A portable steamer that vaporizes sufficiently and has multiple usage modes

Abstract

The application discloses a portable steamer which is sufficient in vaporization and has multiple use modes. The portable steamer comprises a shell, a controller, a dry ironing electric heating element, a steaming electric heating element, a steam cavity, a water storage cavity and a water pump which are installed in the shell. The bottom surface of an iron sole plate is exposed to the outside of the shell, and the iron sole plate has a plurality of steam outlets. The water pump is directly or indirectly connected to the water storage cavity and the steam cavity. The dry ironing electric heating element is directly or indirectly in thermal contact with the iron sole plate. The steaming electric heating element is directly or indirectly in thermal contact with the steam cavity. The water pump, the dry ironing electric heating element and the steaming electric heating element are electrically connected to the controller. The top surface of the iron sole plate is provided with a cavity structure and is connected to the steam cavity. The portable steamer has a dry ironing mode, a steaming mode and a mixed ironing mode. The dry ironing mode can be used for pressing dry ironing. The steaming mode can be used for non-pressing wet steaming. The mixed ironing mode can be used for pressing wet ironing. The portable steamer is flexible in use and can be used for targeted treatment of different cloth and clothes.

Description

Technical Field

[0001] This invention belongs to the field of garment steamer technology, specifically relating to a portable garment steamer that provides complete vaporization and has multiple usage modes. Background Technology

[0002] A steam garment steamer is a household appliance that heats water to vaporize it, forming high-temperature steam, and then sprays the high-temperature steam outwards. It has the effects of ironing and removing wrinkles, sterilizing, and removing mites from fabric clothing.

[0003] Patent document CN202222131314.8 discloses a garment steamer, including a housing, a water pump, a steam generator, and a water tank. The water pump and steam generator are both mounted on the same pre-designed inner wall of the housing. A water tank is located at a first position on the housing, and a steam outlet is located at a second position. The water pump's inlet is connected to the water tank's outlet, and the water pump's outlet is connected to the steam generator's inlet. The steam generator's outlet faces the housing at the second position, allowing steam to be ejected through the steam outlet on the housing at the second position.

[0004] The aforementioned patented technology simplifies the installation process of garment steamers, making the space layout of garment steamers more compact and the garment steamers more portable. However, this patented technology only offers one treatment method for fabric garments: steam fumigation. The usage mode is relatively simple and there is room for improvement. Summary of the Invention

[0005] In view of the problems in related technologies, the present invention proposes a portable garment steamer that provides complete vaporization and has multiple usage modes, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] The technical solution of this invention is implemented as follows:

[0007] A portable garment steamer with efficient vaporization and multiple usage modes includes a housing, a controller, a dry ironing heating element, an iron soleplate, a steaming heating element, a steam chamber, a water storage chamber, and a water pump.

[0008] The controller, dry ironing heating element, steam ironing heating element, steam chamber, water storage chamber and water pump are installed inside the housing. The bottom surface of the iron soleplate is exposed outside the housing. The iron soleplate has several steam outlet holes that penetrate the surface of the plate.

[0009] The water pump is electrically connected to the controller, and the water pump is directly or indirectly connected to the water storage chamber and the steam chamber, respectively.

[0010] The dry ironing heating element is electrically connected to the controller, and the dry ironing heating element forms direct or indirect thermal contact with the soleplate of the iron.

[0011] The steam heating element is electrically connected to the controller, and the steam heating element forms a thermally conductive contact with the steam cavity directly or indirectly.

[0012] The top surface of the iron soleplate has a cavity structure that communicates with the steam cavity, or the iron soleplate serves as the bottom of the steam cavity;

[0013] The portable garment steamer has a dry ironing mode, a steam ironing mode, and a mixed ironing mode.

[0014] When the portable garment steamer is in dry ironing mode, the controller controls the water pump and steaming heating element to turn off, and the dry ironing heating element to turn on. The dry ironing heating element directly or indirectly heats the soleplate of the iron, and the soleplate of the iron heats up and becomes hot, without steam being emitted.

[0015] When the portable garment steamer is in steaming mode, the dry ironing heating element is turned off, and the controller controls the water pump and steaming heating element to turn on. The water pump delivers water from the water storage chamber to the steam chamber, and the steaming heating element heats the steam chamber to form steam. The steam is ejected through the steam outlet of the iron soleplate.

[0016] When the portable garment steamer is in mixed ironing mode, the controller controls the water pump, steam heating element, and dry ironing heating element to turn on. The water pump delivers water from the water storage chamber to the steam chamber. The steam heating element heats the steam chamber to form steam, which is then ejected through the steam outlet of the iron soleplate. Simultaneously, the dry ironing heating element directly or indirectly heats the iron soleplate, causing it to heat up and become hot.

[0017] Preferably, the top of the steam heating element is provided with a vaporization bend and forms a heat-conducting contact, and the vaporization bend is connected to the water pump and the steam chamber respectively.

[0018] Preferably, the top surface of the iron soleplate has a cavity structure, which is designated as a bottom cavity, and the bottom cavity is connected to the steam cavity;

[0019] A heat-conducting shell is installed on the top plate of the iron soleplate, the heat-conducting shell covers the steam outlet, and the heat-conducting shell and the iron soleplate together form the bottom cavity;

[0020] The steam cavity includes an upper heat-conducting cavity shell and a lower heat-conducting cavity shell;

[0021] A one-way valve is provided between the water pump and the vaporization bend, and the vaporization bend, the vapor chamber and the bottom chamber are connected in sequence;

[0022] The vaporization bend, steam heating element, upper heat-conducting cavity shell, lower heat-conducting cavity shell, dry ironing heating element, heat-conducting plate shell, and iron soleplate are stacked sequentially from top to bottom.

[0023] Preferably, the interconnected vaporization bend, vapor chamber, and bottom chamber are configured as a connected cavity group.

[0024] The connecting cavity is connected to a pressure-sensitive protection module, which includes at least one micro switch and an elastic actuating element installed corresponding to the micro switch. The micro switch is electrically connected to the controller.

[0025] The elastic actuator is deformed by the air pressure in the connecting cavity. If the air pressure in the connecting cavity reaches a preset value, the deformation of the elastic actuator is sufficient to trigger the micro switch. The micro switch sends a signal to the controller, and the controller controls the power to be cut off.

