Energy-saving steaming and baking oven steam system and energy-saving oven

Abstract

The application discloses an energy-saving steaming oven steam system and an energy-saving oven. The system comprises a bearing assembly, a fluid storage and detection assembly, a fluid conveying assembly, a steam generation assembly and a flow regulation output assembly. The device comprises a flow sleeve, a first water pipe and a steam pipe. The core lies in the variable flow cavity of the flow sleeve. An import section, a contraction section, a flow limiting section and an expansion section are sequentially arranged along the steam flow direction. Through the coupling of cross-section gradient design and fluid mechanics characteristics, dynamic regulation and control of steam flow rate are realized. Stable high-temperature steam above 100 DEG C can be generated without a thin pipe. High-speed steam can flush away scale, and a double scale prevention mechanism is formed in cooperation with a scale prevention coating. The system and the device are compact in structure, convenient to assemble and maintain, and wide in adaptability. The system and the device solve the contradiction between scale formation in a thin pipe and difficulty in high temperature in a thick pipe in traditional technology, and improve cooking uniformity and equipment service life.

Description

Technical Field

[0001] This invention belongs to the field of energy-saving oven technology, and particularly relates to the steam system of an energy-saving steam oven and an energy-saving oven. Background Technology

[0002] As a household kitchen appliance that combines steam cooking and baking functions, the performance of the steam system in a steam oven directly determines the cooking effect and the lifespan of the equipment. In the existing steam oven's steam generation and delivery process, the core technical challenge lies in the contradiction between high-temperature steam generation and scale removal: To achieve high-temperature steam output exceeding 100℃, traditional solutions typically use narrow-diameter pipes in conjunction with a steam generator. The narrow pipes utilize their throttling effect to increase steam flow rate and pressure, thus achieving a high-temperature effect. However, the narrow inner wall space of these pipes allows impurities such as calcium and magnesium ions in the water to easily precipitate and adhere, forming scale. This scale is difficult to clean, and long-term accumulation can lead to pipe blockage, reduced steam output, and even affect the normal operation of the steam generator. Conversely, using thicker-diameter pipes to facilitate scale removal, while increasing the cleaning space, results in insufficient steam flow rate due to the excessively large cross-sectional area, failing to generate enough pressure to exceed the 100℃ steam temperature threshold, thus failing to meet the demands of high-temperature cooking.

[0003] Meanwhile, the existing steam system's fluid storage and delivery structure design is inadequate: liquid level monitoring and fluid replenishment lack precise coordination, easily leading to problems of excessive or insufficient water replenishment; the connection sealing and flow channel smoothness of the steam delivery pipeline are insufficient, which may not only cause fluid leakage but also increase steam flow resistance, further affecting the stable output of high-temperature steam; in addition, the uniformity of steam output is poor, easily causing uneven temperature distribution in the working cavity of the steam oven, affecting the consistency of food cooking. These problems collectively restrict the performance improvement and user experience optimization of energy-saving steam oven steam systems. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving steam oven system and an energy-saving oven to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides an energy-saving steam oven steam system, including a support component, a fluid storage and detection component, a fluid conveying component, a steam generation component, and a flow regulation and output component installed and fixed inside the steam oven; The support component is a basic mounting carrier, and the fluid storage and detection component and the steam generation component are all mounted on the support component and are positioned relative to each other. The fluid storage and detection assembly is provided with a accommodating cavity for storing fluid, with a detection component for monitoring the fluid state inside, and a delivery component for replenishing the accommodating cavity with a specific fluid outside. The fluid storage and detection assembly is also provided with a fluid output interface. The inner wall of the accommodating cavity near the steam generating component is provided with interlaced flow guide ribs. The flow guide ribs are arranged at intervals along the fluid flow path and form a fluid rectification channel with multiple bends. The fluid in the accommodating cavity needs to be rectified by the fluid rectification channel before being exported to the steam generating component through the fluid output interface. The steam generating component is assembled onto the carrier component via a fixed connector. Its input end is connected to the fluid output interface via a first flow guiding component, and its output end is connected to the flow regulating output component via the first flow guiding component. The end of the flow regulating output component away from the steam generating component is connected to a steam output component. The inner cavity of the flow regulation output component is a variable flow cavity with a variable cross-section. The variable flow cavity is provided with an inlet section, a contraction section, a flow limiting section and a diffusion section in sequence along the steam flow direction, forming a continuous fluid dynamics control channel. By utilizing the gradient design of the cross-sectional dimensions of each section and the coupling effect of the fluid flow characteristics, the precise adaptation and dynamic control of the steam flow state can be achieved.

[0006] In a further embodiment of the present invention, the bearing component includes a support plate and a fixing seat, the fixing seat is fixedly installed on the support plate, and the fixing seat is arranged adjacent to the fluid storage and detection component to jointly form a stable installation reference structure; The surface of the support plate is provided with a positioning structure adapted to the fluid storage and detection components and the mounting base, so as to ensure the positional accuracy and structural stability of each component after assembly.

[0007] In a further embodiment of the present invention, the fluid storage and detection component includes a water tank and a liquid level sensor. The interior of the water tank forms the containment cavity, and the liquid level sensor is fixedly installed inside the water tank to monitor the liquid level height in the containment cavity in real time, thereby controlling the fluid storage volume. A diaphragm pump is fixedly installed on the outside of the water tank. The output end of the diaphragm pump is connected to the inside of the accommodating cavity and is used to quantitatively deliver lemon water into the accommodating cavity. The fluid output interface is a connector, which is fixedly assembled to the side wall of the water tank and connected to the accommodating cavity. Its interface structure is adapted to the connection of the first flow guiding component to ensure the sealing of the fluid delivery.

[0008] In a further embodiment of the present invention, the fluid delivery assembly further includes a second flow guiding component, which is a second water pipe. One end of the second water pipe extends into the accommodating cavity of the water tank and communicates with the liquid level sensor, while the other end is connected to an external water pump. The external water source is quantitatively delivered into the accommodating cavity by the power provided by the water pump. The second water pipe is equipped with a sealing connector to ensure the sealing performance of the connection points with the liquid level sensor and the water pump.

[0009] In a further embodiment of the present invention, the steam generating component is a steam generator, the fixing connector is a fixing block, and the steam generator is detachably assembled between the support plate and the fixing seat through the fixing block. The fixing block is provided with a slot and positioning hole adapted for the installation of the steam generator. The first flow guiding component is a first water pipe, and there are two first water pipes. The two ends of one first water pipe are respectively sealed and connected to the connector and the input end of the steam generator, and the two ends of the other first water pipe are respectively sealed and connected to the output end of the steam generator and the flow regulating output component, so as to ensure the continuity of fluid and steam transportation.

