Humidifying device for breathing machine

Abstract

The humidifying device for the breathing machine comprises a shell with a water storage cavity, the side wall of the shell is provided with an air inlet used for being communicated with a main machine of the breathing machine in a butt joint mode, and the top wall of the shell is provided with an air outlet. A matching surrounding wall protruding towards the interior of the water storage cavity is arranged at the air inlet, and the humidifying device further comprises an air inlet pipe which is detachably connected to the matching surrounding wall. According to the utility model, the air inlet pipe is detachably mounted on the matched enclosure bulkhead to realize butt joint and communication with the air inlet, a user can detach the air inlet pipe from the shell and then can independently clean the air inlet pipe, and after the air inlet pipe is detached, the joint of the air inlet pipe and the matched enclosure bulkhead is also exposed, so that the user can conveniently clean the joint; and therefore, the interior of the air inlet pipe and the connecting part of the air inlet pipe and the matched enclosure bulkhead can be thoroughly cleaned, cleanliness is guaranteed, and better experience is obtained during use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to a humidifying device for a breathing machine. BACKGROUND

[0002] The humidifying tank (water box) is one of important components of the breathing machine, contains a certain amount of water in the inside, and is communicated with the air outlet of the main machine of the breathing machine, the air in the humidifying tank after being pressurized by the air blower, obtains humidity through contact with water and the heating system of the heating device, and then enters the patient interface.

[0003] The humidifying tank is usually provided with an air inlet for butt joint communication with the air outlet of the main machine of the breathing machine, and meanwhile, the air inlet is also inserted with an air inlet pipe, which extends towards the inside of the humidifying tank to guide the airflow passing through the air inlet to contact with the humidifying liquid in the humidifying tank for humidification.

[0004] In the process of air inlet, the gas entering the inside of the breathing machine is not absolutely clean, but will have dust and other impurities, so when the airflow in the inside of the main machine enters the humidifying tank through the air inlet pipe, the dust will be attached to the inside of the air inlet pipe and the connecting part of the air inlet pipe and the humidifying tank. In addition, since the inside of the humidifying tank is a humid environment, bacteria are easy to breed in the inside of the air inlet pipe. As a result, the inside of the air inlet pipe is polluted and even produces odor, which seriously reduces the use experience of the user, and even brings health problems.

[0005] However, in the prior art, it is difficult to clean the air inlet pipe, so that the user cannot effectively clean the inside of the air inlet pipe. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of humidifying device for breathing machine to solve the problem of inconvenient cleaning of air inlet pipe in the inside of existing humidifying tank, and poor use experience.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] A kind of humidifying device for breathing machine, including the housing with water storage cavity, the side wall of housing is equipped with air inlet for butt joint communication with the main machine of breathing machine, the top wall of housing is equipped with air outlet;Air inlet is provided with the cooperation surrounding wall that protrudes towards the inside of water storage cavity, and the humidifying device further includes air inlet pipe, and air inlet pipe is detachably connected to cooperation surrounding wall.

[0009] One end of air inlet pipe is located in the inside of cooperation surrounding wall;Or, one end of air inlet pipe is sleeved on the outer periphery of cooperation surrounding wall.

[0010] Sealing element is arranged between air inlet pipe and cooperation surrounding wall, and air inlet pipe and / or cooperation surrounding wall are provided with containing groove, and sealing element is located in containing groove.

[0011] The air inlet pipe is provided with a first clamping protrusion, and the matching surrounding wall is provided with a first matching protrusion, the first clamping protrusion and the first matching protrusion are clamped and fixed.

[0012] One of the matching surrounding wall and the air inlet pipe is provided with a fixing groove, and the other is provided with a fixing protrusion matched with the fixing groove, the fixing groove is provided with a locking structure, the fixing protrusion is provided with a matching structure, and the air inlet pipe and the matching surrounding wall can rotate relative to each other to match and lock or unlock the locking structure and the matching structure.

