An oxygen inlet module applied to a respiratory treatment device

Abstract

The application discloses an oxygen inlet module applied to a respiratory treatment device, which comprises a base, a gas pressure adjusting module and a gas flow control module arranged on the base, the base is provided with an oxygen inlet and an oxygen outlet, and the base is further provided with an oxygen delivery channel which is sequentially connected with the oxygen inlet, the gas pressure adjusting module, the gas flow control module and the oxygen outlet; the oxygen inlet module further comprises a sensor assembly for monitoring oxygen parameters in the oxygen delivery channel; the base is provided with a mounting position at the bottom or the side thereof, and the sensor assembly is mounted on the mounting position through a mounting piece; the base is provided with a monitoring opening which is connected with the oxygen delivery channel, and a parameter acquisition part of the sensor assembly is connected with the oxygen delivery channel through the monitoring opening. The oxygen inlet module has the mounting position at the bottom or the side of the base, the sensor assembly is directly fixed on the mounting position, the parameter acquisition part of the sensor assembly is connected with the oxygen delivery channel through the monitoring opening, and the installation stability of the sensor assembly and the real-time performance of monitoring the oxygen parameters are greatly improved.

Description

Technical Field

[0001] This application belongs to the field of respiratory therapy equipment technology, specifically relating to an oxygen intake module used in respiratory therapy equipment. Background Technology

[0002] The oxygen intake module in respiratory therapy equipment such as ventilators and high-flow oxygen therapy devices is the core component for achieving precise oxygen delivery. It typically includes a gas pressure regulation module, a gas flow control module, and an oxygen delivery pathway, used to adjust parameters such as oxygen pressure and flow rate. To ensure treatment safety, the oxygen intake module needs to monitor oxygen parameters within the delivery pathway in real time, such as flow rate, temperature, and humidity. Traditional solutions usually place the sensor assembly externally on the base of the oxygen intake module and connect it to the oxygen delivery pathway via tubing.

[0003] However, the above-mentioned traditional design scheme has the following drawbacks: 1. Poor anti-interference capability of sensor components: External sensor components are easily affected by external factors such as ambient temperature and mechanical vibration, which can cause monitoring data drift and affect the accuracy of oxygen control. 2. Insufficient structural stability: The sensor assembly and the oxygen supply module are connected by a flexible pipeline, which is prone to relative displacement when the respiratory therapy equipment moves or vibrates. This not only aggravates the wear of the sensor assembly, but may also lead to oxygen leakage due to loose connection. 3. Low space utilization: The external layout of the sensor components requires additional internal space of the respiratory therapy equipment, increasing the overall size and hindering the miniaturization design of the respiratory therapy equipment; 4. High assembly and maintenance costs: The separate structure of the oxygen intake module and the sensor assembly makes the disassembly and assembly of the sensor assembly more complicated, which affects the assembly efficiency of the respiratory therapy equipment. In addition, sensor calibration is difficult and replacement efficiency is low. Utility Model Content

[0004] This application provides an oxygen intake module for use in respiratory therapy equipment, which solves the technical problems of poor anti-interference ability and structural stability of sensor components, low space utilization and complex disassembly and assembly in traditional oxygen intake modules.

[0005] The technical solution adopted in this application is as follows: An oxygen supply module for a respiratory therapy device includes a base, and a gas pressure regulating module and a gas flow control module disposed on the base. The base has an oxygen inlet and an oxygen outlet. The base also has an oxygen delivery path that sequentially connects the oxygen inlet, the gas pressure regulating module, the gas flow control module, and the oxygen outlet. The oxygen supply module further includes a sensor assembly for monitoring oxygen parameters in the oxygen delivery path. The base has a mounting position at its bottom or side, and the sensor assembly is mounted on the mounting position via a mounting bracket. The base has a monitoring port that communicates with the oxygen delivery path, and the parameter acquisition unit of the sensor assembly is connected to the oxygen delivery path through the monitoring port.

[0006] The sensor assembly includes a circuit board and a sensor body mounted on the circuit board. The mounting component includes a plurality of spaced mounting posts. The circuit board has mounting holes. Each mounting post includes a fixing part fixedly connected to a base and a support part detachably connected to the fixing part. The support part passes through the mounting holes and clamps the circuit board between the fixing part and the support part.

[0007] The base is also provided with a connecting groove that connects the monitoring port to the oxygen supply passage, and the parameter acquisition unit is at least partially located in the connecting groove.

[0008] The side wall of the connecting groove is provided with a sealing ring groove, and a sealing ring rib is provided in the sealing ring groove. The sealing ring rib abuts against the parameter acquisition unit and the inner wall of the sealing ring groove respectively.

[0009] The oxygen delivery pathway includes a first pathway connecting the oxygen inlet to the gas pressure regulating module, and a second pathway connecting the gas pressure regulating module to the gas flow control module. The oxygen inlet and the gas pressure regulating module are located on opposite sides of the base, and the first pathway and the second pathway are arranged perpendicularly.

[0010] The oxygen delivery pathway also includes a third pathway connecting the gas flow control module to the oxygen outlet. The average cross-sectional area of ​​the first pathway is S1, and the average cross-sectional area of ​​the third pathway is S2, where S1 ≥ 2.5S2.

[0011] The base is integrally formed, and the oxygen inlet includes a high-pressure oxygen inlet and a low-pressure oxygen inlet. The base has a first oxygen delivery passage and a second oxygen delivery passage. The first oxygen delivery passage is connected to the gas pressure regulating module and the gas flow control module, respectively. The high-pressure oxygen inlet is connected to the oxygen outlet through the first oxygen delivery passage, and the low-pressure oxygen inlet is connected to the oxygen outlet through the second oxygen delivery passage.

