CN116832292A - A ventilator humidification tank - Google Patents

Abstract

The present application discloses a ventilator humidification tank, which includes a tank body and an internal chamber. The tank body is provided with an airflow inlet and an airflow outlet. The internal chamber is configured to be able to accommodate humidified liquid and to communicate with the airflow inlet and airflow outlet through the airflow inlet and the airflow outlet. The external air path is connected; the tank body includes an insertion end and a holding end, and the insertion end can be inserted into the ventilator; the humidification tank also includes an air inlet guide part with a first end and a second end, and the first end is sealingly connected to the air flow inlet , the second end is connected to the internal chamber; the air inlet guide part includes a bent guide tube with at least two bending angles, so that the first end and the second end are located on opposite sides. The bending guide tube makes the flow path before the air flow contacts the humidified liquid longer and more tortuous, reducing the noise generated during the air flow process; the tortuous air path also lengthens the path of the sound wave, which has better reduction Noise canceling effect. The bent guide tube also extends the path for liquid backflow to the airflow inlet, reducing the risk of backflow.

Description

A ventilator humidification tank

Technical field

This application belongs to the technical field of medical devices, and specifically relates to a ventilator humidification tank.

Background technique

Ventilators are generally equipped with a blower, and the air outlet of the blower interacts with the user or patient through the breathing tube and mask. Humidified air will make the patient or user feel more comfortable and easier to receive, so humidification components have gradually become one of the essential components of ventilators.

The humidification component is usually a humidification tank installed inside the ventilator. There is an air duct component and a humidifying liquid inside. The air flow blown by the blower enters the humidification tank through the air duct component and contacts the humidifying liquid, causing the air flow to change. It is humidified, and then the humidified air flows out from the outlet of the humidification tank to the user end to assist the user in breathing.

However, since the humidified liquid in the humidification tank is often disturbed by the air flow and the posture of the ventilator changes, especially the miniaturized ventilator, which is lighter and more prone to dumping, the humidified liquid can easily flow back into the air duct assembly. Inside, further reverse flow occurs from the inlet of the air duct assembly to the blower, making the blower prone to risks such as short circuit and damage.

In addition, when the airflow flows from the air duct assembly, a loud whistling sound will be produced. When the airflow comes into contact with the humidifying liquid, it will also disturb the fluctuation of the humidifying liquid and produce noise, making the ventilator noisy during use. larger. Many users choose to wear a ventilator while sleeping, so excessive ventilator noise will directly affect the user's sleep quality and affect the user experience.

Contents of the invention

This application provides a ventilator humidification tank to solve at least one of the above technical problems.

The technical solutions adopted in this application are:

A ventilator humidification tank includes a tank body and an internal chamber. The tank body is provided with an airflow inlet and an airflow outlet. The internal chamber is configured to be able to accommodate humidified liquid and can be connected to an external air path through the airflow inlet and airflow outlet. ; The tank body includes an insertion end and a holding end, and the insertion end can be inserted into the ventilator main body; the humidification tank also includes an air inlet guide portion with a first end and a second end, the first end is sealingly connected to the airflow inlet, and the second end is sealingly connected to the airflow inlet. The air inlet guide part includes a bent guide tube with at least two bent angles, so that the first end and the second end are located on opposite sides.

The bending 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 the first direction, and the second section extends along the opposite direction of the first direction. extend.

The first section, the second section and the third section are arranged side by side and the third section is positioned higher than the first section and/or the second section.

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

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

The cross-sectional area of the first section and the second section, and/or the second section and the third section, varies by less than 10%.

Along the first direction, the width of the third section gradually becomes larger.

The air intake guide part also includes a rectification part disposed at the second end. The inlet of the rectification part is connected with the outlet of the air intake guide part. The outlet of the rectification part is connected with the internal chamber. The outlet of the rectification part is positioned lower than the inlet of the rectification part. Location.

The outlet position of the rectification part is lower than the first section position.

The outlet of the rectifier is configured so that airflow enters the interior chamber in a direction different from the first direction.

A liquid baffle is provided on the lower side of the outlet of the rectification part, and the liquid baffle extends toward the first end and below the air inlet guide part.

The liquid baffle plate extends downward obliquely to form a flow guide slope on the surface of the liquid baffle plate.

The rectifying part is provided with flow guide ribs, and the flow guide ribs are curved and extended to guide the fluid to flow toward the outlet of the rectification part.

The humidification tank also includes an air outlet guide portion having a third end and a fourth end, the third end is connected to the internal chamber, and the fourth end is sealingly connected to the air flow outlet.

The humidification tank includes a base and a cover that can interlock with each other. The air flow inlet and the air flow outlet are provided on the cover and extend into the inner chamber to form an air flow inlet installation part and an air flow outlet installation part respectively.

The air inlet guide part and the air outlet guide part are constructed as an integral structure, and can be plug-fitted with the air flow inlet installation part and the air flow outlet installation part respectively as a whole.

The air inlet guide part or the air outlet guide part is provided with a positioning structure, and the cover is provided with a matching structure that cooperates with the positioning structure.

