CN219354996U - Humidification tank - Google Patents

Abstract

The utility model provides a humidification tank, comprising: the tank body is provided with a liquid storage cavity and is provided with a water injection hole communicated with the liquid storage cavity; the inner baffle plate assembly is accommodated in the liquid storage cavity; the floating bottle component is accommodated in the liquid storage cavity; the inner baffle assembly is arranged at intervals with the floating bottle assembly, the tank body is provided with a first positioning structure, the inner baffle assembly is provided with a second positioning structure, the first positioning structure and the second positioning structure are jointly used for positioning the inner baffle assembly, and when water is injected into the tank body, the floating bottle assembly can float to seal the water injection hole. The inner baffle plate assembly is accommodated in the liquid storage cavity, so that the volume of the liquid storage cavity can be reduced by the inner baffle plate assembly; under the condition that the total amount of the heated and evaporated water vapor is certain, the volume of the humidifying tank is reduced, so that the heated gas stays in the humidifying tank to be smaller, the gas can be discharged to the breathing pipe more quickly, and the gas transmission efficiency of the humidifying tank is improved.

Description

Humidification tank

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a humidifying tank.

Background

The humidifying tank is medical consumable matched with the breathing pipeline and the breathing machine, the breathing machine heats water in the humidifying tank to humidify gas in the breathing pipe, so that the gas becomes wet, the stimulation of the gas to mucous membrane is reduced, alveoli are moistened, the activity of the alveoli is increased, and the exchange of the gas is facilitated.

In the related art, because the volume of the tank body of the humidifying tank is large, heated gas is easy to stagnate in the tank body, so that the gas cannot be timely discharged onto the breathing pipe, the gas transmission efficiency of the humidifying tank is low, and the high-flow breathing humidifying treatment method is not beneficial to use.

Disclosure of Invention

The utility model aims to solve the technical problem of low gas transmission efficiency of a humidifying tank in the related art.

In order to solve the technical problems, the utility model provides a humidifying tank, which comprises:

the tank body is provided with a liquid storage cavity and is provided with a water injection hole communicated with the liquid storage cavity;

the inner baffle plate assembly is accommodated in the liquid storage cavity;

the floating bottle component is accommodated in the liquid storage cavity;

the inner baffle assembly is arranged at intervals with the floating bottle assembly, the tank body is provided with a first positioning structure, the inner baffle assembly is provided with a second positioning structure, the first positioning structure and the second positioning structure are jointly used for positioning the inner baffle assembly, and when water is injected into the tank body, the floating bottle assembly can float to seal the water injection hole.

Preferably, the inner baffle assembly comprises a first shell with an inner cavity and a base fixed on the first shell in a covering mode, the first positioning structure comprises a positioning part formed by protruding from the inner wall of the tank body towards the direction of the liquid storage cavity, the second positioning structure comprises a positioning groove arranged on the first shell, and the positioning part stretches into the positioning groove.

Preferably, the cross-sectional shape of the positioning groove includes any one of Y-shape, T-shape, folded line shape, and curved line shape, and the positioning portion is adapted to the positioning groove.

Preferably, the tank body is provided with a bottom wall and a top wall which are oppositely arranged, the base comprises a first bottom cover which is fixed on the first shell in a covering mode, and a bottom column which is fixed on one side, away from the first shell, of the first bottom cover, a gap is reserved between the first shell and the top wall of the tank body, and when water is not injected into the tank body, the bottom column is in contact with the bottom wall of the tank body.

Preferably, the first shell and one side of the first bottom cover, which is close to the floating bottle assembly, are provided with a relief groove, and the depth of the relief groove gradually decreases from the middle part of the relief groove to the end part of the relief groove so as to adapt to the floating bottle assembly.

Preferably, the first shell is provided with a mounting hole communicated with the inner cavity of the first shell, and the inner baffle assembly further comprises filter cotton assembled with the mounting hole in an interference mode.

Preferably, the floating bottle assembly comprises a bottle body, a bottle cap fixed on the bottle body and provided with a bottle opening structure, and a sealing ring sealed and fixed on the bottle opening structure, wherein a guide channel sleeved outside the water injection hole is formed on the inner wall of the tank body, and at least part of the bottle opening structure is connected with the guide channel in a sliding manner;

when water is not injected into the tank body, the bottle body is in contact with the inner wall of the tank body, and the sealing ring and the water injection hole are arranged at intervals; when water is injected into the tank body, the bottle body can float to the sealing ring to seal the water injection hole.

