Steam washing device and extractor hood

Abstract

The application relates to the technical field of range hood cleaning, and discloses a steam cleaning device and a range hood, wherein the steam cleaning device comprises a steam generator and a fan; the steam generator is provided with a steam cavity and a heat insulation air duct surrounding the outer peripheral side of the steam cavity; the steam generator is used for heating cleaning medium in the steam cavity to generate steam; the heat insulation air duct is provided with a first ventilation opening and a second ventilation opening which are communicated with the external environment; the fan is arranged opposite to the first ventilation opening; the fan drives external airflow to flow into one of the first ventilation opening and the second ventilation opening and flow out from the other one of the first ventilation opening and the second ventilation opening. The technical scheme of the application can clean oil stains through steam and can also dissipate heat through the heat insulation air duct and the fan, so that scalding is avoided, the aging of components is slowed down, and the failure probability is reduced.

Description

Technical Field

[0001] This application relates to the field of range hood cleaning technology, and in particular to a steam cleaning device and a range hood. Background Technology

[0002] Range hoods are essential appliances in family kitchens. After long-term use, the smoke extraction mechanism is prone to grease buildup and requires regular cleaning. Most modern range hoods are equipped with a steam cleaning function, which uses steam to dissolve the grease in the smoke extraction mechanism, replacing laborious manual cleaning.

[0003] However, existing steam cleaning technologies, in pursuit of rapid degreasing, often set the steam generator temperature too high, directly causing the outer surface temperature of the steam generator to rise simultaneously. This poses a risk of burns and accelerates the aging and damage of other components of the range hood due to excessively high temperatures, significantly increasing the probability of equipment failure. This has become a core problem that current steam cleaning technology urgently needs to solve. Summary of the Invention

[0004] This application provides a steam cleaning device and a range hood that can clean oil stains with steam and dissipate heat with the help of heat-insulated air ducts and fans, thereby avoiding burns, slowing down component aging, and reducing the probability of failure.

[0005] In a first aspect, embodiments of this application provide a steam cleaning apparatus, which includes:

[0006] A steam generator includes a steam chamber and an insulated air duct surrounding the outer periphery of the steam chamber. The steam generator heats the cleaning medium within the steam chamber to generate steam. The insulated air duct has a first vent and a second vent communicating with the external environment.

[0007] A fan is disposed opposite to the first vent. The fan drives external airflow to flow in through one of the first vent and the second vent, and to flow out through the other of the first vent and the second vent.

[0008] In some embodiments, the steam washing apparatus further includes:

[0009] A water-generating module is connected to the steam generator. The water-generating module has an airflow channel positioned opposite to the first vent of the steam generator. The water-generating module is used to condense water vapor in the air as it flows through the airflow channel, forming condensate that is then input into the steam chamber to replenish the cleaning medium.

[0010] A fixed cover is connected to the side of the water production module away from the steam generator. The fixed cover has an opening for airflow. The fan is installed inside the fixed cover and is located on the extension path of the airflow channel.

[0011] In some embodiments, the water production module includes:

[0012] A fixed base is connected to the steam generator and the fixed cover respectively, and the fan is located between the fixed cover and the fixed base;

[0013] Cooling element, connected to the mounting base, for providing cooling capacity; and

[0014] The condenser fins are connected to the cooling plate. The condenser fins are used to receive the cooling energy of the cooling plate to condense water vapor in the air to form condensate, and guide the condensate into the steam chamber to replenish the cleaning medium.

[0015] The fixed base has a first air duct hole that penetrates through itself, and the condenser fins have a second air duct hole that penetrates through themselves. The first air duct hole and the second air duct hole are arranged opposite to each other and are interconnected to form the airflow channel.

[0016] In some embodiments, the cooling element has a heating surface and a cooling surface arranged opposite to each other, the cooling surface facing the steam generator and the heating surface facing away from the steam generator, the condenser fins being connected to the surface of the mounting base near the steam generator and abutting against the cooling surface; the water production module further includes:

[0017] The heat dissipation fins are connected to the surface of the fixed base away from the steam generator and abut against the heating surface. The heat dissipation fins are provided with a third air duct hole that penetrates through themselves.

[0018] The third air duct hole is disposed opposite to and connected to the first air duct hole, and together with the first air duct hole and the second air duct hole, they form the airflow channel.

[0019] In some embodiments, the mounting base has a through hole, the cooling element is embedded in the through hole, and the cooling surface and heating surface of the cooling element are exposed on opposite sides of the mounting base.

[0020] In some embodiments, the fixing through hole is located in the radial center region of the fixing seat;

[0021] And / or, the first air duct hole is provided in multiple ways, and the multiple first air duct holes are evenly distributed around the periphery of the fixed through hole. The second air duct hole and the third air duct hole are provided in multiple ways and are respectively connected to the first air duct hole one by one.

[0022] In some embodiments, the mounting base has a positioning groove that is opposite to the steam generator, and the positioning groove is located on one side of the mounting through hole;

[0023] The water production module also includes an electronic control board, which is embedded in the positioning groove and electrically connected to the cooling element.

[0024] In some embodiments, the condenser fins include:

[0025] A connecting plate, which is connected to the fixed base and abuts against the cooling surface, is provided with a second air duct hole; and

[0026] Multiple fin groups are arranged along the connecting plate away from the surface of the cooling plate and circumferentially along the connecting plate. Each fin group includes multiple sub-fins spaced apart, and the distance between adjacent sub-fins is D, where 3mm≤D≤5mm.

[0027] In some embodiments, there is a gap between the mounting base and the end face of the steam generator, the gap connecting the outside world and the peripheral area of ​​the condenser fins.

[0028] In some embodiments, the steam generator includes:

[0029] An evaporation container is provided with the heat-insulating air duct. A first vent and a second vent are respectively located at opposite axial ends of the evaporation container, with the first vent situated at the end of the evaporation container closest to the water-making module.

[0030] A heating element is sealed to the bottom of the evaporation container to enclose and form the steam chamber. The heating element is used to heat the cleaning medium in the steam chamber, so that the cleaning medium evaporates to form the steam.

[0031] In some embodiments, the bottom of the evaporation container has an installation port, and the steam generator further includes:

[0032] A sealing ring, wherein the sealing ring is sleeved around the periphery of the heating component and embedded in the mounting opening; and

[0033] A pressure cap is attached to the bottom of the evaporation container and covers the mounting port.

[0034] In some embodiments, the bottom of the evaporator is recessed at the end face of the mounting port to form an annular groove, and the bottom surface of the annular groove protrudes to the side facing away from the steam chamber to form a sealing surface, which abuts against the surface of the sealing ring away from the pressure cap.

