Humidifying tank

Abstract

The utility model relates to a humidifying tank which comprises a shell provided with a liquid inlet hole and a liquid storage cavity. At least part of the first floater is contained in the liquid storage cavity; at least part of the second floater is contained in the liquid storage cavity; the sealing assembly and the shell define a temporary storage cavity communicating with the liquid inlet hole, the sealing assembly is further provided with a liquid guide hole capable of communicating the liquid storage cavity with the temporary storage cavity, and the sealing assembly comprises a sealing piece capable of being connected with the first floater in an abutting mode; liquid in the liquid storage cavity has a first liquid level and a second liquid level, and the second liquid level is closer to the liquid inlet hole than the first liquid level; when the first floater is normal and liquid reaches a first liquid level, the first floater enables the sealing piece to block the liquid inlet hole under the action of buoyancy; and when the first floater loses efficacy and the liquid reaches the second liquid level, the second floater blocks the liquid guide hole under the action of buoyancy. And by arranging a second floater, the use safety of the humidifying tank is further improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a humidifier. Background Technology

[0002] Humidifiers are an essential component of ventilators or respiratory systems, warming and humidifying inhaled air. This helps prevent and reduce secondary respiratory infections in mechanically ventilated patients, as well as irritation to the cardiopulmonary system, keeping the alveoli moist. It also reduces heat and respiratory moisture loss, making it less prone to sputum buildup and decreasing the viscosity of secretions, thus promoting expectoration. During use, it's common to add an appropriate amount of water to the humidifier. However, with traditional humidifiers, adding too much water can cause the control valve to fail to close automatically, potentially leading to medical accidents and ultimately compromising the safety of humidifier use. Utility Model Content

[0003] One of the technical problems addressed by this application is how to improve the safety of using humidification tanks.

[0004] A humidification tank, comprising:

[0005] The shell has a liquid inlet and a liquid storage cavity;

[0006] The first float is at least partially housed within the liquid storage cavity;

[0007] The second float is at least partially housed within the liquid storage cavity; and

[0008] A sealing assembly, together with the housing, forms a buffer cavity communicating with the liquid inlet. The sealing assembly also has a liquid guide hole that can communicate with the liquid storage cavity and the buffer cavity. The sealing assembly includes a sealing element that can abut against the first float.

[0009] The liquid in the storage chamber has a first liquid level and a second liquid level, with the second liquid level being closer to the inlet hole than the first liquid level. When the first float is functioning normally and the liquid reaches the first liquid level, the first float, under the action of buoyancy, causes the seal to block the inlet hole. When the first float fails and the liquid reaches the second liquid level, the second float, under the action of buoyancy, blocks the guide hole.

[0010] In one embodiment, the sealing assembly further includes a mounting member and a telescopic member, the mounting member being fixedly connected to the housing, the telescopic member being connected between the seal and the mounting member, the telescopic member being capable of telescoping to move the seal closer to or away from the liquid inlet, and the liquid guide hole being formed on the seal.

[0011] In one embodiment, the mounting component includes a first mounting sleeve, which is connected to the telescopic component and fixedly fitted onto the housing.

[0012] In one embodiment, the mounting component includes a first mounting sleeve and a second mounting sleeve. The first mounting sleeve is connected to the telescopic component and sleeved on the housing. The second mounting sleeve includes a first sleeve portion and a second sleeve portion. The first sleeve portion protrudes from the second sleeve portion and is fixedly sleeved on the first mounting sleeve. The second sleeve portion is fixedly sleeved on the housing.

[0013] In one embodiment, the sealing element includes a sealing sleeve and a sealing ring. The sealing sleeve is fitted onto the first float and can block the liquid inlet hole. The sealing ring protrudes from the sealing sleeve and is connected to the telescopic member. The liquid guide hole is formed on the sealing ring.

[0014] In one embodiment, one end of the telescopic member is connected to the outer or inner surface of the mounting member, and the other end of the telescopic member is connected to the outer or inner surface of the sealing ring.

[0015] In one embodiment, the telescopic member is in the form of a curved fold, and the telescopic member is curved along a curve or along a zigzag line.

[0016] In one embodiment, the sealing assembly further includes a mounting member with higher rigidity than the seal, the liquid guide hole is disposed on the mounting member, the mounting member is fixedly connected between the housing and the seal, and the first float can drive the seal to produce elastic deformation to block the liquid inlet hole.

[0017] In one embodiment, the sealing assembly further includes a mounting member, one end of which is fixedly connected to the sealing member, and the other end of which is slidably connected to the housing, and the liquid guiding hole is disposed on the mounting member.

[0018] In one embodiment, the seal has a sealing surface, the housing has an abutting surface, the liquid inlet hole penetrates the abutting surface, and the sealing surface abuts against the abutting surface to block the liquid inlet hole; both the sealing surface and the abutting surface are planar, or one of the sealing surface and the abutting surface is an outwardly convex surface and the other is an inwardly concave surface.