Due to the adoption of the above technical solutions, the beneficial effects achieved by this application are:

1. When the humidification tank of the present application is used, the air flow blown by the blower enters the internal chamber through the air inlet guide part, and is wetted by contact with the humidification liquid. The air inlet guide part includes at least two bending angles. The bent guide tube makes the flow path before the air flow contacts the humidified liquid longer and more tortuous. On the one hand, it reduces the whistling sound generated during the flow of the air flow, and also reduces the collision force between the air flow and the inner wall of the bent guide tube. , reduce the noise caused by collision. On the other hand, the tortuous air path also lengthens the path of sound waves, making it difficult for internal noise to spread to the outside. It has a better noise reduction and silencing effect and improves the user experience.

In addition, the humidified liquid in the tank can only flow countercurrently through the bending guide tube in the direction opposite to the air flow direction. The bending and extension of the bending guide tube also extends the time required for the liquid to counterflow to the airflow inlet. path, reducing the risk of reverse flow. Even if part of the liquid flows back from the second end into the curved guide tube, the liquid cannot flow directly to the first end due to the obstruction of the meandering structure inside, which increases the difficulty of liquid flow. Moreover, the internal chamber is an entire large-volume space used to hold humidified liquid. The number of chambers is single and the structure is simple. There is no complicated separation structure, which not only saves production and processing costs, but also facilitates user use and greatly reduces the cost of production and processing. Easy to operate, users only need to fill the tank with humidified liquid before use.

2. As a preferred embodiment of the present application, the bending guide tube includes a first section, a second section and a third section connected in sequence, and the first section and the third section extend along the first direction. , the second section extends in the reverse direction of the first direction. When the airflow flows from the first section to the second section, since the two extend in opposite directions, the airflow needs to be turned around 180° here. Similarly, when entering the third section from the second section, The airflow also needs to be diverted approximately 180°. The sound will be significantly reduced or eliminated when making large-angle turns. Therefore, by designing the extension direction of the three sections, the airflow can complete two large-angle turns in the bending guide tube, resulting in better noise reduction and elimination. 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 sections can be arranged side by side, which helps to reduce the volume of the bent guide tube and save space in the tank. , thus helping to miniaturize the ventilator and making it more convenient for home use.

3. As a preferred embodiment of the present application, the bottom wall of the third section is provided with anti-backflow ribs protruding upward. An anti-backflow convex rib is provided in the third section to form a height difference in the third section, so that when the humidified liquid flows back along the third section, it needs to cross the anti-reflux convex rib, and under the action of the liquid's own gravity, and the third section Under the resistance of the forward flow of air in the section, it is difficult for the humidified liquid to flow upward past the anti-reverse flow ribs, so that the humidified liquid that flows back into the third section is blocked by the anti-counterflow ribs and cannot continue to the second section. The flow in the section is reversed and thus blocked in the third section.

4. As a preferred embodiment of the present application, the air intake guide part also includes a rectification part provided at the second end of the air intake guide part, a liquid baffle is provided on the lower side of the outlet of the rectification part, and the liquid baffle faces the first end. Extends to below the air intake guide. The liquid baffle can block the outlet below the rectification part in the vertical direction, reducing the risk of liquid splashing into the rectification part and then entering the bent guide tube. At the same time, the liquid baffle can also guide the direction of the airflow when it enters the internal chamber, so that the airflow can contact the humidified liquid in a direction parallel or inclined to the liquid surface, reducing the collision force between the airflow and the humidified liquid. Reduce noise and prevent the air flow from colliding with the humidified liquid perpendicular to the liquid surface and disturbing the liquid to produce noise.

5. As a preferred embodiment of the present application, the humidification tank further includes an air outlet guide part with a third end and a fourth end. The air inlet guide part and the air outlet guide part are constructed as an integrated structure and can be used as one The whole body is plugged and matched with the air flow inlet installation part and the air flow outlet installation part respectively. The air inlet guide part and the air outlet guide part are an integrated structure and are plugged and matched with the tank body, so that they can be integrally installed inside the tank body or removed from the tank body to make the air duct assembly in the humidification tank It can be installed or disassembled as an independent module, which reduces the difficulty of processing and assembly and improves assembly efficiency. At the same time, it is also convenient for users to clean the air inlet guide part and the air outlet guide part. At the same time, after the air inlet guide part and the air outlet guide part are removed, the inside of the tank becomes a complete cavity, thereby increasing the volume of the internal chamber, allowing the user to put in more humidifying liquid and improve humidification. efficiency.

Description of the drawings

The drawings described here 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 of the present application. In the attached picture:

Figure 1 is a schematic diagram of the internal structure of a humidification tank according to an embodiment of the present application;

Figure 2 is a schematic diagram of the internal structure of the tank in Figure 1;

Figure 3 is a schematic diagram of the external structure of the tank in Figure 1;

Figure 4 is an exploded view of the structure of the air intake guide according to an embodiment of the present application;

Figure 5 is a cross-sectional view of the air intake guide part according to an embodiment of the present application;

Figure 6 is a cross-sectional view of the air intake guide part in another embodiment of the present application;

Figure 7 is a cross-sectional view of the air intake guide part according to another embodiment of the present application;

Figure 8 is a cross-sectional view of a humidification tank in a working orientation according to an embodiment of the present application;

Figure 9 is a cross-sectional view of the humidification tank in Figure 8 from another perspective;

Figure 10 is a cross-sectional view of the humidification tank rotated forward 90° in an embodiment of the present application;

Figure 11 is a schematic structural diagram of the air inlet guide part and the air outlet guide part in Figure 10;

Figure 12 is a cross-sectional view of the humidification tank rotated backward 90° in an embodiment of the present application;

