Humidifier water adding structure, humidifier and breathing machine

Abstract

The utility model discloses a humidifier water adding structure, a humidifier and a breathing machine, and relates to the technical field of humidifier water adding. The water adding structure comprises a water adding bottle, a liquid separating needle nozzle, a waterproof breathable film, a humidifier body, a water adding pipe, an air inlet pipe and a water level limiting structure. The liquid distribution needle nozzle is installed on a bottle opening of the water adding bottle, a water outlet channel and an air inlet channel which are independent of each other are arranged in the liquid distribution needle nozzle, the water outlet channel and the air inlet channel are communicated with the water adding bottle, a water inlet and an air outlet hole are formed in the humidifier body, one end of the water adding pipe is communicated with the water outlet channel, and the other end of the water adding pipe is communicated with the water inlet. One end of the air inlet pipe is communicated with the air inlet channel, the other end of the air inlet pipe is communicated with the air outlet, the water level limiting structure is arranged in the humidifier body and communicated with the air outlet, and a distance is reserved between the end, away from the air outlet, of the water level limiting structure and the inner bottom face of the humidifier body. According to the humidifier, water can be added into the humidifier body more accurately according to the air pressure principle, and therefore the experience feeling of a user can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of humidifier water adding, and in particular to a humidifier water adding structure, a humidifier and a ventilator. Background Art

[0002] With the development of economy, people pay more and more attention to the health of themselves and their families, especially patients with obstructive sleep apnea (OSA) who use ventilators. The ventilators include humidifiers. In order to make the ventilators work better, water needs to be added to the humidifier. In order to make it more convenient to add water to the humidifier, a corresponding humidifier water adding structure is needed.

[0003] The humidifier water adding structure in the related art includes a water adding bottle, a water adding pipe, a humidifier body and a silicone plugging head arranged in the humidifier body, and the water adding pipe connects the water adding bottle and the humidifier body. When the water level in the humidifier body is too low, the top of the silicone plugging head is away from the water inlet hole at the top of the humidifier body, and the liquid flows into the humidifier body from the water adding bottle through the water adding pipe, the water level in the humidifier body rises, and the silicone plugging head floats up. When the liquid in the humidifier body reaches a predetermined water level, the top of the silicone plugging head supports the water inlet hole at the top of the humidifier body through buoyancy. When the upward buoyancy of the silicone plugging head reaches the pressure that can seal the downward pressure of the liquid at the top of the humidifier body, the plugging is completed, and the addition of water to the humidifier body is stopped. In this cycle, water can be automatically added to the humidifier body.

[0004] However, the ability of the humidifier water adding structure in the related art to automatically stop adding water at a preset water level is closely related to the smoothness, hardness, volume, weight of the silicone plugging head, the smoothness of the surface of the water inlet hole inside the humidifier body, etc., and there are many influencing factors. Therefore, the humidifier water adding structure in the related art cannot automatically add water to the humidifier body accurately, thereby reducing the user experience. Utility Model Content

[0005] The main purpose of the present application is to provide a humidifier water adding structure, a humidifier and a ventilator, aiming to solve the technical problem in the prior art that the humidifier water adding structure cannot accurately and automatically add water to the humidifier body.

[0006] In order to solve the above technical problems, the present application provides a humidifier water adding structure, the water adding structure comprising:

[0007] Add water bottles;

[0008] A liquid dispensing nozzle, the liquid dispensing nozzle is installed on the bottle mouth of the water adding bottle, and a water outlet channel and an air inlet channel are provided in the liquid dispensing nozzle, and the water outlet channel and the air inlet channel are both connected to the water adding bottle;

[0009] A waterproof and breathable membrane, which is arranged on the liquid dispensing needle nozzle and covers the radial cross section of the air inlet channel;

[0010] A humidifier body, wherein the humidifier body is provided with a water inlet and an air outlet communicated with the interior of the humidifier body;

[0011] A water supply pipe, one end of which is connected to the water outlet channel, and the other end of which is connected to the water inlet;

[0012] An air inlet pipe, one end of which is connected to the air inlet passage, and the other end of which is connected to the air outlet;

[0013] A water level limiting structure is provided in the humidifier body and is connected to the air outlet, and a distance is provided between an end of the water level limiting structure away from the air outlet and an inner bottom surface of the humidifier body.

