Humidification tank of ventilator

Abstract

The present application discloses a humidification tank of a ventilator, comprising a tank body and an internal chamber. The internal chamber is configured to be capable of containing a humidification liquid and being communicated with an external air path by means of an airflow inlet and an airflow outlet of the tank body; and an insertion end of the tank body can be inserted into the ventilator. The humidification tank further comprises an intake airflow guide portion having a first end and a second end. The intake airflow guide portion comprises a bent flow guide pipe having at least two bends, such that the first end and the second end are located on two opposite sides; or, the intake airflow guide portion comprises a flow guide pipe which is bent and extends, and the flow guide pipe comprises a first flow channel and a second flow channel. When the humidification tank rotates from a working direction to any direction by an angle of 90° or less, the humidification liquid cannot enter the first flow channel, so that the humidification liquid is prevented from flowing out of the airflow inlet. The bent flow guide pipe enables a flowing path of airflow to be longer and more tortuous, thereby reducing noise generated in the flowing process of airflow, and also lengthening a path for the liquid to flow back to the airflow inlet and thus reducing the risk of back flow.

Description

ventilator humidifier tank

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on July 21, 2023, with application number "202310905161.4" and invention name "A ventilator humidification tank", and the Chinese patent application filed with the Patent Office of China on July 21, 2023, with application number "202310910704.1" and invention name "A ventilator humidification tank", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of medical devices, and specifically relates to a humidifier tank for a ventilator. Background Art

[0003] A ventilator typically includes a blower, whose outlet exchanges air with the user or patient through the breathing tube and mask. Humidified air makes the patient or user feel more comfortable and receptive, so a humidifier has gradually become an essential component of a ventilator.

[0004] The humidification component is usually a humidification tank arranged inside the ventilator, which is equipped with an air duct component and humidification liquid. The airflow blown out by the blower enters the humidification tank through the air duct component and comes into contact with the humidification liquid, making the airflow moist. The moistened air then flows out from the outlet of the humidification tank to the user end to assist the user in breathing.

[0005] With increasing user demand, ventilators are gradually entering homes, and small home ventilators are becoming increasingly popular. However, due to their smaller size and weight, miniaturized ventilators have reduced stability, making them more prone to tipping over. This is especially true when using a ventilator while sleeping. Turning over during sleep can cause the ventilator to tip over, causing the humidifier tank to flip over as well. This can cause the humidifying liquid to flow back into the air duct assembly, and then further back into the blower from the duct inlet, exposing the blower to risks such as short circuits and damage.

[0006] The design of the humidification tank must ensure that it can hold a sufficient amount of humidification liquid to ensure the humidification effect, and it must also ensure that the airflow and the humidification liquid have a sufficiently large contact area.

[0007] Furthermore, the airflow through the duct assembly produces a loud whistling sound, and when the airflow comes into contact with the humidifier liquid, it also disturbs the humidifier liquid and generates noise, making the ventilator noisy during use. Many users choose to wear the ventilator while sleeping, so excessive ventilator noise directly affects the user's sleep quality and user experience.

[0008] Summary of the Invention

[0009] The present application provides a humidifier tank for a ventilator to solve at least one of the above technical problems.

[0010] According to the first aspect of the present application, a ventilator humidification tank is provided, and the technical solution adopted is:

[0011] A ventilator humidifier tank comprises a tank body and an internal chamber, the tank body is provided with an air flow inlet and an air flow outlet, the internal chamber is constructed to accommodate humidification liquid and to be connected to an external air path through the air flow inlet and the air flow outlet; the tank body comprises an insertion end and a gripping end, the insertion end can be inserted into the interior of the ventilator host; the humidifier tank also comprises an air intake guide portion having a first end and a second end, the first end is sealedly connected to the air flow inlet, and the second end is connected to the internal chamber; the air intake guide portion comprises a bent guide tube having at least two bending angles, so that the first end and the second end are located on opposite sides.

[0012] The bent flow guide tube comprises a first section, a second section and a third section which are connected in sequence. The first section and the third section extend along a first direction, and the second section extends in the opposite direction of the first direction.

[0013] The first section, the second section and the third section are arranged side by side and the third section is located higher than the first section and / or the second section.

[0014] Along the first direction, the height of the bottom of the third section gradually decreases.

[0015] The bottom wall of the third section is provided with anti-backflow ribs protruding upward.

[0016] The cross-sectional areas of the first section and the second section, and / or the second section and the third section, vary by less than 10%.

[0017] Along the first direction, the width of the third section gradually increases.

[0018] The air intake guide also includes a rectifying portion arranged at the second end, the inlet of the rectifying portion is connected to the outlet of the air intake guide, the outlet of the rectifying portion is connected to the internal chamber, and the position of the outlet of the rectifying portion is lower than the position of the inlet of the rectifying portion.

[0019] The outlet position of the rectifying portion is lower than the position of the first section.

[0020] The outlet of the rectification portion is configured to allow airflow to enter the internal chamber in a direction different from the first direction.

[0021] A liquid baffle is provided at the lower side of the outlet of the rectifying portion, and the liquid baffle extends toward the first end to below the air inlet guide portion.

[0022] The liquid baffle extends downwardly at an angle to form a flow guiding slope on the surface of the liquid baffle.

[0023] The rectifying portion is provided with a guide rib, which bends and extends to guide the fluid to flow toward the outlet of the rectifying portion.

[0024] The humidification tank further comprises an air outlet guide portion having a third end and a fourth end, wherein the third end is communicated with the internal chamber, and the fourth end is sealedly connected to the air flow outlet.

[0025] The humidifier tank comprises a base and a cover body which can be buckled with each other. The air flow inlet and the air flow outlet are arranged on the cover body and extend toward the internal cavity to form an air flow inlet mounting portion and an air flow outlet mounting portion respectively.

[0026] The air inlet guide portion and the air outlet guide portion are constructed as an integrated structure, and can be plugged and matched with the air flow inlet mounting portion and the air flow outlet mounting portion respectively as a whole.

[0027] The air inlet guide portion or the air outlet guide portion is provided with a positioning structure, and the cover body is provided with a matching structure matching with the positioning structure.

[0028] According to the second aspect of the present application, a ventilator humidification tank is provided, and the technical solution adopted is:

[0029] A ventilator humidifier tank comprises a tank body and an internal chamber, the tank body is provided with an air flow inlet and an air flow outlet, the internal chamber is constructed to accommodate humidification liquid and to be connected to an external air path through the air flow inlet and the air flow outlet; the tank body comprises an insertion end and a gripping end, the insertion end can be inserted into the interior of the ventilator host; the humidifier tank also comprises an air intake guide portion having a first end and a second end, the first end is sealedly connected to the air flow inlet, and the second end is connected to the internal chamber; the air intake guide portion comprises a guide tube with a bent extension, the guide tube comprises a first flow channel and a second flow channel that are connected to each other, and the internal chamber and the guide tube are configured such that when the humidifier tank is rotated no more than 90° in any direction from the working orientation, the humidification liquid cannot enter the first flow channel to prevent the humidification liquid from flowing out of the air flow inlet.

[0030] The air flow inlet is arranged on the front side of the tank body, and the first flow channel and the second flow channel both extend along the front and rear directions of the tank body. When the humidification tank is rotated forward from the working position to no more than 90 degrees, the second end is higher than the liquid level of the humidification liquid.

[0031] A partition plate is provided in the guide tube and is located between the first flow channel and the second flow channel. When the humidification tank is rotated backward from the working position to no more than 90 degrees, the highest point of the partition plate is higher than the liquid level of the humidification liquid.

[0032] The air flow inlet is arranged on the front side of the tank body, and a partition plate is provided in the guide tube. The partition plate is located between the first flow channel and the second flow channel. When the humidification tank is rotated to the left or right direction from the working position to no more than 90°, at least part of the area of ​​the partition plate is higher than the liquid level of the humidification liquid.

[0033] The air intake guide also includes a rectifying portion arranged at the second end, the inlet of the rectifying portion is connected to the outlet of the air intake guide, the outlet of the rectifying portion is connected to the internal chamber, and the position of the rectifying portion outlet is lower than the position of the rectifying portion inlet.

[0034] A liquid baffle is provided at the lower side of the outlet of the rectifying part. When the humidifying tank is located at the working position, the lowermost end of the liquid baffle is higher than the liquid level of the humidifying liquid.

[0035] The liquid baffle extends obliquely downward along the rectifying portion to below the air intake guide portion.

[0036] A guide rib is provided in the rectifying portion, and the guide rib is bent and extended to guide the fluid to flow toward the outlet of the rectifying portion.

[0037] The tank body includes a bottom shell and an upper cover, which cooperate to form an internal chamber. The air inlet guide part is arranged on the upper cover. When the humidification tank is rotated from the working position to 180°, the first end or the second end is higher than the liquid level of the humidification liquid.

[0038] The humidification tank further comprises an air outlet guide portion having a third end and a fourth end, wherein the third end is communicated with the internal chamber, and the fourth end is sealedly connected to the air flow outlet.

[0039] An air inlet is provided at the first end, and a humidification outlet is provided at the fourth end. The air inlet and the humidification outlet face the same side, the air flow inlet and the air inlet are arranged correspondingly, and the air flow outlet and the humidification outlet are arranged correspondingly.

[0040] By adopting the technical solution of the first aspect above, the beneficial effects achieved by this application are as follows:

[0041] 1. When the humidifier tank of the present application is in use, the airflow blown by the blower enters the internal chamber through the air inlet guide portion, where it comes into contact with the humidifying liquid and becomes moistened. The air inlet guide portion includes a curved guide tube with at least two bends, which makes the flow path of the airflow before it comes into contact with the humidifying liquid longer and more tortuous. On the one hand, this reduces the whistling sound generated during the flow of the airflow, and reduces the impact force between the airflow and the inner wall of the curved guide tube, thereby reducing the noise generated by the collision. On the other hand, the tortuous air path also lengthens the path for sound waves to be transmitted, making it difficult for internal noise to be transmitted to the outside, thereby achieving a good noise reduction and silencing effect, and improving the user experience.

[0042] In addition, the humidifying liquid in the tank can only flow back in the direction opposite to the airflow direction through the bent guide tube, and the bent extension of the bent guide tube also extends the path for the liquid to flow back to the airflow inlet, reducing the risk of backflow. Even if part of the liquid flows back into the bent guide tube from the second end, it cannot flow directly to the first end due to the obstruction of the winding structure inside the bent guide tube, which increases the difficulty of liquid flow. In addition, the internal chamber is a large volume of space for holding the humidifying liquid. The number of chambers is single and the structure is simple, without a complex partition structure. This not only saves production and processing costs, but also facilitates user use and greatly reduces the difficulty of operation. The user only needs to fill the tank with humidifying liquid before use.

