Liquid storage device

Abstract

The utility model relates to the technical field of liquid storage devices, in particular to a liquid storage device capable of heating a certain volume of liquid, which comprises an upper cover, a middle layer and a bottom. The upper cover and the bottom are configured to be in completely detachable connection, the upper cover is provided with at least part of a platform, the middle layer is provided with a retainer and a sealing element, the retainer and part of the sealing element are configured to be connected and sealed with the bottom, part of the sealing element is configured to be in contact and sealed with the platform of the upper cover, and the retainer, the part of the sealing element and the platform jointly form a cavity capable of containing a certain volume of liquid. The bottom is provided with a heating piece used for conducting heat.

Description

Technical Field

[0001] The utility model relates to one or more of the treatment and improvement of respiratory-related diseases. Specifically, the utility model relates to the use and production of medical devices. Background Art

[0002] Sleep apnea syndrome (SAS), also known as sleep apnea-hypopnea syndrome, usually refers to repeated apnea and hypopnea more than 30 times during 7 hours of sleep every night, or a sleep apnea-hypopnea index ≥ 5 times / h. Long-term sleep apnea may be accompanied by decreased sleep quality, increased nocturia, dry mouth and headache in the morning, inattention during the day, fatigue, memory loss, and other conditions. It may also be accompanied by complications such as coronary heart disease, hypertension, and stroke, which seriously endanger human health. According to different pathogenesis, it is divided into obstructive type (OSAS), central type (CASA), and mixed type (MSAS); most patients with obstructive sleep disorders usually use CPAP machines for home treatment.

[0003] Positive pressure ventilation therapy uses an airflow generator to provide pressurized breathable gas into the patient's airway to lift or flush the patient's closed airway to achieve the purpose of treatment. Positive pressure ventilation therapy usually involves an airflow generator, a liquid storage chamber, an air delivery pipeline, a patient interface, and a data monitor. In the gas delivery process, the liquid storage chamber is an important component. The pressurized gas flows out of the airflow generator, passes through the liquid storage chamber and carries the liquid molecules in the storage chamber before being input into the patient's oral and nasal airway to avoid dry pressurized airflow being delivered to the patient's oral and nasal airway for a long time, causing dryness and discomfort in the patient's oropharyngeal and nasal mucosa, irritating the respiratory mucosa, causing inflammatory reactions or making respiratory secretions viscous, thereby increasing the burden on the throat and reducing the patient's treatment compliance. However, in order to avoid the loss of parts, the upper and lower covers of most liquid storage chambers on the market are usually connected by non-detachable hinges. Non-detachable hinges are usually difficult to clean and are prone to pinching the hands of patients during use, or the upper cover is pulled backward due to unstable center of gravity, causing the liquid storage chamber to tip over as a whole. A few detachable hinges have thinner walls or smaller areas at the hinges due to structural requirements, and are easily broken during disassembly. In addition, most liquid storage devices on the market are usually sealed by clamping silicone rings in the middle of the upper and lower covers. In order to ensure that the silicone ring can be effectively sealed in a fixed position, the upper and lower covers are usually designed with corresponding platforms 27 for clamping the silicone rings. Although the design of platform 27 ensures the overall function, it increases the cost in production: due to the obstruction of platform 27, the machine cannot be directly withdrawn during demoulding, which increases the production process and increases the overall production cost.

[0004] Therefore, it is necessary to design a liquid storage device 1 that is convenient to use and produce, which is not only convenient for patients to use and clean, but also can simplify the production process and reduce the overall production cost. According to the function, the liquid storage device 1 is divided into three parts: the upper cover 2, the middle layer 3 and the bottom 4. The upper layer and the bottom 4 have the same function as the ordinary liquid storage device 1. The bottom 4 can store a certain volume of liquid. The upper cover 2 and the bottom 4 are fixedly connected to form a whole; in particular, the design of the middle layer 3 combines the platform 27 with the silicone ring, so that the middle layer 3 can achieve the overall sealing of the liquid storage device 1 without relying on the platform 27 that hinders production, making the design and production of the upper cover 2 and the bottom 4 simpler. Utility Model Content

[0005] Based on this, it is necessary to provide a liquid storage device that is easy to use and produce in order to address the above-mentioned shortcomings.

[0006] A liquid reservoir for humidifying pressurized breathable gas delivered to a patient, the liquid reservoir and the gas flow generator being in a working position so that the machine can provide heat to the liquid in the chamber, the liquid reservoir comprising:

[0007] An upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole, the upper cover includes a continuous wall forming a first opening that matches the bottom, an air inlet and an air outlet arranged on the wall to match the airflow generator, and a pipe extending from the air inlet and the air outlet, a buckle and a clip extending from the first opening to be fixed to the base, and a platform in contact with the middle layer, wherein at least one buckle is arranged at the front end of the upper cover, and at least one clip is arranged at the rear end of the upper cover, and the two are configured to be connected together with the bottom to limit the movement of the upper cover, and the platform is configured to limit the displacement of the middle layer and form a seal;

[0008] The middle layer is configured to be detachably connected to the bottom, the middle layer includes a stopper having an outer periphery not smaller than the second opening of the bottom, and a sealing member contacting the upper cover and the bottom, wherein the stopper is configured to contact the end surface of the second opening of the bottom to prevent the middle layer from sinking;

[0009] The bottom includes a second opening that cooperates with the upper cover, at least one front end protruding from the bottom for cooperating with the snap-fitting piece of the upper cover, at least one rear end protruding from the bottom for connecting with the clip of the upper cover, an integrally formed wall, and a heating plate, wherein the heating plate is configured to conduct heat.

[0010] In one embodiment, the horizontal planes where the first opening of the upper cover and the second opening of the bottom are located may be overlapped or parallel, and the first opening and the second opening may be in contact or non-contact.

[0011] In one embodiment, the platform of the upper cover in contact with the middle layer may be continuous or discontinuous.

[0012] In one embodiment, at least a portion of the periphery of the stopper of the middle layer is not smaller than the inner periphery of the second opening of the bottom.

[0013] In one of the embodiments, a locator is provided at the bottom, which may be in the form of a protrusion, a contour, etc.