[0035] In some embodiments, the gland includes:

[0036] A lid body, the lid body being connected to the bottom of the evaporation container; and

[0037] A boss is attached to the side of the cover body near the evaporation container, and the boss abuts against the end of the sealing ring away from the steam chamber.

[0038] In some embodiments, the cover body has a heat dissipation hole that connects the side of the cover body facing the heating member to the outside.

[0039] In some embodiments, a pressure-injection water box is also included, and a water inlet is provided on the side wall of the evaporation container. The water inlet is connected to the steam chamber, and the pressure-injection water box is connected to the water inlet to supplement the steam chamber with cleaning medium when the water production module is insufficient.

[0040] Secondly, embodiments of this application provide a range hood, comprising:

[0041] Smoke machine frame;

[0042] The smoking device is connected to the smoking machine frame; and

[0043] The steam cleaning device described above is connected to the smoke machine frame for cleaning the smoke machine.

[0044] Based on the above embodiments, by setting a heat-insulating air duct on the outer periphery of the steam chamber of the steam generator, and cooperating with a fan opposite to the first vent of the heat-insulating air duct, the fan can drive the external airflow to flow in the heat-insulating air duct. The flowing airflow can promptly remove the heat from the outer periphery of the steam chamber, preventing the outer surface temperature of the steam generator from rising synchronously with the steam temperature. This reduces the risk of burns when users come into contact with the equipment, and also reduces the conduction of excessive heat to the internal components of the range hood, thereby slowing down the aging and damage of the internal components and reducing the probability of equipment failure. Attached Figure Description

[0045] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the structure of an embodiment of the range hood of this application;

[0047] Figure 2 This is a schematic diagram of the structure of an embodiment of the steam washing apparatus of this application;

[0048] Figure 3This is a cross-sectional structural schematic diagram of the steam washing apparatus of this application;

[0049] Figure 4 This is another cross-sectional view of the steam washing apparatus of this application;

[0050] Figure 5 This is a schematic diagram of the airflow guidance of the steam washing device of this application;

[0051] Figure 6 This is a schematic diagram of the exploded structure of the steam washing apparatus of this application;

[0052] Figure 7 This is a schematic diagram of the exploded structure of the steam generator in the steam cleaning apparatus of this application;

[0053] Figure 8 This is a schematic diagram of the water production module of the steam washing device of this application;

[0054] Figure 9 This is a schematic diagram of the condenser fins of the steam generator in the steam washing apparatus of this application;

[0055] Figure 10 This is a schematic diagram of the evaporation vessel of the steam washing apparatus of this application;

[0056] Figure 11 for Figure 4 A magnified view of a section at point A in the middle;

[0057] Figure 12 This is an exploded structural diagram of the pressure-injection water box of the steam washing device of this application;

[0058] Figure 13 This is a cross-sectional structural diagram of the pressure-injection water box of the steam washing device of this application.

[0059] Explanation of icon numbers:

[0060] 1000. Range hood; 100. Steam cleaning device; 10. Steam generator; 10A. Steam chamber; 11. Evaporation container; 111. Water inlet; 112. Insulated air duct; 1121. First vent; 1122. Second vent; 113. Steam outlet; 114. Annular groove; 1141. Sealing surface; 115. Water inlet; 116. Installation port; 12. Heating component; 13. Sealing ring; 14. Pressure cap; 141. Cap body; 1411. Heat dissipation hole; 142. Boss; 20. Water production module; 21. Fixing base; 211. First air duct hole; 21 2. Fixed through hole; 213. Positioning groove; 22. Cooling plate; 221. Cooling surface; 222. Heating surface; 23. Condensing fins; 231. Connecting plate; 232. Fin assembly; 2321. Sub-fin; 233. Second air duct hole; 24. Heat dissipation fins; 241. Third air duct hole; 25. Electrical control board; 30. First one-way valve; 40. Pressure injection water box; 40A. Water replenishment cavity; 40B. Water replenishment interface; 41. Box body; 42. Pressing piston; 421. Piston rod; 422. Sealing component; 50. Second one-way valve; 60. Fan; 70. Fixing cover; 200. Smoke hood frame.

[0061] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0063] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0064] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0066] Please see Figure 1 The first aspect of this application discloses a range hood 1000, which is installed above the cooking area to absorb and exhaust cooking fumes generated during cooking, thereby maintaining a clean and comfortable kitchen environment. Optionally, the range hood 1000 includes a hood frame 200, a fume extraction device, and a steam cleaning device 100.

[0067] The range hood frame 200 provides mounting support for all components. The frame 200 forms a smoke-collecting chamber. The smoke extraction device includes a volute and an impeller rotatably mounted within it. The volute forms a channel for absorbing and expelling cooking fumes, and the rotating impeller generates negative pressure to draw in and expel kitchen fumes. When the range hood 1000 starts operating, the smoke extraction device creates negative pressure in the smoke-collecting chamber, capturing and concentrating the fumes generated during cooking. These fumes are then accelerated through the smoke extraction device into the flue and discharged outdoors. A steam cleaning device 100 is connected to the frame 200 and is used to clean components prone to grease buildup, such as the volute and impeller, when the smoke extraction device is not operating.

[0068] In pursuit of rapid degreasing, current steam cleaning technologies often set the steam generator temperature too high, directly causing the outer surface temperature of the steam generator to rise simultaneously. This not only poses a significant risk of burns to users when touching the high-temperature areas of the equipment, but also accelerates the aging and damage of internal components of the range hood due to excessively high temperatures, thus greatly increasing the probability of equipment failure. This has become a core problem that current steam cleaning technology urgently needs to solve.

[0069] To resolve the above issues, please refer to [link / reference]. Figures 2 to 4 The second aspect of this application provides a steam cleaning apparatus 100, which, in the embodiments of this application, includes a steam generator 10 and a blower 60.

[0070] The steam generator 10 is provided with a steam chamber 10A and a heat-insulated air duct 112 surrounding the outer periphery of the steam chamber 10A. The steam generator 10 is used to heat the cleaning medium in the steam chamber 10A to generate steam for cleaning the range hood 1000. The cleaning medium can be clean water or cleaning liquid. The heat-insulated air duct 112 has a first vent 1121 and a second vent 1122 communicating with the external environment.

[0071] The blower 60 can be an axial flow blower 60 or a centrifugal blower 60, etc., and can be directly connected to the steam generator 10 or fixed to other positions on the flue gas fan frame 200, as shown in the reference. Figure 5 It is positioned opposite to the first vent 1121 and can drive external airflow to flow in through one of the first vent 1121 and the second vent 1122 and out through the other by positive pressure blowing or negative pressure suction.

