Boiler arrangement and steam plant

Abstract

The application provides a boiler device and a steam equipment, relates to the technical field of steam equipment, and aims to solve the technical problem of single path and short fluid channel, which causes local overheating of the boiler. The boiler device is characterized in that a first fluid channel and two second fluid channels arranged on the two sides of the first fluid channel are arranged, and a plurality of sub-channels with opposite flow directions and sequentially connected are arranged in each second fluid channel, thereby forming a circuitous path with alternating directions. The structure of the first fluid channel can significantly prolong the flow path of the fluid in the chamber, increase the heating area and time, and enable the fluid to efficiently, fully and uniformly absorb the heat released by the heating body, thereby avoiding the overheating problem caused by local heat accumulation of the boiler device. The heat radiation surface of the heating body fully covers the bottom of each channel, thereby ensuring uniform heat transfer, and the heat utilization efficiency and safety of the boiler device are improved.

Description

Technical Field

[0001] This application relates to the field of steam equipment technology, and more particularly to a boiler device and steam equipment. Background Technology

[0002] Steam equipment, such as steam cleaners, steam garment steamers, and steam floor scrubbers, has a boiler unit as one of its core components. The boiler unit can quickly heat liquid water and convert it into high-temperature steam to meet the needs of steam-type equipment.

[0003] In related technologies, the boiler device has a sealed chamber and a heating element located at the bottom of the chamber. A fluid channel is arranged in the chamber. The boiler device is provided with a fluid inlet and a steam outlet connected to the fluid channel. The fluid channel extends from one end of the fluid inlet to the other end of the steam outlet. When the boiler device is working, the heating element heats the liquid flowing through the fluid channel, converting it into high-temperature steam.

[0004] However, in related technologies, the fluid channel has the problem of being too single and too short, resulting in insufficient residence time of water in the heating area of ​​the boiler device, insufficient and uneven heating, which can easily cause local overheating of the boiler device and pose a safety hazard. Utility Model Content

[0005] In view of the above problems, this application provides a boiler device and a steam equipment, which aims to extend the path length of the fluid channel in the boiler device so that the fluid such as water is fully and evenly heated, thereby avoiding the problem of local overheating of the boiler device, improving the safety and reliability of the boiler device, maintaining a stable steam volume and improving the thermal energy utilization rate.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] The first aspect of this application provides a boiler apparatus, including: a boiler body and a heating element, wherein the boiler body has a chamber, a fluid inlet and a steam outlet, and the heating element is disposed on the bottom wall of the chamber;

[0008] The chamber is provided with a first fluid channel extending along a first direction and two second fluid channels distributed on both sides of the first fluid channel along a second direction. The inlet end of the first fluid channel is connected to the fluid inlet, and the outlet end of the first fluid channel is connected to the inlet ends of the two second fluid channels respectively. Each second fluid channel includes at least two sequentially connected sub-channels. The fluid directions of two adjacent sub-channels are opposite to form a meandering path with alternating directions. The outlet ends of the two second fluid channels are connected to the steam outlet. The heat radiation surface of the heating element covers the bottom area of ​​the first fluid channel and the two second fluid channels. There is an angle between the first direction and the second direction.

[0009] In the boiler device provided in this application embodiment, by setting a first fluid channel extending along a first direction and two second fluid channels distributed along a second direction, and arranging multiple sub-channels with opposite flow directions and sequential connections in each second fluid channel, a meandering path with alternating directions is formed. By adopting the structure of the first fluid channel diverting to both sides, the flow path of the fluid in the chamber can be significantly extended, increasing the heating area and time. At the same time, it enables the fluid to efficiently, fully, and uniformly absorb the heat released by the heating element, thereby effectively avoiding the overheating problem caused by local heat accumulation in the boiler device. In addition, the heat radiation surface of the heating element fully covers the bottom of each channel, further ensuring the uniform transfer of heat. The thermal energy utilization efficiency and safety of the boiler device are improved, and the generated steam pressure and steam volume are more stable.

[0010] In some embodiments, in each of the second fluid channels, at least two of the sub-channels are arranged sequentially along the second direction.