[0013] The side of the fixing groove is further provided with a guide slide communicated with the fixing groove, and the guide slide extends spirally to the end of the matching surrounding wall or the air inlet pipe.

[0014] The matching surrounding wall has a first matching part and a first clamping part arranged opposite along the radial direction of the air inlet, and the air inlet pipe has a second matching part and a second clamping part arranged opposite along the radial direction, the first matching part and the second matching part are matched to enable the air inlet pipe to swing around the matching part, and the first clamping part and the second clamping part are clamped and fixed.

[0015] The side wall of the shell has a first end face, and the outer end face of the air inlet is flush with the first end face.

[0016] The matching surrounding wall comprises a first matching section and a second matching section, the inner diameter of the first matching section is greater than the inner diameter of the second matching section, and the first matching section is used for abutting with the air outlet of the breathing machine host to make the air outlet have the same inner diameter as the second matching section.

[0017] The shell comprises a tank body and an upper cover, the top wall of the tank body is provided with a water filling opening, the upper cover can cover the water filling opening, the air outlet is arranged on the upper cover, and the air outlet is inserted with an air outlet adapter pipe.

[0018] Due to the adoption of the above technical scheme, the beneficial effects achieved by the utility model are as follows:

[0019] 1. In the utility model, the air inlet pipe is detachably installed on the matching surrounding wall, realizes the butt joint communication with the air inlet, the user can detach the air inlet pipe from the shell, and then the air inlet pipe can be cleaned alone, and after the air inlet pipe is detached, the connection part of the air inlet pipe and the matching surrounding wall is also exposed, so that the user can conveniently clean the part, so that the air inlet pipe and the connection part of the air inlet pipe and the matching surrounding wall can be completely cleaned, the cleanliness is ensured, and better experience is obtained in use.

[0020] In addition, the matching surrounding wall is arranged at the air inlet, and the air inlet pipe is fixedly connected with the matching surrounding wall, on the one hand, the shapes of the matching surrounding wall and the air inlet pipe are both tubular structures, which are easier to design the connection structure and perform the connection operation, reduce the difficulty of assembly and disassembly, and improve the assembly and disassembly convenience. On the other hand, after the air inlet pipe and the matching surrounding wall are installed, the two can coincide in the axial direction in a certain area, so that the sealing performance of the connection part of the two is improved, and gas leakage is avoided.

[0021] 2. As a preferred embodiment of the utility model, a sealing element is arranged between the air inlet pipe and the matching surrounding wall, the air inlet pipe and / or the matching surrounding wall is provided with a containing groove, and the sealing element is located in the containing groove. The sealing element can abut against the air inlet pipe and the matching surrounding wall in the radial direction of the air inlet to seal the gap between the two, thereby ensuring the sealing of the connection. At the same time, the arrangement of the sealing element increases the frictional resistance between the air inlet pipe and the matching surrounding wall, which in turn helps to maintain the stability of the connection when the airflow passes through, thereby preventing the air inlet pipe from being loosened from the matching surrounding wall under the push of the airflow. Similarly, due to the increased frictional force between the two, the difficulty of installing the air inlet pipe and the matching surrounding wall is increased. By arranging the containing groove, at least part of the sealing element is contained in the containing groove, which can reduce the height of the sealing element protruding from the matching surrounding wall or the air inlet pipe, making it easier for the two to be installed in a sleeved manner. On the other hand, the containing groove can also limit the movement of the sealing element in the axial direction of the air inlet, thereby ensuring the stability of the position and the sealing effect.

[0022] 3. As a preferred embodiment of the utility model, the side wall of the shell has a first end face, and the outer end face of the air inlet is flush with the first end face. The outer end face of the air inlet does not protrude from the first end face of the shell, which can make the humidification device as a whole more flat, facilitating compact layout in the main machine of the breathing machine and reducing the size of the equipment. On the other hand, the embedded design makes the outer surface of the shell smooth, facilitating cleaning and preventing water stains and dust from accumulating. Moreover, when the airflow flows from the main machine to the humidification device, the airway path is smoother, avoiding vortex or pressure fluctuation of the airflow due to protruding structures, and improving the humidification efficiency.