Preferably, the bottle mouth structure comprises an outer peripheral wall fixed on the bottle cap and an inner peripheral wall with one end fixedly connected to the outer peripheral wall and the other end being closed, wherein the outer peripheral wall is far away from one end of the bottle cap and is slidingly assembled with the guide channel, a water passing gap is reserved between the outer peripheral wall and the guide channel, a surrounding cavity of the outer peripheral wall is communicated with an inner cavity of the bottle body, a communicating hole communicated with the surrounding cavity of the outer peripheral wall is arranged at the closed end of the inner peripheral wall, a clamping groove is formed between the outer peripheral wall and the inner peripheral wall at intervals, and the sealing ring is clamped in the clamping groove and seals the communicating hole.

Preferably, one end of the sealing ring, which is far away from the water injection hole, is abutted to the joint of the inner peripheral wall and the outer peripheral wall.

Preferably, the tank body comprises a second shell with the liquid storage cavity, a second bottom cover fixed on the second shell and covering the liquid storage cavity, and a sealing gasket arranged between the second shell and the second bottom cover, and the water injection hole is formed in the second shell.

Compared with the prior art, the humidifying tank has the beneficial effects that: the inner baffle plate assembly is accommodated in the liquid storage cavity, so that the inner baffle plate assembly occupies the volume of the liquid storage cavity, namely, the inner baffle plate assembly can reduce the volume of the liquid storage cavity of the humidifying tank; under the condition that the total amount of the heated and evaporated water vapor gas is certain, the volume of the humidifying tank is reduced, the heated gas stays in the smaller volume of the humidifying tank, so that the pressure born by the heated gas is higher, the heated gas can be discharged onto the breathing pipe more quickly, the gas transmission efficiency of the humidifying tank is improved, and the patient is supplied with high-flow wet and hot oxygen more quickly. Moreover, the inner baffle assembly is positioned in the liquid storage cavity through the first positioning structure and the second structure, and the inner baffle assembly and the floating bottle assembly are arranged at intervals, so that the inner baffle assembly can not interfere the floating of the floating bottle assembly, and the floating bottle assembly can smoothly float to the plugging water injection hole.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings may be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a humidification tank of an embodiment of the present utility model;

FIG. 2 is a top view of a humidification tank of an embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 2;

fig. 5 is an enlarged view of detail C in fig. 4;

FIG. 6 is an exploded view of a humidification tank of an embodiment of the present utility model;

FIG. 7 is an exploded view of an inner baffle assembly in a humidification tank of an embodiment of the utility model;

FIG. 8 is an exploded view of a floating bottle assembly in a humidification tank of an embodiment of the utility model;

FIG. 9 is a schematic diagram of a second housing structure in a humidification tank of an embodiment of the utility model.

In the drawings, each reference numeral denotes: 1. a tank body; 11. a second housing; 111. a water injection hole; 112. a guide channel; 113. a ventilation interface; 12. a second bottom cover; 13. a sealing gasket; 14. a liquid storage cavity; 2. an inner baffle assembly; 21. a first housing; 211. a mounting hole; 22. a base; 221. a first bottom cover; 222. a bottom post; 23. a relief groove; 24. filtering cotton; 3. a floating bottle assembly; 31. a bottle body; 32. a bottle cap; 321. a bottle mouth structure; 3211. an outer peripheral wall; 3212. an inner peripheral wall; 3213. a communication hole; 3214. a clamping groove; 33. a seal ring; 4. a positioning part; 5. a positioning groove; 6. and a water injection gun head.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" or "a number" means two or more, unless specifically defined otherwise.

