A steam valve and heating device

Abstract

The utility model discloses a steam valve and heating device. Steam valve includes: valve seat, steam outlet structure, including steam guide portion and steam outlet portion, steam guide portion is connected in valve seat, and has the steam inlet channel, and steam outlet portion is equipped with the intercommunication chamber and steam outlet channel, and the intercommunication chamber links with steam inlet channel, steam outlet channel respectively and intercommunication, wherein, steam outlet channel includes a plurality, and a plurality of steam outlet channels are along the circumferential distribution of intercommunication, and the edge of steam outlet portion is equipped with a plurality of extension mouth, and one extension mouth corresponds and the outlet of one steam outlet channel is linked with each other, and each extension mouth extends to the circumferential of steam outlet portion, and the cover is set up in the steam outlet portion outside, and is equipped with the discharge port in the extension mouth. The steam valve in the utility model, through being equipped with a plurality of extension mouth in the edge of steam outlet portion, owing to the extension mouth along the circumferential of steam outlet portion having certain extension length, can increase the contact area of steam and food, makes food heated more evenly, thereby guaranteeing the production taste of food.

Description

Technical Field

[0001] This utility model belongs to the field of heating kettle technology, specifically relating to a steam valve and heating device. Background Technology

[0002] A health-preserving kettle is a heating device used for cooking food. In existing health-preserving kettles, steam is directly discharged from the side of the steam valve, resulting in a small contact area with the food and uneven heating of the food, which leads to poor taste. Utility Model Content

[0003] The purpose of this invention is to disclose a steam valve to solve the problem of poor food heating in the prior art.

[0004] To achieve the above objectives, one aspect of this utility model discloses a steam valve, comprising: Valve seat; A steam outlet structure includes a steam guiding section and a steam outlet section. The steam guiding section is connected to the valve seat and has a steam inlet channel. The steam outlet section has a connecting cavity and a steam outlet channel. The connecting cavity is connected to the steam inlet channel and the steam outlet channel, respectively. The steam outlet channel includes multiple channels, which are distributed circumferentially along the connecting cavity. The edge of the steam outlet section has multiple extension ports, and each extension port is connected to the outlet of a corresponding steam outlet channel. Each extension port extends circumferentially towards the steam outlet section. A valve cover is provided on the outside of the steam outlet section, and an outlet is provided corresponding to the extension port.

[0005] As an optional implementation, each of the steam outlet channels extends in a spiral manner, and the extension opening is located in the spiral direction of the steam outlet channel.

[0006] As an optional implementation, along the circumference of the steam outlet portion, the central angle corresponding to the extension arc length of the extension port is in the range of 10° < θ < 30°.

[0007] As an optional implementation, the steam inlet channel has a steam outlet communicating with the communicating cavity; The steam valve also includes a first sealing structure, which is movably installed at the steam outlet and can open the steam outlet under the impact pressure of steam, and can seal the steam outlet when the impact pressure of steam disappears.

[0008] As an optional implementation, the steam outlet includes an installation sub-port and a steam outlet sub-port; The first sealing structure includes a connecting section and a cover section. The connecting section is installed at the mounting port, and the outer diameter of the cover section is larger than the outer diameter of the connecting section. It is movably covered at the steam outlet port for opening or sealing the steam outlet port.

[0009] As an optional implementation, the mounting port is conical, and the diameter of the mounting port gradually decreases in the direction away from the steam outlet portion; The connecting section includes a locking head and a supporting head. The supporting head and the covering section are located at both ends of the locking head. The outer diameter of the supporting head is larger than the outer diameter of the locking head. The locking head is locked into the mounting port.

[0010] As an optional implementation, the steam valve further includes a second sealing structure, which is movably disposed at the steam inlet of the steam inlet channel, for opening the steam inlet channel when receiving a lifting force from an external structure, and for sealing the steam inlet when the lifting force is lost.

[0011] As an optional implementation, the second sealing structure includes an elastic element and a second sealing element. The two ends of the elastic element abut against the steam outlet portion and the second sealing element, respectively, for applying an elastic force to the second sealing element. The second sealing element is used to receive the lifting force.

[0012] As an optional implementation, the steam valve further includes a plastic component, which is disposed at the air inlet end of the steam guide portion and connected between the valve seat and the steam guide portion. The plastic component has a connecting channel that communicates with the steam inlet channel and cooperates with the second sealing element to open or close the steam inlet.