Figure 13 is a schematic structural diagram of the air inlet guide part and the air outlet guide part in Figure 12;

Figure 14 is a cross-sectional view of the humidification tank rotated 90° to the left in an embodiment of the present application;

Figure 15 is a schematic structural diagram of the air inlet guide part and the air outlet guide part in Figure 14;

Figure 16 is a cross-sectional view of the humidification tank rotated 90° to the right in an embodiment of the present application;

FIG. 17 is a schematic structural diagram of the air inlet guide part and the air outlet guide part in FIG. 16 .

in:

1 tank body; 11 base; 12 cover body; 121 ribs; 13 internal chamber; 14 seal; 15 thermal conductor; 16 air flow inlet; 17 air flow outlet;

2 air intake guide part; 21 first end; 22 second end; 23 bent guide tube; 231 first section; 232 second section; 233 third section; 2331 anti-reverse flow rib; 234 arc Shape transition section; 235 partition plate; 236 lower shell; 237 upper shell; 24 groove; 25 rectification part; 26 liquid baffle; 27 flow guide rib;

3 air outlet guide part; 31 third end; 32 fourth end;

4 Humidify the liquid.

Detailed ways

In order to explain the overall concept of the present application more clearly, a detailed description is given below by way of example in conjunction with the accompanying drawings.

Many specific details are set forth in the following description to fully understand the present application. However, the present application can also be implemented in other ways different from those described here. Therefore, the protection scope of the present application is not limited by the specific disclosures below. Limitations of Examples.

In addition, in the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and only It is intended to facilitate the description of the present application and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

In this application, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two elements or an interaction between two elements . For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In this application, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch. In the description of this specification, reference to the terms “embodiment,” “example,” “an embodiment,” “example,” or “specific example” or the like means that specific features are described in connection with the embodiment or example, Structures, materials, or features are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in Figures 1 to 17, a ventilator humidification tank includes a tank 1 and an internal chamber 13. The tank 1 is provided with an airflow inlet 16 and an airflow outlet 17. The internal chamber 13 is configured to accommodate humidification. The humidification liquid 4 can be communicated with the external air path through the air flow inlet 16 and the air flow outlet 17; the tank 1 includes an insertion end and a holding end, and the insertion end can be inserted into the interior of the ventilator host; the humidification tank also includes a first end 21 and a holding end. The air inlet guide part 2 at the second end 22 has the first end 21 sealedly connected with the air flow inlet 16 and the second end 22 connected with the internal chamber 13; the air inlet guide part 2 includes a bend with at least two bending angles. The guide tube 23 is arranged such that the first end 21 and the second end 22 are located on opposite sides.

Specifically, as shown in FIGS. 4 and 5 , the first end 21 and the second end 22 are respectively located on the left and right sides of the air intake guide part 2 and also on the front and rear sides of the air intake guide part 2 .

It should be noted that the humidifying liquid 4 is preferably water, so that the user can easily replace it. Before use, the user can take municipal tap water or purified water into the tank, so that the air flow contacts the water during use to complete humidification. In order to save usage costs, users can easily replace or replenish the humidifying liquid 4.

Preferably, as shown in FIGS. 8 and 9 , the air inlet guide 2 is located above the humidifying liquid 4 , and the air inlet guide 2 and the humidifying liquid 4 are arranged up and down, so that the humidifying liquid 4 moves under its own gravity. Under this action, it is difficult for upward reverse flow to enter the air intake guide part 2 , thereby reducing the risk of backflow from the air flow inlet 16 .

Preferably, an opening is provided on one side of the main body of the ventilator. The insertion end of the tank 1 can extend into the main body through the opening, while the holding end is located outside the main body, thereby making it convenient for the user to directly install the tank 1 from one side of the main body. to the main unit, and the tank 1 can be directly removed from the main unit by holding the external holding end without disassembling the entire main unit, thereby reducing the difficulty of assembly and disassembly and improving the use experience.

When the humidification tank of the present application is used, the air flow blown by the blower enters the air inlet guide part 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. To be wetted by contact with the humidifying liquid 4, the air inlet guide part 2 includes a bent guide tube 23 with at least two bending angles, so that the flow path before the airflow comes into contact with the humidifying liquid 4 is longer and more tortuous. On the one hand, The whistling sound generated during the air flow is reduced, and the collision force between the air flow and the inner wall of the bending guide tube 23 is reduced, thereby reducing the noise generated by the collision. On the other hand, the tortuous air path also lengthens the path of sound waves, making it difficult for internal noise to spread to the outside. It has a better noise reduction and silencing effect and improves the user experience.

In addition, the humidified liquid 4 in the tank 1 can only flow backward to the air inlet 16 in the direction opposite to the air flow direction through the bending guide tube 23, and the bending guide tube 23 is bent and extended. Similarly, The path for liquid backflow to the air flow inlet 16 is also lengthened, thereby reducing the risk of backflow. Even if part of the liquid flows back from the second end 22 into the curved guide tube 23 , the liquid cannot flow directly to the first end 21 due to the obstruction of the meandering structure inside, which increases the difficulty of liquid flow. Moreover, the internal chamber 13 is an entire large-volume space used to hold humidified liquid. The number of chambers is single and the structure is simple. There is no complicated separation structure, which not only saves production and processing costs, but also facilitates user use, which greatly To reduce the difficulty of operation, the user only needs to fill the interior of the tank 1 with the humidifying liquid 4 before use.