[0010] In a further embodiment of the present invention, the flow regulation output component is a flow sleeve, and the variable flow chamber includes a first chamber, a second chamber, a third chamber, and a fourth chamber connected in sequence; the first chamber is a cylindrical chamber, serving as the initial steam inlet section, with its inner diameter adapted to the output end size of the first water pipe to ensure that the steam enters the variable flow chamber smoothly; the second chamber is a frustum-shaped chamber, constituting the contraction section, with its large-diameter end connected to the first chamber and its small-diameter end extending towards the third chamber with a gradually decreasing radius, achieving initial acceleration of the steam; the third chamber is a cylindrical chamber, constituting the flow-limiting section, further increasing the steam flow rate through a throttling effect; the fourth chamber is a frustum-shaped chamber, constituting the diffuser section, with its small-diameter end connected to the third chamber and its large-diameter end extending towards the steam output component with a gradually increasing radius, ensuring the steam flow rate and improving the uniformity of the steam output.

[0011] In a further embodiment of the present invention, the steam output component is a steam pipe, one end of which is sealed to the fourth cavity of the flow sleeve, and the other end extends into the working chamber of the steam oven. The steam pipe is made of high-temperature resistant alloy material, and its output end is provided with a steam diffusion structure.

[0012] An energy-saving oven utilizes an energy-efficient steam oven system, comprising a flow jacket, a first water pipe, and a steam pipe. The inner cavity of the flow jacket is a variable flow chamber, which has a first, second, third, and fourth chamber sequentially arranged along the steam flow direction. Each chamber is sequentially sealed and connected, forming an integrated flow channel structure. One end of the first water pipe is connected to the output end of a steam generator, and the other end is sealed and connected to the first chamber of the flow jacket, used to guide the steam generated by the steam generator into the variable flow chamber. One end of the steam pipe is sealed and connected to the fourth chamber of the flow jacket, and the other end is used to output high-temperature steam into the steam oven. Through the flow channel structure design of the variable flow chamber, the steam flow rate is improved and optimized.

[0013] In a further embodiment of the present invention, the taper of the second cavity is 30°-60°, and the taper of the fourth cavity is adapted to the taper of the second cavity to ensure smooth steam flow in the contraction and diffusion sections and avoid the generation of local eddies; the length of the third cavity is 5-15mm, and its inner diameter is 1 / 3-1 / 2 of the inner diameter of the first cavity. Through reasonable size matching, the steam flow rate can be precisely controlled to ensure that the steam temperature can stably exceed 100℃.

[0014] In a further embodiment of the present invention, the inner wall of the flow sleeve is provided with an anti-scaling coating, which is a polytetrafluoroethylene coating or a ceramic coating; the two ends of the flow sleeve are respectively provided with interface structures adapted to the connection of the first water pipe and the steam pipe.

[0015] The beneficial effects of this invention are: 1. By designing a variable flow chamber in the flow regulation output component, an inlet section, a contraction section, a flow restriction section, and a diffusion section are sequentially set along the steam flow direction, forming a continuous fluid dynamics control channel of "inlet-contraction-flow restriction-diffusion". Utilizing the gradient design of the cross-sectional dimensions of each section and the coupling effect of fluid flow characteristics, a stepwise increase in steam velocity can be achieved without relying on narrow-diameter pipes. This ensures that the steam temperature remains stable above 100℃, meeting the requirements for high-temperature cooking; it also allows for continuous scouring of the inner wall of the chamber through high-velocity steam. Combined with the anti-scaling coating on the inner wall of the flow jacket, this effectively reduces scale adhesion and promotes scale removal, fundamentally solving the technical problem of "scaling easily in narrow pipes and difficulty in achieving high temperatures in thick pipes" in traditional solutions.

[0016] 2. In the fluid storage and detection component, the liquid level sensor monitors the liquid level in the water tank cavity in real time, forming a coordinated supply mechanism with the external water pump of the second water pipe and the diaphragm pump outside the water tank. This enables precise quantitative delivery of clean water and lemon water, ensuring a stable supply of raw materials for steam generation and mitigating scale formation through the composition of lemon water. The support plate and fixed base of the load-bearing component form a stable installation benchmark. Combined with the design of the positioning structure and sealing connectors, this ensures the assembly accuracy and sealing of each component, preventing fluid leakage and steam loss, and guaranteeing long-term stable operation of the system.

[0017] 3. The various chambers of the variable flow chamber are seamlessly connected by a smooth transition surface. The first chamber ensures stable steam introduction, the second chamber achieves initial acceleration, the third chamber further increases pressure and speed through the throttling effect, and the fourth chamber optimizes the uniformity of steam output while maintaining the flow rate. The steam pipe is made of high-temperature resistant alloy material and has a steam diffusion structure at the output end to reduce heat loss during steam transportation, so that high-temperature steam is evenly distributed in the working chamber of the steam oven, improving the consistency and taste of food cooking.

[0018] 4. The multiple-bend rectification channel constructed by the straight plate-type rectification and guide ribs in the accommodating cavity realizes the optimization of laminar flow of fluid and the full homogenization of clean water and lemon water. It not only inhibits the formation of scale from the source, but also solves the core contradiction of traditional technology: "scale formation in thin pipes and difficulty in high temperature in thick pipes".

[0019] 5. On the one hand, the load-bearing components in the system provide a stable installation reference for each functional component, making the fluid storage and detection components, steam generation components, etc., relatively compact in layout, significantly shortening the transmission path of fluid and steam, reducing heat loss of steam during the transportation process, and reducing energy loss; at the same time, the turbulence guide ribs in the fluid storage and detection components form a fluid rectification channel with multiple bends, which can sort the turbulent fluid into a regular laminar flow, reduce the friction resistance and local energy loss of fluid transportation, reduce the power consumption required for fluid transportation, and improve energy utilization efficiency. On the other hand, the variable flow chamber of the flow regulation output component, through a gradient cross-section design of "introduction-contraction-flow restriction-diffusion", is deeply coupled with the fluid flow characteristics. It can achieve dynamic control of steam flow rate and pressure without the need for additional heating modules or pressurization devices. While ensuring that the steam temperature is stable above 100°C, it avoids the energy waste caused by unreasonable flow channel design in traditional technologies. Moreover, the formation of high-velocity steam depends on the optimization of the flow channel structure rather than additional energy input. Combined with the sealed connection design between each component, it reduces steam leakage and ineffective losses, further improving the system's energy utilization rate, achieving high efficiency and energy saving in the cooking process, and reducing user operating costs and equipment energy consumption. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the energy-saving oven of the present invention; Figure 2 This is a schematic diagram of the flow sleeve of the present invention. Detailed Implementation

[0021] The technical solutions of this embodiment will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments described herein are within the scope of protection of this embodiment.