[0019] In one embodiment, the seal includes a sealing sleeve, an insertion part, and a blocking part. The sealing sleeve is fitted onto the first float, the insertion part is connected to the sealing sleeve and can be inserted into the liquid inlet, and the blocking part is connected to the insertion part and blocks the end of the liquid inlet.

[0020] In one embodiment, the number of liquid guiding holes is one or more, and the plurality of liquid guiding holes are arranged at intervals along the circumference surrounding the first float. The second float includes protruding components, the number of which is equal to and corresponds one-to-one with the number of liquid guiding holes, and the protruding components block the liquid guiding holes.

[0021] In one embodiment, the protruding component includes a first protrusion and a second protrusion arranged coaxially. The first protrusion is closer to the liquid inlet than the second protrusion. The cross-sectional dimension of the first protrusion is smaller than that of the second protrusion. At the first liquid level, the first protrusion is clearance-fitted with the liquid guide hole. At the second liquid level, the second protrusion is interference-fitted with the liquid guide hole.

[0022] In one embodiment, the cross-sectional dimension of the second protrusion gradually increases along the direction from the first protrusion to the second protrusion.

[0023] In one embodiment, the protruding component includes a protrusion and a plug, the plug being sleeved on the protrusion and the protrusion being in clearance fit with the liquid guide hole. At the first liquid level, the plug is spaced apart from the liquid inlet hole, and at the second liquid level, the plug blocks the end of the liquid inlet hole.

[0024] In one embodiment, the protruding component includes a protrusion and a plug, the plug being disposed at one end of the protrusion near the liquid inlet, the protrusion being located outside the liquid guide hole; at the first liquid level, the plug is spaced apart from the liquid guide hole, and at the second liquid level, the plug blocks the end of the liquid guide hole.

[0025] In one embodiment, the housing includes a protrusion that forms the buffer cavity with the sealing assembly, the sealing assembly being sleeved on the protrusion.

[0026] In one embodiment, the second float has a sliding hole, the first float is in clearance fit with the sliding hole and can slide relative to the sliding hole, and the liquid guide hole is connected to the liquid storage cavity through the sliding hole.

[0027] In one embodiment, the housing includes an outer shell and a heating base connected to each other, the liquid inlet is disposed in the outer shell, and the first float and the second float are capable of moving away from the heating base under the action of buoyancy.

[0028] One technical effect of one embodiment of this application is that, when the first float is functioning normally, and the liquid level reaches the first liquid level, the first float will cause the seal to block the liquid inlet, thereby preventing the addition of liquid into the storage chamber through the liquid inlet, thus avoiding medical accidents caused by excessive liquid in the storage chamber and improving the safety of the humidifier. However, if the first float fails, when the liquid volume increases and reaches a second liquid level higher than the first liquid level, the second float will block the liquid guide hole, preventing liquid entering the buffer chamber from the liquid inlet from entering the storage chamber through the liquid guide hole, thus avoiding medical accidents caused by excessive liquid in the storage chamber and improving the safety of the humidifier. Therefore, by setting up a second float, even if the first float fails, the second float can still function to prevent excessive liquid in the storage chamber. Thus, the first float and the second float together form a double insurance against excessive liquid in the storage chamber, thereby further improving the safety of the humidifier. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of a humidification tank provided in one embodiment.

[0030] Figure 2 for Figure 1 The diagram shows the exploded structure of the humidification tank.

[0031] Figure 3 for Figure 2 A cross-sectional structural diagram.

[0032] Figure 4 for Figure 1 The diagram shows a cross-sectional view of the humidification tank when the liquid is at the first liquid level.

[0033] Figure 5 for Figure 1 The diagram shows a planar cross-sectional view of the humidification tank when the liquid is at the second level.

[0034] Figure 6 for Figure 1 The diagram shows a partial planar cross-sectional view of the sealing element in the humidification tank, including the first mounting sleeve.

[0035] Figure 7 for Figure 1 The diagram shows a partial planar cross-sectional view of the sealing components in the humidification tank, including a first mounting sleeve and a second mounting sleeve.

[0036] Figure 8 for Figure 1 The diagram shows a partial planar cross-sectional view of the sealing element in the humidification tank, which is capable of elastic deformation.

[0037] Figure 9 for Figure 1A partial planar cross-sectional view of the humidification tank in which the mounting components are slidably connected to the shell.

[0038] Figure 10 for Figure 1 The diagram shows a partial planar cross-sectional view of the humidification tank when the expansion joint is simultaneously connected to both the outer surface of the mounting component and the inner surface of the sealing ring.

[0039] Figure 11 for Figure 1 The diagram shows a partial planar cross-sectional view of the humidification tank when the expansion joint is simultaneously connected to the outer surfaces of the mounting component and the sealing ring.

[0040] Figure 12 for Figure 1 The diagram shows a partial planar cross-sectional view of the expansion joint in the humidification tank, which is a polygonal shape.

