Multi-way valve group structure and expectoration system

Abstract

The present invention provides a multi-way valve group structure and a coughing system, which relate to the field of medical device technology. The multi-way valve group structure includes a first valve seat, a second valve seat, a valve plate, a blower assembly, and a drive assembly. The valve plate is driven by the drive assembly to rotate between the first valve seat and the second valve seat. Through the dynamic angle change of the valve plate, the airflow can be switched between different airways, so that the user can receive positive pressure airflow, negative pressure airflow, zero pressure airflow, negative pressure oscillating airflow, small amplitude positive pressure oscillating airflow, or large amplitude positive pressure oscillating airflow. In addition, during the switching process of different airflow states, the system response speed can be significantly improved, the sensitivity of the coughing system can be improved, the efficiency of respiratory tract clearance can be improved, and the timeliness of coughing assistance can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a multi-way valve group structure and a coughing system. Background Art

[0002] Expectoration is a physiological mechanism for normal individuals to clear sputum from the airways. However, for some patients with sputum-impairing coughing, such as those with neuromuscular diseases that weaken their ability to cough, or those on mechanical ventilation and intubation, if sputum is not promptly expelled from the airways, thick sputum and sputum crusts can easily accumulate and block the bronchial lumen, severely impairing the patient's ventilation function, worsening respiratory failure, and even causing secondary atelectasis. Therefore, the use of an expectorant system to clear airway secretions becomes essential.

[0003] In the related art, the expectoration system includes a valve seat and a valve core, wherein the valve core is configured with multiple gas channels, and the positive and negative pressure gas path switching is achieved by the movement of the valve core relative to the valve seat.

[0004] However, the coughing system has poor sensitivity in the higher switching frequency mode, and its respiratory tract clearing efficiency is low in actual use, which cannot meet the patient's coughing needs. Summary of the Invention

[0005] The embodiment of the present invention provides a multi-way valve group structure and a coughing system to solve the problem that the coughing system has poor sensitivity in a high switching frequency mode, low respiratory tract clearing efficiency in actual use, and cannot meet the patient's coughing needs.

[0006] In a first aspect, an embodiment of the present invention provides a multi-way valve group structure, comprising:

[0007] A first valve seat is provided with a first air port, a second air port, a first air channel communicating with the first air port, and a second air channel communicating with the second air port, wherein the first air channel and the second air channel respectively have at least one air channel opening;

[0008] The second valve seat is provided with a first communicating air port, a second communicating air port, a third communicating air port, a first communicating air passage communicating with the first communicating air port, a second communicating air passage communicating with the second communicating air port, and a third communicating air passage communicating with the third communicating air port, wherein the first communicating air passage, the second communicating air passage, and the third communicating air passage each have at least one communicating port;

[0009] a valve plate rotatably disposed between the first valve seat and the second valve seat, the valve plate having a plurality of vent holes;

[0010] a fan assembly connected to the first valve seat, the fan assembly being in communication with the first air port and the second air port respectively;

[0011] A drive assembly is connected to the valve disc, and the drive assembly is configured to drive the valve disc to rotate relative to the first valve seat and the second valve seat.

[0012] In a possible implementation, the first airway has one or two airway openings, the second airway has one or two airway openings, the first connecting airway has one connecting opening, the second connecting airway has one connecting opening, and the third connecting airway has one or two connecting openings.

[0013] In one possible embodiment, a first disk is provided between the valve plate and the second valve seat, the first disk is provided with four branch ports, each of the branch ports is connected to one of the connecting ports; and / or, a second disk is provided between the valve plate and the first valve seat, the second disk is provided with four connecting holes, each of the connecting holes is connected to one of the airway ports.

[0014] In a possible implementation manner, a plurality of sealing rings are provided between the first disk and the second valve seat, and each sealing ring wraps one of the communication ports.

[0015] In a possible implementation manner, a plurality of sealing rings are provided between the second disk and the first valve seat, and each of the sealing rings wraps one or two of the airway openings.

[0016] In a possible implementation, the first disk is embedded in the second valve seat, the second disk is embedded in the first valve seat, a cavity is enclosed between the first disk and the second disk, and the valve plate is disposed in the cavity.

[0017] In a possible implementation, the valve plate includes a first vent, a second vent, a third vent, and a fourth vent, and in the circumferential direction of the valve plate, the third vent and the fourth vent are arranged between the first vent and the second vent;

[0018] The first vent hole and the second vent hole are symmetrically arranged relative to the center of the valve plate. In the circumferential direction of the valve plate, the angle between the first vent hole and the third vent hole is greater than the angle between the second vent hole and the fourth vent hole.

[0019] In a possible implementation, the diameter of the first ventilation hole is equal to the diameter of the second ventilation hole, the diameter of the third ventilation hole is equal to the diameter of the fourth ventilation hole, and the diameter of the first ventilation hole is not equal to the diameter of the third ventilation hole.

[0020] In a possible implementation, the first vent hole, the second vent hole, the third vent hole, and the fourth vent hole are distributed on a circle concentric with the center of the valve plate.

[0021] In a second aspect, an embodiment of the present invention provides a sputum coughing system, comprising a controller, a pressure detector, and the multi-way valve group structure described in the first aspect;

[0022] The pressure detector is configured to detect the pressure of the third communicating air port corresponding to the third communicating air passage;

[0023] The controller is electrically connected to the pressure detector and the multi-way valve group structure respectively.

[0024] The multi-way valve group structure and expectoration system provided by the embodiments of the present invention have multiple airways arranged on the first valve seat and the second valve seat, a valve plate is arranged between the first valve seat and the second valve seat, and the valve plate is provided with multiple ventilation holes. When the driving component drives the valve plate to rotate relative to the first valve seat and the second valve seat, the valve plate responds quickly, thereby improving the sensitivity of the expectoration system and improving the efficiency of respiratory tract clearing.

[0025] The air passage is arranged on the first valve seat and the second valve seat, and the valve plate is provided with a plurality of vent holes. This separation design can reduce the structural complexity of the valve plate.

[0026] By dynamically changing the angle of the valve plate, the airflow can be switched between different airways, so that the user can receive positive pressure airflow, negative pressure airflow, zero pressure airflow, negative pressure oscillating airflow, small amplitude positive pressure oscillating airflow or large amplitude positive pressure oscillating airflow, which can significantly improve the system response speed and ensure the timeliness of cough assistance.

[0027] In related art, expectoration systems employ a valve seat and valve core structure, with an airway incorporated into the valve core. This reduces switching sensitivity due to the valve core's large mass, especially in MIE expectoration mode, where positive and negative pressure switching must be completed quickly. The multi-way valve assembly structure provided in this embodiment of the present invention utilizes airways disposed on first and second valve seats, with multiple vents disposed on the valve disc. This shortens the airflow path through the vents, reducing airflow resistance and improving switching sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 A schematic diagram of a multi-way valve group structure provided in Example 1 of the present invention;

[0030] Figure 2 for Figure 1 Exploded diagram of the multi-way valve group structure;

[0031] Figure 3 for Figure 1 A first cross-sectional view of the multi-way valve group structure;

[0032] Figure 4 for Figure 1 A second cross-sectional view of the multi-way valve group structure;

[0033] Figure 5 A schematic diagram of a first valve seat provided in Example 1 of the present invention;

[0034] Figure 6 A schematic diagram of a second valve seat provided in Example 1 of the present invention;

[0035] Figure 7 A schematic diagram of a first disk provided in Example 1 of the present invention;