[0014] In a possible embodiment, the liquid dispensing needle nozzle includes an integrally formed needle tip portion, a water outlet portion and an air inlet portion, the water outlet channel and the air inlet channel are both arranged in the needle tip portion, the water outlet portion is connected to the water outlet channel, and the air inlet portion is connected to the air inlet channel.

[0015] In a possible embodiment, the water filling pipe is connected to the water outlet.

[0016] In a possible embodiment, the water adding structure further includes an air intake joint, and the air intake pipe is connected to the air intake part via the air intake joint.

[0017] In a possible embodiment, the air inlet connector includes a first air inlet section and a second air inlet section that are interconnected, the diameter of the first air inlet section is larger than the diameter of the air inlet portion, the first air inlet section is connected to the air inlet portion, and the waterproof breathable membrane is arranged between the first air inlet section and the air inlet portion.

[0018] In a possible embodiment, the water level limiting structure includes a water level limiting cylinder disposed in the humidifier body, the water level limiting cylinder is connected to the air outlet, and there is a distance between an end of the water level limiting cylinder away from the air outlet and an inner bottom surface of the humidifier body.

[0019] In a possible embodiment, the inner diameter of the water level limiting cylinder is significantly larger than the diameter of the air outlet.

[0020] In a possible embodiment, the water level limiting structure further includes at least one water guide rod which is arranged on the inner wall of the water level limiting cylinder and extends to the outside of the water level limiting cylinder in a direction away from the air outlet.

[0021] In a possible embodiment, the present application also provides a humidifier, which includes the humidifier water adding structure described in the present application.

[0022] In a possible embodiment, the present application also provides a ventilator, which includes the humidifier described in the present application.

[0023] Compared with the prior art, this application has the following beneficial effects:

[0024] The embodiment of the present application proposes a humidifier water adding structure, a humidifier and a ventilator, wherein the water adding bottle is connected to the humidifier body through a water adding pipe, and the water adding bottle is connected to the humidifier body through an air inlet pipe. When the water level in the humidifier body is lower than the lower end of the water level limiting structure, the water in the water adding bottle will automatically flow into the humidifier body under the action of air pressure. When the water level in the humidifier body is higher than the lower end of the water level limiting structure, the water addition into the humidifier body is stopped. In this way, water can be added to the humidifier body more accurately by using the air pressure principle, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A front cross-sectional structural schematic diagram of a humidifier water adding structure provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the three-dimensional structure of a humidifier body provided in an embodiment of the present application;

[0028] Figure 3 A schematic top view of a humidifier body provided in an embodiment of the present application;

[0029] Figure 4 Provided in the embodiments of this application Figure 3 One of the cross-sectional views at AA in the middle;

[0030] Figure 5 Provided in the embodiments of this application Figure 3 The second cross-sectional view at AA in the middle;

[0031] Figure 6 A bottom view schematic diagram showing that the water diversion rod provided in the embodiment of the present application is arranged on the inner wall of the water level limiting cylinder;

[0032] Figure 7A three-dimensional schematic diagram of a liquid dispensing needle nozzle provided in an embodiment of the present application;

[0033] Figure 8 A front cross-sectional schematic diagram of a liquid dispensing needle nozzle provided in an embodiment of the present application;

[0034] Fig. 9 A partial cross-sectional schematic diagram of the connection between the dispensing needle nozzle, the water adding bottle, the water adding pipe and the air outlet pipe provided in an embodiment of the present application;

[0035] Fig.10 A front cross-sectional schematic diagram of the air intake connector provided in an embodiment of the present application.

[0036] Figure numerals: 1. humidifier body; 11. air outlet; 12. air inlet; 13. water inlet; 14. air outlet; 2. water filling pipe; 3. liquid dispensing needle nozzle; 31. needle tip; 32. water outlet; 33. air inlet; 301. water outlet channel; 302. air inlet channel; 4. water filling bottle; 5. air inlet pipe; 6. water level limiting structure; 61. water level limiting cylinder; 62. water guide rod; 7. sealing plug; 8. air inlet joint; 81. first air inlet section; 82. second air inlet section; 9. waterproof and breathable membrane. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the present application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present application, it should be noted that the terms “left”, “right”, “upper”, “lower”, etc. are based on the orientations represented by the corresponding views.