[0011] This further elongates and regularizes the flow path of the fluid in the second direction, enhancing the turbulence effect within the channel and thus improving the heat exchange rate. At the same time, the compact arrangement of sub-channels along a single direction facilitates the uniform conduction of heat from the heating element, avoids local overheating, and ensures that the fluid is heated more fully and stably, thereby further enhancing the stability of steam output and the thermal energy utilization rate of the boiler unit.

[0012] In some embodiments, the bottom wall of the chamber is provided with two parallel first protrusions spaced apart along the second direction, and the two first protrusions enclose the first fluid channel.

[0013] In this way, the first protrusion can precisely define the boundary and direction of the first fluid channel, enhancing the controllability of the flow. In addition, the first protrusion can improve the structural strength of the bottom wall of the chamber, increase the contact area between the fluid and the chamber, improve the heat exchange efficiency, and thus improve the efficiency and stability of steam generation.

[0014] In some embodiments, along the second direction, the two first protrusions respectively enclose the sidewalls of the adjacent chambers to form two second fluid channels;

[0015] Each of the second fluid channels is provided with at least one second protrusion, which is arranged parallel to the first protrusion, so that at least one second protrusion divides the second fluid channel in which it is located into at least two sub-channels.

[0016] This allows for more precise control over the flow of fluid within the second fluid channel, enhances the structural strength of the chamber floor, increases the contact area between the fluid and the chamber, improves heat exchange efficiency, and thus further enhances the efficiency and stability of steam generation.

[0017] In some embodiments, the end of the first protrusion through which fluid flows has a first flow guiding structure, and the end of the second protrusion through which fluid flows has a second flow guiding structure, wherein both the first flow guiding structure and the second flow guiding structure are arc-shaped structures.

[0018] This significantly reduces the flow resistance when the fluid changes direction within the chamber, reduces energy loss, promotes smoothness and improves transition efficiency when the fluid changes direction within the chamber, thereby further improving the uniformity of fluid distribution and flow continuity, and further enhancing the efficiency and stability of steam generation.

[0019] In some embodiments, the lengths of the first protrusion and the second protrusion are 30mm to 50mm; along the second direction, the widths of the first fluid channel and the sub-channel are both 3mm to 5mm.

[0020] This helps maintain stable fluid flow in the meandering path, facilitates uniform heat transfer from the heating element, and avoids localized overheating.

[0021] In some embodiments, the first protrusion and the second protrusion are at least one of stainless steel protrusion and aluminum alloy protrusion.

[0022] In this way, while ensuring the structural stability and reliability of the first and second convex strips, the thermal conductivity is improved, thereby improving the heat exchange efficiency.

[0023] In some embodiments, the chamber further includes a third fluid channel located upstream of the first fluid channel, with the outlet end of the third fluid channel connected to the inlet end of the first fluid channel, and the fluid inlet connected to the inlet end of the third fluid channel.

[0024] This further extends the flow path and heating time of the fluid within the boiler chamber, and also helps the fluid temperature rise more steadily and evenly, thereby improving the overall stability, dryness, and comprehensive utilization rate of thermal energy in steam output.

[0025] In some embodiments, the third fluid channel has a guide ridge that divides the third fluid channel into a first region and a second region arranged sequentially along the first direction. The first region is located upstream of the second region, and the fluid inlet communicates with the first region. Along the second direction, both ends of the guide ridge have flow-guiding gaps between them and the adjacent sidewalls of the chamber, so that fluid in the first region flows into the second region through the flow-guiding gaps on both sides. The second region communicates with the inlet end of the first fluid channel.

[0026] In this way, before entering the first fluid channel, the fluid first undergoes a change of direction and splitting on both sides in the third fluid channel, which significantly enhances the turbulence and thermal mixing effect of the fluid, destroys the thermal boundary layer, makes the fluid temperature more uniform, and effectively extends the preheating path and residence time, so that the fluid is fully and uniformly preheated. This lays a solid foundation for the efficient and stable vaporization of the fluid in the first and second fluid channels, and improves the overall steam output quality, system thermal efficiency and operational reliability.

