Respiration detection device

Abstract

The embodiment of the application provides a kind of respiratory detection equipment, including shell, first gas path and second gas path are in shell, the two ends of first gas path are respectively communicated with the air inlet and air outlet on shell, second gas path is communicated with first gas path, first gas detection module is arranged in first gas path to detect the gas volume of gas, second gas path is communicated with second gas detection module, to detect the content of component gas contained in gas.It also includes adjusting piece, adjusting piece is in first position, the shielding part of adjusting piece shields air outlet, the gas exhaled by user can be introduced into second gas detection module, to realize the function of component gas content detection in exhaled gas.Adjusting piece is in second position, the first through opening part of adjusting piece is communicated with air outlet, and the exhaled gas can be discharged from air outlet, to realize the function of vital capacity detection, enrich the function of respiratory detection equipment, it is conducive to realizing multifunctional integration, satisfy the demand of respiratory system function detection at home.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to a respiratory detection device. Background Technology

[0002] With rapid economic development and industrialization, as well as changes in people's lifestyles, the prevalence of respiratory diseases in my country is showing a rapid upward trend. Respiratory diseases (such as pneumonia, asthma, COPD, etc.) have become a source of harm to people's health. Based on the guidelines for the diagnosis and treatment of respiratory diseases, respiratory system tests suitable for home use include vital capacity, nitric oxide concentration in exhaled breath, and pulmonary function training. Home-use portable devices for respiratory system testing have also gradually received widespread attention.

[0003] Common home-use respiratory testing devices are often standalone devices. For example, nitric oxide meters are only suitable for detecting the concentration of fenestrated exhaled nitric oxide (FeNO) under low-flow exhalation conditions, thus aiding in the screening and detection of airway inflammation. Spirometers can only detect the flow rate of exhaled air under transient high-flow exhalation conditions, thus monitoring lung capacity for auxiliary screening of conditions such as pneumonia. Lung function trainers are only suitable for training the user's breathing to enhance respiratory muscle strength and endurance, improving respiratory system performance. Because respiratory testing devices are relatively limited in function and applicable to a few scenarios, they do not adequately meet the multifunctional needs of people seeking home-based auxiliary screening. Summary of the Invention

[0004] This application provides a respiratory testing device that solves the problem that existing respiratory testing devices have relatively limited functions and cannot meet people's pursuit of multifunctional home-based assisted screening.

[0005] The first aspect of this application provides a respiratory detection device, including a housing with an air inlet and an air outlet. The housing contains a first air passage and a second air passage. A first end of the first air passage is connected to the air inlet, and a second end of the first air passage is connected to the air outlet. The first end of the second air passage is connected to the first air passage, and the diameter of the first end of the second air passage is smaller than the diameter of the air inlet. That is, gas entering the respiratory detection device from the air inlet can either flow into the first air passage or flow through the first air passage into the second air passage.

[0006] It also includes a first gas detection module and a second gas detection module located within the housing. The first gas detection module is disposed in the first gas path and is configured to detect the volume of gas entering from the air inlet for the purpose of detecting vital capacity. The second gas detection module is connected to the second gas path and is configured to detect the content of component gases in the gas for the purpose of detecting the content of component gases contained in the gas. The first and second gas detection modules can also be referred to as a first gas detection module and a second gas detection module assembly, and are physical components used to perform functional testing.

[0007] It also includes an adjusting component, which is movably mounted on the housing and located at the second end of the first air passage. The adjusting component includes a blocking part and a first opening part. When the adjusting component is in the first position, the blocking part blocks the air outlet, so the gas in the first air passage cannot be discharged from the air outlet. The gas entering from the air inlet will then enter the second air passage and enter the second gas detection module. The second gas detection module can detect the content of component gases contained in the gas, thus realizing the function of the respiratory detection device in detecting the content of gas components in exhaled gas.

[0008] When the adjusting component is in the second position, the first inlet and outlet are connected to the first air passage, meaning the first air passage can be connected to the outside of the respiratory detection device through the outlet and the first inlet. A transient, high-flow-rate gas enters the first air passage through the inlet of the nozzle and can be directly discharged to the outside of the respiratory detection device through the outlet connected to the first air passage. This allows the airflow to flow unimpeded within the first air passage. The first gas detection module can detect the volume of exhaled gas within the first air passage, thus enabling the respiratory detection device to detect lung capacity.

[0009] In other words, by adjusting the position of the adjusting component, the flow direction of the gas entering the respiratory testing device can be adjusted, so that it can be introduced into the first airway to realize the detection of vital capacity, or into the second airway to realize the detection of the component gas content in the exhaled gas. This enriches the functions of the respiratory testing device, helps to integrate the functions of the respiratory testing device, supports home screening of various respiratory diseases, and helps to meet people's needs for respiratory system function testing.

[0010] In one possible implementation, the adjusting component further includes a second inlet, the diameter of which is smaller than that of the first inlet. When the adjusting component is in the third position, the second inlet, the air outlet, and the first air passage are connected. The smaller diameter of the second inlet creates resistance to gas flow, requiring the user to resist the damping effect of the second inlet during exhalation and inhalation. This trains the user's breathing process, achieving the goal of training the respiratory system, thus enabling the respiratory testing device to perform respiratory system training. This further enriches the functionality of the respiratory testing device, enabling it to at least perform lung capacity testing, exhaled gas composition testing, and respiratory system training, achieving a multi-functional integrated architecture that meets the needs of home-based respiratory function testing.

[0011] In one possible implementation, there are multiple second inlets with different diameters. When different diameter second inlets are connected to the air outlet, they generate different degrees of damping during inhalation or exhalation, thus providing different damping levels for the user's respiratory system training and enabling different training intensities to enhance the effectiveness of respiratory system training.

[0012] In one possible implementation, the adjusting member is rotatably mounted on the housing. When the adjusting member is in the first position, the blocking portion faces the air outlet, thereby blocking the air outlet. When the adjusting member is in the second position, the first through portion faces the air outlet, thereby communicating with the air outlet. When the adjusting member is in the third position, the second through portion faces the air outlet, thereby communicating with the air outlet.

[0013] In one possible implementation, the housing includes an air nozzle, a main housing, and an assembly. The air nozzle is connected to a first end of the main housing, the assembly is disposed on a second end of the main housing, an adjusting member is movably disposed on the assembly, a first air passage and a second air passage are disposed inside the main housing, an air inlet is formed on the air nozzle, and an air outlet is formed on the assembly.

[0014] In one possible implementation, a first pipe fitting and a second pipe fitting are also disposed within the main housing, and a first gas detection module is disposed on the first pipe fitting.

[0015] An air nozzle is disposed on the first end of the first pipe component and communicates with the first pipe component to form a first air passage extending in a first direction. An assembly is connected to the second end of the first pipe component, and the second pipe component communicates with the first pipe component, having a second air passage extending in a second direction within it. Utilizing the first and second pipe components to respectively form the first and second air passages facilitates the assembly of various structural components within the housing, such as the first gas detection module and the second gas detection module, making implementation easier.

[0016] In one possible implementation, the first direction is perpendicular to the second direction, meaning there is a right-angle turn between the second and first air passages. This right-angle turn creates a damping effect on the gas flow. On one hand, when the adjusting element is in the first position to detect the gas component content in exhaled breath, it helps reduce the flow rate of gas entering the second air passage, thus improving detection accuracy.

[0017] On the other hand, when the adjusting element is in the second or third position, it is beneficial to allow the gas to be discharged directly from the outlet along the first gas path, rather than flowing to the second gas path, which also helps to improve the accuracy of the detection.

[0018] In one possible implementation, the second gas detection module includes a detection unit and a micro-pump. The two ends of the micro-pump are connected to the second gas path and the detection unit, respectively. The micro-pump is configured to control the amount of gas entering the detection unit. The micro-pump allows for precise control of the amount of gas entering the detection unit, ensuring that only a specific amount of gas enters the unit for detecting the content of its constituent gases, thus improving the accuracy of component gas content detection.

[0019] In addition, detecting only a certain amount of gas helps reduce the size of the detection unit itself, which is conducive to miniaturizing the entire respiratory detection device and improving its convenience.

[0020] In one possible implementation, the second gas detection module includes a detection unit and a micro air pump connected to the detection unit, the micro air pump being configured to control the amount of gas entering the detection unit.

[0021] In one possible implementation, a ventilation branch located within the housing is also included. The housing has an exhaust port, and the ventilation branch is connected to both the second air passage and the exhaust port. That is, the second air passage can be directly connected to the outside of the respiratory detection device through the ventilation branch. Without affecting the detection unit's ability to detect the component gas content of exhaled gas, this allows some gas to be discharged more smoothly from the ventilation branch, facilitating user exhalation and improving the user experience of the respiratory detection device.

[0022] In one possible implementation, a constant flow device located within the housing is also included. The second gas path is connected to the constant flow device, which is in turn connected to the second gas detection module. The constant flow device is configured to control the flow rate of gas entering the second gas detection module. The constant flow device can be a pressure-dependent device. By controlling the flow rate of gas entering the second gas detection module, the user's requirements for controlling the airflow of exhaled breath are reduced, the detection difficulty is lowered, and the user experience of the respiratory detection device is improved.

[0023] In one possible implementation, a filter element is also included within the housing, positioned between the second gas path and the second gas detection module. This filter element can perform dehumidification and sterilization functions, thereby reducing or preventing the impact or damage caused by high humidity gases or bacteria in the gas on the detection unit and the micro-pump, thus helping to improve the accuracy of the second gas detection module and extend its lifespan.

