Steam generating structure and cleaning apparatus

Abstract

The application provides a steam generation structure and a cleaning equipment, and belongs to the technical field of steam generators. The steam generation structure comprises a heating piece and a heating body. The heating body is provided with a steam port. The heating body is provided with a first steam flow channel and a second steam flow channel in a laminated manner. The first steam flow channel corresponds to part of the heating piece. The second steam flow channel comprises a first sub-steam flow channel and a second sub-steam flow channel which are in communication with each other. The heating piece is arranged in the heating body. The first sub-steam flow channel is located in an area surrounded by the heating piece. The second sub-steam flow channel is located outside the area surrounded by the heating piece. The first steam flow channel is in communication with the first sub-steam flow channel. The second sub-steam flow channel is in communication with the steam port. The steam generation structure provided by the application can make the water flow or water-vapor mixture fully contact with multiple surfaces of the heating piece during the flowing process, thereby being beneficial to prolonging the contact time between the water and the heating piece, increasing the heat exchange area, reducing the heat transfer thermal resistance, and improving the heat transfer efficiency.

Description

Technical Field

[0001] This application relates to the field of steam generator technology, and more particularly to a steam generating structure and cleaning equipment. Background Technology

[0002] A steam generator is a device that uses thermal energy to heat water to a vaporized state to produce steam. It can be used in cleaning equipment such as garment steamers, floor scrubbers, and kitchen cleaning machines.

[0003] In related technologies, a steam generator includes a heating shell and a heating tube disposed inside the heating shell. The heating tube heats the water entering the heating shell to generate steam.

[0004] However, when the aforementioned heating tubes heat water, some heating tube surfaces may not be fully wetted by water or the water retention time may be short, resulting in the heating tubes' heat not being effectively transferred to the water, leading to high thermal resistance and low heat transfer efficiency. Utility Model Content

[0005] This application provides a steam generating structure and a cleaning device to address the shortcomings of related technologies.

[0006] On one hand, this application provides a steam generating structure, including a heating element and a heating body; the heating body has a steam port, and the heating body is stacked with a first steam flow channel and a second steam flow channel, the first steam flow channel corresponds to a portion of the heating element, the second steam flow channel includes a first sub-steam flow channel and a second sub-steam flow channel that are interconnected, the heating element is disposed within the heating body, the first sub-steam flow channel is located within the area enclosed by the heating element, the second sub-steam flow channel is located outside the area enclosed by the heating element, the first steam flow channel is connected to the first sub-steam flow channel, and the second sub-steam flow channel is connected to the steam port.

[0007] Thus, during operation, the water in the first steam channel is initially heated by the heating element and enters the first sub-steam channel. It then transforms into steam and flows into the second sub-steam channel, finally exiting through the steam outlet. During the heating process, because the first steam channel corresponds to a portion of the heating element, the first sub-steam channel is located within the area enclosed by the heating element, while the second sub-steam channel is located outside this area. This allows the water or water-steam mixture to fully contact multiple surfaces of the heating element during its flow, thereby extending the contact time between the water and the heating element and increasing the heat exchange area. This, in turn, reduces thermal resistance and improves heat transfer efficiency.

[0008] In one possible implementation, the steam generating structure provided in this application further includes a third sub-steam channel in the second steam channel. The third sub-steam channel corresponds to a portion of the heating element. The third sub-steam channel and the first steam channel are located on opposite sides of the heating element, and the third sub-steam channel connects the first sub-steam channel and the second sub-steam channel.

[0009] In this way, the third sub-steam channel area is located within the thermal effect range of the heating element and can be directly affected by the heat released by the heating element, extending the steam flow path. By cooperating with the first steam channel, the first sub-steam channel and the second sub-steam channel, all surfaces of the heating element can be fully utilized, reducing thermal resistance, improving heat transfer efficiency, and ensuring the stability of steam output.

[0010] In one possible implementation, the steam generating structure provided in this application includes two shells that are joined together. The shells have grooves that match the heating element and are used to accommodate the heating element. The shells are provided with a plurality of first baffles on the inner side of the area enclosed by the grooves, and each first baffle forms a first sub-steam channel. The shells are provided with a plurality of second baffles on the outer side of the area enclosed by the grooves, and each second baffle forms a second sub-steam channel.

[0011] Thus, the heating element adopts a split structure design, consisting of two interlocking shells, which facilitates the assembly of internal flow channels and heating elements, while improving the overall structure's sealing and manufacturability.

[0012] In one possible implementation, the steam generating structure provided in this application has a first steam flow channel and a third sub-steam flow channel arranged one-to-one on opposite sides of two shells.