It should be noted that this application does not limit the structure of the bending guide tube 23. For example, the bending guide tube 23 can extend in a Z-shape as a whole to form bending angles at two corners. Alternatively, the bent guide tube extends in an S-shape.

Specifically, in a preferred embodiment, as shown in FIG. 4 , the bending guide tube 23 includes a first section 231 , a second section 232 and a third section 233 connected in sequence. The first section 231 The third section 233 extends along the first direction, and the second section 232 extends along the opposite direction of the first direction.

When the airflow flows from the first section 231 to the second section 232, since the two sections extend in opposite directions, the airflow needs to be turned by approximately 180° here. Similarly, when entering the third section from the second section 232 At section 233, the airflow also needs to be turned by about 180°. 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 can complete two large-angle turns in the bending guide tube 23, thereby achieving better noise reduction. Noise canceling 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 sections can be arranged side by side, which helps to reduce the volume of the bending guide tube 23 and save the tank body 1 The space within the ventilator helps to miniaturize the ventilator and is more convenient for home use.

Preferably, as shown in Figure 4, arc-shaped transition sections 234 are 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 passes through The guidance of the arc-shaped transition section 234 softly and smoothly completes the transition between the two sections, improves the air flow efficiency, prevents turbulence in the air flow, and also reduces the violent collision between the air flow and the inner wall of the bent guide tube 23 The noise produced.

Specifically, as shown in FIG. 4 , the bent guide tube 23 includes an upper shell 237 and a lower shell 236 . The upper shell 237 and the lower shell 236 cooperate to form a channel for air flow to pass through. The air intake guide part 2 It also includes an air inlet pipe fixed on one side of the bent guide tube 23 , and the air inlet pipe surrounds at least part of the first section 231 . The upper shell 237 and the lower shell 236 can be fixedly connected by pasting, welding, snapping, screw fixing, etc. When detachably connected by snapping, screw fixing, etc., a sealing ring needs to be provided at the connection between the two. , to ensure the sealing of the air flow channel and prevent air leakage.

Further, as shown in Figures 4, 5, and 11, the first section 231, the second section 232, and the third section 233 are arranged side by side, and the third section 233 is positioned higher than the first section. 231 and/or the second section 232.

Specifically, as shown in FIG. 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 is provided between two adjacent sections. The partition plate 235 is used to reduce the space occupied by the bending guide tube 23 and leave a larger space in the internal chamber 13 for holding the humidifying liquid 4, thereby improving the humidification efficiency.

It can be understood that the air flow inlet 16 is connected with the first section 231, and the air flow flows through the first section 231, the second section 232 and the third section 233 in the bent guide tube 23 in sequence, and passes through the second section 231. End 22 enters the interior chamber 13 . The higher position of the third section 233 facilitates the installation of other flow guide structures at the second end 22 , that is, the outlet of the third section 233 , to improve the contact effect between the air flow and the humidifying liquid 4 . In the use state, the air intake guide part 2 is fixed above the internal chamber 13 , and the humidified liquid 4 is accumulated at the bottom of the internal chamber 13 under the action of gravity, and is located below the air intake guide part 2 . Therefore, by increasing the position of the third section 233, the space between the two can be increased under the premise that the liquid level of the humidifying liquid 4 is constant, thereby facilitating the arrangement of the flow guide structure. The flow guide structure or the second end 22 still has a gap between the liquid surface of the humidifying liquid 4, so that after the airflow enters the internal chamber 13, it contacts the surface of the humidifying liquid 4 without passing into the humidifying liquid 4. Below the surface, the probability of being immersed in the humidifying liquid 4 is reduced, thereby preventing the air flow from causing great disturbance to the humidifying liquid 4 and causing noise.

In a specific example, the heights of the first section 231, the second section 232, and the third section 233 increase in sequence. In another specific example, the first section 231 and the second section 232 have the same height, and the third section 233 has a height higher than the first section and the second section. In yet another specific example, the first section 231 is lower than the second section 232 , and the third section 233 has the same height as the second section 232 .

In addition, the third section 233 may extend horizontally, so that the overall height of the third section 233 is higher than the second section 232 and/or the first section 231 . In a preferred embodiment, as shown in FIGS. 5 to 7 , along the first direction, the height of the bottom of the third section 233 gradually decreases.

The height of the bottom of the third section 233 gradually decreases from the inlet to the outlet. On the one hand, the caliber at the outlet of the third section 233 is increased, the pressure is reduced, and the air flow velocity is appropriately reduced, thereby increasing the interaction between the air flow and the humidified liquid 4. The contact is softer, reducing the generation of noise, and the increase in caliber can increase the air flow out per unit time, allowing more air flow to enter the internal chamber 13 to contact the humidifying liquid 4 to complete humidification, and improve the humidification efficiency. On the other hand, on the counterflow path of the humidified liquid 4, the bottom of the third section 233 gradually increases, thereby increasing the difficulty of the counterflow of the humidified liquid 4, increasing the resistance of the humidified liquid 4 when it flows back, reducing the counterflow flow rate, and improving Anti-reflux effect.