[0014] The utility model also discloses a liquid storage device for moistening pressurized breathable gas delivered to a patient, wherein when the liquid storage device and the airflow generator are in a working position, the machine can provide heat to the liquid in the chamber, and the liquid storage device comprises:

[0015] An upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole, the upper cover includes a first opening formed by a continuous wall and matched with the bottom, an air inlet and an air outlet arranged on the wall and matched with the airflow generator, and a pipe extending from the air inlet and the air outlet, a buckle and a clip extending from the first opening and fixed to the base, and a platform in contact with the middle layer, wherein the air inlet and the air outlet are in the same plane, the pipes extending from the air inlet and the air outlet are parallel to each other, and the pipe extending from the air inlet includes a first section and a second section, the first section and the second section are not parallel, the second section extends toward the bottom and is perpendicular to the horizontal plane, and the second section is shorter than the first section;

[0016] a middle layer configured to be detachably connected to the bottom portion and to simultaneously seal the upper cover and the bottom portion;

[0017] The bottom includes a second opening for cooperating with the upper cover, at least one receiving portion is arranged at the front end of the bottom for cooperating with the fastener of the upper cover, at least one receiving portion is arranged at the rear end of the bottom for connecting with the clip of the upper cover, an integrally formed wall, and a heating plate configured to conduct heat, wherein the bonding area between the heating plate and the wall of the bottom is not less than 66mm 2 .

[0018] In one embodiment, the end surface of the first opening of the upper cover is in the same horizontal plane, and the end surface of the second opening of the bottom is in the same horizontal plane. The horizontal planes of the first opening of the upper cover and the second opening of the bottom can be overlapped or parallel, and the first opening and the second opening can be in contact or non-contact.

[0019] In one embodiment, the same plane where the air inlet and the air outlet are located is perpendicular to the horizontal plane where the end surfaces of the first opening of the upper cover and the second opening of the bottom are located.

[0020] In one embodiment, the middle layer has a stopper with at least a portion of its periphery not smaller than the inner periphery of the second opening at the bottom, so as to prevent the middle layer from sinking.

[0021] In one of the embodiments, the heating plate is flush with the lowest point of the bottom.

[0022] The utility model also discloses a liquid storage device for moistening pressurized breathable gas delivered to a patient, wherein when the liquid storage device and the airflow generator are in a working position, the machine can provide heat to the liquid in the chamber, and the liquid storage device comprises:

[0023] The upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole;

[0024] a middle layer configured to be detachably connected to the bottom portion and to simultaneously seal the upper cover and the bottom portion;

[0025] The bottom portion includes a second opening opposite to the upper cover, at least one front end protruding from the bottom portion for connecting with the upper cover, at least one rear end protruding from the bottom portion for connecting with the upper cover, an integrally formed wall, and a heating plate;

[0026] The heating plate is configured to conduct heat and is integrally formed with the wall of the bottom to form a chamber for containing liquid, and the minimum capacity of the chamber is 150 mL;

[0027] The connection between the bottom wall and the heating plate has a clamping wall, the heating plate is embedded in the clamping wall, and the area of ​​the bottom wall where the heating plate is embedded is not less than 66mm 2 .

[0028] In one embodiment, the air inlet includes a first section and a second section, and the second section can be connected to a flow divider.

[0029] In one embodiment, the horizontal planes where the first opening of the upper cover and the second opening of the bottom are located can be overlapped or parallel, and the first opening and the second opening can be in contact or non-contact.

[0030] In one embodiment, the middle layer has a stopper with at least a portion of its periphery not smaller than the inner periphery of the second opening at the bottom, so as to prevent the middle layer from sinking.

[0031] The utility model also discloses a liquid storage device for moistening pressurized breathable gas delivered to a patient, wherein when the liquid storage device and the airflow generator are in a working position, the machine can provide heat to the liquid in the chamber, and the liquid storage device comprises:

[0032] The upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole, the upper cover includes a continuous wall forming a first opening matched with the bottom, an air inlet and an air outlet arranged on the wall to match the airflow generator and a pipe extending from the air inlet and the air outlet, a buckle and a clip extending from the first opening to be fixed to the base, and a platform in contact with the middle layer, wherein the platform is configured to abut against the upper seal of the middle layer;

[0033] The middle layer is configured to be detachably connected to the bottom, the middle layer includes a stopper whose periphery is not less than the inner periphery of the second opening of the bottom, and a sealer that contacts the upper cover and the bottom, wherein the sealer is divided into an upper sealer and a lower sealer, the stopper is configured to contact the end surface of the second opening of the bottom to prevent the middle layer from sinking, the upper sealer is configured to contact the platform of the upper cover to form a seal with the upper cover, and the outer edge of the lower sealer is in contact with the inner wall of the bottom to form a seal with the bottom;

[0034] The bottom includes a second opening that cooperates with the upper cover, at least one receiving portion is arranged at the front end of the bottom for cooperating with the snap-fitting piece of the upper cover, at least one receiving portion is arranged at the rear end of the bottom for connecting with the clip of the upper cover, an integrally formed wall, and a heating plate.

[0035] In one embodiment, the end surface of the first opening of the upper cover is in the same horizontal plane, and the end surface of the second opening of the bottom is in the same horizontal plane. The horizontal planes of the first opening of the upper cover and the second opening of the bottom can be overlapping or parallel, and the first opening and the second opening can be in contact or non-contact.

[0036] In one embodiment, the middle layer has a stopper with at least a portion of its periphery not smaller than the inner periphery of the second opening at the bottom, so as to prevent the middle layer from sinking.

[0037] In one embodiment, the upper seal and the lower seal achieve different degrees of deformation by designing their wall thickness, structure, etc.

[0038] The utility model also discloses a liquid storage device for moistening pressurized breathable gas delivered to a patient, wherein when the liquid storage device and the airflow generator are in a working position, the machine can provide heat to the liquid in the chamber, and the liquid storage device comprises:

[0039] The upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole, the upper cover includes a first opening formed by a continuous wall and matched with the bottom, an air inlet and an air outlet arranged on the wall and matched with the air flow generator, and a pipe extending from the air inlet and the air outlet, a buckle and a clip extending from the first opening and fixed to the base, and a platform in contact with the middle layer, wherein at least one clip is arranged at the rear end of the upper cover, and the clip forms a certain angle with the wall at the rear end of the upper cover;

[0040] The middle layer is configured to be detachably connected to the bottom and simultaneously seal the upper cover and the bottom;

[0041] The bottom portion includes a second opening for cooperating with the upper cover, at least one receiving portion is disposed at the front end of the bottom portion for cooperating with the fastening member of the upper cover, at least one receiving portion is disposed at the rear end of the bottom portion for connecting with the clip of the upper cover, an integrally formed wall, and a heating plate;

[0042] Wherein, after the upper cover is connected to the bottom, there is a gap between the platform of the upper cover and the end surface of the second opening of the bottom for accommodating the middle-layer upper sealing member, and the gap is smaller than the height of the upper sealing member.

[0043] In one embodiment, the bottom has at least one fixed portion for increasing the friction between the liquid reservoir and the airflow generator, and the fixed portion of the bottom can be a small protrusion made of the same or different materials.

[0044] In one embodiment, the end surface of the first opening of the upper cover is in the same horizontal plane, and the end surface of the second opening of the bottom is in the same horizontal plane. The horizontal planes of the first opening of the upper cover and the second opening of the bottom can be overlapped or parallel, and the first opening and the second opening can be in contact or non-contact.