[0024] In one possible implementation, the main housing includes a gripping part and a control part, a first pipe component is disposed inside the control part, an air nozzle is connected to the first end of the control part, and an assembly is disposed on the second end of the control part.

[0025] The second piping component and the second gas detection module are both housed within the grip. The control unit is connected to the grip, and the control unit and grip form an inclined angle of 90° or greater. This design facilitates the inclined arrangement of the first air passage within the control unit and the second air passage within the grip. Furthermore, it allows users to easily align their mouths with the air nozzle when holding the grip for testing or training, thus improving the user experience of the respiratory detection device.

[0026] In one possible implementation, the second gas detection module is located on one side of the first pipe along the second direction. That is, the location of the second gas detection module occupies the space of the first pipe along the second direction. This makes reasonable use of the space inside the main shell, improves the integration of the various modules in the respiratory detection device, and helps to reduce the size of the respiratory detection device and improve its portability.

[0027] In one possible implementation, the cross-sectional shape of the main shell along the first plane includes a T-shape or an L-shape;

[0028] The cross-sectional shape of the main shell along the second plane includes an O-shape, the first plane is parallel to the first direction and the second direction, and the second plane is perpendicular to the first plane.

[0029] In one possible implementation, at least part of the adjusting member extends outside the assembly, which allows the user to rotate the adjusting member to switch between the first, second, and third positions, enabling the respiratory detection device to perform different functions.

[0030] In one possible implementation, the circumferential sidewall of the adjusting member has a raised operating part, which increases the roughness of the outer circumferential surface of the adjusting member, further facilitating the user to rotate the adjusting member and helping to improve the user experience of the respiratory detection device.

[0031] In one possible implementation, the adjusting component is located within the assembly, which also includes a rotating component located on the side of the assembly facing away from the air inlet, i.e., on the outer side of the entire assembly, outside the housing. The rotating component is connected to the adjusting component and is rotatably mounted on the assembly. Rotating the rotating component allows the adjusting component to rotate, enabling the adjusting component to move and switch between a first, second, and third position, allowing the respiratory detection device to perform different functions. This facilitates user operation and improves the user experience of the respiratory detection device.

[0032] In one possible implementation, the component gas includes at least one or more of nitric oxide, carbon monoxide, hydrogen, and volatile organic gases.

[0033] The second aspect of this application provides a respiratory detection device, including a housing, an air inlet and an air outlet on the housing, a first air passage inside the housing, a first end of the first air passage communicating with the air inlet, and a second end of the first air passage communicating with the air outlet.

[0034] It also includes a first gas detection module located inside the housing, the first gas detection module is set in the first gas path, and the first gas detection module is configured to detect the amount of gas entering from the air inlet.

[0035] It also includes an adjusting component, which is movably mounted on the housing and located at the second end of the first air passage. The adjusting component includes a first inlet and a second inlet, with the diameter of the second inlet being smaller than that of the first inlet. When the adjusting component is in the second position, the first inlet and the outlet are connected to the first air passage, and gas enters the first air passage from the inlet and is directly discharged from the outlet. The first gas detection module can detect the gas volume to realize the function of lung capacity detection in the respiratory detection device.

[0036] When the adjusting component is in the third position, the second port and the outlet are connected to the first air passage. Gas enters the first air passage and exits through the outlet and the second port. The small-diameter second port can create resistance to gas flow, thereby training the user's breathing process and enabling the respiratory detection device to perform respiratory system training. Enriching the functions of the respiratory detection device contributes to its multi-functional integration.

[0037] In one possible implementation, the housing also has a second air passage, the first end of which is connected to the first air passage, and the diameter of the first end of the second air passage is smaller than the diameter of the air inlet.

[0038] It also includes a second gas detection module located inside the housing, which is connected to the second gas path and is configured to detect the content of component gases in the gas.

[0039] The adjusting component also includes a blocking part. When the adjusting component is in the first position, the blocking part blocks the air outlet, allowing the gas entering from the air inlet to pass into the second air path. The gas sequentially passes through the first air path and the second air path before entering the second gas detection module, thereby enabling the respiratory detection device to detect the content of gas components in exhaled gas. Further enriching the functionality of the respiratory detection device helps to achieve a multi-functional integrated architecture, enabling it to meet the needs of home-based respiratory system function testing.

[0040] The third aspect of this application provides a respiratory detection device, including a housing with an air inlet and an air outlet, and a first air passage and a second air passage inside the housing. The first end of the first air passage is connected to the air inlet, the second end of the first air passage is connected to the air outlet, the first end of the second air passage is connected to the first air passage, and the diameter of the first end of the second air passage is smaller than the diameter of the air inlet.

[0041] It also includes a first gas detection module and a second gas detection module located inside the housing. The first gas detection module is set in the first gas path and is configured to detect the amount of gas entering from the gas inlet. The second gas detection module is connected to the second gas path and is configured to detect the content of component gases in the gas.

[0042] It also includes an adjusting component, which is movably mounted on the housing and located at the second end of the first air passage. The adjusting component includes a blocking part and a second opening part. The diameter of the second opening part is smaller than the diameter of the air outlet. When the adjusting component is in the first position, the blocking part blocks the air outlet, allowing the gas entering from the air inlet to flow into the second air passage. The gas sequentially passes through the first air passage and the second air passage and enters the second gas detection module to realize the function of the respiratory detection device in detecting the content of gas components in exhaled gas.

[0043] When the adjusting component is in the third position, the second inlet and the outlet are connected to the first air passage. Gas enters the first air passage and exits through the outlet and the second inlet, enabling the respiratory testing device to perform respiratory system training. Enriching the functions of the respiratory testing device contributes to its multi-functional integration.

[0044] In one possible implementation, the adjusting member further includes a first port portion, the diameter of which is larger than the diameter of the second port portion.

[0045] When the adjusting component is in the second position, the first inlet and outlet are connected to the first air passage. Gas enters the first air passage from the inlet and is directly discharged from the outlet. The first gas detection module can detect the gas volume to realize the function of lung capacity detection of the respiratory detection device, further enriching the function of the respiratory detection device and helping to realize a multi-functional integrated architecture. Attached Figure Description

[0046] Figure 1 This is a schematic diagram illustrating a usage scenario of a respiratory detection device provided in an embodiment of this application;

[0047] Figure 2 This is a schematic diagram of the structure of a respiratory detection device provided in an embodiment of this application;

[0048] Figure 3 This is a cross-sectional structural diagram of a respiratory detection device provided in an embodiment of this application;

[0049] Figure 4 This is a schematic diagram of the internal structure of a respiratory detection device provided in an embodiment of this application;

[0050] Figure 5 This is a partially disassembled structural diagram of a respiratory detection device provided in an embodiment of this application;

[0051] Figure 6 A schematic diagram of the flow direction of the first and second air paths in a respiratory detection device provided in an embodiment of this application;

[0052] Figure 7 This is an enlarged cross-sectional view of a respiratory detection device provided in an embodiment of this application.

[0053] Figure 8 This is a schematic diagram of the structure of an adjusting component in a respiratory detection device provided in an embodiment of this application;

[0054] Figure 9 This is a partial structural diagram of a respiratory detection device in the first position, provided by an embodiment of this application.

[0055] Figure 10 This is a partial cross-sectional structural diagram of a respiratory detection device in the first position, provided in an embodiment of this application.

[0056] Figure 11 This is a partial structural diagram of a respiratory detection device in the second position, provided in an embodiment of this application.

[0057] Figure 12 This is a partial cross-sectional structural diagram of a respiratory detection device in the second position, provided in an embodiment of this application.

[0058] Figure 13 This is a partial structural diagram of a respiratory detection device in the third position, provided in an embodiment of this application.

[0059] Figure 14This is a partial cross-sectional structural diagram of a respiratory detection device in the third position, provided in an embodiment of this application.

[0060] Figure 15 This is a top cross-sectional view of a respiratory detection device provided in an embodiment of this application;

[0061] Figure 16 This is a schematic diagram of another internal partial structure of a respiratory detection device provided in an embodiment of this application;

[0062] Figure 17 This is a top cross-sectional view of another respiratory detection device provided in an embodiment of this application;

[0063] Figure 18 This is a schematic diagram of the working process of a respiratory detection device provided in an embodiment of this application;

[0064] Figure 19 This is a schematic diagram of another partially disassembled structure of a respiratory detection device provided in an embodiment of this application;

[0065] Figure 20 This is a schematic diagram of the structure of another respiratory detection device provided in the embodiments of this application;

[0066] Figure 21 This is a schematic diagram of the structure of another respiratory detection device provided in the embodiments of this application;

[0067] Figure 22 This is a partial structural schematic diagram of another respiratory detection device provided in an embodiment of this application;

[0068] Figure 23 This is a schematic diagram of the internal structure of another respiratory detection device provided in an embodiment of this application;

[0069] Figure 24 This is a cross-sectional structural schematic diagram of another respiratory detection device provided in an embodiment of this application;

[0070] Figure 25 This is a partial structural breakdown diagram of another respiratory detection device provided in an embodiment of this application.

