CN111494775A

CN111494775A - Humidifier and ventilation treatment equipment

Info

Publication number: CN111494775A
Application number: CN202010339491.8A
Authority: CN
Inventors: 刘丽君; 庄志
Original assignee: BMC Medical Co Ltd
Current assignee: BMC Medical Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-08-07

Abstract

The invention relates to the field of breathing equipment, and discloses a humidifier and a ventilation treatment equipment, which comprises a water tank provided with an air inlet and an air outlet, a sealing element and a driving element at least partially arranged in the water tank, wherein the bottom of the water tank is provided with a water outlet, the sealing element is connected to the driving element, the driving element can drive the sealing element to move between a first position and a second position, the sealing element seals the water outlet at the first position, and the sealing element opens the water outlet at the second position. Through above-mentioned technical scheme, allow the user under the condition of not inclining or not upset water tank, open the outlet of bottom through the driving piece in the operation water tank to with the water discharge in the water tank, improved the convenience, avoid remaining water to deposit the overlength time in the water tank, guarantee that the water tank is in clean state when the standby.

Description

Humidifier and ventilation treatment equipment

Technical Field

The invention relates to the field of breathing equipment, in particular to a humidifier and to ventilation treatment equipment.

Background

In treatment sleep apnea syndrome, the attention degree of the humidifier of breathing machine is higher and higher, and the patient is also higher and higher to the requirement of suitability and comfort level, and the temperature humid gas that the humidifier provided makes the patient reduce cold dry gas to the stimulation of nasal cavity, respiratory mucosa to the humidifying sputum promotes the sputum excretion, guarantees that the patient inhales the gaseous warmth and moist of internal, promotes user experience.

The inventor of this scheme discovers, there are more shortcomings in current humidifier for breathing machine:

1) a typical humidifier water tank is provided with only a filler opening, i.e. the water in the default tank will be used until it is used up. However, in some cases, only a part of water in the water tank is used by a patient, the rest water is always remained in the water tank, the water tank is kept in a wet state for a long time, and if the water is not completely poured from the water filling port, the remained water can cause germs to grow in the water tank, so that the patient has nasal cavity stuffiness discomfort, allergy, sneeze and even causes respiratory tract infection and pneumonia when the patient uses the water again; in addition, when the patient goes out with the respirator, the residual water in the water tank shakes during the transportation or transportation process to cause the water to flow back into the main engine of the respirator, so that the main engine fails;

2) the heating mode of the humidifier for the respirator basically adopts a bottom plate local heating mode, the heating area is only one part or a local area of the bottom of the water tank, the heating efficiency is low, the heating performance is poor, waiting time exists, and the patient experience is poor;

3) the water tank of the humidifier adopts an independent space integrated design, so that the water quantity used in one period is in the independent space of the water tank, and the water quantity is large, the heating time is long, the humidity saturation is slow, and the usability is poor.

Disclosure of Invention

The invention aims to provide a humidifier to solve the problem that residual water in the humidifier is difficult to discharge.

In order to achieve the above object, the present invention provides, in one aspect, a humidifier including a water tank provided with an air inlet and an air outlet, a sealing member, and a driving member at least partially disposed in the water tank, a water outlet being provided on a bottom of the water tank, the sealing member being connected to the driving member, the driving member being capable of driving the sealing member to move between a first position in which the sealing member seals the water outlet and a second position in which the sealing member opens the water outlet.

Optionally, the tank includes a top wall, a bottom wall and side walls, the bottom wall having the drain opening disposed thereon.

Optionally, the humidifier comprises a resilient member located between the water tank and the drive member, the resilient member being resiliently operable on the drive member to drive the sealing member towards the first position by the drive member.

Optionally, a partition plate is disposed inside the water tank, and the partition plate divides the water tank into an upper water storage area and a lower heating area, and the water storage area and the heating area are communicated with each other.

Optionally, the driving member is rod-shaped, the driving member passes through the top of the water tank and extends towards the bottom of the water tank, a first through hole for the driving member to pass through is formed in the top of the water tank, a second through hole for the driving member to pass through is formed in the partition plate, a sealing pipe in sealed communication with the first through hole and the second through hole is connected between the top of the water tank and the partition plate, and the driving member passes through the sealing pipe and extends to the water outlet.

Optionally, a stopping portion is disposed on the driving member, and the elastic member is located between the stopping portion and the partition plate and/or between the stopping portion and the top of the water tank.