[0036] Figure 8 A schematic diagram of a second disk provided in Example 1 of the present invention;

[0037] Figure 9 A schematic diagram of a turbo blower provided in Embodiment 1 of the present invention;

[0038] Figure 10 A schematic diagram of a fan base provided in Example 1 of the present invention;

[0039] Figure 11 A schematic diagram of a rotating shaft provided in Example 1 of the present invention;

[0040] Figure 12 A schematic diagram of a bearing seat provided in Example 1 of the present invention;

[0041] Figure 13 A schematic diagram of a valve plate provided in Example 1 of the present invention;

[0042] Figure 14 A schematic diagram of a first working state of the multi-way valve group structure provided in Example 1 of the present invention;

[0043] Figure 15 A schematic diagram of a second working state of the multi-way valve group structure provided in the first embodiment of the present invention;

[0044] Figure 16 A schematic diagram of a third working state of the multi-way valve group structure provided in the first embodiment of the present invention;

[0045] Figure 17 Schematic diagram of the air flow waveform of the multi-way valve group structure provided in Example 1 of the present invention Figure 1 ;

[0046] Figure 18 The fourth working state of the multi-way valve group structure provided in the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0047] Figure 19 The fourth working state of the multi-way valve group structure provided in the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0048] Figure 20 The fifth working state of the multi-way valve group structure provided in the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0049] Figure 21 The fifth working state of the multi-way valve group structure provided in the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0050] Figure 22 Schematic diagram of the air flow waveform of the multi-way valve group structure provided in Example 1 of the present invention Figure 2 ;

[0051] Figure 23 The sixth working state of the multi-way valve group structure provided in the first embodiment of the present invention means Figure 1 ;

[0052] Figure 24 The sixth working state of the multi-way valve group structure provided in the first embodiment of the present invention means Figure 2 ;

[0053] Figure 25 Schematic diagram of the air flow waveform of the multi-way valve group structure provided in Example 1 of the present invention Figure 3 ;

[0054] Figure 26 A schematic diagram of a sputum coughing system provided in Example 1 of the present invention;

[0055] Figure 27 A schematic diagram of a first valve seat of a multi-way valve group structure provided in Example 2 of the present invention;

[0056] Figure 28 A schematic diagram of a first valve seat of a multi-way valve group structure provided in Example 3 of the present invention;

[0057] Figure 29 Schematic diagram of the second valve seat of the multi-way valve group structure provided in Example 4 of the present invention.

[0058] Description of reference numerals:

[0059] 100-Multi-way valve group structure;

[0060] 110 - first valve seat; 111 - first air channel; 112 - second air channel; 113 - first air port; 114 - second air port; 115 - first air channel port; 116 - second air channel port; 117 - third air channel port; 118 - fourth air channel port; 119 - valve seat fixing hole; 1100 - first valve seat sealing surface; 1101 - first groove; 1102 - second groove; 1103 - third groove; 1104 - first ring; 1105 - second ring; 1106 - third ring; 1107 - fifth air channel port; 1108 - sixth air channel port;

[0061] 120 - second valve seat; 121 - first communicating air channel; 122 - second communicating air channel; 123 - third communicating air channel; 124 - first communicating air port; 125 - second communicating air port; 126 - third communicating air port; 127 - first communicating port; 128 - second communicating port; 129 - third communicating port; 1200 - second valve seat sealing surface; 1201 - first sealing groove; 1202 - second sealing groove; 1203 - third sealing groove; 1204 - first sealing ring; 1205 - second sealing ring; 1206 - third sealing ring; 1207 - first mounting hole; 1208 - fourth communicating port; 1209 - fifth communicating port;

[0062] 130 - valve plate; 131 - first vent hole; 132 - second vent hole; 133 - third vent hole; 134 - fourth vent hole; 135 - valve plate mounting hole;

[0063] 141-first plate; 1411-first air outlet; 1412-second air outlet; 1413-third air outlet; 1414-fourth air outlet; 1415-first connecting hole; 1416-second connecting hole;

[0064] 142 - second plate; 1421 - first communication hole; 1422 - second communication hole; 1423 - third communication hole; 1424 - fourth communication hole; 1425 - groove;

[0065] 151-Turbine fan; 1511-Air outlet; 1512-Air inlet; 152-Fan base; 1521-First interface; 1522-Second interface; 153-Fan gland; 154-Connector;

[0066] 161-motor; 162-motor base; 163-coupling; 164-rotating shaft; 1641-first mounting section; 1642-second mounting section; 1643-third mounting section; 1644-threaded section; 1645-circlip groove; 1646-mounting groove; 165-bearing; 166-bearing seat; 1661-bearing seat mounting hole; 1662-first fixing hole; 1663-second fixing hole; 1664-threaded hole; 167-bearing seat sealing ring;

[0067] 200-Expectorant system; 210-Controller; 220-Pressure detector. DETAILED DESCRIPTION

[0068] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0069] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0070] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0071] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0072] In the above description, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without mutual contradiction.

[0073] As described in the background technology, the coughing system has poor sensitivity in high-frequency switching modes, especially when switching between positive and negative pressures and experiencing large-amplitude oscillations. It is unable to quickly reach the pressure and oscillation amplitude required by the patient, resulting in low respiratory tract clearance efficiency and an inability to meet the patient's coughing needs. Research has found that the reason for this problem is that the valve core is equipped with multiple gas channels, resulting in a large mass. When the drive assembly drives the valve core to rotate, the valve core responds slowly, resulting in poor sensitivity of the coughing system. In actual use, the respiratory tract clearance efficiency is low, and it cannot meet the patient's coughing needs.

[0074] In order to solve the above problems, the multi-way valve group structure and coughing system provided in the embodiments of the present invention set the airway on the first valve seat and the second valve seat, and set a valve plate between the first valve seat and the second valve seat. The valve plate is provided with multiple ventilation holes. The driving component drives the valve plate to rotate relative to the first valve seat and the second valve seat, thereby realizing efficient driving force transmission and sealing gap optimization, thereby improving the overall switching sensitivity, reducing noise, and improving the respiratory tract clearing efficiency.

[0075] The multi-way valve group structure and the expectoration system provided by the embodiments of the present invention are described in detail below with reference to specific embodiments.

[0076] Example 1

[0077] First, see Figures 1 to 4As shown, an embodiment of the present invention provides a multi-way valve group structure 100, including: a first valve seat 110, a second valve seat 120, a valve plate 130, a fan assembly and a drive assembly.

[0078] The first direction of the multi-way valve group structure 100 is the X-axis direction, and the second direction of the multi-way valve group structure 100 is the Y-axis direction. The X-axis and the Y-axis are perpendicular to each other (see Figure 5 shown).

[0079] See also Figure 5 As shown, the material of the first valve seat 110 can be plastic.

[0080] The first valve seat 110 is provided with a first gas port 113 , a second gas port 114 , a first gas passage 111 communicating with the first gas port 113 , and a second gas passage 112 communicating with the second gas port 114 .

[0081] The first airway 111 and the second airway 112 each have at least one airway opening. In this embodiment, the first airway 111 and the second airway 112 each have two airway openings.