[0071] Explanation of reference numerals in the attached figures:

[0072] 100 - Respiratory detection device; 10 - Housing; 11 - Nozzle;

[0073] 111 - Air intake; 112 - First straight section; 113 - Second straight section;

[0074] 114 - Arc-shaped part; 12 - Main shell; 121 - Grip part;

[0075] 122-Control unit; 13-Assembly parts; 131-Air outlet;

[0076] 14-First pipe fitting; 15-Second pipe fitting; 16-Shell cover;

[0077] 17 - Tail shell; 20 - First air passage; 30 - Second air passage;

[0078] 40 - First gas detection module; 50 - Second gas detection module; 51 - Detection unit;

[0079] 52 - Miniature air pump; 60 - Adjustable component; 61 - Shielding part;

[0080] 62-First opening section; 63-Second opening section; 64-Operating section;

[0081] 70 - Constant current device; 80 - Filter element; 110 - Control circuit board;

[0082] 120 - Limiting component; 130 - Rotating component; 160 - Ventilation branch. Detailed Implementation

[0083] The terminology used in the implementation section of this application is for the purpose of explaining specific embodiments of this application only, and is not intended to limit this application.

[0084] With the continuous development of the economy and the ecological environment, the prevalence of respiratory diseases is rapidly increasing. Diseases such as chronic obstructive pulmonary disease (COPD), bronchial asthma, and viral pneumonia have become major threats to people's health. Home-based testing for respiratory health is gradually gaining widespread attention. Based on guidelines for the diagnosis and treatment of respiratory diseases, suitable home-based respiratory function tests mainly include vital capacity, expiratory nitric oxide concentration, and pulmonary function training.

[0085] For example, chronic obstructive pulmonary disease (COPD) is a common, preventable, and treatable disease characterized by persistent airflow limitation. This airflow limitation progressively develops and is associated with an enhanced chronic inflammatory response of the airways and lungs to toxic particles or gases. Vital capacity, on the other hand, refers to the volume of air that can be exhaled after a maximal inhalation. Measuring vital capacity can serve as an auxiliary screening method for COPD, enabling the detection of this type of disease.

[0086] Bronchial asthma is a heterogeneous disease characterized by chronic airway inflammation involving multiple cells (such as eosinophils, mast cells, T lymphocytes, neutrophils, and airway epithelial cells) and cellular components. This chronic inflammation is associated with airway hyperresponsiveness, typically presenting as widespread and variable reversible expiratory airflow limitation, leading to recurrent episodes of wheezing, shortness of breath, chest tightness, and / or cough, with intensity varying over time. Attacks often occur and worsen at night and / or in the early morning. Most patients experience spontaneous remission or relief with treatment; however, if bronchial asthma is not diagnosed and treated promptly, irreversible airway narrowing and remodeling can occur with prolonged disease progression. Furthermore, in patients with airway inflammation, stimulation by inflammatory cytokines leads to increased expression of airway-inducible nitric oxide (NO) synthase, resulting in sustained production of nitric oxide, which is rarely expressed in healthy individuals. Therefore, exhaled nitric oxide (FENO) can serve as a marker of airway inflammation, and by detecting the concentration of exhaled nitric oxide, it can be used as an auxiliary screening tool for airway inflammation, thus enabling the detection of such diseases.

[0087] Viral pneumonia is an inflammation of the lungs caused by upper respiratory tract viral infection that spreads downwards. It can occur in all seasons, but is most common in winter and spring, and can occur in outbreaks or sporadic epidemics. Clinical manifestations mainly include fever, headache, body aches, dry cough, and pulmonary infiltration. The occurrence of viral pneumonia is related to the virulence of the virus, the route of infection, and the age and immune status of the host; generally, the incidence rate is higher in children than in adults. Lung function training can increase the strength of inspiratory and expiratory muscles. During normal inhalation, the diaphragm and external intercostal muscles contract. Forceful inhalation requires the assistance of accessory inspiratory muscles, such as the trapezius and scalene muscles. The result of these contractions is that the chest rises, expanding the thoracic cavity to its maximum capacity. Therefore, home-based lung function training can adopt the basic principle of resistance training, that is, increasing damping during inhalation, requiring the user to exert effort to resist this damping, thereby increasing inspiratory muscle strength and increasing respiratory muscle strength and endurance. Correspondingly, during exhalation, the pressure inside the lungs exceeds atmospheric pressure. Normal exhalation does not produce muscle contraction. When a person exhales forcefully, the internal intercostal muscles and abdominal muscles begin to contract, increasing the pressure inside the lungs to its maximum, allowing a large amount of carbon dioxide to be exhaled. The vibration during this process easily loosens phlegm that is stuck and accumulated on the respiratory tract walls, guiding the phlegm to the throat, where it is then coughed up. Therefore, having users exert effort to resist the damping during exhalation can also achieve the purpose of training the respiratory system, improving the immune function of the respiratory system, and helping to reduce the chance of contracting viral pneumonia.

[0088] However, current portable devices for respiratory system performance testing, such as nitric oxide meters for measuring exhaled nitric oxide concentration, spirometers for measuring lung capacity, and pulmonary function training devices for respiratory training purposes, are all single-function devices. These standalone devices are applicable to limited testing scenarios and cannot meet people's needs for respiratory system function testing and training. Therefore, there is an urgent need for a multifunctional respiratory system testing device to support home-based screening and training for various respiratory diseases.

[0089] Furthermore, since exhaled nitric oxide is produced by respiratory epithelial cells, primarily originating from the airways, and synthesized by nitric oxide synthase, after excluding the influence of nasal nitric oxide, the nitric oxide in the respiratory tract mainly originates from the lower respiratory tract. To ensure the accuracy of exhaled nitric oxide concentration detection, nitric oxide detection requires a continuous low-flow-rate (e.g., 3 L / min to 12 L / min) exhalation, for example, by continuously inhaling a low-flow-rate gas into a nitric oxide detector. In contrast, vital capacity detection requires a transient high-flow-rate (e.g., 60 L / min to 800 L / min) airflow, for example, by forcefully exhaling after a maximal inhalation into a spirometer. These two requirements for exhaled gas flow are contradictory, making it extremely difficult to achieve the goal of a multifunctional integrated detection device.

[0090] Based on this, this application provides a respiratory testing device for detecting and training respiratory system function, particularly suitable for home-based detection and training of respiratory health. It is a multi-functional portable device that can detect components of exhaled gases, including vital capacity and exhaled nitric oxide levels, thus aiding in the screening and detection of respiratory diseases. It can also provide respiratory training to improve lung function and enhance respiratory system capabilities, meeting people's multi-functional needs for respiratory testing devices.

[0091] Figure 1 This is a schematic diagram illustrating a usage scenario of a respiratory detection device provided in an embodiment of this application.

[0092] See Figure 1 As shown, the respiratory detection device 100 can be connected to a portable mobile terminal device 200 to transmit the detection data of the respiratory detection device 100 to the terminal device 200 for display, storage and analysis. The portable mobile terminal device 200 can be a mobile phone, tablet computer, laptop computer, netbook, wearable device, virtual reality device, etc.

[0093] The respiratory monitoring device 100 can also connect to other types of server devices 300, such as computer servers, or to a cloud server 400. Taking the connection between the respiratory monitoring device 100 and a mobile terminal device 200 as an example, it can be associated with an app 201 on the terminal device 200 to record, display, and analyze monitoring data. The terminal device 200 can also be associated with medical institutions such as hospitals 500 to share the monitoring data from the respiratory monitoring device 100, assisting medical institutions in monitoring users' respiratory system performance or in diagnosing and treating respiratory diseases.

[0094] The following description, in conjunction with the accompanying drawings, details a respiratory detection device provided in an embodiment of this application.

[0095] Figure 2 This is a schematic diagram of a respiratory detection device provided in an embodiment of this application.

[0096] See Figure 2 As shown, the respiratory detection device 100 includes a housing 10, which serves as the main support for the entire device. The housing 10 may contain an air passage (not shown in the figure), and an air inlet 111 and an air outlet 131 (see reference) may be provided at opposite ends of the housing 10. Figure 3 As shown, gas can enter the air passage of the housing 10 through the air inlet 111, and the gas in the air passage can also be discharged to the outside of the breathing detection device 100 through the air outlet 131.

[0097] Figure 3 This is a cross-sectional structural diagram of a respiratory detection device provided in an embodiment of this application.

[0098] See Figure 3 As shown, the air passage inside the housing 10 may include a first air passage 20 and a second air passage 30. The first air passage 20 may include a first end and a second end opposite to each other. The first end is the end adjacent to the air inlet 111 and can be used as the first end of the first air passage 20. The second end is the end adjacent to the air outlet 131 and can be used as the tail end of the first air passage 20. The air inlet 111 can be connected to the first end of the first air passage 20, and the gas entering from the air inlet 111 can be introduced into the first air passage 20.

[0099] The second end of the first air passage 20 can be connected to the air outlet 131, and the gas in the first air passage 20 can be discharged to the outside of the breathing detection device through the air outlet 131. The air outlet 131 can be a through hole opened on the housing 10, or it can be a through hole opened on other structural components of the housing 10, as long as it can be connected to the first air passage 20, so that the gas can be discharged.

[0100] The first end of the second air passage 30 is adjacent to the first air passage 20, and the second end of the second air passage 30 is opposite to the first end. The first end of the second air passage 30 can be connected to the first air passage 20, so that the gas entering through the air inlet 111 can pass through the first air passage 20 and then enter the second air passage 30. That is, the gas exhaled by the user can enter the first air passage 20 or the second air passage 30 through the air inlet 111.