Optionally, the outer surface of the top of the tank is provided with a handle for lifting the tank.

Optionally, the handle includes a tube cavity, a vertical portion and a horizontal portion connected to an upper end of the vertical portion, the tube cavity is disposed through the vertical portion and communicated with the first through hole, and the driving member is accommodated in the tube cavity.

Optionally, the sealing element is a sealing ring sleeved on the driving element, and the driving element can be inserted into the water outlet and move along the length direction of the driving element.

Optionally, the inner surface of the bottom wall is a conical recessed surface, and the drain opening is provided at the lowest point of the inner surface of the bottom of the tank.

Optionally, the roof is provided with the water filling port that can open and close, the division board is provided with the intercommunication the water storage district with the trompil of the district of heating, the lower surface of division board be connected with the water injection pipe of trompil intercommunication, the free end of water injection pipe with the bottom interval of water tank.

Optionally, the surface of the partition plate facing the water storage region includes a recessed region and a recessed tapered surface surrounding the recessed region, and the opening is disposed in the recessed region.

Optionally, the air inlet and the air outlet are disposed on a top of the water tank, and the water tank includes an air inlet pipe passing through the air inlet and the partition plate, and an air outlet pipe passing through the air outlet and the partition plate.

Optionally, the humidifier further comprises a heated base on which the water tank can be disposed, the heated base being provided with a drainage channel that can be aligned with the drainage opening.

Optionally, the heating base includes a heating bottom plate attached to the bottom wall and a heating side plate attached to a portion of the side of the water tank corresponding to the heating area.

In another aspect, the invention also provides a ventilation therapy device, wherein the ventilation therapy device comprises the humidifier according to the scheme.

Through above-mentioned technical scheme, allow the user under the condition of not inclining or not upset water tank, open the outlet of bottom through operating driving piece in the water tank to with the log raft play in the water tank, improved the convenience, avoid remaining water to deposit the overlength time in the water tank, guarantee that the water tank is in clean state when the standby, the removal of the humidifier of being convenient for simultaneously is used, improves the portability.

Drawings

FIG. 1 is a perspective view of a humidifier according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a humidifier according to an embodiment of the present invention;

FIG. 3 is a cross-sectional exploded view of a humidifier according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a humidifier according to an embodiment of the invention, with arrows showing the direction of airflow;

fig. 5 is a partial cross-sectional view of a humidifier according to an embodiment of the invention, with arrows showing the direction of water flow.

Description of the reference numerals

100 tank 101 ceiling

102 bottom wall 103 side wall

104 inlet 105 outlet

106 outlet 107 inlet pipe

108 outlet pipe 109 division plate

110 water storage area 111 heating area

112 first through hole 113 second through hole

114 sealing tube 115 handle

116 vertical part 117 horizontal part

118 lumen 119 water injection port

120 trompil 121 water injection pipe

122 stopper

200 driver 201 operation part

202 stop 203 elastic element

300 sealing element

400 heating base 401 drainage channel

402 heating bottom plate 403 heating side plate

Detailed Description

The following detailed description of embodiments of the invention 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.

The present embodiment provides a humidifier for use in a ventilation therapy apparatus, wherein referring to fig. 1-5, the humidifier provided in the present embodiment comprises a water tank 100 provided with an air inlet 104 and an air outlet 105, a sealing member 300 and a driving member 200 at least partially disposed in the water tank, the bottom of the water tank 100 is provided with a water outlet 106, the sealing member 300 is connected to the driving member 200, the driving member 200 can drive the sealing member 300 to move between a first position and a second position, in the first position, the sealing member 300 seals the water outlet 106, and in the second position, the sealing member 300 opens the water outlet 106.

The humidifier can humidify the gas to increase the humidity of the gas, for example, the humidifier can humidify the gas provided by a respirator. Wherein, as shown in fig. 3, the humidifier comprises a water tank 100, the water tank 100 is provided with an air inlet 104 and an air outlet 105 to allow air to enter and leave the water tank 100, the water tank 100 can be used for containing water, and the air from the air inlet 104 can enter the water tank to be humidified and then be discharged from the air outlet 105.

The bottom of the water tank is provided with a water outlet 106, which can allow the residual water to be discharged, so that the residual water is prevented from being stored for too long in the next use, and the water outlet 106 can be sealed by a sealing member 300. The sealing member 300 is movable by actuation of the actuator 200 between a first position in which the sealing member 300 seals the drain opening 106 and a second position in which the sealing member 300 remains in the first position during normal use; in the second position, the sealing member 300 is at least partially removed from the drain opening 106 to open the drain opening 106 to allow water to drain from the interior of the tank 100, and the actuating member 200 is operable to open the drain opening 106 when water is desired to be drained from the interior of the tank 100.

