Steam generating device

Abstract

The invention discloses a steam generating device. The steam generating device comprises a tubular container and a heating layer. The length direction of the tubular container intersects with the horizontal direction, and a steam outlet is formed in the top end of the tubular container. The heating layer is arranged on the outer surface of the tubular container to heat water in the tubular container, so that steam is formed and output from the steam outlet. According to the steam generating device, the tubular container is obliquely arranged, and the steam outlet faces upwards, so that when water in the tubular container is heated, although a steam layer is formed between the inner surface of the tubular container and the water, the steam layer cannot be pressed by the water under the action of gravity, and steam in the steam layer is rapidly discharged through the steam outlet; therefore, the Leidenfrost phenomenon is avoided, dry burning of the tubular container and the heating layer can be avoided without reducing the power of the heating layer, increasing the heating area of the tubular container or increasing a turbulent flow device, and the service life of the steam generating device can be guaranteed while the heating efficiency, miniaturization and low cost are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of steam generation, and in particular to a steam generating device. Background Art

[0002] The steam generating device includes a water pipe and a heating layer on the outer surface of the water pipe. When the heating layer is powered on, it generates heat to heat the water in the water pipe to generate steam. Since the heat flux density of steam is relatively high, a steam layer is formed between the inner surface of the water pipe and the water, which hinders the heat transfer from the heating source to the water, causing the temperature of the heating layer to continue to rise, and it is easy to overheat and burn.

[0003] In the related art, the steam generating device reduces the heating power of the heating source to reduce the temperature of the heating layer, thereby solving the problem of overheating and burning of the heating layer, but there is a problem of reduced steam generation speed. There is also a related art that solves the problem of overheating and burning of the heating layer by increasing the surface area of ​​the water pipe, but there are problems of increased volume and cost of the steam generating device. There is also a related art that solves the problem of overheating and burning of the heating layer by adding a spoiler (such as a spring) in the water pipe to destroy the steam layer, but there are problems such as complex structure, easy scaling, and high maintenance cost. Summary of the invention

[0004] The embodiment of the present invention provides a steam generating device to solve at least one of the above-mentioned technical problems.

[0005] An embodiment of the present invention provides a steam generating device. The steam generating device comprises:

[0006] A tubular container, wherein the length direction of the tubular container intersects with the horizontal direction, and a steam outlet is formed at the top of the tubular container;

[0007] A heating layer is disposed on the outer surface of the tubular container to heat the water in the tubular container, thereby forming water vapor and outputting it from the steam outlet.

[0008] The above-mentioned steam generating device sets the tubular container at an angle and makes the steam outlet upward. In this way, when the water in the tubular container is heated, although a steam layer will be formed between the inner surface of the tubular container and the water, due to the inclined setting of the tubular container, under the action of gravity, the water will not compress the steam layer, and the water vapor in the steam layer will quickly leave and be discharged through the steam outlet, thereby avoiding the Leidenfrost phenomenon. There is no need to reduce the power of the heating layer, increase the heating area of ​​the tubular container or add a turbulent device, so that the phenomenon of dry burning of the tubular container and the heating layer can be avoided. While ensuring heating efficiency, miniaturization and low cost, the service life of the steam generating device can be guaranteed.

[0009] In certain embodiments, the angle formed by the length direction of the tubular container and the horizontal direction is in the range of (45°, 135°).

[0010] In this way, the inclination angle of the tubular container is increased, thereby reducing the obstruction of liquid water to the water vapor output direction, making the stability of the steam layer formed by the inner surface of the tubular container and water poor, thereby solving the problem of dry burning of the heating layer at a lower cost.

[0011] In certain embodiments, the angle formed between the length direction of the tubular container and the horizontal direction is 90°.

[0012] In this way, the length direction of the tubular container is basically perpendicular to the horizontal direction to ensure that the angle setting is the most reasonable, thereby further accelerating the output speed of water vapor, making it impossible for the inner surface of the tubular container and the water to form a stable steam layer, thereby avoiding the phenomenon of dry burning of the heating layer, and the cost is lower.

[0013] In certain embodiments, the heating layer comprises a nano-coating coated on the outer surface of the tubular container.

