less noise. On the other hand, it avoids pressure loss and condensate accumulation caused by long pipes and sharp bends, ensuring that the condensed steam can be quickly and completely exhausted.

[0097] More specifically, as shown in Figure 9As shown, the exhaust passage 206 is set as a circular passage 2061 near the rear end, and is set as a fan-shaped passage 2062 near the front end, the width of the entrance of the fan-shaped passage 2062 is d1, the width of the exit of the fan-shaped passage 2062 is d2, d2 / d1=5~6.

[0098] The circular passage 2061 facilitates the installation of an exhaust fan, and the fan-shaped passage 2062 is set and the width of the exit is 5~6 times the width of the entrance, which facilitates the effective dispersion and deceleration of the high-speed and concentrated airflow, on the one hand, can greatly reduce the exhaust noise and avoid the "whistling" generated by the high-speed airflow; on the other hand, the slowed airflow helps the condensate vapor carried therein to be more fully separated, avoiding the strong ejection of water vapor.

[0099] More specifically, as shown in the figure, Figure 9 More specifically, a triangular flow guide plate 207 is arranged at the exit of the fan-shaped passage 2062.

[0100] On the one hand, it realizes uniform, stable and non-interfering exhaust; the triangular flow guide plate 207 divides the main airflow into two, guiding it to diffuse to both sides, avoiding the direct impact of a single concentrated airflow on the inside of the machine or other components, so that the airflow is uniformly and smoothly distributed; on the other hand, it prevents backflow, and this multi-path and dispersed exhaust method effectively prevents the exhaust of hot and humid gas from forming a vortex in the limited space at the top of the machine and being partially reabsorbed, ensuring the one-time and thoroughness of the exhaust.

[0101] More specifically, as shown in the figure, Figure 9 More specifically, a plurality of flow dividing ribs 208 are arranged at the exit of the fan-shaped passage 2062, and the air guide cover 205. The air guide cover body 202 and the plurality of flow dividing ribs 208 form a plurality of exhaust windows.

[0102] On the one hand, it realizes uniform, stable and non-interfering exhaust; the plurality of flow dividing ribs 208 divides the wide fan-shaped exit into a plurality of small exhaust windows, making the airflow distribution more uniform and stable. On the other hand, it prevents backflow, and this multi-path and dispersed exhaust method effectively prevents the exhaust of hot and humid gas from forming a vortex in the limited space at the top of the machine and being partially reabsorbed, ensuring the one-time and thoroughness of the exhaust.

[0103] More specifically, as shown in the figure, Figure 9 More specifically, the plurality of flow dividing ribs 208 are symmetrically arranged on both sides of the triangular flow guide plate 207.

[0104] This arrangement has the following advantages:

[0105] 1. The air flow can be evenly divided into multiple small streams, and the left and right exhaust flow and speed are almost equal, which avoids the imbalance of internal pressure, extra vibration or noise caused by uneven exhaust on both sides, and ensures stable and efficient exhaust process.

[0106] 2. Maximize the reduction of exhaust noise. The symmetrical structure makes the separation and convergence of air flow predictable and regular when passing through the flow divider 208. This regular flow can effectively disperse the strong air flow noise of a single frequency into a wider frequency range and reduce its peak value. The exhaust sound is more stable and lower, significantly reducing the unpleasant "squeak" or "whistle", and improving the user experience.

[0107] 3. The symmetrical structure has uniform stress distribution when stressed, improving structural stability and reliability

[0108] 4. The symmetrical design simplifies the mold design and production process, reducing costs.

[0109] The air guide cover 205 is detachably connected to the air guide cover body 202.

[0110] This setting facilitates the installation and removal of the air guide cover 205 and the air guide cover body 202. The detachable design allows users or service personnel to easily open and thoroughly clean the entire exhaust passage 206, preventing the accumulation of dirt from breeding bacteria, producing odors, or clogging the air duct.

[0111] More specifically, as shown in Figure 9 The exhaust assembly 2 also includes a fixed frame 201 that can raise the overall height of the exhaust assembly 2. The fixed frame 201 is provided with an avoidance space 2011 below it, which allows the exhaust pipe 17 to be connected smoothly and without sharp bends. At the same time, the avoidance space 2011 allows other pipelines such as the first water suction pipe 12 to pass safely from below. On the one hand, it protects the water pipe and air pipe from being crushed or broken; on the other hand, it achieves neat layout of internal pipelines, reduces mechanical interference and vibration wear, and improves long-term reliability.

[0112] More specifically, as shown in Figure 9 The positioning protrusions 2051 are provided on the air guide cover 205.

[0113] This setting not only plays a positioning role during installation, improving installation efficiency, but also enhances the structural strength of the air guide cover 205.

[0114] The embedded steam cooking appliance described in the embodiment injects water into the top evaporator 4 to generate steam through the water pump assembly 3, the first water suction pipe 12 and the second water suction pipe 13 by the control circuit board assembly 6, and blows the steam into the cooking cavity from the left front side through the air inlet pipe 14 to uniformly heat the food. The steam outlet blows the condensed steam from the upper exhaust assembly 2 from the right rear upper part through the exhaust pipe 17, thereby ensuring the freshness of the food and preventing the food from being too wet, and ensuring that no water accumulates at the bottom of the cavity.

[0115] More specifically, as shown in Figure 1 , a first backwater pipe 15 is arranged between the water tank assembly 1 and the water pump assembly 3, and the water tank assembly 1 and the water pump assembly 3 are communicated through the first backwater pipe 15. A second backwater pipe 16 is arranged between the water pump assembly 3 and the top evaporator 4, and the water pump assembly 3 and the top evaporator 4 are communicated through the second backwater pipe 16.