[0043] 2. As a preferred embodiment of the present application, the curved flow guide tube includes a first section, a second section, and a third section connected in sequence. The first and third sections extend in a first direction, while the second section extends in the opposite direction of the first direction. When air flows from the first section to the second section, the airflow must make a roughly 180° turn at this point because the two sections extend in opposite directions. Similarly, when air flows from the second section to the third section, it also makes a roughly 180° turn. Sound is significantly reduced or eliminated during sharp turns. Therefore, by designing the extension directions of the three sections, the airflow undergoes two sharp turns within the curved flow guide tube, achieving effective noise reduction and silencing. Furthermore, although the three sections extend in different directions, they remain parallel to each other, allowing them to be arranged side by side. This helps reduce the volume of the curved flow guide tube, conserving space within the tank, and thus contributing to the miniaturization of the ventilator, making it more convenient for home use.

[0044] 3. As a preferred embodiment of the present application, the bottom wall of the third section is provided with an upwardly protruding anti-backflow rib. The anti-backflow rib is provided in the third section to form a height difference in the third section. When the humidification liquid flows back along the third section, it needs to pass over the anti-backflow rib. However, under the action of the liquid's own gravity and the resistance of the forward-flowing airflow in the third section, the humidification liquid has difficulty flowing upward and over the anti-backflow rib. As a result, the humidification liquid that flows back into the third section is blocked by the anti-backflow rib and cannot continue to flow back into the second section, and is thus blocked in the third section.

[0045] 4. As a preferred embodiment of the present application, the air inlet guide portion further includes a rectifying portion arranged at the second end of the air inlet guide portion, and a liquid baffle is provided on the lower side of the rectifying portion outlet, and the liquid baffle extends toward the first end to the bottom of the air inlet guide portion. The liquid baffle can block the outlet below the rectifying portion in the vertical direction, reducing the risk of liquid splashing into the rectifying portion and then entering the bent guide tube. At the same time, the liquid baffle can also guide the direction of the airflow when entering the internal chamber, so that the airflow can contact the humidification liquid in a direction parallel to or oblique to the liquid surface, reducing the collision force between the airflow and the humidification liquid, reducing noise, and avoiding the airflow colliding with the humidification liquid perpendicular to the liquid surface, disturbing the liquid and generating noise.

[0046] 5. As a preferred embodiment of the present application, the humidification tank also includes an air outlet guide portion having a third end and a fourth end, and the air inlet guide portion and the air outlet guide portion are constructed as an integral structure, and can be plugged and matched with the air flow inlet mounting portion and the air flow outlet mounting portion as a whole. The air inlet guide portion and the air outlet guide portion are an integral structure, and are plugged and matched with the tank body, so that the two can be installed as a whole inside the tank body or removed from the tank body, so that the air duct assembly in the humidification tank can be installed or removed as an independent module, reducing the difficulty of processing and assembly and improving assembly efficiency. It is also convenient for users to clean the air inlet guide portion and the air outlet guide portion. At the same time, after the air inlet guide portion and the air outlet guide portion are removed, the interior of the tank body is a complete cavity, thereby increasing the volume of the internal chamber, allowing users to put in more humidification liquid and improve humidification efficiency.

[0047] By adopting the technical solution of the second aspect above, the beneficial effects achieved by this application are as follows:

[0048] 1. The humidification tank of the present application is provided with an air intake guide portion. The airflow blown by the blower first enters the air intake guide portion, passes through the air duct inside the air intake guide portion, and then enters the internal chamber to be wetted by the humidification liquid. The present application designs the airflow path inside the air intake guide portion so that it bends and extends to form a first flow channel and a second flow channel, thereby making the counterflow path of the humidification liquid in the guide tube more tortuous, so that when the humidification tank is rotated no more than 90 degrees in any direction from the working orientation, the humidification liquid cannot enter the first flow channel, and thus cannot flow to the first end, that is, the airflow outlet. Especially for small-sized portable home ventilators, even if the user turns over in sleep or uses the machine improperly and causes the machine to fall over, the humidification liquid will not flow back, thereby ensuring the safety and service life of the blower.

[0049] The curved and extended airflow tube also creates a longer and more tortuous path for the airflow before it contacts the humidifying liquid. This reduces the whistling sound produced during airflow and the impact of the airflow on the inner wall of the airflow tube, thereby reducing the noise generated by collisions. Furthermore, the tortuous airflow path lengthens the path for sound waves to travel, making it difficult for internal noise to escape, thus achieving a better noise reduction and enhancing the user experience.

[0050] 2. As a preferred embodiment of the present application, the air inlet guide further includes a rectifying portion disposed at the second end, the inlet of the rectifying portion being in communication with the outlet of the air inlet guide, the outlet of the rectifying portion being in communication with the internal chamber of the humidification tank, and the position of the rectifying portion outlet being lower than the position of the rectifying portion inlet. The airflow flowing out of the outlet of the second flow channel enters the internal chamber after being rectified by the rectifying portion and comes into contact with the humidification liquid. The lower position of the outlet of the rectifying portion places the airflow outlet closer to the liquid surface of the humidification liquid, thereby ensuring that more airflow can come into contact with the humidification liquid to complete humidification, thereby improving the humidification effect and reducing the probability of the airflow directly flowing out of the humidification tank for use by the user without being humidified.

[0051] 3. As a preferred embodiment of the present application, a liquid baffle is provided on the lower side of the outlet of the rectifying portion. When the humidifying tank is in the working position, the lowermost end of the liquid baffle is higher than the liquid level of the humidifying liquid. The liquid baffle can block the outlet below the rectifying portion in the vertical direction, reducing the risk of liquid splashing into the rectifying portion and then entering the guide tube. At the same time, the liquid baffle can also guide the direction of the airflow when entering the internal chamber, so that the airflow can contact the humidifying liquid in a direction parallel to or oblique to the liquid surface, reducing the collision force between the airflow and the humidifying liquid, reducing noise, and preventing the airflow from colliding with the humidifying liquid perpendicular to the liquid surface, disturbing the liquid and generating noise.

[0052] 4. As a preferred embodiment of the present application, the tank body includes a bottom shell and an upper shell, the bottom shell and the upper shell cooperate to form an internal chamber, the air inlet guide portion is arranged on the upper shell, and when the humidification tank is rotated to 180 degrees from the working orientation, the first end or the second end is higher than the liquid level of the humidification liquid. The humidification liquid inside the humidification tank has a unique path to flow to the air flow inlet, and can only flow from the second end of the air inlet guide portion to the first end and then to the air flow inlet through the guide pipe. Therefore, when the humidification tank is turned 180 degrees, the humidification liquid accumulates in the space where the upper shell is located, and the first end or the second end is higher than the liquid level of the humidification liquid, so that the humidification liquid needs to overcome its own gravity to flow upward before it can flow to the first end, thereby greatly increasing the difficulty of backflow and improving the anti-backflow effect.

[0053] 5. As a preferred embodiment of the present application, the humidification tank also includes an air outlet guide having a third end and a fourth end, the third end being communicated with the internal chamber, and the fourth end being sealed and connected to the air flow outlet. The air inlet guide and the air outlet guide are plugged into and matched with the tank body, so that the two can be installed inside the tank body or removed from the tank body, so that the air duct assembly in the humidification tank can be installed or removed as an independent module, reducing the difficulty of processing and assembly and improving assembly efficiency. It is also convenient for users to clean the air inlet guide and the air outlet guide. At the same time, after the air inlet guide and the air outlet guide are removed, the interior of the tank body is a complete cavity, thereby increasing the volume of the internal chamber, allowing users to put in more humidification liquid and improve humidification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0055] FIG1 is a schematic diagram of the internal structure of a humidification tank according to an embodiment of the present application;

[0056] FIG2 is a schematic diagram of the internal structure of the tank in FIG1 ;

[0057] FIG3 is a schematic diagram of the external structure of the tank body in FIG1 ;

[0058] FIG4 is an exploded view of the structure of the lower air intake guide portion according to an embodiment of the present application;

[0059] FIG5 is a cross-sectional view of a lower air intake guide portion according to an embodiment of the present application;

[0060] FIG6 is a cross-sectional view of a lower air intake guide portion according to another embodiment of the present application;

[0061] FIG7 is a cross-sectional view of an air intake guide portion according to another embodiment of the present application;

[0062] FIG8 is a cross-sectional view of a humidification tank in a working position according to an embodiment of the present application;

[0063] FIG9 is a cross-sectional view of the humidification tank in FIG8 from another perspective;

[0064] FIG10 is a cross-sectional view of a humidification tank in a state rotated 90° forward according to an embodiment of the present application;

[0065] FIG11 is a schematic structural diagram of the air inlet guide portion and the air outlet guide portion in FIG10 ;

[0066] FIG12 is a cross-sectional view of a humidification tank rotated 90° backwards according to an embodiment of the present application;

[0067] FIG13 is a schematic structural diagram of the air inlet guide portion and the air outlet guide portion in FIG12;

[0068] FIG14 is a cross-sectional view of a humidification tank rotated 90° to the left according to an embodiment of the present application;

[0069] FIG15 is a schematic structural diagram of the air inlet guide portion and the air outlet guide portion in FIG14;

[0070] FIG16 is a cross-sectional view of a humidification tank rotated 90° to the right according to an embodiment of the present application;

[0071] FIG17 is a schematic structural diagram of the air inlet guide portion and the air outlet guide portion in FIG16;

[0072] FIG18 is an exploded view of the structure of the lower air intake guide portion according to an embodiment of the present application;

[0073] FIG19 is a cross-sectional view of a lower air intake guide according to an embodiment of the present application;

[0074] FIG20 is a cross-sectional view of a lower air intake guide portion according to another embodiment of the present application;

[0075] FIG21 is a cross-sectional view of an air intake guide portion according to another embodiment of the present application;

[0076] FIG22 is a cross-sectional view of the humidification tank in FIG8 from another perspective;

[0077] FIG23 is a schematic structural diagram of the air inlet guide portion and the air outlet guide portion in FIG10;

[0078] FIG24 is a schematic structural diagram of the air inlet guide portion and the air outlet guide portion in FIG12;

[0079] FIG25 is a schematic structural diagram of the air inlet guide portion and the air outlet guide portion in FIG14;

[0080] FIG26 is a schematic structural diagram of the air inlet guide portion and the air outlet guide portion in FIG16 .