[0101] Figure 4 This is a schematic diagram of the internal structure of a respiratory detection device provided in an embodiment of this application. Figure 5 This is a partial disassembled structural diagram of a respiratory detection device provided in an embodiment of this application.

[0102] Specifically, the first air passage 20 and the second air passage 30 can be formed in various ways. For example, the housing 10 can be a structural component with an internal cavity, and part of the cavity can form the first air passage 20 and part of the cavity can form the second air passage 30.

[0103] Alternatively, a pipe fitting with a cavity can be provided within the housing 10 to form the first air passage 20 and the second air passage 30, for example, see [reference needed]. Figure 4 As shown, the housing 10 may include an air nozzle 11, a main housing 12, and an assembly 13. A first pipe fitting 14 and a second pipe fitting 15 may be disposed within the main housing 12. The air nozzle 11 can be connected to the first end of the main housing 12. Specifically, the air nozzle 11 can be disposed on the first end of the first pipe fitting 14; for example, the air nozzle 11 can be sleeved inside the first end of the first pipe fitting 14. An air inlet 111 may be formed on the air nozzle 11. The air nozzle 11 can communicate with the first pipe fitting 14 to form a first air passage 20, with the extension direction of the first air passage 20 as the first direction (refer to...). Figure 3 (x direction in the middle).

[0104] Combination Figure 5 As shown, the fitting 13 can be disposed on the second end of the main housing 12. The fitting 13 can be connected to the second end of the first pipe fitting 14. An air outlet 131 can be formed on the fitting 13 so that the first air passage 20 communicates with the air outlet 131. A second air passage 30 can be formed inside the second pipe fitting 15, with the extension direction of the second air passage 30 as the second direction (refer to...). Figure 3 (in the y direction), the second pipe component 15 is connected to the first pipe component 14, so that the first air passage 20 and the second air passage 30 are connected.

[0105] The first pipe component 14 and the second pipe component 15 can be integrally formed. For example, the second pipe component 15 can be a branch structure formed on the first pipe component 14 during its formation. Of course, in some other examples, the second pipe component 15 and the first pipe component 14 can also be formed separately and then connected.

[0106] When using the breathing detection device 100, the user can place the nozzle 11 opposite the mouth and blow air toward the air inlet 111 of the nozzle 11, so that the gas enters the first air passage 20 or the second air passage 30 inside the housing 10 to detect the exhaled gas or achieve the purpose of breathing training.

[0107] The shape of the air nozzle 11 can be various. For example, the air nozzle 11 may include a first straight portion 112, a second straight portion 113, and an arc-shaped portion 114 (see reference). Figure 4 As shown), the first straight portion 112 and the second straight portion 113 can be parallel to each other. For example, the first straight portion 112 and the second straight portion 113 can be parallel along a third direction, which can be perpendicular to the first direction and the second direction.

[0108] The two ends of the first straight portion 112 and the second straight portion 113 are respectively connected by the arc-shaped portion 114 to form the nozzle 11. The first straight portion 112 and the second straight portion 113 can increase the length of the nozzle 11 in the third direction, which facilitates the entry of gas into the breathing detection device 100, and helps to reduce the volume of the nozzle 11 while improving the detection accuracy.

[0109] The diameter of the end of the nozzle 11 facing away from the housing 10 can be smaller than the diameter of the end of the nozzle 11 facing the housing 10. This facilitates user operation and ensures sufficient gas enters the air passage of the housing 10, guaranteeing the performance of the breathing detection device 100. For example, along the first direction, the diameter of the end of the nozzle 11 facing away from the housing 10 gradually decreases, allowing the cross-sectional shape of the end of the nozzle 11 facing away from the housing 10 to be a figure-eight shape.

[0110] Of course, in some other examples, the shape of the nozzle 11 can also be other shapes. For example, the nozzle 11 can be an elliptical ring, or it can be cylindrical. The shape and structure of the nozzle 11 are not limited in the embodiments of this application.

[0111] Combination Figure 4 and Figure 5 As shown, a first gas detection module 40 can be installed on the first air passage 20. Specifically, the first gas detection module 40 can be installed on the first pipe fitting 14. The first gas detection module 40 can detect the amount of gas entering the first air passage 20 from the air inlet 111, that is, it can detect the total amount of gas exhaled by the user into the breathing detection device 100.

[0112] Two opposing first gas detection modules 40 can be installed on the first pipe fitting 14 to detect the gas volume and ensure the accuracy of the detection.

[0113] Specifically, the first gas detection module 40 can detect the flow rate of the gas in the first gas path 20. For example, the first gas detection module 40 can be a gas flow sensor. The amount of gas entering the first gas path 20 can be obtained by detecting the flow rate through the first gas detection module 40.

[0114] Alternatively, the first gas detection module 40 can also detect the pressure difference of the gas in the first gas path 20. For example, the first gas detection module 40 can be a gas pressure sensor, and the amount of gas entering the first gas path 20 can be obtained by the pressure difference detected by the first gas detection module 40.

[0115] Of course, in some other examples, the first gas detection module 40 may also be other detection devices that can directly or indirectly obtain the amount of gas entering the first gas path 20.

[0116] Figure 6 This is a schematic diagram showing the flow direction of the first and second air paths in a respiratory detection device provided in an embodiment of this application.

[0117] See Figure 6 As shown in the diagram, the dotted line represents the gas flow direction. The user's exhaled air enters the first airway 20 through the air inlet 111 and is discharged to the outside of the respiratory detection device through the air outlet 131 connected to the first airway 20. During this process, the first gas detection module 40 can detect the amount of gas entering the first airway 20. For example, the user can exhale as much air as possible into the first airway 20, that is, the exhaled air is a transient high-flow airflow. The exhaled air passes through the first airway 20 and is discharged from the air outlet 131, so that the airflow in the first airway 20 flows without resistance. The first gas detection module 40 can detect the amount of exhaled air in the first airway 20, that is, it can detect the amount of air exhaled after maximum inhalation, thus realizing the detection of lung capacity.

[0118] A second gas detection module 50 is also provided inside the housing 10, see below. Figure 6 As shown, specifically, the second gas detection module 50 can be installed inside the main housing 12 and connected to the second pipe fitting 15 inside the main housing 12. The second end of the second gas passage 30 can be connected to the second gas detection module 50. Gas entering the second gas passage 30 can be introduced into the second gas detection module 50, and the second gas detection module 50 can detect the content of component gases included in the gas entering it.

[0119] Among them, see Figure 6 As shown, the second gas detection module 50 can be connected to the second pipe fitting 15 through the pipe connector 140, thereby connecting the second gas passage 30 with the second gas detection module 50.

[0120] The user's exhaled air can enter the first air passage 20 through the air inlet 111, and then enter the second air passage 30 through the first air passage 20. The second gas detection module 50 can detect the content of component gases in the exhaled air, thus realizing the content detection of the exhaled air composition. For example, taking the detection of nitric oxide content in exhaled air as an example, exhaling in a continuous low-flow manner into the air inlet 111, the air passes through the first air passage 20 and the second air passage 30 in sequence before entering the second gas detection module 50, which can then detect the nitric oxide content in the exhaled air.

[0121] The component gas can be nitric oxide, or it can be other types of component gases, such as other gases in human exhaled gas that can specifically respond to the function of the respiratory system, such as carbon monoxide, hydrogen, volatile organic compounds (VOCs), etc.

[0122] It should be noted that the second gas detection module 50 can be used to detect the content of only one component gas in the gas. For example, the second gas detection module 50 can be a nitric oxide detection module, capable of detecting the content (e.g., concentration) of nitric oxide in the gas. Alternatively, the second gas detection module 50 can also be used to detect the content of multiple component gases in the gas. For example, the second gas detection module 50 can be a structure composed of a nitric oxide detection module and a carbon monoxide detection module, capable of detecting the content of nitric oxide and carbon monoxide in the gas.

[0123] The gas entering the first airway 20 can pass through the second airway 30 and entirely enter the second gas detection module 50. The second gas detection module 50 directly detects the content of component gases contained in the volume of exhaled gas. Alternatively, only a portion of the exhaled gas can enter the second gas detection module 50, which detects the content of component gases contained in that portion of gas. Simultaneously, during exhalation, the first gas detection module 40 detects the volume of gas entering the first airway 20. By combining the volume of gas detected by the first gas detection module 40, the total content of component gases in the exhaled gas can be obtained. For example, the second gas detection module 50 can be a nitric oxide detection module. A portion of the exhaled gas volume enters the nitric oxide detection module through the second gas path 30. The nitric oxide detection module can detect the nitric oxide content in this portion of the gas volume. Meanwhile, the first gas detection module 40 can detect the total volume of exhaled gas entering the first gas path 20. Based on the total gas volume detected by the first gas detection module 40 and the nitric oxide content in the portion of gas volume detected by the nitric oxide detection module, the concentration of nitric oxide in the total volume of exhaled gas can be obtained, thus realizing the detection of nitric oxide content.

[0124] The respiratory detection device may also include a control circuit board 110 (see reference). Figure 5 The power supply module (not shown in the figure) can be electrically connected to the control circuit board 110 to supply power to the control circuit board 110. The power supply module can also be electrically connected to the first gas detection module 40 and the second gas detection module 50 to supply power to the first gas detection module 40 and the second gas detection module 50.

