Siphon heat humidifier
By designing a siphon-type humidifier, which utilizes localized heating and siphon circulation, the problems of slow steam output and limited applicable space in existing humidifiers are solved, achieving rapid steam output and preventing water leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SANHAO ELECTRIC (FOSHAN) CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-02
AI Technical Summary
Existing hot humidifiers suffer from slow steam output speed, limited steam volume, and small applicable space. Furthermore, localized boiling humidifiers are prone to bacterial growth.
The humidifier adopts a siphon heating design. By setting the heating element at the bottom of the main assembly and the steam inlet of the top cover assembly, a local heating zone is formed by the guide rod and heating cover. Combined with baffles and siphon circulation, rapid steam output is achieved, and the back plug prevents water leakage due to tilting.
It achieves rapid steam output, is suitable for high-power operation with a full kettle of water, reduces heating power and extends water supply time, while preventing leakage.
Smart Images

Figure CN224316326U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of humidifier technology, and in particular to a siphon heating humidifier. Background Technology
[0002] Existing thermal humidifiers include full-boiling thermal humidifiers and partial-boiling thermal humidifiers.
[0003] When using a full-boiling humidifier, because all the water inside the humidifier needs to be heated, the water in the tank basically boils and starts to emit steam within 30 to 40 minutes of being powered on. This type of humidifier not only consumes a lot of electricity, but also outputs steam slowly, and the amount of steam is limited by the heating power of the heating element. As for partial-boiling humidifiers, although they output steam quickly, the amount of steam is small, making them only suitable for use in small spaces. Moreover, if stored in the cold water area for a long time, they are prone to deterioration and bacterial growth.
[0004] Therefore, based on the above problems, a siphon heating humidifier was invented to solve the aforementioned technical problems. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a siphon heating humidifier that solves the technical problems of slow output steaming speed, suitability for full pot water volume and high power operation of existing humidifiers.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] A siphonic humidifier includes a top cover assembly and a siphon assembly mounted on a main body assembly. A heating element is disposed at the bottom of the main body assembly. The top cover assembly includes an inner steel cover and a steam cover, with a steam inlet and a steam outlet respectively provided on the inner steel cover and the steam cover. The siphon assembly includes a guide rod, a steam box mounted on the guide rod, and a heating cover. The steam box has a water outlet, and the top of the steam box elastically presses against the end face of the inner steel cover to form a transition area, which communicates with the steam inlet. The heating cover presses against the bottom end face of the main body assembly corresponding to the heating element to form a heating area, with a water inlet on the heating cover. The heating area communicates with the transition area through the guide rod.
[0008] In this example, preferably, the bottom of the guide rod is provided with a skirt, and a baffle is provided between the skirt and the heating cover. The baffle is movably fitted on the guide rod, and the baffle intermittently closes the water inlet hole.
[0009] In this example, preferably, the upper part of the guide rod is provided with a flange, and a spring is fitted on the guide rod. The bottom of the spring abuts against the flange, and the other end of the spring abuts against the end face of the steam box.
[0010] In this example, preferably, a steam cap is installed at the top of the guide rod, the steam cap is pressed against the inner steel cover, and the steam cap is arc-shaped. An opening groove is provided on the outer edge of the top of the guide rod, so that the guide rod is connected to the transition zone through the opening groove.
[0011] In this example, preferably, the center of the inner steel cover is recessed inward to form a positioning groove that fits the top of the steam cap. The positioning groove is provided with a through hole, and the steam discharge hole is provided on the inner steel cover outside the positioning groove.
[0012] In this example, preferably, the upper cover assembly includes an upper cover and a lower cover, the upper cover is installed on the top of the lower cover to form a second steam buffer zone, and the inner steel cover is assembled at the bottom of the lower cover to form a first steam buffer zone.