[0041] Figure 13 for Figure 1 The diagram shows a partial planar cross-sectional view of the humidification tank where the contact surface is concave and the sealing surface is convex.

[0042] Figure 14 for Figure 1 The diagram shows a partial planar cross-sectional view of the sealing element in the humidification tank, including the insertion part and the sealing part.

[0043] Figure 15 for Figure 1 The diagram shows a partial planar cross-sectional view of the humidification tank when the protruding components include a first protrusion and a second protrusion.

[0044] Figure 16 for Figure 1 A partial planar cross-sectional view of the humidification tank in which the plugging component of the protruding assembly is fitted onto the protruding post.

[0045] Figure 17 for Figure 1 The diagram shows a partial planar cross-sectional view of the humidification tank when the plug of the protruding component is located at the end of the protruding column.

[0046] Figure 18 A schematic cross-sectional view of the humidification tank provided for another embodiment.

[0047] Figure 19 This is a schematic cross-sectional view of the humidification tank provided in another embodiment.

[0048] Reference numerals: humidification tank 10, first liquid level 11, second liquid level 12, shell 300, liquid inlet 310, liquid storage chamber 320, outer shell 330, protrusion 331, heating seat 340, contact surface 350, sliding groove 360, first float 100, second float 200, protrusion assembly 210, first protrusion 211, second protrusion 212, protrusion 213, plugging component 214, sliding hole 220, sealing assembly 400, buffer chamber 410, liquid guide hole 420, sealing component 430, sealing sleeve 431, sealing protrusion ring 432, sealing surface 433, insertion part 434, sealing part 435, mounting component 440, first mounting sleeve 441, second mounting sleeve 442, first sleeve part 4421, second sleeve part 4422, telescopic component 450. Detailed Implementation

[0049] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0050] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0055] See Figure 1 , Figure 2 , Figure 3 and Figure 4A humidifier 10 provided in one embodiment of this application can be applied to a ventilator or other respiratory system, i.e., the ventilator includes the humidifier 10. The humidifier 10 includes a first float 100, a second float 200, a housing 300, and a sealing assembly 400. The housing 300 has a liquid inlet 310 and a liquid storage chamber 320. The liquid storage chamber 320 is used to store liquid. External liquid can enter the liquid storage chamber 320 through the liquid inlet 310, that is, liquid can be replenished into the liquid storage chamber 320 through the liquid inlet 310. The first float 100 is at least partially housed in the liquid storage chamber 320. The first float 100 can float under the buoyancy of the liquid in the liquid storage chamber 320. As the liquid level rises, the first float 100 will move closer to the liquid inlet 310. The second float 200 is at least partially housed within the liquid storage cavity 320. The second float 200 can float under the buoyancy of the liquid in the liquid storage cavity 320. As the liquid level rises, the second float 200 will move closer to the liquid inlet 310. Of course, the liquid level required for the second float 200 to start floating will be greater than the liquid level required for the first float 100 to start floating.

[0056] See Figure 3 , Figure 4 and Figure 5 The sealing assembly 400 and the housing 300 together form a buffer cavity 410, which is interconnected with the liquid inlet 310. The sealing assembly 400 also has a liquid guide hole 420, which connects the liquid storage cavity 320 and the buffer cavity 410. When liquid is added through the liquid inlet 310, the liquid first enters the buffer cavity 410, and then flows from the buffer cavity 410 through the liquid guide hole 420 into the liquid storage cavity 320, thus replenishing the liquid in the liquid storage cavity 320. The sealing assembly 400 includes a sealing element 430, which can abut against the first float 100, allowing the first float 100 to push the sealing element 430 to move. The liquid in the storage chamber 320 can have a first liquid level 11 and a second liquid level 12. The second liquid level 12 is closer to the inlet hole 310 than the first liquid level 11. In simpler terms, the height of the second liquid level 12 is greater than the height of the first liquid level 11, that is, the second liquid level 12 is higher than the first liquid level 11. (See also...) Figure 4 and Figure 18 The sealing assembly 400 and the housing 300 can form a fixed connection relationship, see reference. Figure 19 The sealing component 400 and the housing 300 can also be independent of each other, and there can be a certain gap between the sealing component 400 and the housing 300. Regardless of whether the sealing component 400 and the housing 300 are fixedly connected, as long as the sealing component 400 and the housing 300 can form a buffer cavity 410 with a certain capacity, it is acceptable.

[0057] See Figure 4 , Figure 5 and Figure 6 When the first float 100 is functioning normally, during the continuous addition of liquid to the storage chamber 320 through the inlet hole 310, the first float 100 will float when the liquid level reaches a certain height, while the second float 200 will not. As the liquid level rises, the first float 100, under the action of buoyancy, will move the sealing element 430 closer to the inlet hole 310. When the liquid reaches the first liquid level 11, the sealing element 430 will block the inlet hole 310, thus preventing further addition of liquid to the storage chamber 320 through the inlet hole 310. This avoids excessive liquid and potential medical accidents, improving the safety of the humidification tank 10. Of course, the second float 200 may not float when the liquid reaches the first liquid level 11.

