A humidification tank

Abstract

The application discloses a humidification tank, which comprises a humidification tank body, an air inlet pipe and an air outlet arranged on the humidification tank body, and the air inlet pipe comprises an air inlet end and an air outlet end, the lower part of the air inlet end of the air inlet pipe is higher than the lower part of the air outlet end in the horizontal direction, the length of the air inlet pipe is greater than or equal to half of the length of the humidification tank body in the direction of the air inlet pipe, or the length of the air inlet pipe is greater than the shortest length from the air outlet to the wall where the air inlet pipe is arranged, so that the liquid in the humidification tank can flow back into the humidification tank through the inclined arrangement of the air inlet pipe when water in the air inlet pipe is condensed by evaporation, and the liquid in the humidification tank will not enter the air inlet pipe when the humidification tank is tilted, when the humidification tank is overturned, the length from the air outlet to the wall where the air inlet pipe is arranged is greater than the length of the air inlet pipe, and when the humidification tank is turned to a certain angle, water flow will flow out through the air outlet first and will not enter the air inlet pipe, so that the liquid is also prevented from flowing into the host of the respiratory treatment equipment, and 360-degree anti-overflow is realized. The through cavity can greatly reduce air flow resistance and improve air flow output efficiency.

Description

Technical Field

[0001] This invention relates to a humidifier for an inhalable gas supply device, and more particularly to a humidifier with an anti-backflow function, belonging to the field of medical devices. Background Technology

[0002] Devices used for continuous positive airway pressure (CPAP) therapy typically include a blower whose outlet is connected to a mask via a breathing tube, exchanging air with the patient. Warmed and humidified air is generally more comfortable and acceptable to patients. Therefore, most current ventilation therapy devices include a humidifier.

[0003] Typically, the blower and humidifier are separate components connected by a flexible hose. The humidifier is usually located between the blower's air outlet and the patient interface, and typically includes a humidification tank and a heating device. The humidification tank has an air inlet connected to the blower's air outlet and an air outlet connected to the user interface. A certain amount of water is added to the humidification tank. The air entering the humidification tank from the blower is humidified by contact with the water and the heating system of the heating device before entering the patient interface.

[0004] Some ventilation therapy devices, for portability, combine a blower and a humidifier. Air flows from the blower outlet into the humidifier's humidification tank inlet, where it is humidified before exiting the humidifier outlet and entering the breathing tubing, ultimately reaching the patient interface (e.g., the mask end). This design presents a potential problem: when the humidifier tilts relative to its normal orientation, preventing water from flowing into the blower and causing damage, or even harm to the entire device, is a challenge that requires further investigation.

[0005] In existing technologies, there are generally two methods to address the issue of water overflowing from the humidification tank back to the blower through structural design. One method is to add an independent chamber to isolate the direct path between the water and the blower's air outlet, such as... Figure 1 As shown; another method is to add baffles and lower the water level, so that the water level is much lower than the blower outlet height, such as... Figure 2 As shown, a passive enhanced humidification system is added to the heating and humidification system, which includes heat and moisture exchange materials, heating plates, and insulation plates. All of the above methods, in order to achieve anti-overflow and humidity control, not only have complex structures and high impedance, reducing the airflow output efficiency of the ventilation therapy equipment, but also significantly increase the power of heating and humidification. Therefore, how to design a humidification tank with a low-impedance anti-overflow structure that is easy for users to clean and operate is a challenge in this field. Summary of the Invention

[0006] This invention provides a humidification chamber that achieves 360° anti-overflow through the structural design of the air inlet and the relative positions of the air inlet and outlet, thereby improving the user's fault tolerance and reducing the probability of damage to respiratory therapy equipment during use.

[0007] A humidification tank includes a humidification tank body and an air inlet pipe and an air outlet disposed on the humidification tank body. The air inlet pipe includes an air inlet end and an air outlet end. The lower part of the air inlet end of the air inlet pipe is higher than the lower part of the air outlet end in the horizontal direction. The length of the air inlet pipe is greater than or equal to half the length of the air inlet pipe of the humidification tank body in the direction of the air inlet pipe, or the length of the air inlet pipe is greater than or equal to the shortest length from the air outlet to the wall where the air inlet pipe is located.

[0008] Preferably, the upper end face of the air inlet pipe is longer than or equal to the lower end face in the horizontal direction.

[0009] Preferably, the air outlet end of the air inlet pipe is also provided with an anti-backflow device, which is a baffle plate installed at the air outlet end.