[0012] The oxygen delivery path includes a first path connecting the oxygen inlet to the gas pressure regulating module. The oxygen inlet module also includes a filter element disposed within the first path. The base includes a seat and an oxygen inlet assembly. The oxygen inlet assembly includes an oxygen inlet pipe detachably connected to the seat. The oxygen inlet is located at the end of the oxygen inlet pipe. The oxygen inlet pipe and the seat cooperate to form the first path. The filter element is installed inside the oxygen inlet pipe.

[0013] The oxygen inlet pipe and the base cooperate to form a limiting groove. The filter element has a snap-fit ​​ring at its end. The filter element is installed on the oxygen inlet pipe by snap-fitting the snap-fit ​​ring with the limiting groove.

[0014] The base includes an oxygen outlet assembly, which includes an oxygen outlet pipe and a fixing plate. One end of the oxygen outlet pipe extends into the base body, and a snap-fit ​​groove is formed on the periphery of the oxygen outlet pipe. One end of the fixing plate extends into the snap-fit ​​groove, and the other end is fixed to the base body.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. The oxygen supply module of this application includes a gas pressure regulation module and a gas flow control module. Oxygen enters the oxygen delivery path in the base through the oxygen inlet. After being regulated by the gas pressure regulation module, the oxygen delivery pressure tends to stabilize. Then, it travels along the oxygen delivery path to the gas flow control module. The gas flow control module adjusts the oxygen delivery ratio according to the air delivery volume of the respiratory therapy device to provide the user with an appropriate amount of airflow. Furthermore, the oxygen supply module of this application has a mounting position at the bottom or side of the base. The sensor assembly is directly fixed to the mounting position, and its parameter acquisition unit is connected to the oxygen delivery path through a monitoring port, significantly improving the installation stability of the sensor assembly and the real-time monitoring of oxygen parameters. Compared to the traditional method of connecting the sensor assembly to the oxygen supply module through pipelines, the oxygen in the oxygen delivery path of this application can be directly collected and monitored by the sensor assembly without being transmitted through pipelines. For example, when the temperature fluctuates greatly in the working environment of the respiratory therapy equipment, the humidity monitoring of traditional sensor components may be inaccurate due to condensation in the pipeline. However, since the sensor components of this solution are in direct contact with the oxygen delivery path, they can reflect the real oxygen status in real time and ensure the accurate control of oxygen parameters.

[0016] Furthermore, the sensor assembly of this application is fixedly mounted on the mounting position of the base via a mounting bracket, maintaining the stability of the relative position between the sensor assembly and the oxygen supply module. When the respiratory therapy equipment vibrates due to handling, collisions, etc., it can significantly reduce the displacement or wear of the sensor assembly caused by vibration. In particular, respiratory therapy equipment is often used in emergency transport, where the risk of vibration is high. The stable sensor assembly of this application can provide stable parameter monitoring, thereby ensuring a stable air supply for the respiratory therapy equipment.

[0017] 2. As a preferred embodiment of this application, the matching arrangement of the mounting posts and mounting holes enables rapid and accurate positioning of the sensor assembly. During the production and assembly process, the assembly personnel only need to align the mounting holes of the circuit board with the fixing part of the mounting post, and then install the support part to complete the fixing of the circuit board. In this way, on the one hand, the assembly efficiency of the sensor assembly is improved, thereby improving the assembly efficiency of the oxygen intake module; on the other hand, the clamping of the support part and the fixing part can provide a more uniform mounting force on the circuit board, and the weight of the sensor assembly is evenly borne by multiple mounting posts, which helps to improve the stress stability and uniformity of the circuit board and reduce the possibility of stress concentration on the circuit board. In addition, the multi-point spaced mounting post design ensures the long-term stability of the sensor assembly. During the operation of the respiratory therapy equipment, the circuit board may undergo thermal expansion and contraction due to temperature changes. This solution effectively disperses thermal stress through the even distribution of multiple mounting posts, further reducing the probability of stress concentration on the circuit board.

[0018] Furthermore, the detachable support design reduces the maintenance burden on the sensor assembly. When the sensor assembly needs repair or replacement, the operator only needs to remove the support to take out the circuit board. The disassembly and assembly process is very convenient, reducing the downtime of the oxygen intake module and making it highly suitable for respiratory therapy equipment with continuous operation requirements.

[0019] 3. As a preferred embodiment of this application, the connecting groove can buffer the oxygen flowing into the oxygen delivery path, enabling the sensor assembly to collect more stable oxygen parameters and improving the monitoring accuracy of the sensor assembly. Taking oxygen concentration monitoring as an example, during the adjustment process of the gas flow control module, the airflow composition in the oxygen delivery path may experience instantaneous fluctuations. The connecting groove can provide a certain buffering and adjustment space for the fluctuating airflow to reduce or eliminate instantaneous fluctuations, providing the sensor assembly with more stable monitoring values. In addition, the design that the parameter acquisition unit is at least partially located within the connecting groove can provide a certain degree of protection for the parameter acquisition unit, reducing interference from the external environment and helping to extend the service life of the sensor assembly. Furthermore, the fact that the parameter acquisition unit is at least partially located within the connecting groove brings it closer to the oxygen delivery path, thereby enabling the sensor assembly to detect changes in airflow parameters more quickly, improving the real-time monitoring performance of the sensor assembly, and allowing for rapid response adjustments based on the monitoring results.

