An air intake assembly for a respiratory treatment device and a respiratory treatment device

Abstract

The utility model discloses a kind of air intake assembly and respiratory therapy equipment for respiratory therapy equipment, air intake assembly includes shell, gas passage is formed in shell interior, shell is provided with the inlet and outlet being communicated with gas passage, drainage rib is arranged in gas passage, drainage rib is extended in spiral shape to be enclosed in gas passage along spiral path extending airflow channel, airflow channel gradually extends to outlet from inlet outward. Airflow channel extended in spiral is the structure of layer after layer encircles, not only effectively lengthen the length of airflow channel in limited space, more adapt to miniaturization's respiratory therapy equipment. Moreover, the turning of spiral airflow channel is more smooth and soft, and the process of airflow flow will be more smooth and gently complete turning, reduce the noise emitted by airflow collision. In the radial direction of airflow channel, at least part of airflow channel is overlapped, so that the sound wave of noise can be reflected in airflow channel, and then mutually offset, further improve the effect of noise reduction.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically relating to an air intake component for a respiratory therapy device and a respiratory therapy device. Background Technology

[0002] With the development of technology and the improvement of living standards, the use of respiratory therapy equipment has been promoted. It is often used to assist patients with breathing difficulties or who are unable to breathe independently to complete the breathing process. The respiratory therapy equipment is equipped with a fan. When the fan is working, outside air is continuously drawn into the respiratory therapy equipment, pressurized by the fan, and then flowed out to the user for use.

[0003] However, airflow carries significant kinetic energy within respiratory therapy equipment, especially in its path before reaching the fan. Under the fan's suction, the airflow moves rapidly towards the fan, producing a loud whistling sound. Furthermore, the collision of multiple high-speed airflows within the airway not only easily creates turbulence and reduces intake efficiency but also generates considerable noise. Consequently, respiratory therapy equipment often operates with significant noise, impacting the user experience.

[0004] To address this, a common approach is to lengthen the airflow path between the air inlet and the fan, reducing the kinetic energy of the airflow and thus achieving a certain degree of noise reduction. However, with the increasing popularity of respiratory therapy equipment and the growing demand for its use, these devices are gradually becoming smaller, and this reduction in size inevitably limits the design of the airflow path length. Therefore, some existing respiratory therapy devices design the airflow path as multiple interconnected and parallel segments, such as S-shaped or M-shaped airflow paths, to save space.

[0005] However, when the airflow moves from one section of the air passage to a parallel or nearly parallel section, it will undergo a significant turn (e.g., a 180° turn). This causes the high-speed airflow to collide violently with the inner wall of the air passage, which not only generates collision noise, but also causes an uncontrollable change in the direction of airflow, resulting in turbulence within the air passage. This further exacerbates the noise generation and affects the flow efficiency, leading to a decrease in intake efficiency. Utility Model Content

[0006] This invention provides an air intake component for a respiratory therapy device and a respiratory therapy device, in order to solve the problems that miniaturized respiratory therapy devices are difficult to effectively lengthen the airway, have poor noise reduction effects, and affect the flow efficiency of airflow.

[0007] The technical solution adopted in this utility model is as follows:

[0008] An air intake assembly for a respiratory therapy device includes a housing, an air passage chamber formed inside the housing, an inlet and an outlet communicating with the air passage chamber, and a drainage rib provided inside the air passage chamber. The drainage rib extends in a spiral shape to form an airflow channel extending along a spiral path inside the air passage chamber, and the airflow channel gradually extends outward from the inlet to the outlet.

[0009] The inlet and outlet are disposed on opposite end faces of the housing along the first direction, so that the directions of the inlet and outlet are perpendicular to the first direction respectively. The guide rib extends in a plane perpendicular to the first direction, so that the extension direction of the airflow channel is perpendicular to the first direction.

[0010] The air intake assembly also includes two buffers, which are spaced apart inside the air passage along the first direction, and the airflow channel is located between the two buffers.

[0011] The air intake assembly also includes a flow divider located within the airflow channel. The flow divider has flow divider ribs extending spirally from the inlet to the outlet to divide the airflow channel into parallel first spiral sections and second spiral sections.

[0012] The diverter also includes a flow guide section, which is provided corresponding to the inlet, and the flow guide section has a flow guide slope on the side facing the inlet.

[0013] The diversion ribs extend into the inlet to position and fit with the edge of the inlet, dividing the inlet into a first air inlet and a second air inlet. The first air inlet is connected to the first spiral section, and the second air inlet is connected to the second spiral section.

[0014] The two ends of the flow divider are equipped with fixing structures, and the air passage cavity is also equipped with mating ribs. The mating ribs and the drainage ribs are respectively equipped with mating structures. The fixing structures and the mating structures are matched so that one end of the flow divider is fixed to the drainage rib and the other end is fixed to the mating rib.