[0072] Based on the above embodiments, by providing a heat-insulating air duct 112 on the outer periphery of the steam chamber 10A of the steam generator 10, and cooperating with a fan 60 opposite to the first vent 1121 of the heat-insulating air duct 112, the fan 60 can drive external airflow to flow in the heat-insulating air duct 112. The flowing airflow can promptly remove the heat from the outer periphery of the steam chamber 10A, preventing the outer surface temperature of the steam generator 10 from rising synchronously with the steam temperature. This reduces the risk of burns when users come into contact with the equipment and also reduces the conduction of excessive heat to the internal components of the range hood 1000, thereby slowing down the aging and damage of the internal components and reducing the probability of equipment failure.

[0073] Reference Figures 3 to 5 In some embodiments, the steam cleaning device 100 further includes a water-generating module 20 and a fixing cover 70. The water-generating module 20 is connected to the steam generator 10 and has an airflow channel. The airflow channel is positioned opposite to the first vent 1121 of the steam generator 10. The water-generating module 20 is used to condense water vapor in the air as it flows through the airflow channel, forming condensate that is then input into the steam chamber 10A to replenish the cleaning medium. During the water production process, driven by a single fan 60, the humid air is accelerated through the airflow channel and comes into full contact with the condensation structure of the water-generating module 20, significantly improving the condensation effect and ensuring water production efficiency. Furthermore, it eliminates the need for frequent manual water addition by the user, significantly improving ease of use.

[0074] A mounting cover 70 is connected to the side of the water-making module 20 facing away from the steam generator 10. The mounting cover 70 has an opening for airflow. A fan 60 is installed inside the mounting cover 70, and the fan 60 is located on the extension path of the airflow channel. The fan 60, installed through the mounting cover 70 and aligned with the airflow channel, guides the airflow more smoothly through the heat-insulating air duct 112 between the water-making module 20 and the steam generator 10. This provides sufficient airflow for the condensation process of the water-making module 20, ensuring water production efficiency, and further enhances the heat dissipation effect of the heat-insulating air duct 112, making the outer surface temperature of the steam generator 10 easier to control, thereby continuously reducing the risk of burns and the probability of equipment failure. Simultaneously, the mounting cover 70 protects the fan 60, improving the stability and service life of the overall structure. In this way, a single fan 60 achieves multi-functional synergy of water production, heat dissipation, and heat insulation without the need for additional power components, simplifying the overall structure and reducing energy consumption.

[0075] Reference Figure 6 and Figure 7 Furthermore, the water production module 20 includes a mounting base 21, a cooling element 22, and condenser fins 23. The mounting base 21 serves as a connection and support, and can be fixed to the steam generator 10 and the mounting cover 70 respectively by detachable connection methods such as screws. The fan 60 is installed in the space between the mounting cover 70 and the mounting base 21. The cooling element 22 is connected to the mounting base 21 and works based on the semiconductor thermoelectric principle. When energized, it creates a temperature difference effect with one end cooling and the other end dissipating heat. Its core function is to provide the required cooling capacity for the condensation process.

[0076] The condenser fins 23 are connected to the cooling plate 22. The condenser fins 23 receive the cooling energy from the cooling plate 22 to condense water vapor in the air, forming condensate, and guide the condensate into the steam chamber 10A to replenish the cleaning medium. By increasing the contact area with the airflow, the condenser fins 23 can quickly conduct the cooling energy of the cooling plate 22, significantly improving the condensation rate of water vapor in the air, ensuring a continuous replenishment of the cleaning medium, eliminating the need for frequent manual water addition by the user, significantly reducing the operational burden, and optimizing the user experience. It should be noted that the steam generator 10 is equipped with a water inlet 111 that connects to the steam chamber 10A. The condenser fins 23 extend at least partially to the water inlet 111, so that the condensate can be directly guided to the water inlet 111 to enter the steam chamber 10A to replenish the cleaning medium. Water replenishment can be completed without the need for a water pump and water tank. At the same time, users do not need to repeat the tedious process of disassembly, water addition, and installation frequently, which reduces the user's workload. It can continuously replenish the cleaning medium to the steam chamber 10A, which is compatible with the compact internal structure of the range hood 1000, avoids the need for additional installation space, reduces the complexity of structural design, reduces the difficulty of circuit control and production costs caused by the addition of water pumps and water tanks, and eliminates the mechanical noise generated by the operation of water pumps, ensuring the user experience.

[0077] The inlet 111 penetrates the top wall of the steam chamber 10A, and the condenser fins 23 are located above the top wall of the steam chamber 10A. This allows the condensate generated by the condenser fins 23 to flow naturally to the inlet 111 by gravity, eliminating the need for an additional flow guiding structure, simplifying the water flow guidance path, and reducing the risk of condensate residue or blockage.

[0078] Furthermore, the inlet 111 is located in the central region of the top wall of the steam chamber 10A, and the top wall of the steam chamber 10A gradually slopes down from its edge towards the center. This inclined structure of the top wall creates a natural flow-guiding slope, allowing condensate falling at any point on the top wall to flow smoothly towards the central inlet 111, achieving rapid collection and introduction of condensate and significantly reducing water residue. Simultaneously, the central inlet 111, in conjunction with the inclined slope, further enhances the smoothness of gravity-fed water replenishment, eliminating the need for additional flow-guiding components and simplifying the structural design.

[0079] Reference Figure 3 In some embodiments, the steam cleaning device 100 further includes a first one-way valve 30, which is connected to the top wall of the chamber and communicates with the inlet 111. The first one-way valve 30 allows condensate to flow smoothly into the steam chamber 10A through the inlet 111 and prevents steam in the steam chamber 10A from overflowing back through the inlet 111. Through the one-way conduction characteristic of the one-way valve, the flow of condensate into the steam chamber 10A by gravity and the guiding structure is not hindered, ensuring the continuity and smoothness of water replenishment. At the same time, it effectively prevents steam from overflowing back, avoiding steam contact with components such as the cooling plates 22 and condenser fins 23 of the water-generating module 20, thus preventing a reduction in condensation efficiency. It also prevents steam leakage from causing aging of surrounding components or creating safety hazards. Furthermore, the first one-way valve 30 is directly adapted to the top wall of the chamber and the inlet 111, resulting in a compact structure that does not require significant adjustments to the existing layout. It aligns with the overall water replenishment and guiding logic, further improving the operational stability and safety of the steam cleaning device 100.