[0081] in:

[0082] The figures of the drawings involved in the technical solution of the first aspect are as follows: 1 tank body; 11 base; 12 cover body; 121 rib; 13 internal chamber; 14 seal; 15 heat conducting plate; 16 air flow inlet; 17 air flow outlet; 2 air inlet guide part; 21 first end; 22 second end; 23 bent guide pipe; 231 first section; 232 second section; 233 third section; 2331 anti-backflow rib; 234 arc-shaped transition section; 235 partition plate; 236 lower shell; 237 upper shell; 24 groove; 25 rectifying part; 26 liquid baffle; 27 guide rib; 3 air outlet guide part; 31 third end; 32 fourth end; 4 humidifying liquid.

[0083] The figures of the drawings involved in the technical solution of the second aspect are as follows: 1 tank body; 11 bottom shell; 12 upper cover; 121 convex rib; 13 internal chamber; 14 sealing member; 15 heat conducting plate; 16 air flow inlet; 17 air flow outlet; 2 air inlet guide portion; 21 first end; 22 second end; 23 guide pipe; 231 first flow channel; 2311 first section; 2312 second section; 232 second flow channel; 2321 anti-backflow convex rib; 233 arc-shaped transition section; 234 partition plate; 235 lower shell; 236 upper shell; 24 groove; 25 rectifying portion; 26 liquid baffle; 27 guide rib; 3 air outlet guide portion; 31 third end; 32 fourth end; 4 humidifying liquid. DETAILED DESCRIPTION

[0084] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0085] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0086] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0087] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0088] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the reference terms "implementation method", "embodiment", "one embodiment", "example" or "specific example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0089] According to the first aspect of the present application, a ventilator humidification tank is provided, including but not limited to the following implementation contents:

[0090] As shown in Figures 1 to 17, a ventilator humidification tank includes a tank body 1 and an internal chamber 13, the tank body 1 is provided with an air flow inlet 16 and an air flow outlet 17, the internal chamber 13 is constructed to accommodate a humidifying liquid 4 and can be connected to an external air path through the air flow inlet 16 and the air flow outlet 17; the tank body 1 includes an insertion end and a gripping end, and the insertion end can be inserted into the interior of the ventilator host; the humidification tank also includes an air intake guide part 2 having a first end 21 and a second end 22, the first end 21 is sealedly connected to the air flow inlet 16, and the second end 22 is connected to the internal chamber 13; the air intake guide part 2 includes a bent guide tube 23 having at least two bending angles, so that the first end 21 and the second end 22 are located on opposite sides.

[0091] Furthermore, as shown in FIG. 4 and FIG. 5 , the first end 21 and the second end 22 are respectively located on the left and right sides of the air intake guide portion 2 , and are also respectively located on the front and rear sides of the air intake guide portion 2 .

[0092] It should be noted that the humidifying liquid 4 is preferably water, which is convenient for users to replace. Before use, municipal tap water or purified water can be added to the tank, so that the airflow contacts the water during use to complete the humidification. This saves usage costs and allows users to easily replace or replenish the humidifying liquid 4.

[0093] Optionally, as shown in Figures 8 and 9, the air intake guide 2 is located above the humidification liquid 4, and the air intake guide 2 and the humidification liquid 4 are arranged up and down, so that the humidification liquid 4 is difficult to flow upward into the air intake guide 2 under the action of its own gravity, thereby reducing the risk of backflow from the air flow inlet 16.

[0094] Optionally, an opening is provided on one side of the ventilator main unit, and the insertion end of the tank body 1 can extend into the interior of the main unit from the opening, while the gripping end is located outside the main unit, so that the user can conveniently install the tank body 1 directly to the main unit from one side, and remove the tank body 1 directly from the main unit by holding the gripping end located on the outside, without having to disassemble the entire main unit, thereby reducing the difficulty of assembly and disassembly and improving the user experience.

[0095] When the humidifier tank of the present application is in use, the airflow blown by the blowing member enters the air inlet guide portion 2 through the first end 21, flows through the bent guide tube 23, and then enters the internal chamber 13 through the second end 22, where it comes into contact with the humidifying liquid 4 and becomes wet. The air inlet guide portion 2 includes a bent guide tube 23 with at least two bending angles, which makes the flow path of the airflow before it comes into contact with the humidifying liquid 4 longer and more tortuous. On the one hand, it reduces the whistling sound generated during the flow of the airflow, and reduces the impact force between the airflow and the inner wall of the bent guide tube 23, reducing the noise generated by the collision. On the other hand, the tortuous air path also lengthens the path for the sound waves to be transmitted, making it difficult for internal noise to be transmitted to the outside, having a good noise reduction and silencing effect, and improving the user experience.

[0096] In addition, the humidifying liquid 4 in the tank body 1 can only flow back to the airflow inlet 16 in the direction opposite to the airflow direction through the bent guide tube 23. The bent extension of the bent guide tube 23 also extends the path for the liquid to flow back to the airflow inlet 16, reducing the risk of backflow. Even if some liquid flows back from the second end 22 into the bent guide tube 23, the liquid cannot flow directly to the first end 21 due to the obstruction of the winding structure inside the bent guide tube 23, which increases the difficulty of liquid flow. In addition, the internal chamber 13 is a large space for holding the humidifying liquid. The number of chambers is single and the structure is simple. There is no complex partition structure, which not only saves production and processing costs, but also facilitates user use and greatly reduces the difficulty of operation. The user only needs to fill the tank body 1 with humidifying liquid 4 before use.

[0097] It should be noted that the present application does not limit the structure of the curved flow guide tube 23. For example, the curved flow guide tube 23 may extend in a Z-shape as a whole to form bending angles at two corners. Alternatively, the curved flow guide tube may extend in an S-shape.

[0098] In an optional embodiment, as shown in FIG4 , the curved flow guide tube 23 includes a first section 231 , a second section 232 and a third section 233 connected in sequence. The first section 231 and the third section 233 extend along a first direction, and the second section 232 extends in the opposite direction of the first direction.

[0099] When the airflow flows from the first section 231 to the second section 232, since the two extend in opposite directions, the airflow needs to turn about 180 degrees here. Similarly, when entering the third section 233 from the second section 232, the airflow also needs to turn about 180 degrees. The sound will be significantly reduced or eliminated when making a large-angle turn. Therefore, by designing the extension directions of the three sections, the airflow completes two large-angle turns in the curved guide tube 23, which has a better noise reduction and silencing effect. At the same time, although the extension directions of the three sections are not exactly the same, the three sections are still parallel to each other, so that the three can be arranged side by side, which helps to reduce the volume of the curved guide tube 23 and save space in the tank body 1, thereby helping to achieve miniaturization of the entire ventilator and making it more convenient for home use.

[0100] Optionally, as shown in Figure 4, an arc-shaped transition section 234 is provided between the first section 231 and the second section 232, and between the second section 232 and the third section 233, so that the airflow is guided by the arc-shaped transition section 234 to softly and smoothly complete the transition between the two sections, thereby improving the airflow efficiency, preventing airflow turbulence, and reducing the noise generated by the violent collision of the airflow with the inner wall of the bent guide tube 23.

[0101] Furthermore, as shown in Figure 4 , the curved air guide 23 includes an upper shell 237 and a lower shell 236, which cooperate to form a channel for airflow. The air intake guide 2 also includes an air intake pipe fixed to one side of the curved air guide 23, which encloses at least a portion of the first section 231. The upper shell 237 and the lower shell 236 can be fixedly connected by gluing, welding, snapping, screwing, or other methods. When a detachable method such as snapping or screwing is used, a sealing ring must be provided at the connection between the two to ensure the airflow channel is sealed and prevent air leakage.

[0102] Furthermore, as shown in FIG4 , FIG5 and FIG11 , the first section 231 , the second section 232 and the third section 233 are arranged side by side and the position of the third section 233 is higher than the first section 231 and / or the second section 232 .

[0103] Furthermore, as shown in Figure 11, the first section 231, the second section 232 and the third section 233 are arranged side by side in a direction perpendicular to the first direction, and a partition plate 235 is provided between two adjacent sections to reduce the space occupied by the bent guide tube 23, leaving more space in the internal chamber 13 for holding the humidification liquid 4, thereby improving the humidification efficiency.

[0104] It is understood that the airflow inlet 16 is connected to the first section 231, and the airflow flows through the first section 231, the second section 232, and the third section 233 in the curved guide tube 23, and enters the internal chamber 13 from the second end 22. The third section 233 is positioned higher, which facilitates the installation of other guide structures at the second end 22, that is, the outlet of the third section 233, to improve the contact effect between the airflow and the humidification liquid 4. In use, the air intake guide 2 is fixed above the internal chamber 13, and the humidification liquid 4 accumulates at the bottom of the internal chamber 13 under the action of gravity, located below the air intake guide 2. Therefore, by raising the position of the third section 233, the space between the two can be increased while maintaining a certain liquid level of the humidification liquid 4, thereby facilitating the arrangement of the guide structure. The guide structure or the second end 22 still has a gap with the liquid surface of the humidifying liquid 4, so that after the air flows into the internal chamber 13, it contacts the surface of the humidifying liquid 4 and does not flow below the liquid surface of the humidifying liquid 4, thereby reducing the probability of immersion in the humidifying liquid 4, thereby avoiding the air flow causing a large disturbance to the humidifying liquid 4 and generating noise.

[0105] In one example, the heights of the first section 231, the second section 232, and the third section 233 increase in sequence. In another example, the first section 231 and the second section 232 are the same height, and the third section 233 is higher than the first and second sections. In yet another example, the first section 231 is lower than the second section 232, and the third section 233 is the same height as the second section 232.

[0106] In addition, the third section 233 may extend horizontally so that the entire height of the third section 233 is higher than the second section 232 and / or the first section 231. In an optional embodiment, as shown in Figures 5 to 7, the height of the bottom of the third section 233 gradually decreases along the first direction.

[0107] The bottom height of the third section 233 gradually decreases from the inlet to the outlet. This, on the one hand, increases the aperture at the outlet of the third section 233, reduces pressure, and appropriately reduces the airflow velocity, thereby making the contact between the airflow and the humidifying liquid 4 softer and reducing noise. Furthermore, the increase in aperture can increase the amount of air flowing out per unit time, allowing more airflow to enter the internal chamber 13 and contact the humidifying liquid 4 to complete humidification, thereby improving humidification efficiency. On the other hand, the bottom height of the third section 233 gradually increases along the path of the humidifying liquid 4's reverse flow, thereby increasing the difficulty of the humidifying liquid 4's reverse flow, increasing the resistance to the reverse flow of the humidifying liquid 4, reducing the reverse flow velocity, and improving the anti-reverse flow effect.

