Humidifying tank and breathing machine with same

Abstract

The utility model provides a humidifying tank and a breathing machine with the same, the humidifying tank comprises a tank body, the tank body is provided with a humidifying cavity, an air inlet path for dry air to flow in and an air outlet path for humidified air to flow out, the tank body comprises a tank body main body and a cover body, and the cover body comprises a cover body main body and a cover plate. An air inlet path and an air outlet path are defined by the cover plate and the cover main body; the reference plane where the cover plate is located has a first preset direction and a second preset direction which are perpendicular to each other, and a first projection of the first air inlet on the reference plane and a second projection of the second air outlet on the reference plane are sequentially arranged in the first preset direction; in the second preset direction, a third projection of the first air outlet on the datum plane and a fourth projection of the second air inlet on the datum plane are arranged at intervals with the first projection; in the first preset direction, the third projection and the fourth projection are both located between the first projection and the second projection. The humidifying tank solves the problem that a humidifying tank in the prior art is low in humidifying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ventilator technology, and more specifically, to a humidifier and a ventilator having the same. Background Technology

[0002] Positive pressure ventilation (PPV), also known as a ventilator, is a commonly used device to increase lung ventilation and improve respiratory function. To prevent the air from becoming too dry and causing damage to the respiratory mucosa, a humidifier is installed at the outlet of the ventilator. The humidifier increases the moisture content of the air, maintaining a certain level of humidity in the air entering the respiratory tract, mimicking the state of natural breathing and reducing irritation to the respiratory tract.

[0003] Currently, the humidification efficiency of humidifiers is affected not only by factors such as the heating plate area, water tank volume, and heating plate power, but also by airflow direction. Furthermore, if patients forget to empty the humidifier, backflow of fluid into the ventilator during device relocation can easily cause safety issues such as short circuits. Utility Model Content

[0004] The main objective of this invention is to provide a humidification tank and a ventilator having the same, in order to solve the problem of low humidification efficiency of existing humidification tanks.

[0005] To achieve the above objectives, according to one aspect of the present invention, a humidification tank is provided, comprising a tank body having a humidification chamber, an inlet air passage for supplying dry gas, and an outlet air passage for supplying humidified gas. The tank body includes a tank body main body and a cover that is openable and closable on the tank body main body. The cover includes a cover body main body and a cover plate fixedly connected to the cover body main body. The cover plate is disposed opposite to the top plate of the cover body main body and together with the cover body main body forms the inlet air passage and the outlet air passage. A first inlet of the inlet air passage and a second outlet of the outlet air passage are both disposed on the cover body main body. The side plate, the first air outlet of the air intake path and the second air inlet of the air outlet path are both located on the cover plate; the reference plane on which the cover plate is located has a first preset direction and a second preset direction that are perpendicular to each other, and the first projection of the first air inlet on the reference plane and the second projection of the second air outlet on the reference plane are arranged sequentially along the first preset direction; in the second preset direction, the third projection of the first air outlet on the reference plane and the fourth projection of the second air inlet on the reference plane are both spaced apart from the first projection; in the first preset direction, the third projection and the fourth projection are both located between the first projection and the second projection.

[0006] Furthermore, the third projection and the fourth projection are arranged sequentially along the second preset direction; in the first preset direction, the third projection and the fourth projection are both centrally located between the first projection and the second projection.

[0007] Furthermore, the top plate includes a first plate segment and a second plate segment connected to the first plate segment. The first plate segment is located on the side of the second plate segment near the side plate, and the first plate segment is inclined relative to the second plate segment toward the cover plate.

[0008] Furthermore, the main body of the cover includes a cover section and an air passage section. The air passage section is connected to the inner wall of the cover section and protrudes from the top plate of the cover section. There is an anti-backflow cavity between the outer wall of the air passage section and the cover section. The cover plate is placed on the air passage section so that the cover plate, the air passage section and the cover section together form an inlet air passage and an outlet air passage.