[0080] Furthermore, the mounting base 21 has a first air duct hole 211 penetrating through it, and the condenser fins 23 have a second air duct hole 233 penetrating through them. The first air duct hole 211 and the second air duct hole 233 are arranged opposite to each other and are interconnected to form an airflow channel. The regular and interconnected air duct holes provide a smooth and precise flow path for airflow, which can work with the fan 60 to drive the airflow to flow efficiently through the condensation area, further enhancing the condensation and water production effect.

[0081] Combined with reference Figure 7 as well as Figure 8 Furthermore, the cooling element 22 has a heating surface 222 and a cooling surface 221 arranged opposite to each other. The cooling surface 221 faces the steam generator 10, while the heating surface 222 faces away from the steam generator 10. The condensing fins 23 are connected to the surface of the mounting base 21 near the steam generator 10 and abut against the cooling surface 221. The cooling surface 221 facing the steam generator 10 and abutting tightly against the condensing fins 23 can shorten the cold energy transfer path, reduce cold energy loss, and allow the condensing fins 23 to quickly obtain sufficient cold energy. At the same time, the arrangement of the condensing fins 23 close to the steam generator 10 allows the generated condensate to be more conveniently input into the steam chamber 10A, improving water replenishment efficiency and avoiding water waste.

[0082] The water production module 20 also includes heat dissipation fins 24. The heat dissipation fins 24 are connected to the surface of the fixed base 21 away from the steam generator 10 and abut against the heating surface 222. The heat dissipation fins 24 have a third air duct hole 241 that penetrates through them. The heat dissipation fins 24 abut against the heating surface 222, which can quickly dissipate the heat generated by the heating surface 222 when the cooling element 22 is working, avoid the cooling efficiency of the cooling element 22 from decreasing due to heat accumulation, ensure the long-term stable operation of the cooling element 22, and extend its service life. At the same time, the structural design of the heat dissipation fins 24 increases the heat dissipation area, further improves the heat dissipation effect, and ensures the continuous stability of the temperature difference effect of the cooling element 22.

[0083] Combined with reference Figures 3 to 5 The third air duct hole 241 is positioned opposite to and connected to the first air duct hole 211, and together with the first air duct hole 211 and the second air duct hole 233, forms an airflow channel. The connection of the three forms a complete and regular airflow channel, allowing airflow to smoothly pass through the heat dissipation fins 24, the fixing seat 21, and the condenser fins 23. This ensures sufficient contact between the airflow and the condenser fins 23 during water production, and also removes heat from the heat dissipation fins 24 through the airflow, achieving coordinated airflow for water production and heat dissipation. At the same time, this complete airflow channel precisely corresponds to the heat insulation air duct 112 of the steam generator 10, laying the structural foundation for achieving multi-functional coordination of water production, heat dissipation, and heat insulation under the drive of a single fan 60.

[0084] Reference Figure 8 Furthermore, the mounting base 21 has a through-hole 212, in which the cooling element 22 is embedded. The cooling surface 221 and heating surface 222 of the cooling element 22 are exposed on opposite sides of the mounting base 21. The through-hole 212 provides precise installation positioning for the cooling element 22, and the embedded installation method allows the cooling element 22 to fit tightly against the mounting base 21, preventing displacement or loosening due to vibration during operation and ensuring installation stability. At the same time, the cooling surface 221 and heating surface 222 of the cooling element 22 are exposed on opposite sides of the mounting base 21, eliminating the need for additional clearance structures. They can directly and precisely connect with the condenser fins 23 and heat dissipation fins 24, shortening the energy transfer path, reducing cold loss and heat accumulation, and improving cooling and heat dissipation efficiency. In addition, the embedded installation allows the cooling element 22 and the mounting base 21 to form an integrated structure, which optimizes the space utilization of the mounting base 21, making the overall layout more compact, simplifies the assembly process, improves production and assembly efficiency, and further enhances the overall integrity and reliability of the device structure.

[0085] Furthermore, the fixing through hole 212 is located in the radial center region of the mounting base 21. This radial center region allows for a more centered installation position of the cooling element 22, resulting in a more balanced stress distribution on the mounting base 21. This prevents localized stress concentration caused by the offset of the cooling element 22, improving the structural stability and service life of the mounting base 21. Simultaneously, the centrally positioned cooling element 22 ensures a balanced distance from the cooling surface 221, heating surface 222 to the condensing fins 23 and heat dissipation fins 24, resulting in a more symmetrical path for heat transfer, reducing energy loss, and making the cooling and heat dissipation effects more uniform and efficient. Moreover, the radial center location of the fixing through hole 212 prevents positional interference with the first air duct hole 211 on the mounting base 21, allowing sufficient space for the air duct hole installation, ensuring the regularity and smoothness of the airflow channel. It also makes the layout of the cooling element 22 more coordinated with surrounding components, further optimizing the overall compactness and assembly precision of the device.

[0086] Optionally, multiple first air duct holes 211 are provided, and these multiple first air duct holes 211 are evenly distributed around the periphery of the fixed through hole 212. The multiple first air duct holes 211 evenly distributed around the fixed through hole 212 allow airflow to form a ring-shaped flow path around the cooling plate 22, ensuring more comprehensive and uniform contact between the airflow and the condenser fins 23 and heat dissipation fins 24, avoiding localized airflow concentration or dead zones, and significantly improving the overall efficiency of condensation and heat dissipation. Simultaneously, the evenly distributed holes can disperse the stress on the mounting base 21, preventing excessive local openings from reducing structural strength, ensuring the structural stability of the mounting base 21, and allowing for more rational space utilization and better coordination with the layout of surrounding components. Multiple second air duct holes 233 and third air duct holes 241 are provided correspondingly and are respectively connected to the first air duct holes 211 one-to-one. Multiple sets of one-to-one corresponding air duct holes can form multiple parallel airflow channels, which not only increases the total ventilation volume, but also ensures smooth and unobstructed airflow in each channel, allowing the airflow driven by the fan 60 to accurately and efficiently penetrate the water production module 20. At the same time, the one-to-one connection method avoids the disorder of airflow splitting, making the airflow in each channel more balanced, further improving the uniformity of condensation water production and the comprehensiveness of heat dissipation. It can also echo the surrounding first air duct holes 211, strengthen the synergy between airflow and the surrounding components of the cooling plate 22, make the water production and heat dissipation functions more closely connected, and improve the overall operational stability and efficiency of the device.