In this embodiment, since the bottom of the third section 233 has an inclined extending structure, the third section 233 can be positioned overall higher than the first section 231 and/or the second section 232 , that is, the third section The lowest end of the bottom 233 is higher than the first section 231 and/or the second section 232 . It is also possible to make part of the third section 233 higher than the first section 231 and/or the second section 232. For example, the bottom end of the third section 233 is in contact with the first section 231 and/or the second section. The sections 232 are of equal height 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 .

Preferably, as shown in FIGS. 6 and 7 , the bottom wall of the third section 233 is provided with anti-backflow ribs 2331 protruding upward.

An anti-backflow convex rib 2331 is provided in the third section 233 to form a height difference in the third section 233 , so that when the humidified liquid 4 flows back along the third section 233 , it needs to cross the anti-reflux convex rib 2331 , while the liquid itself Under the action of gravity and the resistance of the forward flowing air flow in the third section 233, it is difficult for the humidified liquid 4 to flow upward past the anti-backflow ribs 2331, so that the humidified liquid that flows back into the third section 233 is protected from backflow. Due to the obstruction of the convex ribs 2331 , the reverse flow cannot continue into the second section 232 and is thus blocked in the third section 233 .

Specifically, as shown in FIG. 6 , in a specific example, the bottom of the third section 233 is divided into two parts along the extension direction. The wall thickness of the part close to the entrance of the third section 233 is thicker, and the wall thickness of the part close to the entrance of the third section 233 is thicker. The wall thickness of the outlet portion of the three sections 233 is relatively thin, so that a step surface is formed between the two portions to form the anti-backflow ribs 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 along the extending direction of the third section 233 gradually decreases, so that the third section 233 is stepped. It is arranged in a shape to form more steps to improve the anti-backflow effect.

In another specific example, as shown in FIG. 7 , a part 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 at.

As a preferred embodiment, the cross-sectional area change of the first section 231 and the second section 232, and/or the second section 232 and the third section 233 is less than 10%. In this embodiment, by limiting the changes in the cross-sectional area of the three sections, the entire air duct in the bending guide tube 23 is made more uniform, thereby ensuring a more uniform flow rate of the air flow, avoiding air flow turbulence and reducing the generation of noise.

Preferably, as shown in FIG. 4 , along the first direction, the width of the third section 233 gradually increases to increase the outlet of the third section 233 , increase the air flow entering the internal chamber 13 per unit time, and improve Air supply efficiency and humidification efficiency.

In a preferred embodiment of this implementation mode, as shown in FIGS. 4 to 7 , the air intake guide part 2 further includes a rectification part 25 disposed at the second end 22 , and the inlet of the rectification part 25 is connected with the air intake guide part 2 . The outlet of the flow part 2 is connected to each other, and the outlet of the rectifying part 25 is connected to the internal chamber 13 . The outlet of the rectifying part 25 is located lower than the inlet of the rectifying part 25 .

The air flow flowing out from the outlet of the third section 233 enters the internal chamber 13 through the rectification of the rectification part 25 and contacts the humidification liquid 4. The outlet position of the rectification part 25 is relatively low, so that the outflow position of the air flow is far away from the humidification liquid 4. The liquid level is closer, thereby ensuring that more airflow can contact the humidifying liquid 4 to complete humidification, improve the humidification effect, and reduce the probability that the airflow will directly flow out of the humidification tank for use by the user without being humidified.

Furthermore, as shown in FIGS. 5 to 8 , the outlet position of the rectifying part 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 part 25 , and the airflow can be deflected in the bending guide tube. The air flow flows in the space between the bottom of the rectifying section 23 and the liquid surface of the humidifying liquid 4 to reduce the flow resistance of the air flow and prevent the air flow from being blocked by the outer wall of the first section 231 after flowing out from the outlet of the rectifying section 25 to reduce the flow efficiency.

Specifically, as shown in FIG. 5 , the bent guide tube 23 extends downward to form a rectifying portion 25 at the end of the third section 233 , so that the airflow in the third section 233 is guided downward by the rectifying portion 25 . The flow enters the inner chamber 13 closer to the level of the humidifying liquid 4 . When the humidifying liquid 4 flows back, it needs to flow upward to enter the third section 233 through the rectification part 25, which further increases the difficulty of the humidifying liquid 4 flowing back and improves the anti-backflow effect.

Preferably, as shown in FIGS. 5 to 8 , the outlet of the rectification part 25 is configured so that the airflow enters the inner 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 rectification part 25 , it enters the internal chamber 13 in a flow direction different from the first direction through the rectification and guidance of the rectification part 25 , so that the airflow flows again at the rectification part 25 The steering further extends the air flow path and makes the air path more tortuous, further reducing the generation of noise.

In a preferred embodiment, as shown in FIGS. 5 to 7 , a liquid baffle 26 is provided on the lower side of the outlet of the rectifying part 25 , and the liquid baffle 26 extends toward the first end 21 and below the air inlet guide part 2 .

The liquid baffle 26 can block the outlet below the rectifying part 25 in the vertical direction, reducing the risk of the humidified liquid 4 splashing into the rectifying part 25 and then entering the bent guide tube 23 . At the same time, the liquid baffle 26 can also guide the direction of the airflow when it enters the internal chamber 13, so that the airflow can contact the humidified liquid 4 in a direction parallel or inclined to the liquid surface, and the gap between the airflow and the humidified liquid 4 can be reduced. The collision force reduces the noise and prevents the airflow from colliding with the humidified liquid 4 perpendicular to the liquid surface and disturbing the liquid to produce noise.