[0108] In this embodiment, because the bottom of the third section 233 is an inclined extending structure, the third section 233 can be positioned higher than the first section 231 and / or the second section 232 as a whole, that is, the lowest end of the bottom of the third section 233 is higher than the first section 231 and / or the second section 232. Alternatively, a portion of the third section 233 can be higher than the first section 231 and / or the second section 232. For example, the lowest end of the third section 233 can be at the same height as or lower than the first section 231 and / or the second section 232, while the highest end of the third section 233 is higher than the first section 231 and / or the second section 232.

[0109] Optionally, as shown in FIG6 and FIG7 , the bottom wall of the third section 233 is provided with an anti-backflow rib 2331 protruding upward.

[0110] An anti-backflow rib 2331 is provided in the third section 233 to form a height difference in the third section 233, so that when the humidification liquid 4 flows back along the third section 233, it needs to pass over the anti-backflow rib 2331. However, under the action of the liquid's own gravity and the resistance of the forward-flowing airflow in the third section 233, the humidification liquid 4 is difficult to flow upward over the anti-backflow rib 2331, so that the humidification liquid flowing back into the third section 233 is blocked by the anti-backflow rib 2331 and cannot continue to flow back into the second section 232, and is thus blocked in the third section 233.

[0111] As shown in Figure 6, in one example, the bottom of the third section 233 is divided into two parts along the extension direction, wherein the wall thickness of the part near the inlet of the third section 233 is thicker, and the wall thickness of the part near the outlet of the third section 233 is thinner, thereby forming a step surface between the two parts to form the anti-backflow rib 2331. Of course, in other examples, the bottom of the third section 233 can also be divided into more parts, so that the wall thickness of each part gradually decreases along the extension direction of the third section 233, so that the third section 233 is arranged in a stepped manner, forming more steps and improving the anti-backflow effect.

[0112] In another example, as shown in FIG. 7 , a portion of the bottom of the third section 233 protrudes upward to form an anti-backflow rib 2331 , and the anti-backflow rib 2331 does not extend to the entrance of the third section 233 .

[0113] As an optional embodiment, the cross-sectional area variation between the first section 231 and the second section 232, and / or between the second section 232 and the third section 233 is less than 10%. In this embodiment, by limiting the variation in the cross-sectional area of ​​the three sections, the overall air duct within the curved air guide duct 23 is made more uniform, thereby ensuring a more uniform airflow velocity, avoiding airflow turbulence, and reducing noise.

[0114] Optionally, as shown in FIG4 , the width of the third section 233 gradually increases along the first direction to increase the outlet of the third section 233 , increase the air flow entering the internal chamber 13 per unit time, and improve the air supply efficiency and humidification efficiency.

[0115] In an optional embodiment of the present embodiment, as shown in Figures 4 to 7, the air intake guide 2 also includes a rectifying portion 25 arranged at the second end 22, the inlet of the rectifying portion 25 is connected to the outlet of the air intake guide 2, the outlet of the rectifying portion 25 is connected to the internal chamber 13, and the position of the outlet of the rectifying portion 25 is lower than the inlet position of the rectifying portion 25.

[0116] The airflow flowing out from the outlet of the third section 233 enters the internal chamber 13 and contacts the humidification liquid 4 after being rectified by the rectifying part 25. The outlet position of the rectifying part 25 is relatively low, so that the outflow position of the airflow is closer to the liquid surface of the humidification liquid 4, thereby ensuring that more airflow can contact the humidification liquid 4 to complete humidification, improve the humidification effect, and reduce the probability of the airflow flowing out of the humidification tank directly for user use without being humidified.

[0117] Furthermore, as shown in Figures 5 to 8, the outlet position of the rectifying portion 25 is lower than the position of the first section 231, thereby increasing the flow space of the airflow after flowing out of the rectifying portion 25. The airflow can flow in the space between the bottom of the bent guide tube 23 and the liquid surface of the humidifying liquid 4, reducing the flow resistance of the airflow and avoiding the airflow being blocked by the outer wall of the first section 231 after flowing out of the outlet of the rectifying section 25, thereby reducing the flow efficiency.

[0118] As shown in FIG5 , the curved flow guide tube 23 extends downward at the end of the third section 233 to form a rectifying portion 25, so that the airflow in the third section 233 flows downward under the guidance of the rectifying portion 25 and enters the internal chamber 13 at a position closer to the liquid surface of the humidification liquid 4. When the humidification liquid 4 flows back, it needs to flow upward to pass through the rectifying portion 25 and enter the third section 233, thereby further increasing the difficulty of the humidification liquid 4 flowing back and improving the anti-backflow effect.

[0119] Optionally, as shown in Figures 5 to 8, the outlet of the rectifying portion 25 is configured so that the airflow enters the internal chamber 13 in a direction different from the first direction. After the airflow in the third section 233 flows along the first direction to the rectifying portion 25, it is rectified and guided by the rectifying portion 25 and enters the internal chamber 13 in a direction different from the first direction. The airflow is further redirected at the rectifying portion 25, further extending the airflow path and making the air path more tortuous, thereby further reducing noise generation.

[0120] In an optional embodiment, as shown in FIG5 to FIG7 , a liquid baffle 26 is provided on the lower side of the outlet of the rectifying portion 25 , and the liquid baffle 26 extends toward the first end 21 to below the air inlet guide portion 2 .

[0121] The liquid baffle 26 can block the outlet below the rectifying portion 25 in the vertical direction, reducing the risk of the humidifying liquid 4 splashing into the rectifying portion 25 and then entering the bent flow guide tube 23. At the same time, the liquid baffle 26 can also guide the direction of the airflow when entering the internal chamber 13, so that the airflow can contact the humidifying liquid 4 in a direction parallel to or oblique to the liquid surface, reducing the collision force between the airflow and the humidifying liquid 4, reducing noise, and preventing the airflow from colliding with the humidifying liquid 4 perpendicular to the liquid surface, disturbing the liquid and generating noise.

[0122] Furthermore, as shown in FIG. 5 to FIG. 8 , the liquid baffle plate 26 extends obliquely downward to form a flow guide slope on the surface of the liquid baffle plate 26 .

[0123] The diversion bevel makes air-flow contact with the humidification liquid 4 of below with the direction of tilting downward, has both reduced the noise that air-flow and humidification liquid 4 violent collisions produce, and can blow out more evenly when the air-flow after the rectification part 25 is regularized through the liquid baffle 26 again, and the contact area with humidification liquid 4 is bigger, and air-flow and humidification liquid 4 can fully contact, and guarantee humidification efficiency, improve airflow humidity.In addition, when the humidification liquid 4 of below is upwards countercurrent, due to the existence of the diversion bevel, humidification liquid 4 needs to overcome self-gravity and can flow upward, therefore reduced the risk that countercurrent occurs.And under the guidance of the diversion bevel, the humidification liquid that flows to on the liquid baffle 26 also can flow back to below under gravity, and can not accumulate on the liquid baffle 26.

[0124] Of course, the liquid baffle 26 may also extend horizontally so that the airflow enters the internal chamber 13 in a direction opposite to the first direction, which is not specifically limited here.

[0125] Optionally, as shown in Figures 4, 6, and 7, the rectifying portion 25 is provided with a guide rib 27, which is curved and extended to guide the fluid to flow toward the outlet of the rectifying portion 25. The guide rib 27 is convexly curved toward the inlet of the rectifying portion 25, thereby forming a concave arc surface structure on the side facing the outlet of the rectifying portion 25, guiding the airflow flowing thereto and the humidifying liquid 4 flowing back thereto, so that the fluid flows downward into the internal chamber 13.

[0126] As shown in FIG6 and FIG7 , a liquid baffle plate 26 is provided below the rectifying portion 25 , and the guide ribs 27 are provided on the upper side of the liquid baffle plate 26 .

[0127] As an optional embodiment of the present application, as shown in Figures 1, 4 and 11, the humidification tank also includes an air outlet guide portion 3 having a third end 31 and a fourth end 32, the third end 31 is connected to the internal chamber 13, and the fourth end 32 is sealed to the air flow outlet 17.

[0128] After entering the internal chamber 13, the airflow comes into contact with the humidifying liquid 4 and becomes moistened. It then enters the outlet air guide 3 through the third end 31 and exits through the airflow outlet 17 at the fourth end 32. It then flows through the pipeline to the mask for use by the user. Furthermore, as shown in Figures 4 and 11, the outlet air guide 3 is an outlet pipe disposed on one side of the inlet air guide 2. The first section 231, second section 232, third section 233 of the curved air guide 23, and the outlet pipe are arranged in sequence.

[0129] Furthermore, as shown in Figures 1 and 3, the humidifier includes a base 11 and a cover 12 that can be interlocked, and an air inlet 16 and an air outlet 17 are provided on the cover 12 and extend toward the internal chamber 13 to form an air inlet mounting portion and an air outlet mounting portion, respectively.

[0130] Optionally, as shown in FIG1 , the cover 12 and the base 11 cooperate to form an internal chamber 13. The space within the cover 12 is used to install the air inlet guide 2 and the air outlet guide 3, and the space within the base 11 is used to hold the humidifying liquid 4. It is understandable that the amount of humidifying liquid 4 in the internal chamber 13 is determined by the height of the base 11. When the user replenishes the humidifying liquid 4 into the internal chamber 13, the cover 12 needs to be opened. At this time, the tank body 1 is in an open state. When the humidifying liquid 4 is added to the base 11, once the liquid level is higher than the height of the base 11, the excess liquid will overflow the base 11. In other words, in the normal working orientation (when the humidifying tank is stationary in the working state), the maximum liquid level of the humidifying liquid 4 in the internal chamber 13 is flush with the upper edge of the side wall of the base 11. Therefore, preferably, the height of the cover 12 is greater than the height of the base 11, so that the second end 22 of the air inlet guide 2 is not lower than the upper edge of the side wall of the base 11. On the one hand, it can provide enough installation space for the air inlet guide 2 and the air outlet guide 3 to flow out, so as to avoid the two being immersed below the liquid level after the cover is closed. On the other hand, when the humidification tank is turned upside down and in an inverted state, the humidification liquid 4 is concentrated in the space of the cover 11, which has the air inlet guide 2 and the air outlet guide 3, and also takes up a certain amount of space, so that the liquid level of the humidification liquid 4 rises. Therefore, the higher height can compensate for a part of the space occupied by the air inlet guide 2 and the air outlet guide 3, so that the liquid level is lower than the second end 22 of the air inlet guide 2, thereby preventing the humidification liquid 4 from flowing back from the air flow inlet 16 to the blast member when the humidification tank is in an inverted state.

[0131] Optionally, as shown in FIG1 , a seal 14 is provided between the base 11 and the cover 12 to ensure sealing of the interior of the tank body 1 after the cover is closed, thereby preventing leakage of the humidifying liquid 4 and the airflow.