[0023] 4. As a preferred embodiment of the utility model, the matching surrounding wall comprises a first matching section and a second matching section, the inner diameter of the first matching section is larger than that of the second matching section, and the first matching section is used to butt joint with the air outlet of the breathing machine main machine, so that the air outlet has the same inner diameter as the second matching section. The first matching section has a larger inner diameter, so that it can be sleeved outside the air outlet of the main machine to form a plug-in connection, making the butt joint of the two more stable. At the same time, the large-diameter first matching section also facilitates positioning with the air outlet, reducing the probability of misalignment due to positioning deviation. When the air outlet is inserted into the first matching section, the inner diameter of the air outlet is the same as that of the second matching section, so that the airflow flowing out of the air outlet can directly pass through the second matching section into the air inlet pipe, and the inner diameter of the flow channel along the way remains unchanged, so that the airflow will not diffuse and converge to a large extent when passing through, thereby maintaining a high flow efficiency and improving the efficiency of the airflow entering the humidification device.

[0024] 5. As a preferred embodiment of the utility model, the shell comprises a tank body and an upper cover, the top wall of the tank body is provided with a water filling opening, the upper cover can cover the water filling opening, the air outlet is arranged on the upper cover, and the air outlet is connected with an air outlet adapter pipe. The air outlet is arranged on the upper cover of the humidifying device, and the air outlet adapter pipe is connected with the upper cover, so that the air outlet adapter pipe can be detached from the tank body together with the upper cover, and then the upper cover and the air outlet adapter pipe can be directly cleaned, and the user does not need to additionally detach the air outlet adapter pipe, so that the number of times of detaching the air outlet adapter pipe can be reduced, and the connection stability and the sealing performance of the air outlet adapter pipe and the air outlet can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings described herein are used to provide further understanding of the utility model, constitute a part of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0026] Figure 1 It is a structure schematic view of the humidifying device under an embodiment of the utility model;

[0027] Figure 2 It is a sectional view of the humidifying device under an embodiment of the utility model;

[0028] Figure 3 It is Figure 2 the enlarged view of area A in figure 1;

[0029] Figure 4 It is a structure schematic view of the tank body under another embodiment of the utility model;

[0030] Figure 5 It is Figure 4 the enlarged view of area B in figure 2;

[0031] Figure 6 It is a structure schematic view of the tank body under an embodiment of the utility model, wherein the air inlet pipe is not installed;

[0032] Figure 7 It is Figure 6 the enlarged view of area C in figure 3;

[0033] Figure 8 It is a structure schematic view of the air inlet pipe under an embodiment of the utility model;

[0034] Figure 9 It is a structure schematic view of the tank body under another embodiment of the utility model;

[0035] Figure 10 It is Figure 9 the sectional view of the tank body, wherein the air inlet pipe is in an uninstalled state.

[0036] Wherein:

[0037] 1 housing; 11 air inlet; 12 first end face; 13 fitting surrounding wall; 131 first fitting section; 132 second fitting section; 133 first fitting convex rib; 134 fixing groove; 1341 locking structure; 1342 guide slide; 135 first fitting part; 136 first clamping part;

[0038] 2 tank body; 21 water inlet;

[0039] 3 upper cover; 31 air outlet;

[0040] 4 air outlet adapter pipe;

[0041] 5 air inlet pipe; 51 limiting rib; 52 accommodating groove; 53 first clamping convex rib; 54 fixing convex rib; 541 fitting structure; 55 second fitting part; 56 second clamping part;

[0042] 6 sealing element. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0044] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0045] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0046] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the present application, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature can be the first and second features directly contact, or the first and second features indirectly contact through an intermediate medium. In the description of the present application, the description of the terms "embodiment", "example", "an embodiment", "illustration" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] As shown in Figure 2 , Figure 4 , Figure 9 A humidifying device for a breathing machine, comprising a shell 1 with a water storage cavity, a side wall of the shell 1 is provided with an air inlet 11 for communicating with the main machine of the breathing machine, and the top wall of the shell 1 is provided with an air outlet 31; The air inlet 11 is provided with a matching surrounding wall 13 protruding towards the inside of the water storage cavity, and the humidifying device further comprises an air inlet pipe 5 which is detachably connected to the matching surrounding wall 13.