[0087] Optionally, the mounting base 21 has a positioning groove 213 facing away from the steam generator 10, located on one side of the fixing through hole 212. The water production module 20 also includes an electrical control board 25, which is embedded in the positioning groove 213 and electrically connected to the cooling element 22. The positioning groove 213 provides dedicated installation space and precise positioning for the electrical control board 25. The embedded method can prevent the electrical control board 25 from shifting or loosening during operation, ensuring installation stability. The positioning groove 213 is facing away from the steam generator 10 and located on one side of the fixing through hole 212. The electrical connection between the electrical control board 25 and the cooling element 22 at close range can shorten the wire length, reduce power loss and signal interference, and improve control accuracy. The controllable design of the electrical control board 25 for cooling efficiency can flexibly adjust the output cooling capacity of the cooling element 22 according to the actual situation such as the remaining cleaning medium in the steam chamber 10A and the ambient humidity, avoiding over-cooling causing energy waste or under-cooling causing untimely water replenishment, making the water production process more intelligent and efficient, and accurately adapting to the needs of different usage scenarios. In addition, this layout does not occupy the installation space of airflow channels and other components, making the functional division of the mounting base 21 clearer, the overall structure more compact and regular, simplifying the assembly process, and also providing convenience for later maintenance of the electronic control board 25.

[0088] Reference Figure 7 and Figure 9 In some embodiments, the condenser fins 23 include a connecting plate 231 and multiple fin groups 232. The connecting plate 231 is connected to the mounting base 21 and abuts against the cooling surface 221. The connecting plate 231 has a second air duct hole 233. As an intermediate connecting carrier, the connecting plate 231 enables a stable connection between the condenser fins 23 and the mounting base 21 and the cooling surface 221, increasing the contact area to reduce cold loss and allowing cold energy to be quickly transferred to the entire condenser fins 23. At the same time, the second air duct hole 233 on the connecting plate 231 precisely corresponds to the first air duct hole 211 of the mounting base 21, ensuring the continuity of the airflow channel, avoiding airflow obstruction at the connection point, and ensuring flow efficiency.

[0089] Multiple fin groups 232 are arranged along the connecting plate 231 away from the surface of the cooling plate 22 and are arranged circumferentially along the connecting plate 231. The circumferentially distributed fin groups 232 can cover the airflow path in all directions, making the contact between the airflow and the fin groups 232 more uniform and sufficient, avoiding local condensation dead corners, and greatly improving the overall condensation efficiency. At the same time, the circumferential layout adapts to the surrounding distribution structure of the air duct holes, so that the airflow always maintains effective contact with the fins during the flow process, enhancing the water vapor condensation effect.

[0090] Each fin group 232 includes multiple sub-fins 2321 spaced apart, with a spacing of D between adjacent sub-fins 2321, where 3mm ≤ D ≤ 5mm. This avoids both excessively small spacing, which would increase airflow resistance and obstruct ventilation, and excessively large spacing, which would waste space and reduce condensation efficiency per unit area. Simultaneously, this spacing ensures sufficient flow space between the sub-fins 2321 while maximizing the condensation contact area, achieving a balance between flowability and condensation efficiency. It also reduces the residual accumulation of condensate on the surface of the sub-fins 2321, allowing condensate to flow more smoothly into the steam chamber 10A and improving water replenishment stability. Furthermore, the end face of each sub-fin 2321 facing away from the connecting plate 231 gradually decreases in elevation from the edge of the top wall of the chamber towards the center. In this way, the inclined end face of the sub-fin 2321 is consistent with the inclined direction of the cavity top wall, forming a continuous flow path, so that the condensate on the surface of the sub-fin 2321 can flow quickly along the inclined end face to the water inlet 111 in the central area, reducing the water residue on the fin surface.

[0091] Optionally, the surface of the sub-fin 2321 has a hydrophilic coating. The specific operation involves: first, degreasing and drying the fin surface; then, uniformly covering the surface with the hydrophilic coating using spraying, dip coating, or roller coating processes; and finally, curing at room temperature or low temperature. This treatment reduces the contact angle between condensate and the surface, allowing water vapor to quickly spread into a water film after condensation, preventing water droplet retention, accelerating water flow towards the central inlet 111, and reducing residual loss.

[0092] Optionally, the surface of the sub-fin 2321 has a hydrophobic coating. The specific operation involves: first, roughening or activating the fin surface; then, applying a low surface energy hydrophobic material using processes such as vacuum coating or electrostatic spraying; and finally, curing to form a dense coating. This design increases the contact angle between condensate and the surface of the sub-fin 2321, allowing condensate to quickly gather into droplets and smoothly roll off along the inclined direction of the sub-fin 2321, reducing water flow adhesion resistance. It also reduces scale buildup on the fin surface, facilitating long-term maintenance of condensation efficiency and smooth water flow.

[0093] Optionally, the surface of the sub-fin 2321 is sandblasted. The specific procedure is as follows: after fixing the sub-fin 2321, the surface is impacted with high-speed abrasive jets to form a uniformly rough structure. After treatment, residual debris is removed by blowing or washing. This treatment increases the contact area with air, improving the condensation rate of water vapor; furthermore, the rough surface generates a capillary effect, guiding condensate to quickly converge and flow, preventing localized water accumulation on the fin surface, and further optimizing the smoothness of water replenishment.

[0094] Optionally, the surface of the sub-fin 2321 is etched. The specific procedure is as follows: first, the surface of the sub-fin 2321 is degreased and acid-washed for pretreatment; then, areas requiring no treatment are masked; next, fine textures are formed using an etching solution or plasma etching; finally, the mask is removed and the surface is cleaned and dried. This treatment creates micro-flow guiding textures, which not only expands the condensation contact area and enhances the water vapor condensation effect, but also uses the fine textures as micro-flow guiding channels to guide the condensate smoothly towards the central inlet 111 along the inclined direction, improving the stability of water replenishment. Furthermore, no additional flow guiding components are required, making it compatible with the overall structural design.

[0095] Reference Figure 4 and Figure 10 In some embodiments, the steam cleaning device 100 further includes a first one-way valve 30, which is connected to the top wall of the chamber and communicates with the inlet 111. The first one-way valve 30 allows condensate to flow smoothly into the steam chamber 10A through the inlet 111 and prevents steam in the steam chamber 10A from overflowing back through the inlet 111. Thus, through the one-way conduction characteristic of the one-way valve, the flow of condensate into the steam chamber 10A by gravity and the guiding structure is not hindered, ensuring the continuity and smoothness of water replenishment; at the same time, it effectively prevents steam from overflowing back, avoiding steam contact with components such as the cooling plates 22 and condenser fins 23 of the water production module 20, thus preventing a reduction in condensation efficiency. It also prevents steam leakage from causing aging of surrounding components or creating safety hazards. Furthermore, the first one-way valve 30 is directly adapted to the top wall of the chamber and the inlet 111, resulting in a compact structure that does not require significant adjustments to the existing layout. It aligns with the overall water replenishment and guiding logic, further improving the operational stability and safety of the steam cleaning device 100.