[0082] Exemplarily, the first air port 113 and the second air port 114 are arranged at one end of the first valve seat 110 in the +Y axis direction. The first air channel 111 and the second air channel 112 can be arranged inside the first valve seat 110. The two air channel openings corresponding to the first air channel 111 are respectively the first air channel opening 115 and the second air channel opening 116, and the first air channel opening 115 and the second air channel opening 116 are connected. The two air channel openings corresponding to the second air channel 112 are respectively the third air channel opening 117 and the fourth air channel opening 118, and the third air channel opening 117 and the fourth air channel opening 118 are connected. The first air channel opening 115, the second air channel opening 116, the third air channel opening 117 and the fourth air channel opening 118 are all arranged on the first valve seat sealing surface 1100, and the shape of the first valve seat sealing surface 1100 is circular.

[0083] The first air port 113 is in communication with the first air port 115 and the second air port 116 via the first air channel 111 . The second air port 114 is in communication with the third air port 117 and the fourth air port 118 via the second air channel 112 .

[0084] In one possible implementation, see Figure 5 As shown, along the circumference of the first valve seat 110, that is, along the circumference of the first valve seat sealing surface 1100, the four airway openings on the first valve seat 110 are arranged at equal intervals, that is, the first airway opening 115, the third airway opening 117, the fourth airway opening 118, and the second airway opening 116 are arranged at equal intervals. This arrangement can simplify the processing of the first valve seat 110 and reduce the processing complexity.

[0085] See also Figure 6As shown, the second valve seat 120 may be made of plastic.

[0086] The second valve seat 120 is provided with a first air communication port 124 , a second air communication port 125 , a third air communication port 126 , a first air communication passage 121 communicating with the first air communication port 124 , a second air communication passage 122 communicating with the second air communication port 125 , and a third air communication passage 123 communicating with the third air communication port 126 .

[0087] The first air communication passage 121, the second air communication passage 122 and the third air communication passage 123 each have at least one communication opening. In this embodiment, the first air communication passage 121, the second air communication passage 122 and the third air communication passage 123 each have one communication opening.

[0088] For example, the first air communication port 124 may be an air inlet, the second air communication port 125 may be an air outlet, and the third air communication port 126 may be a user vent. The first and second air communication ports 124, 125 are disposed at one end of the second valve seat 120 in the +Y-axis direction, and the third air communication port 126 is disposed at one end of the second valve seat 120 in the +X-axis direction. The first, second, and third air communication channels 121, 122, and 123 may be disposed within the second valve seat 120.

[0089] The communication port corresponding to the first communication channel 121 is a first communication port 127, and the communication port corresponding to the second communication channel 122 is a second communication port 128. The communication port corresponding to the third communication channel 123 is a third communication port 129. The first communication port 127, the second communication port 128, and the third communication port 129 are all provided on the second valve seat sealing surface 1200, which is circular in shape.

[0090] The first communication opening 127 and the second communication opening 128 are circular in shape, and the third communication opening 129 is elongated in shape.

[0091] The valve disc 130 is made of metal and is disposed between the first valve seat 110 and the second valve seat 120. The valve disc 130 is rotatable relative to the first valve seat 110 and the second valve seat 120. The valve disc 130 has a plurality of vent holes.

[0092] For example, the valve plate 130 may have four vent holes.

[0093] The fan assembly is connected to the first valve seat 110 and has an air outlet 1511 and an air inlet 1512 . The air outlet 1511 is connected to the first air port 113 of the first valve seat 110 , and the air inlet 1512 is connected to the second air port 114 of the first valve seat 110 .

[0094] For example, see Figure 9and Figure 10 As shown, the fan assembly includes a turbine fan 151 and a fan base 152. Turbine fan 151 has a circular air outlet 1511 and an air inlet 1512. Fan base 152 is made of silicone and has a first interface 1521 and a second interface 1522. Turbine fan 151 is mounted on fan base 152. The air outlet 1511 communicates with the first air port 113 of the first valve seat 110 through the first interface 1521. The air inlet 1512 communicates with the second air port 114 of the first valve seat 110 through the second interface 1522 and the connector 154.

[0095] It should be noted that the direction of rotation of the turbine fan 151 remains unchanged during operation. The fan assembly further includes a fan cover 153 , which fixes the turbine fan 151 on the fan base 152 .

[0096] The drive assembly is connected to the valve disc 130. The drive assembly is configured to drive the valve disc 130 to rotate relative to the first valve seat 110 and the second valve seat 120. This arrangement allows the dynamic angle change of the valve disc to switch airflow between different airways, allowing the user to receive positive pressure airflow, negative pressure airflow, zero pressure airflow, negative pressure oscillation airflow, small-amplitude positive pressure oscillation airflow, or large-amplitude positive pressure oscillation airflow. This can significantly improve the system's response speed and ensure the timeliness of expectoration assistance.

[0097] The multi-way valve group structure 100 provided in an embodiment of the present invention has multiple airways arranged on the first valve seat 110 and the second valve seat 120, and a valve plate 130 is arranged between the first valve seat 110 and the second valve seat 120. The valve plate 130 is provided with multiple ventilation holes. When the driving component drives the valve plate 130 to rotate relative to the first valve seat 110 and the second valve seat 120, the valve plate 130 responds quickly, thereby improving the sensitivity of the coughing system and improving the efficiency of respiratory tract clearing.

[0098] In the related art, the coughing system uses a combined structure of a valve seat and a valve core. The valve core in the related art is provided with an airway. When implementing airway switching, the large mass of the valve core reduces the switching sensitivity. For example, in the Mechanical Insufflation Exsufflation (MIE) coughing mode, it is necessary to complete the positive and negative pressure switching in a short time. For example, in the high-frequency oscillation mode, it is necessary to rotate the valve core at a high frequency and a large amplitude, and the switching sensitivity requirement is particularly prominent. The multi-way valve group structure provided in the embodiment of the present invention is provided on the first valve seat and the second valve seat through the airway, and the valve plate is provided with multiple vents. The airflow has a shorter path in the vents in the valve plate, which can reduce the airflow resistance and improve the switching sensitivity.

[0099] In one possible implementation, see Figure 2 and Figure 3 As shown, a first disc 141 is provided between the valve disc 130 and the second valve seat 120 , and a second disc 142 is provided between the valve disc 130 and the first valve seat 110 .

[0100] A circular first disc 141 is provided on one side of the end surface of the second valve seat 120. Figure 7 As shown, the first plate 141 is provided with a first air branch 1411, a second air branch 1412, a third air branch 1413 and a fourth air branch 1414. The first air branch 1411 is connected to the first connecting port 127, the second air branch 1412 is connected to the second connecting port 128, and the third air branch 1413 and the fourth air branch 1414 are connected to the third connecting port 129.

[0101] The first air communication port 124 communicates with the first air branch 1411 through the first air communication passage 121. The second air communication port 125 communicates with the second air branch 1412 through the second air communication passage 122. The third air communication port 126 communicates with the third air branch 1413 and the fourth air branch 1414 through the third air communication passage 123.

[0102] The first air communication port 124 , the second air communication port 125 , the third air communication port 126 , the first communication port 127 , the second communication port 128 , the first air branch port 1411 , the second air branch port 1412 , the third air branch port 1413 and the fourth air branch port 1414 are all circular in shape.

[0103] See also Figure 8 As shown, the second disc 142 is provided with four communication holes, each of which is communicated with an airway opening of the first valve seat 110 .

[0104] The communicating hole is circular in shape, and the diameters of the communicating hole, the first air branch 1411 , the second air branch 1412 , the third air branch 1413 , and the fourth air branch 1414 are all equal.

[0105] In some examples, the four communication holes are respectively a first communication hole 1421 , a second communication hole 1422 , a third communication hole 1423 and a fourth communication hole 1424 .

[0106] The second plate 142 is connected and fixed to the first plate 141 .