Examples:

referring to fig. 1 to 9, an embodiment of the present utility model provides a humidification tank, which includes a tank body 1, an inner baffle assembly 2, and a floating bottle assembly 3, wherein the tank body 1 has a liquid storage cavity 14, and the tank body 1 is provided with a water injection hole 111 communicating with the liquid storage cavity 14; the inner baffle plate assembly 2 is accommodated in the liquid storage cavity 14; the floating bottle assembly 3 is accommodated in the liquid storage cavity 14; wherein, interior baffle subassembly 2 and the interval of floating bottle subassembly 3 set up, and jar body 1 is equipped with first location structure, and interior baffle subassembly 2 is equipped with second location structure, and first location structure and second location structure are used for location in baffle subassembly 2 jointly, and when the water injection in jar body 1, floating bottle subassembly 3 can float to shutoff water injection hole 111.

It should be appreciated that, since the inner baffle plate assembly 2 is accommodated in the liquid storage cavity 14, the inner baffle plate assembly 2 occupies the volume of the liquid storage cavity 14, that is, the inner baffle plate assembly 2 can reduce the volume of the liquid storage cavity 14 of the humidification tank; under the condition that the total amount of the heated and evaporated water vapor gas is certain, the volume of the humidifying tank is reduced, the heated gas stays in the smaller volume of the humidifying tank, so that the pressure born by the heated gas is higher, the heated gas can be discharged onto the breathing pipe more quickly, the gas transmission efficiency of the humidifying tank is improved, and the patient is supplied with high-flow wet and hot oxygen more quickly. Moreover, the inner baffle assembly 2 is positioned in the liquid storage cavity 14 through the first positioning structure and the second structure, and the inner baffle assembly 2 and the floating bottle assembly 3 are arranged at intervals, so that the inner baffle assembly 2 cannot interfere with the floating of the floating bottle assembly 3, and the floating bottle assembly 3 can smoothly float to the plugging water injection hole 111.

Referring to fig. 3, 7 and 9, further, the inner baffle assembly 2 includes a first housing 21 having an inner cavity, and a base 22 covered and fixed on the first housing 21, the first positioning structure includes a positioning portion 4 protruding from an inner wall of the tank 1 toward the liquid storage cavity 14, the second positioning structure includes a positioning groove 5 provided on the first housing 21, and the positioning portion 4 extends into the positioning groove 5. Because the locating part 4 stretches into the locating groove 5, the locating part 4 can prevent the inner baffle plate assembly 2 from shaking in the liquid storage cavity 14, so that the humidifying tank can be prevented from being damaged due to collision between the inner baffle plate assembly 2 and the tank body 1, and the inner baffle plate assembly 2 can be further prevented from interfering with the floating of the floating bottle assembly 3. It should be appreciated that since the first housing 21 has an inner cavity, in the case where the outer dimension of the first housing 21 is large, the weight of the first housing 21 can be reduced, thereby reducing the weight of the inner barrier assembly 2; while facilitating the lifting of the volume of the reservoir 14 occupied by the inner baffle assembly 2. According to the actual needs of the users,

referring to fig. 7 and 9, in some embodiments, the cross-sectional shape of the positioning groove 5 includes any one of Y-shape, T-shape, folded line shape, and curve shape, and the positioning portion 4 is adapted to the positioning groove 5. Preferably, the cross section of the positioning groove 5 is Y-shaped, so that the forming is simple, and the positioning part 4 is beneficial to limiting the shaking of the inner baffle assembly 2 along multiple directions; the bottom of the positioning groove 5 may extend to be flush with the connection end of the first housing 21 and the base 22, so that the depth of the positioning groove 5 is maximized, and it is ensured that the positioning portion 4 may extend into a sufficient length, so that the positioning portion 4 may provide a sufficient blocking force to prevent the first housing 21 from shaking, thereby preventing the inner barrier assembly 2 from shaking. The cross-sectional shape of the positioning groove 5 may be T-shaped, a fold line-shaped (e.g., Z-shaped), a curved (e.g., S-shaped), or the like, according to actual needs.

It should be noted that, the extending direction of the positioning portion 4 extending into the positioning groove 5 is parallel to the floating direction of the floating bottle assembly 3, so that the floating of the floating bottle assembly 3 can be further prevented from being interfered by the inner baffle assembly 2.