[0013] In this way, by making reasonable use of the overall spatial volume of the heating element to arrange the first steam channel and the third sub-steam channel, the heating element can contact the channel walls of the first steam channel and the third sub-steam channel on both sides of the stacking direction, respectively, to achieve efficient heat exchange in a compact structure.

[0014] In one possible implementation, the steam generating structure provided in this application has at least one first liquid distribution port on one of the two shells, the first liquid distribution port connecting a first steam flow channel and a first sub-steam flow channel; and a second liquid distribution port and at least one third liquid distribution port on the other of the two shells, the second liquid distribution port connecting a first sub-steam flow channel and a third sub-steam flow channel, and the third liquid distribution port connecting a third sub-steam flow channel and a second sub-steam flow channel.

[0015] In this way, through the synergistic effect of the first, second, and third liquid outlets, a smooth connection is achieved throughout the entire process from water intake, preheating, centralized vaporization to steam output. This avoids problems such as short-circuit flow, stagnation, or local dry burning, and significantly improves the thermal response speed, heat transfer efficiency, and operational reliability of the steam generation structure.

[0016] In one possible implementation, the steam generating structure provided in this application has a steam port located above the second and third liquid distribution ports, and a first liquid distribution port located above the steam port.

[0017] In this way, the spatial position of the heating element can be utilized more fully, allowing the flow channels and liquid outlets inside the heating element to be staggered in three-dimensional space. Since the density of steam is lower than that of liquid water, it will naturally accumulate at higher positions during the heating process. By placing the steam outlet above the third and second liquid outlets, the steam in the second sub-steam flow channel can flow along the upward path, which helps to reduce flow resistance, prevent steam from accumulating or flowing back at lower positions, and ensure that the generated steam can be output quickly and efficiently.

[0018] In one possible implementation, the steam generating structure provided in this application has clearance grooves on both shells, and cover plates are provided on the clearance grooves. Multiple third baffles are arranged at intervals in the clearance grooves. Each third baffle in one clearance groove forms a first steam flow channel, and each third baffle in the other clearance groove forms a third sub-steam flow channel. A water inlet is provided on the cover plate corresponding to the first steam flow channel, and the water inlet is connected to the first steam flow channel.

[0019] Thus, by setting clearance grooves with third baffles on the two shells respectively, the independent construction of the first steam flow channel and the third sub-steam flow channel is realized. The first steam flow channel and the third sub-steam flow channel are located on the opposite outer side of the heating element along the stacking direction, which is conducive to the full utilization of space and the rational distribution of the heat field.

[0020] In one possible implementation, the steam generating structure provided in this application includes a heating element comprising at least one curved portion and at least two connecting portions, wherein the connecting portions and the curved portions are alternately arranged in sequence along the extension direction of the heating element, the orientation of two adjacent curved portions is opposite, and the two adjacent curved portions are connected by a connecting portion.

[0021] In this way, by alternating the bending and connecting parts, the heating element can extend its heating length without increasing the overall volume, achieving a more uniform and efficient heating effect, while reducing the risk of local overheating and improving the thermal response speed and operational stability of the steam generation structure.

[0022] In one possible implementation, the steam generating structure provided in this application has the water inlet and steam outlet located on the same side of the heating element.

[0023] This allows external water supply lines and steam output lines to be connected and led out from the same direction, which helps simplify the internal pipeline layout of the equipment, reduce the crossing and bending of connecting pipelines, and improve assembly efficiency.

[0024] Alternatively, the water inlet and steam outlet are located on opposite sides of the heating element.

[0025] By separating the water inlet and steam outlet on opposite sides, the direct contact between cold water and high-temperature steam near the steam outlet can be effectively avoided, which helps to reduce thermal shock and local condensation, thereby producing steam with higher dryness and more stable temperature.

[0026] On the other hand, this application provides a cleaning device, including a device body and a steam generating structure, as described above, disposed on the device body.

[0027] Thus, cleaning equipment equipped with any of the above-mentioned steam generation structures can reduce heat transfer resistance, improve heat transfer efficiency, and reduce the impact on the response speed, energy efficiency, and service life of cleaning equipment such as garment steamers, floor scrubbers, and kitchen cleaning machines.

[0028] 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 steam generating structure and cleaning equipment provided by 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 embodiments. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] Figure 1 This is a schematic diagram of the steam generating structure provided in the embodiments of this application;

[0031] Figure 2 for Figure 1 Another structural diagram;

[0032] Figure 3 This is a schematic diagram of the steam flow path in the first steam channel during the heating process of the heating element.