[0049] In the present application, the air outlet 31 is arranged on the top wall of the shell 1, so that the air inlet 11 and the air outlet 31 are distributed on two different sides of the shell 1, so that after the side where the air inlet 11 is located is docked with the main machine, the air outlet 31 will not be blocked by the main machine, thereby more conveniently connecting the air outlet 31 directly with the pipeline of the user end. And when the humidified gas in the humidifying device is discharged from the air outlet 31, it does not need to pass through the main machine again, but can be directly connected with the pipeline of the user end and directly used by the user.

[0050] The air inlet pipe 5 is detachably mounted on the matching surrounding wall 13 to realize the docking communication with the air inlet 11, and the user can detach the air inlet pipe 5 from the shell 1, so that the air inlet pipe 5 can be cleaned separately, and after the air inlet pipe 5 is detached, the connection between the air inlet pipe 5 and the matching surrounding wall 13 is also exposed, so that the user can conveniently clean this place, thereby thoroughly cleaning the inside of the air inlet pipe 5 and the connection part of the air inlet pipe 5 and the matching surrounding wall 13, ensuring cleanliness, and thereby obtaining better experience in use.

[0051] In addition, the air inlet 11 is provided with the matching surrounding wall 13, and the air inlet pipe 5 is fixedly connected with the matching surrounding wall 13, on the one hand, the shape of the matching surrounding wall 13 and the air inlet pipe 5 are both tubular structures, which are easier to design the connection structure and perform the connection operation, reduce the difficulty of assembly and disassembly, and improve the convenience of assembly and disassembly. On the other hand, after the air inlet pipe 5 and the matching surrounding wall 13 are installed, the two can partially overlap in the axial direction, thereby improving the sealing performance of the connection part of the two, and avoiding gas leakage.

[0052] Preferably, such as Figure 2 As shown, the air inlet pipe 5 bends or extends downwards at an angle. Airflow from the fan inside the main unit enters the humidification device through the air inlet 11, is guided by the downward-extending air inlet pipe 5, and comes into contact with the water inside the humidification device to complete humidification. The air is then discharged from the upper air outlet 31. The downward-extending air inlet pipe 5 allows the gas to flow towards the liquid surface, ensuring complete contact between the gas and water, improving the humidification effect. It also prevents water from flowing into the main unit through the air inlet pipe 5 when the humidification device is slightly tilted.

[0053] It should be noted that the present invention does not limit the structure of the cooperating enclosure 13. In one embodiment, the cooperating enclosure 13 is a complete annular structure surrounding the air outlet 31. In another embodiment, the cooperating enclosure 13 is a series of discontinuous segments, spaced apart circumferentially along the air outlet 31.

[0054] Furthermore, this utility model does not limit the docking method of the cooperating enclosure 13 and the air intake pipe 5. Preferably, one end of the cooperating enclosure 13 and the air intake pipe 5 are inserted into each other so that the two have at least a partial overlap in the axial direction of the air intake 11, thereby improving the sealing of the connection between the two.

[0055] Among them, such as Figure 2 , Figure 3 As shown, during assembly, one end of the intake pipe 5 can be fitted onto the outer periphery of the mating enclosure 13, allowing the mating enclosure 13 to extend into the interior of the intake pipe 5. The intake pipe 5 can be made of a flexible material to provide good elastic deformation capability, making it easier to fit onto the mating enclosure 13 and facilitating assembly. Furthermore, the elastic force of the intake pipe 5 itself will tighten the mating enclosure 13, thereby improving assembly stability and sealing. In another embodiment, the intake pipe 5 can also be extended into the mating enclosure 13, with one end of the intake pipe 5 located inside the mating enclosure 13. In this embodiment, after the intake pipe 5 extends into the mating enclosure 13, it can also generate an outward expanding force under its own elasticity, thus forming an abutment with the inner wall of the mating enclosure 13.