[0020] 4. As a preferred embodiment of this application, the sealing ring groove and sealing ring rib significantly improve the sealing performance of the connecting groove, reduce the probability of oxygen leakage from the oxygen supply path through the connecting groove, and help optimize the structural design of the oxygen inlet module. Furthermore, the sealing ring groove provides a more stable installation space for the sealing ring rib, enhancing its dynamic anti-interference capability, thus enabling it to be stably installed within the connecting groove. This reduces the probability of the sealing ring rib dislodging due to vibration of the oxygen inlet module, and improves the sealing stability of the sealing ring rib for the connecting groove.

[0021] 5. In a preferred embodiment of this application, the first and second passages are arranged vertically, improving the smoothness of oxygen flow. High-pressure oxygen entering the first passage through the oxygen inlet undergoes a 90-degree turn within the gas pressure regulating module, significantly reducing the probability of turbulence that might occur when oxygen moves in a straight flow path, resulting in more stable and efficient oxygen delivery. Furthermore, the distributed layout of the oxygen inlet and the gas pressure regulating module facilitates heat dissipation for the gas pressure regulating module. The gas pressure regulating module generates heat during operation; placing the oxygen inlet and the gas pressure regulating module on opposite sides of the base, combined with the vertical flow path design of the first and second passages, creates a natural convection heat dissipation path, aiding in heat dissipation for the gas pressure regulating module and improving the operational stability of the oxygen intake module in high-temperature environments. In addition, the vertical arrangement of the first and second passages reduces the space occupied by the oxygen intake module in a single direction, making the internal layout of the base more compact, contributing to the miniaturization of the base, and consequently, the miniaturization of the oxygen intake module.

[0022] 6. As a preferred embodiment of this application, the one-piece molded base significantly improves the structural strength of the base while avoiding oxygen leakage caused by splicing gaps, thereby improving the sealing performance of the oxygen intake module in vibration environments. Simultaneously, the one-piece molded base reduces the assembly pressure of the oxygen intake module, helping to increase the assembly speed. The configuration of the first and second oxygen delivery channels enhances the adaptability of the oxygen intake module to different oxygen production needs. When the respiratory therapy device requires rapid oxygen delivery, high-pressure oxygen can be delivered to the first oxygen delivery channel through the high-pressure oxygen inlet to quickly provide the required large amount of oxygen to the respiratory therapy device, suitable for emergency resuscitation and other environments. The low-pressure oxygen inlet is more suitable for respiratory therapy devices in daily use. The configuration of the first and second oxygen delivery channels also provides a safety redundancy design for the oxygen intake module. If one of the first or second oxygen delivery channels malfunctions or becomes blocked, the other can still maintain the oxygen delivery capacity of the oxygen intake module, optimizing the structural design of the oxygen intake module. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the oxygen intake module according to one embodiment of this application; Figure 2 This is a cross-sectional view of the oxygen intake module according to one embodiment of this application; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 for Figure 2 Enlarged view of part B; Figure 5 This is a schematic diagram of the oxygen intake module in another embodiment of this application.

[0024] List of components and reference numerals: 1. Base; 11. Oxygen inlet; 111. High-pressure oxygen inlet; 112. Low-pressure oxygen inlet; 12. Oxygen outlet; 13. Oxygen delivery passage; 131. First passage; 132. Second passage; 133. Third passage; 14. Mounting position; 15. Monitoring port; 16. Connecting groove; 161. Sealing ring groove; 162. Sealing ring rib; 17. First oxygen delivery passage; 18. Second oxygen delivery passage; 19. Base body; 2. Gas pressure regulation module; 3. Gas flow control module; 4. Sensor assembly; 41. Parameter acquisition unit; 42. Circuit board; 43. Sensor body; 5. Mounting post; 51. Fixing part; 52. Supporting part; 53. Buffer pad; 6 filter elements, 61 snap-fit ​​rings; 7. Oxygen inlet tube; 8 limiting grooves; 9. Oxygen outlet assembly, 91. Oxygen outlet pipe, 911. Clip-on slot, 92. Fixing plate. Detailed Implementation

[0025] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0027] Furthermore, it should be understood in the description of this application 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, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] In this application, unless otherwise expressly 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 application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., 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 application. 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 can be combined in any suitable manner in one or more embodiments or examples.

[0030] like Figures 1 to 5 As shown, an oxygen supply module for a respiratory therapy device includes a base 1, a gas pressure regulating module 2 and a gas flow control module 3 disposed on the base 1. The base 1 has an oxygen inlet 11 and an oxygen outlet 12. The base 1 also has an oxygen delivery path 13 that sequentially connects the oxygen inlet 11, the gas pressure regulating module 2, the gas flow control module 3 and the oxygen outlet 12. The oxygen supply module also includes a sensor assembly 4 for monitoring oxygen parameters in the oxygen delivery path 13. The base 1 has a mounting position 14 at the bottom or side, and the sensor assembly 4 is mounted on the mounting position 14 by a mounting bracket. The base 1 has a monitoring port 15 that communicates with the oxygen delivery path 13, and the parameter acquisition unit 41 of the sensor assembly 4 is connected to the oxygen delivery path 13 through the monitoring port 15.