[0125] The control circuit board 110 can be a circuit board including a data processing unit, a data storage unit, etc. The first gas detection module 40 and the second gas detection module 50 can be connected to the control circuit board 110 respectively. The control circuit board 110 can control the first gas detection module 40 and the second gas detection module 50. The data information detected by the first gas detection module 40 and the second gas detection module 50 can be transmitted to the control module for further transmission, analysis, display, etc.

[0126] Figure 7 This is an enlarged cross-sectional view of a respiratory detection device provided in an embodiment of this application.

[0127] To enable the respiratory detection device 100 to perform the aforementioned detection functions, please refer to the following for details. Figure 7As shown, the respiratory detection device also includes an adjusting component 60, which is movably mounted on the housing 10. The adjusting component 60 is located at the second end of the first air passage 20, that is, at the end of the first air passage 20 adjacent to the air outlet 131. Specifically, the adjusting component 60 can be mounted on the assembly 13. The adjusting component 60 allows for the regulation of the gas flow direction, thereby enabling the functional adjustment of the respiratory detection device. This allows the device to perform the aforementioned lung capacity detection and exhaled gas composition detection, and also provides respiratory system training functions.

[0128] Figure 8 This is a schematic diagram of the structure of an adjustment component in a respiratory detection device provided in an embodiment of this application.

[0129] See Figure 8 As shown, the adjusting member 60 includes a blocking part 61, a first opening part 62, and a second opening part 63. The shapes of the first opening part 62 and the second opening part 63 can correspond to the shape of the air outlet 131. Specifically, the first opening part 62 and the second opening part 63 can be through holes opened on the adjusting member 60, while the blocking part 61 is an airtight structure.

[0130] The adjusting member 60 is movable relative to the housing 10, allowing it to be in different positions. In this embodiment, when the adjusting member 60 is in the first position, the respiratory detection device can detect the content of component gases in the gas. When the adjusting member 60 is in the second position, the respiratory detection device can detect lung capacity. When the adjusting member 60 is in the third position, the respiratory detection device can perform respiratory training. During the use of the respiratory detection device, moving the position of the adjusting member 60 allows the respiratory detection device to perform different functions.

[0131] The adjusting member 60 can be movably positioned on the housing 10 in various ways. For example, the adjusting member 60 can be rotatably mounted on the housing 10, or it can move linearly along the housing 10, or it can move in other regular or irregular manner on the housing 10, as long as it can achieve the switching of the adjusting member 60 between the first position, the second position, and the third position. In this embodiment, the example of the adjusting member 60 being rotatably mounted on the housing 10 will be used for explanation.

[0132] Figure 9 This is a partial structural diagram of a respiratory detection device provided in an embodiment of this application when the adjusting component is in the first position. Figure 10 This is a partial cross-sectional structural diagram of a respiratory detection device provided in an embodiment of this application when the adjusting component is in the first position.

[0133] See Figure 9As shown, the adjusting member 60 can be positioned on the side of the assembly 13 facing away from the air nozzle 11. When the adjusting member 60 is rotated to the first position, it engages with... Figure 10 As shown, the blocking part 61 of the adjusting member 60 is opposite to the air outlet 131 on the assembly 13. The blocking part 61 can block the air outlet 131, so the gas in the first air passage 20 cannot be discharged from the air outlet 131. In this way, the gas entering the first air passage 20 from the air inlet 111 of the nozzle 11 (the dotted line in the figure shows the gas flow direction) can enter the second air passage 30, which is connected to the first air passage 20, and then enter the second gas detection module 50 through the second air passage 30. The second gas detection module 50 can detect the content of component gases contained in the gas, realize the detection of the content of exhaled gas composition, that is, realize the function of the respiratory detection device to detect the content of gas components in exhaled gas.

[0134] For example, consider the use of a breathalyzer to detect the nitric oxide content in exhaled air. With the adjusting member 60 in the first position, the blocking part 61 is opposite to and blocks the air outlet 131. A small flow of breath can be continuously exhaled into the first air passage 20 through the air inlet 111. The exhaled air passes through the first air passage 20 and the second air passage 30 before entering the second gas detection module 50, which then detects the nitric oxide content in the exhaled air.

[0135] It should be noted that the breathing detection device may also include a prompt module (not shown in the figure) disposed on the housing 10. The control circuit board 110 can be connected to the prompt module, which can be used to issue reminder information. Specifically, the prompt module may be a voice module, a light-emitting module, etc.

[0136] The reminder information could be the flow rate of gas entering the first air passage 20 through the air inlet 111. For example, when using a breathalyzer to detect nitric oxide levels, the reminder module could indicate the current exhaled gas flow rate to remind the user whether the current exhalation flow rate meets the testing requirements, allowing the user to control their exhalation method. Alternatively, the reminder information could be other types of information, such as precautions during the testing process or filter replacement reminders.

[0137] Figure 11 This is a partial structural diagram of a respiratory detection device provided in an embodiment of this application when the adjusting component is in the second position. Figure 12 This is a partial cross-sectional structural diagram of a respiratory detection device provided in an embodiment of this application when the adjusting component is in the second position.

[0138] See Figure 11As shown, when the adjusting member 60 is rotated to the second position, the first opening 62 of the adjusting member 60 is opposite to the air outlet 131, and the two are engaged. Figure 12 As shown, the first inlet 62 is connected to the outlet 131, that is, the first air passage 20, the outlet 131, and the first inlet 62 are connected. The first air passage 20 can be connected to the outside of the respiratory detection device through the outlet 131 and the first inlet 62. The diameter of the first end of the second air passage 30 is smaller than the diameter of the inlet 111. In this way, a large flow of gas that is transiently released enters the first air passage 20 from the inlet 111 of the nozzle 11 and can be directly discharged to the outside of the respiratory detection device from the outlet 131 of the first air passage 20. This allows the airflow to flow freely in the first air passage 20. The first gas detection module 40 can detect the volume of exhaled gas in the first air passage 20, thereby realizing the detection of vital capacity, that is, realizing the function of the respiratory detection device in detecting vital capacity.

[0139] It should be noted that by adjusting the diameter of the first inlet 62, the flow of large-volume gas within the first air passage 20 can be made undamped, thus achieving an undamped effect in the first air passage 20. Therefore, the diameter of the first inlet 62 can be set according to the requirements for undamped flow and the design of the air passage, ensuring that the diameter of the first inlet 62 does not impede the gas flow within the first air passage 20 and thus affect the accuracy of vital capacity measurement.

[0140] In other words, in this embodiment of the application, the position adjustment of the adjusting member 60 is used to adjust the flow direction of the gas entering the respiratory detection device, so that it can be introduced into the first airway 20 to realize the detection of vital capacity, or it can be introduced into the second airway 30 to realize the detection of the component gas content in the exhaled gas. This enriches the function of the respiratory detection device, helps the multi-functional integration of the respiratory detection device, supports home screening of various respiratory diseases, and helps meet people's needs for respiratory system function testing.

[0141] Furthermore, it overcomes the conflicting airflow requirements in lung capacity testing and nitric oxide content testing. With the regulator 60 in the first position, a continuous low-flow exhalation method can be used, allowing gas to enter the second airway 30 for nitric oxide detection. With the regulator 60 in the second position, a transient high-flow exhalation method can be used, allowing gas to enter the first airway 20 for lung capacity testing, greatly facilitating the realization of multi-functional integration in home respiratory testing devices.

[0142] Figure 13 This is a partial structural diagram of a respiratory detection device provided in an embodiment of this application when the adjusting component is in the third position. Figure 14 This is a partial cross-sectional structural diagram of a respiratory detection device provided in an embodiment of this application when the adjusting component is in the third position.

[0143] See Figure 13 As shown, when the adjusting member 60 is rotated to the third position, the second port 63 of the adjusting member 60 is opposite to the air outlet 131, and the two ports are engaged. Figure 14 As shown, the second port 63 is connected to the air outlet 131, that is, the first air passage 20 can be connected to the outside of the breathing detection device through the air outlet 131 and the second port 63. In this way, the gas entering the first air passage 20 from the air inlet 111 can be discharged to the outside of the breathing detection device through the air outlet 131 and the second port 63.

[0144] The second inlet 63 has a smaller diameter than the first inlet 62. This smaller diameter creates resistance to gas flow. Exhaled air passing through the first airway 20 and exiting through the second inlet 63 is damped, meaning the user must resist this resistance during exhalation. Conversely, external air entering the first airway 20 through the second inlet 63 is also damped by the smaller diameter, requiring the user to resist this resistance during inhalation. This process trains the user's breathing process and improves respiratory system function, enabling the respiratory testing device to perform respiratory system training. This further enriches the device's functionality, allowing it to perform at least lung capacity testing, exhaled gas composition detection, and respiratory system training, creating a multi-functional integrated architecture that meets the needs of home-based respiratory function testing.

[0145] The number of second through-holes 63 can be multiple. For example, multiple openings can be spaced apart on the adjusting member 60 to form multiple second through-holes 63. The diameters of the multiple second through-holes 63 are not equal. For example, taking four second through-holes 63 as an example (see reference). Figure 8 As shown, the openings can be the second opening portion 63, the second opening portion 63a, the second opening portion 63b, and the second opening portion 63c, with their diameters decreasing sequentially.