[0015] A silencing element is provided in the first spiral section and / or the second spiral section, and the silencing element cooperates with the flow divider to form at least part of the first spiral section and / or the second spiral section.

[0016] The air passage is also equipped with two buffer components. The airflow channel is located between the two buffer components. The silencer is integrally formed with one of the buffer components and abuts against the other buffer component.

[0017] The housing includes a first body and a second body. The thickness of the first body is greater than the thickness of the second body. The inlet is located in the first body and the outlet is located in the second body. The airflow channel extends from the first body to the second body, and the volume of the airflow channel in the first body is greater than the volume in the second body.

[0018] The first body has a buffer inside, and the difference in thickness between the first body and the second body is the same as the thickness of the buffer.

[0019] This utility model also discloses a respiratory therapy device, including a shell and a fan assembly disposed inside the shell. The shell has an air inlet and an air outlet, and the fan assembly has an air inlet and an air outlet. It also includes the aforementioned air inlet assembly, which is located and fixedly connected to the inside of the shell. The inlet is connected to the air inlet, and the outlet is connected to the air inlet, so that the air inlet is connected to the air inlet through an airflow channel.

[0020] The outer shell has an inner mounting shell inside, and the fan assembly is located inside the inner mounting shell. The side of the outer shell facing the inner mounting shell is open, so that the outer shell and the inner mounting shell can cooperate to form an airflow channel.

[0021] The outer casing has an air inlet channel, and the outlet is connected to the air inlet through the air inlet channel. The air inlet channel includes an extension section and a guide section. The extension section extends in a direction perpendicular to the extension plane of the airflow channel, and the guide section has an angle with the extension section. The guide section is connected to the air inlet.

[0022] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0023] 1. In this invention, a spiral airflow channel is formed within the air passage cavity by means of a guide rib. The inlet is located in the inner circle of the airflow channel, and the outlet is located in the outer circle. After the airflow enters the airflow channel from the inlet, it gradually spirals outwards and finally flows out of the air passage cavity through the outlet, flowing towards the fan. The spirally extending airflow channel has a layered, encircling structure, which not only effectively lengthens the airflow channel within a limited space, but also makes it more suitable for miniaturized respiratory therapy equipment. Moreover, the spiral airflow channel has a smoother and gentler turning, without corners, so the airflow can complete the turning more smoothly and gently during the flow. Therefore, the contact between the airflow and the inner wall of the airflow channel is also gentler, without violent collisions, reducing the noise generated by airflow collisions. At the same time, the rotating airflow can effectively avoid the formation of turbulence, making the airflow flow more efficient. In addition, at least part of the airflow channel overlaps in the radial direction, so that the sound waves of noise can be reflected within the airflow channel and cancel each other out, making it more difficult for the sound waves to propagate, further improving the noise reduction effect.

[0024] Furthermore, the air inlet assembly of this invention incorporates airflow channels within the housing via guide ribs, enabling mass production as a standalone module. This module can be easily assembled into respiratory therapy equipment, making it suitable for various models and sizes, thus improving versatility. During maintenance and replacement, the air inlet assembly and its internal airflow channels can be replaced individually without disassembling other components of the respiratory therapy equipment, ensuring stable airflow connections and a tight seal.

[0025] 2. In a preferred embodiment of this utility model, the inlet and outlet are disposed on opposite end faces of the housing along a first direction, such that the directions of the inlet and outlet are perpendicular to the first direction. The guide ribs extend in a plane perpendicular to the first direction, so that the extension direction of the airflow channel is perpendicular to the first direction. The airflow channel extends in a direction perpendicular to the inlet and outlet axes. On the one hand, this causes the airflow to undergo a 90-degree turn when entering the airflow channel from the inlet and when exiting the airflow channel through the outlet, further lengthening the airflow path and reducing the kinetic energy of the airflow through the turn, thereby improving the noise reduction effect. On the other hand, the extension of the airflow channel does not occupy space along the inlet and outlet axes. This arrangement further helps to reduce the overall volume of the air intake assembly, achieving module miniaturization, and facilitates the docking and connection of the inlet and outlet with other components of the respiratory therapy device, making it easier to install the air intake assembly into the respiratory therapy device.

[0026] 3. In a preferred embodiment of this utility model, the air inlet assembly further includes a flow divider located within the airflow channel. The flow divider has a flow divider rib extending spirally from the inlet to the outlet, dividing the airflow channel into two parallel spiral sections. The flow divider rib divides the airflow channel into two parallel spiral sections, causing the airflow to split into two streams after entering the airflow channel. One stream flows spirally within the first spiral section, and the other flows spirally within the second spiral section. Thus, while maintaining a constant total flow rate, the flow divider reduces the flow rate of each airflow, thereby reducing the whistling noise generated by a large flow of air. Furthermore, the airflow in the first and second spiral sections mixes before exiting the outlet. During mixing, the sound waves cancel each other out, further improving the noise reduction effect.