[0058] See Figure 4 , Figure 5 and Figure 6 If the first float 100 fails to float, the second float 200 can begin to float when the liquid level reaches a position higher than the first liquid level 11. As the liquid level continues to rise, the second float 200 moves closer to the inlet hole 310 under the action of buoyancy. When the liquid reaches the second liquid level 12, the second float 200 will block the guide hole 420. Even if liquid is added to the inlet hole 310, the liquid will be stored in the buffer chamber 410. The liquid in the buffer chamber 410 will no longer be able to enter the storage chamber 320 through the guide hole 420, that is, it will no longer be possible to replenish the storage chamber 320 through the inlet hole 310. This can prevent medical accidents caused by excessive liquid in the storage chamber 320 and improve the safety of using the humidification tank 10.

[0059] If only the first float 100 is used, and the first float 100 fails and cannot float with the liquid, that is, as the liquid level rises, the first float 100 still cannot move close to the liquid inlet 310. Therefore, in the case of excessive liquid, the first float 100 still cannot block the liquid inlet 310, allowing the liquid to continuously replenish the liquid storage chamber 320 from the liquid inlet 310. This leads to an extreme excess of liquid in the liquid storage chamber 320, causing a medical accident and ultimately affecting the safety of the humidification tank 10.

[0060] See Figure 4 , Figure 5 and Figure 6Regarding the humidification tank 10 in the above embodiment, when the first float 100 is functioning normally, when the liquid level reaches the first liquid level 11, the first float 100 will cause the sealing member 430 to block the liquid inlet 310, thereby preventing the addition of liquid into the storage chamber 320 through the liquid inlet 310. This avoids medical accidents caused by excessive liquid in the storage chamber 320 and improves the safety of using the humidification tank 10. However, if the first float 100 fails, when the liquid volume increases and reaches the second liquid level 12, which is higher than the first liquid level 11, the second float 200 will block the liquid guide hole 420, preventing liquid entering the buffer chamber 410 from the liquid inlet 310 from entering the storage chamber 320 through the liquid guide hole 420. This also avoids medical accidents caused by excessive liquid in the storage chamber 320 and improves the safety of using the humidification tank 10. Therefore, by setting the second float 200, even if the first float 100 fails, the second float 200 can still play the role of preventing excessive liquid in the liquid storage chamber 320. Thus, the first float 100 and the second float 200 can together form a double insurance against excessive liquid in the liquid storage chamber 320, thereby further improving the safety of the humidification tank 10.

[0061] See Figure 6 In some embodiments, the sealing assembly 400 further includes a mounting member 440 and a telescopic member 450. The mounting member 440 is fixedly connected to the housing 300, and the rigidity of the mounting member 440 can be greater than the rigidity of the telescopic member 450 and the sealing member 430. The mounting member 440 is fixedly connected to the housing 300, for example, by means of adhesive bonding, snap-fitting, or welding. The telescopic member 450 has good flexibility. One end of the telescopic member 450 is connected to the mounting member 440, and the other end of the telescopic member 450 is connected to the sealing member 430, so that the telescopic member 450 is connected between the sealing member 430 and the mounting member 440. The liquid guide hole 420 is formed on the sealing member 430. The telescopic member 450 can elastically expand and contract, that is, the telescopic member 450 can extend or shorten. When the sealing member 430 moves with the first float 100, the mounting member 440 can remain stationary. When the liquid level rises and pushes the first float 100 closer to the inlet hole 310, the mounting member 440 and the sealing member 430 do not deform, allowing the telescopic member 450 to shorten, thereby causing the sealing member 430 to move closer to the inlet hole 310 along with the first float 100. When the liquid level drops and causes the first float 100 to move away from the inlet hole 310, the telescopic member 450 can extend, thereby causing the sealing member 430 to move away from the inlet hole 310 along with the first float 100.

[0062] See Figure 6For example, the mounting component 440 may include a first mounting sleeve 441, which is connected to the telescopic component 450 and sleeved on the housing 300, so that the first mounting sleeve 441 can be directly fixed on the housing 300 by means of adhesive bonding or snap-fitting. See reference. Figure 7 For example, the mounting component 440 may include a first mounting sleeve 441 and a second mounting sleeve 442. The first mounting sleeve 441 is connected to the telescopic component 450 and sleeved on the housing 300. The second mounting sleeve 442 may include a first sleeve portion 4421 and a second sleeve portion 4422. The first sleeve portion 4421 protrudes from the second sleeve portion 4422 and surrounds the second sleeve portion 4422. The first sleeve portion 4421 is fixedly sleeved on the first mounting sleeve 441, and the second sleeve portion 4422 is fixedly sleeved on the housing 300. That is, the first mounting sleeve 441 is fixedly connected to the housing 300 through the second mounting sleeve 442.