[0009] Furthermore, the tank also includes: an air inlet guide section, including a flow guide section and an anti-backflow plate. The flow guide section extends vertically, with its first end connected to the cover plate and communicating with the first air outlet. The second end of the flow guide section extends toward the bottom of the humidification chamber and is connected to the anti-backflow plate. The flow guide section and the anti-backflow plate together form an outlet located on the side of the air inlet guide section, so that the dry gas entering the air inlet guide section is guided by the anti-backflow plate and flows out through the outlet. The anti-backflow plate is set at a preset angle with the plane where the first air outlet is located, and the preset angle is greater than or equal to 40 degrees and less than 90 degrees.

[0010] Furthermore, the preset angle is greater than or equal to 55 degrees and less than or equal to 75 degrees.

[0011] Furthermore, the tank also includes: an exhaust guide section extending vertically, one end of which is connected to the cover plate and communicates with the second air inlet, and the other end of which extends toward the bottom of the humidification chamber; wherein, the exhaust guide section is a curved plate structure, and both ends of the curved plate structure are connected to the drainage section, so that the exhaust guide section and the drainage section together form an exhaust guide channel for guiding the humidified gas.

[0012] Furthermore, the outlet is positioned on the side opposite to the outlet guide.

[0013] Furthermore, the intake end of the intake passage has an intake flare section, and the flow area of ​​the intake flare section gradually decreases along the intake direction of the intake passage; the outlet end of the exhaust passage has an outlet flare section, and the flow area of ​​the outlet flare section gradually increases along the outlet direction of the exhaust passage.

[0014] According to another aspect of the present invention, a ventilator is provided, including a humidification tank, wherein the humidification tank is the humidification tank described above.

[0015] Applying the technical solution of this utility model, the humidification tank has a humidification chamber, an inlet air path, and an outlet air path. The inlet air path is a drying air path, and the outlet air path is a humidification air path. Dry pressurized gas enters the humidification chamber along the inlet air path. At this time, the heat-conducting plate of the humidification tank heats the water in the humidification chamber, causing the humidified gas to flow out through the outlet air path and enter the ventilator's adapter assembly. Specifically, the third projection and the fourth projection are both spaced apart from the first projection in the second preset direction, and the third projection and the fourth projection are located between the first projection and the second projection in the first preset direction. That is, the first outlet and the second inlet are both spaced apart from the first inlet or the second outlet, and the first outlet and the second inlet are both located between the first inlet and the second outlet. This changes the direction and position of the airflow, thereby improving the humidification efficiency and solving the problem of low humidification efficiency in existing humidification tanks. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A top view of an embodiment of the humidification tank according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A sectional view at section AA in the middle;

[0019] Figure 3 A schematic diagram of the cover of the humidification tank according to the present invention is shown;

[0020] Figure 4 A schematic diagram of the humidification tank according to the present invention after the cover plate has been removed is shown;

[0021] Figure 5 A cross-sectional view of the air inlet flare section of the humidification tank according to the present invention is shown;

[0022] Figure 6 A cross-sectional view of the vented section of the humidification tank according to the present invention is shown.

[0023] Figure 7 A schematic diagram of the main body of the humidification tank according to the present invention is shown;

[0024] Figure 8 A schematic diagram of an embodiment of a ventilator according to the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 11. Humidification chamber; 12. Air intake path; 121. Air intake flare section; 122. First air intake; 123. First air outlet; 13. Air outlet path; 131. Air outlet flare section; 132. Second air intake; 133. Second air outlet;

[0027] 20. Tank body;

[0028] 30. Cover body; 31. Cover body main body; 311. Top plate; 312. Side plate; 313. First plate section; 314. Second plate section; 315. Cover body part; 316. Air passage part; 317. Anti-backflow cavity; 32. Cover plate;

[0029] 41. Drainage section; 42. Backflow prevention plate; 43. Outlet;

[0030] 50. Exhaust guide section;

[0031] 61. Heat-conducting plate; 62. Clip;

