Hanging-preventing garment steamer

Abstract

The utility model relates to the technical field of ironing machines, in particular to an anti-dripping garment steamer. According to the garment steamer capable of preventing water dripping, the heating body is arranged on the ironing structure, the secondary vaporizing chamber is arranged in the ironing structure, and the spiral water-steam separation channel is arranged in the secondary vaporizing chamber, so that water-drop-containing steam which is not completely heated and vaporized in the steam generating chamber enters the secondary vaporizing chamber of the ironing structure; water drops which are not completely vaporized are retained in the secondary vaporizing chamber through the water-vapor separation effect of the spiral water-vapor separation channel, are continuously heated until the water drops are vaporized, and then are sprayed out through the secondary steam spraying holes; according to the garment steamer, the steam containing water drops is better prevented from being sprayed out by the ironing plate, the steam spraying amount of the garment steamer is guaranteed, the problem that the steam quality is reduced due to scale production in the using process of the handheld garment steamer is effectively solved, and the ironing effect and the clothes care quality are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ironing machine technical field, specifically relates to the steam garment steamer of preventing hanging water. BACKGROUND

[0002] With the increasing demand of people on the quality of life, the steam garment steamer has become the indispensable equipment in modern family clothes care. However, long-term use of tap water as the source of generating steam has caused a common problem: the inside of the steam generator, including its inner wall and heating tube, is easy to accumulate scale. The formation of these scales is mainly because the minerals contained in tap water will be precipitated and deposited when heated, gradually covering the surface of the heating tube and the inner wall of the steam generator. The existence of scale, on the one hand, reduces the heat transfer efficiency of the heating tube, and on the other hand, causes part of the water to fail to completely convert into steam in the steam generator, but remains in the form of water droplets in the steam. When the ironing plate releases steam containing water droplets, not only the ironing effect will be greatly discounted, but also the surface of the clothes may leave water marks, thereby affecting the appearance of the clothes. SUMMARY

[0003] The purpose of the utility model is to overcome the problem that the existing steam garment steamer releases steam containing water droplets due to the accumulation of scale in the heating tube after long-term use, and to provide a steam garment steamer that prevents water from being hung by setting a secondary vaporization chamber and a centrifugal water-vapor separation structure in the ironing structure to reheat and vaporize the liquid that has not completely vaporized.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The steam garment steamer that prevents water from being hung, comprising a machine body, the machine body includes a water tank, a steam generation structure and an ironing structure; the water tank is provided with a water storage cavity located on the inner side and a water outlet connected with the water storage cavity; the steam generation structure includes a steam generation module and a water pump, the water pump is communicated with the water outlet and the steam generation module respectively, the water pump sends water to the steam generation module, the steam generation module includes a steam generation chamber, a heating tube located in the steam generation chamber and a steam outlet, after the water is pumped into the steam generation chamber, it is heated and vaporized by the heating tube and discharged through the steam outlet; the ironing structure includes an ironing surface located at the bottom, a secondary vaporization chamber located on the inner side and a heating body, the secondary vaporization chamber is provided with an inlet hole communicated with the steam outlet, the ironing surface is provided with a secondary steam injection hole communicated with the secondary vaporization chamber, the secondary vaporization chamber is provided with a centrifugal water-vapor separation structure, the centrifugal water-vapor separation structure includes a spiral water-vapor separation channel, the spiral water-vapor separation channel is open at the outer end, the secondary steam injection hole is located at the center position of the spiral water-vapor separation channel, and the heating body is used for re-heating and vaporizing the liquid that has not completely vaporized in the secondary vaporization chamber to discharge it from the secondary steam injection hole.

[0006] Compared with the prior art, the steam garment steamer capable of preventing water from being attached has the following advantages: the steam generation chamber, the heating body and the secondary vaporization chamber are arranged in the ironing structure, the steam containing water droplets which is not completely heated and vaporized in the steam generation chamber is completely heated and vaporized into steam by the heating body when entering the secondary vaporization chamber of the ironing structure, and the steam containing water droplets is sprayed out through the secondary steam injection hole, the water droplets which are not completely vaporized are retained in the secondary vaporization chamber and heated into steam through the spiral water-vapor separation channel, and then the steam is sprayed out through the secondary steam injection hole, so that the steam containing water droplets is prevented from being sprayed out of the ironing plate, the steam injection amount of the garment steamer is ensured, the problem of steam quality reduction caused by scale in the process of using the handheld steam garment steamer is solved, and the ironing effect and the quality of clothes care are improved.

