Multi-way valve group structure and expectoration system

Abstract

The invention provides a multi-way valve group structure and an expectoration system, and relates to the technical field of medical instruments. The multi-way valve group structure comprises a first valve seat, a second valve seat, a valve plate, a fan assembly and a driving assembly, the valve plate is driven by the driving assembly to rotate between the first valve seat and the second valve seat, and switching of airflow among different air channels can be achieved through dynamic angle changes of the valve plate. Therefore, a user can receive positive-pressure airflow, negative-pressure airflow, zero-air-pressure airflow, negative-pressure oscillating airflow, small-amplitude positive-pressure oscillating airflow or large-amplitude positive-pressure oscillating airflow, the response speed of the system can be remarkably increased in the switching process of different airflow states, the sensitivity of the expectoration system is improved, the respiratory tract cleaning efficiency is improved, and the expectoration effect is improved. The expectoration assisting timeliness is 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 sputum expectoration system. Background Art

[0002] Sputum expectoration is a physiological mechanism for normal people to clear sputum from the respiratory tract. However, for some patients suffering from sputum expectoration dysfunction diseases, such as patients with neuromuscular diseases with weakened sputum expectoration ability and patients with mechanical ventilation intubation, if sputum is not discharged from the respiratory tract in time, thick sputum and sputum crusts are likely to accumulate and block the bronchial lumen, seriously affecting the patient's ventilation function, aggravating respiratory failure, and even causing secondary atelectasis. Therefore, it is very necessary to use a sputum expectoration system to clear airway secretions.

[0003] In the related art, the sputum expectoration system includes a valve seat and a valve core, wherein the valve core is configured with a plurality of gas channels, and the positive and negative pressure gas paths are switched by the relative movement of the valve core with respect to the valve seat.

[0004] However, the sputum expectoration system has poor sensitivity in the mode of higher switching frequency, and the efficiency of airway cleaning is relatively low in actual use, which cannot meet the needs of patients for sputum expectoration. Summary of the Invention

[0005] Embodiments of the present invention provide a multi-way valve group structure and a sputum expectoration system to solve the problems that the sputum expectoration system has poor sensitivity in the mode of higher switching frequency, the efficiency of airway cleaning is relatively low in actual use, and it cannot meet the needs of patients for sputum expectoration.

[0006] In a first aspect, embodiments of the present invention provide a multi-way valve group structure, including:

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

[0008] A second valve seat, provided with a first communication air port, a second communication air port, a third communication air port, a first communication airway communicating with the first communication air port, a second communication airway communicating with the second communication air port, and a third communication airway communicating with the third communication air port, wherein the first communication airway, the second communication airway, and the third communication airway respectively have at least one communication port;

[0009] A valve piece, rotatably arranged between the first valve seat and the second valve seat, and the valve piece has a plurality of ventilation holes;

[0010] A fan assembly, connected to the first valve seat, and the fan assembly is respectively communicated with the first air port and the second air port;

[0011] A driving component, connected to the valve plate, and the driving component is configured to drive the valve plate to rotate relative to the first valve seat and the second valve seat.

[0012] In a possible implementation manner, the first air passage has one or two of the air passage openings, the second air passage has one or two of the air passage openings, the first communication air passage has one communication opening, the second communication air passage has one communication opening, and the third communication air passage has one or two of the communication openings.

[0013] In a possible implementation manner, a first disk is provided between the valve plate and the second valve seat, the first disk is provided with four branch air ports, and each branch air port communicates with one of the communication openings; and / or, a second disk is provided between the valve plate and the first valve seat, the second disk is provided with four communication holes, and each communication hole communicates with one of the air passage openings.

[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 openings.

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

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

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

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

[0019] In a possible implementation manner, 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 ventilation hole, the second ventilation hole, the third ventilation hole, and the fourth ventilation hole are distributed on a circumference concentric with the center of the valve plate.