[0042] See also Figure 1-Figure 2 and Fig. 9 The present application provides a humidifier water adding structure, which includes a water adding bottle 4, a liquid dispensing needle nozzle 3, a waterproof and breathable membrane 9, a humidifier body 1, a water adding pipe 2, an air inlet pipe 5 and a water level limiting structure 6.

[0043] A sealing plug 7 may be provided in the bottle mouth of the water adding bottle 4 . The material of the sealing plug 7 may include silica gel. The sealing plug 7 may prevent the water in the water adding bottle 4 from flowing out.

[0044] The liquid dispensing nozzle 3 is mounted on the bottle mouth of the water adding bottle 4, and a water outlet channel 301 and an air inlet channel 302 are provided in the liquid dispensing nozzle 3, and both the water outlet channel 301 and the air inlet channel 302 are connected to the water adding bottle 4. The water in the water adding bottle 4 can flow out through the water outlet channel 301, and the external gas can enter the water adding bottle 4 through the air inlet channel 302.

[0045] The waterproof breathable membrane 9 is arranged on the liquid dispensing needle nozzle 3 and covers the radial section of the air inlet channel 302. The waterproof breathable membrane 9 is a conventional product. Since the waterproof breathable membrane 9 blocks the radial section of the air inlet channel 302, the water in the water adding bottle 4 cannot pass through the waterproof breathable membrane 9, and the external gas can enter the water adding bottle 4 through the waterproof breathable membrane 9.

[0046] The humidifier body 1 is provided with a water inlet 13 and an air outlet 14 which are connected to the inside of the humidifier body 1; one end of the water adding pipe 2 is connected to the water outlet channel 301, and the other end is connected to the water inlet 13; one end of the air inlet pipe 5 is connected to the air inlet channel 302, and the other end is connected to the air outlet 14.

[0047] Please see again Figure 2 The humidifier body 1 is also provided with an air inlet 12 and an air outlet 11 which are connected to the inside of the humidifier body 1. The air inlet 12 can be connected to the air inlet pipe of the ventilator body, and the air outlet 11 can be connected to the patient end mask via the breathing tube. The gas enters the humidifier body 1 from the air inlet 12 through the air inlet pipe of the ventilator body to be humidified, and then enters the breathing tube and the mask through the air outlet 11 to be delivered to the patient for use.

[0048] The water level limiting structure 6 is arranged in the humidifier body 1 and is connected to the air outlet 14. There is a distance between the end of the water level limiting structure 6 away from the air outlet 14 and the inner bottom surface of the humidifier body 1, and the distance is used to control the height of the water level in the humidifier body 1.

[0049] The water adding pipe 2 and the air inlet pipe 5 can be connected to the liquid separation needle 3 in advance as a whole. When in use, the liquid separation needle 3 can be inserted through the sealing plug 7 in the mouth of the water adding bottle 4, so that the water adding pipe 2 can be connected to the inside of the water adding bottle 4 through the water outlet channel 301, and the air inlet pipe 5 can be connected to the inside of the water adding bottle 4 through the air inlet channel 302. In this way, there is no need to insert the water adding pipe 2 and the air inlet pipe 5 into the water adding bottle 4 separately, and there is no need to distinguish the jacks of the water adding pipe 2 and the air inlet pipe 5 on the water adding bottle 4. Therefore, by providing the liquid separation needle 3, and providing the water outlet channel 301 and the air inlet channel 302 in the liquid separation needle 3, the water adding pipe 2 and the air inlet pipe 5 can be connected to the water adding bottle 4 more quickly and accurately.

[0050] When the water level in the humidifier body 1 is below the water level limiting structure 6, the gas flows into the humidifier body 1 from the air inlet 12 of the humidifier body 1, flows through the water level limiting structure 6 inside the humidifier body 1, reaches the air outlet 14 of the humidifier body 1, and then passes through the air inlet pipe 5 and the waterproof and breathable membrane 9 from the air inlet channel 302 of the dispensing needle nozzle 3 into the water adding bottle 4.