[0007] Further, the steam output port is arranged at the front side of the secondary steam injection hole, and the outer end opening of the spiral water-vapor separation channel is arranged on the side away from the steam output port.

[0008] Further, the secondary vaporization flow channel is arranged in the secondary vaporization chamber, the centrifugal water-vapor separation structure is arranged at the end of the secondary vaporization flow channel, and the spiral water-vapor separation channel extends in the spiral shape with at least 0.5 turns.

[0009] Further, the secondary vaporization flow channel side wall located at the front side of the centrifugal water-vapor separation structure is provided with a water-vapor circulation guide part, the water-vapor circulation guide part extends to the inner arc of the centrifugal water-vapor separation structure, the outer end of the water-vapor circulation guide part and the other side wall of the secondary vaporization flow channel form a water-vapor circulation guide inlet, the end of the secondary vaporization flow channel is in the circular arc shape, and the outer periphery of the centrifugal water-vapor separation structure, the secondary vaporization flow channel side wall and the water-vapor circulation guide part form a water-vapor circulation guide channel.

[0010] Further, the secondary vaporization chamber comprises a primary vaporization flow channel and water vapor conveying channels connected to the two sides of the primary vaporization flow channel respectively and extending to the rear side, the water vapor conveying channels are provided with guide vanes, the guide vanes divide the water vapor conveying channels into water storage and heating flow channels and the secondary vaporization flow channel, the water storage and heating flow channels and the secondary vaporization flow channel are open at the side end close to the primary vaporization flow channel, the water storage and heating flow channels are located inside the secondary vaporization flow channel, the primary vaporization flow channel is provided with a primary steam injection hole, the end of the secondary vaporization flow channel is provided with a water vapor circulation guide part and a centrifugal water vapor separation structure respectively; in this way, the steam and water droplets entering the secondary vaporization chamber are separated by the guide vanes, the separated water droplets are heated and vaporized again in the water storage and heating flow channels and then discharged through the steam injection hole, and the separated steam can be normally discharged from the secondary steam injection hole, thereby ensuring the steam discharge effect.

[0011] Further, the guide vanes extend to the inner arc of the side of the primary vaporization flow channel, and the opening width of the water storage and heating flow channel close to the side of the primary vaporization flow channel is greater than the opening width of the secondary vaporization flow channel close to the side of the primary vaporization flow channel; in this way, more liquid water droplets can enter the water storage and heating flow channel for heating and vaporization again under the guide action of the guide vanes, thereby ensuring the heating and vaporization effect of the liquid in the secondary vaporization chamber.

[0012] Further, the primary vaporization flow channel and the two primary vaporization flow channels form a secondary vaporization chamber in the shape of an inverted U from front to rear, the inside of the secondary vaporization chamber is provided with an avoidance area, and the heating body is located in the avoidance area; in this way, the heating body is arranged on the same plane as the secondary vaporization chamber at the middle of the top of the ironing structure, so that the overall structure of the garment steamer can be made thinner and more compact.

[0013] Further, the steam outlet is staggered relative to the primary steam injection hole, a side blocking part is arranged on the periphery of the primary steam injection hole in the secondary vaporization chamber, the steam outlet is located at the bottom of the steam generation module, and the steam outlet extends to the secondary vaporization chamber through a steam inlet hole and abuts against the upper side of the side blocking part; in this way, the steam with water droplets generated by the steam outlet can be prevented from being directly injected through the primary steam injection hole, and the side blocking part arranged on the periphery of the primary steam injection hole can prevent water droplets from flowing out of the primary steam injection hole directly during horizontal ironing, thereby preventing water stains on the clothes.