[0027] In some embodiments, the guide ridge includes a first arc segment and two second arc segments located at both ends of the first arc segment. The first arc segment bends toward the second region, and the two second arc segments bend toward the first region. The two second arc segments form the flow-guiding gap with their adjacent chamber sidewalls.

[0028] In this way, the guide strips can guide the fluid smoothly and efficiently while reducing flow resistance and energy loss.

[0029] In some embodiments, the chamber further includes a fourth fluid channel located downstream of the two second fluid channels and connected to the outlet ends of the two second fluid channels, and the steam outlet is connected to the outlet end of the fourth fluid channel.

[0030] In this way, the steam gathers in the fourth fluid channel for thorough mixing before flowing out through the steam outlet, which can effectively eliminate the fluctuations in steam flow and pressure in the two second fluid channels, ensuring a high degree of consistency in steam quality and thus improving the steam utilization efficiency of the steam equipment.

[0031] A second aspect of this application provides a steam apparatus, including the boiler apparatus provided in the first aspect.

[0032] The steam equipment provided in this application has the same beneficial effects as the boiler device described above, and will not be repeated here.

[0033] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the boiler device and steam equipment provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the internal structure of a steam device provided in an embodiment of this application;

[0036] Figure 2 This is a top view of the chamber of a boiler unit in a steam equipment provided in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10-Steam equipment; 11-Main body; 12-Nozzle;

[0039] 100 - Boiler unit;

[0040] 110 - Boiler body;

[0041] 120-chamber;

[0042] 121 - First fluid channel;

[0043] 122 - Second fluid channel; 1221 - Sub-channel;

[0044] 123 - Third fluid channel; 1231 - First region; 1232 - Second region; 1233 - Guide gap;

[0045] 124 - Fourth fluid channel;

[0046] 125 - First convex strip; 1251 - First flow guiding structure;

[0047] 126 - Second convex strip; 1261 - Second flow guiding structure;

[0048] 127 - First isolation ridge;

[0049] 128 - Guide convex strip; 1281 - First arc segment; 1282 - Second arc segment;

[0050] 129 - Second isolation ridge;

[0051] 130-fluid inlet;

[0052] 140 - Steam outlet. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0054] This application provides a steam device, including but not limited to steam cleaners, floor scrubbers, steam mops, garment steamers, and irons. One of its core components is a boiler unit, which can rapidly heat liquid water into high-temperature steam to meet the needs of steam-type equipment. In this application embodiment, a steam cleaner will be used as an example for description.

[0055] Steam cleaners, as a highly efficient cleaning tool, are widely used in home and commercial environments. They are suitable for deep cleaning of various hard and soft surfaces such as floors, carpets, kitchen countertops, and bathroom tiles. Their core working principle involves rapidly heating water through a built-in boiler to generate high-temperature, high-pressure steam. The steam's thermal and kinetic energy penetrates dirt, softens grease, and kills microorganisms, thus achieving efficient and environmentally friendly surface cleaning.

[0056] In some embodiments, please refer to Figure 1As shown, the steam device 10 is a steam cleaner, which includes a main body 11 and a built-in boiler device 100. The boiler device 100 has a sealed chamber 120 and a heating element located at the bottom of the chamber 120. A fluid channel is arranged inside the chamber 120, which is usually straight and has a fluid inlet 130 and a steam outlet 140 communicating with the fluid channel. For example, the fluid channel extends from one end of the fluid inlet 130 to one end of the steam outlet 140. A nozzle 12 connected to the steam outlet 140 is mounted on the main body 11. During operation, the heating element heats the liquid flowing through the channel, converting it into high-temperature steam, which is finally sprayed out through the nozzle 12 and applied to the surface to be cleaned.

[0057] In addition, the steam cleaner also has a water tank and a power pump. When the steam cleaner is started, the water in the water tank can enter the chamber 120 through the fluid inlet 130, and be heated and vaporized by the heating element in the chamber 120 to form steam. The power pump can generate suction force or apply pressure to the chamber 120 to increase the steam pressure or draw the steam in the chamber 120 to the nozzle 12 for spraying, so that the steam sprayed onto the surface to be cleaned is high temperature and high pressure, thereby improving the cleaning effect.