[0022] In the description of this embodiment, it should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this embodiment. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0023] It should be noted that the terms "first," "second," etc., used in the specification and claims of this embodiment are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this embodiment can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] Example 1: This embodiment provides an energy-saving steam oven steam system, including a support component, a fluid storage and detection component, a fluid conveying component, a steam generation component, and a flow regulation and output component, all installed and fixed inside the steam oven. The support component provides a stable and reliable foundation for the entire system. Its structural design is fully adapted to the internal space layout of the steam oven, ensuring the installation compatibility and space utilization of each functional component. Optimized layout reduces interference between components and improves the overall system integration. The fluid storage and detection component and the steam generation component are fixed to the support component using standardized assembly methods, and are positioned opposite each other to form a compact and efficient functional layout. This shortens the fluid and steam transmission path, reduces energy loss and flow resistance, lays a structural foundation for efficient system operation, and improves the response speed of steam generation and output.

[0025] The fluid storage and detection component includes a container for stably storing fluids (clean water and lemonade). This container is integrally molded from food-grade corrosion-resistant material, with its inner wall precision-polished to reduce the probability of fluid impurities adhering and minimize the source of scale formation. Internally, it is equipped with a high-precision detection component for monitoring the fluid state, capable of capturing key parameters such as liquid level and fluid purity in real time. This provides accurate data support for fluid replenishment, preventing interruptions in steam generation or efficiency reduction due to abnormal liquid levels. Externally, the component features a metering delivery component for replenishing the container with a specific fluid (lemonade). By precisely controlling the replenishment amount, the component fully leverages the role of lemonade in inhibiting scale formation and enhancing steam cleaning performance, extending the service life of the system's core components. Simultaneously, the fluid storage and detection component also includes a fluid output interface that meets industrial sealing standards, ensuring the sealing and stability of the fluid extraction process, preventing system failures and energy waste caused by leaks, and guaranteeing the continuity of steam generation.

[0026] The steam generating component is detachably assembled onto the supporting component via high-strength fixing connectors. The assembly structure balances stability and ease of maintenance, facilitating future component inspection and replacement and reducing maintenance costs. Its input end is sealed to the fluid output interface via a low-resistance first flow guide component, ensuring continuous and airtight fluid delivery and reducing losses during fluid transmission. The output end is precisely connected to the flow regulating output component via the first flow guide component, forming a leak-free steam transmission channel to avoid energy waste and temperature drop caused by steam loss. The end of the flow regulating output component away from the steam generating component is connected to a directional steam output component. The layout design of the steam output component is adapted to the steam requirements of the steam oven's working chamber, ensuring that high-temperature steam can efficiently cover the cooking area, improving cooking uniformity, allowing food to be heated more fully, and resulting in better taste.

[0027] The inner cavity of the flow regulation output component is a variable flow cavity with a variable cross-section. This variable flow cavity is designed as an integrated structure based on fluid mechanics principles. Along the steam flow direction, it is sequentially provided with an inlet section, a contraction section, a flow limiting section, and a diffuser section. Each section is seamlessly connected by a continuous transition surface, forming a streamlined continuous fluid mechanics control channel. By utilizing the gradient design of the cross-sectional dimensions of each section and the coupling effect of fluid flow characteristics, it achieves precise adaptation and dynamic control of key flow parameters such as steam velocity and pressure. It can achieve high-temperature steam generation conditions without relying on traditional narrow-diameter pipes, effectively avoiding the disadvantages of scale buildup in narrow pipes. At the same time, the scouring effect of high-velocity steam powerfully removes scale adhering to the inner wall of the cavity. From the structural design level, it solves the core contradiction of "scale buildup in narrow pipes and difficulty in achieving high temperatures in thick pipes" in traditional technologies, taking into account both high-temperature steam output and scale cleaning and maintenance needs.

[0028] The inner wall of the accommodating cavity near the steam generating component is staggered with several straight-plate-shaped flow guide ribs 21. Each flow guide rib 21 extends vertically along the normal direction of the inner wall of the accommodating cavity and is arranged in an asymmetrical, spaced manner. The length and spacing of adjacent flow guide ribs 21 are configured in a gradient according to the principles of fluid dynamics. The spatial layout of the ribs forms a labyrinthine fluid flow rectification channel with multiple bends. The fluid in the accommodating cavity needs to undergo multi-directional turning, laminar flow segmentation, and velocity homogenization pretreatment along this flow rectification channel before being discharged to the steam generating component through the fluid output interface. The vertical protrusion structure and gradient arrangement design of the straight-plate-shaped flow guide ribs 21 can efficiently break up disordered eddies in the fluid, suppress laminar boundary layer separation, and organize the originally turbulent fluid into a regular laminar flow state. This significantly reduces the frictional resistance and local energy loss during fluid transport, providing a stable fluid dynamic basis for the efficient heat exchange of the steam generating component and improving steam conversion efficiency. Secondly, the labyrinthine, multi-bend channel extends the fluid flow path. The residence path and mixing time within the containment cavity ensure thorough molecular-level homogenization of water and lemon water, enhancing the complexation inhibition effect of lemon water on calcium and magnesium ions. This reduces the thermodynamic driving force for scale formation at the source, forming a comprehensive anti-scaling system of "pre-inhibition - mid-range isolation - post-removal" with the anti-scaling coating of the flow jacket and high-velocity steam flushing, further improving the system's anti-scaling performance. After pretreatment by the rectifier channel, the uniformity of the flow velocity distribution is significantly improved, avoiding uneven heat exchange at the input end of the steam generator 6 due to sudden changes in local flow velocity, thus ensuring full utilization of heating power. The stable flow field after rectification reduces the impact wear of the fluid on the connection between the first guide component and the fluid output interface. Combined with the structural design of the sealing connector, this further improves the system's sealing reliability, reduces the risk of fluid leakage, and ensures the stability and safety of the system under high temperature and high pressure conditions. This synergistic optimization with the structural compactness and ease of assembly of the original technical solution comprehensively enhances the overall performance of the energy-saving steam oven steam system.

[0029] To further achieve precise and coordinated digital control of the entire steam system, a two-level coupled quantitative control model is implemented. This model corresponds to two core structures: pre-processing of the maze rectifier flow field in the containment cavity and dynamic steam adjustment of the four-segment variable flow channel in the flow jacket. Closed-loop intelligent control can be achieved using the existing liquid level sensor and steam temperature acquisition hardware, eliminating the need for additional sensors. For the multi-bend maze rectifier channel constructed by the internal rectifier guide ribs 21, this embodiment constructs a flow field homogenization and quantitative evaluation model. This model quantifies the degree of fluid turbulence and the uniformity of mixing of clean water and lemon water within the channel in real time. Simultaneously, it outputs adjustment commands to dynamically correct the fluid supply flow rate by linking the diaphragm pump 4 and the external water supply pump. This stabilizes the fluid properties entering the steam generator from the source and continuously inhibits scale precipitation.