[0026] Preferably, the pressure-sensitive protection module includes two microswitches, two elastic actuators mounted on corresponding microswitches, and an alarm.

[0027] The alarm is electrically connected to the controller;

[0028] The air pressure within the connected cavity drives the deformation of any one of the elastic actuating elements or simultaneously drives the deformation of two of the elastic actuating elements.

[0029] If any of the microswitches rusts and becomes damaged, the controller will activate the alarm.

[0030] Preferably, the housing is provided with a handle for the user to grip, the handle is positioned opposite to the iron soleplate, and the interior of the handle is a hollow structure with a water storage cavity.

[0031] Preferably, a steam inlet and a steam outlet are respectively provided on the two sides of the steam cavity that are relatively far apart, and the steam outlet is connected to the bottom cavity;

[0032] The steam outlet is located on the central axis of the lower heat-conducting cavity shell, and the steam outlet is formed by protruding upward from the bottom of the lower heat-conducting cavity shell. The lower heat-conducting cavity shell is provided with a plurality of lower heat-conducting fins, which are mirror-symmetrically distributed on both sides of the lower heat-conducting cavity shell along the central axis, and the plurality of lower heat-conducting fins are inclined toward the steam outlet.

[0033] The upper heat-conducting cavity shell is provided with several upper heat fins that are mirror-symmetrical along the central axis. The upper heat fins are staggered with the lower heat fins. The upper heat fins are provided with a connecting pipe that connects to the pressure-sensitive protection module. The connecting pipe is located above the steam outlet.

[0034] An opening is provided on the side of the upward-protruding steam outlet, and the opening is positioned away from the upper and lower heating fins;

[0035] An anti-escape rubber ring is clamped between the upper heat-conducting cavity shell and the lower heat-conducting cavity shell.

[0036] Preferably, the heat-conducting plate shell is provided with a locking inlet for steam to enter;

[0037] The bottom cavity is provided with a steam passage to guide the flow of steam. The steam passage includes several steam passage branches. At least one steam outlet is located at the end of one of the steam passage branches. The starting ends of the steam passage branches converge below the locking inlet. The path lengths of the steam passage branches are the same or substantially the same.

[0038] Preferably, the plurality of the vehicle access branches include U-shaped branches, J-shaped branches, and I-shaped branches;

[0039] The first end of the U-shaped branch is located below the locking inlet, serving as the starting end of the U-shaped branch, and the second end serves as the tail end of the U-shaped branch. The second end is provided with at least one steam outlet, designated as the first steam outlet.

[0040] The J-shaped branch has a connected long arm section and a hook section. The end of the long arm section is located below the engagement inlet and serves as the starting end of the J-shaped branch. The long arm section partially overlaps with the U-shaped branch. The end of the hook section serves as the tail of the J-shaped branch. The end of the hook section is provided with at least one steam outlet, designated as the second steam outlet. The distance between the second steam outlet and the engagement inlet is greater than the distance between the first steam outlet and the engagement inlet.

[0041] The first end of the I-shaped branch is located below the locking inlet, serving as the starting end of the I-shaped branch. The starting section of the I-shaped branch coincides with the U-shaped branch and the J-shaped branch. The overlapping path of the I-shaped branch and the J-shaped branch is longer than the overlapping path of the I-shaped branch and the U-shaped branch. The second end of the I-shaped branch is provided with at least one steam outlet, designated as the third steam outlet. The distance between the third steam outlet and the locking inlet is greater than the distance between the second steam outlet and the locking inlet.

[0042] Preferably, the road segment in which the U-shaped branch, J-shaped branch and I-shaped branch all overlap is designated as the first overlapping road segment, and the road segment in which the I-shaped branch only overlaps with the J-shaped branch is designated as the second overlapping road segment.

[0043] A first intercepting protrusion is provided at the exit of the first overlapping road section. One end of the first intercepting protrusion faces and is close to the exit of the first overlapping road section, and the other end extends and bends as part of the U-shaped branch road bend.

[0044] The exit at the end of the second overlapping road segment is provided with a second intercepting protrusion. One end of the second intercepting protrusion faces and is close to the middle of the second overlapping road segment, and the other end extends and bends as part of the bending section of the J-shaped branch.

[0045] The U-shaped branch, J-shaped branch and I-shaped branch are respectively provided in two symmetrical sets on the top surface of the iron sole plate, and the locking inlet is located in the middle of the symmetrical U-shaped branch;

[0046] The steam outlets are provided in six or multiples of six, and the steam outlets are evenly distributed at the ends of the U-shaped branches, J-shaped branches and I-shaped branches.

[0047] The beneficial effects of this invention are:

[0048] Compared with existing technologies, this invention has dry ironing mode, steam ironing mode, and mixed ironing mode, which are flexible in use and can be more targeted to treat different fabrics and garments. Specifically:

[0049] When the portable garment steamer is in dry ironing mode, the controller controls the water pump and steaming heating element to turn off, and the dry ironing heating element to turn on. The dry ironing heating element directly or indirectly heats the soleplate of the iron, and the soleplate of the iron heats up and becomes hot without steam being emitted, which can perform press-type dry ironing on fabric garments.

[0050] When the portable garment steamer is in steaming mode, the dry ironing heating element is turned off, and the controller controls the water pump and steaming heating element to turn on. The water pump delivers water from the water storage chamber to the steam chamber, and the steaming heating element heats the steam chamber to form steam. The steam is ejected through the steam outlet of the iron soleplate, which can perform non-pressing wet steaming of fabric garments.

[0051] When the portable garment steamer is in mixed ironing mode, the controller controls the water pump, steam heating element, and dry ironing heating element to turn on. The water pump delivers water from the water storage chamber to the steam chamber, and the steam heating element heats the steam chamber to form steam. The steam is ejected through the steam outlet of the iron soleplate. At the same time, the dry ironing heating element directly or indirectly heats the iron soleplate, causing it to heat up and become hot, allowing for press-type wet ironing of fabric garments. Attached Figure Description

[0052] Figure 1 This is one of the structural schematic diagrams of the present invention;

[0053] Figure 2 This is the second structural schematic diagram of the present invention.