[0013] In this example, preferably, the end face of the lower cover near the inner steel cover extends downward to form a mounting groove. The inner side of the mounting groove is provided with a stepped surface. A back plug seat is installed in the mounting groove. The back plug seat is provided with a control hole and a back plug valve is installed in the back plug seat. An air inlet is provided on the lower cover corresponding to the back plug seat.
[0014] In this example, preferably, the back plug seat is conical, and the back plug valve is conical and its movement is limited within the back plug seat to control the opening and closing of the control hole.
[0015] In this example, preferably, the steam cover is installed on the upper cover corresponding to the second steam buffer zone, and the steam cover is provided with a steam discharge hole.
[0016] In this example, preferably, the main assembly includes an outer shell and an inner liner, the inner liner is assembled inside the outer shell to form an installation cavity, the heating element is installed at the bottom, and a control board is installed inside the installation cavity. An operation panel is provided on the outer shell corresponding to the control board.
[0017] In this example, preferably, the bottom of the inner liner is provided with a snap-fit groove, and the bottom of the heating cover is bent outward to form a connecting edge, which is adapted to the snap-fit groove.
[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:
[0019] First, a siphon assembly is used. The heating cover presses against the bottom surface of the main assembly corresponding to the heating tube to form a heating zone. Water in the main assembly can be introduced into the heating zone for local heating through the water inlet. The generated steam passes through the transition zone through the guide rod and is discharged through the steam cover. It uses local heating, outputs steam quickly, and is suitable for full pots and high-power operation.
[0020] Secondly, by installing baffles on the heating hood and guide rod, when the machine is powered on, the water in the heating zone is rapidly heated. As the water temperature rises and the steam pressure gradually increases, the baffles are pushed by the steam pressure to tightly adhere to the top surface of the heating hood, sealing the water inlet. The water and steam heated to boiling rise from the bottom through the guide rod and steam cap, and are finally sprayed into the steam box. The boiling water generates a large amount of steam during the movement. When the boiling water and steam in the heating hood are discharged through the guide rod, the pressure inside the heating hood decreases. The baffles are pushed downward by their own weight and the gravity of the water in the inner tank, and the water in the inner tank re-enters through the heating hood holes to be heated to boiling. This automatic circulation achieves siphon-type dynamic heating and humidification, ensuring a full kettle of water while still providing heating, reducing heating power and extending the water supply time.
[0021] Third, a conical back-blocking seat is installed on the lower cover. A control hole is set on the back-blocking seat, and a back-blocking valve is installed inside it. When subjected to gravity, the back-blocking valve moves inside and presses against the surface of the control hole to achieve isolation between the space inside the main assembly and the space between the steam cover, so as to prevent the main assembly from tilting and leaking water. Attached Figure Description
[0022] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.
[0023] Figure 1 This is a 3D structural diagram of a siphon heating humidifier;
[0024] Figure 2 This is a 3D structural diagram of the top cover assembly;
[0025] Figure 3 It is a three-dimensional structural diagram of the main assembly;
[0026] Figure 4 This is another 3D schematic diagram of the top cover assembly.
[0027] Figure 5 This is a top view of a siphon heating humidifier;
[0028] Figure 6 This is a 3D structural diagram of the siphon assembly;
[0029] Figure 7 This is an exploded view of the siphon assembly;
[0030] Figure 8 yes Figure 5 AA sectional view.
[0031] Brief explanation of the reference numerals in the attached figures:
[0032] 10. Main assembly; 11. Outer shell; 12. Inner shell; 13. Heating element; 14. Mounting cavity; 15. Control board; 16. Snap-fit groove;
[0033] 20. Top cover assembly; 21. Top cover; 211. Steam cover; 212. Steam exhaust port; 22. Inner steel cover; 221. Positioning groove; 222. Through hole; 223. Steam inlet port; 23. Bottom cover; 231. Mounting groove; 24. Back plug seat; 241. Back plug valve; 242. Control hole; 231. Air inlet port;
[0034] 30. Siphon assembly; 31. Guide rod; 311. Flange; 312. Opening slot; 313. Spring; 314. Steam cap; 33. Steam box; 331. Water outlet; 32. Heating cover; 321. Connecting flange; 322. Water inlet; 34. Baffle plate;
[0035] 40. Steam buffer zone 2; 50. Steam buffer zone 1; 60. Transition zone; 70. Heating zone. Detailed Implementation
[0036] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.