[0014] In this way, the bonding strength between the heating layer and the tubular container is improved, thereby improving the stability of the heating layer and further ensuring the safety of the steam generating device.

[0015] In certain embodiments, a ratio of an area of ​​the heating layer to an area of ​​an outer surface of the tubular container is greater than two-thirds.

[0016] In this way, it is ensured that the heating layer at least mostly covers the outer surface of the tubular container, so that the heating layer heats the water in the tubular container with a larger power value, while ensuring the miniaturization of the steam generating device and increasing the steam output speed of the steam generating device.

[0017] In certain embodiments, the heating layer is disposed near the bottom end of the tubular container.

[0018] In this way, the water in the tubular container is fully heated, while avoiding the problem of dry burning of the heating layer near the top of the tubular container due to a reduction in water volume, thereby improving safety.

[0019] In some embodiments, the heating layer forms a first geometric center point, the tubular container forms a second geometric center point, and the ratio of the offset distance between the first geometric center point and the second geometric center point to the length of the tubular container is greater than or equal to 5%.

[0020] In this way, the position of the heating layer is reasonably arranged and biased towards the bottom end of the tubular container, thereby ensuring that the heating layer avoids the steam conveying section of the tubular container, thereby reducing the risk of overheating and burning of the heating layer, and having high safety.

[0021] In some embodiments, a water filling port is formed at the bottom end of the tubular container.

[0022] In this way, cold water can be input into the tubular container through the water injection port to convert and provide a target amount of water vapor, which is easy to operate.

[0023] In some embodiments, the steam generating device further includes a controller, a sensor and a water injection valve, wherein the water injection valve is disposed at the water injection port, the sensor is used to detect the height of water in the tubular container, and the controller is configured to control the water injection valve to open when the height of water in the tubular container is lower than a predetermined value, so as to inject water into the tubular container through the water injection port.

[0024] In this way, the water supply of the tubular container is guaranteed, thereby avoiding dry burning of the heating layer and improving safety.

[0025] In certain embodiments, the material of the tubular container includes at least one of glass, ceramic, stainless steel, and carbon fiber.

[0026] In this way, the stability of the tubular container is improved, thereby improving the heat transfer efficiency of the steam generating device, thereby ensuring the safe operation of the steam generating device.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 It is a schematic three-dimensional view of a steam generating device according to an embodiment of the present invention.

[0030] Description of main component reference numerals:

[0031] Steam generating device 10 , tubular container 11 , heating layer 12 , controller 13 , sensor 14 , water injection valve 15 , steam outlet 111 , second geometric center point 112 , water injection port 113 , nano coating 121 , first geometric center point 122 . DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The disclosure herein provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may appreciate the application of other processes and / or the use of other materials.

[0037] See also Figure 1The embodiment of the present invention provides a steam generating device 10. The steam generating device 10 includes a tubular container 11 and a heating layer 12. The length direction of the tubular container 11 intersects with the horizontal direction, and a steam outlet 111 is formed at the top of the tubular container 11. The heating layer 12 is disposed on the outer surface of the tubular container 11 to heat the water in the tubular container 11, thereby forming water vapor and outputting it from the steam outlet 111.

[0038] The steam generating device 10 is configured by tilting the tubular container 11 and pointing the steam outlet 111 upward, that is, the length direction of the tubular container 11 intersects with the horizontal direction. In this way, when the water in the tubular container 11 is heated, although a steam layer is formed between the inner surface of the tubular container 11 and the water, the water will not compress the steam layer under the action of gravity, so that the water vapor in the steam layer quickly leaves and is discharged through the steam outlet 111, thereby avoiding the Leidenfrost phenomenon. There is no need to reduce the power of the heating layer 12, increase the heating area of ​​the tubular container 11, or add a turbulent device, so that the dry burning of the tubular container 11 and the heating layer 12 can be avoided, thereby ensuring the heating efficiency, miniaturization and low cost, and at the same time ensuring the service life of the steam generating device 10.

[0039] Specifically, in one embodiment, the tubular container 11 may be a steam reactor to ensure that water is converted into water vapor through high-temperature evaporation and provided to users, thereby meeting the actual needs of users.

