CN216908874U

CN216908874U - Humidifier and ventilation therapy device

Info

Publication number: CN216908874U
Application number: CN202123046769.1U
Authority: CN
Inventors: 刘丽君; 庄志
Original assignee: BMC Tianjin Medical Co Ltd
Current assignee: BMC Tianjin Medical Co Ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-07-08
Anticipated expiration: 2031-12-06

Abstract

The utility model relates to the field of ventilation treatment and discloses a humidifier and ventilation treatment equipment. The humidifier is in including water tank (10) that has water storage chamber (11) and setting the ventilative part (20) of absorbing water in water storage chamber (11), water tank (10) are provided with intake pipe (12) and outlet duct (13), it is located to absorb water partly of ventilative part (20) below the water level in water storage chamber (11), it has gas cavity (21) to absorb water ventilative part (20) inside injecing, the end of giving vent to anger of intake pipe (12) inserts in gas cavity (21) and be located the water level top in water storage chamber (11), outlet duct (13) with it is outer to absorb water ventilative part (20) water storage chamber (11) intercommunication. The humidifier provided by the utility model realizes gas humidification by adopting a cold evaporation technology, does not need heating, does not generate temperature difference, does not have condensed water, and does not have the problems in a steam type humidifier and an ultrasonic type humidifier.

Description

Humidifier and ventilation therapy device

Technical Field

The utility model relates to the field of ventilation treatment, in particular to a humidifier and ventilation treatment equipment comprising the same.

Background

In modern clinical medicine, comfort degree in the process of using the breathing machine is more and more concerned by people, particularly in winter in the north, the breathing machine is also required to be provided with a humidifier, moist air generated by the humidifier plays a role in humidifying and moistening the organs of a patient through which air flows such as nasal cavities, nasal mucosa, respiratory tract, heart and lung pass, the effect and compliance of wearing the machine for treating the patient can be improved, and the breathing machine is more important for the patient who wears the machine for treating for a long time.

Humidifiers for ventilators in the market at present are basically classified into two types, one type is a steam humidifier which evaporates water by an electric heating method to be vaporized, and gas with certain pressure reaches a patient end for use after being humidified; another type is an ultrasonic humidifier which ultrasonically vibrates water into particles, and gases under pressure pass through and carry the water particles to the patient end for use.

However, there are some drawbacks and limitations to the above two types of humidifiers:

the steam type humidifier has requirements on water quality, pure water or distilled water needs to be used in the water tank, and if tap water or mineral water or other water is used, scale can appear at the bottom or the side wall of the water tank after long-time heating, which is not beneficial to cleaning the water tank, and can enter the respiratory tract of a patient, so that potential safety hazards exist; and the gas that steam type humidifier came out from the gas outlet has certain temperature (generally be higher than ambient temperature), generally can use soft breathing pipe when connecting patient end and breathing machine end, when the warm humid gas that is higher than ambient temperature passes breathing pipe, breathing pipe outer wall department forms the comdenstion water on the pipe wall because ambient temperature is less than the difference in temperature of intraductal warm humid gas temperature, the comdenstion water that long-time use arouses is accumulated and may lead to the pipeline to block up, splash patient's nasal cavity or respiratory track, and flow backward the backward flow breathing machine and cause risk problems such as trouble.

Ultrasonic wave formula humidifier, the water particle granule that ultrasonic wave's high frequency vibrations were made is bigger, and naked eye is visible, exists with water smoke form usually, and water particle granule also can slowly condense on the breathing tube pipe wall for water droplet then ponding greatly to the problem that steam formula humidifier comdenstion water is the same appears.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a humidifier and ventilation therapy apparatus including the same, which address the above mentioned problems.

In order to achieve the above object, the present invention provides a humidifier, including a water tank having a water storage cavity, and a water absorbing and ventilating member disposed in the water storage cavity, wherein the water tank is provided with an air inlet pipe and an air outlet pipe, a part of the water absorbing and ventilating member is located below the water level of the water storage cavity, an air chamber is defined in the water absorbing and ventilating member, an air outlet end of the air inlet pipe is inserted into the air chamber and located above the water level of the water storage cavity, and the air outlet pipe is communicated with the water storage cavity outside the water absorbing and ventilating member.