[0132] Furthermore, as shown in FIG1 , FIG4 and FIG11 , the air inlet guide portion 2 and the air outlet guide portion 3 are constructed as an integral structure and can be plugged and matched with the air inlet mounting portion and the air outlet mounting portion as a whole.

[0133] The air inlet guide 2 and the air outlet guide 3 are an integral structure and are pluggable with the tank body 1, so that they can be installed or removed from the tank body 1 as a whole. This allows the air duct assembly in the humidifier tank to be installed or removed as an independent module, reducing the difficulty of processing and assembly and improving assembly efficiency. It also makes it convenient for users to clean the air inlet guide 2 and the air outlet guide 3. At the same time, after the air inlet guide 2 and the air outlet guide 3 are removed, the interior of the tank body 1 becomes a complete cavity, thereby increasing the volume of the internal chamber 13, allowing users to place more humidifying liquid 4 and improving humidification efficiency.

[0134] Furthermore, as shown in FIG. 1 and FIG. 3 , the air flow inlet 16 and the air flow outlet 17 are located on the same side of the tank body 1 , thereby facilitating the connection of pipelines and optimizing the pipeline layout.

[0135] Optionally, as shown in FIG1 , FIG4 , and FIG11 , the air inlet guide portion 2 or the air outlet guide portion 3 is provided with a positioning structure, and the cover body 12 is provided with a matching structure that matches the positioning structure.

[0136] When installing the air inlet guide part 2 and the air outlet guide part 3, the positioning structure and the matching structure can be used as a reference to facilitate installation, and can play a fool-proof role, allowing the user to install the air inlet guide part 2 and the air outlet guide part 3 to the cover body 12 in the correct posture, reducing the difficulty of assembly and improving ease of use.

[0137] As shown in Figures 1 and 11, the mating structure is a rib 121 provided on the cover body 12, and the positioning structure is a groove 24 provided corresponding to the rib 121. The two are of the same or similar shape so that the user can directly know the corresponding relationship between the two. Of course, the positioning structure can also be a rib, and the corresponding mating structure can be a groove, or the positioning structure and mating structure can be other structures respectively, as long as they can cooperate to perform the installation and positioning function of the air inlet guide part 2 and the air outlet guide part 3, and there is no limitation here.

[0138] Optionally, as shown in FIG2 , the base 11 is further provided with a heat conducting sheet 15 , which is sealed and fixed to the base 11 to transfer the heat of the heating device to the internal chamber 13 , so that the airflow in the internal chamber 13 is not only humidified but also heated and the temperature is increased, making the user breathe more comfortably and improving the user experience.

[0139] The flow path of the airflow of the ventilator when flowing through the humidification tank of the present application is: the airflow blown out by the blower enters the first end 21 of the air inlet guide part 2 through the air inlet 16, and then enters the bent guide tube 23, and makes multiple turns inside the bent guide tube 23, and flows through the first section 231, the second section 232 and the third section 233 in turn, and at the second end 22, it is rectified by the rectifying section 25 and guided by the liquid baffle 26 to enter the internal chamber 13 downward and come into contact with the humidification liquid 4 below to be moistened. The moistened airflow enters the air outlet guide part 3 through the third end 31, and flows out from the fourth end 32 through the air outlet 17, flows to the user end through the breathing tube and the mask, and is used by the user.

[0140] The humidifier tank of the present application designs the air flow path inside the air inlet guide part 2, so that when the humidifier tank is rotated no more than 90 degrees in any direction from the working position, the humidifying liquid 4 cannot flow to the first end 21, that is, the air flow outlet 16. Especially for small-sized portable household ventilators, even if the user turns over during sleep or uses the machine improperly and causes it to fall over, the humidifying liquid 4 will not flow back, thereby ensuring the safety and service life of the blower.

[0141] Furthermore, taking the extension direction of the first section 231, that is, the aforementioned first direction, as an example of a primary viewing angle, in the working orientation of the humidifier tank, as shown in FIG9 , the air inlet guide 2 and the air outlet guide 3 are located above the humidifying liquid 4, the air inlet 16 and the air outlet 17 face the front, the first end 21 of the air inlet guide 2 is located at the front side of the tank body 1, and the second end 22 is located at the rear side of the tank body 1. At this time, the second end 22 of the air inlet guide 2 is higher than the liquid level of the humidifying liquid 4, the humidifying liquid 4 is at a lower position, and there is a smaller risk of backflow.

[0142] When the humidifier tank is rotated forward 90°, as shown in Figures 10 and 11, the humidifying liquid 4 now submerges the air inlet 16 and the air outlet 17. Since the air inlet 16 is sealed to the first end 21, the humidifying liquid 4 naturally does not flow out of the air inlet 16. In this state, the second end 22 is located above the liquid level of the humidifying liquid 4, so the humidifying liquid 4 cannot enter the air inlet guide portion 2 through the second end 22, and reverse flow cannot be achieved. Even if some of the humidifying liquid 4 enters the curved guide tube 23 from the second end 22 due to sloshing, it will also gather at the bottom. In the state shown in Figure 11, the curved guide tube 23 has multiple sections extending upward, which will also form a barrier to the liquid entering the curved guide tube 23, preventing it from reaching the first end.

[0143] When the humidification tank is rotated backward 90°, as shown in Figures 12 and 13, there is a partition plate 235 between the second section 232 and the third section 233. In this state, the highest point of the partition plate 235 is higher than the liquid level of the humidification liquid 4. This setting method can ensure that when the humidification tank is in this position, the humidification liquid 4 cannot enter the second section 232 and the first section 231. Even if the humidification tank is rotated reversely from this position to the working position, the humidification liquid 4 cannot flow to the air flow inlet 16, further preventing the humidification liquid 4 from flowing back into the blower.

[0144] Optionally, as shown in FIG11 , the first end 21 and the second end 22 of the air inlet guide 2 are respectively located on the left and right sides of the air inlet guide 2 so that when the humidifier tank rotates left and right, the first end 21 and the second end 22 are at different heights.

[0145] When the humidification tank is rotated 90° to the left, as shown in Figures 14 and 15, a partial area 22 of the second end is immersed below the liquid surface, and the first end 21 is above the liquid surface. The humidification liquid 4 also cannot flow upward to the first end 21. Moreover, since there is a partition plate 235 between the first section 231, the second section 232, and the third section 233, in this state, at least a partial area of ​​the partition plate between the first section 231 and the second section 232 is located above the liquid surface, which can also hinder the humidification liquid 4 from flowing to the first end 21.

[0146] When the humidification tank is rotated 90° to the right, as shown in Figures 16 and 17, the first end 21 is immersed below the liquid surface, and a part of the second end 22 is above the liquid surface. Since the air flow inlet 16 and the first end 21 are sealed and connected, the humidification liquid 4 will not flow out directly from the air flow inlet 16. At least a part of the partition plate between the third section 233 and the second section 232 is located above the liquid surface, which blocks the humidification liquid 4 entering the second end. Therefore, the humidification liquid 4 cannot flow to the first end 21 in the bent guide tube 23.

[0147] In the above embodiment, the humidifier tank is rotated 90 degrees in the four directions of front, back, left, and right to illustrate the anti-backflow effect of the humidifier tank in the four flipped states. Of course, it is understandable that when the humidifier tank is rotated at an angle less than 90 degrees, it can also achieve a good anti-backflow effect. In addition, the humidifier tank can also maintain a good anti-backflow effect when rotating in other directions, which will not be listed here one by one.

[0148] In addition, it should be noted that, in extreme cases, the posture of the humidifier tank of the present application can be artificially and intentionally adjusted, and the humidification liquid inside it may flow back from the air flow inlet 16, for example, by collision or rapid and / or repeated rotation of the humidification tank. However, during the actual use of the ventilator, if the user finds that the ventilator body has fallen over, the posture should be adjusted in time to restore it to its normal working orientation. Therefore, the present application mainly solves the problem of humidification liquid backflow in the common tilted or flipped state of the humidifier tank in actual use, and cannot completely avoid the humidification liquid backflow caused by artificial and deliberate swinging of the humidification tank.

[0149] According to the second aspect of the present application, a ventilator humidification tank is provided, including but not limited to the following implementation contents:

[0150] As shown in Figures 1-3, 8, 10, 12, 14, 16 and 18-26, a ventilator humidification tank includes a tank body 1 and an internal chamber 13, the tank body 1 is provided with an air flow inlet 16 and an air flow outlet 17, the internal chamber 13 is configured to accommodate a humidification liquid 4 and to communicate with an external air path through the air flow inlet 16 and the air flow outlet 17; the tank body 1 includes an insertion end and a gripping end, the insertion end can be inserted into the interior of the ventilator host; the humidification tank also includes an inlet having a first end 21 and a second end 22. The air guide part 2, the first end 21 is sealedly connected to the air flow inlet 16, and the second end 22 is connected to the internal chamber 13; the air inlet guide part 2 includes a guide tube 23 with a bent extension, the guide tube 23 includes a first flow channel 231 and a second flow channel 232 that are connected to each other, and the internal chamber 13 and the guide tube 23 are configured as follows: when the humidification tank is rotated no more than 90° in any direction from the working position, the humidification liquid 4 cannot enter the first flow channel 231 to prevent the humidification liquid 4 from flowing out of the air flow inlet 16.

[0151] Furthermore, as shown in Figures 18 and 19, the first end 21 and the second end 22 are respectively located on the left and right sides of the air inlet guide part 2, and also on the front and back sides of the air inlet guide part 2, so that when the humidification tank is rotated forward, backward, left or right in any direction not exceeding 90°, at least one of the first end 21 and the second end 22 is located above the liquid surface of the humidification liquid 4.

[0152] It should be noted that the humidifying liquid 4 is preferably water, which is convenient for users to replace. Before use, municipal tap water or purified water can be added to the tank, so that the airflow contacts the water during use to complete the humidification. This saves usage costs and allows users to easily replace or replenish the humidifying liquid 4.

[0153] Optionally, as shown in Figures 8 and 22, in the working position, the air intake guide 2 is located above the humidifying liquid 4, and the air intake guide 2 and the humidifying liquid 4 are arranged up and down, so that the humidifying liquid 4 is difficult to flow upward into the air intake guide 2 under the action of its own gravity, thereby reducing the risk of backflow from the air flow inlet 16.

[0154] Optionally, an opening is provided on one side of the ventilator main unit, and the insertion end of the tank body 1 can extend into the interior of the main unit from the opening, while the gripping end is located outside the main unit, so that the user can conveniently install the tank body 1 directly to the main unit from one side, and remove the tank body 1 directly from the main unit by holding the gripping end located on the outside, without having to disassemble the entire main unit, thereby reducing the difficulty of assembly and disassembly and improving the user experience.

