Water vapor separation rapid heating device

Abstract

The application discloses a water-vapor separation rapid heating device, which comprises a bottom shell, a water tank arranged above the bottom shell, a water inlet and a longitudinal steam passage being formed in the water tank, a heating assembly arranged in the bottom shell and being connected with the lower end of the steam passage to form a steam chamber, water in the heating chamber generating steam and flowing upwards along the passage, a float valve assembly connected with the water inlet and the steam chamber, the water level being lowered to open a water supplement passage so that water in the water tank is supplemented to the steam chamber through the water inlet, and a juice receiving disc arranged above the water tank and provided with an exhaust hole connected with the upper end of the steam passage. The heating area and the water storage area are physically separated, the initial water heating amount is significantly reduced, and steam is rapidly generated. The water level is dynamically controlled by the float valve, accurate water supplement is realized after consumption, temperature sudden drop caused by direct cold water injection and repeated heating are avoided, and the heat efficiency and response speed are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, and in particular relates to a water vapor separation rapid heating device. Background Technology

[0002] As a common kitchen appliance, the heating efficiency and user experience of electric steamers are crucial. However, existing electric steamers typically use a design where a large water tank is directly connected to the heating zone. This results in an excessive initial water volume in the heating chamber, significantly prolonging the heating time and making it difficult to achieve rapid heating. Furthermore, when water is added to the heating chamber during operation, a large amount of cold water rushes in and mixes with the already heated hot water, causing a sudden drop in the heating chamber temperature. This requires more time and energy to reheat, resulting in low thermal efficiency. At the same time, the boiling fluctuations of the water in the heating chamber can easily interfere with the stable operation of the water level detection device, affecting the accuracy of water replenishment control. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] To overcome the above shortcomings, the purpose of this utility model is to provide a water vapor separation rapid heating device to solve the technical problems of existing electric steamers, which are caused by the lack of effective separation between the heating zone and the water storage zone, resulting in a large initial heating water volume, slow temperature rise, and cold water directly impacting the heating zone during water replenishment, causing a sudden drop in temperature and low thermal efficiency. At the same time, boiling fluctuations interfere with water level control.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] A water-vapor separation rapid heating device includes: a bottom shell; a water tank fitted on top of the bottom shell for storing water, the water tank having an inlet and a longitudinally extending steam channel; a heating component located inside the bottom shell, which is connected to the lower end of the steam channel and together forms a steam chamber for heating the water in the steam chamber to generate water vapor that is discharged upward along the steam channel; a float valve assembly located inside the bottom shell and communicating with the inlet and the steam chamber, the float valve assembly opening when the water level in the steam chamber drops, allowing water from the water tank to be replenished to the steam chamber through the inlet; and a drip tray fitted on top of the water tank, the drip tray having an exhaust port communicating with the upper end of the steam channel.

[0008] By physically isolating the heating zone and the water storage zone, the initial heating water volume is significantly reduced, enabling rapid steam generation. The dynamic water level control mechanism of the float valve assembly ensures timely and accurate water replenishment after the water in the steam chamber is consumed, avoiding the problem of sudden temperature drop and repeated heating caused by cold water directly entering the heating zone in traditional electric steamers, thus greatly improving thermal efficiency and response speed.

[0009] In some embodiments, the water inlet is a longitudinally extending cylindrical structure, and a water passage is provided at the bottom of the water tank to connect the side wall of the water inlet and the side wall of the steam passage. The float valve assembly is embedded in the lower end of the water inlet and docks with the water passage.

[0010] In some embodiments, the float valve assembly includes: a hollow valve body embedded in the lower end of the inlet and abutting against the inner wall of the inlet, the upper end of the valve body being open and the lower end being sealed, and a water passage hole being formed in the side wall at the corresponding water passage; an upper sealing plate covering the upper end of the valve body, which extends downward and has a sealing port; and a float valve movably disposed in the valve body under the action of buoyancy, which abuts against or disengages from the sealing port to close or open the sealing port.

[0011] The water passage guides the water flow direction, and the sealing port is directly opened and closed by the float valve. Combined with the buoyancy-driven mechanical structure, the response speed is faster, no external energy is required, and the accuracy of water replenishment is guaranteed.

[0012] In some embodiments, it further includes an overflow manhole cover located at one end of the water passage corresponding to the steam passage.

[0013] Overflow covers can prevent air bubbles from penetrating while allowing water to flow slowly, thereby eliminating fluctuation interference. By setting overflow covers, the violent fluctuations of boiling water in the steam chamber are effectively blocked, preventing air bubbles and turbulent water flow from interfering with the lifting and lowering action of the float valve assembly, ensuring the stability and reliability of water level detection. At the same time, its simple structure can achieve anti-interference function without additional drive components, reducing the failure rate.

[0014] In some embodiments, it further includes a sealing ring disposed around the outside of the valve body and abutting against the inner wall of the lower end of the inlet.

[0015] The sealing ring completely isolates the gap between the inlet and the valve body, preventing water from leaking through non-designed paths; at the same time, it buffers the assembly stress of the valve body, reduces the risk of structural deformation after long-term use, extends the life of the float valve assembly, and maintains the accuracy of water level control.