[0032] 7. Adapter components. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] This utility model provides a humidification tank; please refer to [reference needed]. Figures 1 to 7The container includes a tank body, which has a humidification chamber 11, an inlet air passage 12 for supplying dry gas, and an outlet air passage 13 for supplying humidified gas. The tank body includes a main body 20 and a cover 30 that is openable and closable on the main body 20. The cover 30 includes a cover body 31 and a cover plate 32 fixedly connected to the cover body 31. The cover plate 32 is positioned opposite to the top plate 311 of the cover body 31 and together with the cover body 31, forms the inlet air passage 12 and the outlet air passage 13. The first inlet 122 of the inlet air passage 12 and the second outlet 133 of the outlet air passage 13 are both located on the side plate 312 of the cover body 31. The first air outlet 123 of the air passage 12 and the second air inlet 132 of the air passage 13 are both located on the cover plate 32; the reference plane on which the cover plate 32 is located has a first preset direction and a second preset direction that are perpendicular to each other, and the first projection of the first air inlet 122 on the reference plane and the second projection of the second air outlet 133 on the reference plane are arranged sequentially along the first preset direction; in the second preset direction, the third projection of the first air outlet 123 on the reference plane and the fourth projection of the second air inlet 132 on the reference plane are both spaced apart from the first projection; in the first preset direction, the third projection and the fourth projection are both located between the first projection and the second projection.

[0037] The humidification tank of this utility model has a humidification chamber 11, an air inlet passage 12, and an air outlet passage 13. The air inlet passage 12 is a drying passage, and the air outlet passage 13 is a humidification passage. The dry and pressurized gas enters the humidification chamber 11 along the air inlet passage 12. At this time, the heat-conducting plate 61 of the humidification tank heats the water in the humidification chamber 11, so that the humidified gas flows out through the air outlet passage 13 and enters the ventilator's adapter assembly 7 after passing through the air outlet passage 13. Specifically, the third projection and the fourth projection are both spaced apart from the first projection in the second preset direction, and the third projection and the fourth projection are located between the first projection and the second projection in the first preset direction. That is, the first air outlet 123 and the second air inlet 132 are both spaced apart from the first air inlet 122 or the second air outlet 133, and the first air outlet 123 and the second air inlet 132 are both located between the first air inlet 122 and the second air outlet 133. This changes the direction and position of the airflow, thereby improving the humidification efficiency and solving the problem of low humidification efficiency of the humidification tank in the prior art.

[0038] Specifically, the top plate 311 includes a first plate segment 313 and a second plate segment 314 connected to the first plate segment 313. The first plate segment 313 is located on the side of the second plate segment 314 near the side plate 312. The first plate segment 313 is inclined relative to the second plate segment 314 toward the cover plate 32.

[0039] In practice, the main purpose of the first plate segment 313 is to prevent backflow. When the user puts the humidifier can containing water into a backpack or other location, if the water level is lower than the horizontal position of the cover plate 32, there will be no backflow. Even if some water enters the air inlet passage 12 and the air outlet passage 13 during the inversion process, the water will not flow out of the humidifier can due to the presence of the inclined first plate segment 313.

[0040] Optionally, the third projection and the fourth projection are arranged sequentially along the second preset direction; in the first preset direction, the third projection and the fourth projection are both centered between the first projection and the second projection.

[0041] In practice, the first air outlet 123 and the second air inlet 132 are both located in the center of the cover plate 32, which changes the direction and position of the airflow and further improves the humidification efficiency.

[0042] In this embodiment, the cover body 31 includes a cover portion 315 and an air passage portion 316. The air passage portion 316 is connected to the inner wall of the cover portion 315 and protrudes from the top plate 311 of the cover portion 315. An anti-backflow cavity 317 is formed between the outer wall of the air passage portion 316 and the cover portion 315. A cover plate 32 is placed on the air passage portion 316 so that the cover plate 32, the air passage portion 316, and the cover portion 315 together form an air inlet passage 12 and an air outlet passage 13. Since the air passage portion 316, which forms the air inlet passage 12 and the air outlet passage 13, protrudes from the top plate 311, an anti-backflow cavity 317 is formed between the air passage portion 316 and the cover portion 315. Thus, when the humidification tank is inverted, even 180°, the liquid in the tank will enter the anti-backflow cavity 317, preventing the occurrence of backflow problems due to inversion.