[0021] In a second aspect, an embodiment of the present invention provides a sputum expectoration system, including 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 communication air port corresponding to the third communication airway;

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

[0024] For the multi-way valve group structure and the sputum expectoration system provided by the embodiments of the present invention, a plurality of airways are provided on both the first valve seat and the second valve seat, a valve plate is provided between the first valve seat and the second valve seat, and a plurality of ventilation holes are provided on the valve plate. When the driving assembly 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 sputum expectoration system and the efficiency of respiratory tract cleaning.

[0025] By providing the airways on the first valve seat and the second valve seat and providing a plurality of ventilation holes on the valve plate, this separated design can reduce the structural complexity of the valve plate.

[0026] By the dynamic angle change of the valve plate, the switching of the air flow between different airways can be realized, so that the user can receive a positive-pressure air flow, a negative-pressure air flow, a zero-pressure air flow, a negative-pressure oscillating air flow, a small-amplitude positive-pressure oscillating air flow or a large-amplitude positive-pressure oscillating air flow, which can significantly improve the system response speed and ensure the timeliness of sputum expectoration assistance.

[0027] In the related art, the sputum expectoration system adopts a combined structure of a valve seat and a valve core. An airway is provided in the valve core in the related art. When realizing the airway switching, due to the large mass of the valve core, the switching sensitivity is reduced. Especially in the MIE sputum expectoration mode, positive and negative pressure switching needs to be completed within a short time, and the requirement for switching sensitivity is particularly prominent. For the multi-way valve group structure provided by the embodiments of the present invention, the airways are provided on the first valve seat and the second valve seat, and a plurality of ventilation holes are provided on the valve plate. The path of the air flow in the ventilation holes of the valve plate is short, which can reduce the air flow resistance and improve the switching sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 Schematic diagram of the multi-way valve group structure provided in the first embodiment of the present invention;

[0030] Figure 2 is Figure 1 exploded schematic diagram of the multi-way valve group structure in

[0031] Figure 3 is Figure 1 the first cross-sectional view of the multi-way valve group structure in

[0032] Figure 4 is Figure 1 the second cross-sectional view of the multi-way valve group structure in

[0033] Figure 5 Schematic diagram of the first valve seat provided in the first embodiment of the present invention;

[0034] Figure 6 Schematic diagram of the second valve seat provided in the first embodiment of the present invention;

[0035] Figure 7 Schematic diagram of the first disk provided in the first embodiment of the present invention;

[0036] Figure 8 Schematic diagram of the second disk provided in the first embodiment of the present invention;

[0037] Figure 9 Schematic diagram of the turbine fan provided in the first embodiment of the present invention;

[0038] Figure 10 Schematic diagram of the fan seat provided in the first embodiment of the present invention;

[0039] Figure 11 Schematic diagram of the rotating shaft provided in the first embodiment of the present invention;

[0040] Figure 12 Schematic diagram of the bearing seat provided in the first embodiment of the present invention;

[0041] Figure 13 Schematic diagram of the valve plate provided in the first embodiment of the present invention;

[0042] Figure 14 Schematic diagram of the first working state of the multi-way valve group structure provided in the first embodiment of the present invention;

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

[0044] Figure 16 Schematic diagram of the 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 airflow waveform of the multi-way valve group structure provided in the first embodiment of the present invention Figure 1 ;

[0046] Figure 18 Schematic diagram of the fourth working state of the multi-way valve group structure provided in the first embodiment of the present invention Figure 1 ;

[0047] Figure 19 Schematic diagram of the fourth working state of the multi-way valve group structure provided in the first embodiment of the present invention Figure 2 ;

[0048] Figure 20 Schematic diagram of the fifth working state of the multi-way valve group structure provided in the first embodiment of the present invention Figure 1 ;

[0049] Figure 21 Schematic diagram of the fifth working state of the multi-way valve group structure provided in the first embodiment of the present invention Figure 2 ;

[0050] Figure 22 Schematic diagram of the airflow waveform of the multi-way valve group structure provided in the first embodiment of the present invention Figure 2 ;