[0058] However, in the above embodiments, the boiler device 100 suffers from a single and excessively short fluid channel path design. This results in insufficient residence time of water in the heating area of ​​the boiler device 100, leading to inadequate and uneven heating. This can easily cause localized overheating of the boiler device 100, posing safety hazards and accelerating scale formation and equipment aging. Furthermore, the unstable vaporization process causes large fluctuations in steam pressure and volume, ultimately resulting in poor cleaning performance and low overall thermal efficiency.

[0059] To overcome the above-mentioned defects, this application provides an improved boiler device 100, which aims to extend the path length of the fluid channel in the boiler device 100 so that the fluid such as water is fully and evenly heated, thereby avoiding the problem of local overheating of the boiler device 100, improving the safety and reliability of the boiler device 100, maintaining stable steam output pressure and steam volume, and thus improving the cleaning effect and thermal energy utilization rate.

[0060] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0061] Please refer to Figure 1As shown, the boiler device 100 provided in this application embodiment includes a boiler body 110 and a heating element. The boiler body 110 has a chamber 120, a fluid inlet 130 and a steam outlet 140. The fluid inlet 130 and the steam outlet 140 are respectively connected to the chamber 120. The heating element is disposed on the bottom wall of the chamber 120. For example, the heating element includes, but is not limited to, a heating tube. In this way, the heating element generates heat and can heat the fluid flowing through the chamber 120 to form high-temperature and high-pressure steam, which flows out through the steam outlet 140.

[0062] In this embodiment, the chamber 120 is provided with a complex fluid channel system, which extends the path length of the fluid channel in the boiler device 100 so that the fluid such as water is fully and uniformly heated, thereby achieving full preheating and vaporization of the fluid, thus avoiding the problem of local overheating of the boiler device 100, improving the safety and reliability of the boiler device 100, maintaining stable steam output pressure and steam volume, and thus improving the cleaning effect and thermal energy utilization rate.

[0063] For example, please refer to Figure 2 As shown, the chamber 120 is provided with a first fluid channel 121 extending along a first direction and two second fluid channels 122 distributed on both sides of the first fluid channel 121 along a second direction. The inlet end of the first fluid channel 121 is connected to a fluid inlet 130, and the outlet end of the first fluid channel 121 is connected to the inlet ends of the two second fluid channels 122 respectively. Each second fluid channel 122 includes at least two sequentially connected sub-channels 1221, with the fluid directions of adjacent sub-channels 1221 being opposite to form a meandering path with alternating directions. The outlet ends of both second fluid channels 122 are connected to a steam outlet 140. The heat radiation surface of the heating element covers the bottom area of ​​the first fluid channel 121 and the two second fluid channels 122. The first direction and the second direction have an angle between them. For example, the first direction is, for example, the length direction of the chamber 120, and the second direction is, for example, the width direction of the chamber 120, i.e., the first direction and the second direction are perpendicular to each other. For example, the first direction is as follows: Figure 2 The X direction in the middle, the second direction as... Figure 2 in the Y direction.

[0064] For example, at least two sub-channels 1221 can be arranged sequentially along a first direction, that is, fluid channels in the shape of "Z", "S" or "U" along the first direction; for another example, at least two sub-channels 1221 can also be arranged sequentially along a second direction; for yet another example, at least two sub-channels 1221 can also be arranged sequentially along directions that are at an angle to both the first direction and the first direction; it is understood that by setting at least two sub-channels 1221, the flow path of the fluid can be extended, so that the water can fully absorb heat and achieve uniform heating.

[0065] The direction of fluid flow within the chamber is as follows: Figure 2 The dashed arrow shown.