[0033] Figure 4 This is a schematic diagram of the steam flow path in the first sub-steam channel during the heating process of the heating element.

[0034] Figure 5 This is a schematic diagram of the steam flow path in the third sub-steam channel during the heating process of the heating element.

[0035] Figure 6 This is a schematic diagram of the steam flow path in the second sub-steam channel during the heating process of the heating element.

[0036] Figure 7 for Figure 2 Exploded view;

[0037] Figure 8 for Figure 7 A structural diagram from another angle.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Steam generation structure;

[0040] 110. Heating element; 111. Bending part; 112. Connecting part;

[0041] 120. Heating element; 121. Housing; 1211. Groove; 1212. First liquid outlet; 1213. Second liquid outlet; 1214. Third liquid outlet; 1215. Clearance groove; 122. First baffle; 123. Second baffle; 124. Third baffle; 125. Cover plate; 126. Water inlet; 127. Steam inlet; 128. First steam channel; 1291. First sub-steam channel; 1292. Second sub-steam channel; 1293. Third sub-steam channel. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0046] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0047] A steam generator is a device that uses thermal energy to heat water to a vaporized state to produce steam. It can be used in cleaning equipment such as garment steamers, floor scrubbers, and kitchen cleaning machines.

[0048] In related technologies, a steam generator includes a heating shell and a heating tube disposed inside the heating shell. The heating tube heats the water entering the heating shell to generate steam.

[0049] However, when the aforementioned heating tubes heat water, some heating tube surfaces may not be fully wetted by water or the water retention time may be short, resulting in the heating tubes' heat not being effectively transferred to the water, leading to high thermal resistance and low heat transfer efficiency.

[0050] Specifically, the water entering the heating element typically flows in a unidirectional, straight-through manner, with a short flow path. Therefore, the water tends to flow quickly from the inlet to the outlet, failing to fully cover and flush the entire surface of the heating element. This short-flow pattern limits the contact time and effective heat exchange area between the water and the heating element, especially at the far end of the heating element, at bends, or in areas away from the main flow direction, easily creating weak heat exchange zones.

[0051] Meanwhile, due to the high water flow rate, some areas of water are vaporized or discharged before they have fully absorbed heat, leading to insufficient heat transfer in some areas and potential overheating in others. Consequently, this results in heat buildup in some areas of the heating element, decreased heat transfer efficiency, and increased overall thermal resistance. This, in turn, affects the response speed, energy efficiency, and lifespan of cleaning equipment such as garment steamers, floor scrubbers, and kitchen cleaning machines.

[0052] In view of this, embodiments of this application provide a steam generating structure and a cleaning device. The steam generating structure is provided with a heating element and a heating body. The heating body has a steam port. The heating body is stacked with a first steam channel and a second steam channel. The first steam channel corresponds to a portion of the heating element. The second steam channel includes a first sub-steam channel and a second sub-steam channel that are interconnected. The heating element is disposed within the heating body. The first sub-steam channel is located within the area enclosed by the heating element. The second sub-steam channel is located outside the area enclosed by the heating element. The first steam channel is connected to the first sub-steam channel. The second sub-steam channel is connected to the steam port.

[0053] Thus, during operation, the water in the first steam channel is initially heated by the heating element and enters the first sub-steam channel. It then transforms into steam and flows into the second sub-steam channel, finally exiting through the steam outlet. During the heating process, because the first steam channel corresponds to a portion of the heating element, the first sub-steam channel is located within the area enclosed by the heating element, while the second sub-steam channel is located outside this area. This allows the water or water-steam mixture to fully contact multiple surfaces of the heating element during its flow, thereby extending the contact time between the water and the heating element and increasing the heat exchange area. This, in turn, reduces thermal resistance and improves heat transfer efficiency.

[0054] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0055] Reference Figures 1 to 6 As shown, the steam generating structure 100 provided in this embodiment includes a heating element 110 and a heating body 120. The heating body 120 has a steam port 127. The heating body 120 is stacked with a first steam channel 128 and a second steam channel. The first steam channel 128 corresponds to a portion of the heating element 110. The second steam channel includes a first sub-steam channel 1291 and a second sub-steam channel 1292 that are interconnected. The heating element 110 is disposed inside the heating body 120. The first sub-steam channel 1291 is located within the area enclosed by the heating element 110, and the second sub-steam channel 1292 is located outside the area enclosed by the heating element 110. The first steam channel 128 is connected to the first sub-steam channel 1291, and the second sub-steam channel 1292 is connected to the steam port 127.