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

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

[0053] Figure 25 Schematic diagram of the airflow waveform of the multi-way valve group structure provided in the first embodiment of the present invention Figure 3 ;

[0054] Figure 26 Schematic diagram of the expectoration system provided in the first embodiment of the present invention;

[0055] Figure 27 Schematic diagram of the first valve seat of the multi-way valve group structure provided in the second embodiment of the present invention;

[0056] Figure 28 Schematic diagram of the first valve seat of the multi-way valve group structure provided in the third embodiment of the present invention;

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

[0058] Description of reference numerals:

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

[0060] 110 - First valve seat; 111 - First air passage; 112 - Second air passage; 113 - First air port; 114 - Second air port; 115 - First air passage port; 116 - Second air passage port; 117 - Third air passage port; 118 - Fourth air passage 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 passage port; 1108 - Sixth air passage port;

[0061] 120 - Second valve seat; 121 - First connecting air passage; 122 - Second connecting air passage; 123 - Third connecting air passage; 124 - First connecting air port; 125 - Second connecting air port; 126 - Third connecting air port; 127 - First connecting port; 128 - Second connecting port; 129 - Third connecting 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 connecting port; 1209 - Fifth connecting port;

[0062] 130 - Valve disc; 131 - First ventilation hole; 132 - Second ventilation hole; 133 - Third ventilation hole; 134 - Fourth ventilation hole; 135 - Valve disc mounting hole;

[0063] 141 - First disc; 1411 - First branch air port; 1412 - Second branch air port; 1413 - Third branch air port; 1414 - Fourth branch air port; 1415 - First connecting hole; 1416 - Second connecting hole;

[0064] 142 - Second disc; 1421 - First connecting hole; 1422 - Second connecting hole; 1423 - Third connecting hole; 1424 - Fourth connecting hole; 1425 - Groove;

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

[0066] 161 - Electric motor; 162 - Motor base; 163 - Coupling; 164 - Rotating shaft; 1641 - First installation section; 1642 - Second installation section; 1643 - Third installation section; 1644 - Threaded section; 1645 - Circlip groove; 1646 - Installation groove; 165 - Bearing; 166 - Bearing housing; 1661 - Bearing housing installation hole; 1662 - First fixing hole; 1663 - Second fixing hole; 1664 - Threaded hole; 167 - Bearing housing sealing ring

[0067] 200 - Sputum expectoration system; 210 - Controller; 220 - Pressure detector Detailed implementation manners

[0068] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention

[0069] It should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined

[0070] In the present invention, unless otherwise clearly defined and limited, the terms such as "installation", "connection", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances

[0071] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0072] In the above description, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection 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 can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0073] As described in the background art, the expectoration system has poor sensitivity in the mode of higher switching frequency. Especially when there is positive-negative pressure switching and large-amplitude oscillation, it cannot quickly reach the pressure value and oscillation amplitude required by the patient, resulting in low efficiency of clearing the patient's respiratory tract and unable to meet the patient's expectoration needs. Through research, it is found that the reason for this problem is that the valve core is configured with multiple gas channels, making the mass of the valve core relatively large. When the driving component drives the valve core to rotate, the valve core responds slowly, resulting in poor sensitivity of the expectoration system, low efficiency of clearing the respiratory tract in actual use, and unable to meet the patient's expectoration needs.

[0074] To solve the above problems, the multi-way valve group structure and expectoration system provided by the embodiments of the present invention set the air passage 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, and the driving component drives the valve plate to rotate relative to the first valve seat and the second valve seat, realizing efficient driving force transmission and optimized sealing clearance, thereby improving the overall switching sensitivity, reducing noise, and increasing the efficiency of clearing the respiratory tract.

[0075] The following will specifically describe the multi-way valve group structure and expectoration system provided by the embodiments of the present invention in conjunction with specific embodiments.

[0076] Embodiment 1

[0077] In the first aspect, refer to 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 as shown).

[0079] See 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 air port 113, a second air port 114, a first air passage 111 communicating with the first air port 113, and a second air passage 112 communicating with the second air port 114.