[0031] The oxygen supply module of this application includes a gas pressure regulation module 2 and a gas flow control module 3. Oxygen enters the oxygen delivery path 13 in the base 1 through the oxygen inlet 11. After being regulated by the gas pressure regulation module 2, the oxygen delivery pressure tends to stabilize, and then it flows along the oxygen delivery path 13 to the gas flow control module 3. The gas flow control module 3 adjusts the oxygen delivery ratio according to the air delivery volume of the respiratory therapy device to provide the user with an appropriate amount of airflow. Furthermore, the oxygen supply module of this application has a mounting position 14 at the bottom or side of the base 1. The sensor assembly 4 is directly fixed to the mounting position 14, and its parameter acquisition unit 41 is connected to the oxygen delivery path 13 through the monitoring port 15, significantly improving the installation stability of the sensor assembly 4 and the real-time monitoring of oxygen parameters. Compared to the traditional method of connecting the sensor assembly 4 to the oxygen supply module through pipelines, the oxygen in the oxygen delivery path 13 of this application can be directly collected and monitored by the sensor assembly 4 without being transmitted through pipelines. For example, when the temperature fluctuates greatly in the working environment of the respiratory therapy equipment, the humidity monitoring of the traditional sensor component 4 may be inaccurate due to condensation in the pipeline. However, since the sensor component 4 is in direct contact with the oxygen delivery passage 13, this solution can reflect the real oxygen status in real time and ensure the accurate control of oxygen parameters.

[0032] Furthermore, the sensor assembly 4 of this application is fixedly installed on the mounting position 14 of the base 1 via a hanger, maintaining the stability of the relative position between the sensor assembly 4 and the oxygen supply module. When the respiratory therapy equipment vibrates due to handling, collision, etc., it can significantly reduce the displacement or wear of the sensor assembly 4 caused by vibration. In particular, respiratory therapy equipment is often used in emergency transport, where the risk of vibration is high. The stable sensor assembly 4 of this application can provide stable parameter monitoring, thereby ensuring a stable air supply for the respiratory therapy equipment.

[0033] The oxygen parameters that the parameter acquisition unit 41 in this application can acquire include, but are not limited to, oxygen concentration, oxygen pressure, oxygen flow rate, oxygen temperature, and oxygen humidity.

[0034] Specifically, this application does not limit the position of the mounting position 14, which can be as follows: Figure 1 As shown, the bottom of base 1 can also be as follows: Figure 5 The purpose of the design shown on the side of the base 1 is to ensure that the sensor assembly 4 is fixed in its relative position to the base 1.

[0035] Preferably, the parameter acquisition unit 41 has multiple acquisition sections along the extension direction of the monitoring port 15. These acquisition sections include, but are not limited to, a gas pressure acquisition section, a gas flow rate acquisition section, a specific gas component concentration acquisition section, a gas temperature acquisition section, and a gas humidity acquisition section. One or more of these acquisition sections can be arranged along the extension direction of the monitoring port 15. In another preferred embodiment, the number of monitoring ports 15 can also be multiple, corresponding to the number of acquisition sections, with each acquisition section located within its corresponding monitoring port 15.

[0036] As a preferred embodiment of this application, such as Figure 1 , Figure 3 As shown, the sensor assembly 4 includes a circuit board 42 and a sensor body 43 mounted on the circuit board 42. The mounting component includes a plurality of spaced mounting posts 5. The circuit board 42 has mounting holes. The mounting posts 5 include a fixing part 51 fixedly connected to the base 1 and a supporting part 52 detachably connected to the fixing part 51. The supporting part 52 passes through the mounting holes and clamps the circuit board 42 between the fixing part 51 and the supporting part 52.

[0037] The mating arrangement of the mounting posts 5 and mounting holes enables rapid and precise positioning of the sensor assembly 4. During production and assembly, the assembler only needs to align the mounting holes of the circuit board 42 with the fixing part 51 of the mounting post 5, and then install the support part 52 to complete the fixing of the circuit board 42. This improves the assembly efficiency of the sensor assembly 4, thereby improving the assembly efficiency of the oxygen supply module. Furthermore, the clamping action of the support part 52 and the fixing part 51 provides a more uniform mounting force on the circuit board 42, and the weight of the sensor assembly 4 is evenly borne by multiple mounting posts 5, which helps improve the stress stability and uniformity of the circuit board 42, reducing the possibility of stress concentration. In addition, the multi-point spaced mounting post design ensures the long-term stability of the sensor assembly 4. During the operation of the respiratory therapy equipment, the circuit board 42 may experience thermal expansion and contraction due to temperature changes. This solution, through the even distribution of multiple mounting posts 5, effectively disperses thermal stress, further reducing the probability of stress concentration on the circuit board 42.

[0038] Furthermore, the detachable support 52 design reduces the maintenance burden on the sensor assembly 4. When the sensor assembly 4 needs repair or replacement, the operator only needs to remove the support 52 to take out the circuit board 42. The disassembly and assembly process is very convenient, reducing the downtime waiting time of the oxygen intake module and making it highly suitable for respiratory therapy equipment with continuous operation requirements.

[0039] Preferably, such as Figure 3 As shown, the sensor body 43 is spaced apart from the bottom wall of the base 1. As the core component of the sensor assembly 4, the working stability of the sensor body 43 directly affects the monitoring accuracy of the sensor assembly 4. The spaced-apart arrangement between the sensor body 43 and the base 1 provides a certain safety space. When the oxygen supply module is subjected to vibration or impact, causing relative vibration between the sensor assembly 4 and the base 1, the space between the sensor body 43 and the base 1 prevents the sensor body 43 from being squeezed by the base 1, thus ensuring the working stability of the sensor assembly 4.

[0040] Preferably, such as Figure 3 As shown, a buffer pad 53 is fitted on the top of the support part 52. The buffer pad 53 increases the flexibility of the support part 52 in supporting the circuit board 42. When the circuit board 42 tends to be displaced relative to the mounting component due to the vibration of the oxygen intake module, the buffer pad 53 can convert the impact potential energy of the circuit board 42 into the elastic potential energy required for its own deformation, thereby reducing the relative impact between the circuit board 42 and the mounting component and improving the working stability of the circuit board 42.