[0056] It should be noted that the steam generating structure 100 in this application embodiment is applied in cleaning equipment. The cleaning equipment can be a garment steamer, such as a traditional garment steamer or a suction steamer, or it can also be a fabric cleaning machine, floor scrubber, or kitchen cleaning machine with steam generation function. This application embodiment does not limit this.

[0057] The heating element 120, as the core component for containing and guiding water flow, is equipped with a steam port 127 for discharging the generated steam. The heating element 120 includes a first steam channel 128 and a second steam channel stacked together, forming a channel system that is independent yet orderly connected.

[0058] Here, the stacking direction can be referenced. Figure 2 The Z direction in the equation.

[0059] Specifically, the first steam channel 128 primarily serves to guide the initial water flow and provide preliminary heating. It is connected to the first sub-steam channel 1291 within the second steam channel to facilitate the orderly transfer of water between the different channels. The second steam channel includes the interconnected first sub-steam channel 1291 and second sub-steam channel 1292, forming the main channel for steam generation and output. The second sub-steam channel 1292 is connected to the steam outlet 127 to ensure the smooth discharge of the generated steam.

[0060] Furthermore, the heating element 110, as a heat source component, is disposed within the heating element 120. The heating element 110 can be electrically connected to the cleaning equipment or an external power supply or control system to convert electrical energy into heat energy. For example, the heating element 110 can be a resistance heating element, and its shape can be adapted to the internal space of the heating element 120, such as being annular, U-shaped, or having a multi-segment bent structure, to form a specific heating area within the heating element 120.

[0061] It is understood that the heating element 110 constructs a three-dimensional heating structure through the outer and inner surfaces of the enclosing area and two surfaces in the stacking direction. Specifically, the first steam channel 128 is correspondingly positioned with a portion of the heating element 110, such that the channel wall of the first steam channel 128 contacts one surface of the heating element 110 in the stacking direction. The first sub-steam channel 1291 of the first steam channel 128 is positioned within the enclosing area of ​​the heating element 110, while the second sub-steam channel 1292 is located outside the enclosing area of ​​the heating element 110. This allows the first and second sub-steam channels 1291 and 1292 to surround the heating element 110, ensuring that the channel walls of the first and second sub-steam channels 1291 and 1292 respectively contact the inner and outer surfaces of the enclosing area of ​​the heating element 110.

[0062] Therefore, when the heating element 110 is powered on, its surface heats up rapidly. The multiple surfaces of the heating element 110, namely the outer surface, inner surface and one surface in the stacking direction of the area, are used as the corresponding contacting flow channel walls for heat transfer, so that the flowing water or water vapor mixture can fully absorb the heat energy of the heating element 110, thereby improving the uniformity and efficiency of heat transfer.

[0063] It should be noted that during operation, the water in the first steam channel 128 has not yet undergone substantial vaporization; its primary function is preheating. Since the first steam channel 128 is correspondingly positioned with some of the heating elements 110, the water begins to absorb heat during its flow. Subsequently, the preheated water flows into the first sub-steam channel 1291, located within the area enclosed by the heating elements 110. In this area, the water is concentratedly heated, rapidly undergoing a phase change and generating a large amount of steam. Due to its high heat flux density and large heat exchange area, this region enables rapid and stable steam generation.

[0064] Furthermore, the generated steam then enters the second sub-steam channel 1292. Although this channel is located outside the area enclosed by the heating element 110, it is still within the heat-affected zone of the heating element 120, allowing for further superheating of the steam and ensuring that the output steam has high dryness and temperature stability. Finally, the steam is collected through the second sub-steam channel 1292 to the steam port 127 and discharged for use by external cleaning equipment.

[0065] In summary, the steam generating structure 100 provided in this application embodiment, during operation, the water in the first steam channel 128 is initially heated by the heating element 110 and enters the first sub-steam channel 1291, then converts into steam and flows into the second sub-steam channel 1292, and finally exits from the steam port 127. During the heating process of the heating element 110, since the first steam channel 128 corresponds to a portion of the heating element 110, the first sub-steam channel 1291 is located within the area enclosed by the heating element 110, and the second sub-steam channel 1292 is located outside the area enclosed by the heating element 110, the water flow or water-steam mixture can fully contact multiple surfaces of the heating element 110 during the flow process. This helps to prolong the contact time between the water and the heating element 110 and increase the heat exchange area, thereby reducing the thermal resistance and improving the heat transfer efficiency.