[0043] Specifically, the tank also includes an air inlet guide section, comprising a flow guide section 41 and an anti-backflow plate 42. The flow guide section 41 extends vertically, with its first end connected to the cover plate 32 and communicating with the first air outlet 123. The second end of the flow guide section 41 extends toward the bottom of the humidification chamber 11 and is connected to the anti-backflow plate 42. The flow guide section 41 and the anti-backflow plate 42 together form an outlet 43 located on the side of the air inlet guide section, so that the dry gas entering the air inlet guide section is guided by the anti-backflow plate 42 and flows out through the outlet 43. The anti-backflow plate 42 and the plane where the first air outlet 123 is located are set at a preset angle, which is greater than or equal to 40 degrees and less than 90 degrees.

[0044] In specific implementation, the air intake guide includes a vertically arranged guide section 41 and an inclined anti-backflow plate 42. The anti-backflow plate 42 forms a certain angle with the horizontal plane. Under the guidance of this angle, the dry gas enters the humidification chamber 11. After passing through the air intake passage 12, the airflow direction changes to the direction of the rotating shaft of the cover 30. After contacting the tank body 20, the airflow flows downward along the inner wall of the tank body 20, mixes with the liquid at the bottom of the humidification chamber 11, and then flows out through the second air inlet 132 to supply the patient for treatment, providing the patient with heated and humidified gas and reducing the damage to the mucous membrane caused by the dry gas during treatment. It is better to control the preset angle range within the range of greater than or equal to 40 degrees and less than 90 degrees to improve the anti-backflow effect and humidification efficiency.

[0045] Optionally, the preset angle is greater than or equal to 55 degrees and less than or equal to 75 degrees. This setting further improves the backflow prevention effect and humidification efficiency.

[0046] Specifically, the tank also includes: an exhaust guide 50, which extends vertically, with one end of the exhaust guide 50 connected to the cover plate 32 and communicating with the second air inlet 132, and the other end of the exhaust guide 50 extending toward the bottom of the humidification chamber 11; wherein, the exhaust guide 50 is a curved plate structure, and both ends of the curved plate structure are respectively connected to the guide section 41, so that the exhaust guide 50 and the guide section 41 together form an exhaust guide channel for guiding the humidified gas.

[0047] In practice, the inlet section 41 and the outlet guide section 50 are arranged vertically when the humidification tank cover 30 is closed. This changes the airflow direction of the dry air entering the humidification tank and the humidified airflow leaving the humidification tank, making the airflow more concentrated and improving the humidification efficiency. Furthermore, both the inlet guide section and the outlet guide section 50 protrude beyond the plane of the cover plate 32, with the inlet guide section protruding downwards more than the outlet guide section 50.

[0048] Specifically, the outlet 43 is positioned facing the side of the air inlet guide that is away from the air outlet guide 50; and / or, the anti-backflow plate 42 has a connecting end and a free end arranged sequentially along its extension direction, the connecting end being connected to the guide portion 41, and the free end extending towards the end away from the air outlet guide 50. This arrangement further improves the anti-backflow effect and humidification efficiency.

[0049] In this embodiment, the intake end of the intake passage 12 has an intake flare section 121, and the flow area of ​​the intake flare section 121 gradually decreases along the intake direction of the intake passage 12; the outlet end of the outlet passage 13 has an outlet flare section 131, and the flow area of ​​the outlet flare section 131 gradually increases along the outlet direction of the outlet passage 13. The humidification tank has flared sections at the inlet end of the inlet air passage 12 and the outlet end of the outlet air passage 13, namely, inlet flared section 121 and outlet flared section 131. The main purpose is to increase the gas volume passing through the inlet end of the inlet air passage 12 and the outlet end of the outlet air passage 13. If the inlet flared section 121 and the outlet flared section 131 are not made, in order to ensure that the gas volume passing through the inlet end of the inlet air passage 12 and the outlet end of the outlet air passage 13 is not affected, the channel space of the entire inlet air passage 12 and the outlet air passage 13 needs to be increased during the design, which would cause the positions of the inlet air passage 12 and the outlet air passage 13 to be lowered. However, such a setting would cause the outlet end of the inlet air passage 12 to also be lowered simultaneously. At this time, the outlet end of the inlet air passage 12 is closer to the liquid level of the humidification chamber 11, which would affect the humidification effect. It is evident that the design of the air inlet flare section 121 and the air outlet flare section 131 of the humidification tank solves the problem of low humidification efficiency of the humidification tank.