[0066] Therefore, in the boiler device 100 provided in this application embodiment, by setting a first fluid channel 121 extending along a first direction and two second fluid channels 122 distributed along a second direction, and arranging multiple sub-channels 1221 with opposite flow directions and sequentially connected in each second fluid channel 122, a meandering path with alternating directions is formed. By adopting the structure of the first fluid channel 121 diverting the flow to both sides, the flow path of the fluid in the chamber 120 can be significantly extended, increasing the heating area and time. At the same time, it enables the fluid to efficiently, fully, and uniformly absorb the heat released by the heating element, thereby effectively avoiding the overheating problem caused by local heat accumulation in the boiler device 100, thus improving the overall performance and stability of the steam equipment 10. In addition, the heat radiation surface of the heating element fully covers the bottom of each channel, further ensuring the uniform transfer of heat. The thermal energy utilization efficiency and safety of the boiler device 100 are improved, and the generated steam pressure and steam volume are more stable, which helps to improve the overall cleaning effect of the steam equipment 10.

[0067] It should be noted that, in this embodiment, by respectively setting two second fluid channels 122 on opposite sides of the first fluid channel 121, the flow is diverted from the first fluid channel 121 to the two second fluid channels 122. Furthermore, the second fluid channels 122 have a multi-turn, meandering path. Compared to a single spiral meandering path within the entire cavity, this allows for more uniform distribution of fluid to the meandering paths of the two second fluid channels 122, ensuring consistent flow rate and velocity within the second fluid channels 122. The second fluid channels 122 are all within the heat radiation range of the heating element, further improving the uniformity of heating. This avoids the uneven flow velocity caused by the path difference between the inner and outer rings in a single spiral fluid channel, resulting in insufficient heat exchange and causing local overheating of the boiler device 100. Therefore, by setting the two second fluid channels 122 on opposite sides of the first fluid channel 121, this embodiment fundamentally eliminates the problem of local overheating caused by asymmetrical flow paths and uneven heating, greatly improving the safety, reliability and service life of the boiler device 100.

[0068] In some embodiments, such as Figure 2As shown, in each of the second fluid channels 122, at least two sub-channels 1221 are arranged sequentially along the second direction. This further elongates and regularizes the flow path of the fluid in the second direction, enhancing the turbulence effect within the channel and thus improving the heat exchange rate. At the same time, the compact arrangement of the sub-channels 1221 along a single direction utilizes the uniform conduction of heat from the heating element to avoid local overheating and ensure that the fluid is heated more fully and stably, thereby further enhancing the stability of steam output and the thermal energy utilization rate of the boiler device 100.

[0069] In other words, such as Figure 2 As shown, at least two sub-channels 1221 are arranged parallel to the first channel and sequentially along the second direction. The first fluid channel 121 is located at the symmetrical center of the chamber 120 in the second direction, and two second fluid channels 122 are symmetrically arranged on opposite sides of the first fluid channel 121. This improves the regularity of fluid flow in the second direction, reduces the structural complexity of the fluid channel system, and ensures that the fluid is heated more fully and stably, thereby further enhancing the stability of steam output and the thermal energy utilization rate of the boiler device 100, while reducing equipment costs and improving cost-effectiveness and economy.

[0070] In some embodiments, please refer to Figure 2 As shown, the bottom wall of the chamber 120 is provided with two parallel first protrusions 125 spaced apart along the second direction. The two first protrusions 125 enclose a first fluid channel 121. In this way, the first protrusions 125 can precisely define the boundary and direction of the first fluid channel 121, enhancing the controllability of the flow. In addition, the first protrusions 125 can improve the structural strength of the bottom wall of the chamber 120, increase the contact area between the fluid and the chamber 120, improve the heat exchange efficiency, and thus improve the efficiency and stability of steam generation.

[0071] like Figure 2 As shown, along the second direction, two first protrusions 125 respectively enclose the sidewalls of their adjacent chambers 120 to form two second fluid channels 122; each second fluid channel 122 is provided with at least one second protrusion 126, which is arranged parallel to the first protrusions 125, so that at least one second protrusion 126 divides the second fluid channel 122 in which it is located into at least two sub-channels 1221. In this way, the controllability of fluid flow in the second fluid channel 122 can be further precisely controlled, the structural strength of the bottom wall of the chamber 120 can be improved, the contact area between the fluid and the chamber 120 can be increased, the heat exchange efficiency can be improved, and thus the efficiency and stability of steam generation can be further improved.