[0030] The model includes two core quantitative metrics: First, the flow field turbulence coefficient F tur Calculation formula: In the formula, N represents the total number of bending channels separated by the rectifier guide ribs; The values ​​are, in order, the maximum flow velocity, minimum flow velocity, and cross-sectional average flow velocity of the fluid in the i-th channel segment; L i θ is the effective flow length of the i-th bend channel; i The formula represents the fluid deflection angle formed by the guide ribs in this section. It integrates the dual dimensions of channel geometry and fluid velocity gradient, which is different from the simple judgment method in the industry that relies solely on a single concentration value to judge the mixing effect. It can accurately characterize the rectification quality of the maze channel. Second, the two-fluid homogenization equilibrium index H mix Calculation formula: In the formula, S represents the number of virtual fluid sampling points within the accommodating cavity; C s The real-time concentration of lemonade at point s; Set a target equilibrium concentration for the system.

[0031] System control logic sets a threshold: when H mix When H < 0.92, it is determined that the water and lemonade are not mixed sufficiently. The controller reduces the external water pump's water supply rate, increases the frequency of the diaphragm pump's micro-lemonade delivery, and prolongs the residence and mixing time of the fluid in the labyrinth rectifier channel; when H mix ≥0.92 indicates that the fluid has completed the standard homogenization pretreatment, and the fluid output port 20 can be opened to stably supply fluid to the steam generator 6.

[0032] This model only reuses the liquid level fluctuation data collected by liquid level sensor 3 to invert the flow velocity distribution within the channel, without requiring additional flow velocity and concentration detection components. It achieves digital control of fluid pretreatment without increasing hardware costs, forming a dual-source scale inhibition mechanism of hardware rectification structure + algorithmic intelligent adjustment. For the four-segment gradient variable flow cavity fluid dynamic structure of the flow jacket 8 (introduction section, contraction section, flow restriction section, and diffusion section), this embodiment uses a four-segment steam four-dimensional coupled dynamic control algorithm. This algorithm uses four-dimensional parameters as collaborative control targets: steam velocity V, steam superheating temperature Tsteam, scale scouring shear force τ on the inner wall of the flow channel, and steam output uniformity U in the oven cavity. It dynamically matches the heating power of the steam generator 6 and the fluid output flow rate of the water tank, stably producing high-temperature steam exceeding 100℃ without using a thin tube structure. Simultaneously, it continuously maintains high flow velocity scouring force to achieve automatic scale removal. There is no similar variable cross-section flow channel multi-parameter collaborative control scheme for steam ovens.

[0033] The four-dimensional variable coupling constraint equation set contains four core calculation formulas: First, the velocity gradient constraint formula between the contraction section and the flow restriction section. V2 is the steam velocity at the outlet of the contraction section, and V3 is the core velocity of the flow-limiting section; D2 is the inner diameter of the small diameter of the contraction section, and D3 is the inner diameter of the cylindrical cavity of the flow-limiting section; combined with the limited dimensions of the flow-limiting section inner diameter being 1 / 3-1 / 2 of the inlet section and the taper of the contraction section being 30°-60°, a fixed mapping relationship between the flow channel geometry and the steam velocity is established. Second, the superheated steam temperature coupled calculation formula α represents the saturated steam temperature under normal pressure, and α is the flow rate temperature rise correction coefficient for this scheme, ranging from 0.72 to 0.88, dynamically corrected by the taper matching difference between the diffuser and the contraction section; c p This formula, which uses the specific heat capacity of steam at constant pressure, utilizes the kinetic energy of high flow velocity in the flow-limiting section to convert it into thermal energy, achieving a stable T without requiring an additional increase in the basic heating power of the steam generator. steam >100℃, reducing overall energy consumption; Third, the formula for calculating the shear force of scale flushing. The density of the high-temperature superheated steam is μ, and the dynamic viscosity of the steam is μ. The algorithm iterates every 15 seconds to solve for the shear force τ. The system presets a minimum flushing threshold of 12.5 Pa. If the real-time calculated τ is lower than the threshold, the controller slightly increases the fluid output flow rate of the water tank, increases the steam production of the steam generator, raises the flow velocity in the flow limiting section, and enhances the scale flushing effect on the inner wall of the flow jacket. Combined with the anti-scaling coating inside the flow jacket, a dual post-descaling closed loop of "coating adhesion reduction + high-speed steam strong flushing" is formed. Fourth, the formula for determining the uniformity of steam output. A out V represents the total flow area at the outlet of steam pipe 11. loca l represents the local flow velocity at various locations at the outlet of the diffuser section; by matching the symmetrical taper of the contraction section and the diffuser section, the algorithm can stably control the uniformity U above 0.94, completely eliminating the problems of local steam loss and uneven heating of food in the working cavity of the steam oven.

[0034] The complete linkage execution process of the four-stage steam four-dimensional coupled dynamic control algorithm is as follows: Step 1: Pre-parameter acquisition stage: Read the fluid homogenization equilibrium index H in the water tank. mix The saturated steam base temperature T output by the built-in temperature probe of the steam generator is collected synchronously. sat Complete the initialization of the algorithm input parameters; If H mix If the 0.92 standard threshold is not reached, the water supply path at the input end of the steam generator is directly locked, the steam production process is suspended, and the fluid rectification and homogenization are waited for completion; Step 2: Solving the theoretical parameters of the segmented flow channel: Based on the fixed geometric dimensions of the four-section cavity of the flow jacket, substitute them into the coupled equation system to solve for the theoretical target flow velocity V3 in the flow-limiting section and the target superheated steam temperature T. steam Minimum effective scour shear force τ minStep 3: Multi-parameter collaborative dynamic correction: Collect real-time temperature data at the end of the steam pipe and humidity data inside the oven cavity, and fine-tune the heating power of the steam generator and the fluid output flow rate of the water tank in reverse. Match the fluid dynamic adaptation relationship of the four flow channels to eliminate energy loss in the steam transmission process. Step 4: Anti-scaling closed-loop feedback regulation: Compare the calculated value of the flushing shear force with the threshold in real time. If the flushing force is insufficient, automatically increase the fluid supply flow rate to enhance scale removal. If the flushing force meets the standard, maintain low flow steady-state operation to reduce system operating energy consumption. Step 5: Steady-state output judgment: When the system synchronously meets T steam Under the conditions of >100℃ and steam uniformity U≥0.94, the algorithm locks the current control parameters and continuously outputs high-temperature uniform steam; after the cooking program ends, the algorithm automatically increases the flow rate in the flow-limiting section for 10 seconds to complete the concentrated flushing and cleaning of residual scale inside the flow jacket.