[0155] The humidification tank of the present application is provided with an air intake guide portion 2. The airflow blown by the blower first enters the air intake guide portion 2, passes through the air duct inside the air intake guide portion 2, and then enters the internal chamber 13, where it comes into contact with the humidification liquid 4 and is moistened. The present application designs the airflow path of the guide tube 23 inside the air intake guide portion 2 so that it bends and extends to form a first flow channel 231 and a second flow channel 232, thereby making the counterflow path of the humidification liquid 4 in the guide tube 23 more tortuous. When the humidification tank is rotated no more than 90 degrees in any direction from the working orientation, the humidification liquid 4 cannot enter the first flow channel 231, and thus cannot flow to the first end 21, that is, the airflow outlet 16. In particular, for a small-sized portable household ventilator, even if the user turns over during sleep or uses the machine improperly and causes the machine to fall over, the humidification liquid 4 will not flow back, thereby ensuring the safety and service life of the blower.

[0156] The curved and extended flow tube 23 also creates a longer and more tortuous path for the airflow before it contacts the humidifying liquid 4. This reduces the whistling sound produced during the flow and the impact of the airflow on the inner wall of the flow tube 23, thereby reducing the noise generated by the collision. Furthermore, the tortuous air path lengthens the path for sound waves to travel, making it difficult for internal noise to be transmitted to the outside. This provides a good noise reduction and silencing effect, improving the user experience.

[0157] Furthermore, as shown in FIG22 , taking the extension direction of the second flow channel 231 as an example from a primary perspective, in the working orientation of the humidifier tank, as shown in FIG22 , the air inlet guide 2 is located above the humidifying liquid 4, the air inlet 16 and the air outlet 17 face the front, the first end 21 of the air inlet guide 2 is located at the front side of the tank body 1, and the second end 22 is located at the rear side of the tank body 1. At this time, the second end 22 of the air inlet guide 2 is higher than the liquid level of the humidifying liquid 4, the humidifying liquid 4 is at a lower position, and there is a smaller risk of backflow.

[0158] The following takes the humidifier tank rotated 90 degrees in the front, back, left and right directions as an example to explain the anti-backflow principle and effect of the humidifier tank after rotation:

[0159] In one embodiment, the air flow inlet 16 is arranged on the front side of the tank body 1, and the first flow channel 231 and the second flow channel 232 both extend along the front and rear directions of the tank body 1. When the humidification tank is rotated forward from the working position to no more than 90°, the second end 22 is higher than the liquid level of the humidification liquid 4.

[0160] Furthermore, when the humidifier tank is rotated forward 90°, as shown in Figures 10 and 23, the humidifying liquid 4 submerges the air inlet 16 and the air outlet 17. Since the air inlet 16 is sealed to the first end 21, the humidifying liquid 4 naturally does not flow out of the air inlet 16. In this state, the second end 22 is located above the liquid level of the humidifying liquid 4, so the humidifying liquid 4 cannot enter the air inlet guide portion 2 through the second end 22, and reverse flow cannot be achieved. Even if some of the humidifying liquid 4 enters the guide tube 23 from the second end 22 due to sloshing, it will gather at the bottom. In the state shown in Figure 23, the guide tube 23 has multiple sections extending upward, which will also form a barrier to the liquid entering the guide tube 23, preventing it from reaching the first end.

[0161] In one embodiment, when the humidification tank is rotated backward from the working position to an angle not exceeding 90°, the first end 21 is higher than the liquid level of the humidification liquid 4 .

[0162] Furthermore, a partition plate 234 is provided in the guide tube 23, and the partition plate 234 is located between the first flow channel 231 and the second flow channel 232. When the humidification tank is rotated backward 90°, the highest point of the partition plate 234 is higher than the liquid level of the humidification liquid 4. This setting method can ensure that when the humidification tank is in this position, the humidification liquid 4 cannot enter the first flow channel 231. Even if the humidification tank is rotated in the opposite direction from this position to the working position, the humidification liquid 4 cannot flow to the air flow inlet 16, further preventing the humidification liquid 4 from flowing back into the blower.

[0163] In one embodiment, the air flow inlet 16 is arranged on the front side of the tank body 1, and a partition plate 234 is provided in the guide tube 23, and the partition plate 234 is located between the first flow channel 231 and the second flow channel 232. When the humidification tank is rotated from the working position to the left and right directions to no more than 90°, at least a part of the partition plate 234 is higher than the liquid level of the humidification liquid 4.

[0164] Furthermore, when the humidification tank is rotated 90° to the left, as shown in Figures 14 and 25, a partial area 22 of the second end is immersed below the liquid surface, and the first end 21 is above the liquid surface. The humidification liquid 4 is also unable to flow upward to the first end 21. In this state, at least a partial area of ​​the partition plate 234 between the first flow channel 231 and the second flow channel 232 is located above the liquid surface, which can also hinder the humidification liquid 4 from flowing to the first end 21.

[0165] When the humidification tank is rotated 90° to the right, as shown in Figures 16 and 26, the first end 21 is immersed below the liquid surface, and a portion of the second end 22 is above the liquid surface. Since the airflow inlet 16 is sealed to the first end 21, the humidification liquid 4 will not flow directly out of the airflow inlet 16. At least a portion of the partition plate 234 between the first flow channel 231 and the second flow channel 232 is located above the liquid surface, which blocks the humidification liquid 4 entering the second end 22. Therefore, the humidification liquid 4 cannot flow to the first end 21 in the flow guide tube 23. In the above embodiment, the anti-backflow effect of the humidification tank in four flipping states is described by taking the humidification tank rotating 90 degrees in the four directions of front, back, left, and right as an example. Of course, it is understandable that when the rotation angle of the humidification tank is less than 90°, it can also have a good anti-backflow effect. In addition, the humidification tank can also maintain a good anti-backflow effect when rotating in other directions, which will not be listed here.

[0166] In addition, it should be noted that, in extreme cases, the posture of the humidifier tank of the present application can be artificially and intentionally adjusted, and the humidification liquid inside it may flow back from the air flow inlet 16, for example, by collision or rapid and / or repeated rotation of the humidification tank. However, during the actual use of the ventilator, if the user finds that the ventilator body has fallen over, the posture should be adjusted in time to restore it to its normal working orientation. Therefore, the present application mainly solves the problem of humidification liquid backflow in the common tilted or flipped state of the humidifier tank in actual use, and cannot completely avoid the humidification liquid backflow caused by artificial and deliberate swinging of the humidification tank.

[0167] As an optional embodiment of the present application, as shown in Figures 18 and 23, the first flow channel 231 includes a first section 2311 and a second section 2312 arranged sequentially and in parallel. The second section 2312 is connected to the second flow channel 232, so that the flow guide tube 23 can extend in a Z-shape as a whole, forming bends at the two corners. Alternatively, the flow guide tube 23 can extend in an S-shape.

[0168] In an optional embodiment, as shown in FIG18 , the first section 2311 , the second section 2312 and the second flow channel 232 are connected in sequence, the first section 2311 and the second flow channel 232 extend in a first direction, and the second section 2312 extends in the opposite direction of the first direction.

[0169] When the airflow flows from the first section 2311 to the second section 2312, since the two extend in opposite directions, the airflow needs to turn about 180° here. Similarly, when entering the second flow channel 232 from the second section 2312, the airflow also needs to turn about 180°. The sound will be significantly reduced or eliminated when making a large-angle turn. Therefore, by designing the extension direction of the three sections of the air duct, the airflow completes two large-angle turns in the guide tube 23, which has a better noise reduction and silencing effect. At the same time, although the extension directions of the three sections of the air duct are not exactly the same, they are still parallel to each other, so that the three can be arranged side by side, which helps to reduce the volume of the guide tube 23 and save space in the tank body 1, thereby helping to achieve miniaturization of the entire ventilator and making it more convenient for home use.

[0170] Optionally, as shown in Figure 18, an arc-shaped transition section 233 is provided between the first section 2311 and the second section 2312, and between the second section 2312 and the second flow channel 232, so that the airflow is guided by the arc-shaped transition section 233 to softly and smoothly complete the transition between the two sections of the air duct, thereby improving the airflow efficiency, preventing airflow turbulence, and reducing the noise generated by the violent collision of the airflow with the inner wall of the guide tube 23.

[0171] Furthermore, as shown in Figure 18 , the air guide 23 includes an upper shell 236 and a lower shell 235 , which together form a channel for airflow. The air intake guide 2 also includes an air intake pipe fixed to one side of the air guide 23 , which encloses at least a portion of the first section 2311. The upper shell 236 and the lower shell 235 can be fixedly connected by gluing, welding, snapping, screwing, or other methods. When a removable method such as snapping or screwing is used, a sealing ring must be provided at the connection to ensure the airflow channel is sealed and prevent air leakage.

[0172] Furthermore, as shown in Figures 18, 19 and 23, the first flow channel 231 and the second flow channel 232 are arranged side by side and a portion of the second flow channel 232 is positioned higher than the first flow channel 231.

[0173] Furthermore, as shown in Figure 23, the first flow channel 231 and the second flow channel 232 are arranged side by side in a direction perpendicular to the first direction, and a partition plate 234 is provided between the two flow channels to reduce the space occupied by the guide tube 23, leaving more space in the internal chamber 13 for holding the humidification liquid 4, thereby improving the humidification efficiency.

[0174] By raising the position of the second flow channel 232, the space between the two can be increased while maintaining a constant level of the humidifying liquid 4, thereby facilitating the arrangement of the flow-guiding structure. This ensures that there is still a gap between the flow-guiding structure or the second end 22 and the level of the humidifying liquid 4. As a result, after the airflow enters the internal chamber 13, it contacts the surface of the humidifying liquid 4 and does not flow below the level of the humidifying liquid 4. This reduces the probability of airflow entering the humidifying liquid 4, thereby preventing the airflow from significantly disturbing the humidifying liquid 4 and generating noise.

[0175] Optionally, as shown in FIG. 20 and FIG. 21 , the bottom wall of the second flow channel 232 is provided with an anti-backflow rib 2321 protruding upward.

[0176] An anti-backflow rib 2321 is provided in the second flow channel 232 to form a height difference in the second flow channel 232, so that when the humidification liquid 4 flows back along the second flow channel 232, it needs to pass over the anti-backflow rib 2321. However, under the action of the liquid's own gravity and the resistance of the forward-flowing airflow in the second flow channel, it is difficult for the humidification liquid 4 to flow upward and pass over the anti-backflow rib 2321. As a result, the humidification liquid 4 that flows back into the second flow channel 232 is blocked by the anti-backflow rib 2321 and cannot continue to flow back into the first flow channel 231, thereby being blocked in the second flow channel 232.