[0116] The arrangement of the first backwater pipe 15 and the second backwater pipe 16 is a crucial safety and reliability design. Their main function is to achieve the functions of preventing scale dry burning and system self-emptying, and the specific advantages are as follows:

[0117] 1. Scale dry burning of the top evaporator 4 caused by residual water is absolutely prevented, and the core heating element is protected.

[0118] 2. The service life of the top evaporator 4 and the water pump assembly 3 is greatly prolonged, and the failure rate and maintenance cost are reduced.

[0119] 3. The system is automatically emptied, which is convenient for user maintenance and improves the stability of long-term use.

[0120] More specifically, as shown in Figure 5 , the embedded steam cooking appliance further comprises a door assembly 8 installed on the front side of the cavity assembly 7.

[0121] More specifically, as shown in Figure 5 , the embedded steam cooking appliance further comprises a base 18.

[0122] For the embedded steam cooking appliance, in addition to the above-mentioned structure, other related components such as a shell are also included. Since the specific structure and assembly relationship of the related components are prior art, they will not be described here.

[0123] Embodiment 2

[0124] In this embodiment, unlike embodiment 1, as shown in Figure 11 , the top evaporator 4 is a direct injection evaporator.

[0125] Direct injection evaporators offer superior overall performance, providing faster preheating, more precise steam control, more uniform heating, less water accumulation, and a more convenient cleaning experience.

[0126] Example 3

[0127] In this embodiment, unlike in embodiment 1, as follows: Figure 12 As shown, the bottom evaporator 9 is a heating bottom assembly. The bottom evaporator 9 includes a second heating element 91 and a second heating plate 92. The second heating element 91 is mounted on the second heating plate 92, and the second heating plate 92 is bonded to the outer surface of the bottom of the cavity assembly 7.

[0128] The bottom evaporator 9 has a very compact structure, does not occupy extra space, and is easy to manufacture and assemble. On the other hand, it has high heat conduction efficiency. The second heating plate 92 is usually a metal plate. The second heating plate 92 can be used as a heat spreader. The second heating plate 92 quickly and evenly conducts the heat generated by the second heating element 91 to the entire top plate, avoiding local overheating and achieving large-area uniform heat preservation.

[0129] Furthermore, the second heating element 91 can be configured as a heating tube or a heating wire, without any specific limitation.

[0130] In this embodiment, the second heating element 91 is a heating wire.

[0131] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An embedded steam cooking appliance, characterized in that, The embedded steam cooking appliance includes: A cavity assembly (7) is provided, the interior of which forms a cooking cavity; The first evaporation mechanism is located above the top plate of the cavity assembly (7) and serves as the main steam source. The second evaporation mechanism is located below the bottom plate of the cavity assembly (7). The second evaporation mechanism is an auxiliary steam source. When water accumulates at the bottom of the cavity assembly (7), the second evaporation mechanism starts to work. The second evaporation mechanism can heat and evaporate the water at the bottom of the cavity assembly (7) for the second time. Exhaust assembly (2), which is capable of venting condensed vapor from the cavity assembly (7); Heating component (19) is capable of heating the top plate of cavity component (7).

2. The built-in steam cooking appliance according to claim 1, characterized in that, A top heat insulation plate (5) is provided above the cavity assembly (7), and the first evaporation mechanism is installed above the top heat insulation plate (5).

3. The built-in steam cooking appliance according to claim 2, characterized in that, The heating element (19) is disposed between the cavity assembly (7) and the top heat insulation plate (5).

4. The built-in steam cooking appliance according to claim 3, characterized in that, The heating element (19) is mounted on the outer surface of the top plate of the cavity assembly (7).

5. An embedded steam cooking appliance according to claim 4, characterized in that, The heating component (19) includes a first heating element (191) and a first heating plate (192), wherein the first heating element (191) is mounted on the first heating plate (192).

6. The built-in steam cooking appliance according to claim 1, characterized in that, The first evaporation mechanism includes a water tank assembly (1), a water pump assembly (3), and a top evaporator (4). The water pump assembly (3) can inject water from the water tank assembly (1) into the top evaporator (4) to heat and generate steam. A first water pumping pipe (12) is provided between the water tank assembly (1) and the water pump assembly (3), and the water tank assembly (1) and the water pump assembly (3) are connected through the first water pumping pipe (12). A second water pumping pipe (13) is provided between the water pump assembly (3) and the top evaporator (4), and the water pump assembly (3) and the top evaporator (4) are connected through the second water pumping pipe (13).

7. An embedded steam cooking appliance according to claim 6, characterized in that, An air inlet pipe (14) is provided between the top evaporator (4) and the cavity assembly (7). The top evaporator (4) is connected to the cavity assembly (7) through the air inlet pipe (14). An air inlet (701) is provided on the first side plate (703) of the cavity assembly (7). The air inlet pipe (14) is installed on the air inlet (701).

8. An embedded steam cooking appliance according to claim 7, characterized in that, An exhaust pipe (17) is provided between the cavity assembly (7) and the exhaust assembly (2). The cavity assembly (7) is connected to the exhaust assembly (2) through the exhaust pipe (17). An exhaust port (702) is provided on the second side plate (704) of the cavity assembly (7). The second side plate (704) is disposed opposite to the first side plate (703). The exhaust pipe (17) is installed on the exhaust port (702).

9. An embedded steam cooking appliance according to claim 8, characterized in that, The air inlet (701) is located on the first side plate (703) near the front end, and the exhaust port (702) is located on the second side plate (704) near the rear end.

10. An embedded steam cooking appliance according to claim 6, characterized in that, The exhaust assembly (2) is installed on the top heat insulation plate (5), the water pump assembly (3) is located between the water tank assembly (1) and the top evaporator (4), and the exhaust assembly (2) is located at the front end of the water pump assembly (3).

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