[0146] When the second inlet 63 of different diameters is connected to the outlet 131, the second inlet 63 generates different degrees of damping during inhalation or exhalation, thereby providing different damping levels for the user's respiratory system training. This realizes a multi-level damping design during respiratory system training, which can provide different training intensities, enhance the effect of respiratory system training, and help improve the performance of respiratory system detection equipment.

[0147] In other words, when the adjustment member 60 is in the third position, the breathing detection system can include different gears to connect different second inlets 63 to the outlet 131 respectively, thereby realizing the adjustment of the breathing system training scheduling gear.

[0148] Figure 15 This is a cross-sectional top view of a respiratory detection device provided in an embodiment of this application.

[0149] In the embodiments of this application, see Figure 15 As shown, the air nozzle 11 and the first pipe fitting 14 form a first air passage 20, and the extension direction of the first air passage 20 is a first direction, such as... Figure 15 The x-direction in the middle. A second air passage 30 is formed within the second pipe fitting 15, and the extension direction of the second air passage 30 is the second direction, such as... Figure 15 The first direction can be perpendicular to the second direction, meaning there is a right-angle turn between the second air passage 30 and the first air passage 20. Gas flows from the first air passage 20 into the second air passage 30, and the right-angle turn creates a damping effect on the gas flow. On one hand, when the adjusting member 60 is in the first position to detect the gas component content in exhaled gas, it helps to reduce the flow rate of gas entering the second air passage 30, thus improving the accuracy of the detection.

[0150] On the other hand, due to the damping effect at the right-angle corner, when the adjusting member 60 is in the second or third position, it is beneficial to allow the gas to be discharged directly from the outlet 131 along the first gas path 20, rather than flowing to the second gas path 30, which is also beneficial to improving the accuracy of detection.

[0151] Of course, in some other examples, the first direction and the second direction may not be perpendicular, and there may be an inclined angle between them. The specific value of the inclined angle can be selected and set according to the design requirements of the first air passage 20 and the second air passage 30.

[0152] In the embodiments of this application, see Figure 15 As shown, the second gas detection module 50 may include a detection unit 51 and a micro gas pump 52. The detection unit 51 is used to detect the content of component gases contained in the gas. The detection unit 51 may be a chemical reaction unit, which obtains the content of component gases by reacting chemically with the component gases. Alternatively, the detection unit 51 may be other units capable of detecting the content of component gases. For example, the detection unit 51 may also be a photoreaction unit, which obtains the content of component gases by reacting optically with the component gases.

[0153] The miniature air pump 52 can control the amount of gas entering the detection unit 51. This means that the miniature air pump 52 allows for precise control of the amount of gas entering the detection unit 51, ensuring that only a specific amount of gas enters the detection unit 51 for detecting the content of its constituent gases. This helps improve the accuracy of component gas content detection. Furthermore, detecting only a specific amount of gas helps reduce the size of the detection unit 51 itself, contributing to the miniaturization of the entire respiratory detection device and improving its convenience.

[0154] Specifically, the micro air pump 52 can be connected to the second air passage 30 and the detection unit 51 respectively. For example, the micro air pump 52 can be located between the second air passage 30 and the detection unit 51. The micro air pump 52 can be a positive pressure pump. The micro air pump 52 can pump the gas in the second air passage 30 into the detection unit 51 at a certain flow rate. By controlling the flow rate of the micro air pump 52, the amount of gas entering the detection unit 51 can be controlled.

[0155] Or see Figure 15 As shown, the micro air pump 52 can also be connected to the detection unit 51. For example, the micro air pump 52 is located on the side of the detection unit 51 away from the second air passage 30. The micro air pump 52 can be a negative pressure pump. The micro air pump 52 can draw gas from the second air passage 30 into the detection unit 51 at a certain flow rate. By controlling the flow rate of the micro air pump 52, the amount of gas entering the detection unit 51 can be controlled.

[0156] It should be noted that, since the detection accuracy of the detection unit 51 is related to temperature, a heating module can be installed inside the main housing 12 to heat the detection unit 51 and ensure the accuracy of the detection unit 51.

[0157] See also Figure 15 As shown, the respiratory detection device may also include a filter element 80, which is disposed within the housing 10. Specifically, the filter element 80 is located between the second air passage 30 and the second gas detection module 50. The filter element 80 can perform dehumidification and sterilization, thereby reducing or preventing the impact or damage caused by high humidity gas or bacteria in the gas on the detection unit 51 and the micro air pump 52, etc., which helps to improve the accuracy of the second gas detection module 50 and also helps to increase the lifespan of the second gas detection module 50.

[0158] In order to assemble and fix the filter element 80, a mounting base 90 can also be provided inside the housing 10. The mounting base 90 can be set between the second pipe fitting 15 and the second gas detection module 50. The filter element 80 can be set on the mounting base 90. The second pipe fitting 15 can be connected to the mounting base 90. The mounting base 90 can be connected to the second gas detection module 50 through the pipe connector 140.

[0159] Specifically, the filter element 80 can be detachably mounted on the mounting base 90 to facilitate disassembly and replacement. For example, the mounting base 90 may have a mounting groove into which the filter element 80 can be inserted. Of course, in some other examples, the filter element 80 can also be detachably mounted on the mounting base 90 in other ways, such as through a snap-fit ​​connection.

[0160] In this process, gas is introduced into the second air passage 30 through the air inlet 111 and then into the detection unit 51. The damping in the entire gas flow path is relatively large (such as the vertical angle between the second air passage 30 and the first air passage 20, the flow control of the micro air pump 52, etc.). Users need to overcome these dampings during exhalation, which may result in unsuitable exhalation.

[0161] Figure 16 This is a schematic diagram of another internal partial structure of a respiratory detection device provided in an embodiment of this application.

[0162] Therefore, see Figure 16 As shown, a ventilation branch 160 can also be provided inside the main housing 12, and an exhaust port (not shown in the figure) can also be opened on the main housing 12. One end of the ventilation branch 160 is connected to the second air passage 30. Specifically, one end of the ventilation branch 160 can be connected to the second pipe fitting 15, thereby connecting the ventilation branch 160 and the second air passage 30. The other end of the ventilation branch 160 is connected to the exhaust port, that is, the second air passage 30 can be directly connected to the outside of the respiratory detection device through the ventilation branch 160. Under the condition that it does not affect the detection unit 51's detection of the component gas content of exhaled gas, it can allow some gas to be discharged more smoothly from the ventilation branch 160, which is convenient for users to exhale and helps to improve the user experience of the respiratory detection device.

[0163] See also Figure 16 As shown, to improve the stability of the second gas detection module 50 within the main housing 12, a support member 150 can be provided within the main housing 12. The detection unit 51, the micro air pump 52, and the control circuit board 110 can all be fixedly mounted on the support member 150. The control circuit board 110 can be located on the side of the second gas detection module 50 facing away from the support member 150, thereby increasing the concentration of structural components within the main housing 12 and helping to reduce the size of the respiratory detection device.

[0164] Figure 17 This is a top cross-sectional view of another respiratory detection device provided in an embodiment of this application.

[0165] See Figure 17 As shown, the respiratory detection device 100 may also include a constant flow device 70, which may be located between the second gas path 30 and the second gas detection module 50. The two ends of the constant flow device 70 are respectively connected to the second gas path 30 and the second gas detection module 50. For example, the second pipe fitting 15 may be connected to the constant flow device 70 through a pipe connector, and the constant flow device 70 may also be connected to the second gas detection module 50 through a separately provided pipe connector.

[0166] The constant flow meter 70 can be a pressure-related device. For example, the constant flow meter 70 can control the opening and closing of a certain flow rate through a pressure difference, that is, the constant flow meter 70 can impart a predetermined flow rate to the gas. The constant flow meter 70 can control the flow rate of the gas entering the second gas detection module 50. For example, when detecting nitric oxide content, the constant flow meter 70 can allow the gas to enter the second gas detection module 50 at a continuous low flow rate to meet the gas flow requirements for nitric oxide content detection, reducing the user's requirements for exhaled airflow control, simplifying the detection process, and improving the user experience of the respiratory detection device.

[0167] The respiratory detection device 100 may also include other structural components that enable it to fully perform its functions. For example, a switch button may be provided on the housing 10, which can be connected to a control circuit board. A data interface may also be provided on the housing 10, allowing for charging of the respiratory detection device or connection of external functional modules. The respiratory detection device may also include a transmission module, enabling wireless transmission with terminal devices.

[0168] Figure 18 This is a schematic diagram of the working process of a respiratory detection device provided in an embodiment of this application.

[0169] Take the scenario of this respiratory detection device being linked to a mobile app as an example. See [link / reference] Figure 18As shown, the pipeline connection accessories include structural components such as the first pipeline component, the second pipeline component, and the pipeline connector to provide a gas flow path. When breathing tests or training are required, the breathing test device can be turned on via a switch button or a mobile app. Then, the desired function or breathing training level can be selected by rotating the adjustment component 60. The selected test item can also be displayed on the mobile app. For example, when selecting nitric oxide testing, the adjustment component 60 is rotated to the first position. First, the operating environment temperature of the detection unit 51 is judged by the control circuit board 110. If the temperature is insufficient, preheating can be performed by the heating module. If the temperature is suitable, it can display or remind the user that everything is ready. The user exhales through the nozzle 11, and the gas enters the first gas path. The first gas detection module 40 detects the flow rate, and this flow rate reading can be displayed on the mobile app. The gas enters the second gas path through the first gas path and passes through the filter element 80, which performs sterilization and dehumidification. Then, the gas passes through the constant flow device 70 and enters the second gas detection module. The constant flow device 70 controls the gas flow rate. The micro air pump 52 of the second gas detection module 50 controls the amount of gas entering the detection unit 51. The detection unit 51 detects the component content of the gas entering it. The detection results can be displayed on a mobile APP. By combining the values ​​of the detection unit 51 and the first gas detection module 40, the detection result of nitric oxide can be obtained, which can also be displayed on the mobile APP.