[0027] 4. In a preferred embodiment of this utility model, a silencing component is provided within the first spiral section and / or the second spiral section. The silencing component, in conjunction with the flow-dividing rib, forms at least a portion of the first spiral section and / or the second spiral section. The silencing component, in conjunction with the flow-dividing rib, forms at least a portion of the first spiral section and / or the second spiral section. This means that at least a portion of the spiral section is formed by filling the airflow channel with the silencing component. This prevents the width and extension direction of the first and second spiral sections from being excessively restricted by the shell shape. Two spiral sections can be constructed by partially filling with the silencing component, thereby making the widths of the first and second spiral sections closer and the airflow within the two spiral sections more uniform. Simultaneously, the silencing component itself is a flexible structure with a certain sound-absorbing effect, absorbing some noise and thus improving the noise reduction effect. Furthermore, because the silencing component is easy to process, it is also easy to process curved surfaces, inclined surfaces, and other structures on its surface, improving the guiding effect of airflow within the first and second spiral sections.

[0028] 5. This utility model also discloses a respiratory therapy device, including a housing and a fan assembly disposed inside the housing. The housing has an air inlet and an air outlet, and the fan assembly has an air inlet and an air outlet. It also includes the aforementioned air inlet assembly. An air inlet channel is disposed inside the housing, and the outlet is connected to the air inlet through the air inlet channel. The air inlet channel includes an extension section and a guide section. The extension section extends in a direction perpendicular to the extension plane of the airflow channel, and the guide section forms an angle with the extension section. The guide section is connected to the air inlet. The axis of the extension section of the air inlet channel coincides with the axis of the outlet, allowing the airflow in the airflow channel to flow smoothly through the outlet to the extension section. Since the suction force on the airflow is stronger closer to the fan assembly, the smoothly extended airflow path can reduce the probability of airflow colliding with the inner wall of the air inlet channel while ensuring smooth and efficient airflow, thus avoiding noise generation and problems such as poor airflow. The angle between the extension section and the guide section not only guides the airflow to change direction again, thus extending the air path and reducing noise, but also helps to arrange the extension section and the guide section on different sides of the fan assembly. This allows the air intake channel to surround or enclose multiple sides of the fan assembly, making the layout of the air intake channel and the fan assembly more compact and reasonable, saving internal space of the respiratory therapy equipment, and helping to achieve the miniaturization design of the respiratory therapy equipment. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the air intake assembly according to one embodiment of the present invention;

[0031] Figure 2 This is an exploded view of the air intake assembly according to one embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the shell according to one embodiment of the present invention;

[0033] Figure 4 for Figure 3 A schematic diagram of the internal structure of the middle shell from another perspective;

[0034] Figure 5 This is a schematic diagram of the flow divider in one embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the shell structure according to one embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of a respiratory therapy device according to one embodiment of the present invention;

[0037] Figure 8 for Figure 7 A structural schematic diagram of a respiratory therapy device from another perspective;

[0038] Figure 9 This is a schematic diagram of the internal structure of a respiratory therapy device according to one embodiment of the present invention;

[0039] Figure 10 This is an exploded view of a portion of the respiratory therapy device according to one embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of the first side cover according to one embodiment of the present invention;

[0041] Figure 12 This is a schematic diagram of the internal structure of the mounting inner shell according to one embodiment of the present invention;

[0042] Figure 13 This is a cross-sectional view of a respiratory therapy device according to one embodiment of the present invention;

[0043] Figure 14 This is a cross-sectional view of the respiratory therapy device of this utility model from another perspective.

[0044] in:

[0045] 1. Shell; 11. Inlet; 111. First air inlet; 112. Second air inlet; 12. Outlet; 13. First body; 14. Second body; 15. Drainage rib; 151. Fitting structure; 16. Airflow channel; 161. First spiral section; 162. Second spiral section; 17. Fitting rib;

[0046] 2. Flow divider; 21. Flow guide; 211. Flow guide slope; 22. Flow divider rib; 23. Fixing structure;

[0047] 3. Buffer components; 31. Silencing components;

[0048] 4. Outer shell; 41. Exhaust pipe; 42. Inlet duct; 421. Extension section; 422. Guide section; 423. First grille; 424. Noise reduction components;

[0049] 5 First side cover; 51 Air intake grille; 52 Air intake; 53 Filter element;

[0050] 6. Second side cover; 61. Air outlet;

[0051] 7. Install the inner casing;

[0052] 8. Fan assembly; 81. Air inlet. Detailed Implementation

[0053] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0054] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0055] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] like Figures 1 to 14As shown, an air intake assembly for a respiratory therapy device includes a housing 1, an air passage chamber is formed inside the housing 1, the housing 1 is provided with an inlet 11 and an outlet 12 communicating with the air passage chamber, a drainage rib 15 is provided inside the air passage chamber, the drainage rib 15 extends in a spiral shape to form an airflow channel 16 extending along a spiral path inside the air passage chamber, the airflow channel 16 gradually extends outward from the inlet 11 to the outlet 12.