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

[0082] Exemplarily, the first air port 113 and the second air port 114 are provided at one end of the first valve seat 110 in the +Y-axis direction. The first air passage 111 and the second air passage 112 can be provided inside the first valve seat 110. The two air passage openings corresponding to the first air passage 111 are a first air passage opening 115 and a second air passage opening 116 respectively, and the first air passage opening 115 and the second air passage opening 116 are connected. The two air passage openings corresponding to the second air passage 112 are a third air passage opening 117 and a fourth air passage opening 118 respectively, and the third air passage opening 117 and the fourth air passage opening 118 are connected. The first air passage opening 115, the second air passage opening 116, the third air passage opening 117, and the fourth air passage opening 118 are all provided 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 communicated with the first air passage opening 115 and the second air passage opening 116 through the first air passage 111. The second air port 114 is communicated with the third air passage opening 117 and the fourth air passage opening 118 through the second air passage 112.

[0084] In a possible implementation manner, see Figure 5 as shown, along the circumferential direction of the first valve seat 110, that is, along the circumferential direction of the first valve seat sealing surface 1100, the four air passage openings on the first valve seat 110 are equally spaced, that is, the first air passage opening 115, the third air passage opening 117, the fourth air passage opening 118, and the second air passage opening 116 are equally spaced. Such a setting can simplify the processing technology of the first valve seat 110 and reduce the processing complexity.

[0085] See Figure 6As shown, the material of the second valve seat 120 can be plastic.

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

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

[0088] Exemplarily, the first communication air port 124 can be an air inlet, the second communication air port 125 can be an exhaust port, the third communication air port 126 can be a user ventilation port. The first communication air port 124 and the second communication air port 125 are provided at one end of the second valve seat 120 in the +Y axis direction, and the third communication air port 126 is provided at one end of the second valve seat 120 in the +X axis direction. The first communication air passage 121, the second communication air passage 122, and the third communication air passage 123 can be provided inside the second valve seat 120.

[0089] The communication port corresponding to the first communication air passage 121 is the first communication port 127, the communication port corresponding to the second communication air passage 122 is the second communication port 128, and the communication port corresponding to the third communication air passage 123 is the 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, and the shape of the second valve seat sealing surface 1200 is circular.

[0090] The shapes of the first communication port 127 and the second communication port 128 are circular. The shape of the third communication port 129 is elongated.

[0091] The material of the valve plate 130 is metal. The valve plate 130 is arranged between the first valve seat 110 and the second valve seat 120, and the valve plate 130 is rotatably arranged relative to the first valve seat 110 and the second valve seat 120. The valve plate 130 has a plurality of ventilation holes.

[0092] Exemplarily, the valve plate 130 can have four ventilation holes.

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

[0094] Exemplarily, refer to Figure 9and Figure 10 As shown in Figure 10 , the fan assembly includes a turbine fan 151 and a fan base 152. The turbine fan 151 has a circular air outlet 1511 and an air inlet 1512. The fan base 152 is made of silica gel and has a first interface 1521 and a second interface 1522. The turbine fan 151 is mounted on the 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, and the air inlet 1512 communicates with the second air port 114 of the first valve seat 110 through the second interface 1522 and a connecting member 154.

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

[0096] The drive assembly is connected to the valve plate 130. The drive assembly is configured to drive the valve plate 130 to rotate relative to the first valve seat 110 and the second valve seat 120. With such a setting, through the dynamic angle change of the valve plate, the switching of the air flow between different air passages can be realized, so that the user can receive positive-pressure air flow, negative-pressure air flow, zero-pressure air flow, negative-pressure oscillating air flow, small-amplitude positive-pressure oscillating air flow or large-amplitude positive-pressure oscillating air flow, which can significantly improve the system response speed and ensure the timeliness of sputum expectoration assistance.