[0016] In some embodiments, the drip tray forms a cylindrical structure fitted over the upper end of the steam channel at the position corresponding to the steam channel, and the vent is opened on the side wall of the cylindrical structure.

[0017] The cylindrical structure raises the steam venting position, preventing condensed juice in the drip tray from flowing back and clogging the vent. The side opening design guides the horizontal diffusion of steam, improving the uniformity of steam distribution, while preventing high-temperature steam from directly hitting the upper food, thus preserving the food's moisture and texture. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the water vapor separation rapid heating device of this utility model;

[0019] Figure 2This is an exploded view of the water vapor separation rapid heating device of this utility model;

[0020] Figure 3 This is a state diagram of the water replenishment process of the water vapor separation rapid heating device of this utility model;

[0021] Figure 4 This is a state diagram of the water shut-off process of the water vapor separation rapid heating device of this utility model;

[0022] Figure 5 This is a first-view structural schematic diagram of the juice receiving tray in the water vapor separation rapid heating device of this utility model;

[0023] Figure 6 This is a schematic diagram of the juice receiving tray from a second perspective in the water vapor separation rapid heating device of this utility model;

[0024] Figure 7 This is a first-view structural schematic diagram of the water tank in the water vapor separation rapid heating device of this utility model;

[0025] Figure 8 This is a structural schematic diagram of the water tank in the water vapor separation rapid heating device of this utility model from a second perspective;

[0026] Figure 9 This is a cross-sectional view of the water tank in the water vapor separation rapid heating device of this utility model;

[0027] Figure 10 This is a schematic diagram of the float valve assembly in the water vapor separation rapid heating device of this utility model;

[0028] Figure 11 This is an exploded view of the float valve assembly in the water vapor separation rapid heating device of this utility model;

[0029] Figure 12 This is a cross-sectional view of the float valve assembly in the water vapor separation rapid heating device of this utility model;

[0030] Figure 13 This is a first-view structural schematic diagram of the overflow manhole cover in the water vapor separation rapid heating device of this utility model;

[0031] Figure 14 This is a structural schematic diagram of the overflow manhole cover from a second perspective in the water vapor separation rapid heating device of this utility model.

[0032] Figure label:

[0033] 1. Bottom shell; 2. Water tank; 21. Steam passage; 22. Water inlet; 23. Water passage; 3. Heating assembly; 4. Float valve assembly; 41. Valve body; 411. Water passage hole; 42. Upper sealing plate; 421. Sealing port; 43. Sealing ring; 44. Float valve; 441. Central guide rod; 5. Juice receiving tray; 51. Vent hole; 6. Overflow well cover. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0035] This utility model provides a water-vapor separation rapid heating device, comprising: a bottom shell 1, a water tank 2 fitted on top of the bottom shell 1, a heating assembly 3, a float valve assembly 4, and a drip tray 5. Specifically, the water tank 2 is used for water storage and has a longitudinally extending steam channel 21 and a water inlet 22; the heating assembly 3 is fixed inside the bottom shell 1, and its top is sealed to the lower end of the steam channel 21, forming an independent steam chamber. The initial water volume in the steam chamber is controlled within the range of approximately 50-100ml, significantly less than that of a traditional electric steamer. Further, the float valve assembly 4 connects the water inlet 22 and the steam chamber, and its opening and closing action is triggered by the rise and fall of the water level: when the water level in the steam chamber drops, the internal components of the float valve assembly 4 automatically open the water inlet 22, allowing cold water from the water tank 2 to replenish the steam chamber through the water inlet 22; conversely, it closes. It is worth noting that the drip tray 5 is fitted on top of the water tank 2, and its vent 51 is directly connected to the upper end of the steam channel 21, ensuring that water vapor is directionally discharged to the cooking area.

[0036] Based on this, the inlet 22 is designed as a longitudinally extending cylindrical structure. In particular, a water passage 23 is opened laterally at the bottom of the water tank 2, connecting the side wall of the inlet 22 and the side wall of the steam passage 21 to form a water path. After the float valve assembly 4 is embedded in the lower end of the inlet 22, its side precisely aligns with the water passage 23, allowing the makeup water to flow slowly into the steam chamber laterally, completely avoiding cold water directly impacting the heating zone.

[0037] Furthermore, the float valve assembly 4 includes: a hollow valve body 41, an upper sealing plate 42, and a float valve 44. Specifically, the valve body 41 is embedded in the lower end of the inlet 22, and its outer side wall is press-fitted with the inner wall of the inlet 22; the upper end of the valve body 41 is open and the lower end is closed, and a water passage hole 411 (with a diameter of about 3mm) is opened on the side wall corresponding to the position of the water passage channel 23. Preferably, the upper sealing plate 42 covers the top of the valve body 41, and extends downward from the center to form a sealing port 421; the float valve 44 is movably disposed in the valve body 41, and its top center guide rod 441 can be vertically inserted into the sealing port 421 for vertical movement and guidance. When the float valve 44 moves upward and abuts against the sealing port 421 of the upper sealing plate 42, a seal is formed, or the float valve 44 opens when it moves away from the sealing port 421 as the water level drops. Special note: The float valve 44 is made of hollow plastic material with a density lower than water, ensuring the reliability of buoyancy drive; the end of the sealing port 421 is a flared rubber head, which forms a soft adsorption seal with the top of the float valve 44.