[0063] See Figure 6 In some embodiments, the seal 430 includes a sealing sleeve 431 and a sealing ring 432. The sealing sleeve 431 is fitted onto the first float 100, or the first float 100 can be understood as being inserted into the sealing sleeve 431. The first float 100 can be fixedly connected to the sealing sleeve 431, and the first float 100 can also slide relative to the sealing sleeve 431 within a certain range. That is, the sliding of the first float 100 relative to the sealing sleeve 431 is limited, thus allowing the sealing sleeve 431 to move closer to or further away from the liquid inlet 310 along with the first float 100. When the sealing sleeve 431 abuts against the housing 300, the sealing sleeve 431 can block the liquid inlet 310. The sealing ring 432 can be axially protruding from the sealing sleeve 431, so that the sealing ring 432 surrounds the sealing sleeve 431. The sealing ring 432 can be connected to the telescopic member 450, and the liquid guide hole 420 is formed on the sealing ring 432.

[0064] Understandable, please refer to Figure 4 For example, the sealing sleeve 431 can be fixedly connected to the first float 100, meaning the sealing sleeve 431 always moves synchronously with the first float 100. (See also...) Figure 18 For example, the sealing sleeve 431 is not fixedly connected to the first float 100, and the two can remain relatively independent. In the initial stage of the first float 100 moving closer to the liquid inlet 310, the sealing sleeve 431 can remain stationary, and the first float 100 floats upward relative to the sealing sleeve 431. When the first float 100 and the sealing sleeve 431 come into contact with each other and generate an upward contact force toward the liquid inlet 310, that is, when the first float 100 comes into contact with the sealing sleeve 431, the first float 100 can also push the sealing sleeve 431 closer to the liquid inlet 310.

[0065] In some embodiments, one end of the telescopic member 450 is connected to the outer or inner surface of the mounting member 440, and the other end of the telescopic member 450 is connected to the outer or inner surface of the sealing ring 432. See also Figure 11 For example, the two ends of the telescopic member 450 can be connected to the outer surfaces of the first mounting sleeve 441 and the sealing ring 432 of the mounting member 440, respectively; or the two ends of the telescopic member 450 can be connected to the inner surfaces of the first mounting sleeve 441 and the sealing ring 432 of the mounting member 440, respectively; see reference Figure 10 For example, the two ends of the telescopic component 450 can be connected to the inner surface of one of the first mounting sleeve 441 and the outer surface of the sealing ring 432 of the mounting component 440, respectively. This allows for diverse connection methods for the telescopic component 450, thereby improving its applicability to various installation methods. The telescopic component 450 can be in a curved, pleated shape, bending along a curve or a zigzag line. (See also...) Figure 12 For example, the telescopic component 450 can be sinusoidal or sawtooth-shaped.

[0066] See Figure 8 In some embodiments, the sealing assembly 400 further includes a mounting member 440, the rigidity of which may be higher than that of the sealing member 430. A liquid guide hole 420 is disposed on the mounting member 440, and the mounting member 440 is fixedly connected between the housing 300 and the sealing member 430. The sealing member 430 can undergo elastic deformation. For example, when the liquid level rises and the first float 100 moves closer to the liquid inlet 310 under the action of buoyancy, the sealing member 430 will elastically elongate and store energy, allowing the sealing member 430 to reach the position of the liquid inlet 310 and block the liquid inlet 310 by elastic deformation. When the liquid level drops and the first float 100 moves away from the liquid inlet 310, the sealing member 430 will gradually return to its original shape under its own elastic force, allowing the sealing member 430 to move away from the liquid inlet 310 and stop blocking the liquid inlet 310.

[0067] See Figure 9In some embodiments, the sealing assembly 400 further includes a mounting member 440, one end of which is fixedly connected to the sealing member 430, and the other end of which is slidably connected to the housing 300. A liquid guide hole 420 can be provided on the mounting member 440. For example, a groove 360 ​​can be formed on the housing 300, and the mounting member 440 slides into the groove 360, thereby achieving a sliding connection between the mounting member 440 and the housing 300. The rigidity of the mounting member 440 can be higher than that of the sealing member 430. When the liquid level rises, causing the first float 100 to move closer to the liquid inlet 310 under buoyancy, the mounting member 440 will slide relative to the housing 300 towards the liquid inlet 310, causing the sealing member 430 to follow the first float 100 towards the liquid inlet 310 until the liquid inlet 310 is blocked. When the liquid level drops and the first float 100 moves away from the inlet hole 310, the mounting part 440 will slide relative to the housing 300 away from the inlet hole 310, thereby causing the sealing part 430 to move away from the inlet hole 310 along with the first float 100, thus stopping the sealing of the inlet hole 310.

[0068] See Figure 19 The mounting component 440 is relatively long, and the sealing component 430 can be fixed to the first float 100. The mounting component 440 and the outer casing 330 are not connected, and a certain gap can exist between them. Given the relatively large length of the mounting component 440, the buffer cavity 410 enclosed by the sealing assembly 400 has a large capacity, preventing liquid in the buffer cavity 410 from overflowing from the end of the mounting component 440.