[0097] In the multi-way valve group structure 100 provided by the embodiment of the present invention, by providing a plurality of air passages on the first valve seat 110 and the second valve seat 120, a valve plate 130 is provided between the first valve seat 110 and the second valve seat 120, and the valve plate 130 is provided with a plurality of ventilation holes. When the drive assembly drives the valve plate 130 to rotate relative to the first valve seat 110 and the second valve seat 120, the valve plate 130 has a fast response, thereby improving the sensitivity of the sputum expectoration system and the efficiency of airway cleaning.

[0098] In the related art, the sputum expectoration system adopts a combined structure of a valve seat and a valve core. An air passage is provided in the valve core in the related art. When realizing the switching of the air passage, due to the large mass of the valve core, the switching sensitivity is reduced; for example, in the Mechanical Insufflation Exsufflation (MIE) sputum expectoration mode, positive and negative pressure switching needs to be completed in a short time; for example, in the high-frequency oscillation mode, the valve core needs to be rotated at a high frequency and a large amplitude, and the requirement for switching sensitivity is particularly prominent. In the multi-way valve group structure provided by the embodiment of the present invention, the air passages are provided on the first valve seat and the second valve seat, the valve plate is provided with a plurality of ventilation holes, and the path of the air flow in the ventilation holes of the valve plate is short, which can reduce the air flow resistance and improve the switching sensitivity.

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

[0100] Among them, a circular first disc 141 is provided on one side of the end face of the second valve seat 120. See Figure 7 As shown, the first disc 141 is provided with a first air branch port 1411, a second air branch port 1412, a third air branch port 1413 and a fourth air branch port 1414. The first air branch port 1411 is communicated with the first communication port 127, the second air branch port 1412 is communicated with the second communication port 128, and the third air branch port 1413 and the fourth air branch port 1414 are communicated with the third communication port 129.

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

[0102] The shapes of the first communication air port 124, the second communication air port 125, the third communication air 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.

[0103] See Figure 8 As shown, the second disc 142 is provided with four communication holes, and each communication hole is communicated with an air passage port of the first valve seat 110.

[0104] The shape of the communication hole is circular. The diameters of the communication hole, 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 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 disc 142 is fixedly connected to the first disc 141.

[0107] After the second disk 142 is fixed to the first disk 141, the four communication holes of the second disk 142 are respectively aligned with the first air port 1411, the second air port 1412, the third air port 1413, and the fourth air port 1414 of the first disk 141. That is, the axis of the first communication hole 1421 coincides with the axis of the second air port 1412, the axis of the second communication hole 1422 coincides with the axis of the third air port 1413, the axis of the third communication hole 1423 coincides with the axis of the first air port 1411, and the axis of the fourth communication hole 1424 coincides with the axis of the fourth air port 1414.

[0108] The four communication holes of the second disk 142 are respectively communicated with the four air passage ports of the first valve seat 110. That is, the first communication hole 1421 is communicated with the first air passage port 115, the second communication hole 1422 is communicated with the second air passage port 116, the third communication hole 1423 is communicated with the third air passage port 117, and the fourth communication hole 1424 is communicated with the fourth air passage port 118.

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

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

[0111] Among them, the materials of the first disk 141, the second disk 142, and the valve plate 130 are all metals. With such a setting, since the first disk 141 and the second disk 142 are made of metal, the surfaces of the first disk 141 in contact with the valve plate 130 and the second disk 142 in contact with the valve plate 130 can be processed into smooth surfaces, which can ensure the overall airtightness and low operating noise during the operation of the multi-way valve group structure 100.

[0112] It should be noted that in the related art, the expectoration system adopts a combined structure of a valve seat and a valve core. The material of the valve seat in the related art is plastic, and the valve core in the related art is metal. The surface of the plastic valve seat in contact with the valve core is not processed smoothly, resulting in high operating noise during the operation of the expectoration system in the related art.

[0113] The second disk 142 is provided with a groove 1425. After the second disk 142 is fixed to the first disk 141, the second disk 142 and the first disk 141 enclose a cavity.