Optionally, the water absorbing and ventilating component comprises a hollow cylinder, the inner cavity of the cylinder is the gas chamber, and an opening for inserting the gas inlet pipe is formed in the top of the cylinder.

Optionally, the humidifier comprises a support member, and the support member is arranged in the water storage cavity and used for supporting the water absorption and ventilation member.

Optionally, the support member is provided with a guide portion for guiding the support member to be fitted into the water storage chamber.

Optionally, the supporting component comprises a mounting rack and a supporting frame connected above the mounting rack, the supporting component is mounted at the bottom of the water storage cavity through the mounting rack, and the water-absorbing and air-permeable component is supported on the supporting frame.

Optionally, the mounting bracket is a disc matched with the circumferential profile of the water storage cavity, the support frame is a column extending upwards from the mounting bracket, and the bottom of the column is open and sleeved outside the support frame.

Optionally, the water absorbing and ventilating member includes an annular extension portion extending horizontally outward from the top circumference of the cylinder, the outer circumferential surface of the annular extension portion is closely attached to the circumferential wall of the water storage cavity, and the air outlet pipe is communicated with the water storage cavity above the annular extension portion.

Optionally, the mounting bracket includes an inner ring, an outer ring sleeved outside the inner ring at intervals, and a plurality of connecting ribs connected between the inner ring and the outer ring and arranged at intervals along the circumferential direction; the support frame includes upper ring and lower circle that the interval set up from top to bottom, and connect in the upper ring with a plurality of brace rods that arrange along circumference interval between the circle down, wherein:

the lower ring is connected to the inner ring, or the lower ring is the inner ring.

Optionally, the guide portion is a chamfer formed at an outer peripheral edge of the outer ring.

Optionally, the bottom of cylinder is provided with a plurality of confessions along circumference interval the recess that the splice bar set up, it is a plurality of the recess is with a plurality of the splice bar one-to-one.

Optionally, the air inlet end of the air inlet pipe and the air outlet end of the air outlet pipe are arranged in a reverse direction.

Optionally, the water-absorbing air-permeable component is made of a fibrous material, cotton or water-absorbing paper.

Optionally, the water tank includes a tank body with an open top, a cover body detachably covering the open top, and a sealing member disposed between the cover body and the tank body.

In another aspect the utility model provides a ventilation treatment device comprising a humidifier as described above.

According to the technical scheme, the evaporation filter screen is formed by the water absorption and ventilation part with good water absorption and ventilation performance, one part of the water absorption and ventilation part is immersed in water in the water storage cavity to absorb water and diffuse the water to the rest part of the water absorption and ventilation part, and gas with certain pressure entering through the air inlet pipe flows through the part, which is not immersed in the water, of the water absorption and ventilation part at a high speed, so that the water in the water absorption and ventilation part is quickly evaporated and diffused into the water storage cavity, and therefore gas humidification is achieved; the scheme does not need heating, does not generate temperature difference, does not have condensed water, and does not have the problems existing in a steam type humidifier and an ultrasonic humidifier.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a perspective view of one embodiment of a humidifier of the present invention;

FIG. 2 is a longitudinal cross-sectional view of the humidifier of FIG. 1;

FIG. 3 is an exploded view of the humidifier of FIG. 2;

FIG. 4 is a perspective view of one embodiment of a water absorbent and breathable component of the present invention;

FIG. 5 is a perspective view of the absorbent breathable component of FIG. 4 from another angle;

FIG. 6 is a perspective view of one embodiment of a support member of the present invention;

FIG. 7 is a perspective view of another angle of the support member of FIG. 6;

FIG. 8 is a schematic view of the air flow direction of the humidifier shown in FIG. 2 during use;

fig. 9 is a top cross-sectional view of the humidifier of fig. 1, showing the airflow direction;

FIG. 10 is a longitudinal cross-sectional view of another embodiment of a humidifier of the utility model;

FIG. 11 is a schematic view of the direction of air flow of the humidifier of FIG. 10 during use;

fig. 12 is a longitudinal cross-sectional view of yet another embodiment of a humidifier of the utility model.