[0013] Another aspect of this utility model discloses a heating device, comprising: Steam generator base; The heating element is detachably mounted on the steam generator base; The steam valve described above is installed at the bottom of the heating kettle and can be connected to the steam generating base to introduce steam into the heating kettle.

[0014] Compared with the prior art, the advantages of the steam valve and heating device of this utility model are as follows: The steam valve of this utility model has a connecting cavity on the steam outlet section to receive steam flowing from the steam inlet channel. When the steam is discharged from the steam outlet channel, it impacts the valve cover and is temporarily stored in the connecting cavity due to the obstruction of the valve cover. Then, it is dispersed from the connecting cavity to each steam outlet channel for discharge. Because there is an extension port on the edge of the steam outlet section, the steam does not directly impact the steam when it flows out of the steam channel, but flows out gradually along the extension port. Since the extension port has a certain extension length along the circumference of the steam outlet section, it can increase the contact area between the steam and the food, so that the food is heated more evenly, thereby ensuring the taste of the food. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the steam valve according to the first embodiment of this utility model; Figure 2 yes Figure 1 An exploded view of the steam valve in the diagram; Figure 3 yes Figure 1 A top view of the steam valve in the middle; Figure 4 yes Figure 3 A cross-sectional view along the AA direction; Figure 5 yes Figure 2 A schematic diagram of the steam outlet structure in the middle; Figure 6 yes Figure 5 A top view of the steam outlet structure in the middle; Figure 7 yes Figure 2 A schematic diagram of the first sealing structure in the diagram; Figure 8 This is a reference diagram showing the usage state of the steam valve according to the first embodiment of this utility model; Figure 9 This is a schematic diagram of the heating device according to the second embodiment of the present invention.

[0017] Explanation of key figure labels: 100-Steam valve, 10-Valve seat, 11-Internal thread, 12-Slot, 20-Steam outlet structure, 21-Steam guide section, 211-Steam inlet channel, 212-Steam inlet, 213-Steam outlet, 2131-Mounting port, 2132-Steam outlet port, 22-Steam outlet section, 221-Connecting cavity, 222-Steam outlet channel, 223-Outlet, 224-External thread, 23-Extension port, 30-Valve cover, 31-Drain Outlet, 40-First sealing structure, 41-Connecting section, 411-Clamping head, 412-Supporting head, 42-Covering section, 43-Force-applying section, 50-Second sealing structure, 51-Elastic element, 52-Second sealing element, 60-Plastic part, 61-Supporting block, 62-Insertion ring, 63-Supporting ring, 70-Sealing ring, 200-Heating device, 210-Steam generating base, 220-Heating kettle body, 300-Water body. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0022] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0023] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0024] Please see Figures 1 to 8 The first embodiment of this application provides a steam valve 100, which includes a valve seat 10 and a steam outlet structure 20.

[0025] Please refer to Figures 1 to 5 The valve seat 10 serves as the mounting base. The steam outlet structure 20 includes a steam guide section 21 and a steam outlet section 22. The steam guide section 21 is connected to the valve seat 10 and has a steam inlet channel 211. The steam outlet section 22 is provided with a connecting cavity 221 and a steam outlet channel 222. The connecting cavity 221 is connected to the steam inlet channel 211 and the steam outlet channel 222 respectively. The steam outlet channel 222 includes multiple channels, and the multiple steam outlet channels 222 are distributed circumferentially along the connecting cavity 221. The edge of the steam outlet section 22 is provided with multiple extension ports 23. Each extension port 23 is connected to the outlet 223 of a corresponding steam outlet channel 222. Each extension port 23 extends circumferentially towards the steam outlet section 22. The valve cover 30 is placed over the steam outlet section 22 and has an outlet 31 corresponding to the extension port 23.

[0026] The steam valve 100 described above has a connecting cavity 221 on the steam outlet section 22 to receive steam flowing from the steam inlet channel 211. When the steam is discharged from the steam outlet channel 222, it impacts the valve cover 30 and is blocked by the valve cover 30, so it is temporarily stored in the connecting cavity 221. Then, it is dispersed from the connecting cavity 221 to each steam outlet channel 222 for discharge. Since there is an extension port 23 on the edge of the steam outlet section 22, the steam does not directly impact the steam when it flows out of the steam channel, but gradually flows out along the extension port 23. Since the extension port 23 has a certain extension length along the circumference of the steam outlet section 22, it can increase the contact area between the steam and the food, so that the food is heated more evenly, thereby ensuring the taste of the food.