[0056] Preferably, such as Figure 3 As shown, a sealing element 6 is provided between the air intake pipe 5 and the mating enclosure 13, and the air intake pipe 5 and / or the mating enclosure 13 are provided with a receiving groove 52, with the sealing element 6 located in the receiving groove 52.

[0057] The sealing member 6 can abut with the air inlet pipe 5 and the matching surrounding wall 13 in the radial direction of the air inlet 11 respectively, so as to seal the gap between the two and ensure the sealing of the connection. Meanwhile, the setting of the sealing member 6 increases the friction resistance between the air inlet pipe 5 and the matching surrounding wall 13, which further helps to maintain the stability of the connection when the airflow passes through, avoiding the air inlet pipe 5 from being loosened with the matching surrounding wall 13 under the pushing of the airflow. Similarly, due to the increased friction between the two, the difficulty of installing the air inlet pipe 5 and the matching surrounding wall 13 is increased. By setting the accommodating groove 52, at least part of the sealing member 6 is accommodated in the accommodating groove 52, which can reduce the height of the sealing member 6 protruding from the matching surrounding wall 13 or the air inlet pipe 5, so that the two can be more easily installed in a sleeved manner. On the other hand, the accommodating groove 52 can also limit the sealing member 6, preventing the sealing member 6 from moving in the axial direction of the air inlet 11, ensuring the stability of the position and further ensuring the sealing effect.

[0058] Preferably, the sealing member 6 is a sealing ring made of flexible material.

[0059] It should be noted that the connection mode of the air inlet pipe 5 and the matching surrounding wall 13 is not limited in the utility model, which includes but is not limited to the following implementation modes:

[0060] Implementation mode one: in the implementation mode, as shown in Figure 2 , Figure 3 , the air inlet pipe 5 is provided with a first clamping protruding rib 53, and the matching surrounding wall 13 is provided with a first matching protruding rib 133, and the first clamping protruding rib 53 is clamped and fixed with the first matching protruding rib 133.

[0061] As shown in Figure 2 , Figure 3 , in an embodiment, the air inlet pipe 5 is inserted into the matching surrounding wall 13 from the inside of the shell 1, so that the first clamping protruding rib 53 at the end of the air inlet pipe 5 passes over the first matching protruding rib 133 to complete the clamping.

[0062] Specifically, the first matching protruding rib 133 is in an annular structure to surround the air inlet 11. Preferably, as shown in Figure 3 , Figure 2 , the opposite side of the first clamping protruding rib 53 and the first matching protruding rib 133 is provided with a guide inclined surface or arc surface, so as to make the first clamping protruding rib 53 smoothly slide over the first matching protruding rib 133 when the user inserts.

[0063] In another embodiment, the first matching protruding rib 133 is a plurality of and is arranged at intervals along the circumference of the air inlet 11. On the basis of ensuring the stable cooperation with the first clamping protruding rib 53, the use of the first matching protruding rib 133 can be reduced to save costs.

[0064] Preferably, as shown in Figure 3As shown, the first clamping protrusions 53 can protrude radially outwardly from the air inlet pipe 5, wherein the first clamping protrusions 53 can surround the air inlet pipe 5 to form clamping with the first matching protrusions 133 in a circumferential circle. The first clamping protrusions 53 can also be arranged in multiple segments at intervals in the circumferential direction. When the first matching protrusions 133 are discontinuous multiple segments, an opening is formed between adjacent two segments of the first matching protrusions 133 for the first clamping protrusions 53 to pass through. In assembly, the first clamping protrusions 53 can be aligned with the opening to pass through the first matching protrusions 133, and then the air inlet pipe 5 is rotated to misalign the first clamping protrusions 53 and the first matching protrusions 133, so as to realize clamping.