[0114] In some examples, refer to 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 communication port 127 is located in the first sealing groove 1201, the second communication port 128 is located in the second sealing groove 1202, and the third communication 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 communication port 127, the second sealing ring 1205 wraps the second communication port 128, and the third sealing ring 1206 wraps the third communication port 129, realizing the sealing between the first communication port 127, the second communication port 128 and the third communication port 129.

[0115] It should be noted that in the related art, the expectoration system adopts a combined structure of a valve seat and a valve core. The material of the valve seat in the related art is plastic, the valve core in the related art is metal, and there is an air passage in the valve core in the related art, resulting in a relatively large mass of the valve core in the related art. When the motor drives the valve core to rotate, it will reduce the service life of the motor and increase the use cost of the overall equipment. In this embodiment, the materials of the first valve seat 110 and the second valve seat 120 are plastic, the materials of the valve plates 130 are all metal, multiple air passages are provided on the first valve seat 110 and the second valve seat 120, and multiple ventilation holes are provided on the valve plates 130, which can reduce the mass of the valve plates 130, thereby improving the service life of the motor and reducing the use cost of the overall equipment.

[0116] In some examples, the first disk 141 is fixed to the second valve seat 120 through the second connection hole 1416, which can make the first disk 141 embedded in the second valve seat 120.

[0117] In some examples, refer to Figure 2 and Figure 5 As shown, the first valve seat 110 is provided with a first groove 1101 and a second groove 1102 (refer to Figure 5 shown). The first air passage port 115 and the second air passage port 116 are located inside the first groove 1101, and the third air passage port 117 and the fourth air passage port 118 are located inside the second groove 1102. A sealing ring is installed in each of the first groove 1101 and the second groove 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] Refer to 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 fix the first valve seat 110 and the second valve seat 120. After being fixed, the second disk 142 can be embedded in the first valve seat 110. A first ring 1104 and a second ring 1105 are arranged between the first valve seat 110 and the first disk 141. The first ring 1104 wraps the first air passage port 115 and the second air passage port 116, and the second ring 1105 wraps the third air passage port 117 and the fourth air passage port 118, so as to realize the sealing between the two air passage ports corresponding to the first air passage 111 and the two air passage ports corresponding to the second air passage 112, thereby realizing the sealing between the first air port 113 and the second air port 114.

[0119] The first valve seat 110 is provided with a third groove 1103. The first groove 1101 and the second groove 1102 are located inside the third groove 1103, and a third ring 1106 is installed in the third groove 1103. After the first valve seat 110 and the second valve seat 120 are fixed, the third ring 1106 is used to realize the sealing between the first valve seat 110 and the second valve seat 120.

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

[0121] See Figure 11 As shown, one end of the rotating shaft 164 is provided with a first mounting section 1641, and the first mounting section 1641 is inserted into the other end of the coupling 163 and then fixed. Both ends of the rotating shaft 164 are provided with snap ring grooves 1645. Two second mounting sections 1642 are arranged between the two snap ring grooves 1645, and a bearing 165 is respectively installed on the two second mounting sections 1642. The bearing 165 can be limited by snapping a snap ring into the snap ring groove 1645. The rotating shaft 164 can be provided with a mounting groove 1646, and a sealing ring (for example, a circular O-ring) can be installed in the mounting groove 1646 to realize the sealing of the rotating shaft 164.

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

[0123] In some examples, the first disc 141 is fixedly connected to the threaded hole 1664 of the bearing housing 166 through the first connection hole 1415.

[0124] In some examples, refer to Figure 11 and Figure 13 As shown, the valve plate 130 is provided with a valve plate mounting hole 135. The rotating shaft 164 is provided with a connected third mounting section 1643 and a threaded section 1644. The third mounting section 1643 of the rotating shaft 164 is inserted into the valve plate mounting hole 135 of the valve plate 130, and the valve plate 130 is fastened by screwing a nut into the threaded section 1644.