[0177] Furthermore, as shown in FIG20 , in one example, the bottom of the second flow channel 232 is divided into two parts along the extension direction, wherein the wall thickness of the part near the inlet of the second flow channel 232 is thicker, and the wall thickness of the part near the outlet of the second flow channel 232 is thinner, thereby forming a step surface between the two parts to form the anti-backflow rib 2321. Of course, in other examples, the bottom of the second flow channel 232 can also be divided into more parts, so that the wall thickness of each part gradually decreases along the extension direction of the second flow channel 232, so that the second flow channel 232 is arranged in a stepped manner, forming more steps, and improving the anti-backflow effect.

[0178] In another example, as shown in FIG. 21 , a portion of the bottom of the second flow channel 232 protrudes upward to form an anti-backflow rib 2321 , and the anti-backflow rib 2321 does not extend to the inlet of the second flow channel 232 .

[0179] As an embodiment, the cross-sectional area variation of the first flow channel 231 and the second flow channel 232 is less than 10%. In this embodiment, by limiting the variation in the cross-sectional area of ​​the two flow channels, the air duct in the air guide tube 23 is made more uniform as a whole, thereby ensuring a more uniform flow rate, avoiding airflow turbulence, and reducing noise.

[0180] Optionally, as shown in FIG18 , the width of the second flow channel 232 gradually increases along the first direction to increase the outlet of the second flow channel 232 , increase the air flow entering the internal chamber 13 per unit time, and improve the air supply efficiency and humidification efficiency.

[0181] As an embodiment of the present application, as shown in Figures 18 to 21, the air intake guide 2 also includes a rectifying portion 25 arranged at the second end 22, the inlet of the rectifying portion 25 is connected to the outlet of the air intake guide 2, the outlet of the rectifying portion 25 is connected to the internal chamber 13, and the position of the outlet of the rectifying portion 25 is lower than the position of the inlet of the rectifying portion 25.

[0182] The airflow flowing out from the outlet of the second flow channel 232 enters the internal chamber 13 after being rectified by the rectifying part 25 and contacts the humidification liquid 4. The outlet position of the rectifying part 25 is lower, so that the outflow position of the airflow is closer to the liquid surface of the humidification liquid 4, thereby ensuring that more airflow can contact the humidification liquid 4 to complete humidification, improve the humidification effect, and reduce the probability of the airflow flowing out of the humidification tank directly for user use without being humidified.

[0183] Furthermore, as shown in Figures 19 to 21 and Figure 8, the outlet position of the rectifying portion 25 is lower than the position of the first flow channel 231, thereby increasing the flow space of the airflow after flowing out of the rectifying portion 25. The airflow can flow in the space between the bottom of the guide tube 23 and the liquid surface of the humidifying liquid 4, reducing the flow resistance of the airflow, and avoiding the airflow being blocked by the outer wall of the first flow channel 231 after flowing out of the outlet of the rectifying portion 25, thereby reducing the flow efficiency.

[0184] Furthermore, as shown in FIG19 , the flow guide tube 23 extends downward at the end of the second flow channel 232 to form a rectifying portion 25, so that the airflow in the second flow channel 232 flows downward under the guidance of the rectifying portion 25 and enters the internal chamber 13 at a position closer to the liquid surface of the humidifying liquid 4. When the humidifying liquid 4 flows back, it needs to flow upward to pass through the rectifying portion 25 and enter the second flow channel 232, thereby further increasing the difficulty of the humidifying liquid 4 flowing back and improving the anti-backflow effect.

[0185] Optionally, as shown in Figures 19 to 21 and Figure 8, the outlet of the rectifying portion 25 is configured so that the airflow enters the internal chamber 13 in a direction different from the first direction. After the airflow in the second flow channel 232 flows along the first direction to the rectifying portion 25, it is rectified and guided by the rectifying portion 25 and enters the internal chamber 13 in a direction different from the first direction. The airflow is further turned at the rectifying portion 25, further extending the airflow path while making the air path more tortuous, further reducing the generation of noise.

[0186] In an optional embodiment, as shown in FIG. 19 to FIG. 21 , a liquid baffle 26 is provided at the lower side of the outlet of the rectifying portion 25 , and the liquid baffle 26 extends toward the first end 21 to below the air inlet guide portion 2 .

[0187] The liquid baffle 26 can block the outlet below the rectifying portion 25 in the vertical direction, reducing the risk of the humidifying liquid 4 splashing into the rectifying portion 25 and then entering the guide tube 23. At the same time, the liquid baffle 26 can also guide the direction of the airflow when entering the internal chamber 13, so that the airflow can contact the humidifying liquid 4 in a direction parallel to or oblique to the liquid surface, reducing the collision force between the airflow and the humidifying liquid 4, reducing noise, and preventing the airflow from colliding with the humidifying liquid 4 perpendicular to the liquid surface, disturbing the liquid and generating noise.

[0188] Furthermore, as shown in FIG. 19 to FIG. 21 and FIG. 8 , the liquid baffle plate 26 extends obliquely downward to form a flow guide slope on the surface of the liquid baffle plate 26 .

[0189] The diversion bevel makes air-flow contact with the humidification liquid 4 of below with the direction of tilting downward, has both reduced the noise that air-flow and humidification liquid 4 violent collisions produce, and can blow out more evenly when the air-flow after the rectification part 25 is regularized through the liquid baffle 26 again, and the contact area with humidification liquid 4 is bigger, and air-flow and humidification liquid 4 can fully contact, and guarantee humidification efficiency, improve airflow humidity.In addition, when the humidification liquid 4 of below is upwards countercurrent, due to the existence of the diversion bevel, humidification liquid 4 needs to overcome self-gravity and can flow upward, therefore reduced the risk that countercurrent occurs.And under the guidance of the diversion bevel, the humidification liquid that flows to on the liquid baffle 26 also can flow back to below under gravity, and can not accumulate on the liquid baffle 26.

[0190] Of course, the liquid baffle 26 may also extend horizontally so that the airflow enters the internal chamber 13 in a direction opposite to the first direction, which is not specifically limited here.

[0191] Optionally, as shown in Figures 18, 20, and 21, the rectifying portion 25 is provided with a guide rib 27, which is curved and extended to guide the fluid to flow toward the outlet of the rectifying portion 25. The guide rib 27 is convexly curved toward the inlet of the rectifying portion 25, thereby forming a concave arc surface structure on the side facing the outlet of the rectifying portion 25, guiding the airflow flowing thereto and the humidifying liquid 4 flowing back thereto, so that the fluid flows downward into the internal chamber 13.

[0192] Furthermore, as shown in FIG. 20 and FIG. 21 , a liquid baffle plate 26 is provided below the rectifying portion 25 , and the guide ribs 27 are provided on the upper side of the liquid baffle plate 26 .

[0193] In one embodiment, the tank body 1 includes a bottom shell 11 and an upper cover 12, which cooperate to form an internal chamber 13, and the air inlet guide part 2 is arranged on the upper cover 12. When the humidification tank is rotated from the working position to 180°, the first end 21 or the second end 22 is higher than the liquid level of the humidification liquid 4.

[0194] The humidifying liquid 4 inside the humidifying tank has a unique path to flow to the air flow inlet 16, which is to flow from the second end 22 of the air inlet guide part 2 to the first end 21 and then to the air flow inlet 16 through the guide tube 23. Therefore, when the humidifying tank is flipped 180°, the humidifying liquid 4 accumulates in the space where the upper shell 12 is located, and the first end 21 or the second end 22 is higher than the liquid level of the humidifying liquid 4, so that the humidifying liquid 4 needs to overcome its own gravity and flow upward before it can flow to the first end 21, thereby greatly increasing the difficulty of backflow and improving the anti-backflow effect.

[0195] For example, when the first end 21 is above the liquid level of the humidifying liquid 4, the humidifying liquid 4 can enter the flow conduit 23 through the second end 22, but cannot flow upward to the first end 21. When the second end 22 is above the liquid level of the humidifying liquid 4, the liquid level of the humidifying liquid 4 is lower than the opening of the second end 22 and therefore cannot enter the flow conduit 23.

[0196] As an embodiment of the present application, as shown in Figures 1, 18 and 23, the humidification tank also includes an air outlet guide portion 3 having a third end 31 and a fourth end 32, the third end 31 is connected to the internal chamber 13, and the fourth end 32 is sealed to the air flow outlet 17.

[0197] After entering the internal chamber 13, the airflow comes into contact with the humidifying liquid 4 and becomes moistened. It then enters the air outlet guide 3 through the third end 31 and exits through the air outlet 17 at the fourth end 32. It then flows through the pipeline to the mask for use by the user. Specifically, as shown in Figures 4 and 11, the air outlet guide 3 is an air outlet pipe located on one side of the air inlet guide 2. The first flow channel 231, the second flow channel 232, and the air outlet pipe of the guide pipe 23 are arranged side by side.

[0198] Furthermore, as shown in FIG. 1 and FIG. 3 , the air inlet 16 and the air outlet 17 are provided on the upper cover 12 and extend toward the inner chamber 13 to form an air inlet mounting portion and an air outlet mounting portion, respectively.

[0199] Optionally, as shown in FIG1 , the upper cover 12 and the bottom shell 11 cooperate to form an internal chamber 13. The space within the upper cover 12 is used to install the air inlet guide 2 and the air outlet guide 3, and the space within the bottom shell 11 is used to hold the humidifying liquid 4. It is understandable that the amount of humidifying liquid 4 in the internal chamber 13 is determined by the height of the bottom shell 11. When the user replenishes the humidifying liquid 4 into the internal chamber 13, the upper cover 12 needs to be opened. At this time, the tank body 1 is in an open state. When the humidifying liquid 4 is added into the bottom shell 11, once the liquid level is higher than the height of the bottom shell 11, the excess liquid will overflow the bottom shell 11. In other words, in the normal working orientation (when the humidifying tank is stationary in the working state), the maximum liquid level of the humidifying liquid 4 in the internal chamber 13 is flush with the upper edge of the side wall of the bottom shell 11. Therefore, as an option, the height of the upper cover 12 is greater than the height of the bottom shell 11, so that the second end 22 of the air inlet guide 2 is not lower than the upper edge of the side wall of the bottom shell 11. On the one hand, it can provide enough installation space for the air inlet guide 2 and the air outlet guide 3 to flow out, avoiding the two from being immersed below the liquid level after the cover is closed. On the other hand, when the humidification tank is turned upside down and in an inverted state, the humidification liquid 4 is concentrated in the space of the upper cover 11, which has the air inlet guide 2 and the air outlet guide 3, and also takes up a certain amount of space, causing the liquid level of the humidification liquid 4 to rise. Therefore, the higher height can compensate for a portion of the space occupied by the air inlet guide 2 and the air outlet guide 3, making the liquid level lower than the second end 22 of the air inlet guide 2, thereby preventing the humidification liquid 4 from flowing back from the air flow inlet 16 to the blast member when the humidification tank is in an inverted state.