The driving member 200 may include a portion located outside the top portion, i.e., extending from the outside of the top portion to the inside of the water tank through the top portion, and the portion of the driving member 200 located outside the top portion may be used as an operation portion 201, and by performing a related operation on the operation portion 201, the driving member 200 may be moved to drive the sealing member 300 to move, so as to seal or open the water outlet 106.

In addition, regarding the driving member 200, especially the operation portion 201, the operation portion 201 is located at the outer side of the top portion, and is located at a position where the user can easily touch the operation portion, and the operation manner may be various, for example, pressing, pushing, pulling, etc. along a straight line, or rotating, toggling, etc. by performing an operation on the operation portion 201, the driving member 200 may be moved, so as to drive the sealing member 300 to move between the first position and the second position, so as to seal or open the water outlet 106.

In this structure, the opening of the water outlet 106 at the bottom of the water tank 100 can be realized by operating the operating part 201 on the top of the water tank 100, the water tank 100 does not need to be inclined or even turned over, the operation is simple, the water in the water tank 100 can be conveniently discharged in time, and the problem of host fault caused by the water poured into the host is also avoided.

Specifically, the tank 100 includes a top wall 101, a bottom wall 102, and a side wall 103, with a drain opening 106 disposed in the bottom wall 102. The water tank 100 is mainly enclosed by a top wall 101, a bottom wall 102 and a side wall 103, the bottom wall 102 is located at the bottom and is provided with a water outlet 106, the top wall 101 is located at the top of the water tank, a driving member 200 can penetrate the top wall 101 from the outside of the top wall 101 and extend to the bottom wall 102, and a sealing member 300 is connected to one end of the driving member 200 close to the bottom wall 102. The water tank 100 may have any shape and is not limited to the cylindrical shape shown in the drawings.

In addition, the humidifier comprises a resilient member 203 located between the water tank 100 and the driving member 200, the resilient member 203 being capable of resiliently acting on the driving member 200 to drive the sealing member 300 towards the first position by the driving member 200. The elastic member 203 may be disposed between a portion of the water tank 100 and the driving member 200, which is in an elastically expanded or compressed state, and may apply an elastic force (pushing or pulling force) to the driving member 200, so that the driving member 200 drives the sealing member 300 to move to the first position, i.e., the sealing member 300 is maintained at the position for sealing the water discharge opening 106 by the elastic member 203, and when the water discharge opening 106 needs to be opened, the elastic force of the elastic member 203 needs to be overcome to operate the driving member 200.

In addition, as shown in fig. 2 to 5, the water tank 100 includes an inner portion provided with a partition plate 109, the partition plate 109 partitions the water tank 100 into an upper water storage region 110 and a lower heating region 111, and the water storage region 110 and the heating region 111 communicate with each other. The volume of the water storage region 110 may be relatively large and the volume of the heating region 111 may be relatively small, which allows the heating region 111 of the water tank 100 to be heated with a relatively small amount of water, so long as a single humidification amount is satisfied, which can increase the heating speed and save energy. The partition plate 109 may be provided with an opening or the like to allow the water storage region 110 and the heating region 111 to communicate.

Specifically, the driving member 200 is rod-shaped, the driving member 200 extends through the top (e.g., the top wall 101) of the water tank 100 toward the bottom (e.g., the bottom wall 102) of the water tank 100, a first through hole 112 is formed in the top wall 101 for the driving member 200 to pass through, a second through hole 113 is formed in the partition plate 109 for the driving member 200 to pass through, a sealing tube 114 is connected between the top wall 101 and the partition plate 109 and is in sealed communication with the first through hole 112 and the second through hole 113, and the driving member 200 passes through the sealing tube 114 and extends to the water outlet 106. Referring to fig. 2 to 5, the driving member 200 is substantially rod-shaped, and extends from the outside of the top wall 101 to the bottom wall 102, the top wall 101 is provided with a first through hole 112, the partition plate 109 is provided with a second through hole 113, and a sealing pipe 114 is connected between the top wall 101 and the partition plate 109, both ends of the sealing pipe 114 are communicated with the first through hole 112 and the second through hole 113, such that the water storage area 110 and the first through hole 112 and the second through hole 113 are isolated from each other, the first through hole 112 and the second through hole 113 are sealed in the water storage area 110 by the sealing pipe 114, that is, water in the water storage area 110 does not leak from the first through hole 112 and the second through hole 113, and the driving member 200 extends into the heating area 111 through the first through hole 112, the sealing pipe 114 and the second through hole 113, and can be inserted into the water outlet 106, as. In other embodiments, the sealing between the driver 200 and the top wall 101 and the divider plate 109 may be achieved by sealing rings or the like.