[0107] When the second plate 142 is fixed to the first plate 141, the four connecting holes of the second plate 142 are aligned with the first air branch 1411, the second air branch 1412, the third air branch 1413 and the fourth air branch 1414 of the first plate 141 respectively, that is, the axis of the first connecting hole 1421 coincides with the axis of the second air branch 1412, the axis of the second connecting hole 1422 coincides with the axis of the third air branch 1413, the axis of the third connecting hole 1423 coincides with the axis of the first air branch 1411, and the axis of the fourth connecting hole 1424 coincides with the axis of the fourth air branch 1414.

[0108] The four connecting holes of the second disk 142 are respectively connected to the four air duct ports of the first valve seat 110 , that is, the first connecting hole 1421 is connected to the first air duct port 115 , the second connecting hole 1422 is connected to the second air duct port 116 , the third connecting hole 1423 is connected to the third air duct port 117 , and the fourth connecting hole 1424 is connected to the fourth air duct port 118 .

[0109] It should be noted that, in other embodiments, when the first valve seat 110 has four airway openings, a second disk may not be provided between the valve plate 130 and the first valve seat 110 .

[0110] In a possible implementation, the first disk 141 and the second disk 142 enclose a cavity, and the valve plate 130 is disposed in the cavity.

[0111] The first plate 141, the second plate 142, and the valve disc 130 are all made of metal. With this arrangement, the surfaces of the first plate 141 and the second plate 142 in contact with the valve disc 130 and the second plate 142 in contact with the valve disc 130 can be machined into smooth surfaces. This ensures overall airtightness and low operating noise during operation of the multi-way valve assembly structure 100.

[0112] It should be pointed out that the coughing system in the related art adopts a combined structure of a valve seat and a valve core. The valve seat in the related art is made of plastic, and the valve core in the related art is made of metal. The contact surface between the plastic valve seat and the valve core is not smoothly processed, which leads to high operating noise during the operation of the coughing system in the related art.

[0113] The second plate 142 is provided with a groove 1425. When the second plate 142 is fixed to the first plate 141, the second plate 142 and the first plate 141 form a cavity.

[0114] For some examples, see Figure 2 、 Figure 6 and 7As shown, the second valve seat sealing surface 1200 of the second valve seat 120 is provided with a first sealing groove 1201, a second sealing groove 1202 and a third sealing groove 1203, the first connecting port 127 is located in the first sealing groove 1201, the second connecting port 128 is located in the second sealing groove 1202, and the third connecting port 129 is located in the third sealing groove 1203. A first sealing ring 1204 is installed in the first sealing groove 1201, a second sealing ring 1205 is installed in the second sealing groove 1202, and a third sealing ring 1206 is installed in the third sealing groove 1203. The first sealing ring 1204, the second sealing ring 1205 and the third sealing ring 1206 are installed between the first disk 141 and the second valve seat 120. The first sealing ring 1204 wraps the first connecting port 127, the second sealing ring 1205 wraps the second connecting port 128, and the third sealing ring 1206 wraps the third connecting port 129, thereby achieving sealing between the first connecting port 127, the second connecting port 128 and the third connecting port 129.

[0115] It should be noted that in the related art, the coughing system uses a combined structure of a valve seat and a valve core. The valve seat in the related art is made of plastic, the valve core in the related art is made of metal, and the valve core in the related art is provided with an air channel. This results in the valve core in the related art being relatively heavy. The motor driving the valve core to rotate will reduce the service life of the motor and increase the cost of using the overall device. In this embodiment, the first valve seat 110 and the second valve seat 120 are made of plastic, and the valve plate 130 is made of metal. The first valve seat 110 and the second valve seat 120 are provided with multiple air channels, and the valve plate 130 is provided with multiple ventilation holes. This can reduce the mass of the valve plate 130, thereby increasing the service life of the motor and reducing the cost of using the overall device.

[0116] In some examples, the first disk 141 is fixed to the second valve seat 120 through the second connecting hole 1416 , so that the first disk 141 is embedded in the second valve seat 120 .

[0117] For some examples, see Figure 2 and Figure 5 As shown, the first valve seat 110 is provided with a first groove 1101 and a second groove 1102 (see Figure 5 As shown, the first and second airway openings 115 and 116 are located within the first groove 1101, and the third and fourth airway openings 117 and 118 are located within the second groove 1102. A sealing ring is installed in each of the first and second grooves 1101 and 1102. The sealing ring corresponding to the first groove 1101 is the first ring 1104, and the sealing ring corresponding to the second groove 1102 is the second ring 1105.

[0118] See also Figure 5 and Figure 6As shown, the first valve seat 110 is provided with a valve seat fixing hole 119, and the second valve seat 120 is provided with a first mounting hole 1207. The valve seat fixing hole 119 and the first mounting hole 1207 are connected by screws to achieve a fixed connection between the first valve seat 110 and the second valve seat 120. After being fixed, the second disc 142 can be embedded in the first valve seat 110. A first ring 1104 and a second ring 1105 are provided between the first valve seat 110 and the first disc 141. The first ring 1104 surrounds the first airway opening 115 and the second airway opening 116, and the second ring 1105 surrounds the third airway opening 117 and the fourth airway opening 118, thereby achieving a seal between the two airway openings corresponding to the first airway 111 and the two airway openings corresponding to the second airway 112, thereby achieving a seal between the first airway opening 113 and the second airway opening 114.

[0119] First valve seat 110 is provided with a third groove 1103. First groove 1101 and second groove 1102 are located inside third groove 1103. Third ring 1106 is installed in third groove 1103. After first valve seat 110 and second valve seat 120 are fixed, third ring 1106 realizes a seal between first valve seat 110 and second valve seat 120.

[0120] In one possible embodiment, the drive assembly includes a motor 161, a motor base 162, a coupling 163, a rotating shaft 164, a bearing 165, and a bearing base 166. The motor 161 is fixed to the motor base 162, and the motor shaft of the motor 161 is inserted into one end of the coupling 163 and then fixed.

[0121] See also Figure 11 As shown, a first mounting section 1641 is provided at one end of the rotating shaft 164. The first mounting section 1641 is inserted into the other end of the coupling 163 and secured thereto. Both ends of the rotating shaft 164 are provided with retaining spring grooves 1645. Two second mounting sections 1642 are provided between the retaining spring grooves 1645. A bearing 165 is mounted on each of the two second mounting sections 1642. The retaining springs engage the retaining spring grooves 1645 to retain the bearings 165 in position. The rotating shaft 164 may also be provided with a mounting groove 1646. A sealing ring (e.g., a circular O-ring) may be installed in the mounting groove 1646 to seal the rotating shaft 164.

[0122] See also Figure 12As shown, the bearing seat 166 is provided with two bearing seat mounting holes 1661, and the two bearings 165 are installed in the two bearing seat mounting holes 1661. A circular bearing seat sealing ring 167 can be installed on the outside of the bearing seat 166 to achieve sealing of the bearing seat 166. The bearing seat 166 is provided with four first fixing holes 1662, four second fixing holes 1663, and four threaded holes 1664. The motor seat 162 and the bearing seat 166 are fixedly mounted through the first fixing holes 1662, and the bearing seat 166 and the second valve seat 120 are fixed through the second fixing holes 1663.

[0123] In some examples, the first disk 141 is connected and fixed to the threaded hole 1664 of the bearing seat 166 through the first connecting hole 1415 .