[0069] See Figure 9 In some embodiments, the seal 430 has a sealing surface 433, the housing 300 has an abutment surface 350, and the liquid inlet 310 penetrates the abutment surface 350, so that the liquid inlet 310 has an opening on the abutment surface 350. Both the abutment surface 350 and the sealing surface 433 can define a portion of the boundary of the buffer cavity 410. When the sealing surface 433 abuts against the abutment surface 350, the seal 430 can block the liquid inlet 310. (See also...) Figure 9 For example, both the sealing surface 433 and the abutment surface 350 can be flat. See also Figure 13 For example, one of the sealing surface 433 and the abutting surface 350 may be a convex surface and the other a concave surface; that is, the sealing surface 433 may be a convex surface and the abutting surface 350 may be a concave surface. Alternatively, the sealing surface 433 may be a concave surface and the abutting surface 350 may be a convex surface.

[0070] See Figure 14In some embodiments, the seal 430 includes a sealing sleeve 431, an insertion portion 434, and a blocking portion 435. The sealing sleeve 431 is fitted onto the first float 100, or the first float 100 can be understood as being inserted into the sealing sleeve 431. The first float 100 can be fixedly connected to the sealing sleeve 431, and the first float 100 can also slide relative to the sealing sleeve 431 within a certain range. That is, the sliding of the first float 100 relative to the sealing sleeve 431 is limited, thus allowing the sealing sleeve 431 to move closer to or further away from the liquid inlet 310 along with the first float 100. The insertion portion 434 protrudes from the sealing sleeve 431 and can be inserted into the liquid inlet 310. The blocking portion 435 is connected to the insertion portion 434 and can be annular. The blocking portion 435 can be fixedly fitted onto the insertion portion 434 and is used to block the end of the liquid inlet 310. When the liquid level rises, causing the first float 100 to move closer to the inlet hole 310 under buoyancy, the insertion part 434 and the sealing part 435 slide closer to the inlet hole 310. When the insertion part 434 is inserted into the inlet hole 310, the sealing part 435 will seal the end of the inlet hole 310. That is, both the insertion part 434 and the inlet hole 310 can seal the inlet hole 310, thereby improving the sealing effect of the entire sealing member 430 on the inlet hole 310 to a certain extent. When the liquid level drops, causing the first float 100 to move away from the inlet hole 310, the insertion part 434 and the sealing part 435 will slide away from the inlet hole 310, causing the sealing part 435 to move away from the end of the inlet hole 310, and the insertion part 434 to disengage from the inlet hole 310. This allows the sealing member 430 to stop sealing the inlet hole 310.

[0071] In some embodiments, the number of liquid guiding holes 420 is one or more. When the number of liquid guiding holes 420 is multiple, the multiple liquid guiding holes 420 can be arranged at circumferential intervals around the first float 100. The second float 200 includes a protruding component 210, the number of which is equal to and corresponds one-to-one with the number of liquid guiding holes 420. The protruding component 210 is used to block the liquid guiding holes 420. When the number of liquid guiding holes 420 is multiple, more liquid will enter the liquid storage chamber 320 from the buffer chamber 410 per unit time, thereby improving the liquid injection efficiency of the liquid storage chamber 320 to a certain extent.

[0072] See Figure 15For example, the protruding assembly 210 includes a first protrusion 211 and a second protrusion 212. Both the first protrusion 211 and the second protrusion 212 can be columnar structures and coaxially arranged. The first protrusion 211 is closer to the liquid inlet 310 than the second protrusion 212, which can be understood as the first protrusion 211 being located above the second protrusion 212. The cross-sectional dimension of the first protrusion 211 is smaller than that of the second protrusion 212. The entire protruding assembly 210 can always cooperate with the liquid guide hole 420, thereby providing good guidance and limiting for the movement of the second float 200. When the liquid is at the first liquid level 11, the first protrusion 211 is in clearance fit with the liquid guide hole 420, which reduces the movement resistance of the first float 100 and ensures that the first float 100 drives the sealing member 430 to block the liquid inlet 310. This also allows the liquid in the buffer chamber 410 to flow into the storage chamber 320 through the portion of the liquid guide hole 420 not filled by the first protrusion 211 during the process of the liquid reaching the first liquid level 11. That is, the liquid can flow into the storage chamber 320 through the gap between the first protrusion 211 and the sealing assembly 400, thus ensuring that the storage chamber 320 is effectively replenished with liquid. During the process of the liquid moving from the first liquid level 11 to the second liquid level 12, since the first float 100 is unable to move due to failure, the protrusion assembly 210 will move upward relative to the liquid guide hole 420, causing the second protrusion 212 to move closer to the liquid guide hole 420. When the liquid reaches the second liquid level 12, the second protrusion 212 will form an interference fit with the liquid guide hole 420, thereby causing the second protrusion 212 to block the liquid guide hole 420. Along the direction from the first protrusion 211 to the second protrusion 212, the cross-sectional size of the second protrusion 212 gradually increases, so that the second protrusion 212 is roughly conical in shape, thereby reducing the resistance to the fit with the liquid guide hole 420 and improving the sealing effect of the second protrusion 212 on the liquid guide hole 420.