[0037] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.
[0038] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".
[0039] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0040] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of the invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.
[0041] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0043] Please see Figure 1 and Figure 2 , Figure 1 A schematic diagram of a siphon heating humidifier is presented. Figure 2 A three-dimensional structural diagram of the top cover assembly is presented. Figure 3 A schematic diagram of the main assembly after removing the top cover assembly is presented; Figure 4 This presents another three-dimensional schematic diagram of the bottom structure of the top cover assembly. Figure 5 A top view of a siphon heating humidifier is presented; Figure 6 A three-dimensional structural diagram of the siphon assembly is presented to illustrate the installation status of the siphon assembly; Figure 7 This is an exploded view of the siphon assembly, intended to illustrate its internal structure; Figure 8 yes Figure 5 The AA cross-sectional view is intended to show the flow path of water and steam inside the siphon humidifier.
[0044] Please see Figure 1 and combined Figure 8 As shown, a siphon heating humidifier of the present invention includes a main body assembly 10, a siphon assembly 30, and a top cover assembly 20. The main body assembly 10 has a water-holding cavity for holding water and provides an installation base for the top cover assembly 20 and the siphon assembly 30. The top cover assembly 20 is detachable or hinged to the main body assembly 10 to form a sealed cavity (not shown). The siphon assembly 30 is installed between the top cover assembly 20 and the main body assembly 10 to realize siphon local heating and steam output from bottom to top.
[0045] Specifically, the main assembly 10 of the present invention includes an outer shell 11 and an inner liner 12. The inner liner 12 is assembled inside the outer shell 11 to form a mounting cavity 14. The heating element 13 is installed at the bottom of the inner liner 12, and a control board 15 is installed inside the mounting cavity 14. An operation panel (not shown) is provided on the outer shell 11 corresponding to the control board 15. The end face of the bottom of the inner liner 12 that contacts the heating element 13 is made of a high thermal conductivity plate, and the control board 15 is connected to the heating element 13 and controlled by the operation panel (not shown). The control board 15 can be adjusted through the operation panel (not shown) to control the opening and closing of the heating element 13.
[0046] To ensure water temperature control, the present invention also includes a temperature sensor (not shown) installed in the mounting cavity 14 at the bottom of the inner tank 12. The temperature sensor (not shown) is controlled by the control board 15 to monitor the internal temperature.
[0047] The top cover assembly 20 of the present invention includes an inner steel cover 22 and a steam cover 211. The inner steel cover 22 is provided with a steam inlet hole 223, and the steam cover 211 is provided with a steam outlet hole 212. The inner steel cover 22 covers the top of the inner liner 12, while the steam cover 211 is located on the outer side.
[0048] The siphon assembly 30 of the present invention includes a guide rod 31, a U-shaped steam box 33, and a heating cover 32. The steam box 33 is provided with a water outlet 331. The steam box 33 and the heating cover 32 are installed at the top and bottom of the guide rod 31, and the guide rod 31 is supported between the inner steel cover 22 and the bottom of the inner liner 12 of the main body assembly 10, so that the edge of the steam box 33 elastically presses against the end face of the inner steel cover 22 to form a transition area 60. The transition area 60 and the steam inlet hole 2 of the inner steel cover 22 are connected. 23 is connected, and the heating cover 32 is placed on the surface of the inner liner 12 of the main body assembly 10 corresponding to the heating tube 13, and the edge of the heating cover 32 is pressed against the end face of the inner liner 12 to form a heating zone 70. The heating cover 32 is provided with a water inlet hole 322. The heating zone 70 is connected to the space of the inner liner 12 through the water inlet hole 322, and the heating zone 70 is connected to the transition zone 60 through the guide rod 31. The water in the inner liner 12 is divided into two by the heating cover 32 and stored in the two areas.