[0041] As a preferred embodiment of this application, such as Figure 3 As shown, the base 1 also has a connecting groove 16 that connects the monitoring port 15 to the oxygen supply passage 13, and the parameter acquisition unit 41 is at least partially located in the connecting groove 16.

[0042] The connecting groove 16 provides a buffer for the oxygen flowing into the oxygen delivery path 13, enabling the sensor assembly 4 to collect more stable oxygen parameters and improving its monitoring accuracy. Taking oxygen concentration monitoring as an example, during the adjustment process of the gas flow control module 3, the airflow composition in the oxygen delivery path 13 may experience instantaneous fluctuations. The connecting groove 16 provides a buffer and adjustment space for these fluctuating airflows, reducing or eliminating these instantaneous fluctuations and providing the sensor assembly 4 with more stable monitoring values. Furthermore, the design of the parameter acquisition unit 41, which is at least partially located within the connecting groove 16, provides some protection for the parameter acquisition unit 41, reducing interference from the external environment and helping to extend the service life of the sensor assembly 4. Moreover, the fact that the parameter acquisition unit 41 is at least partially located within the connecting groove 16 brings it closer to the oxygen delivery path 13, allowing the sensor assembly 4 to detect changes in airflow parameters more quickly, improving its real-time monitoring performance and enabling rapid response adjustments based on the monitoring results.

[0043] Preferably, the parameter acquisition unit 41 is entirely located within the connecting groove 16.

[0044] As a preferred embodiment of this implementation, such as Figure 3 As shown, a sealing ring groove 161 is provided on the side wall of the connecting groove 16, and a sealing ring rib 162 is provided in the sealing ring groove 161. The sealing ring rib 162 abuts against the parameter acquisition unit 41 and the inner wall of the sealing ring groove 161 respectively.

[0045] The sealing ring groove 161 and sealing ring rib 162 significantly improve the sealing performance of the connecting groove 16, reducing the probability of oxygen leakage from the oxygen supply passage 13 through the connecting groove 16, and helping to optimize the structural design of the oxygen inlet module. Furthermore, the sealing ring groove 161 provides a more stable installation space for the sealing ring rib 162, enhancing its dynamic anti-interference capability and enabling it to be stably installed within the connecting groove 16. This reduces the probability of the sealing ring rib 162 dislodging due to vibration of the oxygen inlet module, and improves the sealing stability of the sealing ring rib 162 within the connecting groove 16.

[0046] Furthermore, the sealing ring rib 162 is an elastic element and is interference-fitted with the sealing ring groove 161. This enhances the sealing performance of the sealing ring rib 162 while allowing it to adapt to dimensional changes caused by thermal expansion and contraction.

[0047] As a preferred embodiment of this application, such as Figure 2As shown, the oxygen delivery passage 13 includes a first passage 131 that connects the oxygen inlet 11 to the gas pressure regulating module 2, and a second passage 132 that connects the gas pressure regulating module 2 to the gas flow control module 3. The oxygen inlet 11 and the gas pressure regulating module 2 are located on two opposite sides of the base 1, and the first passage 131 and the second passage 132 are arranged vertically.

[0048] The vertical arrangement of the first passage 131 and the second passage 132 improves the smoothness of oxygen flow. The high-pressure oxygen entering the first passage 131 through the oxygen inlet 11 undergoes a 90-degree turn in the gas pressure regulating module 2, significantly reducing the probability of turbulence that might occur when oxygen moves in a straight flow channel, resulting in a more stable and efficient oxygen delivery. Furthermore, the distributed layout of the oxygen inlet 11 and the gas pressure regulating module 2 facilitates heat dissipation. The gas pressure regulating module 2 generates heat during operation. By placing the oxygen inlet 11 and the gas pressure regulating module 2 on opposite sides of the base 1, combined with the vertical flow channel design of the first passage 131 and the second passage 132, a natural convection heat dissipation path is formed, which helps to cool the gas pressure regulating module 2 and improves the operational stability of the oxygen intake module in high-temperature environments. In addition, the vertical arrangement of the first passage 131 and the second passage 132 reduces the space occupied by the oxygen intake module in a single direction, making the internal layout of the base 1 more compact, contributing to the miniaturization of the base 1, and consequently, the miniaturization of the oxygen intake module.

[0049] This application does not limit the angle between the first passage 131 and the second passage 132, which may not be completely perpendicular, and the angle between them may be between 80° and 100°.

[0050] As a preferred embodiment of this implementation, such as Figure 2 As shown, the oxygen delivery passage 13 also includes a third passage 133 that connects the gas flow control module 3 to the oxygen outlet 12. The average cross-sectional area of ​​the first passage 131 is S1, and the average cross-sectional area of ​​the third passage 133 is S2, where S1 ≥ 2.5S2.

[0051] The first passage 131 provides ample space for the input of oxygen at the front end, acting as a buffer for the airflow. When high-pressure oxygen enters the gas pressure regulating module 2 through the larger cross-section of the first passage 131, the airflow velocity is effectively reduced, creating ideal conditions for the pressure regulation process. Meanwhile, the smaller space for oxygen flow at the rear end improves the precision of airflow control and enhances the stability of oxygen delivery to the respiratory therapy equipment.