[0010] Preferably, a drainage device is provided on the wall of the air intake pipe.

[0011] Preferably, the drainage device includes multiple drainage channels with different depths.

[0012] Preferably, the drainage device includes multiple drainage ribs, and the multiple drainage ribs have different heights.

[0013] Preferably, the flow guiding device includes a flow guiding groove and a flow guiding rib, and the flow guiding rib is disposed at the air outlet end of the air inlet pipe.

[0014] Preferably, the lower end face of the air intake pipe is inclined downward from the air intake end to the air outlet end, and the angle between it and the horizontal direction is greater than or equal to 3°.

[0015] Preferably, the humidification tank body is provided with an airflow guide platform at the air inlet end of the air inlet pipe.

[0016] Preferably, the humidification tank body has a groove at the air outlet, the air outlet is located in the groove, and a water storage area is formed between the groove and the humidification tank body. The humidification tank body is also provided with a drain hole, and a sealing plug is detachably installed in the drain hole. The drain hole is located on the side wall of the water storage area of ​​the humidification tank body.

[0017] Preferably, the humidification tank further includes a humidification tank cover, the air outlet is disposed on the humidification tank cover, the humidification tank cover is detachably connected to the humidification tank body and keeps the humidification tank cover and the humidification tank body sealed during use.

[0018] Preferably, the humidification tank cover includes a cover body and a cover body seal disposed around the cover body, the cover body seal being connected to the humidification tank body and maintaining the humidification tank in a sealed manner.

[0019] Preferably, the air outlet further includes a diaphragm disposed in the inner ring of the air outlet. The diaphragm includes one or more membrane flaps, which are fixedly connected to the inner ring of the air outlet and can be folded along the inner ring of the air outlet.

[0020] Preferably, the humidification tank body includes a first humidification tank body and a second humidification tank body, and the first humidification tank body and the second humidification tank body are sealed together.

[0021] Preferably, the humidification tank body is also provided with a heat-conducting element, the connection between the humidification tank body and the heat-conducting element is hollow, and a waterproof sealing ring is also provided between the humidification tank body and the heat-conducting element.

[0022] The humidification tank provided by this invention has an air inlet end that is horizontally higher than the air outlet end. This allows water condensed in the air inlet pipe after evaporation to flow back into the humidification tank due to the tilted design of the air inlet pipe, preventing it from flowing into the main unit of the respiratory therapy device and causing malfunction. Furthermore, the length of the air inlet pipe is greater than or equal to half the length of the main body of the humidification tank in the direction of the air inlet pipe, or the length of the air inlet pipe is greater than the shortest length from the air outlet to the wall where the air inlet pipe is located. When the tank is tilted, the liquid inside will not enter the air inlet pipe. When tipped over, because the length from the air outlet to the wall where the air inlet pipe is located is less than or equal to the length of the air inlet pipe, after being flipped to a certain angle, the water will preferentially flow out through the air outlet and not through the air inlet pipe, again ensuring that the liquid does not flow into the main unit of the respiratory therapy device, thus achieving 360° anti-overflow. Additionally, the humidification tank of this invention uses a through-chamber design, which can greatly reduce airflow resistance and improve airflow output efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an independent chamber humidification tank in the prior art;

[0024] Figure 2 A schematic diagram of a humidification tank in the prior art with added baffles and a lowered water level.

[0025] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 4 This is a cross-sectional view of Embodiment 1 of the present invention;

[0027] Figure 5 This is a cross-sectional view of Embodiment 2 of the present invention;

[0028] Figure 6This is a cross-sectional view of Embodiment 3 of the present invention;

[0029] Figure 7 This is a cross-sectional view of Embodiment 4 of the present invention;

[0030] Figure 8 This is a cross-sectional view of Embodiment 5 of the present invention;

[0031] Figure 9 This is a schematic diagram of the intake pipe angle structure in Embodiment Six of the present invention;

[0032] Figure 10 This is a schematic diagram of the intake pipe length structure in Embodiment 7 of the present invention;

[0033] Figure 11 This is a schematic diagram of the groove structure in Embodiment 8 of the present invention;

[0034] Figure 12 This is a schematic cross-sectional view of the groove structure in Embodiment 8 of the present invention;

[0035] Figure 13 This is a schematic diagram of the humidification tank lid structure in Embodiment 9 of the present invention;

[0036] Figure 14 This is a schematic diagram of the thermal conductive element structure in Embodiment 10 of the present invention;