[0049] In this invention, the bottom of the heating cover 32 is bent outward to form a connecting edge 321, and the bottom of the inner liner 12 is provided with a snap-fit groove 16. The connecting edge 321 is snapped into the snap-fit groove 16 to realize the combination of the heating cover 32 and the inner liner 12, so as to ensure the sealing effect of the heating zone 70.
[0050] Specifically, water is stored in the inner tank 12. Under its own gravity, the water is introduced into the heating zone 70 through the water inlet 322. The operation panel is adjusted to control the operation of the heating tube to heat the water in the heating zone 70. Since there is less water in the heating zone 70, the water can be heated quickly by the heating tube. As the water temperature rises, steam enters the transition zone 60 through the guide rod 31. After passing through the transition zone 60, steam is introduced through the steam inlet hole 223 on the inner steel cover 22 and then discharged through the steam cover 211.
[0051] For a more detailed explanation of the technical solution of this invention, please refer to [link / reference needed]. Figure 6 and Figure 7 As shown, the bottom of the guide rod 31 of the present invention is provided with a skirt, and a baffle 34 is provided between the skirt and the heating cover 32. The baffle 34 is movably mounted on the guide rod 31, and the baffle 34 intermittently closes the water inlet hole 322.
[0052] When the machine is powered on, the heating element is controlled by the control panel to heat the water in the heating hood 32. As the water temperature rises and the steam pressure gradually increases, the water in the baffle 34 moves upward under the action of steam pressure. Under the push of the steam, it sticks tightly to the top surface of the heating hood 32 to seal the water inlet hole. The water heated to boiling and the steam pass through the guide pipe and the transition zone 60 and are finally sprayed into the steam box 33. The boiling water generates a large amount of steam during the movement.
[0053] Most of the steam in the steam box 33 is discharged through the steam inlet hole 223 at the corresponding position of the inner steel cover 22 and then discharged outward through the steam cover 211. A small amount of steam, along with the water in the steam box 33, is discharged into the inner liner 12 through the water outlet hole 331 at the bottom.
[0054] When the boiling water and steam in the heating zone 70 are discharged through the guide pipe, the pressure in the heating hood 32 decreases. The baffle 34 is pushed downward by its own weight and the gravity of the water in the inner tank 12. The water in the inner tank 12 enters again through the holes of the heating hood 32 and is heated to boil. This process is automatically circulated to achieve siphon-type dynamic heat humidification.
[0055] In this invention, the upper part of the guide rod 31 is provided with a flange 311, and a spring 313 is fitted on the guide rod 31. The bottom of the spring 313 presses against the flange 311, and the other end of the spring 313 presses against the end face of the steam box 33. Through the design of the spring 313, excessive water accumulation in the steam box 33 is avoided.
[0056] Specifically, the top of the guide rod 31 of the present invention is equipped with a steam cap 314, which presses against the inner steel cover. The steam cap 314 is arc-shaped. The steam cap 314 can be installed on the top of the guide rod 31 by plugging it in, or the top of the guide rod 31 can be bent outward to form a support edge so as to be positioned on the steam cap 314, thereby achieving positioning and installation.
[0057] The guide rod 31 has an opening groove 312 on its top outer edge surface, which allows the guide rod 31 to connect with the transition zone 60 through the opening groove 312.
[0058] The inner steel cover 22 of the present invention has an inwardly recessed center portion forming a positioning groove 221 that fits the top of the steam cap 314. A through hole 222 is provided in the positioning groove 221, and a steam discharge hole 212 is provided on the inner steel cover 22 outside the positioning groove 221. When the siphon assembly 30 is installed in the main body assembly 10, the top of the steam cap 314 is limited in the positioning groove 221. At this time, the steam cap 314 closes the through hole 222. The steam in the guide rod 31 is mainly introduced through the opening groove 312 and then introduced through the steam discharge hole 212 into the upper cover 21 and the steam cover 211 for discharge.