[0014] Further, the ironing structure comprises an ironing plate and an inner cover, the secondary vaporization chamber comprises a secondary vaporization cavity arranged on the upper side of the ironing plate and open at the upper side, the inner cover is used for covering the opening of the secondary vaporization chamber, the steam injection hole is arranged at the bottom of the ironing plate, and the steam inlet hole is arranged on the inner cover; in this way, the secondary vaporization chamber is arranged in a simple structure, thereby facilitating the manufacturing of the ironing structure.

[0015] Furthermore, the secondary vaporization chamber is provided with an annular guide groove corresponding to the steam outlet, the side baffle is located at the rear end of the annular guide groove, and the steam outlet is located in front of the primary steam nozzle; with this arrangement, when the handheld steam garment steamer is used for vertical steaming, the steam ejected from the steam outlet can be guided through the annular guide groove and discharged through the primary steam nozzle, ensuring the steam discharge effect of the primary steam nozzle. Attached Figure Description

[0016] Figure 1 A diagram illustrating a garment steamer designed to prevent water from getting stuck in the garment.

[0017] Figure 2 An exploded diagram of a garment steamer designed to prevent water from being trapped inside.

[0018] Figure 3 A cross-sectional view of a garment steamer designed to prevent water from getting stuck in the garment.

[0019] Figure 4 This is a schematic diagram of the steam generation structure and the ironing structure.

[0020] Figure 5 This is a schematic diagram of a steam generation structure.

[0021] Figure 6 This is a schematic diagram of the top of the ironing board.

[0022] Figure 7 for Figure 6 A magnified view of a portion of region A in the middle. Detailed Implementation

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0024] See Figures 1 to 7The utility model discloses a steam press of prevent hanging water, including body 1 and the handheld part 11 of connecting on body 1, body 1 includes water tank 2, steam generation structure 3 and ironing structure 4, water tank 2 is equipped with the water storage cavity 21 of inside and the water outlet 22 of connecting water storage cavity 21, steam generation structure 3 includes steam generation module and water pump 31, water pump 31 respectively with water outlet 22 and steam generation module intercommunication, water pump sends steam generation module, steam generation module includes steam generation chamber 32, the heating tube 33 in steam generation chamber 32 and steam output 34, water is pumped into steam generation chamber 32 after, by heating tube 33 heating vaporization and is discharged through steam output 34, ironing structure 4 includes the ironing surface 41 of bottom, the secondary vaporization chamber 42 of inside and heating body 43, secondary vaporization chamber 42 is equipped with the steam inlet hole 44 of intercommunication steam output 34, and the ironing surface 41 is equipped with the secondary steam jet hole 46 of intercommunication secondary vaporization chamber 42, and secondary vaporization chamber 42 is equipped with centrifugal water vapor separation structure 6 in, and centrifugal water vapor separation structure 6 includes spiral water vapor separation channel 61, and spiral water vapor separation channel 61 outer end opening, secondary steam jet hole 46 is located at the central position of spiral water vapor separation channel 61, and heating body 43 is used to heat again vaporization for the liquid of entering secondary vaporization chamber 42 not completely vaporization and makes it from secondary steam jet hole 46 discharge.

[0025] Compared with the prior art, the steam press of prevent hanging water of the utility model, through to ironing structure 4 configuration heating body 43 and set up secondary vaporization chamber 42 in ironing structure 4, and set up spiral water vapor separation channel 61 in secondary vaporization chamber 42, make steam containing water droplet that steam generation chamber 32 is not completely heated vaporization when entering ironing structure 4 secondary vaporization chamber 42, through the heating of heating body 43 again completely vaporization become steam and from secondary steam jet hole 46 and spray, and for not completely vaporization water droplet, continue heating to steam in secondary vaporization chamber 42 after the water vapor separation of spiral water vapor separation channel 61 again through secondary steam jet hole 46 and spray, better avoid ironing board 491 and spray steam containing water droplet, guarantee the steam spray amount of press, effectively solve the steam quality decline problem that handheld steam press causes in the use process because of incrustation, significantly improve the ironing effect and the quality of clothes care.

[0026] See Figures 2 to 7 In an embodiment, the steam output 34 is provided in front of the secondary steam jet hole 46, and the outer end opening of the spiral water vapor separation channel 61 is provided on the side away from the steam output 34. By such arrangement, the steam output 34 inputting steam with water droplets is prevented from directly entering the spiral water vapor separation channel 61, and the water droplets sprayed from the secondary steam jet hole 46 are better isolated.