[0045] In one embodiment, the middle layer has a stopper with at least a portion of its periphery not smaller than the inner periphery of the second opening at the bottom, so as to prevent the middle layer from sinking.

[0046] In one of the embodiments, the bottom further has a corresponding step configured to guide the liquid reservoir 1 into the airflow generator.

[0047] The liquid storage device of the present invention has at least the following beneficial effects:

[0048] 1) The flat upper and lower detachable structure is easier to install and use: Most of the upper and lower covers of liquid storage devices on the market are connected by hinges. The advantage of hinge connection is that it can ensure the integration of the liquid storage device and avoid the loss of parts. The hinge connection methods can be divided into two types: inseparable and detachable: a) Although the inseparable hinge connection ensures the integration of the liquid storage device, there is an unreasonable hinge design phenomenon. The upper cover of the liquid storage device cannot be completely spread out on a flat surface and can only be suspended in the air by the hinge. It is easy for uneven force to overturn the liquid storage device or close the cover during water filling. The former may cause the water in the liquid storage device to spill, and the latter may cause the user's fingers to be pinched; b) The detachable hinge form cannot be easily disassembled due to the mechanical structure of the hinge, and there is a risk of damage to the hinge of the upper cover during the disassembly process; due to structural requirements, there is a certain gap at the connection of the hinge, which is easy to hide dirt and is difficult to clean. The seal in the liquid storage container needs to be pressed and contacted with the platform of the upper and lower covers of the liquid storage container to form a seal, and the area of ​​the platform must be sufficient to achieve a good seal. Most liquid storage containers on the market directly set the platform of the lower cover at the opening of the lower cover, which will block the direct output of the product during production, thereby increasing production costs. The connection structure of the upper and lower covers in the liquid storage container is designed as a simple detachable connection, and the seal 32 is redesigned to be joined with the plane. The liquid storage container is divided into three parts: the upper cover 2, the middle layer 3 and the bottom 4. The complex structure of the parts is simplified, so that the three parts are easier to demold in production without the platform 27 or protrusions. The parts are connected by simple mechanical connections: a) The connection between the upper cover 2 and the bottom 4 is connected in the form of a protruding buckle, which avoids the problem that the hinge cannot be disassembled; b) The middle layer 3 includes a seal 32 and a stopper 31, which are produced by an integrated molding method. The stopper 31 of the middle layer 3 contacts the direct opening end face of the bottom 4 to form a platform 27 that limits the movement of the seal 32. The connection points of the three components are designed to be flat, and through a simple connection design, a) the difficulty in producing the lower cover of the liquid storage container is solved; b) the upper and lower covers can be easily connected or disassembled; c) directly installing the middle layer 3 on the bottom 4 on the plane is easier to operate than installing the seal 32 on the upper cover 2 fixed by a hinge, thereby improving user friendliness; d) the opening end face of the bottom 4 is flat, which is less likely to mislead the user's judgment of the water level than the non-flat opening end face of the bottom 4; e) the completely separable upper cover 2 and bottom 4 will not hinder the user from adding water due to the existence of the upper cover 2.

[0049] 2) Structural design of the middle layer 3: The sealing ring of the ordinary liquid storage device is fixedly connected to the upper cover and then contacts the platform of the base. This connection method requires the user to ensure that the upper cover and the sealing ring are tightly connected, otherwise the sealing ring is very likely to fall off when the upper cover is buckled; some liquid storage devices and sealing rings are made in an integrated manner. This connection method usually makes the sealing ring difficult to replace and has high maintenance costs or high replacement costs. The choice of sealing materials also needs to be selected according to the characteristics of the liquid storage material, and the selection range is smaller. Combining the platform that restricts the seal with the ordinary seal can not only optimize the production of components, but also provide double protection for the gas and liquid seals of the overall liquid storage device. The middle layer 3 includes a stopper 31, an upper seal 321 and a lower seal 322. The stopper 31 has at least a portion of an outer periphery that is not smaller than the inner periphery of the second opening 42 of the bottom 4, which is used to prevent the middle layer 3 from sinking. The upper seal includes a support arm with a certain height and an extended thin sheet. There is a certain gap between the thin sheet and the stopper 31 to facilitate the deformation of the upper seal 321 when it contacts the platform 27 of the upper cover 2. The outer periphery of the lower seal 322 is slightly larger than the inner periphery of the wall of the bottom 4 of the liquid storage container. It can rely on its own material properties to deform during connection to seal the opening of the bottom 4, forming a tight anti-overflow ring.

[0050] 3) The heating plate is integrally molded with the bottom 4 and connected 41: The heating plate is usually connected to the wall of the bottom through silicone, rubber, etc., and materials such as silicone and rubber are prone to deformation and aging due to continuous exposure to high temperatures, which leads to reduced sealing of the liquid storage container. Therefore, the heating plate is integrally molded with the wall 41 of the bottom 4 of the liquid storage container through a molded connection, which can effectively reduce the separation seams or connection points, provide higher structural strength and stability, reduce the risk of leakage, and reduce redundant processes, which can improve production and inspection efficiency, save time and labor costs, and reduce product defective rates.

[0051] 4) Environmental friendliness: Combining the above three points, the redesign of the liquid storage tank, whether in terms of production and manufacturing or material selection, has greatly reduced unnecessary waste of resources, making the overall production process simpler, using less materials while ensuring airtightness. Resource conservation in the production process is conducive to reducing greenhouse gas emissions, thereby alleviating the pressure of climate change, reducing the exploitation of natural resources, reducing damage to the natural environment, and building a healthier and sustainable future. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the structure of the liquid storage device in Example 1 of the utility model;

[0053] Figure 2 This is a schematic diagram of the explosion structure of the liquid storage device in Example 1 of the utility model;

[0054] Figure 3 This is a schematic diagram of the partitions of the liquid storage device in Example 1 of the utility model;

[0055] Figure 4 It is a top view of the upper cover of the liquid storage device in Example 1 of the utility model;

[0056] Figure 5 This is a schematic diagram of the explosion structure of the middle layer of the liquid storage device in Example 1 of the utility model;

[0057] Figure 6 This is a schematic diagram of the explosion structure of the bottom of the liquid storage device in Example 1 of the utility model;

[0058] Figure 7 The fastening member is in the form of the upper cover of the liquid storage device in the first embodiment of the utility model;

[0059] Figure 8 This is a schematic angle diagram of the clip of the upper cover of the liquid storage device in Example 1 of the utility model;

[0060] Fig. 9 This is a schematic diagram of the connection between the upper cover and the bottom of the liquid storage device in Example 1 of the utility model;