[0059] In this invention, a spiral airflow channel 16 is formed within the air passage chamber by means of a guide rib 15. The inlet 11 is located in the inner circle of the airflow channel 16, and the outlet 12 is located in the outer circle. After entering the airflow channel 16 through the inlet 11, the airflow spirals outwards from the inside, eventually exiting the air passage chamber through the outlet 12 and flowing towards the fan. The spirally extending airflow channel 16 has a layered, encircling structure, which not only effectively lengthens the airflow channel 16 within a limited space but also better suits miniaturized respiratory therapy equipment. Furthermore, the spiral airflow channel 16 allows for smoother and gentler turning, eliminating sharp corners and resulting in a smoother and more gradual turning process during airflow. Therefore, the contact between the airflow and the inner wall of the airflow channel 16 is also gentler, preventing violent collisions and reducing noise from airflow collisions. Simultaneously, the rotating airflow effectively avoids turbulence formation, resulting in higher airflow efficiency. Furthermore, at least a portion of the airflow channels 16 overlap in the radial direction, which allows the sound waves of noise to be reflected within the airflow channels 16, thereby canceling each other out and making it more difficult for the sound waves to propagate, thus further improving the noise reduction effect.

[0060] Furthermore, the air inlet assembly of this invention incorporates the airflow channel 16 within the housing 1 via the guide rib 15, enabling mass production as a standalone module. This module can be easily assembled into a respiratory therapy device, making it suitable for various models and sizes, thus improving versatility. During maintenance and replacement, the air inlet assembly and its internal airflow channel 16 can be replaced individually without disassembling other components of the respiratory therapy device, ensuring stable airflow connection and sealing.

[0061] Preferably, such as Figure 3 , Figure 4 As shown, the inlet 11 is located in the center of the airflow channel 16, and the outlet 12 is located in the outer ring of the airflow channel 16. After the airflow enters the airflow channel 16 from the inlet 11, it flows outward in a spiral shape and flows out through the outlet 12 into the fan assembly 8.

[0062] As a preferred embodiment of this utility model, such as Figure 1 , Figure 3 , Figure 4As shown, inlet 11 and outlet 12 are disposed on opposite end faces of housing 1 along the first direction, so that the directions of inlet 11 and outlet 12 are perpendicular to the first direction respectively. The guide rib 15 extends in a plane perpendicular to the first direction, so that the extension direction of airflow channel 16 is perpendicular to the first direction.

[0063] The airflow channel 16 extends in a direction perpendicular to the axes of the inlet 11 and the outlet 12. On the one hand, this causes the airflow to undergo another 90-degree turn when entering the airflow channel 16 from the inlet 11 and exiting the airflow channel 16 through the outlet 12, further lengthening the airflow path and reducing the kinetic energy of the airflow through the turn, thereby improving the noise reduction effect. On the other hand, the extension of the airflow channel 16 does not occupy the space along the axes of the inlet 11 and the outlet 12. This arrangement further helps to reduce the overall volume of the air intake assembly, realize module miniaturization, and facilitate the docking and connection of the inlet 11 and the outlet 12 with other components of the respiratory therapy equipment, making it easier to install the air intake assembly into the respiratory therapy equipment.

[0064] Furthermore, such as Figure 2 As shown, the air intake assembly also includes a buffer 3, which consists of two buffers and is spaced apart inside the air passage chamber along the first direction. The airflow channel 16 is located between the two buffers 3.

[0065] The buffer 3 and the guide rib 15 together form an airflow channel 16. When the airflow collides with the buffer 3, the buffer 3 can absorb some of the kinetic energy of the airflow, thereby reducing the airflow velocity and the collision noise between the airflow and the buffer 3. On the other hand, the buffer 3 can also absorb some of the sound waves, making it difficult for the sound waves to penetrate to the outside of the housing 1.

[0066] Preferably, the buffer 3 is a structure made of a flexible material, such as sound-absorbing cotton. It can abut against both ends of the drainage rib 15 along the first direction, or the buffer 3 can be designed in a spiral shape so that it can cooperate with the drainage rib 15 to be inserted into the airflow channel 16, and there is a gap between the two buffers 3 to form the airflow channel 16.