[0027] See Figures 2 to 7In an embodiment, the secondary vaporization flow channel 427 is provided in the secondary vaporization chamber 42, and the centrifugal water-vapor separation structure 6 is arranged at the end of the secondary vaporization flow channel 427, and the spiral water-vapor separation channel 61 extends in a spiral shape with at least 0.5 turns. In this way, the steam containing water droplets flows outside the spiral water-vapor separation channel 61, and the steam with a small weight moves in a centripetal motion to enter the secondary steam injection hole 46, while the water droplets with a large weight move in a centrifugal motion and cannot enter the secondary steam injection hole 46, thereby achieving water-vapor separation, and the water-vapor separation effect is good.

[0028] Referring to Figures 2 to 7 In an embodiment, the water-vapor circulation guide part 62 is arranged on the front side of the centrifugal water-vapor separation structure 6, and extends inward to the side of the centrifugal water-vapor separation structure 6, and the water-vapor circulation guide inlet 63 is formed between the outer end of the water-vapor circulation guide part 62 and the other side wall of the secondary vaporization flow channel 427, and the end of the secondary vaporization flow channel 427 is in a circular arc shape, and the water-vapor circulation guide channel 64 is formed between the outer periphery of the centrifugal water-vapor separation structure 6 and the side wall of the secondary vaporization flow channel 427 and the water-vapor circulation guide part 62. In this way, when the water droplets are separated in the spiral water-vapor separation channel 61, they can circulate in the water-vapor circulation guide channel 64 until they are completely heated and vaporized and then discharged through the secondary steam injection hole 46, so that the liquid in the secondary vaporization chamber 42 is fully heated and vaporized.

[0029] Referring to Figures 2 to 7 In an embodiment, the secondary vaporization chamber 42 includes a primary vaporization flow channel 423 and water-vapor transport channels 424 connected to the two sides of the primary vaporization flow channel 423 and extending to the rear side, respectively, and the water-vapor transport channels 424 are provided with guide ribs 425, which divide the water-vapor transport channels 424 into a water storage and heating flow channel 426 and the secondary vaporization flow channel 427, and the water storage and heating flow channel 426 and the secondary vaporization flow channel 427 are open at the end near the primary vaporization flow channel 423, and the water storage and heating flow channel 426 is located inside the secondary vaporization flow channel 427, and the primary vaporization flow channel 423 is provided with a primary steam injection hole 45, and the end of the secondary vaporization flow channel 427 is provided with a water-vapor circulation guide part 62 and a centrifugal water-vapor separation structure 6, respectively. In this way, the steam and water droplets entering the secondary vaporization chamber 42 are separated by the guide ribs 425, the separated water droplets are heated and vaporized again in the water storage and heating flow channel 426 and then discharged through the steam injection hole, and the separated steam can be normally discharged from the secondary steam injection hole 46, thereby ensuring the steam discharge effect.

[0030] Referring to Figures 2 to 7In an embodiment, the guide ribs 425 extend to the inner arc of one side of the primary vaporization flow channel 423, the other side of the guide ribs 425 is connected to the inner side wall of the water vapor conveying channel 424, the opening width of the water storage heating flow channel 426 near one side of the primary vaporization flow channel 423 is greater than the opening width of the secondary vaporization flow channel 427 near one side of the primary vaporization flow channel 423; by such arrangement, more liquid water droplets can enter the water storage heating flow channel 426 for re-heating vaporization through the guide effect of the guide ribs 425, and the heating vaporization effect of the liquid in the secondary vaporization chamber 42 is ensured.

[0031] Referring to Figures 2 to 7 In an embodiment, the primary vaporization flow channel 423 and the two primary vaporization flow channels 423 form a secondary vaporization chamber 42 in the shape of an inverted U from front to back, the inner side of the secondary vaporization chamber 42 is provided with an avoidance area 47, and the heating element 43 is located in the avoidance area 47; by such arrangement, the heating element 43 is arranged on the top middle part of the ironing structure 4 and is arranged on the same plane as the secondary vaporization chamber 42, so that the overall structure of the garment steamer can be made thinner and more compact.