[0061] Fig.10 This is a schematic diagram of the position of the platform of the upper cover of the liquid storage device in Example 1 of the utility model;

[0062] Fig.11 This is a schematic diagram of the platform of the upper cover of the liquid storage device in Example 1 of the utility model;

[0063] Fig.12 This is a schematic diagram of the platform of the upper cover of the liquid storage device in Example 1 of the utility model;

[0064] Fig.13 It is a schematic diagram of the form of the stopper of the middle layer of the liquid storage device in Example 1 of the utility model;

[0065] Fig.14 This is a schematic diagram of the structural form of the sealing member of the middle layer of the liquid storage device in Example 1 of the utility model;

[0066] Fig.15 It is a schematic diagram of a gap formed after the upper cover platform and the bottom of the liquid storage device in Example 1 of the utility model are connected;

[0067] Fig.16 This is a schematic diagram of the structure in which the stopper of the middle layer of the liquid storage device in Example 1 of the present utility model is connected to the bottom;

[0068] Fig.17This is a schematic structural diagram of the connection between the bottom wall of the liquid storage container and the heating plate in Example 1 of the utility model;

[0069] Fig.18 A top view of the connection between the bottom wall of the liquid storage container and the heating plate in Example 1 of the utility model;

[0070] Fig.19 This is a schematic diagram of the connection between the air inlet and the diverter of the upper cover of the liquid storage device in Example 2 of the utility model;

[0071] Fig. 20 This is a schematic diagram of the structure of the flow divider in Example 2 of the utility model;

[0072] Fig.21 It is a schematic structural diagram of parallel pipes extending from the uniform air inlet and air outlet of the upper cover of the liquid storage device in Example 3 of the present utility model in the horizontal plane;

[0073] Fig. 22 This is a schematic structural diagram of parallel pipes extending from the uniform air inlet and air outlet of the upper cover of the liquid storage device in Example 3 of the present utility model in a plane perpendicular to the horizontal plane;

[0074] Fig.23 This is a schematic diagram of the structure of the pipelines extending from the air inlet and the air outlet of the upper cover of the liquid storage device in Example 3 of the utility model;

[0075] Fig.24 This is a schematic diagram showing that the first opening of the upper cover and the second opening of the bottom are in different planes in an embodiment of the utility model. DETAILED DESCRIPTION

[0076] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the utility model. The terms used in the utility model specification herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0078] The utility model divides the liquid storage container 1 into three parts: an upper cover 2, a middle layer 3 and a bottom 4. Fig.24-A, the end surface of the first opening 22 of the upper cover 2 is in the same horizontal plane in some embodiments, and the end surface of the second opening 42 of the bottom 4 is in the same horizontal plane in some embodiments. At this time, the horizontal planes of the first opening 22 of the upper cover 2 and the second opening 42 of the bottom 4 can be overlapped or parallel, and the first opening 22 and the second opening 42 can be in contact or non-contact; Fig.24 -B, the end surface of the first opening 22 of the upper cover 2 is at different levels in some embodiments, forming a stepped plane, and the end surface of the second opening 42 of the bottom 4 is at different levels in some embodiments, forming a stepped plane. The connection structure of the upper cover 2 and the bottom 4 is designed to be a simple and completely detachable connection, and the connection method can be a buckle, a magnetic attraction, a push-pull buckle, etc. The middle layer is directly contacted and connected with the bottom 4 to form the basis for the sealing of the bottom 4, and then joined with the upper cover 2, and the platform 27 of the upper cover 2 squeezes the middle layer 3 to achieve an overall sealed state.

[0079] Several structures of a liquid storage device of the present utility model are described below with reference to specific examples.

[0080] Example 1

[0081] In this embodiment, a liquid storage device 1 for moistening pressurized breathable gas delivered to a patient can provide heat to the liquid stored in the device chamber when connected to the airflow generator in a working position. The liquid storage device 1 includes an upper cover 2, a middle layer 3 and a bottom 4, wherein Figure 3 As shown, the liquid storage container 1 is divided into a front end and a rear end, and the upper cover 2, the middle layer 3 and the bottom 4 have corresponding front ends and rear ends.

[0082] The upper cover 2 is used to buckle with the bottom 4 and contact and seal with the middle layer 3 to form a detachable whole; specifically, Figures 1 to 18As shown, the upper cover 2 includes a continuous wall 21 forming a first opening 22 that matches the bottom 4, an air inlet 23 and an air outlet 24 that match the air flow generator and a pipe extending from the air inlet 23 and the air outlet 24, a fastener 25 and a clip 26 that extend from the first opening 22 and are fixed to the base, and a platform 27 that contacts the middle layer 3. The continuous wall 21 of the upper cover 2 can be smoothly formed or connected in a zigzag manner. The outer wall profile can be designed according to the position provided by the air flow generator. The wall 21 has at least partial rigidity and can be made of one or more materials such as polyethylene, polypropylene, polycarbonate, silicone, rubber, thermoplastic elastomer, etc.; protrusions or grooves can be provided on the wall 21 to increase friction, facilitate user gripping or be more closely connected with the air flow generator. The end surface of the first opening 22 formed by the wall 21 is on the same horizontal plane, and the upper cover 2 and the bottom 4 are connected in appearance; the inner periphery of the first opening 22 of the upper cover 2 is greater than or equal to the outer periphery of the sealing member 32 of the middle layer 3. The air inlet 23 and the air outlet 24 on the wall 21 are in the same plane, which can be perpendicular to the horizontal plane, or at a certain angle or parallel to the horizontal plane. The contours of the air inlet 23 and the air outlet 24 can be circular, elliptical, semicircular or square. The pipes extending from the air inlet 23 and the air outlet 24 are parallel to each other, and the air inlet 23 includes a first section and a second section. The first section and the second section are not parallel. The second section extends toward the bottom 4 and is perpendicular to the horizontal plane, and the length of the second section is shorter than that of the first section to prevent contact or proximity to the water surface and splashing water. The pipes extending from the air inlet 23 and the air outlet 24 are made of the same material as the rigid part of the wall 21 of the upper cover 2. At least one fastener 25 fixed to the base extends from the front end of the first opening 22. The fastener 25 can be connected with the receiving portion 43 of the bottom 4, such as Figure 7 As shown, the connection form can be snap-fit, magnetic attraction, etc., so that the front end of the upper cover 2 is fixed to the front end of the bottom 4; the outer contour of the buckle 25 can be square, U-shaped or other shapes that are easy to buckle, and the buckle 25 has an inclined surface to facilitate the buckling of the upper cover 2 and the bottom 4; the buckle 25 can be made of polyethylene, polypropylene, polycarbonate, silicone, thermoplastic elastomer and other materials. At least one clip 26 fixed to the base extends from the rear end of the first opening 22, and the clip 26 can be connected with the receiving portion 43 of the bottom 4 to fix the rear end of the upper cover 2 to the rear end of the bottom 4. The connection form can be snap-fit, magnetic attraction, etc.; as shown Figure 8 As shown, the extended clip 26 forms a certain angle with the wall 21 at the rear end of the upper cover 2, and the angle is about 0-75 degrees, so that there is a certain distance between the clip 26 and the bottom 4, which is convenient for the user's fingers to grasp. The upper cover 2 has a platform 27 in contact with the middle layer 3 (the platform does not necessarily refer to a step on the same horizontal plane). After the upper cover 2 is connected to the bottom 4, as shown in FIG. Fig.15As shown, there is a gap 2742 between the platform 27 and the end surface of the second opening 42 of the bottom 4 to accommodate the upper seal 32 of the middle layer 3, and the gap 2742 is smaller than the height of the upper seal 32; Fig.10 As shown, the platform 27 can be arranged at the end surface of the first opening 22, or can be arranged above the end surface. The platform 27 is extended from the wall 21 of the upper cover 2, and the maximum distance of the extension does not exceed 15mm, ensuring that the production can be demoulded and providing a sufficient contact surface for the middle layer 3 to achieve sealing; Fig.11 As shown, the platform 27 may be uniformly extended or non-uniformly extended, and may be continuous or non-continuous, such as Fig.12 As shown, the contour shape of the inner periphery of the platform 27 can be the contour of the upper cover 2 in the horizontal plane, or it can be square, oval or circular. The platform 27 can be made of one or more materials such as polyethylene, polypropylene, polycarbonate, silicone, rubber, etc.