[0040] That is, the tubular container 11 should be made of a material that is resistant to high temperatures, corrosion, and has high thermal conductivity, so as to improve the stability of the steam generating device 10 and thereby ensure that the steam generating device 10 operates normally.

[0041] For example, in some examples, the tubular container 11 includes but is not limited to a quartz tube, a metal tube, etc., and is not specifically limited here.

[0042] In one embodiment, the heating layer 12 includes a heating source and an insulating layer (for example, the heating source may be a heating wire or a conductive coating, and the insulating layer may be an insulating thermally conductive film), and the heating layer 12 matches the shape of the outer surface of the tubular container 11 and the insulating layer is arranged close to the outer surface of the tubular container 11 (for example, Figure 1 ) to ensure that the heating layer 12 can safely and quickly provide heat and heat the water in the tubular container 11, thereby reducing safety risks.

[0043] That is, the heating layer 12 can integrate the heating function and the insulating heat transfer function, and can provide safe heating conditions while improving the assembly efficiency of the heating source and the insulating layer, while ensuring the heat transfer efficiency, thereby ensuring the steam production rate of the steam generating device 10.

[0044] In one embodiment, when water is heated and vaporized to become water vapor without changing its mass, its volume increases and thus its density decreases, so that the water vapor with a lower density moves upward rapidly.

[0045] The heating device in the related technology is placed horizontally (not shown in the figure), so that the water in the heating device will quickly vaporize and produce a steam layer (Leidenfrost phenomenon) when it contacts the horizontally placed high-temperature wall, thereby hindering the water from continuing to transfer heat with the high-temperature wall, and then causing the temperature rise of the high-temperature wall to accumulate, posing a major safety hazard.

[0046] That is, the water layer blocks the upward movement path of the steam layer, so that the steam layer with lower density needs to bypass the water layer on both sides to move upward, thereby ensuring that the water continues to transfer heat with the high-temperature wall surface to further generate steam. However, since the heating device is placed horizontally, the continuity of the water layer is better, and the steam layer is not easy to move upward through the water layer, which makes the heating film easy to overheat and burn, and the safety is poor.

[0047] In one embodiment, if Figure 1 As shown, the length direction of the tubular container 11 of the embodiment of the present invention intersects with the horizontal direction, and a steam outlet 111 is formed at the top of the tubular container 11, that is, the tubular container 11 is at an inclined angle and the steam outlet 111 is arranged upward, so that the water vapor moves up along the steam layer at the inclined angle and is quickly output from the steam outlet 111.

[0048] It can be understood that the length direction of the tubular container 11 intersects with the horizontal direction, so that the tubular container 11 is tilted on the horizontal plane to ensure that the steam layer formed by the contact between the inner surface of the tubular container 11 and the water is tilted upward along the inner surface of the tubular container 11 and is connected with the steam outlet 111 at the top of the tubular container 11. At this time, the water layer cannot block the upward movement path of the steam layer, thereby ensuring that the water vapor in the steam layer can be quickly output along the inner surface of the tubular container 11 through the steam outlet 111, thereby avoiding overheating and burning of the heating layer 12, and having good safety.

[0049] That is, the length direction of the tubular container 11 intersects with the horizontal direction, so that the steam layer formed by the inner surface of the tubular container 11 and water is connected to the steam outlet 111, resulting in poor stability of the steam layer, which makes it easy for the water vapor in the steam layer to be output through the steam outlet 111, thereby ensuring that the inner surface of the tubular container 11 and the water continuously transfer heat to generate water vapor, thereby reducing the dry burning phenomenon of the tubular container 11 and the heating layer 12, and having good safety.

[0050] In summary, the length direction of the tubular container 11 intersects with the horizontal direction, so that the tubular container 11 is set at an inclined angle, thereby ensuring that the steam layer and the steam outlet 111 are connected, facilitating the output of water vapor from the steam outlet 111, and thus avoiding the Leidenfrost phenomenon. There is no need to reduce the power of the heating layer 12, increase the heating area of ​​the tubular container 11, or add a spoiler, so as to meet the requirements of good safety, high power, low cost and miniaturization.

[0051] It is worth noting that the shape, number and size of the steam outlet 111 can be flexibly set according to actual needs and are not specifically limited here.