[0054] Figure 3 This is an exploded view of the present invention;

[0055] Figure 4 This is the third structural schematic diagram of the present invention (shell omitted);

[0056] Figure 5 This is one of the flow direction diagrams of the present invention;

[0057] Figure 6 This is the fourth structural schematic diagram of the present invention (shell omitted);

[0058] Figure 7 This is the second schematic diagram of the flow direction of the present invention;

[0059] Figure 8 This is a top view of the vaporization bend of the present invention;

[0060] Figure 9 This is a cross-sectional view of the present invention;

[0061] Figure 10 This is an exploded view of the structure of the gas cavity of the present invention;

[0062] Figure 11 This is a schematic diagram of the structure of the lower heat-conducting cavity shell of the present invention;

[0063] Figure 12 This is an exploded view of the bottom cavity and the dry ironing heating element of the present invention;

[0064] Figure 13 This is a schematic diagram of the structure of the iron soleplate of the present invention;

[0065] Figure 14 This is a schematic diagram of the steam flow within the bottom cavity of the present invention;

[0066] Figure 15 This is one of the schematic diagrams showing the main water distribution after the device is turned off.

[0067] Figure 16 This is the second schematic diagram showing the main water distribution after the device is turned off.

[0068] Marker explanation:

[0069] 1. Water storage chamber;

[0070] 2. Vaporization bend; 201. Steam heating element; 202. Heat transfer plate; 203. Outlet; 204. Inlet; 205. L-shaped section; 206. First U-shaped section; 207. Second U-shaped section; 208. I-shaped section;

[0071] 3. Check valve;

[0072] 4. Water pump;

[0073] 5. Pressure-sensitive protection module; 501. Micro switch; 502. Fixing kit; 502a. Interface;

[0074] A. Steam cavity;

[0075] 6. Upper heat-conducting cavity shell; 601. Upper heat-conducting fins; 602. Connecting pipe;

[0076] 7. Anti-escape rubber ring;

[0077] 8. Lower heat-conducting cavity shell; 801. Steam inlet; 802. Lower heating fins; 803. Steam outlet; 803a. Opening; 803b. Pipe clamping structure; 804. U-shaped cavity;

[0078] B. Floor cavity; U. U-shaped branch; J. J-shaped branch; I. I-shaped branch;

[0079] 9. Heating element for dry ironing;

[0080] 10. Heat-conducting plate shell; 1001. Mounting cavity; 1002. Snap-fit ​​inlet; 1003. Reinforcing grid;

[0081] 11. Housing; 1101. Handle;

[0082] 12. Iron soleplate;

[0083] 1201, Steam outlet; 1201U, First steam outlet; 1201J, Second steam outlet; 1201I, Third steam outlet;

[0084] 1202, Steam guide channel;

[0085] 1203, Circular slot;

[0086] 1204, circumferential protrusion;

[0087] 1205, First overlapping section;

[0088] 1206. First intercepting bulge;

[0089] 1207, Second overlapping section;

[0090] 1208. Second intercepting bulge;

[0091] 1209. Fluid accumulation cavity;

[0092] 13. Thermal insulation pads. Detailed Implementation

[0093] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0094] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., 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 invention 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 invention.

[0095] like Figures 1 to 12 As shown, a portable garment steamer with sufficient vaporization and multiple usage modes includes a housing 11, a controller, a dry ironing heating element 9, an iron soleplate 12, a steaming heating element 201, a steam chamber A, a water storage chamber 1, and a water pump 4.

[0096] The controller, dry ironing heating element 9, steam ironing heating element 201, steam chamber A, water storage chamber 1 and water pump 4 are installed inside the housing 11. The bottom surface of the iron soleplate 12 is exposed outside the housing 11. The iron soleplate 12 has a plurality of (specifically six) steam outlet holes 1201 penetrating the surface of the plate.

[0097] The water pump 4 is electrically connected to the controller, and the water pump 4 is directly or indirectly connected to the water storage chamber 1 and the steam chamber A, respectively.

[0098] The dry ironing heating element 9 is electrically connected to the controller, and the dry ironing heating element 9 forms direct or indirect thermal contact with the iron soleplate 12.

[0099] The steam heating element 201 is electrically connected to the controller, and the steam heating element 201 forms a direct or indirect thermal contact with the steam cavity A.

[0100] The top surface of the iron soleplate 12 is provided with a cavity structure and communicates with the steam cavity A (i.e., in this embodiment), or the iron soleplate serves as the bottom of the steam cavity A.

[0101] Compared with existing technologies, this embodiment has dry ironing mode, steam ironing mode, and mixed ironing mode, which are flexible in use and can be more targeted to treat different fabrics and garments. Specifically:

[0102] When the portable garment steamer is in dry ironing mode, the controller controls the water pump 4 and the steam heating element 201 to turn off, and the dry ironing heating element 9 to turn on. The dry ironing heating element 9 directly or indirectly supplies heat to the iron soleplate 12, the iron soleplate 12 heats up and becomes hot, and no steam is ejected from the steam outlet 1201, which can perform press-type dry ironing on fabric garments.

[0103] When the portable garment steamer is in steaming mode, the dry ironing heating element 9 is turned off, and the controller controls the water pump 4 and the steaming heating element 201 to turn on. The water pump 4 delivers water from the water storage chamber 1 to the steam chamber A, and the steaming heating element 201 heats the steam chamber A to form steam. The steam is ejected through the steam outlet 1201 of the iron soleplate 12, which can perform non-pressing wet steaming of fabric clothing.

[0104] When the portable garment steamer is in mixed ironing mode, the controller controls the water pump 4, the steam heating element 201, and the dry ironing heating element 9 to turn on. The water pump 4 delivers water from the water storage chamber 1 to the steam chamber A. The steam heating element 201 heats the steam chamber A to form steam. The steam is ejected through the steam outlet 1201 of the iron soleplate 12. At the same time, the dry ironing heating element 9 directly or indirectly heats the iron soleplate 12. The iron soleplate 12 heats up and becomes hot, allowing for press-type wet ironing of fabric garments.

[0105] In actual product design, the three modes of this embodiment can be selected and switched by users through setting up a button control panel, a touch control panel, a voice recognition module, etc. Those skilled in the art can also add conventional components such as a display screen, a temperature sensor, and a power module as needed. These are all conventional technologies in the art and will not be described in detail.