[0066] In some embodiments, the second steam channel further includes a third sub-steam channel 1293, which corresponds to a portion of the heating element 110. The third sub-steam channel 1293 and the first steam channel 128 are located on opposite sides of the heating element 120, and the third sub-steam channel 1293 connects the first sub-steam channel 1291 and the second sub-steam channel 1292.

[0067] In this way, the third sub-steam channel 1293 is located within the thermal effect range of the heating element 110 and can be directly affected by the heat released by the heating element 110, extending the steam flow path. By cooperating with the first steam channel 128, the first sub-steam channel 1291 and the second sub-steam channel 1292, all surfaces of the heating element 110 can be fully utilized, reducing thermal resistance, improving heat transfer efficiency, and ensuring the stability of steam output.

[0068] For example, Figures 3 to 6 A schematic diagram showing the sequential flow of steam from the first steam channel 128 and the second steam channel during the heating process is shown. Figure 3 The arrows in the diagram indicate the flow path of water within the first steam channel 128, and then... Figure 4 The arrows in the diagram show the flow path of steam from the first sub-steam channel 1291 to the third sub-steam channel 1293; Figure 5 The arrows in the diagram show the flow path of steam from the third sub-steam channel 1293 to the second sub-steam channel 1292; Figure 6 The arrows in the diagram show the flow path of steam from the second sub-steam channel 1292 to the steam outlet 127.

[0069] Reference Figures 2 to 8 As shown, in some examples, the heating element 120 includes two shells 121 that are joined together. The shells 121 have grooves 1211 that match the heating element 110 and are used to accommodate the heating element 110. The shells 121 have a plurality of first baffles 122 on the inner side of the area enclosed by the grooves 1211, and each first baffle 122 encloses a first sub-steam channel 1291. The shells 121 have a plurality of second baffles 123 on the outer side of the area enclosed by the grooves 1211, and each second baffle 123 encloses a second sub-steam channel 1292.

[0070] Thus, the heating element 120 adopts a split structure design, consisting of two interlocking shells 121, which facilitates the assembly of the internal flow channels and heating element 110, while improving the overall structure's sealing performance and manufacturability.

[0071] For example, the two housings 121 can be fixed and sealed by welding or fastener connection, and together they form an internal space to accommodate the heating element 110 and guide the steam flow. The inner surface of each housing 121 has a groove 1211 that matches the shape of the heating element 110. When the two housings 121 are aligned, their opposing grooves 1211 together form a mounting cavity for accommodating the heating element 110, ensuring that the heating element 110 is stably embedded within the heating element 120 and maintains good thermal contact with the wall surface of the housing 121. This facilitates efficient heat transfer to the flow channel area, while ensuring that it does not shift or loosen during operation, and avoiding increased thermal resistance or overheating damage due to poor local contact.

[0072] Furthermore, such as Figure 7 and Figure 8As shown, based on the structure of the shell 121, a plurality of first baffles 122 are provided on the inner side of the area enclosed by the heating element 110. These first baffles 122 protrude from the inner wall of the shell 121 and are arranged at intervals along a predetermined path. Their height and extension direction can be designed according to actual needs so that adjacent first baffles 122 form a defined space, together enclosing a first sub-steam flow channel 1291. Due to the presence of the first baffles 122, the flow path of steam in the first sub-steam flow channel 1291 is effectively constrained, which can reduce short-circuiting or flow deviation phenomena and reduce thermal resistance.

[0073] At the same time, such as Figure 7 and Figure 8 As shown, outside the area enclosed by the heating element 110, the housing 121 is also provided with a plurality of second baffles 123. These second baffles 123 also protrude from the inner surface of the housing 121, are arranged in a preset layout, and form a communicating channel with each other to jointly enclose a second sub-steam flow channel 1292. This flow channel is used to collect the steam flowing out from the first sub-steam flow channel 1291 and guide it to flow towards the steam port 127.

[0074] Reference Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, in a specific example, the first steam flow channel 128 and the third sub-steam flow channel 1293 are respectively arranged on opposite sides of the two shells 121.

[0075] In this way, by making reasonable use of the overall spatial volume of the heating element 120 to arrange the first steam channel 128 and the third sub-steam channel 1293, the heating element 110 can contact the channel walls of the first steam channel 128 and the third sub-steam channel 1293 on both sides of the stacking direction, thereby achieving efficient heat exchange in a compact structure.

[0076] Reference Figures 3 to 6 As shown, in some embodiments, one of the two housings 121 is provided with at least one first liquid distribution port 1212, which connects to the first steam flow channel 128 and the first sub-steam flow channel 1291; the other of the two housings 121 is provided with a second liquid distribution port 1213 and at least one third liquid distribution port 1214, which connects to the first sub-steam flow channel 1291 and the third sub-steam flow channel 1293, and the third liquid distribution port 1214 connects the third sub-steam flow channel 1293 and the second sub-steam flow channel 1292.