[0052] In some embodiments, the angle A formed by the length direction of the tubular container 11 and the horizontal direction is in the range of (45°, 135°).

[0053] In this way, the inclination angle of the tubular container 11 is increased, thereby reducing the obstruction of liquid water to the output direction of water vapor, making the stability of the steam layer formed by the inner surface of the tubular container 11 and water poor, thereby solving the problem of dry burning of the heating layer 12 at a lower cost.

[0054] Specifically, in one embodiment, Figure 1 As shown, the tubular container 11 can be a cylindrical water pipe or other pipes to ensure safe and stable output of water vapor, and no specific limitation is made here.

[0055] In one embodiment, the angle A may be the angle formed by the direction of the axial length of the tubular container 11 and the horizontal direction to limit the tilt position of the tubular container 11 , thereby solving the problem of dry burning of the heating layer 12 .

[0056] In one embodiment, the angle A formed by the length direction of the tubular container 11 and the horizontal direction is in the range of (45°, 135°) to ensure that the inclination angle of the tubular container 11 is larger, so that the communication path between the steam layer formed by the inner surface of the tubular container 11 and the water and the steam outlet 111 is wider, thereby ensuring the output speed of water vapor in the steam layer.

[0057] That is, in some examples, the angle A may be 48°, 60°, 75°, 90°, 100°, 120°, 125° or other values ​​between 45° and 135°, without specific limitation herein.

[0058] When the angle formed by the length direction of the tubular container 11 and the horizontal direction exceeds the range of (45°, 135°), the inclination angle of the tubular container 11 is small, so that the communication path between the steam layer formed by the inner surface of the tubular container 11 and the water and the steam outlet 111 is narrow, thereby making the water vapor output speed of the steam layer small. In addition, the tubular container 11 tends to be placed horizontally, which easily causes the heating layer 12 to dry burn, and the safety is poor.

[0059] In some embodiments, the angle A formed by the length direction of the tubular container 11 and the horizontal direction is 90°.

[0060] In this way, the length direction of the tubular container 11 is basically perpendicular to the horizontal direction to ensure that the setting of the angle A is the most reasonable, thereby further accelerating the output speed of water vapor, making it impossible for the inner surface of the tubular container 11 and the water to form a stable steam layer, thereby avoiding the phenomenon of dry burning of the heating layer, and the cost is low.

[0061] Specifically, in one embodiment, preferably, the angle formed by the direction where the axial length of the tubular container 11 is located and the horizontal direction is 90°, thereby ensuring that the axial length of the tubular container 11 is basically perpendicular to the horizontal direction, thereby improving the output speed of water vapor while solving the problem of dry burning of the heating layer 12.

[0062] It can be understood that the angle A formed by the length direction of the tubular container 11 and the horizontal direction is 90°, so that the axial length of the tubular container 11 is basically perpendicular to the horizontal direction, thereby ensuring that the communication path between the steam layer formed by the inner surface of the tubular container 11 and the water and the steam outlet 111 is the widest, while solving the problem of dry burning of the heating layer 12, further accelerating the output speed of water vapor in the steam layer.

[0063] That is, the angle A formed by the length direction of the tubular container 11 and the horizontal direction is 90°, so that the steam layer is connected to the steam outlet 111, while ensuring that the inner surface of the tubular container 11 and the water cannot form a stable steam layer. There is no need to add a spoiler (such as a spring) to destroy the steam layer, which has low cost and good stability and safety.

[0064] In some embodiments, the heating layer 12 includes a nano-coating 121 coated on the outer surface of the tubular container 11 .

[0065] In this way, the bonding strength between the heating layer 12 and the tubular container 11 is improved, thereby improving the stability of the heating layer 12 and further ensuring the safety of the steam generating device 10 .

[0066] Specifically, in one embodiment, the nano-coating 121 can be a heating layer 12 that integrates a heating source and an insulating layer. It can be closely arranged along the outer surface of the tubular container 11 through nano-coating heating technology to enhance the bonding strength between the heating layer 12 and the outer surface of the tubular container 11, thereby improving the heating stability and safety of the heating layer 12.

[0067] That is, the nano-coating 121 may include an electric heating film and an insulating film, wherein the electric heating film can generate heat when electricity is supplied, and the insulating film can conduct heat to the water in the tubular container 11 and form a safe electrically isolated environment to improve the safety and stability of the heating layer 12.