[0096] Optionally, a gap exists between the mounting base 21 and the end face of the steam generator 10, connecting the outside environment and the surrounding area of ​​the condenser fins 23. Firstly, the gap establishes an airflow supply channel between the outside environment and the periphery of the condenser fins 23, continuously introducing humid air from the outside to provide a sufficient and fresh air source for condensation and water production, preventing a decrease in water production efficiency due to insufficient airflow and ensuring continuous water replenishment. Secondly, the gap avoids hard contact between the mounting base 21 and the end face of the steam generator 10, reducing structural interference during assembly, lowering the requirements for assembly precision, and improving assembly convenience. It also buffers minor vibrations during equipment operation, protecting the contact surfaces from wear and extending component lifespan. Finally, the gap forms an auxiliary ventilation space, making it easier for airflow around the condenser fins 23 to circulate, preventing localized airflow stagnation from affecting the condensation effect. It also provides a slight negative pressure assist for the convergence of condensate, allowing condensate to flow more smoothly into the steam chamber 10A, further ensuring water replenishment stability.

[0097] Reference Figure 4 , Figure 6 as well as Figure 10In some embodiments, the steam generator 10 includes an evaporation container 11 and a heating element 12. The evaporation container 11 is provided with a heat-insulating air duct 112. A first vent 1121 and a second vent 1122 are respectively opened at both ends of the evaporation container 11, with the first vent 1121 located at the end of the evaporation container 11 closer to the water production module 20. The first vent 1121 and the second vent 1122 at both ends of the axial direction cooperate with the heat-insulating air duct 112 to form a through airflow channel, allowing airflow to enter from the side of the water production module 20 through the second vent 1122 and then flow out from the first vent 1121, realizing rapid air circulation within the heat-insulating air duct 112. The layout of the first vent 1121 close to the water production module 20 allows for precise connection with the complete airflow channel of the water production module 20, allowing the airflow driven by a single fan 60 to flow directly into the heat-insulating air duct 112, enhancing the synergistic effect of heat dissipation and insulation, and further reducing the temperature rise of the outer surface of the evaporation container 11. The heat insulation duct 112 itself can block the high temperature of the steam chamber 10A from being conducted outward, providing a dedicated path for the heat dissipation airflow and preventing heat from spreading to surrounding components.

[0098] The heating element 12 is sealed to the bottom of the evaporation container 11, forming a steam chamber 10A. The heating element 12 heats the cleaning medium within the steam chamber 10A, causing it to evaporate and form steam. The bottom mounting of the heating element 12 allows heat to directly act on the cleaning medium at the bottom of the steam chamber 10A, reducing heat transfer paths, minimizing heat loss, and improving heating efficiency. The enclosed structure creates a relatively sealed space within the steam chamber 10A, ensuring concentrated heat during cleaning medium evaporation and preventing steam leakage, thus ensuring stable steam pressure to meet the cleaning requirements of the steam cleaning device 100. Simultaneously, the bottom mounting method allows for more even stress distribution on the heating element 12, resulting in less vibration during operation and improving structural stability and service life. A steam outlet 113 is provided on the side wall of the evaporation container 11, connecting to the steam chamber 10A for steam discharge. The steam outlet 113 on the side wall allows the generated steam to be discharged along a reasonable path, precisely delivering it to the impeller, volute, and other cleaning areas of the range hood 1000, while reducing steam retention within the chamber and preventing excessive local pressure. The evaporation container 11 integrates water inlet, containment, and steam outlet functions, with a high degree of structural integration. It is highly compatible with components such as the water supply path of the water production module 20 and the first one-way valve 30, further enhancing the operational stability and structural rationality of the steam generator 10.

[0099] Furthermore, the steam generator 10 also includes a sealing ring 13 and a pressure cap 14. An installation port 116 is provided at the bottom of the evaporation container 11. The heating element 12 extends into the evaporation container 11 through the installation port 116. The sealing ring 13 is fitted around the periphery of the heating element 12 and embedded in the side wall of the installation port 116. The installation port 116 provides a precise installation channel for the heating element 12, allowing it to stably extend into the evaporation container 11 and correspond to the steam chamber 10A, ensuring that the heating effect directly acts on the cleaning medium and improving the heating targeting. The double-embedded structure of the sealing ring 13 (fitted around the periphery of the heating element 12 + embedded in the side wall of the installation port 116) forms a double sealing barrier, firmly sealing the gap between the installation port 116 and the heating element 12, preventing steam leakage from the steam chamber 10A, ensuring stable steam pressure, and preventing steam from burning surrounding components or affecting the operation of other structures. Meanwhile, the sealing ring 13 can buffer the vibration and friction between the heating component 12 and the side wall of the mounting port 116, protect the contact surface of the two from wear, and extend the service life of the component.

[0100] The pressure cap 14 is connected to the bottom of the evaporation container 11 and covers the installation port 116. The pressure cap 14 can cover the exposed parts of the installation port 116 and the sealing ring 13, reducing the corrosion of external dust, water vapor and other impurities, thus providing protection. The connection structure of the pressure cap 14 is easy to disassemble, providing convenience for later maintenance and replacement of the sealing ring 13 or the heating element 12. In addition, the steam generator 10 also includes a thermostat (not shown), which is installed inside the pressure cap 14. The thermostat is electrically connected to the heating element 12 and is used to control the heating efficiency of the heating element 12.

[0101] Reference Figure 10 and Figure 11 Furthermore, an annular groove 114 is recessed at the bottom of the evaporator 11 on the end face of the mounting port 116. The bottom surface of the annular groove 114 protrudes on the side facing away from the steam chamber 10A to form a sealing surface 1141. The sealing surface 1141 abuts against the surface of the sealing ring 13 facing away from the pressure cap 14. The annular groove 114 provides a precise radial positioning space for the sealing ring 13, which can firmly limit the circumferential displacement of the sealing ring 13 and prevent the sealing ring 13 from deviating from the installation position due to long-term use or vibration, thus ensuring the stability of the sealing structure. The sealing surface 1141 adopts a raised design, which forms a tighter contact with the surface of the sealing ring 13. Compared with the planar contact, it can increase the sealing pressure, further seal the small gaps, significantly improve the sealing reliability, and effectively prevent steam leakage in the steam chamber 10A. At the same time, the combined structure of the annular groove 114 and the sealing surface 1141 allows the sealing ring 13 to be subjected to more uniform force under the dual constraints of axial compression (the action of the gland 14) and radial limiting (the action of the groove), avoiding local compression deformation, extending the service life of the sealing ring 13, and ensuring stable long-term sealing performance.