[0032] Referring to Figures 2 to 7 In an embodiment, the steam outlet 34 is staggered relative to the primary steam jet hole 45, a circumferential side stop 48 is arranged on the outer periphery of the primary steam jet hole 45 in the secondary vaporization chamber 42, and the steam outlet 34 is located at the bottom of the steam generation module and extends to the secondary vaporization chamber 42 through the steam inlet hole 44 and abuts against the upper side of the side stop 48; by such arrangement, water droplets in the steam generated by the steam outlet 34 can be prevented from being directly jetted out through the primary steam jet hole 45, and the side stop 48 arranged on the outer periphery of the primary steam jet hole 45 can prevent water droplets from flowing out directly through the primary steam jet hole 45 during horizontal ironing, thereby preventing water stains on the clothes.

[0033] Referring to Figures 2 to 7 In an embodiment, the ironing structure 4 includes an ironing plate 491 and an inner cover 492, the secondary vaporization chamber 42 includes a secondary vaporization cavity 421 arranged on the upper side of the ironing plate 491 and having an upper side opening, the inner cover 492 is used to cover the opening of the secondary vaporization chamber 42, the steam jet hole is arranged at the bottom of the ironing plate 491, the steam inlet hole 44 is arranged on the inner cover 492, the upper side of the ironing plate 491 is provided with an insertion slot 401 on the outer periphery of the secondary vaporization chamber 42, and the edge of the outer periphery of the inner cover 492 is inserted into the insertion slot 401 to cover the opening of the secondary vaporization chamber 42; by such arrangement, the secondary vaporization chamber 42 is simple in structure and convenient for manufacturing the ironing structure 4.

[0034] Referring to Figures 2 to 7In an embodiment, the secondary vaporization chamber 42 is provided with an annular guide groove 422 corresponding to the steam outlet 34, the side block 48 is arranged at the rear end inside the annular guide groove 422, and the steam outlet 34 is located at the front side of the primary steam injection hole 45. In this way, when the handheld garment steamer is vertically hung, the steam sprayed by the steam outlet 34 can be guided through the annular guide groove 422 and discharged through the primary steam injection hole 45, thereby ensuring the steam discharge effect of the primary steam injection hole 45.

[0035] Referring to Figures 2 to 7 In an embodiment, the water tank 2 is provided with a water pouring port 21 at the top for adding steam water to the water tank 2, and the water pouring port 21 is provided with a detachable water plug 25. The handheld part 11 is arranged on the upper side of the water tank 2, the steam generation structure 3 is arranged on the lower side of the water tank 2, the water pump 31 is arranged at the rear side of the steam generation chamber 32, the ironing structure 4 is arranged on the lower side of the steam generation structure 3, the temperature sensor 35 is arranged at the bottom of the steam generation structure 3 and is attached to the bottom of the steam generation chamber 32, the temperature sensor 35 is arranged at the front side of the heating body 43 and is located in the avoidance area 47, the ironing plate 491 and the inner cover 492 are made of heat-conducting materials, such as metal materials, and the heating body 43 is attached to the top of the ironing plate 491.

[0036] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A steam press for preventing water from being caught, comprising a body, characterized in that, The machine body comprises: a water tank provided with a water storage cavity on the inner side and a water outlet connected to the water storage cavity; a steam generating structure comprising a steam generating module and a water pump, the water pump being in communication with the water outlet and the steam generating module respectively, the water pump pumping water to the steam generating module, the steam generating module comprising a steam generating chamber, a heating tube in the steam generating chamber, and a steam outlet, the water being pumped into the steam generating chamber, heated by the heating tube, vaporized, and discharged through the steam outlet; an ironing structure comprising an ironing surface on the bottom, a secondary vaporization chamber on the inner side, and a heating body, the secondary vaporization chamber being provided with an inlet hole in communication with the steam outlet, the ironing surface being provided with a secondary steam injection hole in communication with the secondary vaporization chamber, the secondary vaporization chamber being provided with a centrifugal water-vapor separation structure, the centrifugal water-vapor separation structure comprising a spiral water-vapor separation channel, the spiral water-vapor separation channel having an outer end opening, the secondary steam injection hole being located at the center of the spiral water-vapor separation channel, and the heating body being used for re-heating and vaporizing the liquid that has not been completely vaporized when entering the secondary vaporization chamber so as to discharge it from the secondary steam injection hole.