[0052] As a preferred example of this embodiment, the oxygen supply module further includes a gas output section located at the oxygen outlet 12. The gas output section has a gas receiving passage and a gas conveying passage. The gas receiving passage is at least partially located inside the base 1 and communicates with the third passage 133. The gas conveying passage is at least partially located outside the base 1, and the side furthest from the base 1 forms the oxygen outlet 12. A gas filter is provided in either the gas receiving passage or the gas conveying passage to purify the gas flowing through the gas output section. The gas filter provides a final purification and filtration process for the gas output downstream from the oxygen supply valve assembly, further removing any residual particulate matter, microorganisms, or other impurities in the gas, ensuring that the purity of the output gas meets the requirements of the final application.

[0053] Preferably, the gas filter element can be constructed as a filter cartridge, such as a high-efficiency particulate air filter for particulate matter, a sterilization filter for microorganisms, or a condensation filter for oil mist / water vapor.

[0054] Furthermore, the oxygen intake module also includes a pressure sensor and a flow sensor located at the oxygen outlet, used to dynamically monitor the pressure and flow rate of the gas output by the oxygen intake module.

[0055] As another preferred example under this embodiment, such as Figure 2 As shown, the first passage 131, the second passage 132, and the third passage 133 are located in the same plane. The first passage 131 is parallel to the third passage 133, and the second passage 132 is perpendicular to both the first passage 131 and the third passage 133. The oxygen inlet module also includes a connecting groove 16 that communicates with the monitoring port 15. The connecting groove 16 is parallel to the second passage 132 and perpendicular to the first passage 131 and the third passage 133.

[0056] Furthermore, the gas pressure regulating module has a pressure regulating passage connected to the first passage 131, and the gas flow control module has a flow regulating passage connected to the second passage 132. The pressure regulating passage and the first passage 131 are aligned on the same axis, and the flow regulating passage and the second passage 132 are aligned on the same axis.

[0057] Specifically, the first passage 131, the second passage 132, the third passage 133, the pressure regulating passage, and the flow regulating passage are all tubular structures. The diameter of the longitudinal section of the first passage 131 is D1, 3mm≤D1≤20mm; the diameter of the longitudinal section of the pressure regulating passage is D2, 3mm≤D2≤10mm; and the diameter of the longitudinal section of the flow regulating passage is D3, 1mm≤D2≤5mm.

[0058] As a preferred embodiment of this application, such as Figure 1 , Figure 2As shown, the base 1 is integrally formed, and the oxygen inlet 11 includes a high-pressure oxygen inlet 111 and a low-pressure oxygen inlet 112. The base 1 has a first oxygen delivery passage 17 and a second oxygen delivery passage 18. The first oxygen delivery passage 17 is connected to the gas pressure regulating module 2 and the gas flow control module 3 respectively. The high-pressure oxygen inlet 111 is connected to the oxygen outlet 12 through the first oxygen delivery passage 17, and the low-pressure oxygen inlet 112 is connected to the oxygen outlet 12 through the second oxygen delivery passage 18.

[0059] The one-piece molded base 1 significantly improves the structural strength of the base 1 while avoiding oxygen leakage caused by splicing gaps, thereby improving the sealing performance of the oxygen intake module in vibration environments. Simultaneously, the one-piece molded base 1 reduces the assembly pressure of the oxygen intake module, helping to increase the assembly speed. The design of the first oxygen delivery passage 17 and the second oxygen delivery passage 18 enhances the adaptability of the oxygen intake module to different oxygen production needs. When the respiratory therapy equipment requires rapid oxygen delivery, high-pressure oxygen can be delivered to the first oxygen delivery passage 17 through the high-pressure oxygen inlet 111 to quickly provide the required large amount of oxygen to the respiratory therapy equipment, suitable for emergency resuscitation and other environments. The low-pressure oxygen inlet 112 is more suitable for respiratory therapy equipment in daily use. The design of the first oxygen delivery passage 17 and the second oxygen delivery passage 18 also provides a safety redundancy design for the oxygen intake module. If one of the first oxygen delivery passage 17 or the second oxygen delivery passage 18 malfunctions or becomes blocked, the other can still maintain the oxygen delivery capacity of the oxygen intake module, optimizing the structural design of the oxygen intake module.

[0060] Preferably, a high-pressure gas connector is provided at the high-pressure oxygen inlet 111. One end of the high-pressure gas connector is connected to the first oxygen delivery passage 17, and the other end is exposed on the base 1 and used to connect to an external high-pressure gas source. The external high-pressure gas source delivers high-pressure gas to the first oxygen delivery passage 17 through the high-pressure gas connector.

[0061] Furthermore, a high-pressure check valve is provided in the first oxygen supply passage 17. The valve plate of the high-pressure check valve opens when the pressure is higher than the first preset pressure value, so that the high-pressure gas supplied by the external high-pressure gas source can enter the first oxygen supply passage 17 through the valve port of the high-pressure check valve. The valve plate of the high-pressure check valve is constructed to close when the gas in the first oxygen supply passage 17 backflushs towards the high-pressure gas connector, so as to seal the first oxygen supply passage 17 and effectively ensure the airtightness and pressure stability of the first oxygen supply passage 17.

[0062] Furthermore, a first filter element is provided in the first oxygen supply passage 17 to filter particulate contaminants, moisture, oil mist, or other impurities that may be carried in the high-pressure gas within the first oxygen supply passage 17. This provides a stable working environment for the internal components of the oxygen intake module. Preferably, the first filter element is located upstream of the high-pressure check valve, so that the gas has already been filtered when passing through the high-pressure check valve, reducing the probability that impurities in the gas will adversely affect the high-pressure check valve.