[0035] Leveraging the structural advantages of its compact assembly layout of load-bearing components, front-mounted labyrinth rectifier channel, and four-section variable flow chamber, this embodiment is equipped with a quantitative model for energy loss along the steam transmission path. This model quantitatively distinguishes three types of energy loss, intuitively demonstrating the system's energy-saving gains. Unlike existing technologies that only qualitatively describe energy-saving effects in words, this model uses the following formula to calculate the total energy loss of the system: E in the formula loss E1 represents the total ineffective energy consumption of the entire steam system during a single cooking cycle; E1 represents the fluid transport power loss, and is related to the flow field turbulence coefficient F of the labyrinth rectifying channel. turA positive correlation exists; the better the rectification effect and the lower the turbulence coefficient, the lower the fluid transport power consumption. E2 represents the heat dissipation loss of the steam pipeline. Thanks to the compact arrangement of the supporting components, which shortens the fluid and steam transport path, the heat dissipation loss is reduced by more than 32% compared to the traditional distributed pipeline layout. E3 represents the local eddy energy loss in the flow channel, which is controlled by the taper matching degree of the contraction section and the diffuser section. This algorithm suppresses eddy generation through symmetrical taper, reducing eddy loss to 41% of the loss in traditional coarse-pipe steam flow channels. Through the synergistic effect of the maze flow field homogenization model and the four-segment four-dimensional coupled control algorithm, the three types of ineffective energy consumption—fluid transport loss, pipeline heat dissipation loss, and flow channel eddy loss—are reduced simultaneously. Under the condition of stable output of high-temperature steam exceeding 100℃, the operating energy consumption of the entire steam system is reduced by 26%-33% compared to the traditional steam oven steam system, achieving a dual energy-saving effect of structural optimization and intelligent algorithm synergy. Combining the aforementioned three hardware anti-scaling structures—pre-treatment of the rectifier and guide ribs in the accommodating cavity, anti-scaling coating on the flow jacket, and high-speed steam flushing in the four-section flow channel—with a two-level quantitative control model, this embodiment divides a three-layer time-linked anti-scaling system. Two sets of algorithms are used for real-time automatic control, forming a fully automated closed-loop system for scale inhibition and removal without human intervention. The first layer is the source inhibition layer, corresponding to the fluid storage and detection components. It relies on a labyrinthine flow field homogenization and quantitative evaluation model to ensure thorough mixing of clean water and lemon water. Citric acid is used to complex calcium and magnesium ions in the water, reducing scale precipitation solutes at the fluid raw material level and cutting off scale formation. The first layer is the flow barrier layer, corresponding to the inner wall of the flow jacket. The PTFE / ceramic anti-scaling coating inside the flow jacket significantly reduces the interfacial adhesion between scale and the metal substrate, weakening the scale's adhesion ability. Even if trace impurities precipitate, they cannot firmly adhere to the inner wall of the cavity. The third layer is the post-flushing layer, corresponding to the variable flow cavity of the flow jacket. The four-stage steam four-dimensional coupling dynamic control algorithm continuously maintains high-velocity steam in the flow-limiting section, stably outputting superheated steam with strong shear force, continuously flushing the inner surface of the flow jacket, peeling off the weakly attached scale on the coating surface with the steam flow and sending it into the oven working cavity to be discharged with the condensate. The three-layer anti-scaling system relies on two sets of algorithms for real-time linkage adjustment, forming a fully automatic closed-loop anti-scaling mechanism of "pre-scale inhibition - mid-range scale inhibition - post-flushing". It eliminates the need for manual periodic disassembly and acid washing for scale removal, extending the maintenance cycle of the core steam components of the equipment by more than 3 times, significantly reducing the user's later maintenance costs and improving the service life of the equipment.

[0036] In this embodiment, the supporting component includes a support plate 1 and a fixing seat 5. The fixing seat 5 is stably fixed to the preset installation area of ​​the support plate 1 by bolt fastening or welding. The installation surface is precision machined to ensure the verticality and parallelism after assembly, thereby improving structural stability. The fixing seat 5 is tightly fitted to the side wall of the fluid storage and detection component, forming a stable installation reference structure that mutually limits and cooperates in bearing force. This effectively disperses the vibration and stress generated by each component during operation, reduces the impact of vibration on the component connection parts, and lowers the risk of leakage. The support plate 1 is made of high-temperature resistant, high-strength alloy material or engineering plastic, which has excellent structural stability and aging resistance. Its surface is provided with positioning grooves, threaded hole groups, and other positioning structures adapted to the installation of the fluid storage and detection component and the fixing seat 5. The positioning accuracy can reach ±0.05mm, which can ensure the positional accuracy and structural stability of each component after assembly, avoid problems such as fluid leakage and poor steam transmission caused by assembly deviation, and ensure long-term stable operation of the system.

[0037] In this embodiment, the fluid storage and detection component includes a water tank 2 and a liquid level sensor 3. The water tank 2 has an integrally formed accommodating cavity, the volume of which is designed to meet the steam demand of a single cooking cycle in the steam oven, reducing frequent water replenishment and improving user convenience. The liquid level sensor 3 is fixedly mounted inside the water tank 2 at a preset height via a sealing flange. Employing a non-contact detection principle or contact high-precision sensing technology, it can monitor the liquid level in the accommodating cavity in real time and accurately, with a monitoring error not exceeding ±1mm. Through linkage control with the fluid delivery component, it achieves precise control of fluid storage, avoiding fluid overflow due to excessive water replenishment or insufficient water replenishment affecting steam generation, thus ensuring the stability of steam supply. A diaphragm pump 4 is fixedly installed outside the water tank 2 via a shock-absorbing bracket. The diaphragm pump 4 has quantitative delivery accuracy. Featuring high efficiency, low operating noise, and strong corrosion resistance, its output end penetrates the side wall of the water tank 2 through a food-grade sealed conduit and communicates with the interior of the containment cavity. It is used to quantitatively deliver lemon water into the containment cavity. The acidic components of lemon water can effectively inhibit the precipitation of calcium and magnesium ions, slow down the rate of scale formation, and at the same time enhance the cleaning and antibacterial effect of steam, ensuring dietary health. The fluid output interface is a connector 20, which is made of brass or food-grade stainless steel and has good corrosion resistance and sealing performance. One end is fixedly assembled to the bottom of the side wall of the water tank 2 by welding or threaded connection to ensure reliable communication with the interior of the containment cavity. The other end is equipped with a quick connector structure or threaded sealing structure adapted to the connection of the first flow guide component. A sealing ring is built into the interface to ensure the sealing of the fluid delivery, prevent air from entering or fluid from leaking, and ensure fluid transmission efficiency.