[0077] Thus, through the synergistic effect of the first liquid outlet 1212, the second liquid outlet 1213 and the third liquid outlet 1214, a smooth connection of the entire process from water inlet, preheating, centralized vaporization to steam output is achieved, which can avoid problems such as short-circuit flow, stagnation or local dry burning, and significantly improve the thermal response speed, heat transfer efficiency and operational reliability of the steam generating structure 100.

[0078] Specifically, after the two housings 121 are joined and sealed, each liquid outlet precisely aligns with its corresponding flow channel, forming a complete flow path. This design, which distributes the liquid outlets on different housings 121, facilitates the layer-by-layer flow channel connection during assembly. At the same time, it allows for the direct molding of each opening structure using molds during the manufacturing stage, improving processing accuracy and consistency.

[0079] The first liquid distribution port 1212 serves as a channel connecting the first steam flow channel 128 and the first sub-steam flow channel 1291, allowing the preheated water in the first steam flow channel 128 to flow into the first sub-steam flow channel 1291 through the first liquid distribution port 1212. Since the first sub-steam flow channel 1291 is located within the area enclosed by the heating element 110, where the heat flux density is high, the first liquid distribution port 1212 ensures that the preheated working fluid can promptly enter the high heat exchange area, quickly complete the vaporization process, and improve steam generation efficiency.

[0080] A second liquid distribution port 1213 and at least one third liquid distribution port 1214 are provided on another housing 121, which together enable steam to flow between the intermediate section and the output section. The second liquid distribution port 1213 connects the first sub-steam channel 1291 and the third sub-steam channel 1293, allowing steam or a steam-water mixture generated in the first sub-steam channel 1291 to enter the third sub-steam channel 1293 through this opening. Since the third sub-steam channel 1293 is located outside the area enclosed by the heating element 110 but still within the thermal effect range of the heating element 120, steam can continue to absorb heat while flowing in this area, achieving further heating or superheating, thereby improving steam dryness and output stability.

[0081] The third liquid distribution port 1214 is located at another position on the housing 121, connecting the third sub-steam channel 1293 and the second sub-steam channel 1292. This allows the overheated steam to smoothly flow into the second sub-steam channel 1292 and ultimately be discharged through the steam port 127. The arrangement of multiple third liquid distribution ports 1214 helps to disperse the resistance to steam flow, avoid excessively high local flow velocities or pressure concentrations, and ensure the uniformity and continuity of steam output.

[0082] It should be noted that the position and number of the liquid distribution ports can be adjusted according to the actual flow channel structure, and this application embodiment does not impose any restrictions on this.

[0083] Reference Figure 4 and Figure 6 As shown, in a specific example, the steam port 127 is located above the second liquid outlet 1213 and the third liquid outlet 1214, and the first liquid outlet 1212 is located above the steam port 127.

[0084] In this way, the spatial position of the heating element 120 can be utilized more fully, allowing the flow channels and liquid outlets inside the heating element 120 to be staggered in three-dimensional space. Since the density of steam is lower than that of liquid water, it will naturally accumulate at higher positions during the heating process. By placing the steam outlet 127 above the third liquid outlet 1214 and the second liquid outlet 1213, the steam in the second sub-steam flow channel 1292 can flow along the upward path, which helps to reduce flow resistance, prevent steam from accumulating or flowing back at lower positions, and ensure that the generated steam can be output quickly and efficiently.

[0085] It is understandable that the steam port 127 and the third liquid outlet 1214 are located outside the area enclosed by the heating element 110, while the first liquid outlet 1212 and the second liquid outlet 1213 are located within the area enclosed by the heating element 110.

[0086] Reference Figures 2 to 8 As shown, in some examples, both housings 121 have clearance grooves 1215, and cover plates 125 are provided on the clearance grooves 1215. Multiple third baffles 124 are arranged at intervals in the clearance grooves 1215. The third baffles 124 in one clearance groove 1215 form a first steam flow channel 128, and the third baffles 124 in the other clearance groove 1215 form a third sub-steam flow channel 1293. A water inlet 126 is provided on the cover plate 125 corresponding to the first steam flow channel 128, and the water inlet 126 is connected to the first steam flow channel 128.