[0083] The middle layer 3 is configured to be detachably connected to the bottom 4. The middle layer 3 includes a stopper 31 whose periphery is not less than the inner periphery of the second opening 42 of the bottom 4, and a seal 32 that contacts the upper cover 2 and the bottom 4. The stopper 31 is configured to contact the end surface of the second opening 42 of the bottom 4 to prevent the middle layer 3 from sinking; the periphery of the stopper 31 is not less than the inner periphery of the second opening 42 of the bottom 4, such as Fig.13 As shown, the inner and outer contours of the stopper 31 may be the contours of the bottom 4 in the horizontal plane, or may be square, oval, wavy, etc.; Fig.14As shown, the inner periphery of the stopper 31 may have an upward anti-overflow wall 311 for preventing the liquid in the container from overflowing due to excessive liquid. The height of the anti-overflow wall 311 is about 1-8 mm. It has a downward stopper wall 312 to limit the lower seal 322 from shrinking inward when squeezed by the wall 41 of the bottom 4 and unable to achieve the sealing function, and to make the connection between the lower seal 322 and the stopper 31 more stable. The height of the stopper wall 312 is about 1-15 mm. The thickness of the stopper 31 is about 1-15 mm to prevent the stopper 31 from being too thick and increasing the overall weight and being inconvenient to use. The main body of the stopper 31 may be composed of rigid materials such as polyethylene, polypropylene, and polycarbonate, and the anti-overflow wall 311 may be made of flexible materials with good sealing properties such as silicone and rubber, or the same material as the main body of the stopper 31. The seal 32 is divided into an upper seal 32 and a lower seal 322. The upper seal 32 is configured to contact the platform 27 of the upper cover 2 to form a seal with the upper cover 2. The outer edge of the lower seal 322 fits the inner wall of the bottom 4 to form a seal with the bottom 4. The inner edge is connected to the stopper 31. Specifically, the upper seal includes a support arm with a certain height and an extended thin sheet. There is a certain gap between the thin sheet and the stopper 31 to facilitate the deformation of the upper seal 321 when it contacts the platform 27 of the upper cover 2. The outer periphery of the lower seal 322 is slightly larger than the inner periphery of the wall of the bottom 4 of the liquid storage container 1. It can rely on its own material properties to deform when connected to seal the opening of the bottom 4, forming at least one layer of tight anti-overflow ring; the upper seal 32 1. The lower seal 322 can be made of the same material with the same hardness or different hardness, and can be a flexible material with good sealing performance such as silicone, rubber, thermoplastic elastomer, etc. The overall height of the upper seal 321 is about 3-10mm, the thickness of the support arm is about 0.5-5mm, the thickness of the sheet is about 0.3-2.5mm, the overall height of the lower seal 322 is about 3-15mm, and the thickness is about 0.5-5mm, to prevent the flexible material from being too thin or too thick and not easy to deform and seal with the upper cover 2 or the bottom 4; the stopper 31 can be provided with at least one through hole to allow the seal 32 to pass through during production, thereby forming the upper seal 321 and the lower seal 322 at the same time.

[0084] The bottom 4 includes a second opening 42 that cooperates with the upper cover 2, at least one receiving portion 43 is arranged at the front end of the bottom 4 for cooperating with the fastener 25 of the upper cover 2, at least one receiving portion 43 is arranged at the rear end of the bottom 4 for connecting with the clip 26 of the upper cover 2, an integrally formed wall 41, and a heating plate 44 configured to transfer heat. The wall 41 of the bottom 4 is smoothly formed integrally with the heating plate 44, and the outer wall contour can be designed according to the position provided by the airflow generator to form a chamber that can accommodate a certain volume of liquid. The minimum capacity of the chamber is 150mL, and the rear end of the bottom 4 is provided with a portion for the user's fingers to grasp; the wall 41 can extend with a corresponding step matching the airflow generator, configured to guide the liquid reservoir 1 into the airflow generator, and the wall 41 has at least one fixed portion 45 for increasing the friction between the liquid reservoir 1 and the airflow generator; the wall 41 of the bottom 4 is made of a rigid material, which can be polyethylene, polypropylene, polycarbonate, etc., and the fixed portion 45 can be a small protrusion of the same material as the wall 41 of the bottom 4, or made of a flexible material such as silicone, rubber, thermoplastic elastomer, etc.; the end face of the second opening 42 of the bottom 4 is on the same horizontal plane, and the first opening 22 of the bottom 4 is configured to contact and connect with the stopper 31 of the middle layer 3 and limit the downward movement of the middle layer 3. The receiving portion 43 at the front and rear ends of the bottom 4 may be in the same or different forms, and may be a protrusion, a groove, a magnet, etc. The bottom 4 may also be provided with a positioning member for facilitating the user to quickly position the upper cover 2 during installation, and the positioning member may be in the form of a protrusion, a magnet, etc.; Fig.17 and Fig.18 As shown, the heating plate 44 is integrally connected with the wall 41 of the bottom 4, and a clamping wall 441 is provided at the connection between the wall 41 of the bottom 4 and the heating plate 44, and the heating plate 44 is embedded in the clamping wall 441. The width of the clamping wall 441 is at least 0.3 mm, and the connection area between the wall 41 of the bottom 4 and the heating plate 44 (the heating plate 44 is embedded in the wall 41 of the bottom 4) is not less than 66 mm 2 The thickness of the heating plate 44 does not exceed 1 mm, and the overall area does not exceed 16000 mm 2 , ensuring that the heating plate 44 is firmly connected to the wall 41 of the bottom 4 and can conduct heat; the material of the heating plate 44 can be stainless steel, aluminum alloy, ceramic coating, etc., usually stainless steel is used. Stainless steel is corrosion-resistant and durable, and can resist erosion by many chemicals such as water, steam, acid, and alkali; the heating plate is parallel to the horizontal plane and flush with the lowest point of the bottom 4, ensuring the overall stability of the liquid storage container 1.