[0051] At this time, the gas pressure at the bottom of the water adding bottle 4 is almost equal to the pressure inside the humidifier body 1. Under the action of gravity, the liquid in the water adding bottle 4 enters the water adding pipe 2 through the water outlet channel 301 of the liquid dispensing needle nozzle 3, and flows into the humidifier body 1 from the water adding pipe 2. The water level in the humidifier body 1 gradually increases until the water level reaches the lower end surface of the water level limiting structure 6 inside it. The gas path flowing into the water adding bottle 4 through the water level limiting structure 6 is blocked by the liquid in the humidifier body 1, and no gas flows into the water adding bottle 4.

[0052] When the liquid continues to flow into the humidifier body 1, the air at the bottom of the water bottle 4 generates negative pressure. When the pressure difference between the water bottle 4 and the humidifier body 1 is greater than or equal to the gravity of the pipeline liquid, the liquid in the water bottle 4 stops flowing downward into the humidifier body 1. At this time, the water level in the humidifier body 1 is automatically controlled within a predetermined range.

[0053] When the water in the humidifier body 1 continues to evaporate and humidify the air, the water level drops, the water level limiting structure 6 is reconnected with the air passage inside the humidifier body 1, and the gas entering the water bottle 4 starts to inject liquid into the humidifier body 1 again, until the water level of the humidifier body 1 reaches a predetermined range. In this cycle, water can be automatically added to the humidifier body 1.

[0054] The water adding structure uses the air pressure principle and is less affected by factors. It only needs to control the height of the water level limit structure 6 to adjust the height of the preset water level. The failure rate is low, the water control position accuracy is high, and the water control effect is also significant after long-term use. It is not easy to automatically stop adding water to the humidifier body 1 after a period of use. The service life of the automatic water adding humidifier and the reliability of automatic water control are improved. The water level in the humidifier body 1 is highly stable, so that the humidification level of the gas output to the user can be ensured to be at an ideal level, thereby optimizing the user experience.

[0055] Based on the above design, the present embodiment connects the water adding bottle 4 and the humidifier body 1 through the water adding pipe 2, and connects the water adding bottle 4 and the humidifier body 1 through the air inlet pipe 5. When the water level in the humidifier body 1 is lower than the lower end of the water level limiting structure 6, the water in the water adding bottle 4 will automatically flow into the humidifier body 1 under the action of air pressure. When the water level in the humidifier body 1 is higher than the lower end of the water level limiting structure 6, the water is stopped from being added into the humidifier body 1. In this way, water can be added into the humidifier body 1 more accurately by using the air pressure principle, thereby improving the user experience.

[0056] In some embodiments, see Figure 2-Figure 4 The water level limiting structure 6 includes a water level limiting cylinder 61 arranged in the humidifier body 1, the water level limiting cylinder 61 is connected to the air outlet 14, and there is a distance between the end of the water level limiting cylinder 61 away from the air outlet 14 and the inner bottom surface of the humidifier body 1.

[0057] The distance between the lower end of the water level limiting cylinder 61 and the inner bottom surface of the humidifier body 1 is used to control the height of the water level in the humidifier body 1. When the water level in the humidifier body 1 is lower than the lower end position of the water level limiting cylinder 61, the gas can enter the air inlet pipe 5 through the water level limiting cylinder 61, and then enter the water adding bottle 4 from the air inlet pipe 5, and finally make the liquid in the water adding bottle 4 flow into the humidifier body 1.

[0058] In some embodiments, please refer again to Figure 4 The inner diameter of the water level limiting cylinder 61 is obviously larger than the diameter of the air outlet 14 .

[0059] When the water level of the humidifier body 1 drops, if the inner diameter of the water level limit cylinder 61 is relatively small, due to the capillary phenomenon of water molecules, a section of water column may still be blocked in the air channel (the gas channels between the humidifier body 1 and the water adding bottle 4 are all air channels, such as the air inlet pipe 5, the air inlet channel 302, etc.) inside the water level limit cylinder 61. Long-term use of the air channel may cause it to be filled with liquid, thereby affecting the automatic water control effect of the water adding structure.