[0068] In one embodiment, the nano-coating 121 can be formed into the heating layer 12 by vacuum evaporation, vacuum sputtering or vacuum ion plating, so that the nano-coating 121 is evenly coated on the outer surface of the tubular container 11, thereby improving the bonding strength between the heating layer 12 and the tubular container 11, and ensuring the heating uniformity and heating speed of the heating layer 12, thereby ensuring the safety of the steam generating device 10 and increasing the steam generation amount.

[0069] In other embodiments, the nano coating 121 may also be formed by other coating methods to improve the bonding strength between the heating layer 12 and the tubular container 11, which is not specifically limited herein.

[0070] In some embodiments, the ratio of the area of ​​the heating layer 12 to the area of ​​the outer surface of the tubular container 11 is greater than two-thirds.

[0071] In this way, it is ensured that at least most of the heating layer 12 covers the outer surface of the tubular container 11, so that the heating layer 12 heats the water in the tubular container 11 with a larger power value, while ensuring the miniaturization of the steam generating device 10 and improving the steam output speed of the steam generating device 10.

[0072] Specifically, in one embodiment, the heating layer 12 should select a suitable heating area to ensure that the water in the tubular container 11 has a high heating power, thereby ensuring the amount of steam generated per unit time.

[0073] In one embodiment, the ratio of the area of ​​the heating layer 12 to the area of ​​the outer surface of the tubular container 11 is greater than two-thirds to ensure that the steam generating device 10 heats the water in the tubular container 11 with a higher power, thereby ensuring the steam output speed.

[0074] That is, without reducing the heating power of the steam generating device 10, the steam generating device 10 is set at an appropriate tilt to solve the problem of overheating and burning of the heating layer 12. At the same time, a heating layer 12 of a suitable area needs to be set to ensure the amount of steam generated per unit time.

[0075] For example, in some examples, the ratio of the area of ​​the heating layer 12 to the area of ​​the outer surface of the tubular container 11 can be 25 / 36, 29 / 36, 31 / 36, 34 / 36, 35 / 36 or other values ​​between 2 / 3 and 1, without specific limitation herein.

[0076] When the ratio of the area of ​​the heating layer 12 to the area of ​​the outer surface of the tubular container 11 is less than 2 / 3, the heating power of the heating layer 12 is small, so that the rate of heating the water in the tubular container 11 to generate water vapor is slow, which is insufficient to meet the user's steam demand.

[0077] In some embodiments, the heating layer 12 is disposed near the bottom end of the tubular container 11 .

[0078] In this way, the water in the tubular container 11 is fully heated, and the problem of dry burning of the heating layer 12 near the top of the tubular container 11 due to a reduction in water volume is avoided, thereby improving safety.

[0079] Specifically, in one embodiment, Figure 1 As shown, the heating layer 12 is disposed near the bottom end of the tubular container 11 to improve the heating efficiency of the water in the tubular container 11, thereby increasing the steam generation speed of the steam generating device 10 to meet the steam quantity requirements of the user.

[0080] In one embodiment, the heating layer 12 is arranged near the bottom end of the tubular container 11, which can be understood as the heating layer 12 being arranged relatively far away from the top end of the tubular container 11 to avoid overheating contact between the heating layer 12 and the high-temperature steam due to a reduction in water volume during the heating process, thereby reducing the problem of dry burning of the heating layer 12 and improving safety.

[0081] In some embodiments, the heating layer 12 forms a first geometric center point 122, the tubular container 11 forms a second geometric center point 112, and the ratio L1 / L of the offset distance L1 between the first geometric center point 122 and the second geometric center point 112 to the length L of the tubular container 11 is greater than or equal to 5%.

[0082] In this way, the heating layer 12 is reasonably arranged and biased toward the bottom end of the tubular container 11, thereby ensuring that the heating layer 12 avoids the steam conveying section of the tubular container 11, thereby reducing the risk of overheating and burning of the heating layer 12, and having high safety.

[0083] Specifically, in one embodiment, Figure 1 As shown, the first geometric center point 122 may be the most central position of the symmetrically distributed heating layer 12 , and may be used to indicate the exact distribution position of the heating layer 12 , which is simple and clear.