[0050] In practice, the cover plate 32 is set horizontally. Near the first air inlet 122 and the second air outlet 133, the cover plate 32 is provided with an air inlet flare section 121 and an air outlet flare section 131, respectively. This is mainly to increase the gas volume passing through the first air inlet 122 and the second air outlet 133. If the air flare section is not made, the entire cover plate 32 can be moved down in the design, which can also ensure that the gas volume passing through the first air inlet 122 and the second air outlet 133 is not affected. However, this will cause the position of the first air outlet 123 to move down at the same time, which is closer to the water surface level and affects the humidification effect.

[0051] In this embodiment, the humidification tank also includes a sealing ring and a snap fastener 62. The sealing ring is disposed between the tank body 20 and the cover 30 to ensure the sealing effect of the tank and prevent leakage. The tank body 20 and the cover 30 are connected by the snap fastener 62. The snap fastener is used to prevent separation and presses the sealing ring to form a seal, thus preventing leakage.

[0052] This invention improves humidification efficiency and prevents liquid from flowing back into the main unit, thus avoiding machine damage.

[0053] This utility model also provides a ventilator, such as Figure 8 As shown, it includes a humidification tank, wherein the humidification tank is the humidification tank of the above embodiment.

[0054] Specifically, the humidifier is located at the air outlet of the ventilator. Air enters from the air inlet of the ventilator, passes through the noise reduction airway, the turbine (providing positive pressure), the first air inlet 122, the second air outlet 133, and the adapter assembly 7 before being delivered to the heated breathing tubing.

[0055] Specifically, the adapter 7 has an anti-backflow chamber. In practice, the air inlet passage 12 and the air outlet passage 13 formed by the fixed connection between the humidifier cover body 31 and the cover plate 32 are both located above the humidifier. The connection with the adapter 7 can play an anti-backflow role, preventing water vapor from flowing into the patient's mouth and nose through the pipeline and avoiding choking.

[0056] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0057] The humidification tank of this utility model has a humidification chamber 11, an air inlet passage 12, and an air outlet passage 13. The air inlet passage 12 is a drying passage, and the air outlet passage 13 is a humidification passage. The dry and pressurized gas enters the humidification chamber 11 along the air inlet passage 12. At this time, the heat-conducting plate 61 of the humidification tank heats the water in the humidification chamber 11, so that the humidified gas flows out through the air outlet passage 13 and enters the ventilator's adapter assembly 7 after passing through the air outlet passage 13. Specifically, the third projection and the fourth projection are both spaced apart from the first projection in the second preset direction, and the third projection and the fourth projection are located between the first projection and the second projection in the first preset direction. That is, the first air outlet 123 and the second air inlet 132 are both spaced apart from the first air inlet 122 or the second air outlet 133, and the first air outlet 123 and the second air inlet 132 are both located between the first air inlet 122 and the second air outlet 133. This changes the direction and position of the airflow, thereby improving the humidification efficiency and solving the problem of low humidification efficiency of the humidification tank in the prior art.