[0087] Thus, by setting clearance grooves 1215 with third baffles 124 on the two shells 121 respectively, the independent construction of the first steam flow channel 128 and the third sub-steam flow channel 1293 is realized. The first steam flow channel 128 and the third sub-steam flow channel 1293 are located on the opposite outer side of the heating element 120 along the stacking direction, which is conducive to the full utilization of space and the rational distribution of the heat field.

[0088] For example, the cover plate 125 can be fixed to the housing 121 by welding, riveting, screwing, or sealing, forming a closed flow channel space together with the clearance groove 1215. An inlet 126 is provided on the cover plate 125 corresponding to the first steam flow channel 128; that is, the cover plate 125 itself can have a through hole, serving as an inlet for external water supply. This design allows the inlet 126 to directly connect to the first steam flow channel 128, enabling water to immediately enter the flow path defined by the third baffle 124, avoiding additional connectors or internal conduits, and reducing flow resistance and leakage risk. Simultaneously, integrating the inlet 126 onto the cover plate 125 facilitates alignment and positioning during assembly and also facilitates later maintenance or replacement.

[0089] Reference Figure 4 and Figure 6 As shown, in a specific example, the heating element 110 includes at least one bent portion 111 and at least two connecting portions 112. The connecting portions 112 and the bent portions 111 are arranged alternately in sequence along the extension direction of the heating element 120. The orientations of two adjacent bent portions 111 are opposite, and two adjacent bent portions 111 are connected by a connecting portion 112.

[0090] Thus, by alternating the bending portion 111 and the connecting portion 112, the heating element 110 can extend its heating length without increasing the overall volume, achieving a more uniform and efficient heating effect, while reducing the risk of local overheating and improving the thermal response speed and operational stability of the steam generating structure 100.

[0091] like Figure 4 As shown, the heating element 110 includes three bent portions 111 and four connecting portions 112. The connecting portions 112 have a straight tubular structure, and the bent portions 111 have a semi-circular tubular structure. The connecting portions 112 and the bent portions 111 are arranged alternately along the extension direction of the heating element 120, that is, along... Figure 4 The X-direction is connected alternately in sequence, so that the heating element 110 is M-shaped as a whole.

[0092] Among them, the two curved sections 111 located at the top have the same orientation, both facing towards Figure 4 Below the Y-direction, another curved portion 111 located below faces... Figure 4 Above the Y direction in the middle, four connecting parts 112 along Figure 4 The parts are arranged sequentially in the X direction, and the bending part 111 and the connecting part 112 can be integrally formed.

[0093] Furthermore, two first liquid distribution ports 1212 are provided, each corresponding to one of the opening sides of the two upper curved portions 111. A second liquid distribution port 1213 is provided on the convex side of the lower curved portion 111, so that the first liquid distribution ports 1212 and 1213 are located within the area enclosed by the heating element 110, thereby correspondingly communicating with the first sub-steam flow channel 1291. Two third liquid distribution ports 1214 are provided, each located on the outer side of the two connecting portions 112 located at the edge. A steam port 127 is provided on the concave side of the lower curved portion 111, so that the third liquid distribution ports 1214 and the steam port 127 are located outside the area enclosed by the heating element 110, thereby correspondingly communicating with the second sub-steam flow channel 1292.

[0094] For example, the first dispensing port 1212 may include Figure 4 Multiple circular holes arranged sequentially along the X direction, the third liquid distribution port 1214 may include Figure 6 Multiple circular holes arranged sequentially along the X direction.

[0095] Reference Figure 2 As shown, in some examples, the water inlet 126 and the steam outlet 127 are located on the same side of the heating element 120.

[0096] This allows external water supply lines and steam output lines to be connected and led out from the same direction, which helps simplify the internal pipeline layout of the equipment, reduce the crossing and bending of connecting pipelines, and improve assembly efficiency.

[0097] In other examples, the water inlet 126 and the steam outlet 127 are located on opposite sides of the heating element 120.

[0098] By separating the water inlet and steam outlet on both sides, the direct contact between the cold water inlet and the high-temperature steam near the steam outlet 127 can be effectively avoided, which helps to reduce thermal shock and local condensation, thereby outputting steam with higher dryness and more stable temperature.

[0099] This application also provides a cleaning device, including a device body and a steam generating structure 100 as described in any of the above embodiments, disposed on the device body.

[0100] The specific structure and working principle of the steam generating structure 100 are the same as those in the previous embodiments, and will not be described again in this embodiment.