[0037] Figure 15 This is a schematic diagram of the intake pipe anti-reverse device in Embodiment Eleven of the present invention;

[0038] Figure 16 This is a schematic diagram of the intake pipe drainage device in Embodiment Twelve of the present invention;

[0039] Figure 17 This is a schematic diagram of the intake pipe drainage device according to Embodiment Thirteen of the present invention;

[0040] Figure 18 This is a schematic diagram of the intake pipe drainage device in Embodiment Fourteen of the present invention;

[0041] Figure 19 This is a schematic diagram of the gas diversion platform structure of the intake pipe in Embodiment 15 of the present invention;

[0042] Figure 20 This is a schematic diagram of the membrane position in Embodiment Sixteen of the present invention.

[0043] Figure 21 This is a schematic diagram of the membrane structure in Embodiment Sixteen of the present invention;

[0044] Figure 22 This is a schematic diagram of the structure exploded in Embodiment Seventeen of the present invention.

[0045] Figure 23 This is an exploded view of the structure in Embodiment 18 of the present invention;

[0046] Figure 24 This is an exploded view of the structure of Embodiment Nineteen of the present invention;

[0047] Figure 25 This is a graph showing the pressure loss curves of the humidification tank device of the present invention and the conventional humidification tank at different flow rates.

[0048] Figure 26 This is a schematic diagram of the humidification tank of the present invention in its assembled state with a respiratory therapy device;

[0049] Figure 27 This is a schematic diagram of the humidification tank of the present invention in its assembled state with a respiratory therapy device;

[0050] List of reference numerals in the attached diagram:

[0051] 1-Humidification tank body, 2-Inlet pipe, 21-Inlet end, 22-Outlet end, 221-Upper end face, 222-Lower end face, 223-Anti-backflow device, 23-Drainage device, 231-Drainage rib, 232-Drainage groove, 212-Airflow drainage platform, 3-Outlet, 4-Humidification tank cover, 41-Cover body, 42-Cover body seal, 5-Groove, 51-Water storage area, 31-Diaphragm, 311-First diaphragm flap, 312-Second diaphragm flap, 313-Third diaphragm flap, 314-Fourth diaphragm flap, 11-First humidification tank body, 12-Second humidification tank body, 6-Heat-conducting element, 61-Waterproof sealing ring, 7-Drain hole, 71-Sealing plug, 8-Outlet bend. Detailed Implementation

[0052] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0053] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0054] Example 1:

[0055] Figure 3-4This is a schematic diagram of the structure of a humidification tank according to an embodiment of the present invention. A humidification tank includes a humidification tank body 1, which includes a accommodating cavity for holding humidifying liquid. The humidification tank body 1 also includes an air outlet 3 disposed on the top wall of the accommodating cavity 1 and an air inlet pipe 2 disposed on a side wall of the accommodating cavity. The air inlet pipe 2 has an air inlet end 21 and an air outlet end 22. The lower part of the air inlet end 21 is higher than the lower part of the air outlet end 22 in the horizontal direction, so that the air inlet pipe 2 has a downward trend as a whole in the humidification tank body 1. The length of the air inlet pipe 2 is greater than or equal to half the length of the air inlet pipe 2 in the direction of the humidification tank body 1, that is, the air outlet end 22 of the air inlet pipe 2 is located in the middle of the humidification tank body 1, and the air outlet 3 is disposed above the air outlet end 22. The length of the air inlet pipe 2 is equal to the length from the air outlet 3 to the wall where the air inlet pipe 2 is located.

[0056] Example 2:

[0057] Figure 5 This is a schematic diagram of the structure of a second embodiment of the humidification tank of the present invention. A humidification tank includes a humidification tank body 1, which includes a accommodating cavity for holding humidification liquid. The humidification tank body 1 also includes an air outlet 3 disposed on the top wall of the accommodating cavity 1 and an air inlet pipe 2 disposed on a side wall of the accommodating cavity. The air inlet pipe 2 has an air inlet end 21 and an air outlet end 22. The lower part of the air inlet end 21 is higher than the lower part of the air outlet end 22 in the horizontal direction, so that the air inlet pipe 2 has a downward trend as a whole in the humidification tank body 1. The length of the air inlet pipe 2 is greater than or equal to half the length of the air inlet pipe 2 in the direction of the humidification tank body 1, that is, the air outlet end 22 of the air inlet pipe 2 is located in the middle position of the humidification tank body 1. The air outlet 3 is disposed above the pipe body of the air inlet pipe 2, that is, the length of the air inlet pipe 2 is greater than the length from the air outlet 3 to the wall where the air inlet pipe 2 is located.