[0084] Similarly, in one embodiment, if Figure 1As shown, the second geometric center point 112 may be the most central position of the symmetrically distributed tubular container 11 , and may be used to indicate the exact position of the tubular container 11 , which is simple and clear.

[0085] In one embodiment, the offset distance L1 between the first geometric center point 122 and the second geometric center point 112 can be the distance between the most central position of the heating layer 12 and the most central position of the tubular container 11, so that the heating layer 12 is set toward one end of the tubular container 11, such as the bottom end of the tubular container 11, to improve the heating efficiency of the water in the tubular container 11.

[0086] In one embodiment, if Figure 1 As shown, the ratio L1 / L of the offset distance L1 to the length L of the tubular container 11 is greater than or equal to 5%, so as to ensure that the heating layer 12 is disposed toward the bottom end of the tubular container 11, so that the heating layer 12 is away from the top end of the tubular container 11 to avoid the steam delivery section of the tubular container 11, thereby reducing the phenomenon of dry burning of the heating layer 12.

[0087] The upper limit of the ratio of the offset distance L1 between the first geometric center point 122 and the second geometric center point 112 to the length L of the tubular container 11 can be determined based on empirical values ​​and is not specifically limited here. The ratio is greater than or equal to 5% and satisfies that the ratio of the area of ​​the heating layer 12 to the area of ​​the outer surface of the tubular container 11 is greater than two-thirds.

[0088] In some examples, the ratio L1 / L of the offset distance L1 to the length L of the tubular container 11 may be 5%, 5.2%, 5.5%, 5.7%, 5.8%, 5.9%, 6%, or the like.

[0089] In some embodiments, a water injection port 113 is formed at the bottom end of the tubular container 11 .

[0090] In this way, the tubular container 11 can be fed with cold water through the water injection port 113 to convert and provide a target amount of water vapor, which is easy to operate.

[0091] Specifically, in one embodiment, Figure 1 As shown, the water injection port 113 is arranged at the bottom end of the tubular container 11, so that cold water can be input into the tubular container 11 through the water injection port 113, so that the heating layer arranged near the bottom end of the tubular container 11 evenly heats the cold water, thereby increasing the steam generation speed.

[0092] It can be understood that the steam generating device 10 utilizes the gravity of the water itself to continuously heat the water in the tubular container 11 so that the water is converted into water vapor and output to the top of the tubular container 11, thereby ensuring the generation of a target amount of water vapor and being easy to operate.

[0093] In some embodiments, the steam generating device 10 further includes a controller 13, a sensor 14 and a water injection valve 15. The water injection valve 15 is disposed at the water injection port 113. The sensor 14 is used to detect the height of water in the tubular container 11. The controller 13 is configured to control the water injection valve 15 to open when the height of water in the tubular container 11 is lower than a predetermined value, so as to inject water into the tubular container 11 through the water injection port 113.

[0094] In this way, the water supply of the tubular container 11 is guaranteed, thereby avoiding the dry burning of the heating layer 12, and improving safety.

[0095] Specifically, in one embodiment, the controller 13 is electrically connected to the steam generating device 10 to ensure that the tubular container 11 converts a suitable amount of water into water vapor, thereby ensuring that the steam generating device 10 operates normally.

[0096] In detail, Figure 1 As shown, on the one hand, the controller 13 is electrically connected to the sensor 14 and is used to obtain real-time water volume information of the tubular container 11. On the other hand, the controller 13 is electrically connected to the water injection valve 15, and the water volume information can be used to control the water injection valve 15 to open or close to maintain a relative balance of water volume in the tubular container 11, thereby ensuring the steam generation speed and reducing the overheating and burning phenomenon of the heating layer 12.

[0097] In one embodiment, the predetermined value may be that the height of the water in the tubular container 11 is substantially lower than the end of the heating layer 12 close to the steam outlet 111 , which may be used as an alarm value for when the water level in the tubular container 11 is too low.

[0098] It can be understood that when the water level in the tubular container 11 is lower than the predetermined value, that is, the amount of water in the tubular container 11 is much lower than the end of the heating layer 12 close to the steam outlet 111, the portion of the heating layer 12 in contact with the steam output end is prone to dry burning, resulting in overheating and burning.