[0063] Preferably, a low-pressure gas connector is provided at the low-pressure oxygen inlet 112. One end of the low-pressure gas connector is connected to the second oxygen supply passage 18, and the other end is exposed on the base 1 and used to connect to an external low-pressure gas source. The external low-pressure gas source supplies low-pressure gas to the second oxygen supply passage 18 through the low-pressure gas connector.

[0064] Furthermore, a low-pressure check valve is provided in the second oxygen supply passage 18. The valve plate of the low-pressure check valve opens when the pressure is higher than the second preset pressure value, so that the low-pressure gas supplied by the external low-pressure gas source can enter the second oxygen supply passage 18 through the valve port of the low-pressure check valve. The valve plate of the low-pressure check valve is constructed to close when the gas in the second oxygen supply passage 18 backflushs towards the low-pressure gas connector, so as to seal the second oxygen supply passage 18 and effectively ensure the airtightness and pressure stability of the second oxygen supply passage 18.

[0065] Furthermore, a second filter element is provided in the second oxygen supply passage 18 to filter particulate contaminants, moisture, oil mist, or other impurities that may be carried in the low-pressure gas within the second oxygen supply passage 18. This provides a stable working environment for the internal components of the oxygen intake module. Preferably, the second filter element is located upstream of the low-pressure check valve, so that the gas is filtered before passing through the check valve, reducing the probability that impurities in the gas will adversely affect the check valve.

[0066] In this embodiment, the high-pressure oxygen inlet 111 is connected to the gas pressure regulating module 2, which regulates the pressure of the high-pressure gas to reduce the pressure to the target pressure value. Preferably, the gas pressure regulating module 2 includes a first inlet and a first outlet. The first inlet is connected to the high-pressure oxygen inlet 111, and the first outlet is used to output the depressurized gas.

[0067] This embodiment does not limit the connecting component of the first outlet, and it can be any of the following examples: Example 1: The first outlet is connected to the downstream gas flow control module 3, and the depressurized gas is directly delivered to the gas flow control module 3. The gas continues to move after being regulated by the gas flow control module 3.

[0068] Example 2: The oxygen inlet module is also equipped with a secondary pressure control module located downstream of the gas pressure regulation module 2. The first outlet is connected to the secondary pressure control module, so that the gas pressure is regulated again in the secondary pressure control module to ensure that the gas pressure delivered to the subsequent modules is stable.

[0069] Specifically, the gas pressure regulating module 2 can be configured to include a pressure reducing valve, a pressure sensor, and a first control unit. The pressure sensor is located at the first outlet or downstream of the first outlet and is used to detect the gas pressure value flowing out of the first outlet and transmit the gas pressure value to the first control unit. The first control unit adjusts the valve opening of the pressure reducing valve according to the relationship between the gas pressure value and the target pressure value, so that the gas pressure value delivered out through the first outlet is as close as possible to the target pressure value.

[0070] In a preferred embodiment, the gas flow control module 3 is located downstream of the gas pressure regulating module 2, and has a second inlet and a second outlet. The second inlet is connected to the gas pressure regulating module 2 to receive gas after pressure regulation by the gas pressure regulating module 2. Gas enters the gas flow control module 3 through the second inlet, and the gas flow control module 3 adjusts the gas output according to a preset flow rate requirement, and outputs the gas through the second outlet. Specifically, the gas flow control module 3 includes an electromagnetic proportional valve, a flow sensor, and a second control unit. The flow sensor is located at the second outlet or downstream of the second outlet to monitor the gas flow rate value delivered from the second outlet and transmit the gas flow rate value to the second control unit. The second control unit compares the gas flow rate value with a preset flow rate value and controls the opening degree of the electromagnetic proportional valve according to the comparison result, so that the gas flow rate delivered from the second outlet approaches the preset flow rate value.

[0071] The gas flow control module 3 may not use an electromagnetic proportional valve. In other examples, a mass flow controller or other valves or devices that can achieve precise flow regulation may be used.

[0072] As a preferred embodiment of this application, such as Figure 2 , Figure 3 As shown, the oxygen supply passage 13 includes a first passage 131 that connects the oxygen inlet 11 to the gas pressure regulating module 2. The oxygen supply module also includes a filter 6 disposed in the first passage 131. The base 1 includes a seat 19 and an oxygen supply assembly. The oxygen supply assembly includes an oxygen supply pipe 7 that is detachably connected to the seat 19. The oxygen inlet 11 is located at the end of the oxygen supply pipe 7. The oxygen supply pipe 7 and the seat 19 cooperate to form the first passage 131. The filter 6 is installed in the oxygen supply pipe 7.

[0073] The filter element 6 located inside the oxygen inlet pipe 7 can effectively intercept particulate matter and impurities in the pipeline, improve oxygen quality, and reduce the impact of impurities in the oxygen on precision components such as the downstream gas pressure regulation module 2 and gas flow control module 3, thus helping to extend the service life of the oxygen inlet module. Furthermore, designing the oxygen inlet pipe 7 as detachably connected to the base 19 facilitates maintenance or replacement after disassembly, reducing the difficulty of maintaining the oxygen inlet module.

[0074] As a preferred embodiment of this implementation, such as Figure 4 As shown, the oxygen inlet pipe 7 and the base 1 cooperate to form a limiting groove 8. The filter element 6 has a snap-fit ​​ring edge 61 at its end. The filter element 6 is installed on the oxygen inlet pipe 7 through the snap-fit ​​engagement of the snap-fit ​​ring edge 61 and the limiting groove 8.