[0027] Understandably, since the outlet of the steam outlet channel 222 faces the edge of the steam outlet section 22, in order to facilitate the setting of the extension port 23, the width of the extension port 23 gradually decreases in the direction away from the corresponding connected steam outlet channel 222 along the circumference of the steam outlet section 22, so that the sidewall of the extension port 23 is set in a way that is relatively radially inclined, so as to have a guiding effect and guide the steam to the food.

[0028] Further, please refer to Figure 5 and Figure 6 To enhance the impact on food, each steam outlet channel 222 extends in a spiral manner, with the extension opening 23 located in the spiral direction of the steam outlet channel 222. Thus, when steam exits from the steam outlet channel 222, compared to a steam outlet channel 222 directly arranged radially, the steam is blocked by the side wall of the steam outlet channel 222, which slows down the flow rate before gradually exiting from the extension opening 23. This allows for a longer contact time with the food, improving the cooking effect. Furthermore, by arranging the steam outlet channel 222 in a spiral manner, when rinsing the steam outlet structure 20, water flows into the steam outlet channel 222 in a spiral manner through the connecting cavity 221, increasing the contact area with the steam outlet channel 222 and improving the cleaning effect on the steam outlet structure 20.

[0029] In one embodiment of this utility model, when setting the extension port 23, the range of the central angle corresponding to the extension arc length of the extension port 23 along the circumference of the steam outlet portion 22 is 10° < θ < 30°. In this way, by setting the central angle, the extension port 23 has a certain extension arc length, thereby ensuring the amount of contact with food and ensuring the contact area with food; at the same time, it also prevents the extension length from being too long. Since water flow is also in contact with the extension port 23, if the extension port 23 is set too long, the steam will lose its flow power under the resistance of the water body 300. Therefore, setting the range of the central angle corresponding to the extension length in the range of 10° < θ < 30° ensures the effect of steam dissipation and also facilitates the opening and forming of the extension port 23.

[0030] For example, the central angle θ corresponding to the extended arc length can be set to values ​​such as 10°, 15°, 20°, 25° or 30° as needed, and is not limited here.

[0031] Understandably, the steam inlet passage 211 has a steam inlet 212 and a steam outlet 213. The steam inlet 212 is connected to an external steam generator, and the steam outlet 213 is connected to the connecting cavity 221 so that steam can be discharged into the connecting cavity 221.

[0032] Please see Figure 2 , Figure 4 as well as Figure 7In one embodiment of this utility model, since the steam outlet section 22 is immersed in water 300, in order to prevent water 300 from flowing back into the steam outlet structure 20, the steam valve 100 of this embodiment... The first sealing structure 40 is movably installed at the steam outlet 213. It can open the steam outlet 213 under the impact pressure of steam and seal it when the impact pressure disappears. Thus, when steam is introduced from the steam inlet channel 211, the steam has a certain impact pressure, applying an upward impact force to the first sealing structure 40, causing it to open the steam outlet 213, allowing steam to escape. When no steam is introduced into the steam inlet channel 211, the first sealing structure 40 is not subjected to impact force and can be inserted into the steam outlet 213, contacting the bottom wall of the connecting cavity 221 of the steam outlet 213, i.e., covering the top of the steam outlet 213, or inserted into the steam inlet channel 211, to seal the steam outlet 213 and prevent water from flowing from the steam outlet 213 into the steam inlet channel 211, thus preventing backflow.

[0033] In one embodiment, for example, the first sealing structure 40 can be configured to include a sealing element and a spring. For example, the sealing element includes a columnar insertion part and an umbrella-shaped cover part. The outer diameter of the cover part is larger than the outer diameter of the insertion part. The spring is sleeved on the insertion part. The insertion part is movably disposed in the steam outlet 213. When steam flows through, under the impact force of the steam, the cover part is pushed away from the bottom wall of the communicating cavity 221, thereby opening the steam outlet 213. At the same time, the spring is stretched to generate a retraction force. When the impact force of the steam disappears, the sealing element can be pulled back to its original position under the action of the spring force. At this time, the insertion part slides back to its original position relative to the steam outlet 213, and the cover part covers the steam outlet 213, thereby sealing the steam outlet 213.