[0073] See Figure 16 For example, the protruding component 210 includes a protrusion 213 and a plug 214. The plug 214 has good flexibility, while the rigidity of the protrusion 213 can be greater than that of the plug 214. The plug 214 can be fixedly sleeved on the protrusion 213. The protrusion 213 can always form a clearance fit with the liquid guide hole 420. At and below the first liquid level 11, the plug 214 is spaced apart from the liquid inlet hole 310 to ensure that the liquid in the buffer chamber 410 smoothly enters the liquid storage chamber 320 from the liquid guide hole 420. During the process of liquid moving from the first liquid level 11 to the second liquid level 12, since the first float 100 fails and cannot move, the protruding component 210 will move upward relative to the liquid guide hole 420, causing the blocking component 214 to move closer to the liquid guide hole 420. When the liquid reaches the second liquid level 12, the blocking component 214 will seal the end of the liquid guide hole 420, thereby playing a good sealing role for the entire liquid guide hole 420.

[0074] See Figure 17 For example, the protruding component 210 includes a protrusion 213 and a plug 214. The plug 214 has good flexibility, while the rigidity of the protrusion 213 can be greater than that of the plug 214. The plug 214 is located at the end of the protrusion 213 near the liquid guide hole 420. The protrusion 213 can always be located outside the liquid guide hole 420. At and below the first liquid level 11, both the plug 214 and the protrusion 213 are spaced apart from the liquid guide hole 420, so that the protruding component 210 cannot block the liquid guide hole 420, ensuring that the liquid in the buffer chamber 410 can smoothly enter the storage chamber 320 from the liquid guide hole 420. During the process of liquid moving from the first liquid level 11 to the second liquid level 12, since the first float 100 fails and cannot move, the protruding component 210 will move upward relative to the liquid guide hole 420, causing the blocking component 214 to move closer to the liquid guide hole 420. When the liquid reaches the second liquid level 12, the blocking component 214 will seal the end of the liquid guide hole 420, thereby playing a good sealing role for the entire liquid guide hole 420.

[0075] See Figure 4 and Figure 5 In some embodiments, the outer casing 330 includes a protrusion 331, which, together with the sealing assembly 400, forms a buffer cavity 410. The sealing assembly 400 is sleeved on the protrusion 331. The protrusion 331 effectively secures the sealing assembly 400. A sliding hole 220 is provided on the second float 200, and the first float 100 is clearance-fitted with the sliding hole 220, allowing the first float 100 to slide relative to the sliding hole 220. This clearance fit between the first float 100 and the sliding hole 220 effectively guides and limits the movement of the first float 100, preventing it from drifting and ensuring that the sealing member 430 effectively seals the liquid inlet 310. On the other hand, the liquid flowing out from the liquid guide hole 420 can flow into the liquid storage chamber 320 through the part of the sliding hole 220 that is not filled by the first float 100, that is, it enters the liquid storage chamber 320 through the gap between the first float 100 and the second float 200, so that the liquid guide hole 420 is connected to the liquid storage chamber 320 through the sliding hole 220, thereby realizing the effective replenishment of the liquid in the liquid storage chamber 320.

[0076] See Figure 4 and Figure 5In some embodiments, the housing 300 includes an outer shell 330 and a heating base 340, which are connected to each other. A liquid inlet 310 is disposed on the outer shell 330, and the outer shell 330 and the heating base 340 together form a liquid storage cavity 320. When there is no liquid in the liquid storage cavity 320, both the first float 100 and the second float 200 can contact the heating base 340. When the first float 100 and the second float 200 float, they can move away from the heating base 340. The heating base 340 can heat the liquid in the liquid storage cavity 320, thereby giving the liquid a certain temperature.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A humidification tank, characterized in that, include: The shell has a liquid inlet and a liquid storage cavity; The first float is at least partially housed within the liquid storage cavity; The second float is at least partially housed within the liquid storage cavity; and A sealing assembly, together with the housing, forms a buffer cavity communicating with the liquid inlet. The sealing assembly also has a liquid guide hole that can communicate with the liquid storage cavity and the buffer cavity. The sealing assembly includes a sealing element that can abut against the first float. The liquid in the storage chamber has a first liquid level and a second liquid level, with the second liquid level being closer to the inlet hole than the first liquid level. When the first float is functioning normally and the liquid reaches the first liquid level, the first float, under the action of buoyancy, causes the seal to block the inlet hole. When the first float fails and the liquid reaches the second liquid level, the second float, under the action of buoyancy, blocks the guide hole.