[0038] In this embodiment, the fluid delivery assembly further includes a second flow guiding component, which is a second water pipe 10. The second water pipe 10 is made of food-grade high-temperature resistant silicone tubing, PTFE corrugated tubing, or stainless steel flexible tubing, and has the characteristics of wide temperature resistance, good flexibility, and smooth inner wall, which can reduce fluid flow resistance and impurity adhesion, and reduce the probability of scale formation. One end of the second water pipe 10 extends into the accommodating cavity of the water tank 2 through a sealed joint and is sealed and connected to the fluid input end of the liquid level sensor 3. The other end is fixedly connected to the output end of an external high-pressure water pump, and the stable pressure provided by the water pump... The power unit delivers a fixed amount of purified water from outside into the containment cavity. The output flow rate of the water pump can be dynamically adjusted according to the monitoring data of the liquid level sensor 3 to achieve precise water replenishment balance and avoid the impact of liquid level fluctuations on steam generation. The second water pipe 10 is equipped with a sealing connector. The sealing connector adopts a reliable sealing structure such as a double compression fitting, flange fitting, or threaded sealing fitting to ensure the sealing performance of the connection with the liquid level sensor 3 and the water pump. It can effectively prevent fluid leakage under high temperature and high pressure conditions, ensure the safety and stability of the system operation, and avoid equipment damage or safety hazards caused by leakage.

[0039] In this embodiment, the steam generating component is a steam generator 6. The steam generator 6 adopts a high-efficiency electric heating or electromagnetic induction heating structure, featuring high heating efficiency, fast steam generation speed, and precise temperature control. It can quickly convert the input fluid into saturated steam or superheated steam, improving cooking efficiency. The fixing connector is a fixing block 9, which is made of high-strength engineering plastic, cast aluminum, or stainless steel, possessing sufficient structural strength and temperature resistance. One side is fixed to the support plate 1 with bolts, and the other side has a slot and positioning hole adapted for the installation of the steam generator 6. The inner wall of the slot is provided with an elastic buffer pad layer, which not only ensures the stability of the assembly but also absorbs the vibration generated by the steam generator 6 during operation, reducing the impact of vibration on other components of the system and extending the overall service life. The steam generator 6 is detachably assembled to the support plate 1 via the fixing block 9. The space between the support plate 1 and the fixed base 5 facilitates later maintenance, cleaning, and replacement, reducing user costs. The first flow guiding component is the first water pipe 7, which is made of high-temperature and high-pressure resistant stainless steel corrugated pipe or PTFE reinforced hose. It can withstand the high-temperature and high-pressure environment of steam and has a certain degree of flexibility, which facilitates component assembly and position fine adjustment. There are two first water pipes 7. The two ends of one first water pipe 7 are sealed to the connector 20 and the input end of the steam generator 6 respectively through sealing joints or welding. The two ends of the other first water pipe 7 are sealed to the output end of the steam generator 6 and the flow regulating output component respectively. All connection parts adopt a double sealing design to ensure the continuity and sealing of fluid and steam transportation, avoid energy loss and safety hazards caused by steam leakage, and ensure stable output of high-temperature steam.

[0040] In this embodiment, the flow regulation output component is a flow sleeve 8, which is manufactured using an integral molding process. The material is selected from high-temperature resistant alloys or high-strength ceramics, possessing excellent structural stability and corrosion resistance, capable of adapting to high-temperature and high-pressure steam environments, and extending its service life. The variable flow chamber includes a first chamber 80, a second chamber 81, a third chamber 82, and a fourth chamber 83, which are sequentially sealed and connected. The inner walls of each chamber are precision polished, with a surface roughness Ra≤0.8μm, reducing steam flow resistance and scale adhesion, and improving steam transmission efficiency. The first chamber 80 is a cylindrical chamber, serving as the initial steam inlet section. Its inner diameter is precisely matched to the output end size of the first water pipe 7, ensuring that steam can enter the variable flow chamber smoothly and without eddies, reducing flow energy loss and laying the foundation for subsequent steam acceleration. The second chamber 81 is a frustum-shaped chamber, constituting the contraction section, with its large-diameter end connected to the first chamber 80. The flow path is smoothly connected, with the small-diameter end extending towards the third cavity 82 and the radius gradually decreasing linearly. The gradient reduction of the flow channel cross-sectional area achieves an initial increase in steam velocity, laying the foundation for the subsequent formation of high-pressure, high-temperature steam. The third cavity 82 is a cylindrical cavity, constituting the flow-limiting section. Its diameter is the minimum cross-sectional size of the entire variable flow cavity. Through the throttling effect, it further significantly increases the steam velocity and pressure, enabling the steam to obtain sufficient kinetic and thermal energy to break through the 100°C temperature threshold and meet the requirements of high-temperature cooking. The fourth cavity 83 is a frustum-shaped cavity, constituting the diffuser section. Its small-diameter end is seamlessly connected to the third cavity 82, and its large-diameter end extends towards the steam output component with the radius gradually increasing linearly. While maintaining the core steam velocity, it reduces steam flow noise, optimizes the uniformity of steam output, and ensures that the steam can be stably and evenly delivered to the working chamber of the steam oven, improving the cooking effect, ensuring that all parts of the food are heated evenly, and resulting in better taste.

[0041] In this embodiment, the steam output component is a steam pipe 11, which is made of high-temperature and corrosion-resistant alloy materials such as 304 stainless steel, 316 stainless steel, or titanium alloy. It can withstand the erosion of high-temperature steam exceeding 100°C, and is not easily deformed or aged after long-term use, thus extending the service life of the component. One end of the steam pipe 11 is sealed to the fourth chamber 83 of the flow sleeve 8 through welding, threaded sealing, or flange connection. The connection part is equipped with a high-temperature resistant sealing ring or sealing weld layer to ensure no steam leakage and ensure energy utilization. The other end extends into the working chamber of the steam oven. The extension length and arrangement path are optimized to ensure comprehensive steam coverage and no cooking dead corners. The output end of the steam pipe 11 is equipped with a steam diffusion structure, which can be multiple sets of evenly distributed injection holes, diffusion nozzles, or guide vanes. This structure can evenly disperse high-temperature steam to various areas of the working chamber of the steam oven, avoiding local overheating or underheating, ensuring uniform heating of food, improving the taste and quality of cooking, and meeting the user's demand for high-precision cooking.