Further, as shown in FIGS. 5 to 8 , the liquid baffle 26 extends obliquely downward to form a flow guide slope on the surface of the liquid baffle 26 .

The diversion slope causes the airflow to contact the humidifying liquid 4 below in an inclined downward direction, which not only reduces the noise caused by the violent collision between the airflow and the humidifying liquid 4, but also allows the airflow regulated by the rectifying part 25 to pass through the liquid baffle. At 26 o'clock, it can be blown out more evenly, the contact area with the humidifying liquid 4 is larger, and the air flow and the humidifying liquid 4 can fully contact, ensuring the humidification efficiency and improving the air flow humidity. In addition, when the humidified liquid 4 below flows upward, due to the existence of the diversion slope, the humidified liquid 4 needs to overcome its own gravity to flow upward, thus reducing the risk of reverse flow. And under the guidance of the diversion slope, the humidified liquid flowing to the liquid baffle plate 26 will also flow back to the bottom under the action of gravity without accumulating on the liquid baffle plate 26 .

Of course, the liquid baffle 26 can also be extended horizontally to allow the airflow to enter the internal chamber 13 in a direction opposite to the first direction, which is not specifically limited here.

Preferably, as shown in FIGS. 4 , 6 , and 7 , the rectifying part 25 is provided with flow guide ribs 27 , and the flow guide ribs 27 extend in a curved manner to guide the fluid to flow toward the outlet of the rectification part 25 . The flow guide ribs 27 are convexly bent toward the inlet of the rectifying part 25, thereby forming a concave arc surface structure on the side facing the outlet of the rectifying part 25, which plays a role in protecting the airflow flowing thereto and the humidified liquid 4 that flows back here. The guiding effect causes the fluid to flow downward into the inner chamber 13.

Specifically, as shown in FIGS. 6 and 7 , a liquid baffle 26 is provided below the rectification part 25 , and the flow guide ribs 27 are provided on the upper side of the liquid baffle 26 .

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

After the airflow entering the internal chamber 13 contacts and is moistened with the humidifying liquid 4, it enters the air outlet guide part 3 through the third end 31, and flows out from the fourth end 32 through the airflow outlet 17, and then flows through the pipeline to the mask for the user. use. Specifically, as shown in FIGS. 4 and 11 , the air outlet guide part 3 is an air outlet pipe provided on one side of the air inlet guide part 2 . The first section 231, the second section 232, the third section 233 of the bending guide tube 23 and the air outlet pipe are arranged side by side in sequence.

Further, as shown in Figures 1 and 3, the humidification tank includes a base 11 and a cover 12 that can interlock with each other. The air flow inlet 16 and the air flow outlet 17 are provided on the cover 12 and extend to the internal chamber 13 to respectively form Air flow inlet mounting part and air flow outlet mounting part.

Preferably, as shown in Figure 1, the cover 12 and the base 11 cooperate to form an internal chamber 13. The space inside the cover 12 is used to install the air inlet guide 2 and the outlet guide 3, and the space inside the base 11 is used to install the air inlet guide 2 and the outlet guide 3. Used to hold humidified liquid 4. It can be understood 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 in the internal chamber 13, the cover 12 needs to be opened. At this time, the tank 1 is In the open state, add humidifying liquid 4 into the base 11. Once the liquid level is higher than the height of the base 11, the excess liquid will overflow the base 11. That is to say, in the normal working position (the humidification tank is placed at rest) (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, it is preferable that 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 the air inlet guide 2 and the air outlet. The flow guide part 3 flows out of enough installation space to prevent the two parts from immersing below the liquid level after closing the cover. 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, and the air inlet guide part 2 and the air outlet guide part 3 are provided in this space. Occupying a certain space, the liquid level of the humidifying liquid 4 rises. Therefore, the higher height can compensate for part of the space occupied by the air inlet guide part 2 and the air outlet guide part 3, so that the liquid level is lower than the second end 22 of the air inlet guide part 2, thereby preventing the humidification tank from being in an inverted state. Next, the humidified liquid 4 flows back from the air flow inlet 16 to the blower.

Preferably, as shown in Figure 1, a seal 14 is provided between the base 11 and the cover 12 to ensure the sealing inside the tank 1 after closing the cover and prevent the leakage of the humidified liquid 4 and air flow.

Further, as shown in Figures 1, 4, and 11, the air inlet guide part 2 and the air outlet guide part 3 are constructed as an integrated structure, and can be inserted into the air flow inlet mounting part and the air flow outlet mounting part respectively as a whole. Cooperate.

The air inlet guide part 2 and the air outlet guide part 3 are of an integrated structure and are plug-fitted with the tank body 1, so that they can be integrally installed inside the tank body 1 or removed from the tank body 1, making the humidification tank The air duct component inside can be installed or disassembled as an independent module, which reduces the difficulty of processing and assembly and improves assembly efficiency. At the same time, it is also convenient for users to clean the air inlet guide part 2 and the air outlet guide part 3. At the same time, after the air inlet guide part 2 and the air outlet guide part 3 are removed, the inside of the tank 1 becomes a complete cavity, thereby increasing the volume of the internal chamber 13 and allowing the user to put in more humidified liquid. 4. Improve humidification efficiency.

Further, as shown in Figures 1 and 3, the air flow inlet 16 and the air flow outlet 17 are located on the same side of the tank 1, which facilitates the connection of pipelines and optimizes the pipeline layout.