[0106] On the other hand, this embodiment uses water pump 4 to generate high-pressure driving force for transporting steam, eliminating the pressure chamber design that accounts for a large proportion of the volume in existing garment steamer products, making this embodiment compact and easy to carry. The steam range of this embodiment can reach more than 2 meters.

[0107] The steam heating element 201 and the dry ironing heating element 9 can be metal heating tubes, heating films, heating wires, PTC heating plates, etc., without any special restrictions. Specifically, in this embodiment, the steam heating element 201 is a metal heating tube, and the dry ironing heating element 9 is a PTC heating plate (with a temperature control range of 80-200℃).

[0108] Because the water transported under high pressure flows at a relatively fast speed, in order to further improve the vaporization effect of the water in this embodiment, a vaporization bend 2 is stacked on the top of the steam heating element 201 and forms a thermally conductive contact. The vaporization bend 2 is connected to the water pump 4 and the steam chamber A respectively. The function of the vaporization bend 2 is to pre-treat the water, that is, to perform preliminary vaporization of the water to form a water-vapor mixture, and then transport it to the steam chamber A for complete or nearly complete vaporization.

[0109] In this embodiment, the top surface of the iron soleplate 12 is provided with a cavity structure, designated as bottom cavity B, which is connected to the steam cavity A.

[0110] The top plate of the iron soleplate 12 is equipped with a heat-conducting shell 10 with an open bottom and good thermal conductivity. The heat-conducting shell 10 covers all the steam outlets 1201. The heat-conducting shell 10 and the iron soleplate 12 together form the bottom cavity B.

[0111] The steam cavity A includes an upper heat-conducting cavity shell 6 and a lower heat-conducting cavity shell 8, both with good thermal conductivity.

[0112] A one-way valve 3 is provided between the water pump 4 and the vaporization bend 2 to prevent backflow.

[0113] The vaporization bend 2, steam heating element 201, upper heat-conducting cavity shell 6, lower heat-conducting cavity shell 8, dry ironing heating element 9, heat-conducting plate shell 10, and iron soleplate 12 are stacked sequentially from top to bottom. The steam heating element 201 can simultaneously heat the vaporization bend 2 and the steam cavity A; the dry ironing heating element 9 can simultaneously provide heat to the steam cavity A and the heat-conducting plate shell 10, and the heat-conducting plate shell 10 then conducts the heat to the iron soleplate 12.

[0114] The stacking arrangement described above makes the structure of this embodiment concise and compact, which fits the pursuit of small size products, while maximizing the use of the heat of the heating elements. In addition, since the steam chamber A needs to achieve complete or nearly complete vaporization of the water-air mixture, it is necessary to ensure that the steam chamber A has the most sufficient heat. This embodiment achieves this by setting the steaming heating element 201 and the dry ironing heating element 9 in close contact above and below the steam chamber A, respectively.

[0115] The vaporization bend 2, the steam chamber A, and the bottom chamber B are connected in sequence. The vaporization bend 2 treats the water into a water-vapor mixture, completing the initial vaporization. The steam chamber A completely or almost completely vaporizes the water-vapor mixture. The bottom chamber B maintains the water in a completely vaporized state or completely vaporizes the remaining trace amount of water-vapor mixture. The water gradually achieves complete vaporization during the transportation process, so that this embodiment has a sufficient steam output, improving the treatment effect and efficiency of clothing fabrics.

[0116] Considering another common problem with existing garment steamers, namely that after each use and shutdown, unreleased steam remains inside the steam chamber A and bottom chamber B, and as the temperature decreases after shutdown, the unreleased steam condenses back into a small amount of water in the steam chamber A and bottom chamber B. When the garment steamer is turned on again, the condensate formed during the previous shutdown is easily sprayed out with the newly formed steam, especially in the bottom chamber with the steam outlet 1201. Therefore, in this embodiment, both steam chamber A and bottom chamber B are designed as flat cavities, that is, maximizing the horizontal area of ​​the cavity as much as possible. When the garment steamer is turned on again, the condensate formed during the previous shutdown is quickly vaporized again due to the large contact area with the cavity wall, thus minimizing the problem of water droplets being sprayed out when the garment steamer is first turned on.

[0117] Specifically, a heat transfer plate 202 is provided between the vaporization bend 2 and the steam heating element 201 (electric heating metal tube). Both the vaporization bend 2 and the heat transfer plate 202 are made of metal with good thermal conductivity. The vaporization bend 2 is closely attached to and welded to the top surface of the heat transfer plate 202, and the steam heating element 201 is welded to the bottom surface of the heat transfer plate 202.

[0118] The two ends of the vaporization bend 2 extend beyond the edge of the heat transfer plate 202. The remaining sections of the vaporization bend 2 are bent several times horizontally on the top surface of the heat transfer plate 202 without extending beyond the edge of the heat transfer plate 202, thereby maximizing the contact heat transfer area and extending the travel distance of the water within the vaporization bend 2 to ensure the initial vaporization effect.

[0119] The vaporization bend 2 has an inlet 204 and an outlet 203 at both ends. The inlet 204 is directly or indirectly connected to the water pump 4, and the outlet 203 is directly or indirectly connected to the vapor chamber A.

[0120] The heat transfer plate 202 is square in shape and has a first side, a second side, a third side, and a fourth side connected sequentially. The vaporization bend 2 is provided with an L-shaped section 205, a first U-shaped section 206, a second U-shaped section 207, and an I-shaped section 208 sequentially starting from the inlet. The tail of the I-shaped section 208 serves as the outlet 203, and the sections transition smoothly from one another.

[0121] The outer side of the L-shaped segment 205 is flush with the first and second side edges, the outer side of the first U-shaped segment 206 is flush with the third side edge, the second U-shaped segment 207 is located inside the L-shaped segment 205, and the outer side of the I-shaped segment 208 is flush with the fourth side edge.

[0122] The vaporization bend 2, steam chamber A, and bottom chamber B are connected and configured as a connected group of cavities. With increased usage time, scale may accumulate in narrow structures such as the steam outlet, potentially causing blockages and increasing pressure within the connected group of cavities. Therefore, the connected group of cavities is connected to a pressure-sensitive protection module 5. The pressure-sensitive protection module 5 includes at least one microswitch 501 and a corresponding elastic actuating element (e.g., spring, contact spring, etc.) mounted on the microswitch 501. The microswitch 501 is electrically connected to the controller.