[0099] That is, the controller 13 can control the water injection valve 15 to open or close to ensure that the steam generating device 10 works safely.

[0100] For example, the controller 13 controls the amount of water in the tubular container 11 to relatively exceed the end of the heating layer 12 close to the steam outlet 111, thereby avoiding the risk of dry burning of the heating layer 12, thereby improving safety.

[0101] In certain embodiments, the material of the tubular container 11 includes at least one of glass, ceramic, stainless steel, and carbon fiber.

[0102] In this way, the stability of the tubular container 11 is improved, thereby improving the heat transfer efficiency of the steam generating device 10 , thereby ensuring the safe operation of the steam generating device 10 .

[0103] Specifically, in one embodiment, the tubular container 11 should be made of a material with a high melting point far greater than the boiling point of water to ensure safe operation of the steam generating device 10 .

[0104] In one embodiment, the material of the tubular container 11 includes at least one of glass, ceramic, invar and carbon fiber, so that the tubular container 11 has good corrosion resistance, good thermal conductivity and low permeability, thereby improving the stability of the tubular container 11 and ensuring the safe operation of the steam generating device 10.

[0105] In detail, the tubular container 11 may be made of glass material, which has the characteristics of good air tightness, good light transmittance and low thermal expansion coefficient, so as to improve the stability and safety of the steam generating device 10 .

[0106] The tubular container 11 may be made of ceramic material, which has the characteristics of high heat transfer efficiency, good thermal stability and low thermal expansion coefficient, so as to improve the stability and steam generation efficiency of the steam generating device 10 .

[0107] The tubular container 11 can be made of invariable steel (iron-nickel alloy) material, which has the characteristics of a small thermal expansion coefficient or even close to zero. It can ensure that it will not deform within a wide temperature range, that is, it will not expand or contract with temperature changes, which can improve the stability of the steam generating device 10.

[0108] The tubular container 11 may be made of carbon fiber material, which has the characteristics of high thermal efficiency, good thermal stability and low thermal expansion coefficient, so as to improve the stability and steam generation efficiency of the steam generating device 10 .

[0109] In other embodiments, the tubular container 11 may also be made of other materials to improve the stability of the steam generating device 10, which is not specifically limited herein.

[0110] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0111] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steam generating device, characterized in that: The steam generating device comprises: A tubular container, wherein the length direction of the tubular container intersects with the horizontal direction, and a steam outlet is formed at the top of the tubular container; A heating layer is disposed on the outer surface of the tubular container to heat the water in the tubular container, thereby forming water vapor and outputting it from the steam outlet.

2. The steam generating device according to claim 1, characterized in that: The angle formed by the length direction of the tubular container and the horizontal direction is in the range of (45°, 135°).

3. The steam generating device according to claim 2, characterized in that: The angle formed by the length direction of the tubular container and the horizontal direction is 90°.

4. The steam generating device according to claim 1, characterized in that: The heating layer includes a nano-coating film coated on the outer surface of the tubular container.

5. The steam generating device according to claim 1, characterized in that: The ratio of the area of ​​the heating layer to the area of ​​the outer surface of the tubular container is greater than two thirds.

6. The steam generating device according to claim 1, characterized in that: The heating layer is arranged close to the bottom end of the tubular container.

7. The steam generating device according to claim 6, characterized in that: The heating layer forms a first geometric center point, the tubular container forms a second geometric center point, and the ratio of the offset distance between the first geometric center point and the second geometric center point to the length of the tubular container is greater than or equal to 5%.

8. The steam generating device according to claim 1, characterized in that: A water injection port is formed at the bottom end of the tubular container.

9. The steam generating device according to claim 8, characterized in that: The steam generating device further includes a controller, a sensor and a water injection valve, wherein the water injection valve is arranged at the water injection port, the sensor is used to detect the height of water in the tubular container, and the controller is configured to control the water injection valve to open when the height of water in the tubular container is lower than a predetermined value, so as to inject water into the tubular container through the water injection port.

10. The steam generating device according to claim 1, characterized in that: The material of the tubular container includes at least one of glass, ceramic, stainless steel and carbon fiber.

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