[0067] In a preferred embodiment, such as Figure 3 , Figure 4 As shown, the air intake assembly also includes a flow divider 2 located within the airflow channel 16. The flow divider 2 has a flow divider rib 22 extending spirally from the inlet 11 to the outlet 12 to divide the airflow channel 16 into a first spiral section 161 and a second spiral section 162 in parallel.

[0068] The flow divider 22 divides the airflow channel 16 into two parallel spiral sections. After the airflow enters the airflow channel 16, it is divided into two streams by the flow divider 22. One stream spirals in the first spiral section 161, and the other stream spirals in the second spiral section 162. Thus, while ensuring that the total flow rate remains unchanged, the flow rate of each stream is reduced, thereby reducing the whistling sound generated by the large flow rate of the airflow. In addition, the airflow in the first spiral section 161 and the second spiral section 162 is mixed before flowing out of the outlet 12. During the mixing, the sound waves cancel each other out, thereby further improving the noise reduction effect.

[0069] like Figure 3 As shown, the two spiral segments have the same spiral direction, with one spiral segment located on the outer ring of the other spiral segment.

[0070] Specifically, the first spiral section 161 and the second spiral section 162 are connected at the outlet 12 so that the two airflows merge at the outlet 12 and flow out together through the outlet 12.

[0071] Furthermore, such as Figures 3 to 5 As shown, the diverter 2 also includes a flow guide 21, which is provided corresponding to the inlet 11, and the flow guide 21 has a flow guide slope 211 on the side facing the inlet 11.

[0072] like Figure 4 , Figure 5 As shown, the axis of inlet 11 is perpendicular to the extended plane of airflow channel 16, so that the airflow needs to make a turn of about 90° when entering airflow channel 16 from inlet 11. The guide slope 211 makes the turn of the airflow smoother and avoids sharp corners between inlet 11 and airflow channel 16, so that the turn of the airflow can be more gentle and gradual, thereby avoiding the formation of turbulence and reducing the noise generated when the airflow turns at high speed.

[0073] Of course, in other embodiments, the guide section 21 can also be configured as an arc surface or other irregular curved surface structure, as long as it can guide the airflow flowing along the axis of the inlet 11 to flow along the extension direction of the airflow channel 16, and there is no limitation here.

[0074] Specifically, such as Figure 3 As shown, the diversion rib 22 extends into the inlet 11 to be positioned and matched with the edge of the inlet 11, and divides the inlet 11 into a first air inlet 111 and a second air inlet 112. The first air inlet 111 is connected to the first spiral section 161, and the second air inlet 112 is connected to the second spiral section 162.

[0075] At least a portion of the diverting rib 22 extends into the inlet 11, so that the diverting rib 22 can sort and divert the airflow passing through the inlet 11, so that the airflow is divided into two streams by the diverting rib 22 when passing through the inlet 11, and enters the two spiral sections respectively, making the airflow in the two spiral sections more uniform.

[0076] Meanwhile, the diversion rib 22 can also cooperate with the edge of the inlet 11 to form the installation positioning of the diversion component 2, reducing the installation difficulty of the diversion component 2.

[0077] Preferably, such as Figure 5 As shown, the diversion rib 22 has abutting planes at both ends along the first direction, so that the diversion rib 22 can stably and reliably abut against the buffer 3 or other components, so that the position of the diversion rib 22 is stable and will not be deviated under the push of the airflow.

[0078] Furthermore, such as Figure 5 , Figure 6 As shown, the two ends of the diverter 2 are provided with fixing structures 23, and the air passage cavity is also provided with a mating rib 17. The mating rib 17 and the flow guide rib 15 are respectively provided with mating structures 151. The fixing structures 23 and the mating structures 151 are mated to fix one end of the diverter 2 to the flow guide rib 15 and the other end to the mating rib 17.

[0079] like Figure 5 , Figure 6 As shown, the guide rib 15 extends spirally from the inlet 11 to form an airflow channel 16, and the matching rib 17 is located at the outlet 12, working together with the diverter 2 to divide the airflow channel 16 into a first spiral section 161 and a second spiral section 162. Specifically, as... Figure 5 , Figure 6 As shown, the diversion rib 15 is provided with a fixing buckle at the inlet 11, and one end of the diversion rib 22 is provided with a buckle groove or a matching buckle that mates with the fixing buckle, so that the two are locked together. One of the matching rib 17 and the diversion component 2 is provided with an insertion protrusion, and the other with an insertion groove, so that the two are locked together. This fixes both ends of the diversion component 2. Simultaneously, in the first direction, a buffer 3 is also provided on one side of the diversion component 2. The buffer 3 compresses the diversion component 2, firmly pressing the diversion component 2 inside the housing 1.

[0080] Preferably, such as Figure 3 As shown, a silencing element 31 is provided in the first spiral section 161 and / or the second spiral section 162. The silencing element 31 cooperates with the flow divider 22 to form at least part of the first spiral section 161 and / or the second spiral section 162.