[0102] Reference Figure 4 and Figure 6 Optionally, the cover 14 includes a cover body 141 and a boss 142, with the cover body 141 connected to the bottom of the evaporation container 11. The cover body 141 effectively blocks the heat from the exposed part of the heating element 12 from spreading outward, reducing heat loss and preventing high temperatures from affecting the normal operation of surrounding components such as the electrical control board 25 and the fan 60, thus providing heat insulation protection. The connection between the cover body 141 and the bottom of the evaporation container 11 provides a stable installation base for the cover 14 and forms a closed protection for structures such as the installation port 116 and the sealing ring 13, reducing the corrosion of internal components by external dust and moisture and extending the service life of the sealing structure and the heating element 12.

[0103] The boss 142 is connected to the side of the cover body 141 near the evaporation container 11, and abuts against the end of the sealing ring 13 away from the steam chamber 10A. The boss 142 can apply a uniform axial clamping force to the sealing ring 13, avoiding insufficient local pressure that could lead to sealing failure. This allows the sealing ring 13 to fit more tightly against the side wall of the mounting port 116 and the periphery of the heating component 12, significantly improving sealing reliability and effectively preventing steam leakage. The structural design of the boss 142 concentrates pressure on the critical sealing area of ​​the sealing ring 13, achieving efficient sealing without increasing the overall volume of the cover body 141. This makes the structure of the pressure cap 14 more compact. At the same time, the boss 142 can restrict the axial displacement of the sealing ring 13, preventing displacement of the sealing ring 13 due to long-term use or vibration, and ensuring long-term stable sealing performance.

[0104] Furthermore, the cover body 141 has a heat dissipation hole 1411, which connects the side of the cover body 141 facing the heating element 12 to the outside. The heat dissipation hole 1411 establishes a heat dissipation channel, which can quickly dissipate the heat from the heating element 12, preventing heat from accumulating inside the cover body 141 and causing excessively high local temperatures. This reduces heat loss and also reduces the impact of high temperatures on the normal operation of components such as the thermostat and wiring terminals inside the cover body 141. In addition, the heat dissipation hole 1411 can reduce pressure, preventing the air pressure generated by thermal expansion and contraction from causing additional stress on structures such as the sealing ring 13 and the pressure cap 14, reducing component aging and wear, extending the service life of the overall sealing structure and the pressure cap 14, and eliminating the need for additional heat dissipation components, simplifying the structural design while ensuring heat dissipation.

[0105] Combined with reference Figure 1 , Figure 12 as well as Figure 13In some embodiments, the steam cleaning device 100 also includes a pressure-injection water box 40, and the side wall of the evaporation container 11 is provided with a water inlet 115, which is connected to the steam chamber 10A. The pressure-injection water box 40 is connected to the water inlet 115 to replenish the cleaning medium to the steam chamber 10A when the water production module 20 is insufficient. First, the pressure-injection water box 40 provides redundant water replenishment for the steam chamber 10A. When the ambient humidity is low, the water production efficiency of the water production module 20 is insufficient, or the equipment needs to run continuously for a long time, the cleaning medium can be quickly replenished through the water box, avoiding the interruption of the steam cleaning function due to the shortage of medium, and ensuring the continuity and stability of the equipment operation. Second, the pressure-injection design is convenient to operate. Users do not need to disassemble the equipment or open the steam chamber 10A. Water replenishment can be completed by pressure injection alone, which greatly reduces the operation threshold and improves the user experience. Furthermore, the water inlet 115 is located on the side wall of the evaporation container 11 and connects to the steam chamber 10A. This layout avoids core structures such as the heating element 12 and the insulated air duct 112, ensuring no interference with steam generation and heat dissipation airflow, and exhibiting strong structural compatibility. Simultaneously, this design balances the convenience of automatic water production with the reliability of manual water replenishment, allowing users to flexibly choose the water replenishment method according to actual usage scenarios, further expanding the equipment's applicability and enhancing its overall practicality.

[0106] Furthermore, the steam cleaning device 100 also includes a second one-way valve 50, which is connected to the side wall of the evaporation container 11 and communicates with the water inlet 115. The second one-way valve 50 is used to allow the cleaning medium to flow from the pressure injection water box 40 into the steam chamber 10A and to prevent the steam in the steam chamber 10A from overflowing in the reverse direction. This design, through its one-way flow characteristic, ensures that the manually injected cleaning medium flows smoothly into the steam chamber 10A, guaranteeing the convenience and efficiency of backup water replenishment. It also precisely prevents steam from overflowing backwards, avoiding steam entering the injection-type water box 40 and causing the cleaning medium to deteriorate. Simultaneously, it prevents steam leakage from scalding users or accelerating the aging of surrounding components, thus improving safety. Furthermore, the second one-way valve 50 and the top first one-way valve 30 work together to protect the manual and automatic water replenishment channels respectively, providing double protection against the risk of steam leakage. Moreover, it directly adapts to the side wall of the evaporation container 11 and the water inlet 115, with a compact structure that requires no adjustment to the existing layout. It perfectly matches the overall sealing and water replenishment logic, further enhancing the operational stability and reliability of the steam cleaning device 100.

[0107] Optionally, the pressure-type water box 40 includes a box body 41 and a pressing piston 42 that can slide within the box body 41. The box body 41 and the pressing piston 42 enclose a water replenishment cavity 40A, and the box body 41 has a water replenishment interface 40B. When the pressing piston 42 presses towards the water replenishment cavity 40A, the volume of the water replenishment cavity 40A is reduced, generating pumping force to pump the cleaning medium in the water replenishment cavity 40A into the steam chamber 10A through the water replenishment interface 40B and the water replenishment inlet 115. This design achieves power output by manually pressing the piston 42, eliminating the need for an additional water pump. This simplifies the structure, reduces the probability of failure, and maintains quiet operation, avoiding mechanical noise interference. The pressing operation is intuitive and convenient; users can precisely control the water replenishment capacity by controlling the pressing stroke to adapt to different cleaning needs. The piston and housing 41 have a strong sliding fit and sealing performance, which can ensure the effective transmission of pump force and allow the cleaning medium to flow smoothly into the steam chamber 10A. It also works in conjunction with the second check valve 50 to ensure that the water replenishment path is unobstructed and to prevent the backflow of steam, further enhancing the reliability and ease of use of the backup water replenishment scheme.