[0124] For some examples, see Figure 11 and Figure 13 As shown, the valve disc 130 is provided with a valve disc mounting hole 135. The rotating shaft 164 is provided with a third mounting section 1643 and a threaded section 1644 connected thereto. The third mounting section 1643 of the rotating shaft 164 is inserted into the valve disc mounting hole 135 of the valve disc 130, and a nut is screwed into the threaded section 1644 to fasten the valve disc 130.

[0125] In one possible implementation, see Figure 13 As shown, the plurality of vent holes of the valve plate 130 include a first vent hole 131 , a second vent hole 132 , a third vent hole 133 and a fourth vent hole 134 .

[0126] The valve plate 130 is circular in shape. In the circumferential direction of the valve plate 130 , the third vent hole 133 and the fourth vent hole 134 are disposed between the first vent hole 131 and the second vent hole 132 .

[0127] Among them, the driving component drives the valve plate 130 to rotate relative to the first valve seat 110 and the second valve seat 120, so that the first air vent 131 can be connected to the third air duct opening 117, the third connecting hole 1423, the first branch port 1411 and the first connecting port 127, and the second air vent 132 is connected to the second air duct opening 116, the second connecting hole 1422, the third branch port 1413 and the third connecting port 129. At this time, the third air vent 133 and the fourth air vent 134 are not connected to the first air duct opening 115, the second air duct opening 116, the third air duct opening 117 and the fourth air duct opening 118.

[0128] Alternatively, the drive assembly drives the valve plate 130 to rotate relative to the first valve seat 110 and the second valve seat 120, so that the first air vent 131 is connected to the first air duct port 115, the first connecting hole 1421, the second branch port 1412 and the second connecting port 128, and the second air vent 132 is connected to the fourth air duct port 118, the fourth connecting hole 1424, the fourth branch port 1414 and the third connecting port 129. At this time, the third air vent 133 and the fourth air vent 134 are not connected to the first air duct port 115, the second air duct port 116, the third air duct port 117 and the fourth air duct port 118.

[0129] Alternatively, the drive assembly drives the valve plate 130 to rotate relative to the first valve seat 110 and the second valve seat 120, so that the third air vent 133 is connected to the first air duct port 115, the first connecting hole 1421, the second branch port 1412 and the second connecting port 128, and the fourth air vent 134 is connected to the third air duct port 117, the third connecting hole 1423, the first branch port 1411 and the first connecting port 127. At this time, the first air vent 131 and the second air vent 132 are not connected to the first air duct port 115, the second air duct port 116, the third air duct port 117 and the fourth air duct port 118.

[0130] In one possible implementation, see Figure 13 As shown, the first vent hole 131 and the second vent hole 132 are symmetrically arranged relative to the center of the valve disc 130. That is, the angle between the first vent hole 131 and the second vent hole 132 is 180 degrees in the circumferential direction of the valve disc 130. With this arrangement, when the drive assembly drives the valve disc 130 to rotate relative to the first valve seat 110 and the second valve seat 120, the centers of the first vent hole 131 and the second vent hole 132 can be aligned with the centers of two of the four airway openings on the first valve seat 110, thereby allowing the first vent hole 131 and the second vent hole 132 to communicate with two of the four airway openings on the first valve seat 110.

[0131] In a possible implementation, in the circumferential direction of the valve plate 130 , the angle between the first vent hole 131 and the third vent hole 133 is greater than the angle between the second vent hole 132 and the fourth vent hole 134 .

[0132] In some examples, the angle between the first vent 131 and the third vent 133 in the circumferential direction of the valve disc 130 is greater than or equal to 64.5° and less than or equal to 67.5°. For example, the angle between the first vent 131 and the third vent 133 in the circumferential direction of the valve disc 130 is 64.5°, 65°, 65.5°, 66°, 67°, or 67.5°, etc. If the angle between the first vent 131 and the third vent 133 in the circumferential direction of the valve disc 130 is less than 64.5°, the first vent 131 and the third vent 133 may be connected to two of the four airway openings on the first valve seat 110 in the third working state, resulting in the inability of the expectoration system to achieve the pause function, affecting user safety. If the angle between the first vent 131 and the third vent 133 in the circumferential direction of the valve disc 130 is greater than 67.5°, the first and third vents 131, 133 may communicate with two of the four airway openings on the first valve seat 110 in the third operating state, preventing the expectoration system from pausing and impacting user safety. By limiting the angle between the first and third vents 131, 133 in the circumferential direction of the valve disc 130, simultaneous communication between the first and third vents 131, 133 and two of the four airway openings on the first valve seat 110 in the third operating state can be avoided, enabling the expectoration system to pause and ensuring user safety.

[0133] In some examples, the angle between the second vent 132 and the fourth vent 134 in the circumferential direction of the valve disc 130 is greater than or equal to 21.5° and less than 34°. For example, the angle between the second vent 132 and the fourth vent 134 in the circumferential direction of the valve disc 130 is 21.5°, 22°, 23°, 25°, 27°, 29°, 30°, 31°, 32°, 33°, or 34°. If the angle between the second vent 132 and the fourth vent 134 in the circumferential direction of the valve disc 130 is less than 21.5°, the second vent 132 and the fourth vent 134 may communicate with two of the four airway openings on the first valve seat 110 in the third working state, causing the expectoration system to be unable to achieve the pause function, thereby affecting user safety. If the angle between the second vent 132 and the fourth vent 134 along the circumference of the valve disc 130 is greater than 34°, the second and fourth vents 132, 134 may communicate with two of the four airway openings on the first valve seat 110 in the third operating state, preventing the expectoration system from pausing and impacting user safety. By limiting the angle between the second and fourth vents 132, 134 along the circumference of the valve disc 130, simultaneous communication between the second and fourth vents 132, 134 and two of the four airway openings on the first valve seat 110 in the third operating state can be avoided, enabling the expectoration system to pause and ensuring user safety.

[0134] In one possible embodiment, in the axial direction of the valve plate 130, the projection of an airway opening corresponding to the first airway 111 coincides with the projection of a connecting opening corresponding to the second connecting airway 122, that is, in the axial direction of the valve plate 130, the projection of the first airway opening 115 coincides with the projection of the second connecting opening 128.

[0135] In the axial direction of the valve plate 130, the projection of an airway opening corresponding to the second airway 112 coincides with the projection of the communication opening corresponding to the first communication airway 121, that is, in the axial direction of the valve plate 130, the projection of the third airway opening 117 coincides with the projection of the first communication opening 127.

[0136] In the axial direction of the valve disc 130, the projections of the other airway opening corresponding to the first airway 111 and the other airway opening corresponding to the second airway 112 are located within the projection area of ​​the third communication opening 129. That is, in the axial direction of the valve disc 130, the projections of the second airway opening 116 and the fourth airway opening 118 are located within the projection area of ​​the third communication opening 129. With this arrangement, different connection states between the multiple airways can be achieved through dynamic angle changes of the valve disc, thereby achieving mutual conversion between different working states of the multi-way valve group structure 100, thereby reducing the replacement and debugging time between different devices and improving the efficiency of sputum drainage.

[0137] In a possible implementation, the diameter of the first vent hole 131 is equal to the diameter of the second vent hole 132 , the diameter of the third vent hole 133 is equal to the diameter of the fourth vent hole 134 , and the diameter of the first vent hole 131 is not equal to the diameter of the third vent hole 133 .