[0200] Optionally, as shown in FIG2 , a seal 14 is provided between the bottom shell 11 and the upper cover 12 to ensure the sealing of the interior of the tank body 1 after the cover is closed, thereby preventing leakage of the humidifying liquid 4 and the airflow.

[0201] Furthermore, as shown in FIG1 , FIG18 and FIG23 , the air inlet guide portion 2 and the air outlet guide portion 3 are constructed as an integral structure, and can be plugged and matched with the air flow inlet mounting portion and the air flow outlet mounting portion as a whole.

[0202] The air inlet guide 2 and the air outlet guide 3 are an integral structure and are pluggable with the tank body 1, so that they can be installed or removed from the tank body 1 as a whole. This allows the air duct assembly in the humidifier tank to be installed or removed as an independent module, reducing the difficulty of processing and assembly and improving assembly efficiency. It also makes it convenient for users to clean the air inlet guide 2 and the air outlet guide 3. At the same time, after the air inlet guide 2 and the air outlet guide 3 are removed, the interior of the tank body 1 becomes a complete cavity, thereby increasing the volume of the internal chamber 13, allowing users to place more humidifying liquid 4 and improving humidification efficiency.

[0203] Furthermore, as shown in FIG. 1 and FIG. 3 , the air flow inlet 16 and the air flow outlet 17 are located on the same side of the tank body 1 , thereby facilitating the connection of pipelines and optimizing the pipeline layout.

[0204] Optionally, as shown in FIG1 , FIG18 , and FIG23 , the air inlet guide portion 2 or the air outlet guide portion 3 is provided with a positioning structure, and the upper cover 12 is provided with a matching structure that matches the positioning structure.

[0205] When installing the air inlet guide part 2 and the air outlet guide part 3, the positioning structure and the matching structure can be used as a reference to achieve convenient installation, and can play a fool-proof role, allowing the user to install the air inlet guide part 2 and the air outlet guide part 3 to the upper cover 12 in the correct posture, reducing the difficulty of assembly and improving ease of use.

[0206] Furthermore, as shown in Figures 1 and 23, the mating structure is a rib 121 provided on the upper cover 12, and the positioning structure is a groove 24 provided corresponding to the rib 121. The two are of the same or similar shape, so that the user can directly know the corresponding relationship between the two. Of course, the positioning structure can also be a rib, and the corresponding mating structure can be a groove, or the positioning structure and mating structure can be other structures respectively, as long as they can cooperate to perform the installation and positioning function of the air inlet guide portion 2 and the air outlet guide portion 3, and there is no limitation here.

[0207] Optionally, as shown in FIG2 , the bottom shell 11 is further provided with a heat conducting sheet 15 , which is sealed and fixed to the bottom shell 11 to transfer the heat of the heating device to the internal chamber 13 , so that the airflow in the internal chamber 13 is not only humidified but also heated and the temperature is increased, making the user breathe more comfortably and improving the user experience.

[0208] The flow path of the airflow of the ventilator when flowing through the humidification tank of the present application is: the airflow blown out by the blower enters the first end 21 of the air inlet guide part 2 through the air inlet 16, and then enters the guide tube 23, and makes multiple turns inside the guide tube 23, and flows through the first flow channel 231 and the second flow channel 232 in turn, and at the second end 22, through the rectification of the rectifying part 25 and the guidance of the liquid baffle 26, it tilts downward into the internal chamber 13 and contacts the humidification liquid 4 below to be wetted. The moistened airflow enters the air outlet guide part 3 through the third end 31, and flows out from the fourth end 32 through the air outlet 17, flows to the user end through the breathing tube and the mask, and is used by the user.

[0209] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0210] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0211] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A humidifier tank for a ventilator, comprising a tank body and an internal chamber, wherein the tank body is provided with an air flow inlet and an air flow outlet, wherein the internal chamber is configured to accommodate a humidifying liquid and can be communicated with an external air path through the air flow inlet and the air flow outlet, wherein the humidifier tank for a ventilator is characterized in that: The tank body includes an insertion end and a gripping end, and the insertion end can be inserted into the interior of the ventilator host; the humidification tank also includes an air intake guide having a first end and a second end, the first end is sealed and connected to the air flow inlet, and the second end is communicated with the internal chamber; the air intake guide includes a bent guide tube having at least two bending angles, so that the first end and the second end are located on opposite sides; Alternatively, the air inlet guide portion includes a guide tube with a bent extension, the guide tube includes a first flow channel and a second flow channel that are interconnected, and the internal chamber and the guide tube are configured such that when the humidification tank is rotated no more than 90° in any direction from the working position, the humidification liquid cannot enter the first flow channel to prevent the humidification liquid from flowing out of the airflow inlet.

2. The humidifier tank for a respirator according to claim 1, characterized in that: The bent flow guide tube includes a first section, a second section and a third section connected in sequence, the first section and the third section extend along a first direction, and the second section extends in the opposite direction of the first direction.

3. The humidifying tank for a respirator according to claim 2, characterized in that: The first section, the second section and the third section are arranged side by side, and the third section is located higher than the first section and / or the second section.

4. The humidifier tank for a respirator according to claim 3, characterized in that: Along the first direction, the height of the bottom of the third section gradually decreases.

5. The humidifying tank for a respirator according to claim 2 or 4, characterized in that: The bottom wall of the third section is provided with anti-backflow ribs protruding upward.

6. The ventilator humidification tank according to claim 2, characterized in that: The cross-sectional areas of the first section and the second section, and / or the second section and the third section vary by less than 10%.

7. The humidifier tank for a respirator according to claim 2, characterized in that: Along the first direction, the width of the third section gradually increases.

8. The humidifier tank for a respirator according to claim 2, characterized in that: The air intake guide also includes a rectifying portion arranged at the second end, the inlet of the rectifying portion is connected to the outlet of the air intake guide, the outlet of the rectifying portion is connected to the internal chamber, and the position of the outlet of the rectifying portion is lower than the position of the inlet of the rectifying portion.

9. The ventilator humidification tank according to claim 8, characterized in that: The outlet position of the rectifying portion is lower than the first section position.

10. The humidifier tank for a respirator according to claim 8, characterized in that: The outlet of the rectifying portion is configured to allow airflow to enter the inner chamber in a direction different from the first direction.

11. The humidifier tank for a respirator according to claim 8, characterized in that: A liquid baffle is provided at the lower side of the outlet of the rectifying portion, and the liquid baffle extends toward the first end to below the air inlet guide portion.

12. The humidifier tank for a respirator according to claim 11, characterized in that: The liquid baffle plate extends downwardly at an angle to form a flow guiding slope on the surface of the liquid baffle plate.

13. The humidifier tank for a respirator according to claim 8, characterized in that: The rectifying portion is provided with a guide rib, and the guide rib is bent and extended to guide the fluid to flow toward the outlet of the rectifying portion.

14. The humidifier tank for a respirator according to claim 1, characterized in that: The humidification tank also includes an air outlet guide portion having a third end and a fourth end, wherein the third end is communicated with the internal chamber, and the fourth end is sealed and connected to the air flow outlet.

15. The humidifier tank for a respirator according to claim 14, characterized in that: The humidification tank comprises a base and a cover body which can be interlocked, and the air flow inlet and the air flow outlet are arranged on the cover body and extend toward the internal chamber to form an air flow inlet mounting portion and an air flow outlet mounting portion respectively.

16. The humidifier tank for the respirator according to claim 15, characterized in that: The air inlet guide portion and the air outlet guide portion are constructed as an integral structure, and can be plugged and matched with the airflow inlet mounting portion and the airflow outlet mounting portion respectively as a whole.

17. The humidifier tank for a respirator according to claim 16, characterized in that: The air inlet guide portion or the air outlet guide portion is provided with a positioning structure, and the cover body is provided with a matching structure matching with the positioning structure.

18. The humidifier tank for a respirator according to claim 1, characterized in that: The air flow inlet is arranged on the front side of the tank body, the first flow channel and the second flow channel both extend along the front-to-back direction of the tank body, and when the humidification tank is rotated forward from the working position to no more than 90°, the second end is higher than the liquid level of the humidification liquid.

19. The humidifier tank for a respirator according to claim 18, characterized in that: A partition plate is provided in the guide tube, and the partition plate is located between the first flow channel and the second flow channel. When the humidification tank is rotated backward from the working position to no more than 90 degrees, the highest point of the partition plate is higher than the liquid level of the humidification liquid.

20. The humidifier tank for a respirator according to claim 1, characterized in that: The air flow inlet is arranged on the front side of the tank body, and a partition plate is provided in the guide tube, and the partition plate is located between the first flow channel and the second flow channel. When the humidification tank is rotated to the left and right directions from the working position to no more than 90°, at least a part of the partition plate is higher than the liquid level of the humidification liquid.

21. The humidifier tank for a respirator according to claim 1, characterized in that: The air intake guide also includes a rectifying portion disposed at the second end, the inlet of the rectifying portion is connected to the outlet of the air intake guide, the outlet of the rectifying portion is connected to the internal chamber, and the position of the rectifying portion outlet is lower than the position of the rectifying portion inlet.

22. The humidifier tank of the respirator according to claim 21, characterized in that: A liquid baffle is provided at the lower side of the outlet of the rectifying part. When the humidifying tank is located at the working position, the lowermost end of the liquid baffle is higher than the liquid level of the humidifying liquid.

23. The humidifier tank of the respirator according to claim 22, characterized in that: The liquid baffle extends obliquely downward along the rectifying portion to below the air intake guide portion.

24. The humidifier tank for a respirator according to claim 21, characterized in that: A guide rib is disposed in the rectifying portion, and the guide rib is bent and extended to guide the fluid to flow toward the outlet of the rectifying portion.

25. The humidifier tank for a respirator according to claim 1, characterized in that: The tank body includes a bottom shell and an upper cover, and the bottom shell and the upper cover cooperate to form the internal chamber. The air inlet guide is arranged on the upper cover. When the humidification tank is rotated from the working position to 180°, the first end or the second end is higher than the liquid level of the humidification liquid.

26. The humidifier tank for a respirator according to claim 14, characterized in that: The first end is provided with an air inlet, the fourth end is provided with a humidification outlet, the air inlet and the humidification outlet face the same side, the air flow inlet and the air inlet are arranged correspondingly, and the air flow outlet and the humidification outlet are arranged correspondingly.

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