[0034] Specifically, please refer to Figure 4 and Figure 7 The diagram below shows the structure of the first sealing structure 40 according to an embodiment of the present invention. The steam outlet 213 includes an installation port 2131 and a steam outlet port 2132. The first sealing structure 40 includes a connecting section 41 and a covering section 42. The connecting section 41 is installed on the installation port 2131. The outer diameter of the covering section 42 is larger than the outer diameter of the connecting section 41 and is movably covered on the steam outlet port 2132 for opening or sealing the steam outlet port 2132. That is, the first sealing structure 40 is installed on the installation port 2131 by the connecting section 41, and the steam outlet port 2132 is opened or closed by the movement of the covering section 42.

[0035] Specifically, in this embodiment, the mounting port 2131 and the steam inlet channel 211 are arranged coaxially, and multiple steam outlet ports 2132 are provided. The multiple steam outlet ports 2132 are arranged circumferentially along the steam inlet channel 211. By providing multiple steam outlet ports 2132, a larger steam outlet area is achieved to ensure the steam output.

[0036] Furthermore, when the first sealing structure 40 is installed in the mounting port 2131, the mounting port 2131 is conical, and the diameter of the mounting port 2131 gradually decreases in the direction away from the steam outlet portion 22; the connecting section 41 includes a locking head 411 and a supporting head 412, with the supporting head 412 and the covering section 42 located at both ends of the locking head 411. The outer diameter of the supporting head 412 is larger than the outer diameter of the locking head 411, and the locking head 411 is locked in the mounting port 2131. Thus, the diameter gradually decreases. The gradually decreasing mounting opening 2131 not only guides the installation of the connecting section 41, but also allows the smaller inner diameter of this section to be interference-fitted with the locking head 411, so that the locking head 411 is clamped between the cover section 42 and the supporting head 412. The side wall of the supporting head 412 facing the locking head 411 abuts against the side wall of the steam inlet passage 211, thereby clamping the locking head 411 in the mounting opening 2131, thus realizing the installation of the entire first sealing structure 40.

[0037] Understandably, the first sealing structure 40 in this embodiment can be made of non-toxic materials such as silicone and materials with certain flexible properties, so as to avoid causing physical harm to the user after contact with water 300 and steam. Since the silicone pad has flexible properties, it can also deform the cover section 42 under the impact pressure of steam, thereby opening the steam outlet 2132. When the steam force is lost, it can restore its original shape under the action of its own elastic properties and the pressure of water pressure to cover the bottom wall of the connecting cavity 221, that is, cover the top wall of the steam outlet section 22, thereby achieving the sealing of the steam outlet 2132.

[0038] Specifically, when installing the first sealing structure 40 into the mounting port 2131, the holding head 412 needs to be pulled from the larger diameter side of the mounting port 2131 to the smaller diameter side to lock the locking head 411 into the mounting port 2131. Understandably, in order to facilitate the installation of the entire first sealing structure 40, the first sealing structure 40 may also include a force-applying section 43, which is connected to the holding head 412 and has a certain extension length, so that the claw or hand can pull the force-applying section 43 to pull the locking head 411 into the mounting port 2131.

[0039] Understandably, the locking head 411 can be set in a cylindrical shape or a conical shape, both of which can achieve locking within the mounting port 2131.

[0040] Please see Figure 2 and Figure 4 In one embodiment of this utility model, since the steam valve 100 is connected to the heating kettle body 220, when the heating kettle body 220 is lifted away from the steam generating base 210, in order to prevent the water vapor remaining in the steam channel from being ejected from the steam inlet channel 211 and causing harm to the user, the steam valve 100 also includes a second sealing structure 50. The second sealing structure 50 is movably provided at the steam inlet 212 of the steam inlet channel 211. It is used to open the steam inlet channel 211 when receiving the lifting force of the external structure, and to cover the steam inlet 212 when the lifting force is lost. In this way, when the heating kettle body 220 is lifted away from the steam generating base 210, the second sealing structure 50 seals the steam inlet, so that the steam inlet 212 can be in a closed state, preventing steam or liquefied hot water from being ejected and harming the user; only when the heating kettle body 220 is placed on the steam generating base 210, due to the upward lifting force, the second sealing structure 50 opens the steam inlet.

[0041] In one embodiment, for example, the second sealing structure 50 is a sealing plug and is provided with a guide post. The guide post is slidably disposed relative to the groove provided on the side wall of the steam inlet channel 211. When subjected to a lifting force, it slides along the groove to open the steam inlet 212. When the lifting force is lost, it can be held against the side wall of the steam inlet 212 by its own gravity or water pressure.