[0123] The elastic actuator is deformed by the air pressure in the connecting cavity. If the air pressure in the connecting cavity reaches a preset value, the deformation of the elastic actuator is sufficient to trigger the micro switch 501. The micro switch 501 sends a signal to the controller, and the controller controls the power to be cut off, thereby reminding the user to stop using the device until the air pressure drops, or to check for scale buildup.

[0124] Specifically, in this embodiment, the pressure-sensitive protection module 5 includes two microswitches 501, two elastic actuators installed on the corresponding microswitches 501, and an alarm, wherein the alarm is electrically connected to the controller.

[0125] The air pressure within the connected cavity drives the deformation of any one of the elastic actuating elements or simultaneously drives the deformation of two of the elastic actuating elements, and the principle of safe power-off is the same as described above.

[0126] If any of the microswitches 501 rusts and becomes damaged, the controller will activate the alarm.

[0127] Although the connected cavities are waterproofed in this embodiment, each component may still inevitably come into contact with a small amount of moisture. As the usage time increases, the micro switch 501 may rust and become damaged, its sensitivity may decrease, and its resistance may increase. The increased resistance of the micro switch 501 will trigger the controller to activate the alarm, reminding the user to pay attention to the maintenance or replacement of the garment steamer.

[0128] Specifically, the warning device can be a buzzer, indicator light, etc., and its type, model and activation are all conventional technologies without special restrictions.

[0129] In addition, considering that ironing often occurs shortly before a user leaves for an important occasion, and that the probability of both microswitches 501 rusting and breaking at the same time is extremely low, this embodiment is equipped with two microswitches 501. Even if one microswitch 501 is warned of damage during ironing, after the air pressure drops or limescale is cleaned and the embodiment is restarted, the other microswitch 501 can still ensure the safe power-off function, allowing the user to at least finish ironing the clothes at the time without delaying the user's attendance at the important occasion, and then return the embodiment to the factory for repair or purchase a new one.

[0130] Specifically, the pressure-sensitive protection module 5 also includes a fixing kit 502. One side of the fixing kit 502 is provided with an interface 502a that connects to the connecting cavity, and the other side is equipped with two elastic actuators.

[0131] The pressure-sensitive protection module 5 and the water pump 4 are respectively installed on both sides of the connecting cavity assembly. Specifically, the top surface of the iron soleplate 12 is provided with an annular heat insulation pad 13, which surrounds the bottom cavity B. The housing 11, the water pump 4, and the pressure-sensitive protection module 5 are all installed and fixed to the heat insulation pad 13 to avoid direct contact with the high-temperature iron soleplate 12.

[0132] In this embodiment, the housing 11 is provided with an L-shaped handle 1101 for the user to grip. The handle 1101 is arranged opposite to the iron soleplate 12 and conforms to the gripping angle and force direction of the user's palm in various modes. The handle 1101 has a hollow structure inside and is provided with the water storage cavity 1.

[0133] Specifically, the top of the handle 1101 can be designed as a separate handle top cover. The handle top cover can be disassembled and installed as needed to add water to the water storage chamber 1, or the water inlet of the water storage chamber 1 can be directly set on the handle shell of the handle 1101, and a sealing plug that can be disassembled and installed as needed can be designed for it.

[0134] In this embodiment, steam inlet 801 and steam outlet 803 are respectively provided on the two sides of the steam chamber A that are relatively far apart, so that the input water vapor mixture travels a long distance in the steam chamber A and is fully vaporized before being output. The steam outlet 803 is connected to the bottom chamber B.

[0135] The steam outlet 803 is located on the central axis of the lower heat-conducting cavity shell 8, and the steam outlet 803 is formed by protruding upward from the bottom of the lower heat-conducting cavity shell 8, so as to prevent water from the bottom of the steam cavity A from flowing into the bottom cavity B before it is completely vaporized.

[0136] The lower heat-conducting cavity shell 8 is provided with a plurality of lower heat-conducting fins 802, which are formed by protruding upward from the bottom of the lower heat-conducting cavity shell 8. The plurality of lower heat-conducting fins 802 are mirror-symmetrically distributed on both sides of the lower heat-conducting cavity shell 8 along the central axis. The plurality of lower heat-conducting fins 802 are inclined toward the steam outlet 803 to guide the steam flow toward the steam outlet 803.

[0137] The upper heat-conducting cavity shell 6 is provided with a plurality of upper heat-conducting fins 601 that are mirror-symmetrical along the central axis. The upper heat-conducting fins are V-shaped and their tips face the steam outlet 803. The upper heat-conducting fins 601 are formed by protruding downward from the top surface of the upper heat-conducting cavity shell 6.

[0138] The upper heating fin 601 and the lower heating fin 802 are staggered, which has high thermal conductivity, increases the high-temperature specific surface area of ​​the steam cavity A, improves vaporization efficiency, increases the probability of contact with droplets in the water vapor mixture, and ensures that the droplets are fully vaporized before being output.

[0139] The upper heat-conducting cavity shell 6 is provided with a connecting pipe 602 that connects to the pressure-sensing protection module 5. The connecting pipe 602 is located above the steam outlet 803. The bottom cavity B is located below the steam outlet 803. The connection at this position can quickly provide feedback on air pressure changes to the pressure-sensing protection module 5 and cut off power in a timely manner.

[0140] An opening 803a is provided on the side of the upward-protruding steam outlet 803 to increase the area of ​​steam flowing to the bottom cavity B. The opening 803a is positioned away from the upper heating fin 601 and the lower heating fin 802 to prevent rapidly transported droplets from rushing directly into the bottom cavity B through the opening 803a.

[0141] The main body of the steam chamber A is a flat square cavity. The edge of the square cavity protrudes outward to form a U-shaped small cavity 804. The steam outlet 803 is located in the U-shaped small cavity 804. Combined with the distribution and orientation design of the upper and lower hot fins, the steam can be more accurately guided to flow to the steam outlet 803.

[0142] An anti-escape rubber ring 7 is sandwiched between the upper heat-conducting cavity shell 6 and the lower heat-conducting cavity shell 8 to prevent steam from escaping or residual water from overflowing.