2. The anti-water-stripping garment steamer according to claim 1, characterized in that, The steam outlet is located on the front side of the secondary steam injection hole, and the outer end opening of the spiral water-vapor separation channel is located on the side away from the steam outlet.

3. The anti-water-stripping garment steamer according to claim 2, characterized in that, The secondary vaporization chamber is provided with a secondary vaporization flow channel, the centrifugal water-vapor separation structure is located at the end of the secondary vaporization flow channel, and the spiral water-vapor separation channel extends in a spiral shape with at least 0.5 turns.

4. The anti-water-stripping garment steamer according to claim 3, characterized in that, The side wall of the secondary vaporization flow channel is provided with a water-vapor circulation guide part on the front side of the centrifugal water-vapor separation structure, the water-vapor circulation guide part extends to the inner arc of one side of the centrifugal water-vapor separation structure, a water-vapor circulation guide inlet is formed between the outer end of the water-vapor circulation guide part and the other side wall of the secondary vaporization flow channel, the end of the secondary vaporization flow channel is in a circular arc shape, and a water-vapor circulation guide channel is formed between the outer periphery of the centrifugal water-vapor separation structure and the side wall of the secondary vaporization flow channel and the water-vapor circulation guide part.

5. The anti-water-stripping garment steamer according to claim 4, characterized in that, The secondary vaporization chamber comprises a primary vaporization flow channel and water-vapor conveying channels connected to the two sides of the primary vaporization flow channel and extending to the rear side respectively, the water-vapor conveying channels are provided with guide ribs, the guide ribs divide the water-vapor conveying channels into a water storage and heating flow channel and the secondary vaporization flow channel, the water storage and heating flow channel and the secondary vaporization flow channel are open at the end close to the primary vaporization flow channel, the water storage and heating flow channel is located on the inner side of the secondary vaporization flow channel, the primary vaporization flow channel is provided with a primary steam injection hole, and the end of the secondary vaporization flow channel is provided with a water-vapor circulation guide part and a centrifugal water-vapor separation structure respectively.

6. The anti-water-stripping garment steamer according to claim 5, characterized in that, The guide ribs extend to the inner arc of the side of the primary vaporization flow channel, and the opening width of the water storage and heating flow channel close to the side of the primary vaporization flow channel is greater than the opening width of the secondary vaporization flow channel close to the side of the primary vaporization flow channel.

7. The anti-water-stripping garment steamer according to claim 5, characterized in that, The primary vaporization flow channel and the two primary vaporization flow channels constitute a secondary vaporization chamber in an inverted U-shaped form from front to back, the secondary vaporization chamber is provided with an avoidance area on the inner side, and the heating body is located in the avoidance area.

8. The anti-water-stripping garment steamer according to claim 5, characterized in that, The steam output port is opposite to the primary steam injection hole, a side blocking part is arranged on the periphery of the primary steam injection hole in the secondary vaporization chamber, the steam output port is arranged at the bottom of the steam generation module, the steam output port extends to the secondary vaporization chamber through the steam inlet hole and abuts against the upper side of the side blocking part.

9. The anti-water-stripping garment steamer according to claim 8, characterized in that, The ironing structure comprises an ironing plate and an inner cover, the secondary vaporization chamber comprises a secondary vaporization cavity arranged on the upper side of the ironing plate and open on the upper side, the inner cover is used for covering the opening of the secondary vaporization chamber, the steam injection hole is arranged at the bottom of the ironing plate, and the steam inlet hole is arranged on the inner cover.

10. The anti-water-stripping garment steamer according to claim 8, characterized in that, The secondary vaporization chamber is provided with an annular flow guide groove corresponding to the steam output port, the side blocking part is arranged at the inner side rear end of the annular flow guide groove, and the steam output port is located at the front side of the primary steam injection hole.

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