[0081] The silencer 31, in conjunction with the flow divider 22, forms at least a portion of the first spiral section 161 and / or the second spiral section 162. This is achieved by filling the airflow channel 16 with the silencer 31, thus creating at least a portion of the spiral sections. This prevents the width and extension direction of the first spiral section 161 and the second spiral section 162 from being excessively restricted by the shape of the shell 1. Two spiral sections can be constructed by partially filling the airflow channel 161 with the silencer 31, making the widths of the first spiral section 161 and the second spiral section 162 closer and resulting in a more uniform airflow within both spiral sections. Simultaneously, the silencer 31 itself is a flexible structure with a certain sound-absorbing effect, absorbing some noise and thus improving noise reduction. Furthermore, because the silencer 31 is easy to process, it is also easy to machine curved surfaces, beveled surfaces, and other structures on its surface, improving the guiding effect of airflow within the first spiral section 161 and the second spiral section 162.

[0082] In one specific embodiment, such as Figure 3 As shown, the second spiral section 162 is located outside the first spiral section 161, and the muffler 31 is disposed inside the second spiral section 162. The muffler 31 has a wavy curved surface on the side facing the second spiral section 162 for contact with the airflow.

[0083] It should be noted that the muffler 31 can be set along the extension direction of the first spiral section 161 and / or the second spiral section 162, or it can be set in a local area of ​​the first spiral section 161 and / or the second spiral section 162 as needed and according to the internal structure of the air passage cavity. No limitation is made here.

[0084] Preferably, the sound-absorbing component 31 is made of a flexible material, such as sound-absorbing cotton.

[0085] Furthermore, such as Figure 2 As shown, two buffer components 3 are also provided in the air passage. The airflow channel 16 is located between the two buffer components 3. The silencer 31 is integrally formed with one of the buffer components 3 and abuts against the other buffer component 3.

[0086] Specifically, the housing 1 has an open structure at the end face where the outlet 12 is located. One buffer 3 is located at the end face where the inlet 11 is located and is inside the housing 1. This buffer 3 is integrally formed with the silencer 31. Another buffer 3 is located at the open portion to cover the open portion. This buffer 3 has a notch to form the outlet 12. After the air intake assembly is assembled, the outer buffer 3 can abut against the silencer 31 to compress and limit the buffer 3 inside the housing 1, preventing the buffer 3 from being pushed up by the airflow.

[0087] Of course, a cover can also be provided so that the cover can close the opening, and both buffers 3 are housed in the air passage cavity. Under the fastening force of the cover and the shell 1, the buffers 3 are subjected to an inward squeezing force, which squeezes the silencer 31.

[0088] As a preferred embodiment, such as Figure 1 , Figure 2 As shown, the housing 1 includes a first body 13 and a second body 14. The thickness of the first body 13 is greater than the thickness of the second body 14. The inlet 11 is located in the first body 13, the outlet 12 is located in the second body 14, and the airflow channel 16 extends from the first body 13 to the second body 14. The volume of the airflow channel 16 in the first body 13 is greater than the volume in the second body 14.

[0089] Specifically, the first body 13 and the second body 14 are located on the extension surface of the airflow channel 16. Most of the airflow channel 16 is located within the first body 13, and the first body 13 is relatively thick. This results in a relatively large thickness in the area where the inlet 11 is located and in most of the area of ​​the airflow channel 16, which can effectively reduce the air intake resistance and the air resistance when the airflow spirals within the airflow channel 16, making the air intake smoother. On the other hand, the second body 14, where the outlet 12 and a small portion of the airflow channel 16 near the outlet 12 are located, is relatively thin. This causes the airflow within the airflow channel 16 to converge near the outlet 12 due to the reduced channel thickness, and then quickly flow out through the outlet 12 to the fan assembly 8, improving the intake efficiency of the fan assembly 8 and preventing the airflow from stagnating within the airflow channel 16.

[0090] Preferably, such as Figure 1 As shown, in the direction of the airflow channel 16 extending toward the outlet 12, the thickness of the second body 14 gradually decreases, so that the thickness of the airflow channel 16 inside it gradually decreases toward the outlet 12, so that the airflow gradually converges as it flows toward the outlet 12.

[0091] On the other hand, because the first body 13 is relatively thick, it also provides installation space for the buffer 3. This allows the thickness of the portion of the airflow channel 16 within the first body 13 and the portion within the second body 14 to be closer after the buffer 3 is installed inside the first body 13. This makes the thickness of the airflow channel 16 more uniform in its extension direction, preventing abrupt changes and avoiding turbulence caused by sudden changes in air resistance during airflow. Specifically, the buffer 3 is installed inside the first body 13, and the difference in thickness between the first body 13 and the second body 14 is the same as the thickness of the buffer 3.