[0143] In this embodiment, the bottom of the steam outlet 803 protrudes downward to form a clamping structure 803b, and the heat-conducting plate shell 10 is provided with a clamping inlet 1002 for steam to enter and adapted to the clamping structure 803b. The bottom cavity B and the steam cavity A are connected through the sealed clamping structure 803b and the clamping inlet 1002.

[0144] Specifically, the top of the heat-conducting plate shell 10 is provided with an integrally formed mounting cavity 1001, in which the dry ironing heating element 9 (PTC heating plate) is placed, and the top of the mounting cavity 1001 is open so that the dry ironing heating element 9 can be closely attached to the bottom of the steam cavity A.

[0145] Because the bottom cavity B is a flat, ultra-thin cavity design, the heat-conducting shell 10 is a thin plate structure. At the same time, the top surface of the heat-conducting shell 10 also supports the related structures and components of the vapor cavity A and the vaporization bend 2. The heat-conducting shell 10 may deform and bend. Therefore, the top surface of the heat-conducting shell 10 is provided with densely arranged reinforcing grids 1003 around the mounting cavity 1001 to improve the structural strength of the heat-conducting shell 10.

[0146] In this embodiment, the bottom cavity B is provided with steam passages to guide steam flow, and the steam passages include several (specifically six) steam passage branches. At least one steam outlet 1201 is provided at the end of one of the steam passage branches. Preferably, the number of steam outlets 1201 at the end of a steam passage branch is equal to ensure uniform steam output as much as possible. In this embodiment, the number of steam passage branches corresponds to the number of steam outlets 1201. The starting ends of the steam passage branches converge below the locking inlet 1002, and the path lengths of the steam passage branches are the same or substantially the same.

[0147] In this embodiment, a steam channel is specifically designed between the locking inlet 1002 and the steam outlet 1201 to guide the steam. The path length of each branch of the steam channel is the same or basically the same, so that after the steam enters the bottom cavity B from the locking inlet 1002, the path length of the steam to the steam outlet 1201 under the guidance of the steam channel branches is the same or basically the same, so that the steam output of each steam outlet 1201 is basically the same, thereby giving this embodiment a uniform steam output effect and improving the processing efficiency and effect of fabrics and clothing.

[0148] In this embodiment, the steam passage branches include U-shaped branches, J-shaped branches and I-shaped branches (indicated by the letters U, J and I in the figure respectively). This shape design not only ensures that the path length of each steam passage branch is basically the same and that the steam outlets 1201 are evenly distributed on the iron bottom plate 12, but also allows the starting section of each steam passage branch to be shared, resulting in a simple and compact structure.

[0149] The first end of the U-shaped branch is located below the locking inlet 1002, serving as the starting end of the U-shaped branch, and the second end serves as the tail end of the U-shaped branch. The second end is provided with at least one steam outlet 1201 (specifically one), designated as the first steam outlet 1201U.

[0150] The J-shaped branch has a connecting long arm section and a hook section. The end of the long arm section is located below the locking inlet 1002 and serves as the starting end of the J-shaped branch. The long arm section partially overlaps with the U-shaped branch. The end of the hook section serves as the tail of the J-shaped branch. The end of the hook section is provided with at least one steam outlet 1201, designated as the second steam outlet 1201J. The distance between the second steam outlet 1201J and the locking inlet 1002 is greater than the distance between the first steam outlet 1201J and the locking inlet 1002.

[0151] The first end of the I-shaped branch is located below the locking inlet 1002, serving as the starting end of the I-shaped branch. The starting section of the I-shaped branch coincides with the U-shaped branch and the J-shaped branch. The overlapping path of the I-shaped branch and the J-shaped branch is longer than the overlapping path of the I-shaped branch and the U-shaped branch. The second end of the I-shaped branch is provided with at least one (specifically one) steam outlet 1201, designated as the third steam outlet 1201I. The distance between the third steam outlet 1201I and the locking inlet 1002 is greater than the distance between the second steam outlet 1201J and the locking inlet 1002.

[0152] Specifically, the road segment where the U-shaped branch, J-shaped branch and I-shaped branch all overlap is designated as the first overlapping road segment 1205, and the road segment where the I-shaped branch only overlaps with the J-shaped branch is designated as the second overlapping road segment 1207.

[0153] A first intercepting protrusion 1206 is provided at the outlet of the first overlapping section 1205. One end of the first intercepting protrusion 1206 faces and is close to the outlet of the first overlapping section 1205, and the other end extends and bends as part of the U-shaped branch bend section, dividing the steam flow into two streams. One stream flows to the tail of the U-shaped branch, and the other stream enters the J-shaped branch.

[0154] The outlet at the end of the second overlapping section 1207 is provided with a second intercepting protrusion 1208. One end of the second intercepting protrusion 1208 faces and is close to the middle of the second overlapping section 1207, and the other end extends and bends as part of the bending section of the J-shaped branch, dividing the steam flow into two streams. One stream flows to the tail of the J-shaped branch, and the other stream enters the I-shaped branch.

[0155] To ensure uniform heat distribution in terms of steam outlet area and iron soleplate 12, in this embodiment, two symmetrical sets of U-shaped, J-shaped, and I-shaped branches are respectively provided on the top surface of the iron soleplate 12. The locking inlet 1002 is located in the middle of the symmetrical U-shaped branch. There are six steam outlets 1201, which are evenly distributed at the tail ends of the U-shaped, J-shaped, and I-shaped branches.

[0156] In this embodiment, the top surface of the iron soleplate 12 is provided with an annular groove protruding upwards. The annular groove 1203 surrounds the steam passage. An anti-escape rubber ring 7 is placed in the annular groove 1203. The bottom of the heat-conducting plate shell 10 is provided with an annular protrusion that fits the annular groove. The annular protrusion is engaged in the annular groove 1203 and squeezes the anti-escape rubber ring 7 to prevent steam or liquid droplets from flowing to a position outside the bottom cavity B, which would cause the shell 11 to become too hot to the touch. It also has the function of protecting the components.

[0157] The top surface of the iron soleplate 12 has several protruding strips extending upwards. The top of the protruding strips fits tightly against the top of the open bottom heat-conducting plate shell 10 to seal it and ensure the guiding effect of steam. The protruding strips serve as the sidewalls of the steam passage branch.