Description of the reference numerals

10-a water tank, 11-a water storage cavity, 12-an air inlet pipe, 13-an air outlet pipe, 14-a box body, 141-a first buckle, 15-a cover body, 151-a second buckle, 16-a sealing element, 20-a water absorption and ventilation part, 21-an air cavity, 22-an opening, 23-a groove, 24-an annular extension part, 30-a support part, 31-a mounting frame, 311-an inner ring, 312-an outer ring, 313-a connecting rib, 314-a guide part, 32-a support frame, 321-an upper ring and 322-a support rib.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally refers to the orientation shown in FIG. 1. "inner and outer" refer to the inner and outer contours of the respective component itself.

The utility model provides a humidifier, which comprises a water tank 10 with a water storage cavity 11 and a water absorption and ventilation part 20 arranged in the water storage cavity 11, wherein the water tank 10 is provided with an air inlet pipe 12 and an air outlet pipe 13, one part of the water absorption and ventilation part 20 is positioned below the water level of the water storage cavity 11, an air cavity 21 is limited in the water absorption and ventilation part 20, the air outlet end of the air inlet pipe 12 is inserted into the air cavity 21 and positioned above the water level of the water storage cavity 11, and the air outlet pipe 13 is communicated with the water storage cavity 11 outside the water absorption and ventilation part 20.

Here, it is understood that the water absorbing and air permeable member 20 means a member having good water absorption and air permeability. A part of the water absorbing and ventilating member 20 is located below the water level of the water storage chamber 11, meaning that the remaining part of the water absorbing and ventilating member 20 is located above the water level of the water storage chamber 11. When the water-absorbing ventilating part 20 is used, the part of the water-absorbing ventilating part 20 below the water level of the water storage cavity 11 absorbs water, and then the water is diffused to the part of the water-absorbing ventilating part 20 above the water level of the water storage cavity 11; the gas with certain pressure entering through the air inlet pipe 12 can flow through the part of the water absorption and ventilation part 20 which is not immersed in the water at high speed, so that the water in the water absorption and ventilation part 20 is quickly evaporated and diffused to the water storage cavity 11, thereby realizing gas humidification, and the humidified gas is discharged through the air outlet pipe 13.

The humidifier of the utility model substantially adopts a cold evaporation technology, wherein the cold evaporation technology is that water molecules are evaporated into invisible ultra-micro particles with the particle size of less than 5 mu m by a pneumatic device and then diffused into the air, so that the air is saturated with water. The water particles of cold evaporation are very small in diameter and cannot be seen at all, and water mist cannot be generated.

According to the technical scheme, the water absorption and ventilation part 20 with good water absorption and ventilation performance is adopted to form the evaporation filter screen, one part of the water absorption and ventilation part 20 is immersed in water in the water storage cavity 11 to absorb water and diffuse the water to the rest part of the water absorption and ventilation part 20, and gas with certain pressure entering through the air inlet pipe 12 flows through the part of the water absorption and ventilation part 20 which is not immersed in the water at high speed, so that the water in the water absorption and ventilation part 20 is rapidly evaporated and diffused to the water storage cavity 11, and therefore gas humidification is achieved; the scheme does not need heating, does not generate temperature difference, does not have condensed water, and does not have the problems existing in a steam type humidifier and an ultrasonic humidifier.

In the present invention, the water-absorbing air-permeable member 20 may be made of a water-absorbing air-permeable material such as a fibrous material, cotton or water-absorbing paper.

In the present invention, the water tank 10 and the water absorbing air-permeable member 20 may have any appropriate shape and size as long as the effects as described above can be achieved.

According to an embodiment of the water absorbing and air permeable member 20 of the present invention, referring to fig. 4 and 5, the water absorbing and air permeable member 20 may comprise a hollow cylinder, the inner cavity of the cylinder is the air chamber 21, and the top of the cylinder is opened with an opening 22 for inserting the air inlet pipe 12.

In the present invention, in order to facilitate the installation of the water absorbing and ventilating member 20 in the water storage cavity 11 and prevent the water absorbing and ventilating member 20 from moving in the water storage cavity 11, the humidifier may further include a supporting member 30, and the supporting member 30 is disposed in the water storage cavity 11 and is used for supporting the water absorbing and ventilating member 20.