[0058] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0059] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A humidification tank, comprising a tank body having a humidification chamber (11), an inlet gas passage (12) for supplying dry gas, and an outlet gas passage (13) for supplying humidified gas, characterized in that, The tank body includes a tank body (20) and a cover (30) that can be opened and closed on the tank body (20). The cover (30) includes a cover body (31) and a cover plate (32) fixedly connected to the cover body (31). The cover plate (32) is disposed opposite to the top plate (311) of the cover body (31) and together with the cover body (31) forms the air inlet passage (12) and the air outlet passage (13). The first air inlet (122) of the air inlet passage (12) and the second air outlet (133) of the air outlet passage (13) are both disposed on the side plate (312) of the cover body (31). The first air outlet (123) of the air inlet passage (12) and the second air inlet (132) of the air outlet passage (13) are both located on the cover plate (32). The reference plane on which the cover plate (32) is located has a first preset direction and a second preset direction that are perpendicular to each other. The first projection of the first air inlet (122) on the reference plane and the second projection of the second air outlet (133) on the reference plane are arranged sequentially along the first preset direction. In the second preset direction, the third projection of the first air outlet (123) on the reference plane and the fourth projection of the second air inlet (132) on the reference plane are both spaced apart from the first projection. In the first preset direction, the third projection and the fourth projection are both located between the first projection and the second projection.

2. The humidification tank according to claim 1, characterized in that, The third projection and the fourth projection are arranged sequentially along the second preset direction; in the first preset direction, the third projection and the fourth projection are both centrally located between the first projection and the second projection.

3. The humidification tank according to claim 1, characterized in that, The top plate (311) includes a first plate segment (313) and a second plate segment (314) connected to the first plate segment (313). The first plate segment (313) is located on the side of the second plate segment (314) near the side plate (312). The first plate segment (313) is inclined relative to the second plate segment (314) toward the cover plate (32).

4. The humidification tank according to claim 1, characterized in that, The main body of the cover (31) includes a cover part (315) and an air passage part (316). The air passage part (316) is connected to the inner wall of the cover part (315) and protrudes from the top plate (311) of the cover part (315). There is an anti-backflow cavity (317) between the outer wall of the air passage part (316) and the cover part (315). The cover plate (32) is placed on the air passage part (316) so that the cover plate (32), the air passage part (316) and the cover part (315) together form the air inlet passage (12) and the air outlet passage (13).

5. The humidification tank according to claim 1, characterized in that, The tank also includes: The air intake guide includes a flow guide (41) and a backflow preventer (42). The flow guide (41) extends vertically. The first end of the flow guide (41) is connected to the cover plate (32) and communicates with the first air outlet (123). The second end of the flow guide (41) extends toward the bottom of the humidification chamber (11) and is connected to the backflow preventer (42). The flow guide (41) and the backflow preventer (42) together form an outlet (43) located on the side of the air intake guide, so that the dry gas entering the air intake guide is guided by the backflow preventer (42) and flows out through the outlet (43). The anti-backflow plate (42) is set at a preset angle to the plane where the first air outlet (123) is located, and the preset angle is greater than or equal to 40 degrees and less than 90 degrees.

6. The humidification tank according to claim 5, characterized in that, The preset angle is greater than or equal to 55 degrees and less than or equal to 75 degrees.

7. The humidification tank according to claim 5, characterized in that, The tank also includes: An exhaust guide (50) extends vertically, one end of which is connected to the cover plate (32) and communicates with the second air inlet (132), and the other end of which extends toward the bottom of the humidification chamber (11). The gas outlet guide (50) is a curved plate structure, and the two ends of the curved plate structure are respectively connected to the flow guide (41) so that the gas outlet guide (50) and the flow guide (41) together form a gas outlet guide channel for guiding the humidified gas.

8. The humidification tank according to claim 7, characterized in that, The outlet (43) is disposed on the side of the air inlet guide that is away from the air outlet guide (50).

9. The humidification tank according to claim 1, characterized in that, The intake end of the intake passage (12) has an intake flare section (121), and the flow area of ​​the intake flare section (121) gradually decreases along the intake direction of the intake passage (12). The outlet end of the air passage (13) has an outlet flaring section (131), and the flow area of ​​the outlet flaring section (131) gradually increases along the outlet direction of the air passage (13).

10. A ventilator, comprising a humidifier tank, characterized in that, The humidification tank is the humidification tank according to any one of claims 1 to 9.

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