[0158] In this embodiment, the top surface of the iron soleplate 12 is provided with an upwardly protruding annular protrusion 1204 along the periphery of the steam outlet 1201. If condensation forms in the bottom cavity B, the annular protrusion 1204 can prevent the condensation from flowing out through the steam outlet 1201. The height of the annular protrusion 1204 is less than the height of the protrusion strip, ensuring that steam can be output outward.

[0159] Steam rushes to the tail end of each steam channel branch, forming an impact vortex. The airflow at this location is relatively turbulent, which is not conducive to smooth steam discharge. At the same time, steam impact and aggregation to form droplets are also more likely to occur at this location. Therefore, the steam outlet 1201 is not located close to the tail end of the U-shaped branch, J-shaped branch and I-shaped branch. A steam buffer space and a condensate collection space are reserved between the steam outlet 1201 and the tail end of the U-shaped branch, J-shaped branch and I-shaped branch.

[0160] Specifically, the protrusions on the outer wall of the U-shaped branch do not contact the annular groove to form a water accumulation cavity 1209 for diverting and temporarily storing the condensate formed after shutdown.

[0161] The symmetrical branch shape design of the two sets of branches on the soleplate and the position design of the steam vents not only ensure uniform steam output, but also effectively solve the existing technical problem of "a small amount of condensation forming in the cavity when the machine is off, which may cause water droplets to spray out the next time it is turned on." The specific analysis is as follows:

[0162] Based on its shape, this embodiment can reasonably predict that there are approximately three possible placement methods after the user shuts down the device:

[0163] 1. After turning off the machine, store it flat. When turning it on again, the condensate in the bottom cavity B will be spread horizontally on the soleplate 12 of the iron, which is the maximum contact area. The soleplate 12 of the iron, which heats up rapidly after turning on the machine, can quickly vaporize the small amount of condensate formed when the machine was turned off, so as to solve the problem of water droplets spraying out when the machine is turned on.

[0164] 2. After powering off, store the device vertically, referring to... Figure 15 The main water distribution diagram (the water location is shown in shaded areas, but does not represent the amount of water) clearly shows that the design of the branch circuits and steam outlets can disperse the condensate in several locations, which is beneficial to speeding up the vaporization of the condensate after startup compared to the condensate being concentrated in one location.

[0165] 3. After powering off, store the device in its side-lying position. When the user picks it up and powers it on, and then switches it to the vertical position, refer to [the instructions]. Figure 16 The main water distribution diagram (the water location is shown in shaded areas, but does not represent the amount of water) clearly shows that, regardless of whether the embodiment is placed on its side or is picked up and turned into a vertical position by the user's hand movements, the design of the branch circuits and steam outlets in this embodiment can still disperse the condensate in several locations, which is beneficial to speeding up the vaporization of the condensate after the machine is turned on.

[0166] In this embodiment, the iron soleplate 12 extends outward on both sides and gradually decreases in width to form ironing corners. The ironing corners extend beyond the side of the housing 11, making it convenient for ironing in narrower areas of the fabric.

[0167] In this embodiment, the outer surface of the iron soleplate 12 is recessed inward to form a plurality of steam guide grooves 1202 for guiding steam diffusion. The steam guide grooves 1202 communicate with the steam outlet 1201. Specifically, the outer surface of the iron soleplate 12 is recessed inward at the V-shaped turning point of the steam outlet 1201 to form V-shaped steam guide grooves 1202. When this embodiment is in the mixed ironing mode, the iron soleplate 12 is in close contact with the fabric. The design of the guide grooves can expand the contact area between the steam and the fabric, improve the ironing effect, and avoid localized over-wetting of the clothes.

[0168] It should be noted that the thermally conductive components or metals mentioned in this embodiment can be made of materials such as aluminum, copper, iron, and stainless steel. Those skilled in the art can select the thermally conductive material according to actual product design and cost control considerations. Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this invention should also fall within the protection scope of the claims of this invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this invention.

Claims

1. A portable garment steamer with efficient vaporization and multiple usage modes, characterized in that, Includes housing, controller, dry ironing heating element, iron soleplate, steam ironing heating element, steam chamber, water storage chamber and water pump; The housing is provided with a handle for the user to grip; the controller, dry ironing heating element, steam ironing heating element, steam chamber, water storage chamber and water pump are installed inside the housing, the bottom surface of the iron soleplate is exposed outside the housing, and the iron soleplate has several steam outlet holes penetrating the surface of the plate; The water pump is electrically connected to the controller, and the water pump is directly or indirectly connected to the water storage chamber and the steam chamber, respectively. The steam cavity includes an upper heat-conducting cavity shell and a lower heat-conducting cavity shell; steam inlets and steam outlets are respectively provided on the two sides of the steam cavity that are relatively far apart; The steam outlet is located on the central axis of the lower heat-conducting cavity shell, and the steam outlet is formed by protruding upward from the bottom of the lower heat-conducting cavity shell. The lower heat-conducting cavity shell is provided with a plurality of lower heating fins, which are mirror-symmetrically distributed on both sides of the lower heat-conducting cavity shell along the central axis, and the plurality of lower heating fins are inclined toward the steam outlet. The upper heat-conducting cavity shell is provided with a plurality of upper heating fins mirror-symmetrically distributed along the central axis, and the upper heating fins are staggered with the lower heating fins. The side of the upwardly protruding steam outlet is provided with an opening, which is disposed away from the upper heating fins and the lower heating fins. An anti-escape rubber ring is clamped between the upper heat-conducting cavity shell and the lower heat-conducting cavity shell. The dry ironing heating element is electrically connected to the controller, and the dry ironing heating element forms direct or indirect thermal contact with the soleplate of the iron. The steam heating element is electrically connected to the controller, and the steam heating element forms a thermally conductive contact with the steam cavity directly or indirectly. The top surface of the iron soleplate has a cavity structure that communicates with the steam cavity, or the iron soleplate serves as the bottom of the steam cavity; The portable garment steamer has a dry ironing mode, a steam ironing mode, and a mixed ironing mode. When the portable garment steamer is in dry ironing mode, the controller controls the water pump and steaming heating element to turn off, and the dry ironing heating element to turn on. The dry ironing heating element directly or indirectly heats the soleplate of the iron, and the soleplate of the iron heats up and becomes hot, without steam being emitted. When the portable garment steamer is in steaming mode, the dry ironing heating element is turned off, and the controller controls the water pump and steaming heating element to turn on. The water pump delivers water from the water storage chamber to the steam chamber, and the steaming heating element heats the steam chamber to form steam. The steam is ejected through the steam outlet of the iron soleplate. When the portable garment steamer is in mixed ironing mode, the controller controls the water pump, steam heating element, and dry ironing heating element to turn on. The water pump delivers water from the water storage chamber to the steam chamber. The steam heating element heats the steam chamber to form steam, which is then ejected through the steam outlet of the iron soleplate. Simultaneously, the dry ironing heating element directly or indirectly heats the iron soleplate, causing it to heat up and become hot.