Referring to fig. 3, 6 and 7, in one embodiment, the tank 1 has a bottom wall and a top wall opposite to each other, the base 22 includes a first bottom cover 221 fastened to the first housing 21 in a covering manner, and a bottom post 222 fastened to a side of the first bottom cover 221 away from the first housing 21, and a gap is formed between the first housing 21 and the top wall of the tank 1, and when water is not injected into the tank 1, the bottom post 222 contacts with the bottom wall of the tank 1. Specifically, four bottom posts 222 may be disposed, and the four bottom posts 222 are correspondingly disposed at four corners of the first bottom cover 221, so that the bottom posts 222 may provide a more stable supporting force. It should be appreciated that the first housing 21 and the first bottom cover 221 have a weight such that when water is injected into the can 1, the inner baffle assembly 2 may float until the bottom post 222 is separated from the bottom wall of the can 1, or may remain in contact with the bottom wall of the can 1 at all times. Since there is a gap between the first outer shell 21 and the top wall of the can 1, the gap can provide a sufficient floating distance for the inner baffle assembly 2 to avoid the inner baffle assembly 2 from colliding with the top wall of the can 1 even in the case where the inner baffle assembly 2 can float up until the bottom post 222 is separated from the bottom wall of the can 1. Other numbers of bottom posts 222 may be provided, such as two, three, five, etc., as desired; the gap between the first housing 21 and the top wall of the can 1 may also be controlled by the length of the bottom post 222.

In the process of assembling the first housing 21 and the first bottom cover 221, the first housing 21 and the first bottom cover 221 are fixed together by ultrasonic welding, so that the production cost can be reduced.

Referring to fig. 6 and 7, preferably, the first housing 21 and the first bottom cover 221 are respectively provided with a relief groove 23 at a side close to the floating bottle assembly 3, and the depth of the relief groove 23 gradually decreases from the middle of the relief groove 23 toward the end to adapt to the floating bottle assembly 3. Specifically, the relief groove 23 is V-shaped, which is beneficial for the relief groove 23 to provide enough relief space for the floating bottle assembly 3 in a smaller size range. Preferably, the positioning groove 5 of the first housing 21 is communicated with the yielding groove 23, and the bifurcation part of the Y-shaped positioning groove 5 coincides with the yielding groove 23, so that the inner cavity of the inner baffle assembly 2 can be larger, and the inner baffle assembly 2 can occupy more volume of the liquid storage cavity 14.

Referring to fig. 7, further, the first housing 21 is provided with a mounting hole 211 communicating with the inner cavity of the first housing 21, and the inner baffle assembly 2 further includes filter cotton 24 interference fitted with the mounting hole 211. Wherein, the gas in the inner baffle plate assembly 2 can permeate the filter cotton 24; when the humidification tank is heated, the gas in the inner baffle plate assembly 2 can be heated and expanded, and the thermally expanded gas can be discharged through the filter cotton 24, so that the inner baffle plate assembly 2 is prevented from being damaged due to the thermal expansion of the gas. Preferably, the filter cotton 24 is assembled with the mounting hole 211 by interference fit, so that the connection strength between the filter cotton 24 and the first housing 21 can be improved, and the filter cotton 24 is prevented from being separated from the first mounting hole 211 due to thermal expansion impact of gas. Preferably, the mounting holes 211 are located at a height from the bottom wall of the tank 1 such that water in the reservoir 14 does not flow from the mounting holes 211 into the interior cavity of the inner baffle assembly 2 before the float bottle assembly 3 seals the water injection hole 111.

Referring to fig. 4, 5 and 8, further, the floating bottle assembly 3 includes a bottle body 31, a bottle cap 32 fixed on the bottle body 31 and having a bottle opening structure 321, and a sealing ring 33 sealed and fixed on the bottle opening structure 321, wherein a guiding channel 112 sleeved outside the water injection hole 111 is formed on the inner wall of the tank body 1, and at least part of the bottle opening structure 321 is slidably connected to the guiding channel 112; when water is not injected into the tank body 1, the bottle body 31 is in contact with the inner wall of the tank body 1, and the sealing ring 33 is arranged at intervals with the water injection hole 111; when the water is injected into the tank 1, the bottle 31 can float to the sealing ring 33 to seal the water injection hole 111. The sealing ring 33 is used for sealing the water injection hole 111 to prevent water from flowing into the liquid storage cavity 14 through the water injection hole 111; at the same time, the sealing ring 33 seals the bottle mouth structure 321 from flowing into the bottle body 31 when water flows into the liquid storage cavity 14, thereby avoiding the weight of the bottle body 31 from rising. The guiding channel 112 can guide the floating of the bottle body 31 through the bottle opening structure 321, so that the sealing ring 33 can more accurately seal the water injection hole 111; at the same time, the bottle 31 can be prevented from shaking left and right during the floating process. It will be appreciated that after a period of water filling, the bottle 31 floats upwards under the influence of buoyancy until the sealing ring 33 seals the water inlet, enabling the water level of the humidification tank to be controlled by the floating bottle assembly 3.