2. The humidification tank according to claim 1, characterized in that, The sealing assembly further includes a mounting member and a telescopic member. The mounting member is fixedly connected to the housing, and the telescopic member is connected between the seal and the mounting member. The telescopic member is capable of telescoping to move the seal closer to or away from the liquid inlet. The liquid guide hole is formed on the seal.

3. The humidification tank according to claim 2, characterized in that, The mounting component includes a first mounting sleeve, which is connected to the telescopic component and fixedly fitted onto the housing.

4. The humidification tank according to claim 2, characterized in that, The mounting component includes a first mounting sleeve and a second mounting sleeve. The first mounting sleeve is connected to the telescopic component and sleeved on the housing. The second mounting sleeve includes a first sleeve portion and a second sleeve portion. The first sleeve portion protrudes from the second sleeve portion and is fixedly sleeved on the first mounting sleeve. The second sleeve portion is fixedly sleeved on the housing.

5. The humidification tank according to claim 2, characterized in that, The sealing element includes a sealing sleeve and a sealing protrusion ring. The sealing sleeve is fitted onto the first float and can block the liquid inlet hole. The sealing protrusion ring protrudes from the sealing sleeve and is connected to the telescopic element. The liquid guide hole is formed on the sealing protrusion ring.

6. The humidification tank according to claim 5, characterized in that, One end of the telescopic component is connected to the outer or inner surface of the mounting component, and the other end of the telescopic component is connected to the outer or inner surface of the sealing ring.

7. The humidification tank according to claim 2, characterized in that, The telescopic component is in the form of a curved fold, and it bends along a curve or along a broken line.

8. The humidification tank according to claim 1, characterized in that, The sealing assembly further includes a mounting member with a higher rigidity than the sealing member. The liquid guide hole is disposed on the mounting member. The mounting member is fixedly connected between the housing and the sealing member. The first float can drive the sealing member to produce elastic deformation to block the liquid inlet hole.

9. The humidification tank according to claim 1, characterized in that, The sealing assembly further includes a mounting component, one end of which is fixedly connected to the sealing component, and the other end of which is slidably connected to the housing. The liquid guiding hole is disposed on the mounting component.

10. The humidification tank according to claim 1, characterized in that, The sealing element has a sealing surface, the housing has an abutting surface, the liquid inlet hole penetrates the abutting surface, and the sealing surface abuts against the abutting surface to block the liquid inlet hole; both the sealing surface and the abutting surface are planar, or one of the sealing surface and the abutting surface is an outwardly convex surface and the other is an inwardly concave surface.

11. The humidification tank according to claim 1, characterized in that, The sealing element includes a sealing sleeve, an insertion part, and a blocking part. The sealing sleeve is fitted onto the first float. The insertion part is connected to the sealing sleeve and can be inserted into the liquid inlet. The blocking part is connected to the insertion part and blocks the end of the liquid inlet.

12. The humidification tank according to claim 1, characterized in that, The number of liquid guiding holes is one or more, and the plurality of liquid guiding holes are arranged at intervals along the circumference surrounding the first float. The second float includes protruding components, the number of which is equal to and corresponds one-to-one with the number of liquid guiding holes, and the protruding components block the liquid guiding holes.

13. The humidification tank according to claim 12, characterized in that, The protruding component includes a first protrusion and a second protrusion arranged coaxially. The first protrusion is closer to the liquid inlet than the second protrusion. The cross-sectional dimension of the first protrusion is smaller than that of the second protrusion. At the first liquid level, the first protrusion is clearance-fitted with the liquid guide hole. At the second liquid level, the second protrusion is interference-fitted with the liquid guide hole.

14. The humidification tank according to claim 13, characterized in that, Along the direction from the first protrusion to the second protrusion, the cross-sectional dimension of the second protrusion gradually increases.

15. The humidification tank according to claim 12, characterized in that, The protruding component includes a protrusion and a plug. The plug is sleeved on the protrusion, and the protrusion is in clearance fit with the liquid guide hole. At the first liquid level, the plug is spaced apart from the liquid inlet hole. At the second liquid level, the plug blocks the end of the liquid inlet hole.

16. The humidification tank according to claim 12, characterized in that, The protruding component includes a protrusion and a plug. The plug is disposed at one end of the protrusion near the liquid inlet, and the protrusion is located outside the liquid guide hole. At the first liquid level, the plug is spaced apart from the liquid guide hole, and at the second liquid level, the plug blocks the end of the liquid guide hole.

17. The humidification tank according to claim 1, characterized in that, The housing includes a protrusion that forms the buffer cavity with the sealing assembly, and the sealing assembly is sleeved on the protrusion.

18. The humidification tank according to claim 1, characterized in that, The second float has a sliding hole, the first float is in clearance fit with the sliding hole and can slide relative to the sliding hole, and the liquid guide hole is connected to the liquid storage cavity through the sliding hole.

19. The humidification tank according to claim 1, characterized in that, The housing includes an outer shell and a heating base connected to each other. The liquid inlet is disposed in the outer shell. The first float and the second float are able to move away from the heating base under the action of buoyancy.

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