[0170] When lung capacity testing is selected, the adjusting element 60 is rotated to the second position. The user exhales through the nozzle 11, and the gas is discharged through the first airway outlet and the first passage. The first gas detection module 40 detects the gas flow rate, and the flow rate reading can be displayed through a mobile APP. The lung capacity value can be obtained from the flow rate reading, and this value result can also be displayed through the mobile APP.

[0171] If breathing training is selected, the adjuster 60 is rotated to the third position, and the user exhales through the nozzle 11. The gas passes through the first air passage, the outlet, and the second port, thus completing the breathing training. During this process, feedback on the success of the breathing can be obtained via a mobile app. The first gas detection module 40 can also detect the gas flow rate, and the flow rate reading can be displayed on the mobile app. The flow rate reading can provide some guidance and suggestions for the breathing training, which can also be displayed on the mobile app.

[0172] Figure 19 This is a schematic diagram of another partially disassembled structure of a respiratory detection device provided in an embodiment of this application.

[0173] In this application embodiment, the specific structural implementation of the shell can be various. For example, in one possible implementation, see [link to relevant documentation]. Figure 19 As shown, the housing 10 includes an air nozzle 11, a main housing 12, and an assembly 13. The main housing 12 may include a connected gripping part 121 and a control part 122, and a first pipe component 14 may be disposed within the control part 122 (see reference). Figure 5 As shown), specifically, the first pipe component 14 can be installed inside the control unit 122.

[0174] The nozzle 11 can be connected to the first end of the control unit 122, and the mounting part 13 can be disposed on the second end of the control unit 122. The second pipe fitting 15, the second gas detection module 50, the control circuit board 110, etc. are all disposed inside the grip part 121 (see reference). Figure 5 (As shown).

[0175] The control unit 122 is connected to the grip unit 121, which can be held by the user during use. During use, the user blows air into the first air passage 20 or the second air passage 30 inside the housing 10 by positioning the mouth part opposite the air nozzle 11.

[0176] The control unit 122 and the grip can be tilted relative to each other, that is, the control unit 122 and the grip 121 can form a tilt angle, the value of which can be greater than or equal to 90°. On the one hand, this facilitates the tilting arrangement between the first air passage 20 in the control unit 122 and the second air passage 30 in the grip 121. On the other hand, when the user holds the grip 121 for testing or training, it is easier for the user to align their mouth with the air nozzle 11, which helps to improve the user experience of the breathing detection device 100.

[0177] The adjusting member 60 can be mounted on the assembly 13 via a shaft-hole fit. For example, a rotating hole can be formed in the assembly 13, and the adjusting member 60 can have a rotating shaft that fits into the rotating hole. The adjusting member 60 and the assembly 13 can be rotatably connected through the fit between the rotating shaft and the rotating hole.

[0178] Of course, in some other examples, the adjusting member 60 can also be rotatably mounted on the assembly 13 in other ways. For example, the assembly 13 may have a guide rail in the circumferential direction, and the adjusting member 60 can be disposed in the guide rail and rotated along the guide rail, thereby rotatably mounting the adjusting member 60 on the assembly 13.

[0179] Among them, see Figure 19 As shown, the assembly 13 may include a cavity, and the adjusting member 60 is rotatably disposed within the cavity. In one possible embodiment, a portion of the adjusting member 60 may extend outside the cavity of the assembly 13 (in conjunction with...). Figure 17As shown in the figure, this allows the user to easily rotate the adjusting member 60, thereby enabling the adjusting member 60 to move and switch between the first position, the second position and the third position, so that the respiratory detection device can perform different functions.

[0180] Multiple marking sections 65 may also be provided on the adjusting member 60 (in combination with...) Figure 8 As shown, multiple indicator parts 65 are arranged at intervals along the circumference of the adjuster 60 to indicate its position. Each position of the adjuster 60 corresponds to at least one indicator part 65. When the adjuster 60 is in the first, second, or third position, the portion of the adjuster 60 with the corresponding indicator part 65 is located outside the cavity of the assembly 13, allowing the user to determine the current function of the respiratory detection device 100 by observing the indicator parts 65.

[0181] It should be understood that when the adjustment member 60 is in the third position to achieve the breathing training function, there are multiple different gears, each of which can correspond to a label 65.

[0182] The identification part 65 can be a number, a letter, or a pattern, etc., and is not limited in this embodiment.

[0183] The circumferential sidewall of the adjusting member 60 may have a protruding operating part 64 (combined with...). Figure 8 As shown, the raised operating part 64 increases the roughness of the outer peripheral surface of the adjusting part 60, which makes it easier for the user to rotate the adjusting part 60 and helps to improve the user experience of the respiratory detection device 100.

[0184] Among them, continue Figure 19 As shown, the respiratory detection device 100 may also include a tail shell 17, which has a receiving cavity. The tail shell 17 can be covered on the end of the assembly 13 facing away from the air nozzle 11. The tail shell 17 can cover the adjustment component 60, which can shield and protect the adjustment component 60. In addition, it also helps to improve the aesthetics of the respiratory detection device 100.

[0185] To improve the stability of the adjusting component 60 on the assembly 13, a limiting component 120 may be included. The limiting component 120 is positioned across the side of the adjusting component 60 facing away from the assembly 13, and both ends of the limiting component 120 are connected to the adjusting component 60. In this way, the limiting component 120 can limit the adjusting component 60, enhance the stability of the adjusting component 60 on the assembly 13, and reduce or prevent misalignment of the adjusting component 60 other than rotation, thereby improving the smoothness of the rotation of the adjusting component 60 and contributing to a better user experience of the respiratory detection device.

[0186] Figure 20This is a schematic diagram of the structure of another respiratory detection device provided in the embodiments of this application.

[0187] The shape of the main shell 12 can be various, for example, see Figure 19 As shown, the plane parallel to the first and second directions is designated as the first plane, and the plane perpendicular to the first plane is designated as the second plane. The cross-sectional shape of the main shell 12 along the first plane can be T-shaped. Alternatively, see [link to documentation]. Figure 20 As shown, the cross-sectional shape of the main shell 12 along the first plane can be L-shaped.

[0188] Alternatively, the cross-sectional shape of the main shell 12 along the second plane can be O-shaped (see reference). Figure 21 (As shown). Of course, in some other examples, the shape of the main shell 12 can also be other regular or irregular shapes.

[0189] Figure 21 This is a schematic diagram of another respiratory detection device provided in an embodiment of this application. Figure 22 This is a partial structural schematic diagram of another respiratory detection device provided in an embodiment of this application.

[0190] In another possible implementation, see Figure 21 As shown, the main shell 12 can be a single structural component, for example... Figure 20 The respiratory detection device 100 may also include a cover 16, which may have a chamber and may be placed on the main shell 12.

[0191] Combination Figure 22 As shown, the nozzle 11 is connected to the first end of the main housing 12, the fitting 13 is disposed on the second end of the main housing 12, and the cover 16 can be placed on the first end of the main housing 12, placing the nozzle 11 within the cavity of the cover 16. The cover 16 provides protection for the nozzle 11, reducing or preventing contamination of the nozzle 11 by bacteria, dust, and other environmental factors when the respiratory detection device is not in use, thereby further improving the user experience of the respiratory detection device.

[0192] Figure 23 This is a schematic diagram of the internal structure of another respiratory detection device provided in an embodiment of this application.

[0193] See Figure 23 As shown, the first pipe component 14, the second pipe component 15, the first gas detection module, the second gas detection module 50, the power supply module, and the control circuit board 110 are all located inside the main housing 12. The gas nozzle 11 can be set on the first end of the first pipe component 14, and the gas nozzle 11 is connected to the first pipe component 14 to form the first gas passage 20 (see reference). Figure 24 As shown), the first air passage 20 extends along the first direction (x direction in the figure).

[0194] The second pipe fitting 15 can be perpendicular to the first pipe fitting 14. A second air passage (not shown in the figure) extending along a second direction (y direction in the figure) is formed inside the second pipe fitting 15. The first direction can also be perpendicular to the second direction.

[0195] The second gas detection module 50 is located on one side of the first pipe component 14 along the second direction. That is, the second gas detection module 50 occupies the space of the first pipe along the second direction. This makes reasonable use of the space inside the main shell 12, improves the integration of the various modules in the respiratory detection device, and helps to reduce the size of the respiratory detection device and improve its portability.

[0196] Specifically, the detection unit 51 and the micro air pump 52 of the second gas detection module 50 can be located on the same side, or the detection unit 51 and the micro air pump 52 can be located on both sides of the first pipe component 14 along the second direction.

[0197] Figure 24 This is a cross-sectional structural diagram of another respiratory detection device provided in an embodiment of this application. Figure 25 This is a partial structural breakdown diagram of another respiratory detection device provided in an embodiment of this application.