[0065] As shown in Figure 4 to Figure 8 , Figure 7 , the outer periphery of the air inlet pipe 5 is further provided with a limiting stop protrusion 51, which can stop cooperation with one end of the matching surrounding wall 13 to further limit the axial movement of the air inlet pipe 5 relative to the matching surrounding wall 13.

[0066] The air inlet pipe 5 is preferably made of flexible material, and can also be a hard structure. Of course, the air inlet pipe 5 can also be connected with the matching surrounding wall 13 in other ways, such as threaded connection, interference fit plug-in and the like, which are not limited herein.

[0067] Embodiment two: in this embodiment, as shown in Figure 8 , one of the matching surrounding wall 13 and the air inlet pipe 5 is provided with a fixing groove 134, and the other is provided with a fixing protrusion 54 matched with the fixing groove 134, the fixing groove 134 is provided with a locking structure 1341, and the fixing protrusion 54 is provided with a matching structure 541, the air inlet pipe 5 and the matching surrounding wall 13 can rotate relative to each other to make the locking structure 1341 and the matching structure 541 cooperate to lock or unlock.

[0068] After the fixing protrusion 54 and the fixing groove 134 cooperate, the air inlet pipe 5 can rotate relative to the matching surrounding wall 13, so that the fixing protrusion 54 rotates in the fixing groove 134. When the relative rotation of the two is to the cooperation of the locking structure 1341 and the matching structure 541, the air inlet pipe 5 and the matching surrounding wall 13 complete the locking, and when the relative rotation of the two is to the cooperation of the locking structure 1341 and the matching structure 541, the air inlet pipe 5 and the matching surrounding wall 13 are unlocked, and the air inlet pipe 5 can be removed.

[0069] As shown in Figure 7 , Figure 8 , the fixing groove 134 is arranged on the matching surrounding wall 13, and the fixing protrusion 54 is arranged on the air inlet pipe 5. Of course, the positions of the two can also be interchanged.

[0070] Specifically, as shown in Figure 6 , Figure 7As shown, the locking structure 1341 includes a locking protrusion arranged in the fixing groove 134, and the cooperating structure 541 includes a locking groove arranged in the fixing protrusion 54, and the locking is achieved when the locking protrusion is located in the locking groove, and the unlocking is achieved when the locking protrusion is out of the locking groove. Of course, the locking structure 1341 can also be arranged as a groove structure, and the cooperating structure 541 is arranged as a protrusion structure, which is not limited here. Alternatively, the locking structure 1341 and the cooperating structure 541 can both be arranged as protrusion structures, and when the protrusion structure on the fixing protrusion 54 is located on one side of the protrusion structure in the fixing groove 134, the two are in the locking state, and when the protrusion structure on the fixing protrusion 54 is located on the other side of the protrusion structure in the fixing groove 134, the two are in the unlocking state.

[0071] Further, as shown in Figure 8 、 Figure 9 , one side of the fixing groove 134 is also provided with a guide slide 1342 in communication with the fixing groove 134, and the guide slide 1342 extends to the end of the cooperating surrounding wall 13 or the air inlet pipe 5 in a spiral shape.

[0072] The guide slide 1342 can guide the installation of the air inlet pipe 5, and the fixing protrusion 54 is first placed in the guide slide 1342, and then the air inlet pipe 5 is rotated to move the fixing protrusion 54 along the guide slide 1342 to the fixing groove 134, until the air inlet pipe 5 and the cooperating surrounding wall 13 are locked. When disassembling the air inlet pipe 5, the air inlet pipe 5 is reversed to rotate.

[0073] Preferably, as shown in Figure 10 , the fixing protrusion 54 is provided with a guide inclined surface at both ends. The fixing protrusion 54 and the fixing groove 134 are both arranged on both sides of the air inlet 11 in a radial direction, so that the air inlet pipe 5 is fixed on both sides with the cooperating surrounding wall 13 at the same time, improving the fixing effect.