[0072] The first protrusion 125 and the second protrusion 126 can be integrally formed with the chamber 120. Both the first protrusion 125 and the second protrusion 126 are made of materials with strong thermal conductivity and good heat resistance. For example, the first protrusion 125 and the second protrusion 126 are at least one of stainless steel protrusions and aluminum alloy protrusions. In this way, while ensuring the structural stability and reliability of the first protrusion 125 and the second protrusion 126, the thermal conductivity is improved, thereby improving the heat exchange efficiency.

[0073] Please continue to refer to Figure 2 As shown, the end of the first protrusion 125 through which the fluid flows has a first guide structure 1251, and the end of the second protrusion 126 through which the fluid flows has a second guide structure 1261. Both the first guide structure 1251 and the second guide structure 1261 are arc-shaped structures. For example, both the first guide structure 1251 and the second guide structure 1261 are circular arc or elliptical arc guide structures. In this way, the flow resistance when the fluid turns in the chamber 120 can be significantly reduced, energy loss can be reduced, the smoothness of the fluid when changing the flow direction in the chamber 120 can be promoted, and the transition efficiency can be improved. This further improves the uniformity of fluid distribution and the continuity of flow, and further enhances the efficiency and stability of steam generation.

[0074] For example, the lengths of the first protrusion 125 and the second protrusion 126 are 30mm to 50mm. For example, the lengths of the first protrusion 125 and the second protrusion 126 are 30mm, 35mm, 40mm, 45mm, 50mm, etc., so that the water can fully contact the area covered by the heating element during the flow process, and prolong the heating time. Along the second direction, the widths of the first fluid channel 121 and the sub-channel 1221 are both 3mm to 5mm. For example, the widths of the first fluid channel 121 and the sub-channel 1221 are both 3mm, 3.5mm, 4mm, 4.5mm, and 5mm, etc., so as to ensure smooth water flow, help maintain stable fluid flow in the meandering path, utilize the uniform conduction of heat from the heating element, and avoid local overheating.

[0075] Please continue to refer to Figure 2 As shown, the chamber 120 also has a third fluid channel 123, which is located upstream of the first fluid channel 121. The outlet end of the third fluid channel 123 is connected to the inlet end of the first fluid channel 121, and the fluid inlet 130 is connected to the inlet end of the third fluid channel 123. This further extends the flow path and heating time of the fluid in the boiler chamber 120, and also helps the fluid temperature to rise more steadily and evenly, thereby improving the overall steam output stability, dryness and comprehensive heat energy utilization rate.

[0076] The third fluid channel 123 can serve as a preheating channel for the fluid. In this way, the fluid can be fully preheated in the third fluid channel 123 first, and then fully heated in the first fluid channel 121 and the second fluid channel 122, thereby further improving the overall stability of steam output, dryness and comprehensive utilization rate of thermal energy.

[0077] like Figure 2 As shown, along the first direction, a first isolation ridge 127 is provided between the third fluid channel 123, the first fluid channel 121, and the two second fluid channels 122. The first isolation ridge 127 is along the second direction (e.g., ...). Figure 2 The third fluid channel 123 extends in the Y direction and is connected to the side wall of the chamber 120 at both ends. The first isolation protrusion 127 has an opening at the position corresponding to the first fluid channel 121 so that the third fluid channel 123 is connected to the first fluid channel 121. This allows the fluid entering the third fluid channel 123 to flow into the first fluid channel 121 through the opening, and then enter the second fluid channel 122 through the first fluid channel 121. In this way, the controllability of the fluid flow in the chamber 120 can be further precisely controlled. At the same time, the structural strength of the bottom wall of the chamber 120 is improved, the contact area between the fluid and the chamber 120 is increased, and the heat exchange efficiency is improved, thereby further improving the efficiency and stability of steam generation.

[0078] In some embodiments, such as Figure 2 As shown, the third fluid channel 123 has a guide ridge 128, which divides the third fluid channel 123 into a first region 1231 and a second region 1232 arranged sequentially along a first direction. The first region 1231 is located upstream of the second region 1232. The fluid inlet 130 is connected to the first region 1231. Along the second direction, the two ends of the guide ridge 128 have flow guide gaps 1233 between them and the sidewalls of the adjacent chamber 120, so that the fluid in the first region 1231 flows into the second region 1232 through the flow guide gaps 1233 on both sides. The second region 1232 is connected to the inlet end of the first fluid channel 121.