Further, a stopper 202 is disposed on the driving member 200, and the elastic member 203 is located between the stopper 202 and the separating plate 109 and/or between the stopper 202 and the top wall 101. Referring to fig. 3 to 5, the inner diameter of the sealing tube 114 is larger than the inner diameters of the first through hole 112 and the second through hole 113, the outer diameter of the stopper 202 is larger than the inner diameters of the first through hole 112 and the second through hole 113, a portion of the edge of the first through hole 112 and a portion of the edge of the second through hole 113 are within a range surrounded by the sealing tube 114, and the outer diameter of the stopper 202 on the outer circumference of the driver 200 is larger than the inner diameters of the first through hole 112 and the second through hole 113, so that the stopper can be stopped on the portion of the edge of the first through hole 112 or the portion of the edge of the second through hole 113 to limit the moving range of the driver 200. The elastic member 203, such as a spring, is disposed between the stopper 202 and the top wall 101 and/or between the stopper 202 and the partition plate 109, and when the driving member 200 is not pressed, the spring can reset the driving member 200 to be maintained at a specific position, so that the sealing member 300 is in a state of sealing the drain opening 106.

In addition, the outer surface of the top wall 101 is provided with a handle 115 for lifting the water tank 100. The handle 115 may serve as a grip for lifting the water tank 100 to facilitate easy lifting and moving of the water tank 100. In particular, the handle 115 is provided with a lumen 118 aligned and communicated with the first through hole 112, the driving member 200 passes through the lumen 118 and protrudes from the top of the handle 115, and the protruding portion may be the above operation portion 201, and the driving member 200 can be operated when a user lifts the handle 115 to open the water outlet 106, i.e. the water outlet 106 can be opened to discharge the remaining water when the user lifts the water tank 100 with one hand.

Further, the handle 115 includes a lumen 118, a vertical portion 116 and a horizontal portion 117 connected to an upper end of the vertical portion 116, the lumen 118 is penetratingly disposed in the vertical portion 116 and communicates with the first through hole 112, and the driving member 200 is received in the lumen 118. Referring to fig. 3, the handle 115 is generally formed in a T-shape as a whole, including a vertical portion 116 and a horizontal portion 117. The vertical portion 116 is provided therein with the above-mentioned lumen 118 through which the driving member 200 passes, the driving member 200 may protrude upward from the lumen 118, the user may grip the horizontal portion 117 to lift the water tank 100, and the driving member 200 may be operated by a thumb.

The sealing member 300 is a sealing ring sleeved on the driving member 200, and the driving member 200 can be inserted into the water outlet 106 and move along the length direction thereof. The sealing member 300 is fitted over the outer circumference of the driving member 200, the driving member 200 can be inserted into the water discharge opening 106 to seal the water discharge opening 106 by a sealing ring, and by pressing the operation portion 201 of the driving member 200, the driving member 200 is moved downward, and the sealing ring is moved away from the water discharge opening 106 to open the water discharge opening 106. In other embodiments, the sealing member 300 may be a sealing piston attached to the driving member 200, which may be inserted into the drain opening 106 to effect sealing.

In addition, the inner surface of the bottom wall 102 is a tapered concave surface, and the drain opening 106 is provided at the lowest point of the inner surface of the bottom wall 102. Referring to fig. 4 and 5, the inner surface of the bottom wall 102 is in the form of a conical depression, wherein the conical point is the lowest point, and the drain opening 106 is disposed at the lowest point so that water therein converges toward the lowest point, thereby allowing the water therein to be more thoroughly drained through the drain opening 106. In other embodiments, the bottom wall 102 may be a concave surface of other forms, such as a spherical surface, a V-groove surface, etc., as long as there is a lowest point that can completely drain water.