[0058] Example 3:

[0059] Figure 6 This is a schematic diagram of the structure of a humidification tank according to a third embodiment of the present invention. A humidification tank includes a humidification tank body 1, which includes a accommodating cavity for holding humidification liquid. The humidification tank body 1 also includes an air outlet 3 disposed on the top wall of the accommodating cavity 1 and an air inlet pipe 2 disposed on one side wall of the accommodating cavity. The air inlet pipe 2 has an air inlet end 21 and an air outlet end 22. The lower part of the air inlet end 21 is higher than the lower part of the air outlet end 22 in the horizontal direction, so that the air inlet pipe 2 has a downward trend as a whole in the humidification tank body 1. The length of the air inlet pipe 2 is greater than or equal to half the length of the air inlet pipe 2 in the humidification tank body 1, that is, the air outlet end 22 of the air inlet pipe 2 is located in the middle of the humidification tank body 1. The air outlet 3 is disposed on the side away from the wall where the air inlet pipe 2 is located. That is, when the length of the air inlet pipe 2 is greater than or equal to half the length of the humidification tank body 1, the length from the air outlet 3 to the wall where the air inlet pipe 2 is located can be greater than the length of the air inlet pipe 2.

[0060] Example 4:

[0061] Figure 7 This is a schematic diagram of the structure of a humidification tank according to a fourth embodiment of the present invention. A humidification tank includes a humidification tank body 1, which includes a accommodating cavity for holding humidification liquid. The humidification tank body 1 also includes an air outlet 3 disposed on the top wall of the accommodating cavity 1 and an air inlet pipe 2 disposed on one side wall of the accommodating cavity. The air inlet pipe 2 has an air inlet end 21 and an air outlet end 22. The lower part of the air inlet end 21 is higher than the lower part of the air outlet end 22 in the horizontal direction, so that the air inlet pipe 2 is generally downward in the humidification tank body 1. The air outlet 3 is disposed on the side of the wall where the air inlet pipe 2 is located, and the length of the air inlet pipe 2 is greater than the length from the air outlet 3 to the wall where the air inlet pipe 2 is located.

[0062] Example 5:

[0063] Figure 8 This is a schematic diagram of the structure of a humidification tank according to a fifth embodiment of the present invention. A humidification tank includes a humidification tank body 1, which includes a accommodating cavity for holding humidification liquid. The humidification tank body 1 also includes an air outlet 3 disposed on the top wall of the accommodating cavity 1 and an air inlet pipe 2 disposed on a side wall of the accommodating cavity. The air inlet pipe 2 has an air inlet end 21 and an air outlet end 22. The lower part of the air inlet end 21 is higher than the lower part of the air outlet end 22 in the horizontal direction, so that the air inlet pipe 2 is generally downward within the humidification tank body 1. The length of the air inlet pipe 2 is greater than half of the humidification tank body 1, and the air outlet 3 is disposed on the pipe wall of the air inlet pipe 2.

[0064] In the above five embodiments, the gas provided by the respiratory therapy device enters the humidification tank body 1 through the air inlet pipe 2. The air flow speed drives the liquid in the humidification tank body 1, thereby increasing the humidity of the air. Then, the gas reaches the user end through the air outlet 3, achieving the purpose of humidifying the gas of the respiratory therapy device.

[0065] The lower part of the air inlet end 21 of the air inlet pipe 2 is higher than the lower part of the air outlet end in the horizontal direction. This allows the water that evaporates and condenses in the air inlet pipe 2 to flow back into the humidification tank body 1 through the inclined design of the air inlet pipe 2, thus preventing it from flowing into the main unit of the respiratory therapy device and causing malfunction. Simultaneously, the length of the air inlet pipe 2 is greater than or equal to half the length of the air inlet pipe 2 in the humidification tank body 1, or the length of the air inlet pipe 2 is greater than the shortest length from the air outlet 3 to the wall where the air inlet pipe 2 is located. When the humidification tank body 1 is tilted, the liquid will not enter the air inlet pipe 2. When tipped over, because the length from the air outlet 3 to the wall where the air inlet pipe 2 is located is less than or equal to the length of the air inlet pipe 2, after being flipped to a certain angle, the water will preferentially flow out through the air outlet 3 and not through the air inlet pipe 2, again ensuring that the liquid will not flow into the main unit of the respiratory therapy device, thereby achieving 360° anti-overflow. Furthermore, the humidification tank body 1 of this invention uses a through-chamber design, which can greatly reduce airflow resistance and improve airflow output efficiency.