[0059] When the steam in the heating zone 70 moves upward to the top of the guide rod 31, the steam moves to both sides due to the guiding effect of the steam cap 314, and the water in the steam can be trapped in the steam box 33 and discharged through the water outlet 331.
[0060] Please continue reading. Figure 2 , Figure 3 and Figure 4 As shown, the upper cover assembly 20 of the present invention includes an upper cover 21 and a lower cover 23. The upper cover 21 is installed on the top of the lower cover 23 to form a second steam buffer zone 40, and the inner steel cover 22 is assembled at the bottom of the lower cover 23 to form a first steam buffer zone 50.
[0061] Specifically, such as Figure 8 As shown, the present invention extends downward from the end face of the lower cover 23 near the inner steel cover 22 to form an installation groove 231. The inner side of the installation groove 231 is provided with a stepped surface. A back-blocking seat 24 is installed in the installation groove 231. A control hole 242 is provided on the back-blocking seat 24. A back-blocking valve 241 is installed in the back-blocking seat 24. An air inlet hole 231 is provided on the lower cover 23 corresponding to the back-blocking seat 24. The back-blocking seat 24 is conical in shape. The back-blocking valve 241 is conical and its movement is limited within the back-blocking seat 24 to control the opening and closing of the control hole 242.
[0062] When the main assembly 10 tilts due to external force, the back plug valve 241 will press against the control hole 242 due to gravity, so that the control hole 242 is closed, thereby isolating the water flow and preventing the problem of water leakage when tilted.
[0063] Furthermore, the present invention has a steam cover 211 installed on the upper cover 21 corresponding to the steam buffer zone 40, and the steam cover 211 is provided with a steam discharge hole 212.
[0064] To further illustrate the working principle of the present invention, the operation process of the present invention will be described in more detail below.
[0065] Water is stored in the inner tank 12. Due to the gravity of the water, the baffle 34 moves downward. At this time, the water in the inner tank 12 is introduced into the heating zone 70 through the water inlet 322. The heating pipe at the bottom of the inner tank 12 rapidly heats the water in the heating zone 70. After the water is heated, it boils and the generated steam increases the air pressure in the heating zone 70, which pushes the baffle 34 to adhere to the top of the steam box 33, causing the water inlet 322 to close. At the same time, the steam moves from bottom to top from the guide rod 31, is introduced into the transition zone 60 through the opening groove 312, and then enters the steam buffer zone 50 through the steam inlet hole 223 on the inner steel cover 22. After that, it enters the steam buffer zone 40 through the control hole 242 on the back plug seat 24, and finally is discharged through the steam outlet hole 212 on the steam cover 211.
[0066] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:
[0067] First, a siphon assembly 30 is used, which forms a heating zone 70 by pressing the heating cover 32 against the bottom surface of the main body assembly 10 corresponding to the heating tube 13. Water in the main body assembly 10 can be introduced into the heating zone 70 for local heating through the water inlet 322. The generated steam passes through the transition zone 60 via the guide rod 31 and is discharged through the steam cover 211. It adopts local heating, outputs steam quickly, and is suitable for full pot water volume and high power operation.
[0068] Secondly, by installing baffles 34 on the heating hood 32 and guide rod 31, when the whole machine is powered on, the water in the heating zone 70 is rapidly heated. As the water temperature rises and the steam pressure gradually increases, the water in the baffles 34 is pushed tightly against the top surface of the heating hood 32 by the steam pressure, sealing the water inlet hole. The water and steam heated to boiling rise from bottom to top through the guide rod 31 and steam cap 314, and are finally sprayed into the steam box 33. The boiling water generates a large amount of steam during the movement. When the boiling water and steam in the heating hood 32 are discharged through the guide rod 31, the pressure in the heating hood 32 decreases. The baffles 34 are pushed downward by their own weight and the gravity of the water in the inner tank 12. The water in the inner tank 12 enters again through the holes of the heating hood 32 and is heated to boiling. This automatic circulation realizes siphon-type dynamic heat humidification, so as to achieve a full pot of water and meet the need for heating, reduce the heating power, and extend the water supply time.