Referring to fig. 2, 4 and 5, in one embodiment, the bottle mouth structure 321 includes an outer circumferential wall 3211 fixed on the bottle cap 32, and an inner circumferential wall 3212 with one end fixedly connected to the outer circumferential wall 3211 and the other end closed, one end of the outer circumferential wall 3211 far away from the bottle cap 32 is slidingly assembled in the guide channel 112, a water gap is formed between the outer circumferential wall 3211 and the guide channel 112, a surrounding cavity of the outer circumferential wall 3211 is communicated with an inner cavity of the bottle body 31, a communication hole 3213 communicated with the surrounding cavity of the outer circumferential wall 3211 is formed at the closed end of the inner circumferential wall 3212, a clamping groove 3214 is formed by spacing the outer circumferential wall 3211 and the inner circumferential wall 3212, and the sealing ring 33 is clamped in the clamping groove 3214 and seals the communication hole 3213. Specifically, the outer peripheral wall 3211 is fixed in the middle of the bottle cap 32, and one end of the outer peripheral wall 3211 away from the bottle cap 32 is slidably assembled in the guide channel 112, so as to guide the floating of the bottle body 31; the opening of the bottle body 31 can be reduced by the communicating hole 3213 formed in the closed end of the inner peripheral wall 3212, and the difficulty in sealing the opening structure 321 by the sealing ring 33 can be reduced by sealing the opening structure 321 by the sealing communicating hole 3213. It will be appreciated that water may flow from the gap into the reservoir 14 due to the water gap between the peripheral wall 3211 and the guide channel 112.

Referring to fig. 5, preferably, a gap is formed between the closed end of the sealing ring 33 and the closed end of the inner peripheral wall 3212, after the humidification tank is heated, the gas in the bottle body 31 is heated and expanded, and the gas after the thermal expansion can flow into the gap from the communication hole 3213, so as to avoid the damage of the floating bottle assembly 3 due to the thermal expansion of the gas; meanwhile, the sealing ring 33 may be made of silica gel, so that the sealing ring 33 will deform after being impacted by water flow, so that the sealing ring 33 will further press the peripheral wall 3211, thereby improving the assembly tightness between the sealing ring 33 and the clamping groove 3214.

Referring to fig. 5, in one embodiment, an end of the sealing ring 33 away from the water injection hole 111 abuts against a connection portion between the inner peripheral wall 3212 and the outer peripheral wall 3211. It should be understood that even if a part of the water flow flows in from the minute gaps between the seal ring 33 and the inner peripheral wall 3212 and between the seal ring 33 and the outer peripheral wall 3211, the seal ring 33 abuts against the joint between the inner peripheral wall 3212 and the outer peripheral wall 3211 (i.e., the groove bottom of the engagement groove 3214), the part of the water flow can be blocked from further flowing into the bottle 31.

It should be noted that, the bottle body 31 and the bottle cap 32 of the floating bottle assembly 3 are fixed together by ultrasonic welding, so as to reduce the cost of the processing technology; the floating bottle assembly 3 only adopts the bottle body 31, the bottle cap 32 and the sealing ring 33, has less parts and simple structure, and can optimize the water shutoff structure of the humidifying tank.