[0038] To eliminate interference from boiling water flow, an overflow cover 6 is added to one end of the water passage 23 near the steam chamber. This overflow cover 6 has openings and is preferably made of high-temperature resistant engineering plastic, covering the water outlet of the water passage 23. During operation, it blocks turbulent bubbles and fluctuating water flow within the steam chamber, maintaining a stable water level around the float valve 44, thereby ensuring accurate water level detection.

[0039] To further optimize sealing, a sealing ring 43 is installed around the outside of the valve body 41. This sealing ring 43 is made of silicone, approximately 2mm thick, and is pressed tightly against the inner wall of the lower end of the inlet 22 via an interference fit. This prevents water leakage from the gap between the valve body 41 and the inlet 22, and also buffers vibrations of the valve body 41, extending the component's lifespan. Alternatively, fluororubber can be used to improve high-temperature resistance.

[0040] The specific process for replenishing and turning off the water is as follows:

[0041] When the heating component 3 is activated, the water in the steam chamber evaporates due to heat, causing the water level to drop. At this time, the float valve 44 drops synchronously with the water level, moving away from the sealing port 421 and opening the water supply channel. The cold water in the water tank 2 flows sequentially through the inlet 22 → the inside of the valve body 41 → the water passage hole 411 on the side wall of the valve body 41 → the water passage 23 at the bottom of the water tank 2, and finally slowly enters the steam chamber from the side, avoiding cold water directly hitting the high-temperature water body.

[0042] When cold water is replenished to the set water level, the float valve 44 floats up under the action of buoyancy and its upper end face comes into contact with the sealing port 421, achieving a seal and shutting off the water through soft deformation.

[0043] During the above process, the overflow cover 6 continuously blocks the boiling fluctuations in the steam chamber, ensuring that the float valve 44 only responds to the actual water level changes.

[0044] Finally, the drip tray 5 extends upwards from the steam channel 21 to form a cylindrical structure, with its height exceeding the plane of the tray by approximately 3 cm. Specifically, vent holes 51 are formed on the side wall of the cylindrical structure (4-6 holes, approximately 1.5 mm in diameter) to allow for horizontal steam diffusion. Preferably, the inner wall of the cylindrical structure is provided with guide ribs to prevent condensed juice from flowing back and clogging the vent holes 51, while also evenly dispersing the steam flow.

[0045] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A rapid heating device for water vapor separation, characterized in that, include: A bottom shell (1); a water tank (2) fitted above the bottom shell (1) for storing water, the water tank (2) having an inlet (22) and a longitudinally extending steam channel (21); a heating component (3) installed inside the bottom shell (1), which is connected to the lower end of the steam channel (21) and together forms a steam chamber for heating the water in the steam chamber to generate steam that is discharged upward along the steam channel (21); a float valve assembly (4) installed inside the bottom shell (1) and connected to the inlet (22) and the steam chamber, the float valve assembly (4) opening when the water level in the steam chamber drops, allowing the water in the water tank (2) to be replenished to the steam chamber through the inlet (22); and a drip tray (5) fitted above the water tank (2), the drip tray (5) having an exhaust hole (51) connected to the upper end of the steam channel (21).

2. The water vapor separation rapid heating device according to claim 1, characterized in that, The inlet (22) is a longitudinally extending cylindrical structure. The bottom of the water tank (2) is provided with a water passage (23) that connects the side wall of the inlet (22) and the side wall of the steam passage (21). The float valve assembly (4) is embedded in the lower end of the inlet (22) and connected to the water passage (23).

3. The rapid heating device for water vapor separation according to claim 2, characterized in that, The float valve assembly (4) includes: a hollow valve body (41) embedded in the lower end of the water inlet (22) and abutting against the inner wall of the water inlet (22), the upper end of the valve body (41) being open and the lower end being sealed, and a water passage hole (411) being opened on the side wall corresponding to the water passage (23); an upper sealing plate (42) covering the upper end of the valve body (41), which extends downward and has a sealing port (421); and a float valve (44) movably disposed in the valve body (41) under the action of buoyancy, which abuts against or disengages from the sealing port (421) to close or open the sealing port (421).

4. The water vapor separation rapid heating device according to claim 2 or 3, characterized in that, Also includes: An overflow cover (6) is provided at one end of the water passage (23) corresponding to the steam passage (21).

5. The rapid heating device for water vapor separation according to claim 3, characterized in that, Also includes: A sealing ring (43) is arranged around the outside of the valve body (41) and abuts against the inner wall of the lower end of the water inlet (22).

6. The water vapor separation rapid heating device according to claim 1, characterized in that, The juice receiving tray (5) forms a cylindrical structure on the upper end of the steam channel (21) corresponding to the position of the steam channel (21), and the exhaust hole (51) is opened on the side wall of the cylindrical structure.

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