[0066] Example 6:

[0067] Improvements can be made based on any one of the five embodiments, such as... Figure 9 As shown, the angle between the air inlet pipe 2 and the horizontal direction is greater than or equal to 3°, so that the condensate in the air inlet pipe 2 flows better into the humidification tank body 1 and does not flow into the main unit of the respiratory therapy device.

[0068] Example 7:

[0069] Improvements can be made based on any one of the five embodiments, such as... Figure 10 As shown, the air outlet 22 of the air inlet pipe 2 is in the horizontal direction, with the upper end face 221 being longer than or equal to the lower end face 222, and the lower end face 222 being shorter than the upper end face 221. When adding water to the humidification tank body 1, water is less likely to enter the air inlet pipe 2.

[0070] Example 8:

[0071] Improvements can be made based on any one of the five embodiments, such as... Figure 11-12As shown, the humidification tank body 1 has a groove 5 at the air outlet 2, and the air outlet 3 is located in the groove 5. The groove 5 is set towards the interior of the humidification tank body 1, and the step of the groove 5 and the surface of the humidification tank body 1 form a water storage area 51. In extreme cases, if the humidification tank body 1 is inverted, a small amount of water will remain in the water storage area 51 and will not flow directly out of the air outlet 3 or the air inlet pipe 2. Therefore, even in extreme cases, this humidification tank structure can still ensure machine safety. Preferably, the groove 5 is a U-shaped groove, which can cooperate with the air outlet bend 8 at the main unit end to fix the main unit and the humidification tank. Because of the groove 5, water is not easily drained in situations where the liquid in the humidification tank body needs to be completely drained. Therefore, a drain hole 7 is also provided on the humidification tank body 1. A sealing plug 71 is detachably installed in the drain hole 7. The drain hole 7 is located on the side wall of the water storage area 51. During normal use, the sealing plug 71 ensures the sealing of the humidification tank. When drainage is required, the sealing plug 71 is removed, the humidification tank body 1 is inverted, and the liquid will drain out through the drain hole 7. This solves the problem of liquid storage in the humidification tank under extreme conditions and prevents backflow.

[0072] Example 9:

[0073] Improvements can be made based on any one of the five embodiments, such as... Figure 13 As shown, the humidifier tank also includes a humidifier tank cover 4, with an air outlet 3 disposed on the humidifier tank cover 4. The humidifier tank cover 4 is detachably connected to the humidifier tank body 1 and maintains a seal between the humidifier tank cover 4 and the humidifier tank body 1 during use. The humidifier tank cover 4 includes a cover body 41 and a cover body seal 42 disposed around the cover body 41. The cover body seal 42 is connected to the humidifier tank body 1 and maintains a seal in the humidifier tank. The humidifier tank cover 4 increases the opening of the humidifier tank. The detachable connection between the humidifier tank cover 4 and the humidifier tank body 1, along with the large opening, facilitates water addition and cleaning operations when the user needs to add water or clean the humidifier tank, allowing for repeated use of the humidifier tank and reducing operating costs.

[0074] Example 10:

[0075] Improvements can be made based on any one of the five embodiments, such as... Figure 14 As shown, a heat-conducting element 6 is also provided on the humidification tank body 1. The connection between the humidification tank body 1 and the heat-conducting element 6 is hollow, and a waterproof sealing ring 61 is also provided between the humidification tank body 1 and the heat-conducting element 6. The heating component of the respiratory therapy device heats the heat-conducting element 6, increasing the amount of liquid evaporation in the humidification tank body 1, thereby increasing the humidification therapy effect of the respiratory therapy device. At the same time, heating can raise the gas temperature of the respiratory therapy device, improving the user experience.

[0076] Example 11:

[0077] Improvements can be made based on any one of the five embodiments, such as... Figure 15 As shown, the outlet end 22 is also equipped with an anti-backflow device 223, which is a baffle plate installed at the outlet end 22. Because water has a certain surface tension and adhesion, during the process of adding water to the humidification tank, water may flow along the upper edge of the humidification tank inlet pipe to the inlet pipe 2. Therefore, by setting up a baffle plate, water can be effectively prevented from overflowing through the inlet pipe 2 during the process of adding water, thereby protecting the respiratory therapy equipment.