Referring to fig. 1, 6 and 9, further, the tank 1 includes a second housing 11 having a liquid storage chamber 14, a second bottom cover 12 fixed to the second housing 11 and covering the liquid storage chamber 14, and a sealing gasket 13 disposed between the second housing 11 and the second bottom cover 12, and a water injection hole 111 is provided in the second housing 11. Specifically, be equipped with the ring channel on the bottom for install sealed pad 13, sealed pad 13 can promote the leakproofness of junction between second shell 11 and the second bottom 12, avoids water to reveal from jar body 1. The second housing 11 is further provided with two ventilation ports 113 communicated with the liquid storage tank, and the two ventilation ports 113 are used for being connected into a breathing pipeline of the breathing machine. Preferably, the water injection gun head 6 can be installed in the water injection hole 111, and the water outlet of the water injection gun head 6 is pointed, so that the water outlet of the water injection gun head 6 is smaller, and the sealing ring 33 is beneficial to sealing the water injection gun head 6.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A humidification tank, comprising:

the tank body is provided with a liquid storage cavity and is provided with a water injection hole communicated with the liquid storage cavity;

the inner baffle plate assembly is accommodated in the liquid storage cavity;

the floating bottle component is accommodated in the liquid storage cavity;

the inner baffle assembly is arranged at intervals with the floating bottle assembly, the tank body is provided with a first positioning structure, the inner baffle assembly is provided with a second positioning structure, the first positioning structure and the second positioning structure are jointly used for positioning the inner baffle assembly, and when water is injected into the tank body, the floating bottle assembly can float to seal the water injection hole.

2. The humidification tank of claim 1, wherein the inner baffle assembly comprises a first housing having an inner cavity, and a base secured to the first housing in a covering manner, the first positioning structure comprises a positioning portion protruding from an inner wall of the tank toward the liquid storage cavity, and the second positioning structure comprises a positioning groove provided in the first housing, and the positioning portion extends into the positioning groove.

3. The humidification tank of claim 2, wherein the cross-sectional shape of the positioning groove comprises any one of a Y-shape, a T-shape, a folded line shape, and a curved line shape, and the positioning portion is adapted to the positioning groove.

4. A humidification tank as claimed in claim 3, wherein the tank has oppositely disposed bottom and top walls, the base comprises a first bottom cover secured to the first housing in a lid-up manner, and a bottom post secured to a side of the first bottom cover remote from the first housing, the first housing and the top wall of the tank having a gap therebetween, the bottom post being in contact with the bottom wall of the tank when water is not injected into the tank.

5. The humidification tank of claim 4, wherein the first housing and the first bottom cover are each provided with a relief groove on a side thereof adjacent to the float bottle assembly, and wherein a depth of the relief groove gradually decreases from a middle portion toward an end portion of the relief groove to fit the float bottle assembly.

6. The humidification tank of claim 2, wherein the first housing is provided with a mounting hole in communication with an interior cavity of the first housing, the inner baffle assembly further comprising a filter cotton interference fit with the mounting hole.

7. The humidifying tank according to claim 1, wherein the floating bottle assembly comprises a bottle body, a bottle cap fixed on the bottle body and provided with a bottle opening structure, and a sealing ring sealed and fixed on the bottle opening structure, a guide channel sleeved outside the water injection hole is formed on the inner wall of the tank body, and at least part of the bottle opening structure is connected with the guide channel in a sliding manner;

when water is not injected into the tank body, the bottle body is in contact with the inner wall of the tank body, and the sealing ring and the water injection hole are arranged at intervals; when water is injected into the tank body, the bottle body can float to the sealing ring to seal the water injection hole.

8. The humidifying tank according to claim 7, wherein the bottle mouth structure comprises an outer peripheral wall fixed on the bottle cap and an inner peripheral wall with one end fixedly connected to the outer peripheral wall and the other end closed, one end of the outer peripheral wall far away from the bottle cap is slidably assembled in the guide channel, a water gap is reserved between the outer peripheral wall and the guide channel, a surrounding cavity of the outer peripheral wall is communicated with an inner cavity of the bottle body, a communication hole communicated with the surrounding cavity of the outer peripheral wall is formed in the closed end of the inner peripheral wall, a clamping groove is formed between the outer peripheral wall and the inner peripheral wall at intervals, and the sealing ring is clamped in the clamping groove and seals the communication hole.

9. The humidification tank of claim 8, wherein an end of the sealing ring remote from the water injection hole abuts a junction of the inner peripheral wall and the outer peripheral wall.

10. The humidification tank of claim 1, wherein the tank body comprises a second housing having the reservoir, a second bottom cap secured to the second housing and covering the reservoir, and a gasket disposed between the second housing and the second bottom cap, the water injection hole being provided in the second housing.