[0085] In another embodiment, the heating plate and the wall 41 of the bottom 4 may be connected by ultrasonic connection, welding or other connection methods without adding additional materials.

[0086] In another embodiment, the upper cover can be in the form of a platform-less form, and the upper seal of the middle layer is symmetrically structured with the lower seal, the outer edge of the upper seal 321 fits against the inner wall of the upper cover 2 to form a seal with the upper cover 2, and the outer edge of the lower seal 322 fits against the inner wall of the bottom 4 to form a seal with the bottom 4. Specifically, the outer periphery of the upper seal 321 is slightly larger than the inner periphery of the wall 21 of the upper cover 2 of the liquid storage container 1, and the outer periphery of the lower seal 322 is slightly larger than the inner periphery of the wall 41 of the bottom 4 of the liquid storage container 1. The two can rely on their own material properties to deform when connected to seal the opening, thereby forming a tight anti-overflow ring.

[0087] Example 2

[0088] The liquid storage device 1 of this embodiment for moistening the pressurized breathable gas delivered to the patient can provide heat to the liquid stored in the chamber when it is connected to the airflow generator in the working position. The liquid storage device 1 includes an upper cover 2, a middle layer 3 and a bottom 4, wherein the liquid storage device 1 is divided into a front end and a rear end, and the upper cover 2, the middle layer 3 and the bottom 4 have corresponding front ends and rear ends. The difference between the air delivery pipeline provided in this embodiment and the liquid storage device 1 in embodiment 1 is that the second section of the air inlet 23 is connected to a diverter 5. Fig.19 and Fig. 20 As shown, the pipes extending from the air inlet 23 and the air outlet 24 are parallel to each other, and the air inlet 23 includes a first section and a second section, the first section and the second section are not parallel, the second section extends toward the bottom 4 and is perpendicular to the horizontal plane, and can be connected to a diverter 5 for changing the direction of the airflow, and the maximum extent of the second section extending downward can be flush with the end surface of the first opening 22 of the upper cover 2; the diverter 5 is cylindrical, with an overall height of about 10-50mm, one end of which has an interface 52 connected to the second section, and the other end is closed to prevent the airflow from blowing directly to the water surface The wall 51 formed by connecting the two ends causes water to splash, and an opening 53 is arranged on the wall 51, and the pressurized airflow flows out from the opening 53 to change the direction of the airflow blowing toward the water surface. A baffle 54 of a certain length can be extended from the opening 53. The diverter 5 can be made of one or more materials such as polyethylene, polypropylene, polycarbonate, silicone, rubber, etc.; the connection method between the diverter 5 and the second section can be connected by relying on the deformation of the material (such as a snap or soft rubber friction connection), or it can be a mechanical connection such as magnetic attraction, or it can be a non-detachable connection such as ultrasonic.

[0089] Example 3

[0090] The liquid storage device 1 of this embodiment for moistening the pressurized breathable gas delivered to the patient can provide heat to the liquid stored in the chamber when it is connected to the airflow generator in the working position. The liquid storage device 1 includes an upper cover 2, a middle layer 3 and a bottom 4, wherein the liquid storage device 1 is divided into a front end and a rear end, and the upper cover 2, the middle layer 3 and the bottom 4 have corresponding front ends and rear ends. The difference between the air delivery pipeline provided in this embodiment and the liquid storage device 1 in embodiment 1 is that the pipelines extending from the air inlet 23 and the air outlet 24 are not parallel. Fig.21 As shown, specifically, the pipes extending from the air outlet 24 and the air inlet 23 are uniform, and their axes are parallel in the horizontal plane, but not parallel in the plane perpendicular to the horizontal plane. 1) The pipe extending from the air inlet 23 can be slightly inclined toward the rear end of the liquid storage 1 to prevent the gas with water vapor from flowing back into the machine. 2) The air inlet 23 includes a first section and a second section, which are not parallel to each other, and the second section extends toward the bottom 4 and is perpendicular to the horizontal plane. Fig. 22 As shown, specifically, the pipes extending from the air outlet 24 and the air inlet 23 are uniform, their axes are not parallel in the horizontal plane, but are parallel in a plane perpendicular to the horizontal plane, and the pipes may or may not intersect.

[0091] In another embodiment, specifically, the pipes extending from the air outlet 24 and the air inlet 23 are uniform, and their axes are not parallel in the horizontal plane and are not parallel in the plane perpendicular to the horizontal plane.

[0092] In another embodiment, if Fig.23 As shown, specifically, the pipes extending from the air inlet 23 and the air outlet 24 may also be non-uniformly changed.

[0093] In addition, the technical features in the above embodiments may be combined as needed to obtain a liquid storage device 1 including all or part of the above technical features.

[0094] The heated air delivery duct of the utility model has at least the following beneficial effects:

[0095] 1) The flat upper and lower detachable structure is easier to install and use: Most of the upper and lower covers of liquid storage devices on the market are connected by hinges. The advantage of hinge connection is that it can ensure the integration of the liquid storage device and avoid the loss of parts. The hinge connection methods can be divided into two types: inseparable and detachable: a) Although the inseparable hinge connection ensures the integration of the liquid storage device, there is an unreasonable hinge design phenomenon. The upper cover of the liquid storage device cannot be completely spread out on a flat surface and can only be suspended in the air by the hinge. It is easy for uneven force to overturn the liquid storage device or close the cover during water filling. The former may cause the water in the liquid storage device to spill, and the latter may cause the user's fingers to be pinched; b) The detachable hinge form cannot be easily disassembled due to the mechanical structure of the hinge, and there is a risk of damage to the hinge of the upper cover during the disassembly process; due to structural requirements, there is a certain gap at the connection of the hinge, which is easy to hide dirt and is difficult to clean. The seal in the liquid storage container needs to be pressed and contacted with the platform of the upper and lower covers of the liquid storage container to form a seal, and the area of ​​the platform must be sufficient to achieve a good seal. Most liquid storage containers on the market directly set the platform of the lower cover at the opening of the lower cover, which will block the direct output of the product during production, thereby increasing production costs. The connection structure of the upper and lower covers in the liquid storage container is designed as a simple detachable connection, and the seal 32 is redesigned to be joined with the plane. The liquid storage container is divided into three parts: the upper cover 2, the middle layer 3 and the bottom 4. The complex structure of the parts is simplified, so that the three parts are easier to demold in production without the platform 27 or protrusions. The parts are connected by simple mechanical connections: a) The connection between the upper cover 2 and the bottom 4 is connected in the form of a protruding buckle, which avoids the problem that the hinge cannot be disassembled; b) The middle layer 3 includes a seal 32 and a stopper 31, which are produced by an integrated molding method. The stopper 31 of the middle layer 3 contacts the direct opening end face of the bottom 4 to form a platform 27 that limits the movement of the seal 32. The connection points of the three components are designed to be flat, and through a simple connection design, a) the difficulty in producing the lower cover of the liquid storage container is solved; b) the upper and lower covers can be easily connected or disassembled; c) directly installing the middle layer 3 on the bottom 4 on the plane is easier to operate than installing the seal 32 on the upper cover 2 fixed by a hinge, thereby improving user friendliness; d) the opening end face of the bottom 4 is flat, which is less likely to mislead the user's judgment of the water level than the non-flat opening end face of the bottom 4; e) the completely separable upper cover 2 and bottom 4 will not hinder the user from adding water due to the existence of the upper cover 2.

[0096] 2) Structural design of the middle layer 3: The sealing ring of the ordinary liquid storage device is fixedly connected to the upper cover and then contacts the platform of the base. This connection method requires the user to ensure that the upper cover and the sealing ring are tightly connected, otherwise the sealing ring is very likely to fall off when the upper cover is buckled; some liquid storage devices and sealing rings are made in an integrated manner. This connection method usually makes the sealing ring difficult to replace and has high maintenance costs or high replacement costs. The choice of sealing materials also needs to be selected according to the characteristics of the liquid storage material, and the selection range is smaller. Combining the platform that restricts the seal with the ordinary seal can not only optimize the production of components, but also provide double protection for the gas and liquid seals of the overall liquid storage device. The middle layer 3 includes a stopper 31, an upper seal 321 and a lower seal 322. The stopper 31 has at least a portion of an outer periphery that is not smaller than the inner periphery of the second opening 42 of the bottom 4, which is used to prevent the middle layer 3 from sinking. The upper seal includes a support arm with a certain height and an extended thin sheet. There is a certain gap between the thin sheet and the stopper 31 to facilitate the deformation of the upper seal 321 when it contacts the platform 27 of the upper cover 2. The outer periphery of the lower seal 322 is slightly larger than the inner periphery of the wall of the bottom 4 of the liquid storage container. It can rely on its own material properties to deform during connection to seal the opening of the bottom 4, forming a tight anti-overflow ring.

[0097] 3) The heating plate is integrally molded with the bottom 4 and connected 41: The heating plate is usually connected to the wall of the bottom through silicone, rubber, etc., and materials such as silicone and rubber are prone to deformation and aging due to continuous exposure to high temperatures, which leads to reduced sealing of the liquid storage container. Therefore, the heating plate is integrally molded with the wall 41 of the bottom 4 of the liquid storage container through a molded connection, which can effectively reduce the separation seams or connection points, provide higher structural strength and stability, reduce the risk of leakage, and reduce redundant processes, which can improve production and inspection efficiency, save time and labor costs, and reduce product defective rates.

[0098] 4) Environmental friendliness: Combining the above three points, the redesign of the liquid storage tank, whether in terms of production and manufacturing or material selection, has greatly reduced unnecessary waste of resources, making the overall production process simpler, using less materials while ensuring airtightness. Resource conservation in the production process is conducive to reducing greenhouse gas emissions, thereby alleviating the pressure of climate change, reducing the exploitation of natural resources, reducing damage to the natural environment, and building a healthier and sustainable future.

[0099] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0100] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A liquid storage device, which can provide heat to the liquid in the chamber when the liquid storage device and the air flow generator are in a working position, characterized in that: The liquid reservoir comprises: An upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole, the upper cover includes a continuous wall forming a first opening that matches the bottom, an air inlet and an air outlet arranged on the wall to match the airflow generator, and a pipe extending from the air inlet and the air outlet, a buckle and a clip extending from the first opening to be fixed to the base, and a platform in contact with the middle layer, wherein at least one buckle is arranged at the front end of the upper cover, and at least one clip is arranged at the rear end of the upper cover, and the two are configured to be connected together with the bottom to limit the movement of the upper cover, and the platform is configured to limit the displacement of the middle layer and form a seal; The middle layer is configured to be detachably connected to the bottom, the middle layer includes a stopper having an outer periphery not smaller than the second opening of the bottom, and a sealing member contacting the upper cover and the bottom, wherein the stopper is configured to contact the end surface of the second opening of the bottom to prevent the middle layer from sinking; The bottom includes a second opening that cooperates with the upper cover, at least one front end protruding from the bottom for cooperating with the snap-fitting piece of the upper cover, at least one rear end protruding from the bottom for connecting with the clip of the upper cover, an integrally formed wall, and a heating plate, wherein the heating plate is configured to conduct heat.

2. The liquid storage device according to claim 1, characterized in that: The horizontal planes where the first opening of the upper cover and the second opening of the bottom are located are overlapped or parallel, and the first opening and the second opening may be in contact or not in contact.

3. The liquid storage device according to claim 1, characterized in that: The platform of the upper cover in contact with the middle layer is continuous or discontinuous.

4. The liquid storage device according to claim 1, characterized in that: At least a portion of the periphery of the stopper of the middle layer is not smaller than the inner periphery of the second opening of the bottom.

5. The liquid storage device according to claim 1, characterized in that: A locator is arranged at the bottom.

6. A liquid storage device, which can provide heat to the liquid in the chamber when the liquid storage device and the air flow generator are in a working position, characterized in that: The liquid reservoir comprises: An upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole, the upper cover includes a first opening formed by a continuous wall and matched with the bottom, an air inlet and an air outlet arranged on the wall and matched with the airflow generator, and a pipe extending from the air inlet and the air outlet, a buckle and a clip extending from the first opening and fixed to the base, and a platform in contact with the middle layer, wherein the air inlet and the air outlet are in the same plane, the pipes extending from the air inlet and the air outlet are parallel to each other, and the pipe extending from the air inlet includes a first section and a second section, the first section and the second section are not parallel, the second section extends toward the bottom and is perpendicular to the horizontal plane, and the second section is shorter than the first section; a middle layer configured to be detachably connected to the bottom portion and to simultaneously seal the upper cover and the bottom portion; The bottom includes a second opening for cooperating with the upper cover, at least one receiving portion is arranged at the front end of the bottom for cooperating with the fastener of the upper cover, at least one receiving portion is arranged at the rear end of the bottom for connecting with the clip of the upper cover, an integrally formed wall, and a heating plate configured to conduct heat, wherein the bonding area between the heating plate and the wall of the bottom is not less than 66mm 2 .