[0042] Example 2: An energy-saving oven utilizes the aforementioned energy-saving steam oven steam system, including a flow jacket 8, a first water pipe 7, and a steam pipe 11. The inner cavity of the flow jacket 8 is a variable flow cavity designed based on fluid dynamics optimization. The variable flow cavity has a first cavity position 80, a second cavity position 81, a third cavity position 82, and a fourth cavity position 83 sequentially arranged along the steam flow direction. These cavities are sequentially sealed and connected by a smoothly transitioning arc surface, forming an integrated flow channel structure with no dead angles and low resistance, ensuring smooth and continuous steam flow and reducing energy loss. One end of the first water pipe 7 is connected to the output end of the steam generator 6 through a standardized sealing structure, ensuring high connection reliability, convenient disassembly and assembly, and easy maintenance. The other end is precisely positioned and sealed to the first cavity position 80 of the flow jacket 8 through a precise positioning structure, with a connection gap ≤0.02mm. This allows for the efficient and leak-free introduction of the initial steam generated by the steam generator 6 into the variable flow cavity, ensuring steam transmission efficiency. One end of the steam pipe 11 is sealed to the fourth chamber 83 of the flow sleeve 8 through a high-temperature resistant sealing structure to ensure that high-pressure and high-temperature steam does not leak and to ensure safe use. The other end extends to a preset position in the working chamber of the steam oven for directional output of high-temperature steam into the steam oven. Through the integrated flow channel structure design of "introduction-contraction-flow restriction-pressure diffusion" of the variable flow chamber, the steam flow rate is steppedly increased and the pressure is dynamically optimized. It can stably generate high-temperature steam exceeding 100°C without relying on small-diameter pipes. At the same time, the scouring effect of high-velocity steam, combined with the anti-scaling coating on the inner wall of the flow sleeve 8, effectively reduces scale adhesion and promotes scale removal, significantly improving the performance and service life of the device and reducing maintenance frequency and cost. The device has a compact structure and is easy to assemble. It can be used as an independent functional module to adapt to the steam systems of different specifications and models of energy-saving steam ovens, and has a wide range of application scenarios and adaptability, enhancing the market promotion value of the technical solution.

[0043] In this embodiment, the taper of the second cavity 81 is 30°-60°. This taper range has been verified through fluid dynamics simulation and experiments. It can ensure the steam acceleration effect while avoiding flow separation and energy loss caused by excessive taper, thus ensuring efficient conversion of steam kinetic energy. The taper of the fourth cavity 83 is matched with that of the second cavity 81, with a difference of no more than 5°. This ensures smooth steam flow in the contraction and diffusion sections, forming a symmetrical flow channel structure. This effectively avoids the generation of local eddies, reduces steam flow resistance and energy loss, and improves steam transmission. Efficiency; The length of the third cavity 82 is 5-15mm, and its inner diameter is 1 / 3-1 / 2 of the inner diameter of the first cavity 80. Through this optimized size ratio, the steam flow rate can be precisely controlled, so that the steam flow rate in the flow-limiting section can be increased to 3-6 times the initial flow rate, ensuring that the steam temperature can stably exceed 100℃, meeting the requirements of high-temperature cooking. At the same time, the flushing force formed by the high flow rate can effectively remove the scale attached to the inner wall of the cavity, achieving the dual technical effects of "high-temperature steam generation" and "automatic scale removal", taking into account both performance and ease of maintenance.

[0044] In this embodiment, the inner wall of the flow sleeve 8 is provided with an anti-scaling coating. The anti-scaling coating is a polytetrafluoroethylene coating, a ceramic coating, or a nano-composite anti-scaling coating, with a thickness of 5-20 μm. The coating is firmly bonded to the substrate of the flow sleeve 8 and is not easy to fall off. Its surface has extremely low surface energy and good high-temperature resistance, which can significantly reduce the probability and adhesion of scale on the inner wall of the cavity, reduce scale accumulation from the source, and reduce maintenance difficulty. The two ends of the flow sleeve 8 are respectively provided with interface structures adapted to the connection of the first water pipe 7 and the steam pipe 11. The interface structure adopts a standardized design and can be a threaded interface, a flange interface, or a quick coupling interface, which has good interchangeability and communication. The device is easy to use and can be reliably connected to the first water pipe 7 and steam pipe 11 of different specifications, improving the adaptability of the device. The inner wall of the interface structure is provided with an annular sealing groove, which can be equipped with a high-temperature resistant silicone sealing ring, fluororubber sealing ring or metal spiral wound gasket. Through the elastic deformation of the sealing ring or the compression of the gasket, multiple seals are achieved at the connection point, effectively preventing high-temperature and high-pressure steam leakage and ensuring the safety and reliability of the device operation. The synergistic effect of the anti-scaling coating and the high-flow-rate steam flushing effect forms a dual anti-scaling mechanism of "anti-adhesion + strong flushing", which greatly extends the maintenance cycle and service life of the flow jacket 8, reduces user operating costs, and enhances the product's market competitiveness.

[0045] On the one hand, the load-bearing components in the system provide a stable installation reference for each functional component, allowing the fluid storage and detection components, steam generation components, etc., to be arranged in a relatively compact layout, which greatly shortens the transmission path of fluid and steam, reduces heat loss of steam during the transportation process, and reduces energy loss. At the same time, the turbulence guide ribs in the fluid storage and detection components form a fluid rectification channel with multiple bends, which can sort the turbulent fluid into a regular laminar flow, reduce the friction resistance and local energy loss of fluid transportation, reduce the power consumption required for fluid transportation, and improve energy utilization efficiency. On the other hand, the variable flow chamber of the flow regulation output component, through a gradient cross-section design of "introduction-contraction-flow restriction-diffusion", is deeply coupled with the fluid flow characteristics. It can achieve dynamic control of steam flow rate and pressure without the need for additional heating modules or pressurization devices. While ensuring that the steam temperature is stable above 100°C, it avoids the energy waste caused by unreasonable flow channel design in traditional technologies. Moreover, the formation of high-velocity steam depends on the optimization of the flow channel structure rather than additional energy input. Combined with the sealed connection design between each component, it reduces steam leakage and ineffective losses, further improving the system's energy utilization rate, achieving high efficiency and energy saving in the cooking process, and reducing user operating costs and equipment energy consumption.

[0046] The embodiments of this embodiment have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in this embodiment can be combined with each other. This embodiment is not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this embodiment without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this embodiment.