[0078] Example 12:

[0079] Improvements can be made based on any one of the five embodiments, such as... Figure 16 As shown, a drainage device 23 is installed on the wall of the air inlet pipe 2. The drainage device 23 is a drainage channel 232. There are multiple drainage channels 232, and the width and depth of the multiple drainage channels 232 are different. Through the drainage channels 232, during the water addition process, the water poured on the wall of the air inlet pipe 2 is directly guided to the bottom of the air inlet pipe 2, so that it will not flow down the slope of the air inlet pipe 2 to the air outlet 22. This prevents the water from flowing into the respiratory therapy equipment along the air outlet 22 of the air inlet pipe 2 during the water addition process, thus protecting the respiratory therapy equipment. Multiple drainage channels 232 can solve the problem that the water flow can still pass through a single drainage channel 232 even when the water flow is too large. The different widths and depths of the drainage channels 232 can cope with liquids with different tensions, making the application range wider.

[0080] Example 13:

[0081] Improvements can be made based on any one of the five embodiments, such as... Figure 17 As shown, a drainage device 23 is provided on the wall of the air inlet pipe 2. The drainage device 23 is a drainage rib 231. There are multiple drainage ribs 231, and the width and height of the multiple drainage ribs 231 are different. The drainage ribs 231 are protruding on the wall of the air inlet pipe 2, so that during the water addition process, the water flows along the slope of the air inlet pipe 2 towards the air outlet of the air inlet pipe 2. However, after encountering the drainage ribs 231, the water flows directly downward. The drainage ribs 231 play two roles: first, to guide the water flow directly downward, and second, to prevent the water flow to the air outlet 22, thereby preventing the water flow from entering the main unit of the respiratory therapy equipment through the air inlet pipe 2 and protecting the main unit.

[0082] Example 14:

[0083] Improvements can be made based on any one of the five embodiments, such as... Figure 18As shown, a drainage device 23 is provided on the wall of the air inlet pipe 2. The drainage device 23 includes a drainage rib 231 and a drainage groove 232. The drainage rib 231 is located at the air outlet end 22 of the air inlet pipe 2, and the drainage groove 232 is located on the wall of the air inlet pipe 2. The drainage groove 232 can guide the water flow directly downward. The drainage rib 231 can block the water flow from passing over the drainage rib 231 at the air outlet end 22 and flowing towards the air outlet end 22, thereby preventing the water flow from entering the main unit of the respiratory therapy equipment through the air inlet pipe 2 and protecting the main unit.

[0084] Example 15:

[0085] Improvements can be made based on any one of the five embodiments, such as... Figure 19 As shown, the humidifier body 1 is equipped with an airflow guide platform 212 at the air inlet end 21 of the air inlet pipe 2. Because the air inlet pipe 2 is inclined downward, the water storage space of the humidifier must be lower than the lowest point of the air outlet end 22 of the air inlet pipe 2. Therefore, in order to increase the water storage space of the humidifier, the air inlet pipe 2 needs to be set at a relatively high position of the humidifier. At the same time, the air inlet pipe 2 is set into a flat oval shape, which can maximize the water storage space of the humidifier. For respiratory therapy equipment, the air duct of the fan is relatively fixed, and the air outlet of the main unit is generally set in the middle position. The airflow guide platform 212 can effectively solve the problem of the air outlet of the main unit not corresponding to the air inlet of the humidifier.

[0086] Example 16:

[0087] Improvements can be made based on any one of the five embodiments, such as... Figure 20-21 As shown, the humidification tank also includes a diaphragm 31 disposed in the air outlet 3. The diaphragm 31 includes four membrane flaps: a first membrane flap 311, a second membrane flap 312, a third membrane flap 313, and a fourth membrane flap 314, which are fixedly connected to the inner ring of the air outlet 3. The membrane flaps can fold along the inner ring of the air outlet 3. When the user is using the device, the air outlet bend 8 at the user end can be inserted into the air outlet 3. The air outlet bend 8 causes the membrane flaps of the air outlet 3 to fold, opening the gas passage. When the air outlet bend 8 is pulled out, the diaphragm returns to its original position to prevent foreign objects from falling in and to provide the user with certain usage guidance. Water should not be added when the diaphragm is sealed.

[0088] Example 17:

[0089] Improvements can be made based on any one of the five embodiments, such as... Figure 22As shown, the humidification tank body 1 includes a first humidification tank body 11 and a second humidification tank body 12. The first humidification tank body 11 and the second humidification tank body 12 are sealed together. The first humidification tank body 11 is the lower humidification tank body, and the second humidification tank body 12 is the upper humidification tank body. The upper and lower humidification tank bodies are sealed and fixed by ultrasonic welding, glue, or other methods. Using a spliced ​​humidification tank body design facilitates mold processing and saves processing costs.