[0138] In some examples, the diameter of the first vent 131 is larger than the diameter of the third vent 133. With this arrangement, when all the third vents 133 are connected to the first airway opening 115 and all the fourth vents 134 are connected to the third airway opening 117, the first vent 131 can be tangent to the second airway opening 116, and the second vent 132 can be tangent to the third airway opening 117, thereby pausing the expectoration system and ensuring user safety.

[0139] Illustratively, the ratio of the diameter of the first vent hole 131 to the diameter of the third vent hole 133 is greater than or equal to 1.5 and less than or equal to 3.

[0140] In one possible embodiment, the distance between the center of the first air vent 131 and the center of the valve plate 130, the distance between the center of the second air vent 132 and the center of the valve plate 130, the distance between the center of the third air vent 133 and the center of the valve plate 130, and the distance between the center of the fourth air vent 134 and the center of the valve plate 130 are all equal. It can be understood that the first air vent 131, the second air vent 132, the third air vent 133, and the fourth air vent 134 are distributed on a circle concentric with the center of the valve plate 130.

[0141] In a possible implementation, the first air channel 111 and the second air channel 112 are parallel to each other, wherein the extension direction of the first air channel 111 may be the Y-axis direction.

[0142] In the extension direction of the first air channel 111, the distance between the two air channel openings corresponding to the first air channel 111 is equal to the distance between the two air channel openings corresponding to the second air channel 112. This arrangement can simplify the processing of the two air channels on the first valve seat 110 and reduce production costs.

[0143] The following describes different working states of the multi-way valve group structure 100 , that is, different communication states, with reference to the accompanying drawings.

[0144] See also Figure 14 As shown, the first working state, that is, the positive pressure air outlet state, can continuously output positive pressure air, and the user can receive positive pressure airflow. The valve plate 130 rotates counterclockwise relative to the first valve seat 110 ( Figure 14 (direction of the arrow in the figure) to Figure 14The center of the first vent 131 of the valve disc 130, the center of the third air passage opening 117 of the first valve seat 110, the center of the third communication hole 1423 of the second disc 142, and the center of the first air branch opening 1411 of the first disc 141 are all located on the axis of the first vent 131, so that the first vent 131 of the valve disc 130 is connected to the third air passage opening 117 of the first valve seat 110 and the first communication opening 127 of the second valve seat 120, respectively. The center of the second vent 132 of the valve disc 130, the center of the second air passage opening 116 of the first valve seat 110, the second communication hole 1422 of the second disc 142, and the center of the third air branch opening 1413 of the first disc 141 are all located on the axis of the second vent 132, so that the second vent 132 of the valve disc 130 is connected to the second air passage opening 116 of the first valve seat 110 and the third communication opening 129 of the second valve seat 120, respectively. When the turbine blower 151 is running, the air inlet 1512 generates negative pressure to inhale air, and the gas enters the first communicating air channel 121 from the first communicating air port 124 of the second valve seat 120, that is, the gas enters the first communicating air channel 121 from the air inlet, and then passes through the first communicating port 127, the first vent hole 131 and the third air channel port 117 of the first valve seat 110 in sequence to enter the second air channel 112 of the first valve seat 110, and then the gas enters the second air channel 112 corresponding to the second air channel 112. The gas enters the turbine blower 151 through the first air port 114, then enters the first air channel 111 through the first air port 113 corresponding to the first air channel 111. The gas then passes through the second air channel port 116 of the first valve seat 110, the second vent hole 132 of the valve plate 130, and the third communication port 129 of the second valve seat 120, into the third communication air channel 123 of the second valve seat 120. The gas is then discharged through the third communication port 126 of the second valve seat 120, that is, discharged through the user vent. In this way, the gas enters from the air inlet and is discharged from the user vent, providing a positive pressure airflow to the user during inhalation.

[0145] See also Figure 15 As shown, the second working state, that is, the negative pressure inhalation state can continue the negative pressure inhalation, and the user can receive the negative pressure airflow. In the first working state, the valve plate 130 rotates 90 degrees counterclockwise relative to the first valve seat 110, and the valve plate 130 can be located at Figure 15The center of the first vent 131 of the valve disc 130, the center of the first air passage 115 of the first valve seat 110, the center of the first communication hole 1421 of the second disc 142, and the center of the second air branch 1412 of the first disc 141 are all located on the axis of the first vent 131, so that the first vent 131 of the valve disc 130 is connected to the first air passage 115 of the first valve seat 110 and the second communication hole 128 of the second valve seat 120, respectively. The center of the second vent 132 of the valve disc 130, the center of the fourth air passage 118 of the first valve seat 110, the center of the fourth communication hole 1424 of the second disc 142, and the center of the fourth air branch 1414 of the first disc 141 are all located on the axis of the second vent 132, so that the second vent 132 of the valve disc 130 is connected to the fourth air passage 118 of the first valve seat 110 and the third communication hole 129 of the second valve seat 120, respectively. When the turbine blower 151 is running, the air inlet 1512 generates negative pressure to inhale air, and the gas enters the third communicating air channel 123 from the third communicating air port 126 of the second valve seat 120, that is, the gas enters the third communicating air channel 123 from the user vent of the second valve seat 120, and then passes through the third communicating port 129, the second vent hole 132 of the valve plate 130 and the fourth air channel port 118 of the first valve seat 110 in sequence to enter the second air channel 112 of the first valve seat 110, and then the gas enters the second air channel 112 of the first valve seat 110 from the second air channel 126. 12 corresponding to the second air port 114 enters the turbine blower 151, then the gas enters the first air channel 111 from the first air port 113 corresponding to the first air channel 111. Thereafter, the gas passes through the first air channel port 115 of the first valve seat 110, the first vent hole 131 of the valve plate 130, and the second communication port 128 of the second valve seat 120 in sequence, entering the second communication air channel 122 of the second valve seat 120. Thereafter, the gas is discharged through the second communication air port 125 of the second valve seat 120, that is, discharged through the exhaust port. In this way, the gas enters from the user's vent and is discharged from the exhaust port, which can provide the user with negative pressure airflow during coughing. By switching between the first and second working states at a certain frequency, the user is assisted in expelling secretions (sputum) more quickly and thoroughly during coughing.

[0146] See also Figure 16 As shown, the third working state, i.e., the apnea state, can make the user's ventilator output no pressure. In the second working state, the valve plate 130 rotates 61 degrees counterclockwise relative to the first valve seat 110, and the valve plate 130 can be located at Figure 16The third vent hole 133 of the valve disc 130 is respectively connected to the first air passage opening 115 of the first valve seat 110, the first communication hole 1421 of the second disc 142, the second air branch opening 1412 of the first disc 141, and the second communication opening 128 of the second valve seat 120. The fourth vent hole 134 of the valve disc 130 is respectively connected to the third air passage opening 117 of the first valve seat 110, the third communication hole 1423 of the second disc 142, the first air branch opening 1411 of the first disc 141, and the first communication opening 127 of the second valve seat 120. When the turbo blower 151 is running, the air inlet 1512 generates negative pressure to inhale air, and the gas enters the first communicating air channel 121 from the first communicating air port 124 of the second valve seat 120, that is, the gas enters the first communicating air channel 121 from the air inlet, and then passes through the first communicating port 127, the fourth air vent 134 and the third air channel port 117 of the first valve seat 110 in sequence to enter the second air channel 112 of the first valve seat 110, and then enters the turbo blower 151 from the second air port 114 corresponding to the second air channel 112, and then enters the first air channel 111 from the first air port 113 corresponding to the first air channel 111, and then passes through the first air channel port 115 of the first valve seat 110, the third air vent 133 of the valve plate 130 and the second communicating port 128 of the second valve seat 120 in sequence to enter the second communicating air channel 122 of the second valve seat 120, and then is discharged through the second communicating air port 125 of the second valve seat 120, that is, discharged through the exhaust port. In this way, gas enters from the air inlet and exits from the exhaust port, providing a pressure-free output to the user. The third working state is used to provide the user with an adaptive rest mode after the end of an exhalation and inhalation cycle, which can help the user to cough up sputum next time. It also prevents the fan assembly from being damaged due to holding the air, thereby extending the service life of the turbine fan 151.