7. The liquid storage device according to claim 6, characterized in that: The end surface of the first opening of the upper cover is in the same horizontal plane, the end surface of the second opening of the bottom is in the same horizontal plane, the horizontal planes of the first opening of the upper cover and the second opening of the bottom are overlapped or parallel, and the first opening and the second opening are in contact or non-contact.

8. The liquid storage device according to claim 6, characterized in that: The same plane where the air inlet and the air outlet are located is in a vertical relationship with the horizontal plane where the end surfaces of the first opening of the upper cover and the second opening of the bottom are located.

9. The liquid storage device according to claim 6, characterized in that: The middle layer has a stopper with at least a portion of its periphery not smaller than the inner periphery of the second opening at the bottom, so as to prevent the middle layer from sinking.

10. The liquid storage device according to claim 6, characterized in that: The heating plate is flush with the lowest point of the bottom.

11. A liquid storage device, which can provide heat to the liquid in the chamber when the liquid storage device and the air flow generator are in a working position, characterized in that: The liquid reservoir comprises: The upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole; a middle layer configured to be detachably connected to the bottom portion and to simultaneously seal the upper cover and the bottom portion; The bottom portion includes a second opening opposite to the upper cover, at least one front end protruding from the bottom portion for connecting with the upper cover, at least one rear end protruding from the bottom portion for connecting with the upper cover, an integrally formed wall, and a heating plate; The heating plate is configured to conduct heat and is integrally formed with the wall of the bottom to form a chamber for containing liquid, and the minimum capacity of the chamber is 150 mL; The connection between the bottom wall and the heating plate has a clamping wall, the heating plate is embedded in the clamping wall, and the area of ​​the bottom wall where the heating plate is embedded is not less than 66mm 2 .

12. The liquid storage device according to claim 11, characterized in that: The horizontal planes where the first opening of the upper cover and the second opening of the bottom are located are overlapped or parallel, and the first opening and the second opening are in contact or non-contact.

13. The liquid storage device according to claim 11, characterized in that: The middle layer has a stopper with at least a portion of its periphery not smaller than the inner periphery of the second opening at the bottom, so as to prevent the middle layer from sinking.

14. A liquid storage device, which can provide heat to the liquid in the chamber when the liquid storage device and the air flow generator are in a working position, characterized in that: The liquid reservoir comprises: The upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole, the upper cover includes a continuous wall forming a first opening matched with the bottom, an air inlet and an air outlet arranged on the wall to match the airflow generator and a pipe extending from the air inlet and the air outlet, a buckle and a clip extending from the first opening to be fixed to the base, and a platform in contact with the middle layer, wherein the platform is configured to abut against the upper seal of the middle layer; The middle layer is configured to be detachably connected to the bottom, the middle layer includes a stopper whose periphery is not less than the inner periphery of the second opening of the bottom, and a sealer that contacts the upper cover and the bottom, wherein the sealer is divided into an upper sealer and a lower sealer, the stopper is configured to contact the end surface of the second opening of the bottom to prevent the middle layer from sinking, the upper sealer is configured to contact the platform of the upper cover to form a seal with the upper cover, and the outer edge of the lower sealer is in contact with the inner wall of the bottom to form a seal with the bottom; The bottom includes a second opening that cooperates with the upper cover, at least one receiving portion is arranged at the front end of the bottom for cooperating with the snap-fitting piece of the upper cover, at least one receiving portion is arranged at the rear end of the bottom for connecting with the clip of the upper cover, an integrally formed wall, and a heating plate.

15. The liquid storage device according to claim 14, characterized in that: The end surface of the first opening of the upper cover is in the same horizontal plane, the end surface of the second opening of the bottom is in the same horizontal plane, the horizontal planes of the first opening of the upper cover and the second opening of the bottom are overlapped or parallel, and the first opening and the second opening are in contact or non-contact.

16. The liquid storage device according to claim 14, characterized in that: The middle layer has a stopper with at least a portion of its periphery not smaller than the inner periphery of the second opening at the bottom, so as to prevent the middle layer from sinking.

17. The liquid storage device according to claim 14, characterized in that: The upper sealing member and the lower sealing member achieve different deformation degrees by designing their wall thickness and structure.

18. A liquid storage device, wherein when the liquid storage device and the air flow generator are in a working position, the machine can provide heat to the liquid in the chamber, characterized in that: The liquid reservoir comprises: The upper cover is configured to be buckled with the bottom and sealed with the middle layer to form a detachable whole, the upper cover includes a first opening formed by a continuous wall and matched with the bottom, an air inlet and an air outlet arranged on the wall and matched with the air flow generator, and a pipe extending from the air inlet and the air outlet, a buckle and a clip extending from the first opening and fixed to the base, and a platform in contact with the middle layer, wherein at least one clip is arranged at the rear end of the upper cover, and the clip forms a certain angle with the wall at the rear end of the upper cover; The middle layer is configured to be detachably connected to the bottom and simultaneously seal the upper cover and the bottom; The bottom portion includes a second opening for cooperating with the upper cover, at least one receiving portion is disposed at the front end of the bottom portion for cooperating with the fastening member of the upper cover, at least one receiving portion is disposed at the rear end of the bottom portion for connecting with the clip of the upper cover, an integrally formed wall, and a heating plate; Wherein, after the upper cover is connected to the bottom, there is a gap between the platform of the upper cover and the end surface of the second opening of the bottom for accommodating the middle-layer upper sealing member, and the gap is smaller than the height of the upper sealing member.

19. The liquid storage device according to claim 18, characterized in that: The bottom has at least one fixed portion for increasing the friction between the liquid storage container and the airflow generator. The fixed portion of the bottom can be a small protrusion made of the same or different materials.

20. The liquid storage device according to claim 18, characterized in that: The end surface of the first opening of the upper cover is in the same horizontal plane, the end surface of the second opening of the bottom is in the same horizontal plane, the horizontal planes of the first opening of the upper cover and the second opening of the bottom are overlapped or parallel, and the first opening and the second opening are in contact or non-contact.

21. The liquid storage device according to claim 18, characterized in that: The middle layer has a stopper with at least a portion of its periphery not smaller than the inner periphery of the second opening at the bottom, so as to prevent the middle layer from sinking.

22. The liquid storage device according to claim 18, characterized in that: The bottom also has a corresponding step configured to guide the liquid reservoir into the airflow generator.

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