[0042] Specifically, the second sealing structure 50 in this embodiment includes an elastic element 51 and a second sealing element 52. The two ends of the elastic element 51 abut against the steam outlet portion 22 and the second sealing element 52, respectively, to apply an elastic force to the second sealing element 52. The second sealing element 52 is used to receive the lifting force. Thus, when receiving the lifting force from the external structure, the second sealing element 52 presses the elastic element 51, causing the elastic element 51 to be compressed. At the same time, the second sealing element 52 opens the steam inlet 212, allowing steam to enter the steam inlet channel 211 through the steam inlet 212. When the second sealing element 52 loses the lifting force, under the action of the elastic force of the elastic element 51, the second sealing element 52 abuts against the side wall of the steam inlet 212, thereby sealing the steam inlet 212.

[0043] In this embodiment, the second sealing element 52 is a spherical sealing element, which allows for a larger contact area with the sidewall of the steam inlet 212 to ensure a sealing effect. The elastic element 51 can be a spring or a multi-fold spring structure, and is not limited thereto.

[0044] Please see Figure 2 and Figure 4In one embodiment of this utility model, since both the steam outlet structure 20 and the valve seat 10 are made of metal, the steam valve 100 also includes a plastic part 60 to ensure the sealing effect. The plastic part 60 is located at the air inlet end of the steam guide part 21 and is connected between the valve seat 10 and the steam guide part 21. It has a connecting channel that communicates with the steam inlet channel 211 and cooperates with the second sealing member 52 to open or close the steam inlet 212. That is, by setting the flexible plastic part 60 to cooperate with the second sealing member 52, the sealing performance when the second sealing member 52 is cooperated is ensured. In addition, the plastic part 60 is also connected between the steam guide part 21 and the valve seat 10 to ensure the sealing performance between the connection between the steam outlet structure 20 and the valve seat 10.

[0045] Furthermore, when the entire steam outlet section 22 and the valve seat 10 are installed together, the inner wall of the valve seat 10 is provided with an internal thread 11, and the outer wall of the steam guide section 21 is provided with an external thread 224. Through the connection of the internal thread 11 and the external thread 224, the steam outlet structure 20 is installed on the valve seat 10.

[0046] The plastic part 60 can be made of silicone to ensure safety during use. The plastic part 60 includes a support block 61, a plug ring 62 on the support block 61, and a support ring 63 on the plug ring 62. The two sides of the support block 61 respectively abut against the valve seat 10 and the steam guide portion 21 to achieve a seal between them. The plug ring 62 is inserted into the inner wall of the steam guide portion 21 to install the plastic part 60, ensuring sufficient contact area with the steam guide portion 21. The support ring 63 is used to cooperate with the spherical second seal 52. For example, the support ring 63 can have a hemispherical receiving portion that matches the shape of the second seal 52 to partially accommodate the second seal 52, thereby ensuring a tight seal.

[0047] Furthermore, the steam valve 100 needs to be installed inside the external structure. The steam valve 100 also includes a sealing ring 70. The outer wall of the valve seat 10 is provided with a groove 12. The sealing ring 70 is sleeved on the outer wall of the valve seat 10 and is located in the groove 12 to abut against the inner wall of the cavity of the external structure to achieve a seal.

[0048] Please refer to Figure 8 for a reference diagram showing the usage state when the steam valve 100 is installed on the heating kettle body 220.

[0049] The steam valve 100 described above, by providing a first sealing structure 40 at the steam outlet 213, can seal the steam outlet 213 when steam is not needed, thus preventing water backflow; by providing a second sealing structure 50, it can seal the steam inlet 212 when the heating kettle body 220 is lifted away from the steam generating base 210, thus preventing steam or water 300 from spraying out of the steam inlet 212 and harming the user.

[0050] Please see Figure 9 In the second embodiment, the present invention also provides a heating device 200, including a steam generating base 210, a heating kettle body 220 and the aforementioned steam valve 100.

[0051] The steam generating base 210 is used to generate steam. The heating kettle body 220 is detachably installed on the steam generating base 210. When the user heats food, the steam valve 100 is installed on the bottom of the heating kettle body 220 and can be connected to the steam generating base 210 to introduce steam into the heating kettle body 220.

[0052] The heating device 200 described above has an extension port 23 on the edge of the steam outlet 22 when the steam valve 100 located at the bottom of the heating pot body 220 is vented, which increases the contact area between the steam and the food when the steam flows out, thus ensuring the cooking taste of the food.