Here, the supporting member 30 may have any suitable structure as long as it can be installed in the water storage chamber 11 and support the water absorbing air permeable member 20. The structure of the supporting member 30 can be adaptively adjusted according to the shape of the water storage chamber 11 and the structure of the water absorbing and ventilating member 20.

According to an embodiment of the supporting member 30 of the present invention, referring to fig. 2 and 7, the supporting member 30 may include a mounting bracket 31 and a supporting bracket 32 connected above the mounting bracket 31, the supporting member 30 is mounted at the bottom of the water storage chamber 11 through the mounting bracket 31, and the water absorbing air-permeable member 20 is supported on the supporting bracket 32.

Further, as shown in fig. 2-3 and 6-7, the mounting frame 31 may be a plate shape matching with the circumferential contour of the water storage cavity 11, the supporting frame 32 is a column shape extending upward from the mounting frame 31, and the bottom of the column of the water absorbing and ventilating member 20 is open and is sleeved outside the supporting frame 32.

Wherein, as shown in the figure, when the circumference profile of water storage chamber 11 is circular, mounting bracket 31 is discoid, and the bottom surface of mounting bracket 31 and the laminating of the diapire in water storage chamber 11, the laminating of the peripheral wall in the outer peripheral face of mounting bracket 31 and water storage chamber 11 to the installation that realizes in water storage chamber 11 is fixed.

It should be noted that the mounting frame 31 is preferably detachably mounted in the water storage cavity 11, for example, by means of shape fitting as described above, so as to facilitate maintenance and replacement of the water absorbing air-permeable member 20 and the supporting member 30. The absorbent breather 20 is preferably removably supported on the support frame 32, such as by telescoping as described above, to facilitate maintenance and replacement of the absorbent breather 20.

Further, as shown in fig. 6 and 7, the mounting bracket 31 may include an inner ring 311, an outer ring 312 disposed outside the inner ring 311 at intervals, and a plurality of connecting ribs 313 connected between the inner ring 311 and the outer ring 312 and arranged at intervals along the circumferential direction; the support frame 32 can include the upper ring 321 and the lower ring that set up at the upper and lower interval to and connect in a plurality of brace rods 322 that arrange along circumference interval between upper ring 321 and the lower ring, wherein: the lower ring is connected to the inner ring 311, or the lower ring is the inner ring 311.

Wherein, through with a plurality of splice bars 313 that the cylinder corresponds set up to arrange along circumference interval, can support reduce the air current resistance in the cylinder, guarantee the high efficiency that gas flows, improve cold evaporation effect. In addition, the supporting component 30 with the above arrangement can reduce the material consumption, reduce the manufacturing cost and reduce the weight of the humidifier.

In order to further enhance the reliability of the combination of the cylinder and the support frame 32, referring to fig. 4 and 5, a plurality of grooves 23 for the connection ribs 313 to be embedded may be further provided at intervals along the circumferential direction at the bottom end of the cylinder, and the plurality of grooves 23 correspond to the plurality of connection ribs 313 one to one. Through the arrangement, the cylinder can further extend to the bottom of the water storage cavity 11.

In the above, as shown in fig. 2, the cylinder of the water-absorbing air-permeable component 20 is completely fitted outside the supporting frame 32, and the supporting frame 32 can completely support the whole cylinder, so that the water-absorbing air-permeable component 20 is immersed at the bottom of the water storage cavity 11, thereby reducing the volume of the water tank 10.

In addition, it will be appreciated that the support bracket 32 is provided with an opening for insertion of the air inlet conduit 12, which corresponds to the opening 22.

According to the utility model, the support frame 32 and the water-absorbing and air-permeable component 20 are arranged in a cylindrical shape, the air inlet pipe 12 is inserted in the axial direction, the air entering the air chamber 21 can penetrate through the water-absorbing and air-permeable component for 360 degrees to be diffused outwards into the water storage cavity 11 (see figure 9), the air flow is stable, free of fluctuation and turbulence, and uniform in humidification.

In the present invention, in order to facilitate the installation of the supporting member 30, the supporting member 30 may further be provided with a guide 314 for guiding the supporting member 30 to be installed in the water storage chamber 11.

Specifically, as shown in fig. 7, the guide portion 314 may be a chamfer formed at the outer peripheral edge of the outer ring 312.