[0074] Embodiment three: in this embodiment, as shown in Figure 10 、 Figure 9 , the cooperating surrounding wall 13 has a first cooperating part 135 and a first clamping part 136 arranged in a radial direction opposite to each other, and the air inlet pipe 5 has a second cooperating part 55 and a second clamping part 56 arranged in a radial direction opposite to each other, the first cooperating part 135 and the second cooperating part 55 cooperate to enable the air inlet pipe 5 to swing around the cooperating part, and the first clamping part 136 and the second clamping part 56 are clamped and fixed.

[0075] In this embodiment, as shown in Figure 10 , when the air inlet pipe 5 is installed, the first cooperating part 135 and the second cooperating part 55 are first cooperated to form a simple fixing on one side of the end of the air inlet pipe 5, and the air inlet pipe 5 can swing around the plug-in part at this time, and then the first clamping part 136 and the second clamping part 56 on the other side are clamped and fixed to realize the fixed connection of the air inlet pipe 5 and the cooperating surrounding wall 13.

[0076] Specifically, as shown in Figure 1 、 Figure 2 , the first matching part 135 can be a protruding structure, the second matching part 55 includes a plug-in interface for plug-in matching with the protruding structure, and the first clamping part 136 and / or the second clamping part 56 are provided with a clamping hook.

[0077] Of course, in addition to the above three embodiments, the air inlet pipe 5 can also be connected with the matching surrounding wall 13 in other ways, such as threaded connection, etc., which are not limited here.

[0078] Preferably, as shown in Figure 10 , the side wall of the shell 1 has a first end face 12, and the outer end face of the air inlet 11 is flush with the first end face 12.

[0079] The outer end face of the air inlet 11 is not protruding from the first end face 12 of the shell 1, which can design the humidification device to be more flat, facilitate compact layout in the breathing machine host, and reduce the equipment volume. On the other hand, the embedded design makes the outer surface of the shell 1 smooth, facilitating cleaning, and avoiding accumulation of water stains and dust. Moreover, when the airflow flows from the host to the humidification device, the airway path is smoother, avoiding vortex or pressure fluctuation of the airflow due to the protruding structure, and improving the humidification efficiency.

[0080] In addition, the hidden interface can improve the overall aesthetics of the humidification device, which meets the design trend of modern medical equipment.

[0081] In a preferred embodiment, as shown in Figure 1 、 Figure 4 , the matching surrounding wall 13 includes a first matching section 131 and a second matching section 132, the inner diameter of the first matching section 131 is larger than that of the second matching section 132, and the first matching section 131 is used to butt joint with the air outlet of the breathing machine host, so that the air outlet has the same inner diameter as the second matching section 132.

[0082] The inner diameter of the first matching section 131 is larger, so it can be set outside the air outlet of the host, forming a plug-in matching, making the butt joint more stable. At the same time, the large-diameter first matching section 131 also facilitates positioning with the air outlet, reducing the probability of misalignment due to positioning deviation. When the air outlet is inserted into the first matching section 131, the inner diameter of the air outlet is the same as that of the second matching section 132, so that the airflow out of the air outlet can directly enter the second matching section 132 into the air inlet pipe 5, and the inner diameter of the flow channel along the way remains unchanged, so that the airflow will not be diffused and converged to a large extent when passing through, thereby maintaining a high flow efficiency, and further improving the efficiency of the airflow into the humidification device.

[0083] Preferably, there is a stepped surface or an inclined surface between the first mating section 131 and the second mating section 132 to form a stop with the air outlet and limit its installation.

[0084] As a preferred embodiment, such as ​ , ​ As shown, the outer shell 1 includes a tank body 2 and a top cover 3. The top wall of the tank body 2 is provided with a water inlet 21. The top cover 3 can cover the water inlet 21. An air outlet 31 is opened on the top cover 3. An air outlet adapter 4 is inserted into the air outlet 31.