[0060] In this embodiment, the inner diameter of the water level limiting cylinder 61 is set to be relatively large, so that water molecules cannot overcome the gravity of the large-section water column by the tension between molecules. The liquid is not easy to be blocked in the air channel, and long-term use will not affect the automatic water control function of the water adding structure.

[0061] In some embodiments, see Figure 5-Figure 6 The water level limiting structure 6 also includes at least one water guide rod 62 which is arranged on the inner wall of the water level limiting cylinder 61 and extends to the outside of the water level limiting cylinder 61 in a direction away from the air outlet 14 .

[0062] There can be multiple water guide rods 62, and multiple water guide rods 62 can be evenly arranged on the inner wall of the water level limiting cylinder 61, and the water guide rods 62 can be integrally formed with the inner wall of the water level limiting cylinder 61. The water guide rods 62 can be used to guide the water in the air channel to the humidifier body 1, so that the liquid is less likely to be blocked in the air channel, thereby further improving the automatic water control function of the water adding structure.

[0063] Since the water guide rod 62 is arranged on the inner wall of the water level limiting cylinder 61, the liquid is not easy to be blocked in the air passage, so there is no need to design a waterproof and breathable membrane 9 at the lower end of the water level limiting cylinder 61, which has better air permeability and lower cost. Since the air permeability between the water adding bottle 4 and the humidifier body 1 is better, there is no need to set a Murphy-type dropper structure on the water adding pipe 2, so that a large pressure difference can be generated between the water adding bottle 4 and the humidifier body 1, and the water in the water adding bottle 4 can enter the humidifier body 1 without manual operation.

[0064] In some embodiments, see Figure 7-10 The liquid dispensing needle nozzle 3 includes an integrally formed needle tip portion 31, a water outlet portion 32 and an air inlet portion 33. The water outlet channel 301 and the air inlet channel 302 are both arranged in the needle tip portion 31. The water outlet portion 32 is connected to the water outlet channel 301, and the air inlet portion 33 is connected to the air inlet channel 302. The water adding pipe 2 is connected to the water outlet portion 32. The water adding structure also includes an air inlet joint 8, and the air inlet pipe 5 is connected to the air inlet portion 33 through the air inlet joint 8.

[0065] The water supply pipe 2 and the water outlet 32, the air intake pipe 5 and the air intake connector 8, and the air intake connector 8 and the air intake portion 33 are all connected by interference fit. Of course, other fixed and sealed connection methods, such as threads, can also be used, which are not limited here. When in use, only part of the needle tip 31 needs to be inserted into the water supply bottle 4, so that the water supply pipe 2 and the air intake pipe 5 can be connected to the water supply bottle 4.

[0066] In some embodiments, please refer again to Fig. 9 and Fig.10The air intake connector 8 includes a first air intake section 81 and a second air intake section 82 which are interconnected. The diameter of the first air intake section 81 is larger than the diameter of the air intake portion 33. The first air intake section 81 is connected to the air intake portion 33. The waterproof breathable membrane 9 is arranged between the first air intake section 81 and the air intake portion 33.

[0067] If glue is used to bond the waterproof breathable membrane 9 to the air inlet channel 302, there is a risk of releasing toxic substances when the glue is used in high-temperature water for a long time. In this embodiment, the diameter of the first air inlet section 81 is set to be larger than the diameter of the air inlet portion 33, so that the waterproof breathable membrane 9 can be pressed tightly between the first air inlet section 81 and the air inlet portion 33. In this way, it is easier to install the waterproof breathable membrane 9, and the use of the humidifier water adding structure can also be made safer.

[0068] In summary, the water adding structure of the present application can automatically add water when the water level inside the humidifier body 1 is lower than the set height, and automatically stop adding water after adding water to the predetermined height, so that the water level inside the humidifier body 1 is always in an ideal state during the use of the respirator, and the air humidification level output by the respirator through the humidifier body 1 is always maintained in a relatively stable and ideal state, which improves the user's experience and reduces the burden of the user frequently adding water to the humidifier body 1. In addition, the structure of the water adding structure is simpler, the automatic water adding function is more reliable, and the service life of the humidifier body 1 in this function is greatly increased, while reducing the cost of the water adding structure.