[0101] The cleaning equipment provided in this application embodiment includes a steam generating structure 100. When the steam generating structure 100 is in operation, water in the first steam channel 128 is initially heated by the heating element 110 and enters the first sub-steam channel 1291. It then converts into steam and flows into the second sub-steam channel 1292, finally exiting from the steam outlet 127. During the heating process of the heating element 110, since the first steam channel 128 corresponds to a portion of the heating element 110, the first sub-steam channel 1291 is located within the area enclosed by the heating element 110, and the second sub-steam channel 1292 is located outside the area enclosed by the heating element 110, the water flow or water-steam mixture can fully contact each surface of the heating element 110 during its flow. This helps to prolong the contact time between the water and the heating element 110 and increase the heat exchange area, thereby reducing thermal resistance, improving heat transfer efficiency, and minimizing the impact on the response speed, energy efficiency, and service life of cleaning equipment such as garment steamers, floor scrubbers, and kitchen cleaning machines.

[0102] 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 steam generating structure, characterized in that, include: Heating element (110); A heating element (120) has a steam port (127). The heating element (120) is stacked with a first steam channel (128) and a second steam channel. The first steam channel (128) corresponds to a portion of the heating element (110). The second steam channel includes a first sub-steam channel (1291) and a second sub-steam channel (1292) that are interconnected. The heating element (110) is disposed inside the heating element (120). The first sub-steam channel (1291) is located within the area enclosed by the heating element (110). The second sub-steam channel (1292) is located outside the area enclosed by the heating element (110). The first steam channel (128) is connected to the first sub-steam channel (1291). The second sub-steam channel (1292) is connected to the steam port (127).

2. The steam generating structure according to claim 1, characterized in that, The second steam channel also includes a third sub-steam channel (1293), which corresponds to a portion of the heating element (110). The third sub-steam channel (1293) and the first steam channel (128) are located on opposite sides of the heating element (120), and the third sub-steam channel (1293) connects the first sub-steam channel (1291) and the second sub-steam channel (1292).

3. The steam generating structure according to claim 2, characterized in that, The heating element (120) includes two shells (121) that fit together, and the shells (121) have grooves (1211) that match the heating element (110) for accommodating the heating element (110). The housing (121) has a plurality of first baffles (122) on the inner side of the area enclosed by the groove (1211), each of the first baffles (122) forming a first sub-steam channel (1291). The housing (121) has a plurality of second baffles (123) on the outer side of the area enclosed by the groove (1211), each of the second baffles (123) forming a second sub-steam channel (1292).

4. The steam generating structure according to claim 3, characterized in that, The first steam channel (128) and the third sub-steam channel (1293) are respectively arranged on opposite sides of the two shells (121).

5. The steam generating structure according to claim 4, characterized in that, One of the two housings (121) is provided with at least one first liquid outlet (1212), which is connected to the first steam channel (128) and the first sub-steam channel (1291). The other of the two housings (121) is provided with a second liquid outlet (1213) and at least one third liquid outlet (1214). The second liquid outlet (1213) is connected to the first sub-steam channel (1291) and the third sub-steam channel (1293). The third liquid outlet (1214) is connected to the third sub-steam channel (1293) and the second sub-steam channel (1292).

6. The steam generating structure according to claim 5, characterized in that, The steam port (127) is located above the second liquid outlet (1213) and the third liquid outlet (1214), and the first liquid outlet (1212) is located above the steam port (127).

7. The steam generating structure according to any one of claims 3 to 6, characterized in that, Both of the housings (121) have clearance grooves (1215), and the clearance grooves (1215) are covered with cover plates (125). Multiple third baffles (124) are spaced apart in the clearance grooves (1215). Each of the third baffles (124) in one clearance groove (1215) forms the first steam flow channel (128), and each of the third baffles (124) in the other clearance groove (1215) forms the third sub-steam flow channel (1293). A water inlet (126) is provided on the cover plate (125) corresponding to the first steam channel (128), and the water inlet (126) is connected to the first steam channel (128).

8. The steam generating structure according to any one of claims 1 to 6, characterized in that, The heating element (110) includes at least one bent portion (111) and at least two connecting portions (112). The connecting portions (112) and the bent portions (111) are arranged alternately in sequence along the extension direction of the heating element (120). The two adjacent bent portions (111) are oriented in opposite directions, and the two adjacent bent portions (111) are connected by a connecting portion (112).

9. The steam generating structure according to claim 7, characterized in that, The water inlet (126) and the steam outlet (127) are located on the same side of the heating element (120); or, The water inlet (126) and the steam outlet (127) are located on opposite sides of the heating element (120).

10. A cleaning device, characterized in that, It includes the equipment body and the steam generating structure as described in any one of claims 1 to 9 disposed on the equipment body.

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