[0092] This utility model also discloses a respiratory therapy device, including a housing 4 and a fan assembly 8 disposed inside the housing 4. The housing 4 has an air inlet 52 and an air outlet 61, and the fan assembly 8 has an air inlet 81 and an air outlet. It also includes the aforementioned air inlet assembly, which is located inside the housing 4 and fixedly connected. The inlet 11 is connected to the air inlet 52, and the outlet 12 is connected to the air inlet 81, so that the air inlet 52 is connected to the air inlet 81 through the airflow channel 16.

[0093] Specifically, such as Figure 7 , Figure 8 , Figure 9 As shown, the outer casing 4 has a first side cover 5 and a second side cover 6 at both ends along its length. The first side cover 5 has an air inlet 52, and the second side cover 6 has an air outlet 61. The axis of the inlet 11 of the casing 1 coincides with the axis of the air inlet 52, and the outlet 12 is parallel to the axis of the inlet 11. The extension plane of the airflow channel 16 is perpendicular to the axis of the inlet 11. When the respiratory therapy device is in use, the overall airflow path is from the first side cover 5 along the length of the respiratory therapy device to the second side cover 6, and then out through the air outlet 61. When the airflow flows into the interior of the casing 1, it spirals in a plane perpendicular to that direction.

[0094] Preferably, such as Figure 10 , Figure 11 As shown, the first side cover 5 is also provided with an air intake grille 51 and a filter element 53 at the air intake 52. The air intake grille 51 is located upstream of the filter element 53, and the filter element 53 can be filter cotton, sound-absorbing cotton, etc.

[0095] Preferably, such as Figure 9 As shown, the first side cover 5 is fixedly connected to the housing 1. The connection method can be screw connection, snap-fit ​​connection, etc., and is not limited here.

[0096] Preferably, such as Figure 9 As shown, an inner housing 7 is provided inside the outer housing 4, and the fan assembly 8 is located inside the inner housing 7. The side of the outer housing 1 facing the inner housing 7 is an open structure so that the outer housing 1 and the inner housing 7 cooperate to form an airflow channel 16.

[0097] Specifically, such as Figure 9 As shown, the housing 1 and the mounting inner shell 7 are arranged along a first direction (the length direction of the respiratory therapy device), with the housing 1 closer to the first side cover 5. The opening of the housing 1 abuts against the mounting inner shell 7 so that the two cooperate to form an airflow channel 16. Specifically, as... Figure 1 As shown, a buffer element 3 is provided at the opening, which can be sound-absorbing cotton or the like. The buffer element 3 is clamped by the housing 1 and the inner housing 7, so that the buffer element 3 closes the opening.

[0098] Furthermore, such as Figures 12 to 14 As shown, an air inlet channel 42 is provided inside the outer casing 4. The outlet 12 is connected to the air inlet 81 through the air inlet channel 42. The air inlet channel 42 includes an extension section 421 and a guide section 422. The extension section 421 extends in a direction perpendicular to the extension plane of the airflow channel 16. The guide section 422 has an angle with the extension section 421 and is connected to the air inlet 81.

[0099] The extension 421 of the air inlet channel 42 coincides with the axis of the outlet 12, allowing the airflow in the airflow channel 16 to flow smoothly through the outlet 12 into the extension 421. Since the suction force on the airflow is stronger the closer it is to the fan assembly 8, the smoothly extended air path can reduce the probability of airflow colliding with the inner wall of the air inlet channel 42 while ensuring smooth and efficient air intake, thus avoiding noise generation and problems such as poor airflow. The angle between the extension 421 and the guide 422 not only guides the airflow to change direction again, thus extending the air path and reducing noise, but also helps to arrange the extension 421 and the guide 422 on different sides of the fan assembly 8. This allows the air inlet channel 42 to surround or enclose multiple sides of the fan assembly 8, making the layout of the air inlet channel 42 and the fan assembly 8 more compact and reasonable, saving internal space of the respiratory therapy equipment, and helping to achieve the miniaturization design of the respiratory therapy equipment.

[0100] Specifically, the inner casing 7 has an air inlet duct, which forms an extension 421 of the air inlet channel 42. For example... Figure 12 , Figure 13 , Figure 14 As shown, the air inlet 81 of the fan assembly 8 is located at the top, the extension section 421 is located below the fan assembly 8 or on the side of the lateral direction, and the guide section 422 extends vertically to guide the airflow upward to the top of the fan assembly 8 and into the air inlet 81.

[0101] Specifically, a noise reduction component 424 is provided at the corner between the guide section 422 and the extension section 421. The noise reduction component 424 is preferably a flexible component such as sound-absorbing cotton, so that the airflow is smoother when turning.