Preferably, as shown in Figures 1, 4, and 11, the air inlet guide part 2 or the air outlet guide part 3 is provided with a positioning structure, and the cover 12 is provided with a matching structure that cooperates with the positioning structure.

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 play a foolproof role, allowing the user to connect the air inlet guide part 2 and the air outlet guide part The flow part 3 is installed to the cover 12 in a correct posture, which reduces the difficulty of assembly and improves the convenience of use.

Specifically, as shown in Figures 1 and 11, the matching structure is a convex rib 121 provided on the cover 12, and the positioning structure is a groove 24 provided corresponding to the convex rib 121. The shapes of the two are the same or similar, so that the user can directly Learn the corresponding relationship between the two. Of course, the positioning structure can also be convex ribs, and correspondingly, the matching structure can be a groove, or the positioning structure and the matching structure can be other structures respectively, as long as they can cooperate to install the air inlet guide part 2 and the air outlet guide part 3 It only has a positioning function and is not limited here.

Preferably, as shown in Figure 2, the base 11 is also provided with a thermal conductive 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 air flow in the internal cavity 13 is not only humidified. Moreover, the temperature rises when heated, making the user's breathing more comfortable and improving the user experience.

The flow path when the airflow of the ventilator flows through the humidification tank of the present application is: the airflow blown by the blower enters the first end 21 of the air inlet guide part 2 through the airflow inlet 16, and then enters the bent guide tube 23, and ends at The inside of the bending guide tube 23 undergoes multiple turns, flowing through the first section 231, the second section 232 and the third section 233 in sequence. At the second end 22, it passes through the rectification of the rectification section 25 and the liquid baffle 26. It is guided obliquely downward into the internal chamber 13 to contact and moisten the humidifying liquid 4 below. 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 airflow outlet 17, and passes through the breathing tube. The road and mask flow to the user end and are used by the user.

By designing the air flow path inside the air inlet guide part 2 of the humidification tank of the present application, the humidification liquid 4 cannot flow to the first place when the humidification tank is rotated no more than 90 degrees from the working orientation to any direction. End 21, that is, the air outlet 16, especially for small-volume portable household ventilators, even if the user turns over during sleep or improper use causes the body to tip over, the humidified liquid 4 will not flow back, ensuring that Blower safety and service life.

Specifically, taking the extension direction of the first section 231, that is, the above-mentioned first direction as the main perspective, as an example, in the working orientation of the humidifier, as shown in Figure 9, the air inlet guide part 2 and the air outlet guide part 3 is located above the humidified liquid 4, with the air flow inlet 16 and the air flow outlet 17 facing the front side. The first end 21 of the air inlet guide 2 is located on the front side of the tank 1, and the second end 22 is located on the rear side of the tank 1. . At this time, the second end 22 of the air intake guide 2 is higher than the liquid level of the humidifying liquid 4, and the humidifying liquid 4 is in a lower position, with less risk of backflow.

When the humidification tank rotates forward 90°, as shown in Figures 10 and 11, the humidification liquid 4 is immersed in the air flow inlet 16 and the air flow outlet 17. Since the air flow inlet 16 and the first end 21 are sealed, the humidification liquid 4 is The humidifying liquid 4 will naturally not flow out from the air inlet 16. In this state, the second end 22 is located above and above the level of the humidifying liquid 4, so the humidifying liquid 4 cannot enter the air inlet diversion through the second end 22. In part 2, reverse flow cannot be achieved. Even if part of the humidified liquid 4 enters the bending guide tube 23 from the second end 22 due to sloshing, it will accumulate below. In the state shown in Figure 11, the bending guide tube 23 has multiple sections extending upward. Therefore, it will also form a barrier for the liquid entering the inside of the bent guide tube 23, so that it cannot reach the first end.

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 Higher than the liquid level of the humidifying liquid 4, this arrangement can ensure that when the humidifying tank is in this orientation, the humidifying liquid 4 cannot enter the second section 232 and the first section 231, even if the humidifying tank is reversed from this orientation. When the blower is rotated to the working position, the humidified liquid 4 cannot flow to the air flow inlet 16, further preventing the humidified liquid 4 from flowing back into the blower.

Preferably, as shown in Figure 11, the first end 21 and the second end 22 of the air inlet guide part 2 are respectively located on the left and right sides of the air inlet guide part 2, so that when the humidification tank rotates left and right, the first end 21 and the second end 22 of the air inlet guide part 2 are rotated left and right. End 21 and second end 22 are at different heights.

When the humidification tank is rotated 90° to the left, as shown in Figures 14 and 15, part of the second end 22 is submerged under the liquid level, and the first end 21 is higher than the liquid level, and the humidification liquid 4 is also unable to flow upward. to the first end 21, and since there is a partition plate 235 between the first section 231, the second section 232, and the third section 233, in this state, the space between the first section 231 and the second section 232 At least part of the partition plate is located above the liquid level, which can also prevent the humidified liquid 4 from flowing to the first end 21 .

When the humidification tank is rotated 90° to the right, as shown in Figures 16 and 17, the first end 21 is submerged below the liquid level, and part of the second end 22 is higher than the liquid level. Due to the air flow inlet 16 and the first The end 21 is sealed and connected, so the humidified liquid 4 will not flow out directly from the air flow inlet 16. At least part of the partition plate between the third section 233 and the second section 232 is located above the liquid level, so that the humidified liquid 4 will not flow out directly from the air flow inlet 16. The humidifying liquid 4 at the first end plays a blocking role, so the humidifying liquid 4 cannot flow to the first end 21 in the bent guide tube 23 .