[0090] Example 18:

[0091] Improvements can be made based on any one of the five embodiments, such as... Figure 23 As shown, the humidification tank body 1 includes a first humidification tank body 11 and a second humidification tank body 12. The first humidification tank body 11 and the second humidification tank body 12 are sealed together. The first humidification tank body 11 is the left humidification tank body, and the second humidification tank body 12 is the right humidification tank body. The left and right humidification tank bodies are sealed and fixed by ultrasonic welding, glue, or other methods. Using a spliced ​​humidification tank body design facilitates mold processing and saves processing costs.

[0092] Example 19:

[0093] Improvements can be made based on any one of the five embodiments, such as... Figure 24 As shown, the humidification tank body 1 includes a first humidification tank body 11 and a second humidification tank body 12. The first humidification tank body 11 and the second humidification tank body 12 are sealed together. The first humidification tank body 11 is the main component of the humidification tank, and the second humidification tank body 12 is the end cap. The main component of the humidification tank and the end cap are sealed and fixed by ultrasonic welding, glue, or other methods. Using a spliced ​​humidification tank body allows for easier mold processing and saves processing costs. This method avoids defects and leaks caused by the splicing process of the humidification tank body. Since the end cap is on the outside of the respiratory therapy equipment, even if leakage occurs, it will not affect the main unit of the respiratory therapy equipment.

[0094] Figure 25 The graph shows the pressure loss curves of the humidification tank device of the present invention and the conventional humidification tank at different flow rates. As can be seen from the graph, the pressure loss curve of the present invention is significantly better than that of the humidification tank of the prior art.

[0095] Figure 26-27 This is a schematic diagram of the assembly of the humidification tank and respiratory therapy equipment of the present invention.

[0096] The above description is merely a preferred embodiment of the present invention and does not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A humidification tank, comprising a humidification tank body and an air inlet disposed on the humidification tank body, wherein an air inlet pipe is connected to the air inlet, and the air inlet pipe includes an air inlet end and an air outlet end, characterized in that: The humidification tank body forms a receiving chamber. The air inlet is located on the side wall of the humidification tank body. One end of the air inlet pipe is connected to the air inlet, and the other end extends into the receiving chamber. The lower part of the air inlet end of the air inlet pipe is higher than the lower part of the air outlet end in the horizontal direction. The length of the air inlet pipe is greater than or equal to the shortest length from the air outlet to the wall where the air inlet pipe is located. The humidification tank also includes a humidification tank cover, the air outlet is provided on the humidification tank cover, the humidification tank cover is detachably connected to the humidification tank body and keeps the humidification tank cover and the humidification tank body sealed during use; The top wall of the humidification tank body is provided with an installation port, the humidification tank cover is detachably connected to the installation port, and an exhaust bend is detachably connected to the air outlet. The bottom end of the exhaust bend is higher than the top end of the air outlet of the air inlet pipe. At least part of the exhaust bend extends to the outside of the humidification tank body. The humidification tank can be installed on the main unit, and the exhaust bend can fix the humidification tank and the main unit.

2. The humidification tank according to claim 1, characterized in that: The air outlet end of the air inlet pipe has an upper end face that is longer than or equal to the lower end face in the horizontal direction.

3. The humidification tank according to claim 1, characterized in that: The humidification tank body has a groove at the air outlet, the air outlet is located in the groove, and a water storage area is formed between the groove and the humidification tank body. The humidification tank body is also provided with a drain hole, and a sealing plug is detachably installed in the drain hole. The drain hole is located on the side wall of the water storage area of ​​the humidification tank body.

4. The humidification tank according to claim 1, characterized in that: The air inlet pipe is equipped with an anti-backflow device at its outlet end, which is a baffle plate installed at the outlet end. The air inlet pipe is equipped with a flow guiding device, which includes a flow guiding groove and / or flow guiding ribs. There are multiple flow guiding ribs or flow guiding grooves, and the heights of the multiple flow guiding ribs are different. The depths and widths of the flow guiding grooves are different.

5. The humidification tank according to claim 1, characterized in that: The lower end face of the air intake pipe is inclined downward from the air intake end to the air outlet end, and the angle between it and the horizontal direction is greater than or equal to 3°.

6. The humidification tank according to claim 1, characterized in that: The humidification tank body is equipped with an airflow guide platform at the air inlet end of the air inlet pipe.