[0069] Based on the same inventive concept, in some embodiments, the present application further provides a humidifier, which includes the humidifier water adding structure of the present application. Since the humidifier includes the humidifier water adding structure of the present application, the automatic water adding effect of the humidifier is better, the cost is lower, and the service life is longer.

[0070] Based on the same inventive concept, in some embodiments, the present application further provides a ventilator, which includes the humidifier in the present application. Since the ventilator includes the humidifier in the present application, the automatic water addition effect of the ventilator is better, the cost is lower, and the service life is longer.

[0071] The above are only various implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A humidifier water adding structure, characterized in that: The water adding structure comprises: Add water bottle (4); A liquid dispensing needle nozzle (3), the liquid dispensing needle nozzle (3) being mounted on the bottle mouth of the water adding bottle (4), the liquid dispensing needle nozzle (3) being provided with mutually independent water outlet channels (301) and air inlet channels (302), the water outlet channels (301) and the air inlet channels (302) both being in communication with the water adding bottle (4); a waterproof and breathable membrane (9), the waterproof and breathable membrane (9) being arranged on the liquid dispensing needle nozzle (3) and covering a radial cross section of the air inlet channel (302); A humidifier body (1), wherein the humidifier body (1) is provided with a water inlet (13) and an air outlet (14) which are in communication with the interior of the humidifier body (1); A water supply pipe (2), one end of the water supply pipe (2) being in communication with the water outlet channel (301), and the other end of the water supply pipe (2) being in communication with the water inlet (13); An air intake pipe (5), one end of the air intake pipe (5) being in communication with the air intake passage (302), and the other end of the air intake pipe (5) being in communication with the air outlet hole (14); A water level limiting structure (6), wherein the water level limiting structure (6) is arranged in the humidifier body (1) and is connected to the air outlet (14), and there is a distance between an end of the water level limiting structure (6) away from the air outlet (14) and the inner bottom surface of the humidifier body (1).

2. The humidifier water adding structure according to claim 1, characterized in that: The liquid dispensing needle nozzle (3) comprises an integrally formed needle tip portion (31), a water outlet portion (32) and an air inlet portion (33); the water outlet channel (301) and the air inlet channel (302) are both arranged in the needle tip portion (31); the water outlet portion (32) is communicated with the water outlet channel (301); and the air inlet portion (33) is communicated with the air inlet channel (302).

3. The humidifier water supply structure according to claim 2, characterized in that: The water supply pipe (2) is connected to the water outlet (32).

4. The humidifier water supply structure according to claim 2, characterized in that: The water adding structure also includes an air intake joint (8), and the air intake pipe (5) is connected to the air intake part (33) via the air intake joint (8).

5. The humidifier water supply structure according to claim 4, characterized in that: The air inlet joint (8) comprises a first air inlet section (81) and a second air inlet section (82) which are interconnected, the diameter of the first air inlet section (81) being larger than the diameter of the air inlet portion (33), the first air inlet section (81) being connected to the air inlet portion (33), and the waterproof breathable membrane (9) being arranged between the first air inlet section (81) and the air inlet portion (33).

6. The humidifier water supply structure according to claim 1, characterized in that: The water level limiting structure (6) comprises a water level limiting cylinder (61) arranged in the humidifier body (1); the water level limiting cylinder (61) is connected to the air outlet (14); and there is a distance between an end of the water level limiting cylinder (61) away from the air outlet (14) and the inner bottom surface of the humidifier body (1).

7. The humidifier water supply structure according to claim 6, characterized in that: The inner diameter of the water level limiting cylinder (61) is greater than the diameter of the air outlet hole (14).

8. The humidifier water supply structure according to claim 6, characterized in that: The water level limiting structure (6) further comprises at least one water guide rod (62) which is arranged on the inner wall of the water level limiting cylinder (61) and extends in a direction away from the air outlet (14) to the outside of the water level limiting cylinder (61).

9. A humidifier, characterized in that: The humidifier comprises the humidifier water adding structure according to any one of claims 1-8.

10. A ventilator, characterized in that: The ventilator comprises a humidifier as claimed in claim 9.

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