Specifically, the top wall 101 is provided with a water injection port 119 capable of being opened and closed, the partition plate 109 is provided with an opening 120 communicating the water storage region 110 and the heating region 111, a water injection pipe 121 communicating with the opening 120 is connected to the lower surface of the partition plate 109, and the free end of the water injection pipe 121 is spaced from the bottom wall 102. Water can be added to the water tank 100 through the water injection port 119, and the port 119 can be sealed by a movable plug 122; as described above, the partition plate 109 may partition the water tank into the water storage region 110 and the heating region 111, where the partition plate 109 is provided with the opening 120, and the water injection pipe 121 is connected to the lower surface of the partition plate 109, and water discharged downward through the opening 120 may enter the heating region 111 through the water injection pipe 121; specifically, when the water in the heating zone 111 just exceeds the lower outlet of the water injection pipe 121, the water can seal the lower outlet of the water injection pipe 121, and the water storage zone 110 is in a sealed state (the water injection port 119 is closed), at which time the water in the water storage zone 110 is no longer continuously injected into the heating zone 111 under the action of the air pressure in the heating zone 111. Therefore, the outlet position of the lower end of the water injection pipe 121 can be used as a water level standard line in the heating area 111, so that the water level standard line is a gas space above the water level standard line, and gas needing humidification is allowed to flow through.

Wherein the surface of the partition plate 109 facing the water storage region 110 includes a recessed region where the opening 120 is provided and a recessed tapered surface surrounding the recessed region. In a surface of the partition plate 109 facing the water storage region 110, a depression region is at the lowest point, and the opening 120 is provided in the depression region so that the water storage region 110 may be entirely injected into the heating region 111 through the opening 120, particularly, the depression region may be formed at a central position of the partition plate 109, and the partition plate 109 is formed at a circumference of the depression region as a tapered surface whose height is continuously decreased in a radial direction from an edge to a center, and when there is less water therein, the water may be collected into the depression through the tapered surface.

The top wall 101, the bottom wall 102, the side wall 103, the partition plate 109 and the water injection pipe 121 of the water tank 100 can be integrally formed, so that the heating and manufacturing are facilitated, the sealing performance is improved, the whole structure is compact, and the volume is small.

Further, an air inlet 104 and an air outlet 105 are provided on the top wall 101, and the water tank 100 includes an air inlet pipe 107 passing through the air inlet 104 and a partition plate 109, and an air outlet pipe 108 passing through the air outlet 105 and the partition plate 109. Referring to fig. 4 and 5, an inlet pipe 107 and an outlet pipe 108 are communicated with the heating area 111 through the top wall 101 and the partition plate 109, and the gas to be humidified is introduced into the heating area 111 through the inlet pipe 107, flows on the upper portion of the heated water, and is then discharged through the outlet pipe 108, thereby humidifying the gas. In other embodiments, the air inlet 104 and outlet 105 may be provided on the side wall 103 of the heating zone 111, with the corresponding air inlet 107 and outlet 108 tubes also provided on the side wall 103, without passing through the top wall 101 and the divider plate 109.

In addition, referring to fig. 1-4, the humidifier further comprises a heated base 400, the water tank 100 can be arranged on the heated base 400, and the heated base 400 is provided with a drainage channel 401 which can be aligned with the drainage opening 106. The heating base 400 may perform a heating process on the water tank 100, for example, may heat the heating area 111; in particular, when the drain channel 401 is aligned with the drain opening 106, residual water on the heating base 400 can be drained to avoid accumulation of water drained from the water tank 100 on the heating base 400. Of course, the drain channel 401 mainly deals with a small amount of leaked water, rather than serving as a dedicated drain member, and if a large amount of water in the water tank 100 needs to be drained, the water tank 100 may be lifted from the heating base 400 and drained.

Further, the heating base 400 comprises a heating bottom plate 402 and a heating side plate 403, specifically, the heating bottom plate 402 is designed to be a conical concave structure adapted to the shape of the bottom wall 102, so that the heating bottom plate 402 is attached to the bottom wall 102, and the structure can increase the contact area of the heating zone 111 with water in a limited space; the heating side plate 403 is attached to a portion of the side wall 103 corresponding to the heating region 111. The heating bottom plate 402 and the heating side plate 403 are both parts capable of generating heat, and the heating bottom plate 402 and the heating side plate 403 surround the heating area 111 of the water tank 100, so that the heating area 111 can be heated more comprehensively, and the heating speed is increased. A resistance heating member may be provided in the heating bottom plate 402 and the heating side plate 403 to achieve heating. Accordingly, the bottom wall 102 may be made of a material capable of conducting heat, such as a metal material, and the portion of the side wall 103 corresponding to the heating side plate 403 may also be made of a material capable of conducting heat, such as a metal material; other parts of the water tank 100 may be made of a material having good heat insulation properties to prevent heat from being dissipated.