[0125] In a possible implementation manner, refer to Figure 13 As shown, the multiple 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 shape of the valve plate 130 is circular. In the circumferential direction of the valve plate 130, the third vent hole 133 and the fourth vent hole 134 are arranged 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, which can make the first vent hole 131 communicate with the third airway port 117, the third communication hole 1423, the first branch air port 1411 and the first communication port 127, and the second vent hole 132 communicate with the second airway port 116, the second communication hole 1422, the third branch air port 1413 and the third communication port 129. At this time, neither the third vent hole 133 nor the fourth vent hole 134 communicates with the first airway port 115, the second airway port 116, the third airway port 117 and the fourth airway port 118.

[0128] Alternatively, 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 ventilation hole 131 can communicate with the first airway port 115, the first communication hole 1421, the second branch airway port 1412, and the second communication port 128, and the second ventilation hole 132 can communicate with the fourth airway port 118, the fourth communication hole 1424, the fourth branch airway port 1414, and the third communication port 129. At this time, neither the third ventilation hole 133 nor the fourth ventilation hole 134 communicates with the first airway port 115, the second airway port 116, the third airway port 117, and the fourth airway port 118.

[0129] Alternatively, 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 third ventilation hole 133 can communicate with the first airway port 115, the first communication hole 1421, the second branch airway port 1412, and the second communication port 128, and the fourth ventilation hole 134 can communicate with the third airway port 117, the third communication hole 1423, the first branch airway port 1411, and the first communication port 127. At this time, neither the first ventilation hole 131 nor the second ventilation hole 132 communicates with the first airway port 115, the second airway port 116, the third airway port 117, and the fourth airway port 118.

[0130] In a possible implementation manner, refer to Figure 13 As shown, the first ventilation hole 131 and the second ventilation hole 132 are symmetrically arranged with respect to the center of the valve plate 130. That is to say, in the circumferential direction of the valve plate 130, the angle between the first ventilation hole 131 and the second ventilation hole 132 is 180°. With such an arrangement, 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 centers of the first ventilation hole 131 and the second ventilation hole 132 can be aligned with the centers of two of the four airway ports on the first valve seat 110, so that the first ventilation hole 131 and the second ventilation hole 132 can communicate with two of the four airway ports on the first valve seat 110.

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

[0132] In some examples, 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 or equal to 64.5° and less than or equal to 67.5°. Exemplarily, in the circumferential direction of the valve plate 130, the angle between the first vent hole 131 and the third vent hole 133 can take values such as 64.5°, 65°, 65.5°, 66°, 67°, or 67.5°. When the angle between the first vent hole 131 and the third vent hole 133 in the circumferential direction of the valve plate 130 is less than 64.5°, there will be a problem that in the third working state, the first vent hole 131 and the third vent hole 133 are connected to two of the four airway ports on the first valve seat 110, resulting in the inability of the expectoration system to achieve the pause function and affecting user safety. When the angle between the first vent hole 131 and the third vent hole 133 in the circumferential direction of the valve plate 130 is greater than 67.5°, there will be a problem that in the third working state, the first vent hole 131 and the third vent hole 133 are connected to two of the four airway ports on the first valve seat 110, resulting in the inability of the expectoration system to achieve the pause function and affecting user safety. By restricting the angle between the first vent hole 131 and the third vent hole 133 in the circumferential direction of the valve plate 130, it is possible to avoid the simultaneous connection of the first vent hole 131 and the third vent hole 133 to two of the four airway ports on the first valve seat 110 in the third working state, and the pause function of the expectoration system can be achieved to ensure user safety.