[0102] Preferably, such as Figure 14 As shown, the extension section 421 is provided with a first grille 423, which is used to sort the airflow coming out of the outlet 12.

[0103] Specifically, such as Figure 8 , Figure 9 , Figure 12 As shown, the respiratory therapy device is also equipped with an air outlet pipe 41. One end of the air outlet pipe 41 is connected to the air outlet of the fan assembly 8, and the other end is connected to the air outlet 61 of the second side cover 6.

[0104] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0105] 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.

[0106] 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. An air inlet assembly for a respiratory therapy device, comprising a housing, wherein an air passage chamber is formed inside the housing, and the housing is provided with an inlet and an outlet communicating with the air passage chamber, characterized in that, The air passage is provided with a flow guide rib, which extends in a spiral shape to form an airflow channel extending along a spiral path within the air passage. The airflow channel gradually extends outward from the inlet to the outlet.

2. The air inlet assembly for a respiratory therapy device according to claim 1, characterized in that, The inlet and the outlet are disposed on opposite end faces of the housing along a first direction, such that the directions of the inlet and the outlet are perpendicular to the first direction, and the guide rib extends in a plane perpendicular to the first direction, such that the extension direction of the airflow channel is perpendicular to the first direction.

3. The air inlet assembly for a respiratory therapy device according to claim 2, characterized in that, The air intake assembly further includes two buffers, which are spaced apart inside the air passage chamber along the first direction, and the airflow channel is located between the two buffers.

4. The air inlet assembly for a respiratory therapy device according to claim 1, characterized in that, The air intake assembly further includes a flow divider located within the airflow channel. The flow divider has flow divider ribs extending spirally from the inlet to the outlet to divide the airflow channel into parallel first spiral sections and second spiral sections.

5. The air inlet assembly for a respiratory therapy device according to claim 4, characterized in that, The diverter also includes a flow guide, which is provided corresponding to the inlet, and the flow guide has a flow guide slope on the side facing the inlet.

6. The air inlet assembly for a respiratory therapy device according to claim 4, characterized in that, The diversion rib extends into the inlet to be positioned and engaged with the edge of the inlet, and divides the inlet into a first air inlet and a second air inlet. The first air inlet is connected to the first spiral section, and the second air inlet is connected to the second spiral section.

7. The air inlet assembly for a respiratory therapy device according to claim 4, characterized in that, The flow divider is provided with fixing structures at both ends, and a matching rib is provided in the air passage cavity. The matching rib and the drainage rib are respectively provided with matching structures. The fixing structure and the matching structure are matched so that one end of the flow divider is fixed to the drainage rib and the other end is fixed to the matching rib.

8. The air inlet assembly for a respiratory therapy device according to claim 4, characterized in that, A silencing element is provided in the first spiral section and / or the second spiral section, and the silencing element cooperates with the flow divider to form at least a portion of the first spiral section and / or the second spiral section.

9. The air inlet assembly for a respiratory therapy device according to claim 8, characterized in that, The air passage is also provided with two buffer components. The airflow channel is located between the two buffer components. The silencer is integrally formed with one of the buffer components and abuts against the other buffer component.

10. The air inlet assembly for a respiratory therapy device according to claim 1, characterized in that, The housing includes a first body and a second body, the thickness of the first body is greater than the thickness of the second body, the inlet is located in the first body, the outlet is located in the second body, the airflow channel extends from the first body to the second body, and the volume of the airflow channel in the first body is greater than the volume in the second body.

11. The air inlet assembly for a respiratory therapy device according to claim 10, characterized in that, The first body has a buffer inside, and the difference in thickness between the first body and the second body is the same as the thickness of the buffer.

12. A respiratory therapy device, comprising a housing and a fan assembly disposed inside the housing, the housing having an air inlet and an air outlet, and the fan assembly having an air inlet and an air outlet, characterized in that, It also includes the air intake assembly as described in any one of claims 1-11, wherein the air intake assembly is located and fixedly connected to the inside of the housing, the inlet is connected to the air inlet, and the outlet is connected to the air inlet, so that the air inlet is connected to the air inlet through the airflow channel.

13. The respiratory therapy device according to claim 12, characterized in that, The outer shell has an inner mounting shell inside, and the fan assembly is disposed inside the inner mounting shell. The side of the outer shell facing the inner mounting shell is an open structure so that the outer shell and the inner mounting shell cooperate to form the airflow channel.

14. The respiratory therapy device according to claim 12, characterized in that, An air inlet channel is provided inside the housing, and the outlet is connected to the air inlet through the air inlet channel. The air inlet channel includes an extension section and a guide section. The extension section extends in a direction perpendicular to the extension plane of the airflow channel, and the guide section has an angle with the extension section. The guide section is connected to the air inlet.

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