[0108] Furthermore, the pressing piston 42 includes a piston rod 421 and a sealing member 422 connected to each other. The box body 41 and the sealing member 422 enclose each other to form a water replenishment cavity 40A. The piston rod 421 is at least partially located outside the box body 41. The sealing component 422 fits tightly against the inner wall of the housing 41, ensuring the sealing performance of the water replenishment cavity 40A and preventing leakage of the cleaning medium when the pump is pressed. At the same time, it ensures a stable pumping force when the cavity is compressed, allowing the cleaning medium to flow efficiently to the steam cavity 10A. The portion of the piston rod 421 exposed outside the housing 41 provides a convenient grip and pressing fulcrum for the user, making operation effortless and the stroke controllable, further improving the accuracy of the water replenishment capacity. This structure is simple and compact, perfectly matching the overall layout of the pressure-filled water box 40. It not only continues the core advantages of pump-free quiet operation and simplified structure, but also forms a stronger synergy with the second one-way valve 50 through the reliable sealing of the sealing component 422 and the convenient operation of the piston rod 421. This further enhances the sealing, smoothness, and user-friendliness of the manual water replenishment scheme, making it easier for users to deal with large amounts of water replenishment or continuous cleaning scenarios, while also improving the service life and operational reliability of the pressure-filled water box 40.

[0109] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0110] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A steam cleaning device for use in range hoods, characterized in that, The steam washing device includes: A steam generator is provided with a steam chamber and a heat-insulated air duct surrounding the outer periphery of the steam chamber. The steam generator is used to heat the cleaning medium in the steam chamber to generate steam. The heat-insulated air duct has a first vent and a second vent communicating with the external environment. A water-generating module is connected to the steam generator. The water-generating module is provided with an airflow channel, which is positioned opposite to the first vent. The water-generating module is used to condense water vapor in the air and form condensate water when the airflow passes through the airflow channel. This condensate water is then input into the steam chamber to replenish the cleaning medium. A fixed cover is connected to the side of the water production module away from the steam generator, and the fixed cover has an opening for airflow. A fan is installed inside the fixed cover and is positioned opposite the first ventilation opening. The fan is located on the extension path of the airflow channel. The fan drives external airflow to flow sequentially through the heat insulation duct, the airflow channel, and the opening of the fixed cover. The water production module includes: A fixed base is connected to the steam generator and the fixed cover respectively, and the fan is located between the fixed cover and the fixed base; Cooling element, connected to the mounting base, for providing cooling capacity; and The condenser fins are connected to the cooling plate. The condenser fins are used to receive the cooling energy of the cooling plate to condense water vapor in the air to form condensate, and guide the condensate into the steam chamber to replenish the cleaning medium. The fixed base has a first air duct hole that penetrates itself, and the condenser fins have a second air duct hole that penetrates itself. The first air duct hole and the second air duct hole are arranged opposite to each other and are interconnected to form the airflow channel. There is a gap between the mounting base and the end face of the steam generator, and the gap connects the outside world and the surrounding area of ​​the condenser fins.

2. The steam washing apparatus as described in claim 1, characterized in that, The cooling element has a heating surface and a cooling surface arranged opposite to each other, with the cooling surface facing the steam generator and the heating surface facing away from the steam generator. The condenser fins are connected to the surface of the mounting base near the steam generator and abut against the cooling surface. The water production module further includes: The heat dissipation fins are connected to the surface of the fixed base away from the steam generator and abut against the heating surface. The heat dissipation fins are provided with a third air duct hole that penetrates through themselves. The third air duct hole is disposed opposite to and connected to the first air duct hole, and together with the first air duct hole and the second air duct hole, they form the airflow channel.

3. The steam washing apparatus as described in claim 2, characterized in that, The mounting base has a through hole, and the cooling element is embedded in the through hole. The cooling surface and the heating surface of the cooling element are exposed on opposite sides of the mounting base.

4. The steam washing apparatus as described in claim 3, characterized in that, The fixing through hole is located in the radial center region of the fixing seat; And / or, the first air duct hole is provided in multiple ways, and the multiple first air duct holes are evenly distributed around the periphery of the fixed through hole. The second air duct hole and the third air duct hole are provided in multiple ways and are respectively connected to the first air duct hole one by one.

5. The steam washing apparatus as described in claim 3, characterized in that, The mounting base has a positioning groove that is opposite to the steam generator, and the positioning groove is located on one side of the mounting through hole; The water production module also includes an electronic control board, which is embedded in the positioning groove and electrically connected to the cooling element.

6. The steam washing apparatus as described in claim 2, characterized in that, The condenser fins include: A connecting plate, which is connected to the fixed base and abuts against the cooling surface, is provided with a second air duct hole; and Multiple fin groups are arranged along the connecting plate away from the surface of the cooling plate and circumferentially along the connecting plate. Each fin group includes multiple sub-fins spaced apart, and the distance between adjacent sub-fins is D, where 3mm≤D≤5mm.

7. The steam washing apparatus according to any one of claims 1 to 6, characterized in that, The steam generator includes: An evaporation container is provided with the heat-insulating air duct. A first vent and a second vent are respectively located at opposite axial ends of the evaporation container, with the first vent situated at the end of the evaporation container closest to the water-making module. A heating element is sealed to the bottom of the evaporation container to enclose and form the steam chamber. The heating element is used to heat the cleaning medium in the steam chamber, so that the cleaning medium evaporates to form the steam.

8. The steam washing apparatus as described in claim 7, characterized in that, The bottom of the evaporation container is provided with an installation port, and the steam generator further includes: A sealing ring, wherein the sealing ring is sleeved around the periphery of the heating component and embedded in the mounting opening; and A pressure cap is attached to the bottom of the evaporation container and covers the mounting port.

9. The steam washing apparatus as described in claim 8, characterized in that, The bottom of the evaporator is recessed at the end face of the mounting port to form an annular groove. The bottom surface of the annular groove protrudes to the side facing away from the steam chamber to form a sealing surface. The sealing surface abuts against the surface of the sealing ring that is away from the pressure cap.

10. The steam washing apparatus as described in claim 8, characterized in that, The gland includes: A lid body, the lid body being connected to the bottom of the evaporation container; and A boss is attached to the side of the cover body near the evaporation container, and the boss abuts against the end of the sealing ring away from the steam chamber.

11. The steam washing apparatus as described in claim 10, characterized in that, The cover body has a heat dissipation hole, which connects the side of the cover body facing the heating component to the outside.

12. The steam washing apparatus as described in claim 7, characterized in that, It also includes a pressure-injection water box, and the side wall of the evaporation container is provided with a water inlet. The water inlet is connected to the steam chamber. The pressure-injection water box is connected to the water inlet to supplement the steam chamber with cleaning medium when the water production module is insufficient.

13. A range hood, characterized in that, include: Smoke machine frame; A smoking device, connected to the frame of the smoking machine; as well as The steam cleaning device as described in any one of claims 1 to 12, wherein the steam cleaning device is connected to the smoke machine frame for cleaning the smoke machine.

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