2. The portable garment steamer with complete vaporization and multiple usage modes according to claim 1, characterized in that, The top of the steam heating element is stacked with a vaporization bend and forms a heat-conducting contact. The vaporization bend is connected to the water pump and the steam chamber respectively.

3. The portable garment steamer with complete vaporization and multiple usage modes according to claim 2, characterized in that, The top surface of the iron soleplate has a cavity structure, which is designated as the bottom cavity, and the bottom cavity is connected to the steam cavity; A heat-conducting shell is installed on the top plate of the iron soleplate, the heat-conducting shell covers the steam outlet, and the heat-conducting shell and the iron soleplate together form the bottom cavity; A one-way valve is provided between the water pump and the vaporization bend, and the vaporization bend, the vapor chamber and the bottom chamber are connected in sequence; The vaporization bend, steam heating element, upper heat-conducting cavity shell, lower heat-conducting cavity shell, dry ironing heating element, heat-conducting plate shell, and iron soleplate are stacked sequentially from top to bottom.

4. The portable garment steamer with complete vaporization and multiple usage modes according to claim 3, characterized in that, The interconnected vaporization bend, vapor chamber, and bottom chamber are configured as a connected cavity group. The connecting cavity is connected to a pressure-sensitive protection module, which includes at least one micro switch and an elastic actuating element installed corresponding to the micro switch. The micro switch is electrically connected to the controller. The elastic actuator is deformed by the air pressure in the connecting cavity. If the air pressure in the connecting cavity reaches a preset value, the deformation of the elastic actuator is sufficient to trigger the micro switch. The micro switch sends a signal to the controller, and the controller controls the power to be cut off.

5. The portable garment steamer with complete vaporization and multiple usage modes according to claim 4, characterized in that, The pressure-sensitive protection module includes two microswitches, two elastic actuators installed on the corresponding microswitches, and an alarm. The alarm is electrically connected to the controller; The air pressure within the connected cavity drives the deformation of any one of the elastic actuating elements or simultaneously drives the deformation of two of the elastic actuating elements. If any of the microswitches rusts and becomes damaged, the controller will activate the alarm.

6. The portable garment steamer with sufficient vaporization and multiple usage modes according to any one of claims 1 to 3, characterized in that, The handle is positioned opposite the iron soleplate, and the handle has a hollow interior with a water storage cavity.

7. The portable garment steamer with complete vaporization and multiple usage modes according to claim 4, characterized in that, The steam outlet is connected to the bottom cavity; the upper heating fin is provided with a connecting pipe that connects to the pressure-sensitive protection module, and the connecting pipe is located above the steam outlet.

8. The portable garment steamer with complete vaporization and multiple usage modes according to claim 3, characterized in that, The heat-conducting plate shell is provided with a locking inlet for steam to enter; The bottom cavity is provided with a steam passage to guide the flow of steam. The steam passage includes several steam passage branches. At least one steam outlet is located at the end of one of the steam passage branches. The starting ends of the steam passage branches converge below the locking inlet. The path lengths of the steam passage branches are the same or substantially the same.

9. The portable garment steamer with complete vaporization and multiple usage modes according to claim 8, characterized in that, Several of the aforementioned bus branch roads include U-shaped branch roads, J-shaped branch roads, and I-shaped branch roads; The first end of the U-shaped branch is located below the locking inlet, serving as the starting end of the U-shaped branch, and the second end serves as the tail end of the U-shaped branch. The second end is provided with at least one steam outlet, designated as the first steam outlet. The J-shaped branch has a connected long arm section and a hook section. The end of the long arm section is located below the engagement inlet and serves as the starting end of the J-shaped branch. The long arm section partially overlaps with the U-shaped branch. The end of the hook section serves as the tail of the J-shaped branch. The end of the hook section is provided with at least one steam outlet, designated as the second steam outlet. The distance between the second steam outlet and the engagement inlet is greater than the distance between the first steam outlet and the engagement inlet. The first end of the I-shaped branch is located below the locking inlet, serving as the starting end of the I-shaped branch. The starting section of the I-shaped branch coincides with the U-shaped branch and the J-shaped branch. The overlapping path of the I-shaped branch and the J-shaped branch is longer than the overlapping path of the I-shaped branch and the U-shaped branch. The second end of the I-shaped branch is provided with at least one steam outlet, designated as the third steam outlet. The distance between the third steam outlet and the locking inlet is greater than the distance between the second steam outlet and the locking inlet.

10. The portable garment steamer with complete vaporization and multiple usage modes according to claim 9, characterized in that, The road segment in which the U-shaped branch, J-shaped branch and I-shaped branch all overlap is designated as the first overlapping road segment, and the road segment in which the I-shaped branch only overlaps with the J-shaped branch is designated as the second overlapping road segment. A first intercepting protrusion is provided at the exit of the first overlapping road section. One end of the first intercepting protrusion faces and is close to the exit of the first overlapping road section, and the other end extends and bends as part of the U-shaped branch road bend. The exit at the end of the second overlapping road segment is provided with a second intercepting protrusion. One end of the second intercepting protrusion faces and is close to the middle of the second overlapping road segment, and the other end extends and bends as part of the bending section of the J-shaped branch. The U-shaped branch, J-shaped branch and I-shaped branch are respectively provided in two symmetrical sets on the top surface of the iron sole plate, and the locking inlet is located in the middle of the symmetrical U-shaped branch; The steam outlets are provided in six or multiples of six, and the steam outlets are evenly distributed at the ends of the U-shaped branches, J-shaped branches and I-shaped branches.

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