[0147] In the third working state, the first air vent 131 is tangent to the second air duct opening 116, the second air vent 132 is tangent to the third air duct opening 117, the third air vent 133 is entirely located inside the first air duct opening 115 of the first valve seat 110, and the fourth air vent 134 is entirely located inside the third air duct opening 117 of the first valve seat 110.

[0148] See also Figure 17 As shown, the first, second, and third operating states periodically provide positive pressure airflow for inspiration, negative pressure airflow for expiration, and no airflow output. This combined operating state combines MIE mode and rest mode, improving user compliance and comfort while using the device to assist in expectoration.

[0149] See also Figure 18 and Figure 19As shown, the fourth working state, that is, the first positive pressure oscillation outflow state can form a small amplitude positive pressure airflow oscillation, and the user can receive the small amplitude positive pressure oscillation airflow. Figure 18 location and Figure 19 The position rotates back and forth. The airflow path of the fourth working state is the same as the airflow path of the first working state. The difference between the fourth working state and the first working state is that the area where the first air vent 131 of the valve plate 130 intersects with the third airway port 117 of the first valve seat 110 and the first branch port 1411 of the first disk 141 is constantly changing, and the area where the second air vent 132 of the valve plate 130 intersects with the second airway port 116 of the first valve seat 110 and the third branch port 1413 of the first disk 141 is constantly changing, so that the gas circulation area is constantly changing, causing the output gas pressure to constantly change, thereby generating output gas oscillations, and then during the user's inhalation process, a small-amplitude positive pressure airflow oscillation is formed in the respiratory tract, which is conducive to loosening the secretions in the respiratory tract and can also improve the user's comfort when inhaling.

[0150] It should be noted that in the fourth operating state, the reciprocating angle range of the valve disc 130 relative to the first valve seat 110 is greater than or equal to 10° and less than or equal to 15°. The controller 210 of the expectoration system controls the operating angle and frequency of the motor 161 based on the pressure value fed back by the pressure detector 220, thereby achieving the parameter requirements set for the fourth operating state.

[0151] See also Figure 20 and Figure 21 As shown, the fifth state, that is, the negative pressure oscillation inhalation state, can form a negative pressure airflow oscillation, and the user can receive the negative pressure oscillation airflow. Figure 20 location and Figure 21 The position rotates back and forth. The airflow path of the fifth working state is the same as the airflow path of the second working state. The difference between the fifth working state and the second working state is that the area where the first air vent 131 of the valve plate 130 intersects with the first airway port 115 of the first valve seat 110 and the second branch port 1412 of the first disk 141 is constantly changing, and the area where the second air vent 132 of the valve plate 130 intersects with the fourth airway port 118 of the first valve seat 110 and the fourth branch port 1414 of the first disk 141 is constantly changing, so that the gas flow area is constantly changing, causing the output gas pressure to constantly change, thereby generating inhalation oscillations, and then during the user's exhalation, negative pressure airflow oscillations are formed in the respiratory tract, which is conducive to loosening the secretions in the respiratory tract and improving the user's comfort when exhaling.

[0152] It should be noted that in the fifth operating state, the reciprocating angle range of the valve disc 130 relative to the first valve seat 110 is greater than or equal to 10° and less than or equal to 15°. The controller 210 of the expectoration system controls the operating angle and frequency of the motor 161 based on the pressure value fed back by the pressure detector 220, thereby achieving the parameter requirements set for the fifth operating state.

[0153] See also Figure 22 As shown, the fourth working state, the fifth working state and the third working state form a mode of small-amplitude positive-pressure airflow oscillation, negative-pressure airflow oscillation of exhalation and no airflow output, which can improve the user's comfort and accelerate the loosening of sputum before the user coughs up sputum and in the process of loosening the sputum for the user.

[0154] See also Figure 23 and Figure 24 As shown, the sixth state (airway percussion), that is, the second positive pressure oscillation outflow state can form a large-scale positive pressure airflow oscillation, and the user can receive a large-scale positive pressure oscillation airflow. The valve plate 130 reciprocates between the first position and the second position relative to the first valve seat 110. Figure 23 As shown, when the valve plate 130 is in the first position, the first vent hole 131 of the valve plate 130 intersects with the third air passage opening 117 of the first valve seat 110 and the first air branch opening 1411 of the first plate 141, and the second vent hole 132 of the valve plate 130 intersects with the second air passage opening 116 of the first valve seat 110 and the third air branch opening 1413 of the first plate 141, respectively. The air flow path at this time is the same as the air flow path in the first working state. Figure 24 As shown, when the valve plate 130 is in the second position, the first air vent 131 of the valve plate 130 is tangent to the third air duct port 117 of the first valve seat 110 and the first air branch port 1411 of the first disk 141, respectively, and the second air vent 132 of the valve plate 130 is tangent to the second air duct port 116 of the first valve seat 110 and the third air branch port 1413 of the first disk 141, respectively. At this time, the third air vent 133 of the valve plate 130 is not connected with the first air duct port 115, the second air duct port 116, the third air duct port 117 and the fourth air duct port 118 of the first valve seat 110, and the fourth air vent 134 of the valve plate 130 is not connected with the first air duct port 115, the second air duct port 116, the third air duct port 117 and the fourth air duct port 118 of the first valve seat 110, and the user air vent output pressure is zero. When the valve plate 130 rotates back and forth between the first position and the second position relative to the first valve seat 110, the user's vent output pressure oscillates between zero and the target pressure value, and then the user inhales accompanied by positive pressure oscillations of the airflow, so as to better help the user loosen secretions (sputum) in the respiratory tract.

[0155] It should be noted that, see Figure 25As shown, in the sixth operating state, the valve disc 130 reciprocates with respect to the first valve seat 110 within an angle range of greater than or equal to 5° and less than or equal to 25°. The expectoration system controller 210 controls the operating angle and frequency of the motor 161 based on the pressure value fed back by the pressure detector 220, thereby achieving the parameter requirements set for the sixth operating state.

[0156] It should be noted that the six working states described in the embodiment of the present invention can be converted into each other by the control of the driving component, thereby reducing the replacement and debugging time between different devices to improve the efficiency of sputum removal.

[0157] See also Figure 26 As shown, an embodiment of the present invention provides a sputum coughing system 200, comprising a controller 210, a pressure detector 220 and the multi-way valve group structure 100 provided in the first aspect.

[0158] The pressure detector 220 is configured to detect the pressure of the third air communication port 126 corresponding to the third air communication passage 123 .

[0159] The controller 210 is electrically connected to the pressure detector 220 and the multi-way valve group structure 100 .

[0160] The pressure detector 220 may feed back the pressure value detected by the third air communication port 126 corresponding to the third air communication passage 123 to the controller 210 .

[0161] The controller 210 responds to the feedback signal of the pressure detector 220 and controls the start and stop and speed of the blower assembly in the multi-way valve group structure 100, and the start and stop position, speed and direction of the motor 161. In this way, the multi-way valve group structure 100 can switch between different working states, thereby reducing the debugging time and improving the sputum removal efficiency.