[0085] The air outlet 31 is located on the upper cover 3 of the humidification device. The air outlet adapter 4 is inserted into the upper cover 3, so that the air outlet adapter 4 can be removed from the tank 2 along with the upper cover 3. This allows the upper cover 3 and the air outlet adapter 4 to be cleaned directly without the user having to remove the air outlet adapter 4 separately. This reduces the number of times the air outlet adapter 4 can be installed and removed, ensuring the stability and sealing of its connection with the air outlet 31.

[0086] The exhaust pipe 4 can be connected to the top cover 3 in the same way as the intake pipe 5, or it can be connected to the top cover 3 in a different way than the intake pipe 5. No limitation is made here.

[0087] Preferably, the air outlet adapter 4 has a curved structure. After being connected to the upper cover 3, it can rotate relative to the upper cover 3, thereby adjusting the orientation of the outlet end of the air outlet adapter 4 and making it easier to connect to the user's pipeline.

[0088] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0089] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0090] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A humidifying device for a breathing machine, comprising a housing having a water storage cavity, a side wall of the housing being provided with an air inlet for communicating with a main machine of the breathing machine, characterized in that, a top wall of the housing is provided with an air outlet; a matching surrounding wall is provided at the air inlet and protrudes towards the inside of the water storage cavity; and the humidifying device further comprises an air inlet pipe which is detachably connected to the matching surrounding wall.

2. The humidifying device for a breathing machine according to claim 1, characterized in that, one end of the air inlet pipe is located inside the matching surrounding wall; or one end of the air inlet pipe is sleeved on the outer periphery of the matching surrounding wall.

3. The humidifying device for a breathing machine according to claim 2, characterized in that, a sealing member is arranged between the air inlet pipe and the matching surrounding wall, and the air inlet pipe and / or the matching surrounding wall is provided with a receiving groove in which the sealing member is located.

4. The humidifying device for a breathing machine according to claim 1, characterized in that, the air inlet pipe is provided with a first clamping protrusion, the matching surrounding wall is provided with a first matching protrusion, and the first clamping protrusion is clamped and fixed with the first matching protrusion.

5. The humidifying device for a breathing machine according to claim 1, characterized in that, one of the matching surrounding wall and the air inlet pipe is provided with a fixing groove, the other is provided with a fixing protrusion matched with the fixing groove, the fixing groove is provided with a locking structure, and the fixing protrusion is provided with a matching structure, the air inlet pipe and the matching surrounding wall can be relatively rotated to make the locking structure and the matching structure matched and locked or unlocked.

6. The humidifying device for a breathing machine according to claim 5, characterized in that, one side of the fixing groove is further provided with a guide slide communicated with the fixing groove, and the guide slide extends in a spiral shape to the end of the matching surrounding wall or the air inlet pipe.

7. The humidifying device for a breathing machine according to claim 1, characterized in that, the matching surrounding wall has a first matching part and a first clamping part which are oppositely arranged along the radial direction of the air inlet, and the air inlet pipe has a second matching part and a second clamping part which are oppositely arranged along the radial direction, the first matching part and the second matching part are matched to make the air inlet pipe swing around the matching part, and the first clamping part and the second clamping part are clamped and fixed.

8. The humidifying device for a breathing machine according to claim 1, characterized in that, the side wall of the housing has a first end face, and the outer end face of the air inlet is flush with the first end face.

9. The humidifying device for a breathing machine according to claim 1, characterized in that, the matching surrounding wall comprises a first matching section and a second matching section, the inner diameter of the first matching section is larger than that of the second matching section, and the first matching section is used to be connected with the air outlet of the main machine of the breathing machine so that the air outlet has the same inner diameter as the second matching section.

10. The humidifying device for a breathing machine according to claim 1, characterized in that, the housing comprises a tank body and an upper cover, the top wall of the tank body is provided with a water filling port, the upper cover can cover the water filling port, the air outlet is arranged on the upper cover, and an air outlet adapter pipe is inserted into the air outlet. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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