7. The humidification tank according to claim 1, characterized in that: The humidification tank cover includes a cover body and a cover body seal disposed around the cover body. The cover body seal is connected to the humidification tank body and keeps the humidification tank sealed.

8. The humidification tank according to claim 1, characterized in that: The air outlet also includes a diaphragm disposed in the air outlet. The diaphragm includes one or more membrane flaps, which are fixedly connected to the inner ring of the air outlet and are folded along the inner ring of the air outlet.

9. The humidification tank according to claim 1, characterized in that: The humidification tank body includes a first humidification tank body and a second humidification tank body, and the first humidification tank body and the second humidification tank body are sealed together.

10. The humidification tank according to claim 1, characterized in that: The humidification tank body is also provided with a heat-conducting element. The connection between the humidification tank body and the heat-conducting element is hollow. A waterproof sealing ring is also provided between the humidification tank body and the heat-conducting element.

11. A humidification tank, comprising a humidification tank body and an air inlet disposed on the humidification tank body, wherein an air inlet pipe is connected to the air inlet, the air inlet pipe comprising an air inlet end and an air outlet end, characterized in that: The humidification tank body forms a receiving chamber. The air inlet is located on the side wall of the humidification tank body. One end of the air inlet pipe is connected to the air inlet, and the other end extends into the receiving chamber. The lower part of the air inlet end of the air inlet pipe is higher than the lower part of the air outlet end in the horizontal direction. The length of the air inlet pipe is greater than or equal to half the length of the air inlet pipe of the humidification tank body in the direction of the air inlet pipe. The air inlet pipe is located on the side wall of the humidification tank body, and the air outlet is located on the upper part of the air outlet end. The humidification tank also includes a humidification tank cover, the air outlet is provided on the humidification tank cover, the humidification tank cover is detachably connected to the humidification tank body and keeps the humidification tank cover and the humidification tank body sealed during use; The top wall of the humidification tank body is provided with an installation port, the humidification tank cover is detachably connected to the installation port, and an exhaust bend is detachably connected to the air outlet. At least part of the exhaust bend extends to the outside of the humidification tank body. The humidification tank can be installed on the main unit, and the exhaust bend can fix the humidification tank and the main unit.

12. The humidification tank according to claim 11, characterized in that: The air outlet end of the air inlet pipe has an upper end face that is longer than or equal to the lower end face in the horizontal direction.

13. The humidification tank according to claim 11, characterized in that: The humidification tank body has a groove at the air outlet, the air outlet is located in the groove, and a water storage area is formed between the groove and the humidification tank body. The humidification tank body is also provided with a drain hole, and a sealing plug is detachably installed in the drain hole. The drain hole is located on the side wall of the water storage area of ​​the humidification tank body.

14. The humidification tank according to claim 11, characterized in that: The air inlet pipe is equipped with an anti-backflow device at its outlet end, which is a baffle plate installed at the outlet end. The air inlet pipe is equipped with a flow guiding device, which includes a flow guiding groove and / or flow guiding ribs. There are multiple flow guiding ribs or flow guiding grooves, and the heights of the multiple flow guiding ribs are different. The depths and widths of the flow guiding grooves are different.

15. The humidification tank according to claim 11, characterized in that: The lower end face of the air intake pipe is inclined downward from the air intake end to the air outlet end, and the angle between it and the horizontal direction is greater than or equal to 3°.

16. The humidification tank according to claim 11, characterized in that: The humidification tank body is equipped with an airflow guide platform at the air inlet end of the air inlet pipe.

17. The humidification tank according to claim 11, characterized in that: The humidification tank cover includes a cover body and a cover body seal disposed around the cover body. The cover body seal is connected to the humidification tank body and keeps the humidification tank sealed.

18. The humidification tank according to claim 11, characterized in that: The air outlet also includes a diaphragm disposed in the air outlet. The diaphragm includes one or more membrane flaps, which are fixedly connected to the inner ring of the air outlet and are folded along the inner ring of the air outlet.

19. The humidification tank according to claim 11, characterized in that: The humidification tank body includes a first humidification tank body and a second humidification tank body, and the first humidification tank body and the second humidification tank body are sealed together.

20. The humidification tank according to claim 11, characterized in that: The humidification tank body is also provided with a heat-conducting element. The connection between the humidification tank body and the heat-conducting element is hollow. A waterproof sealing ring is also provided between the humidification tank body and the heat-conducting element.

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