In another aspect, the present embodiment also provides a ventilation therapy device, wherein the ventilation therapy device comprises the humidifier of the above scheme. The ventilation treatment equipment comprises a host machine and a humidifier, wherein the humidifier can humidify the gas provided by the host machine.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. A humidifier, characterized in that the humidifier comprises a water tank (100) provided with an air inlet (104) and an air outlet (105), a sealing member (300) and a driving member (200) at least partially arranged in the water tank (100), a water outlet (106) is arranged at the bottom of the water tank (100), the sealing member (300) is connected to the driving member (200), the driving member (200) can drive the sealing member (300) to move between a first position where the sealing member (300) seals the water outlet (106) and a second position where the sealing member (300) opens the water outlet (106).

2. The humidifier according to claim 1, comprising a resilient member (203) between the water tank (100) and the driving member (200), the resilient member (203) being resiliently actable on the driving member (200) to drive the sealing member (300) towards the first position by the driving member (200).

3. A humidifier according to claim 2, wherein the inside of the water tank (100) is provided with a partition plate (109), the partition plate (109) dividing the water tank (100) into an upper water storage region (110) and a lower heating region (111), the water storage region (110) and the heating region (111) being in communication with each other.

4. The humidifier according to claim 3, wherein the driving member (200) is rod-shaped, the driving member (200) extends through the top of the water tank (100) towards the bottom of the water tank (100), a first through hole (112) for the driving member (200) to pass through is provided on the top of the water tank (100), a second through hole (113) for the driving member (200) to pass through is provided on the partition plate (109), a sealing tube (114) hermetically communicating with the first through hole (112) and the second through hole (113) is connected between the top of the water tank (100) and the partition plate (109), and the driving member (200) passes through the sealing tube (114) and extends to the water outlet (106).

5. A humidifier according to claim 3, wherein a stop (202) is provided on the drive member (200), and the resilient member (203) is located between the stop (202) and the divider plate (109) and/or between the stop (202) and the top of the water tank (100).

6. A humidifier according to claim 4, characterised in that the outer surface of the top of the water tank (100) is provided with a handle (115) for lifting the water tank (100).

7. The humidifier according to claim 6, wherein the handle (115) comprises a lumen (118), a vertical portion (116) and a horizontal portion (117) connected to an upper end of the vertical portion (116), the lumen (118) is penetratingly disposed in the vertical portion (116) and communicated with the first through hole (112), and the driving member (200) is accommodated in the lumen (118).

8. The humidifier according to claim 1, wherein the inner surface of the bottom of the water tank (100) is a conical concave surface, and the drain opening (106) is provided at the lowest point of the inner surface of the bottom of the water tank (100).

9. The humidifier according to claim 3, characterized in that the top of the water tank (100) is provided with a water injection port (119) which can be opened and closed, the partition plate (109) is provided with an opening (120) which communicates the water storage region (110) and the heating region (111), the lower surface of the partition plate (109) is connected with a water injection pipe (121) which communicates with the opening (120), and the free end of the water injection pipe (121) is spaced from the bottom of the water tank (100).

10. The humidifier according to claim 9, wherein the surface of the separation plate (109) facing the water storage region (110) comprises a recessed area and a recessed conical surface surrounding the recessed area, the opening (120) being provided in the recessed area.

11. A humidifier according to claim 3, wherein the air inlet (104) and the air outlet (105) are provided on top of the water tank (100), the water tank (100) comprising an air inlet pipe (107) passing through the air inlet (104) and the partition plate (109), an air outlet pipe (108) passing through the air outlet (105) and the partition plate (109).

12. A humidifier according to claim 1, further comprising a heating base (400), the water tank (100) being arrangeable on the heating base (400), the heating base (400) being provided with a drainage channel (401) which is alignable with the drainage opening (106).

13. The humidifier according to claim 12, wherein the heating base (400) comprises a heating bottom plate (402) and a heating side plate (403), the heating bottom plate (402) is attached to the bottom of the water tank (100), and the heating side plate (403) is attached to the side of the water tank (100) corresponding to the heating area (111).

14. A ventilation therapy device, characterized in that it comprises a humidifier according to any one of claims 1-13.