[0079] In this way, before entering the first fluid channel 121, the fluid first undergoes a change of direction and splitting on both sides in the third fluid channel 123, which significantly enhances the turbulence and thermal mixing effect of the fluid, destroys the thermal boundary layer, makes the fluid temperature more uniform, and effectively extends the preheating path and residence time, so that the fluid is fully and uniformly preheated. This lays a solid foundation for the efficient and stable vaporization of the fluid in the first fluid channel 121 and the second fluid channel 122, and improves the overall steam output quality, system thermal efficiency and operational reliability.

[0080] Please continue to refer to Figure 2As shown, the guide rib 128 includes a first arc-shaped segment 1281 and two second arc-shaped segments 1282 located at both ends of the first arc-shaped segment 1281. The first arc-shaped segment 1281 bends toward the second region 1232, and the two second arc-shaped segments 1282 bend toward the first region 1231. A flow guiding gap 1233 is formed between the two second arc-shaped segments 1282 and the adjacent sidewall of the chamber 120. In this way, the guide rib 128 can guide the fluid smoothly and efficiently while reducing flow resistance and energy loss.

[0081] In some embodiments, such as Figure 2 As shown, the chamber 120 also has a fourth fluid channel 124, which is located downstream of the two second fluid channels 122 and connected to the outlet ends of the two second fluid channels 122. The steam outlet 140 is connected to the outlet end of the fourth fluid channel 124. In this way, the steam gathers in the fourth fluid channel 124 and is fully mixed before flowing out through the steam outlet 140. This can effectively eliminate the fluctuations in steam flow and pressure in the two second fluid channels 122, so as to ensure a high degree of consistency in steam quality, thereby improving the steam utilization efficiency and overall cleaning effect of the steam equipment 10.

[0082] For example, such as Figure 2 As shown, a second isolation ridge 129 is provided between the first fluid channel 121, the second fluid channel 122, and the fourth fluid channel 124. The second isolation ridge 129 is along a second direction (e.g., Figure 2 The second isolation protrusion 129 extends in the Y direction and has gaps between its two ends and the side walls of the adjacent chamber 120, so that the outlet ends of the two second fluid channels 122 are connected to the fourth fluid channel 124 through their corresponding gaps. In this way, the steam in the two second fluid channels 122 is gathered in the fourth fluid channel 124 and then discharged through the steam outlet 140 and sprayed onto the surface to be cleaned by the nozzle 12 in the steam cleaner.

[0083] The first isolation protrusion 127 and the second isolation protrusion 129 can both enhance the structural strength of the bottom wall of the chamber 120. The first isolation protrusion 127 and the second isolation protrusion 129 can both be made of materials with good thermal conductivity and heat resistance, such as stainless steel or aluminum alloy, to improve heat transfer efficiency and ensure that the fluid can absorb heat quickly and evenly.

[0084] Therefore, in the specific implementation of the steam equipment provided in this application embodiment, when the steam cleaner is started, water enters the third fluid channel from the fluid inlet, then enters the first fluid channel through the third fluid channel, and then flows to both sides through the first fluid channel to enter the second fluid channels on both sides respectively. Since the second fluid channel has a serpentine structure with multiple turns, the water will pass through the straight sections and bends of each second convex bar in sequence during the flow process. In this process, the water is in full contact with the heating area in the boiler (i.e., the area covered by the heating element) and continuously absorbs heat. As the water flows and is heated in the chamber, it gradually rises in temperature and is converted into steam, and finally flows out from the steam outlet for use by the steam cleaner. In the whole process, the multi-turn flow channel design ensures that the water can be fully heated, avoids local overheating, effectively controls the temperature rise of the boiler, and keeps it within a reasonable range.