[0162] Example 2

[0163] The difference between the multi-way valve group structure in the second embodiment and the multi-way valve group structure in the first embodiment is that the structure of the first valve seat is different. Figure 27 As shown, in this embodiment, the first air duct of the first valve seat corresponds to an air duct opening, that is, the air duct opening corresponding to the first air duct is the fifth air duct opening 1107, and the second air duct corresponds to an air duct opening, that is, the air duct opening corresponding to the second air duct is the sixth air duct opening 1108. The fifth air duct opening 1107 is connected to the first connecting hole 1421 and the second connecting hole 1422 of the second disk 142, and the sixth air duct opening 1108 is connected to the third connecting hole 1423 and the fourth connecting hole 1424 of the second disk 142.

[0164] The fifth airway opening 1107 and the sixth airway opening 1108 are in the shape of an elongated strip.

[0165] The fifth airway opening 1107 and the sixth airway opening 1108 are respectively configured with a sealing ring to achieve sealing between the fifth airway opening 1107 and the sixth airway opening 1108 .

[0166] The structure and effects of other parts are the same as those in the first embodiment.

[0167] Example 3

[0168] The difference between the multi-way valve group structure in the third embodiment and the multi-way valve group structure in the first embodiment is that the structure of the first valve seat is different. Figure 28 As shown, in this embodiment, the first air duct 111 of the first valve seat corresponds to two air duct openings, that is, the two air duct openings corresponding to the first air duct 111 are respectively the first air duct opening 115 and the second air duct opening 116, and the second air duct corresponds to one air duct opening, that is, the air duct opening corresponding to the second air duct is the sixth air duct opening 1108, the first air duct opening 115 is connected to the first connecting hole 1421 of the second disk 142, the second air duct opening 116 is connected to the second connecting hole 1422 of the second disk 142, and the sixth air duct opening 1108 is connected to the third connecting hole 1423 and the fourth connecting hole 1424 of the second disk 142.

[0169] The sixth airway opening 1108 is in the shape of an elongated strip.

[0170] The first airway opening 115 and the second airway opening 116 are provided with a sealing ring (a first ring 1104 ), and the sixth airway opening 1108 is provided with a sealing ring, so as to achieve sealing between the sixth airway opening 1108 and the first airway opening 115 and the second airway opening 116 .

[0171] The structure and effects of other parts are the same as those in the first embodiment.

[0172] Example 4

[0173] The difference between the multi-way valve group structure in the fourth embodiment and the multi-way valve group structure in the first embodiment is that the multi-way valve group structure in the fourth embodiment may not have the first disk. Figure 29As shown, the first air communication channel 121 of the second valve seat in the fourth embodiment corresponds to one communication port, which is the first communication port 127. The second air communication channel 122 corresponds to one communication port, that is, the communication port corresponding to the second air communication channel 122 is the second communication port 128. The third air communication channel 123 corresponds to two communication ports, that is, the second communication port 1208 and the fifth communication port 1209. The first communication port 127 is connected to the first branch port 1411 of the first disk 141, the second communication port 128 is connected to the second branch port 1412 of the first disk 141, the fourth communication port 1208 is connected to the third branch port 1413 of the first disk 141, and the fifth communication port 1209 is connected to the fourth branch port 1414 of the first disk 141.

[0174] The fourth communication port 1208 and the fifth communication port 1209 are circular in shape.

[0175] It should be noted that the first communication port 127 , the second communication port 128 , the fourth communication port 1208 and the fifth communication port 1209 may not be provided with sealing rings.

[0176] The structure and effects of other parts are the same as those in the first embodiment.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-way valve group structure, characterized in that: include: A first valve seat is provided with a first air port, a second air port, a first air channel communicating with the first air port, and a second air channel communicating with the second air port, wherein the first air channel and the second air channel respectively have at least two air channel ports; The at least two airway openings corresponding to the first airway include a first airway opening and a second airway opening, the first airway opening and the second airway opening are connected, and the at least two airway openings corresponding to the second airway include a third airway opening and a fourth airway opening, the third airway opening and the fourth airway opening are connected; The second valve seat is provided with a first communicating air port, a second communicating air port, a third communicating air port, a first communicating air passage communicating with the first communicating air port, a second communicating air passage communicating with the second communicating air port, and a third communicating air passage communicating with the third communicating air port, wherein the first communicating air passage, the second communicating air passage, and the third communicating air passage each have at least one communicating port; a valve disc rotatably disposed between the first valve seat and the second valve seat, the valve disc comprising a first vent, a second vent, a third vent, and a fourth vent, wherein in a circumferential direction of the valve disc, the third vent and the fourth vent are disposed between the first vent and the second vent, and the third vent is disposed proximate to the first vent, and the fourth vent is disposed proximate to the second vent; The first vent hole and the second vent hole are symmetrically arranged relative to the center of the valve plate, and in the circumferential direction of the valve plate, the angle between the first vent hole and the third vent hole is greater than the angle between the second vent hole and the fourth vent hole; The diameter of the first vent is equal to the diameter of the second vent, the diameter of the third vent is equal to the diameter of the fourth vent, the diameter of the first vent is larger than the diameter of the third vent, and the diameters of the third vent and the fourth vent are both smaller than the diameters of the first airway opening, the second airway opening, the third airway opening, and the fourth airway opening; wherein, when all the third vents are connected to the first airway opening and all the fourth vents are connected to the third airway opening, the first vent is tangent to the second airway opening, and the second vent is tangent to the third airway opening; a fan assembly connected to the first valve seat, the fan assembly being in communication with the first air port and the second air port respectively; A drive assembly is connected to the valve disc, and the drive assembly is configured to drive the valve disc to rotate relative to the first valve seat and the second valve seat.

2. The multi-way valve group structure according to claim 1, characterized in that: The first airway has one or two airway openings, the second airway has one or two airway openings, the first communicating airway has one communicating opening, the second communicating airway has one communicating opening, and the third communicating airway has one or two communicating openings.

3. The multi-way valve group structure according to claim 1, characterized in that: A first disc is provided between the valve plate and the second valve seat, the first disc is provided with four air branches, each of the air branches is connected to one of the communication ports; and / or, A second disk is provided between the valve plate and the first valve seat. The second disk is provided with four communicating holes, and each communicating hole is communicated with one of the airway openings.

4. The multi-way valve group structure according to claim 3, characterized in that: A plurality of sealing rings are provided between the first disc and the second valve seat, and each of the sealing rings wraps one of the communication ports.

5. The multi-way valve group structure according to claim 3, characterized in that: A plurality of sealing rings are provided between the second disk and the first valve seat, and each of the sealing rings wraps one or two of the airway openings.

6. The multi-way valve group structure according to claim 3, characterized in that: The first disc is embedded in the second valve seat, the second disc is embedded in the first valve seat, a cavity is formed between the first disc and the second disc, and the valve plate is arranged in the cavity.

7. The multi-way valve group structure according to claim 1, characterized in that: The first vent hole, the second vent hole, the third vent hole, and the fourth vent hole are distributed on a circle concentric with the center of the valve plate.

8. A sputum coughing system, characterized in that: It comprises a controller, a pressure detector and the multi-way valve group structure according to any one of claims 1 to 7; The pressure detector is configured to detect the pressure of the third communicating air port corresponding to the third communicating air passage; The controller is electrically connected to the pressure detector and the multi-way valve group structure respectively.

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