In the above embodiment, the humidification tank is rotated 90 degrees in the four directions of front, back, left, and right as an example to illustrate the anti-backflow effect of the humidification tank in four flipped states. Of course, it is understandable that when the rotation angle of the humidification tank is less than 90°, it can also have a better anti-backflow effect. In addition, the humidification tank can also maintain a good anti-backflow effect when it is rotated in other directions, so I will not list them all here.

In addition, it should be noted that in extreme cases, the posture of the humidification tank of the present application can be adjusted artificially and intentionally, and it is possible for the humidification liquid inside to flow backward from the air flow inlet 16, for example, through collision or rapid and/or Or turn the humidification tank repeatedly. However, during the actual use of the ventilator, if the user finds that the ventilator body has tipped over, he should adjust its posture in time to restore its normal working orientation. Therefore, this application mainly solves the common problem of backflow of humidified liquid when the humidification tank is tilted or turned over in actual use. It cannot completely avoid the backflow of humidified liquid caused by artificially swinging the humidification tank.

Places not mentioned in this application can be realized by adopting or drawing on existing technologies.

Each embodiment in this specification is described in a progressive manner. The same and similar parts between the various embodiments can be referred to each other. Each embodiment focuses on its differences from other embodiments.

The above descriptions are only examples of the present application and are not intended to limit the present application. To those skilled in the art, various modifications and variations may be made to this application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the scope of the claims of this application.

Claims (17)

1. A ventilator humidification tank comprising a tank body provided with an airflow inlet and an airflow outlet, and an interior chamber configured to hold a humidification liquid and to be communicable with an external air circuit through the airflow inlet and the airflow outlet; it is characterized in that the method comprises the steps of,

the tank body comprises an insertion end and a holding end, and the insertion end can be inserted into the main machine of the breathing machine; the humidification tank further comprises an air inlet diversion portion having a first end and a second end, the first end is in sealing connection with the air flow inlet, and the second end is communicated with the internal chamber; the air inlet guide part comprises a bent guide pipe with at least two bent angles, so that the first end and the second end are positioned on two opposite sides.

2. The ventilator humidification canister of claim 1, wherein,

the bent honeycomb duct comprises a first section, a second section and a third section which are sequentially connected, wherein the first section and the third section extend along a first direction, and the second section extends along the reverse direction of the first direction.

3. The ventilator humidification canister of claim 2, wherein,

the first section, the second section and the third section are arranged side by side and the position of the third section is higher than that of the first section and/or the second section.

4. A ventilator humidification canister according to claim 3, wherein,

the height of the third section bottom gradually decreases along the first direction.

5. A ventilator humidification canister according to claim 2 or 4, wherein,

the bottom wall of the third section is provided with an anti-backflow convex rib protruding upwards.

6. The ventilator humidification canister of claim 2, wherein,

the first and second sections, and/or the second and third sections, have a cross-sectional area that varies by less than 10%.

7. The ventilator humidification canister of claim 2, wherein,

The width of the third section gradually becomes larger along the first direction.

8. The ventilator humidification canister of claim 2, wherein,

the inlet guide part further comprises a rectifying part arranged at the second end, an inlet of the rectifying part is communicated with an outlet of the inlet guide part, an outlet of the rectifying part is communicated with the inner cavity, and the position of the outlet of the rectifying part is lower than that of the inlet of the rectifying part.

9. The ventilator humidification canister of claim 8, wherein,

the exit position of the rectifying portion is lower than the first section position.

10. The ventilator humidification canister of claim 8, wherein,

the outlet of the rectifying portion is configured such that the airflow enters the interior chamber in a direction different from the first direction.

11. The ventilator humidification canister of claim 8, wherein,

the outlet downside of rectification portion is equipped with the fender liquid board, the fender liquid board orientation first end extends to intake water conservancy diversion below.

12. The ventilator humidification canister of claim 11, wherein,

the liquid baffle plate extends obliquely downwards so as to form a diversion inclined plane on the surface of the liquid baffle plate.

13. The ventilator humidification canister of claim 8, wherein,

the rectifying part is provided with a flow guide rib which is bent and extended to guide fluid to flow towards an outlet of the rectifying part.

14. The ventilator humidification canister of claim 1, wherein,

the humidifying tank further comprises an air outlet flow guide part with a third end and a fourth end, wherein the third end is communicated with the inner cavity, and the fourth end is in sealing connection with the air flow outlet.

15. The ventilator humidification canister of claim 14, wherein,

the humidifying tank comprises a base and a cover body which can be mutually buckled, and the air flow inlet and the air flow outlet are arranged on the cover body and extend towards the inner cavity to form an air flow inlet installation part and an air flow outlet installation part respectively.

16. The ventilator humidification tank of claim 15, wherein,

the air inlet guide part and the air outlet guide part are constructed into an integral structure and can be respectively in plug-in fit with the air inlet installation part and the air outlet installation part as a whole.

17. The ventilator humidification tank of claim 16, wherein,

The air inlet guide part or the air outlet guide part is provided with a positioning structure, and the cover body is provided with a matching structure matched with the positioning structure.