[0085] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0086] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0087] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0088] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A boiler apparatus, comprising: The boiler body (110) has a chamber (120), a fluid inlet (130) and a steam outlet (140), and the heating element is disposed on the bottom wall of the chamber (120). Its features are, The chamber (120) is provided with a first fluid channel (121) extending along a first direction and two second fluid channels (122) distributed on both sides of the first fluid channel (121) along a second direction. The inlet end of the first fluid channel (121) is connected to the fluid inlet (130), and the outlet end of the first fluid channel (121) is connected to the inlet end of the two second fluid channels (122) respectively. Each second fluid channel (122) includes at least two sequentially connected sub-channels (1221). The fluid directions of two adjacent sub-channels (1221) are opposite to form a meandering path with alternating directions. The outlet ends of the two second fluid channels (122) are connected to the steam outlet (140). The heat radiation surface of the heating element covers the bottom area of ​​the first fluid channel (121) and the two second fluid channels (122). There is an angle between the first direction and the second direction.

2. The boiler apparatus according to claim 1, characterized in that, In each of the second fluid channels (122), at least two of the sub-channels (1221) are arranged sequentially along the second direction.

3. The boiler apparatus according to claim 2, characterized in that, The bottom wall of the chamber (120) is provided with two parallel first protrusions (125) spaced apart along the second direction, and the two first protrusions (125) enclose the first fluid channel (121).

4. The boiler apparatus according to claim 3, characterized in that, Along the second direction, the two first protrusions (125) respectively enclose the sidewalls of the adjacent chambers (120) to form two second fluid channels (122); Each of the second fluid channels (122) is provided with at least one second protrusion (126), which is arranged parallel to the first protrusion (125) so that at least one second protrusion (126) divides the second fluid channel (122) in which it is located to form at least two sub-channels (1221).

5. The boiler apparatus according to claim 4, characterized in that, The first protrusion (125) has a first flow guide structure (1251) at the end through which fluid flows, and the second protrusion (126) has a second flow guide structure (1261) at the end through which fluid flows, wherein both the first flow guide structure (1251) and the second flow guide structure (1261) are arc-shaped structures; and / or, The lengths of the first protrusion (125) and the second protrusion (126) are 30mm to 50mm; along the second direction, the widths of the first fluid channel (121) and the sub-channel (1221) are both 3mm to 5mm; and / or The first protrusion (125) and the second protrusion (126) are at least one of stainless steel protrusion and aluminum alloy protrusion.

6. The boiler apparatus according to any one of claims 1-5, characterized in that, The chamber (120) also has a third fluid channel (123), which is located upstream of the first fluid channel (121). The outlet end of the third fluid channel (123) is connected to the inlet end of the first fluid channel (121), and the fluid inlet (130) is connected to the inlet end of the third fluid channel (123).

7. The boiler apparatus according to claim 6, characterized in that, The third fluid channel (123) has a guide ridge (128) that divides the third fluid channel (123) into a first region (1231) and a second region (1232) arranged sequentially along the first direction. The first region (1231) is located upstream of the second region (1232). The fluid inlet (130) is connected to the first region (1231). Along the second direction, the two ends of the guide ridge (128) have flow guide gaps (1233) between them and the adjacent sidewalls of the chamber (120), so that the fluid in the first region (1231) flows into the second region (1232) through the flow guide gaps (1233) on both sides. The second region (1232) is connected to the inlet end of the first fluid channel (121).

8. The boiler apparatus according to claim 7, characterized in that, The guide ridge (128) includes a first arc-shaped segment (1281) and two second arc-shaped segments (1282) located at both ends of the first arc-shaped segment (1281). The first arc-shaped segment (1281) bends toward the second region (1232), and the two second arc-shaped segments (1282) bend toward the first region (1231). The two second arc-shaped segments (1282) form the flow guide gap (1233) between themselves and the adjacent sidewall of the chamber (120).

9. The boiler apparatus according to any one of claims 1-5, characterized in that, The chamber (120) also has a fourth fluid channel (124), which is located downstream of the two second fluid channels (122) and is connected to the outlet end of the two second fluid channels (122). The steam outlet (140) is connected to the outlet end of the fourth fluid channel (124).

10. A steam equipment, characterized in that, The boiler apparatus includes any one of claims 1-9.

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