According to another embodiment of the water absorbing and ventilating member 20 of the present invention, referring to fig. 10, the water absorbing and ventilating member 20 may further include an annular extension portion 24 extending horizontally outward from the top circumference of the cylinder, the outer circumferential surface of the annular extension portion 24 is closely attached to the circumferential wall of the water storage chamber 11, and the air outlet pipe 13 is communicated with the water storage chamber 11 above the annular extension portion 24. By arranging the annular extension part 24, the water retention volume of the water absorption ventilating part 20 can be increased, and the air passing area is increased. As shown in fig. 11, the air flow passes through the water-absorbing air-permeable member 20 twice (first through the cylinder and second through the annular extension 24), so that the humidification effect is better.

In the utility model, the air inlet pipe 12 and the air outlet pipe 13 can be arranged in various ways, the air inlet pipe 12 only needs to be capable of introducing air into the air chamber 21 of the water absorption and ventilation part 20, and the air outlet pipe 13 only needs to be capable of discharging humidified air in the water storage cavity 11. In addition, the inlet pipe 12 and the outlet pipe 13 can be respectively arranged to be connected with other corresponding components according to different fields of use of the humidifier.

In order to extend the flow path of the air in the water storage chamber 11 and further improve the humidification effect, as shown in fig. 1-3, the air inlet pipe 12 preferably extends from the top to the lower part of the water tank 10, the air outlet pipe 13 is preferably disposed at the top of the water tank 10, and the air inlet end of the air inlet pipe 12 (i.e., the upper end of the air inlet pipe 12 shown in fig. 2) is disposed opposite to the air outlet end of the air outlet pipe 13 (i.e., the left end of the air outlet pipe 13 shown in fig. 2). In use, referring to fig. 8 or 11, after the air is fed into the air chamber 21 located at the lower part of the water storage cavity 11 by the air inlet pipe 12, the air flows through the water-absorbing air-permeable member 20, then flows upwards, and finally is discharged through the air outlet pipe 13.

In the present invention, the water tank 10 may be an integrated type or a separated type. In order to facilitate the assembly and disassembly of the water absorbing air-permeable member 20 and the support member 30, the water tank 10 is preferably split. Specifically, as shown in fig. 12, the water tank 10 may include a tank body 14 having a top opening, a cover 15 detachably provided at the top opening, and a sealing member 16 provided between the cover 15 and the tank body 14.

The sealing member 16 may be a rubber or silicone gasket. The detachable connection between the housing 14 and the cover 15 may be achieved by any suitable structure, such as a rotating snap structure, a snap structure, or a flange and groove mating snap cover structure.

According to one embodiment of the present invention, as shown in fig. 12, the box 14 and the cover 15 are detachably connected by a snap structure. The buckle structure includes a first buckle 141 disposed on the case 14 and a second buckle 151 disposed on the cover 15 and adapted to the first buckle 141.

Further, as shown in fig. 12, the first catch 141 is a projection provided on the outer peripheral surface of the case 14 and extending in the circumferential direction of the case 14, and the second catch 151 is an annular flange attached to the inner side surface of an annular wall of the bottom end of the lid 15 and extending in the circumferential direction of the lid 15. The surfaces of the bulge and the annular flange which are correspondingly clamped are planes.

It should be noted that the annular wall is provided to provide a deformation space for the annular flange, so that the annular flange can be conveniently clamped with the protrusion.

The humidifier of the utility model has the following advantages:

the structure is simple, the failure rate is low, the safety and the reliability are realized, and the service life is long;

the water absorption and ventilation component can be replaced regularly, so that the aging and health problems are avoided;

no need of heating and no scale;

no temperature difference and no condensed water are generated;

the diameter of the water particles of cold evaporation is very small, and water mist can not be seen completely;

the air entering the air chamber of the water absorption and ventilation component can diffuse outwards for 360 degrees, the efficiency is high, no water mist is condensed, and the humidification is more uniform.

The ventilation treatment equipment can be an oxygen therapy instrument or a respirator and the like.