[0075] The design of the limiting groove 8 and the snap-fit ​​ring edge 61 reduces the difficulty of fixing the filter element 6, eliminating the need to set up a separate installation structure for the filter element 6, and helps to optimize the structural design of the oxygen inlet module. In addition, when repairing or replacing the filter element 6, it is only necessary to remove the oxygen inlet pipe 7 and the base 1 to unlock the filter element 6, reducing the difficulty of disassembling and assembling the filter element 6.

[0076] As another preferred embodiment of this implementation, such as Figure 5 As shown, the base 1 includes an oxygen outlet assembly 9, which includes an oxygen outlet pipe 91 and a fixing plate 92. One end of the oxygen outlet pipe 91 extends into the base body 19, and a snap-fit ​​groove 911 is provided on the periphery of the oxygen outlet pipe 91. One end of the fixing plate 92 extends into the snap-fit ​​groove 911, and the other end is fixed to the base body 19.

[0077] The engagement of the snap-fit ​​groove 911 and the fixing plate 92 ensures a secure connection of the oxygen outlet pipe 91. The portion of the oxygen outlet pipe 91 extending into the seat 19 connects to the oxygen delivery passage 13 and also serves to position the pipe, demonstrating a high degree of functional integration. The fixing plate 92 provides additional radial constraint to the oxygen outlet pipe 91, improving its installation stability and vibration and impact resistance. From a maintenance convenience perspective, the modular design of the oxygen outlet assembly 9 enhances the ease of disassembly and assembly of the oxygen outlet pipe 91. When maintenance is required, simply remove the fixing plate 92 and pull out the pipe, improving the user experience.

[0078] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0079] 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.

[0080] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An oxygen supply module for a respiratory therapy device, comprising a base, and a gas pressure regulating module and a gas flow control module disposed on the base, wherein the base has an oxygen inlet and an oxygen outlet, and the base further comprises an oxygen delivery path sequentially connecting the oxygen inlet, the gas pressure regulating module, the gas flow control module, and the oxygen outlet, characterized in that, The oxygen supply module also includes a sensor assembly for monitoring oxygen parameters in the oxygen supply path. The base has a mounting position at the bottom or side, and the sensor assembly is mounted on the mounting position via a mounting bracket. The base has a monitoring port that communicates with the oxygen delivery path, and the parameter acquisition unit of the sensor assembly is connected to the oxygen delivery path through the monitoring port.

2. The oxygen supply module according to claim 1, characterized in that, The sensor assembly includes a circuit board and a sensor body mounted on the circuit board. The mounting component includes a plurality of spaced mounting posts. The circuit board has mounting holes. Each mounting post includes a fixing part fixedly connected to a base and a support part detachably connected to the fixing part. The support part passes through the mounting holes and clamps the circuit board between the fixing part and the support part.

3. The oxygen supply module according to claim 1, characterized in that, The base is also provided with a connecting groove that connects the monitoring port to the oxygen supply passage, and the parameter acquisition unit is at least partially located in the connecting groove.

4. The oxygen supply module according to claim 3, characterized in that, The side wall of the connecting groove is provided with a sealing ring groove, and a sealing ring rib is provided in the sealing ring groove. The sealing ring rib abuts against the parameter acquisition unit and the inner wall of the sealing ring groove respectively.

5. The oxygen supply module according to claim 1, characterized in that, The oxygen delivery pathway includes a first pathway connecting the oxygen inlet to the gas pressure regulating module, and a second pathway connecting the gas pressure regulating module to the gas flow control module. The oxygen inlet and the gas pressure regulating module are located on opposite sides of the base, and the first pathway and the second pathway are arranged perpendicularly.

6. The oxygen supply module according to claim 5, characterized in that, The oxygen delivery pathway also includes a third pathway connecting the gas flow control module to the oxygen outlet. The average cross-sectional area of ​​the first pathway is S1, and the average cross-sectional area of ​​the third pathway is S2, where S1 ≥ 2.5S2.

7. The oxygen supply module according to claim 1, characterized in that, The base is integrally formed, and the oxygen inlet includes a high-pressure oxygen inlet and a low-pressure oxygen inlet. The base has a first oxygen delivery passage and a second oxygen delivery passage. The first oxygen delivery passage is connected to the gas pressure regulating module and the gas flow control module, respectively. The high-pressure oxygen inlet is connected to the oxygen outlet through the first oxygen delivery passage, and the low-pressure oxygen inlet is connected to the oxygen outlet through the second oxygen delivery passage.

8. The oxygen supply module according to claim 1, characterized in that, The oxygen delivery path includes a first path that connects the oxygen inlet to the gas pressure regulating module, and the oxygen inlet module further includes a filter element disposed in the first path; The base includes a base body and an oxygen inlet assembly. The oxygen inlet assembly includes an oxygen inlet pipe that is detachably connected to the base body. The oxygen inlet is located at the end of the oxygen inlet pipe. The oxygen inlet pipe and the base body cooperate to form the first passage. The filter element is installed inside the oxygen inlet pipe.

9. The oxygen supply module according to claim 8, characterized in that, The oxygen inlet pipe and the base cooperate to form a limiting groove. The filter element has a snap-fit ​​ring at its end. The filter element is installed on the oxygen inlet pipe by snap-fitting the snap-fit ​​ring with the limiting groove.

10. The oxygen supply module according to claim 8, characterized in that, The base includes an oxygen outlet assembly, which includes an oxygen outlet pipe and a fixing plate. One end of the oxygen outlet pipe extends into the base body, and a snap-fit ​​groove is formed on the periphery of the oxygen outlet pipe. One end of the fixing plate extends into the snap-fit ​​groove, and the other end is fixed to the base body.

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