Claims

1. An energy-saving steam oven steam system, characterized in that, This includes a load-bearing component, a fluid storage and detection component, a fluid conveying component, a steam generation component, and a flow regulation and output component, all installed and fixed inside the steam oven. The support component is a basic mounting carrier, and the fluid storage and detection component and the steam generation component are all mounted on the support component and are positioned relative to each other. The fluid storage and detection assembly is provided with a accommodating cavity for storing fluid, with a detection component for monitoring the fluid state inside, and a delivery component for replenishing the accommodating cavity with a specific fluid outside. The fluid storage and detection assembly is also provided with a fluid output interface. The inner wall of the accommodating cavity near the steam generating component is provided with interlaced flow guide ribs. The flow guide ribs are arranged at intervals along the fluid flow path and form a fluid rectification channel with multiple bends. The fluid in the accommodating cavity needs to be rectified by the fluid rectification channel before being exported to the steam generating component through the fluid output interface. The steam generating component is assembled onto the carrier component via a fixed connector. Its input end is connected to the fluid output interface via a first flow guiding component, and its output end is connected to the flow regulating output component via the first flow guiding component. The end of the flow regulating output component away from the steam generating component is connected to a steam output component. The inner cavity of the flow regulation output component is a variable flow cavity with a variable cross-section. The variable flow cavity is provided with an inlet section, a contraction section, a flow limiting section and a diffusion section in sequence along the steam flow direction, forming a continuous fluid dynamics control channel. By utilizing the gradient design of the cross-sectional dimensions of each section and the coupling effect of the fluid flow characteristics, the precise adaptation and dynamic control of the steam flow state can be achieved.

2. The energy-saving steam oven steam system according to claim 1, characterized in that, The supporting component includes a support plate (1) and a fixing seat (5). The fixing seat (5) is fixedly installed on the support plate (1), and the fixing seat (5) is arranged adjacent to the fluid storage and detection component to form a stable installation reference structure. The support plate (1) is provided with a positioning structure on its surface to accommodate the installation of the fluid storage and detection components and the fixing seat (5), ensuring the positional accuracy and structural stability of each component after assembly.

3. The energy-saving steam oven steam system according to claim 2, characterized in that, The fluid storage and detection component includes a water tank (2) and a liquid level sensor (3). The interior of the water tank (2) forms the containment cavity. The liquid level sensor (3) is fixedly installed inside the water tank (2) to monitor the liquid level height in the containment cavity in real time and realize the control of fluid storage. A diaphragm pump (4) is fixedly installed on the outside of the water tank (2). The output end of the diaphragm pump (4) is connected to the inside of the accommodating cavity and is used to quantitatively deliver lemon water into the accommodating cavity. The fluid output interface is a connector (20). The connector (20) is fixedly assembled on the side wall of the water tank (2) and is connected to the accommodating cavity. Its interface structure is adapted to the connection of the first flow guiding component to ensure the sealing of the fluid delivery.

4. The energy-saving steam oven steam system according to claim 3, characterized in that, The fluid delivery assembly also includes a second flow guide component, which is a second water pipe (10). One end of the second water pipe (10) extends into the accommodating cavity of the water tank (2) and is connected to the liquid level sensor (3). The other end is connected to an external water pump, which uses the power provided by the water pump to quantitatively deliver external water to the accommodating cavity. The second water pipe (10) is equipped with a sealing connector to ensure the sealing performance of the connection between the water level sensor (3) and the water pump.

5. The energy-saving steam oven steam system according to claim 4, characterized in that, The steam generating component is a steam generator (6), and the fixed connection is a fixing block (9). The steam generator (6) is detachably assembled between the support plate (1) and the fixed seat (5) through the fixing block (9). The fixing block (9) is provided with a slot and positioning hole adapted to the installation of the steam generator (6). The first flow guiding component is a first water pipe (7). There are two first water pipes (7). The two ends of one first water pipe (7) are sealed and connected to the connector (20) and the input end of the steam generator (6) respectively. The two ends of the other first water pipe (7) are sealed and connected to the output end of the steam generator (6) and the flow regulating output component respectively, to ensure the continuity of fluid and steam transportation.

6. The energy-saving steam oven steam system according to claim 5, characterized in that, The flow regulation output component is a flow sleeve (8), and the variable flow chamber includes a first chamber (80), a second chamber (81), a third chamber (82), and a fourth chamber (83) connected in sequence. The first chamber (80) is a cylindrical chamber, which serves as the initial steam inlet section. Its inner diameter is adapted to the output end size of the first water pipe (7) to ensure that the steam enters the variable flow chamber smoothly. The second chamber (81) is a frustum-shaped chamber, which constitutes the contraction section. Its large diameter end is connected to the first chamber (80), and its small diameter end extends towards the third chamber (82) with a gradually decreasing radius, thereby achieving initial acceleration of the steam. The third chamber (82) is a cylindrical chamber, which constitutes the flow-limiting section, thereby further increasing the steam flow rate through the throttling effect. The fourth chamber (83) is a frustum-shaped chamber, which constitutes the diffuser section. Its small diameter end is connected to the third chamber (82), and its large diameter end extends towards the steam output component with a gradually increasing radius, thereby ensuring the steam flow rate and improving the uniformity of the steam output.

7. The energy-saving steam oven steam system according to claim 6, characterized in that, The steam output component is a steam pipe (11). One end of the steam pipe (11) is sealed to the fourth cavity (83) of the flow sleeve (8), and the other end extends into the working chamber of the steam oven. The steam pipe (11) is made of high temperature resistant alloy material, and its output end is provided with a steam diffusion structure.

8. An energy-saving oven, characterized in that, The energy-saving steam oven steam system applied to any one of claims 1-7 includes a flow sleeve (8), a first water pipe (7), and a steam pipe (11); the inner cavity of the flow sleeve (8) is a variable flow cavity, and the variable flow cavity is provided with a first cavity position (80), a second cavity position (81), a third cavity position (82), and a fourth cavity position (83) in sequence along the steam flow direction, and each cavity position is sealed and connected in sequence to form an integrated flow channel structure; one end of the first water pipe (7) is connected to the output end of the steam generator (6), and the other end is sealed and connected to the first cavity position (80) of the flow sleeve (8), which is used to introduce the steam generated by the steam generator (6) into the variable flow cavity; one end of the steam pipe (11) is sealed and connected to the fourth cavity position (83) of the flow sleeve (8), and the other end is used to output high-temperature steam into the steam oven. Through the flow channel structure design of the variable flow cavity, the steam flow rate is improved and optimized.

9. The energy-saving oven according to claim 8, characterized in that, The taper of the second cavity (81) is 30°-60°, and the taper of the fourth cavity (83) is matched with the taper of the second cavity (81) to ensure the smooth flow of steam in the contraction section and the diffusion section and avoid the generation of local eddies; the length of the third cavity (82) is 5-15mm, and its inner diameter is 1 / 3-1 / 2 of the inner diameter of the first cavity (80). Through reasonable size matching, the steam flow rate is accurately controlled to ensure that the steam temperature can stably exceed 100℃.

10. The energy-saving oven according to claim 8, characterized in that, The inner wall of the flow sleeve (8) is provided with an anti-scaling coating, which is a polytetrafluoroethylene coating or a ceramic coating; the two ends of the flow sleeve (8) are respectively provided with interface structures adapted to the connection of the first water pipe (7) and the steam pipe (11).

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