For example, in a breathing machine, the breathing machine generally comprises a main machine, a breathing mask and a breathing pipeline for communicating an air outlet of the main machine with the breathing mask, the humidifier can be arranged in the main machine as a part of the main machine, in this case, an air inlet pipe 12 of the humidifier is communicated with an air outlet of a fan in the main machine, and an air outlet pipe 13 of the humidifier is communicated with the air outlet of the main machine; the humidifier can also be arranged independently of the host, in this case, the air inlet pipe 12 of the humidifier can be communicated with the air outlet of the host, the air outlet pipe 13 of the humidifier is communicated with the breathing pipeline, namely, the humidifier is connected between the host and the breathing pipeline, and certainly, the humidifier can also be connected between the breathing pipeline and the breathing mask.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the utility model. The utility model is not described in detail in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. The utility model provides a humidifier, its characterized in that, the humidifier is in including water tank (10) that has water storage chamber (11) and setting water absorption air permeable component (20) in water storage chamber (11), water tank (10) are provided with intake pipe (12) and outlet duct (13), the part of water absorption air permeable component (20) is located below the water level in water storage chamber (11), water absorption air permeable component (20) inside is injectd there is gas chamber (21), the end of giving vent to anger of intake pipe (12) inserts in gas chamber (21) and be located the water level top in water storage chamber (11), outlet duct (13) with outside water absorption air permeable component (20) water storage chamber (11) intercommunication.

2. The humidifier according to claim 1,

the water absorption and ventilation part (20) comprises a hollow cylinder, the inner cavity of the cylinder is the gas chamber (21), and the top of the cylinder is provided with an opening (22) for inserting the gas inlet pipe (12); and/or

The humidifier comprises a supporting component (30), wherein the supporting component (30) is arranged in the water storage cavity (11) and is used for supporting the water absorption and ventilation component (20).

3. The humidifier according to claim 2,

the supporting component (30) is provided with a guide part (314) for guiding the supporting component (30) to be installed in the water storage cavity (11); and/or

The supporting component (30) comprises a mounting rack (31) and a supporting frame (32) connected above the mounting rack (31), the supporting component (30) is installed at the bottom of the water storage cavity (11) through the mounting rack (31), and the water-absorbing and air-permeable component (20) is supported on the supporting frame (32).

4. The humidifier according to claim 3,

the mounting rack (31) is in a disc shape matched with the circumferential profile of the water storage cavity (11), the supporting frame (32) is in a column shape extending upwards from the mounting rack (31), and the bottom of the cylinder is open and sleeved outside the supporting frame (32); and/or

The water absorption and ventilation part (20) comprises an annular extension part (24) extending outwards from the top end periphery of the cylinder along the horizontal direction, the peripheral surface of the annular extension part (24) is tightly attached to the peripheral wall of the water storage cavity (11), and the air outlet pipe (13) is communicated with the water storage cavity (11) above the annular extension part (24).

5. The humidifier according to claim 4, wherein the mounting frame (31) comprises an inner ring (311), an outer ring (312) which is sleeved outside the inner ring (311) at intervals, and a plurality of connecting ribs (313) which are connected between the inner ring (311) and the outer ring (312) and are arranged at intervals along the circumferential direction; support frame (32) including last circle (321) and the lower circle that the interval set up from top to bottom, and connect in go up circle (321) with a plurality of brace rod (322) that arrange along circumference interval between the circle down, wherein:

the lower ring is connected to the inner ring (311), or the lower ring is the inner ring (311).

6. The humidifier according to claim 5, wherein the guide portion (314) is a chamfer formed at an outer peripheral edge of the outer ring (312).

7. The humidifier according to claim 5, wherein a plurality of grooves (23) for embedding the connecting ribs (313) are arranged at intervals along the circumferential direction at the bottom end of the cylindrical body, and the plurality of grooves (23) correspond to the plurality of connecting ribs (313) in a one-to-one mode.

8. The humidifier according to claim 1,

the air inlet end of the air inlet pipe (12) and the air outlet end of the air outlet pipe (13) are both positioned at the top of the water tank (10) and are arranged in a reverse direction, and/or

The water-absorbing and air-permeable component (20) is made of fiber materials, cotton or water-absorbing paper.

9. A humidifier according to any one of claims 1-8, wherein the water tank (10) comprises an open-topped tank body (14), a cover (15) removably covering the open-topped tank body, and a seal (16) provided between the cover (15) and the tank body (14).

10. A ventilation therapy device, characterized in that it comprises a humidifier according to any one of claims 1-9.