[0053] In some embodiments, when opening the second sealing structure 50, a lifting column can be provided on the steam generating base 210. The lifting column has a hollow channel. When the spherical second sealing member 52 is pushed away from the plastic part 60, steam flows from the lifting column into the steam inlet channel 211.

[0054] In this embodiment, the heating device 200 can be used to cook food. For example, the heating pot 220 is a health pot. After food and water are placed in the heating pot 220, the food can be cooked.

[0055] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A steam valve (100), characterized in that, include: Valve seat (10); The steam outlet structure (20) includes a steam guide section (21) and a steam outlet section (22). The steam guide section (21) is connected to the valve seat (10) and has a steam inlet channel (211). The steam outlet section (22) is provided with a connecting cavity (221) and a steam outlet channel (222). The connecting cavity (221) is connected to the steam inlet channel (211) and the steam outlet channel (222) respectively. The steam outlet channel (222) includes multiple channels, and the multiple steam outlet channels (222) are distributed circumferentially along the connecting cavity (221). The edge of the steam outlet section (22) is provided with multiple extension ports (23). One extension port (23) is connected to the outlet (223) of one steam outlet channel (222). Each extension port (23) extends circumferentially towards the steam outlet section (22). A valve cover (30) is provided on the outside of the steam outlet (22) and a discharge port (31) is provided corresponding to the extension port (23).

2. The steam valve (100) according to claim 1, characterized in that, Each of the steam outlet channels (222) extends in a spiral manner, and the extension port (23) is located in the spiral direction of the steam outlet channel (222).

3. The steam valve (100) according to claim 1 or 2, characterized in that, Along the circumference of the steam outlet portion (22), the range of the central angle corresponding to the extension arc length of the extension port (23) is 10° < θ < 30°.

4. The steam valve (100) according to claim 1 or 2, characterized in that, The steam inlet passage (211) has a steam outlet (213) that connects to the connecting cavity (221); The steam valve (100) further includes a first sealing structure (40), which is movably installed at the steam outlet (213), and can open the steam outlet (213) under the impact pressure of steam, and can seal the steam outlet (213) when the impact pressure of steam disappears.

5. The steam valve (100) according to claim 4, characterized in that, The steam outlet (213) includes an installation sub-port (2131) and a steam outlet sub-port (2132); The first sealing structure (40) includes a connecting section (41) and a covering section (42). The connecting section (41) is installed on the mounting port (2131). The outer diameter of the covering section (42) is larger than the outer diameter of the connecting section (41), and it is movably covered on the steam outlet port (2132) for opening or sealing the steam outlet port (2132).

6. The steam valve (100) according to claim 5, characterized in that, The mounting port (2131) is conical, and the diameter of the mounting port (2131) gradually decreases in the direction away from the steam outlet (22); The connecting section (41) includes a locking head (411) and a supporting head (412). The supporting head (412) and the covering section (42) are located at both ends of the locking head (411). The outer diameter of the supporting head (412) is larger than the outer diameter of the locking head (411). The locking head (411) is locked in the mounting port (2131).

7. The steam valve (100) according to claim 1 or 2, characterized in that, The steam valve (100) further includes a second sealing structure (50), which is movably disposed at the steam inlet (212) of the steam inlet channel (211) for opening the steam inlet channel (211) when receiving the lifting force of the external structure, and for sealing the steam inlet (212) when the lifting force is lost.

8. The steam valve (100) according to claim 7, characterized in that, The second sealing structure (50) includes an elastic element (51) and a second sealing element (52). The two ends of the elastic element (51) abut against the steam outlet portion (22) and the second sealing element (52) respectively, and are used to apply an elastic force to the second sealing element (52). The second sealing element (52) is used to receive the lifting force.

9. The steam valve (100) according to claim 8, characterized in that, The steam valve (100) also includes a plastic part (60), which is located at the air inlet end of the steam guide part (21) and connected between the valve seat (10) and the steam guide part (21). It has a communication channel connected to the steam inlet channel (211) and cooperates with the second sealing member (52) to open or close the steam inlet (212).

10. A heating device (200), characterized in that, include: Steam generator base (210); The heating kettle body (220) is detachably mounted on the steam generating base (210); The steam valve (100) as described in any one of claims 1-9 is installed at the bottom of the heating kettle body (220) and is connected to the steam generating base (210) to introduce steam into the heating kettle body (220).

Images