[0198] See Figure 24 As shown, in one possible implementation, the adjusting member 60 can be entirely located within the cavity of the assembly 13. Specifically, in conjunction with... Figure 25 As shown, the assembly 13 may include a first connecting part 132 and a second connecting part 133. The first connecting part 132 and the second connecting part 133 are connected and form a cavity of the assembly 13. The second connecting part 133 may be disposed on the first pipe fitting 14, and the air outlet 131 may be formed on the first connecting part 132.

[0199] To facilitate the rotation operation of the adjusting member 60, a rotating member 130 can be provided on the side of the assembly 13 facing away from the air nozzle 11. Specifically, the rotating member 130 can be provided on the side of the first connecting part 132 facing away from the air nozzle 11. The rotating member 130 is located on the outside of the entire assembly 13 and can be located outside the entire housing 10.

[0200] The rotating component 130 can be connected to the adjusting component 60. The rotating component 130 is rotatably mounted on the assembly 13, so that rotating the rotating component 130 can rotate the adjusting component 60, thereby enabling the adjusting component 60 to move and switch between the first position, the second position, and the third position, allowing the respiratory detection device to perform different functions. This facilitates user operation and helps improve the user experience of the respiratory detection device.

[0201] The verticality, numerical values, and numerical ranges involved in the embodiments of this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0202] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances. The terms "first," "second," "third," "fourth," etc. (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0203] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A respiratory detection device, characterized in that, The device includes a housing with an air inlet and an air outlet. The housing contains a first air passage and a second air passage. A first end of the first air passage is connected to the air inlet, and a second end of the first air passage is connected to the air outlet. A first end of the second air passage is connected to the first air passage, and the diameter of the first end of the second air passage is smaller than the diameter of the air inlet. It also includes a first gas detection module and a second gas detection module located inside the housing. The first gas detection module is disposed in the first gas path and is configured to detect the amount of gas entering from the air inlet. The second gas detection module is connected to the second gas path and is configured to detect the content of component gases in the gas. It also includes an adjusting member, which is movably disposed on the housing and located at the second end of the first air passage. The adjusting member includes a blocking part and a first opening part. When the adjusting member is in the first position, the blocking part blocks the air outlet so that the gas entering from the air inlet can pass into the second air passage. When the adjusting member is in the second position, the first inlet and the air outlet are connected to the first air passage.

2. The respiratory detection device according to claim 1, characterized in that, The adjusting member further includes a second through-hole, the diameter of which is smaller than the diameter of the first through-hole. When the adjusting member is in the third position, the second port and the air outlet are connected to the first air passage, and the first port is not connected to the air outlet.

3. The respiratory detection device according to claim 2, characterized in that, There are multiple second openings, and the diameters of the multiple second openings are not equal.

4. The respiratory detection device according to claim 2 or 3, characterized in that, The adjusting member is rotatably mounted on the housing. When the adjusting member is in the first position, the blocking part is opposite to the air outlet. When the adjusting member is in the second position, the first through-hole is opposite to the air outlet. When the adjusting member is in the third position, the second port is opposite to the air outlet.

5. The respiratory detection device according to any one of claims 1-3, characterized in that, The housing includes an air nozzle, a main housing, and mounting accessories; The air nozzle is connected to the first end of the main housing, the assembly is disposed on the second end of the main housing, the adjusting member is movably disposed on the assembly, the first air passage and the second air passage are disposed inside the main housing, the air nozzle has the air inlet, and the assembly has the air outlet.

6. The respiratory detection device according to claim 5, characterized in that, It also includes a first pipe fitting and a second pipe fitting disposed within the main housing, wherein the first gas detection module is disposed on the first pipe fitting; The air nozzle is disposed on the first end of the first pipe fitting and is connected to the first pipe fitting to form the first air passage extending in the first direction. The fitting is connected to the second end of the first pipe fitting, the second pipe fitting is connected to the first pipe fitting, and the second pipe fitting has a second air passage extending in the second direction.

7. The respiratory detection device according to claim 6, characterized in that, The first direction is perpendicular to the second direction.

8. The respiratory detection device according to claim 6 or 7, characterized in that, The main housing includes a gripping part and a control part. The first pipe component is disposed in the control part. The air nozzle is connected to the first end of the control part. The mounting part is disposed on the second end of the control part. The second pipe fitting and the second gas detection module are both disposed inside the gripping part. The control part is connected to the gripping part, and the control part and the gripping part form an inclined angle, which is greater than or equal to 90°.

9. The respiratory detection device according to claim 6 or 7, characterized in that, The second gas detection module is located on one side of the first pipe fitting along the second direction.

10. The respiratory detection device according to any one of claims 6 or 7, characterized in that, The cross-sectional shape of the main shell along the first plane includes a T-shape or an L-shape; The cross-sectional shape of the main shell along the second plane includes an O-shape, the first plane is parallel to the first direction and the second direction, and the second plane is perpendicular to the first plane.

11. The respiratory detection device according to any one of claims 6 or 7, characterized in that, At least a portion of the adjusting member extends beyond the assembly.

12. The respiratory detection device according to claim 11, characterized in that, The adjusting member has a raised operating part on its circumferential sidewall.

13. The respiratory detection device according to any one of claims 6 or 7, characterized in that, The adjusting element is located within the assembly; It also includes a rotating component, which is located on the side of the assembly facing away from the air inlet. The rotating component is connected to the adjusting component and is rotatably mounted on the assembly.

14. The respiratory detection device according to any one of claims 1-3, 6-7, and 12, characterized in that, The second gas detection module includes a detection unit and a micro air pump. The micro air pump is located between the second gas path and the detection unit. Both ends of the micro air pump are connected to the second gas path and the detection unit, respectively. The micro air pump is configured to control the amount of gas entering the detection unit.

15. The respiratory detection device according to any one of claims 1-3, 6-7, and 12, characterized in that, The second gas detection module includes a detection unit and a micro air pump. The micro air pump is located on the side of the detection unit opposite to the second gas path. The micro air pump is connected to the detection unit and is configured to control the amount of gas entering the detection unit.

16. The respiratory detection device according to claim 14, characterized in that, It also includes a ventilation branch located within the housing, the housing having an exhaust port, and the ventilation branch being connected to the second air passage and the exhaust port respectively.

17. The respiratory detection device according to any one of claims 1-3, 6-7, 12, and 16, characterized in that, It also includes a constant flow device located within the housing, the second gas path being connected to the constant flow device, the constant flow device being connected to the second gas detection module, and the constant flow device being configured to control the flow rate of the gas entering the second gas detection module.

18. The respiratory detection device according to any one of claims 1-3, 6-7, 12, and 16, characterized in that, It also includes a filter element located within the housing, the filter element being situated between the second gas path and the second gas detection module.

19. The respiratory detection device according to any one of claims 1-3, 6-7, 12, and 16, characterized in that, The component gas includes at least one or more of nitric oxide, carbon monoxide, hydrogen, and volatile organic compounds.

20. A respiratory detection device, characterized in that, Includes a housing, the housing having an air inlet and an air outlet, the housing having a first air passage, a first end of the first air passage being connected to the air inlet, and a second end of the first air passage being connected to the air outlet; It also includes a first gas detection module located within the housing, the first gas detection module being disposed in the first gas path, and the first gas detection module being configured to detect the amount of gas entering from the air inlet; It also includes an adjusting component, which is movably disposed on the housing and located at the second end of the first air passage. The adjusting component includes a first inlet and a second inlet, the diameter of the second inlet being smaller than the diameter of the first inlet. When the adjusting component is in the second position, the first inlet and the air outlet are connected to the first air passage, while the second inlet is not connected to the air outlet. When the adjusting member is in the third position, the second port and the air outlet are connected to the first air passage, and the first port is not connected to the air outlet.

21. The respiratory detection device according to claim 20, characterized in that, The housing also has a second air passage, the first end of which is connected to the first air passage, and the diameter of the first end of the second air passage is smaller than the diameter of the air inlet. It also includes a second gas detection module located within the housing, the second gas detection module being connected to the second gas path, and the second gas detection module being configured to detect the content of component gases in the gas; The adjusting member further includes a blocking part. When the adjusting member is in the first position, the blocking part blocks the air outlet so that the gas entering from the air inlet can pass into the second air passage.

22. A respiratory detection device, characterized in that, The device includes a housing with an air inlet and an air outlet. The housing contains a first air passage and a second air passage. A first end of the first air passage is connected to the air inlet, and a second end of the first air passage is connected to the air outlet. A first end of the second air passage is connected to the first air passage, and the diameter of the first end of the second air passage is smaller than the diameter of the air inlet. It also includes a first gas detection module and a second gas detection module located inside the housing. The first gas detection module is disposed in the first gas path and is configured to detect the amount of gas entering from the air inlet. The second gas detection module is connected to the second gas path and is configured to detect the content of component gases in the gas. It also includes an adjusting member, which is movably disposed on the housing and located at the second end of the first air passage. The adjusting member includes a blocking part and a second opening part. The diameter of the second opening part is smaller than the diameter of the air outlet. When the adjusting member is in the first position, the blocking part blocks the air outlet so that the gas entering from the air inlet can pass into the second air passage. When the adjusting member is in the third position, the second port and the air outlet are connected to the first air passage.

23. The respiratory detection device according to claim 22, characterized in that, The adjusting member further includes a first through-hole portion, the diameter of which is larger than the diameter of the second through-hole portion; When the adjusting member is in the second position, the first through-hole and the air outlet are connected to the first air passage, while the second through-hole is not connected to the air outlet.

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