[0069] Third, a conical back-blocking seat 24 is installed on the lower cover 23. A control hole 242 is provided on the back-blocking seat 24, and a back-blocking valve 241 is installed inside it. When subjected to gravity, the back-blocking valve 241 moves inside and presses against the surface of the control hole 242 to achieve isolation between the space inside the main body assembly 10 and the space between the steam cover 211, so as to prevent the main body assembly 10 from tilting and leaking water.
[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0071] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A siphon heating humidifier, characterized in that, The system includes a top cover assembly and a siphon assembly mounted on a main body assembly. A heating element is located at the bottom of the main body assembly. The top cover assembly includes an inner steel cover and a steam cover, with a steam inlet and a steam outlet respectively. The siphon assembly includes a guide rod, a steam box mounted on the guide rod, and a heating shroud. The steam box has a water outlet, and its top is elastically pressed against the end face of the inner steel cover to form a transition zone. The transition zone communicates with the steam inlet. The heating shroud presses against the bottom end face of the main body assembly corresponding to the heating element to form a heating zone. The heating shroud has a water inlet, and the heating zone communicates with the transition zone via the guide rod.
2. The siphon heating humidifier as described in claim 1, characterized in that, The bottom of the guide rod is provided with a skirt, and a baffle is provided between the skirt and the heating cover. The baffle is movably fitted on the guide rod and intermittently closes the water inlet hole.
3. A siphonic humidifier as described in claim 1, characterized in that, The upper part of the guide rod is provided with a flange, and a spring is fitted on the guide rod. The bottom of the spring abuts against the flange, and the other end of the spring abuts against the end face of the steam box.
4. A siphonic humidifier as described in claim 3, characterized in that, A steam cap is installed at the top of the guide rod, which presses against the inner steel cover. The steam cap is arc-shaped and has an opening groove on the outer edge of the top of the guide rod, so that the guide rod is connected to the transition area through the opening groove.
5. A siphonic humidifier as described in claim 4, characterized in that, The center of the inner steel cover is recessed inward to form a positioning groove that fits the top of the steam cap. A through hole is provided in the positioning groove, and the steam discharge hole is provided on the inner steel cover outside the positioning groove.
6. A siphonic humidifier as described in claim 1, characterized in that, The upper cover assembly also includes an upper cover and a lower cover. The upper cover is installed on top of the lower cover to form a second steam buffer zone, and the inner steel cover is assembled at the bottom of the lower cover to form a first steam buffer zone.
7. A siphonic humidifier as described in claim 6, characterized in that, The end face of the lower cover near the inner steel cover extends downward to form an installation groove. The inner side of the installation groove is provided with a stepped surface. A back plug seat is installed in the installation groove. The back plug seat is provided with a control hole and a back plug valve is installed in the back plug seat. An air inlet is provided on the lower cover corresponding to the back plug seat.
8. A siphonic humidifier as described in claim 7, characterized in that, The back-blocking seat is conical in shape, and the back-blocking valve is conical and its movement is limited within the back-blocking seat to control the opening and closing of the control hole.
9. A siphonic humidifier as described in claim 1, characterized in that, The main assembly includes an outer shell and an inner liner. The inner liner is assembled inside the outer shell to form an installation cavity. The heating element is installed at the bottom, and a control board is installed inside the installation cavity. An operation panel is provided on the outer shell corresponding to the control board.
10. A siphonic humidifier as described in claim 9, characterized in that, The bottom of the inner liner is provided with a snap-fit groove, and the bottom of the heating cover is bent outward to form a connecting edge, which is adapted to the snap-fit groove.