[0133] In some examples, in the circumferential direction of the valve plate 130, the angle between the second vent hole 132 and the fourth vent hole 134 is greater than or equal to 21.5° and less than 34°. For example, in the circumferential direction of the valve plate 130, the value of the angle between the second vent hole 132 and the fourth vent hole 134 is 21.5°, 22°, 23°, 25°, 27°, 29°, 30°, 31°, 32°, 33° or 34°, etc. If the angle between the second vent hole 132 and the fourth vent hole 134 in the circumferential direction of the valve plate 130 is less than 21.5°, there will be a problem that in the third working state, the second vent hole 132 and the fourth vent hole 134 are connected to two of the four airway ports on the first valve seat 110, resulting in the inability of the expectoration system to achieve the pause function and affecting user safety. If the angle between the second vent hole 132 and the fourth vent hole 134 in the circumferential direction of the valve plate 130 is greater than 34°, there will be a problem that in the third working state, the second vent hole 132 and the fourth vent hole 134 are connected to two of the four airway ports on the first valve seat 110, resulting in the inability of the expectoration system to achieve the pause function and affecting user safety. By restricting the angle between the second vent hole 132 and the fourth vent hole 134 in the circumferential direction of the valve plate 130, it is possible to avoid the second vent hole 132 and the fourth vent hole 134 being simultaneously connected to two of the four airway ports on the first valve seat 110 in the third working state, and the pause function of the expectoration system can be achieved to ensure user safety.

[0134] In a possible implementation manner, in the axial direction of the valve plate 130, the projection of an airway port corresponding to the first airway 111 coincides with the projection of the communication port corresponding to the second communication airway 122, that is, in the axial direction of the valve plate 130, the projection of the first airway port 115 coincides with the projection of the second communication port 128.

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

[0136] In the axial direction of the valve plate 130, the projections of the other airway port corresponding to the first airway 111 and the other airway port corresponding to the second airway 112 are located within the projection area of the third communication port 129, that is, in the axial direction of the valve plate 130, the projections of the second airway port 116 and the fourth airway port 118 are located within the projection area of the third communication port 129. With such a setting, through the dynamic angle change of the valve plate, different connection states between multiple airways can be achieved, so that the mutual conversion of different working states of the multi-way valve group structure 100 can be realized, thereby reducing the replacement and debugging time between different devices to improve the expectoration efficiency.

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

[0138] Among them, in some examples, the diameter of the first ventilation hole 131 is greater than the diameter of the third ventilation hole 133. With such a setting, when the third ventilation hole 133 is completely communicated with the first airway opening 115 and the fourth ventilation hole 134 is completely communicated with the third airway opening 117, the first ventilation hole 131 can be tangent to the second airway opening 116, and the second ventilation hole 132 can be tangent to the third airway opening 117, so that the expectoration system pause function can be realized to ensure user safety.

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

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

[0141] In a possible implementation, the first airway 111 and the second airway 112 are parallel to each other, and the extending direction of the first airway 111 can be the Y-axis direction.

[0142] In the extending direction of the first airway 111, the distance between the two airway openings corresponding to the first airway 111 is equal to the distance between the two airway openings corresponding to the second airway 112. With such a setting, the processing of the two airways on the first valve seat 110 can be simplified, and the production cost can be reduced.

[0143] Next, with reference to the drawings, different working states of the multi-way valve group structure 100, that is, different communication states, will be described.

[0144] See Figure 14 As shown, in the first working state, that is, the positive pressure air outlet state, continuous positive pressure air outlet can be achieved, and the user can receive positive pressure air flow. The valve plate 130 rotates counterclockwise relative to the first valve seat 110 ( Figure 14 in the direction indicated by the arrow in Figure 14Middle position. The centers of the first ventilation hole 131 of the valve plate 130, the third airway port 117 of the first valve seat 110, the center of the third communication hole 1423 of the second disk 142, and the center of the first air supply port 1411 of the first disk 141 are all located on the axis of the first ventilation hole 131, so that the first ventilation hole 131 of the valve plate 130 communicates with the third airway port 117 of the first valve seat 110 and the first communication port 127 of the second valve seat 120 respectively. The centers of the second ventilation hole 132 of the valve plate 130, the second airway port 116 of the first valve seat 110, the second communication hole 1422 of the second disk 142, and the center of the third air supply port 1413 of the first disk 141 are located on the axis of the second ventilation hole 132, so that the second ventilation hole 132 of the valve plate 130 communicates with the second airway port 116 of the first valve seat 110 and the third communication port 129 of the second valve seat 120 respectively. When the turbo fan 151 operates, a negative pressure is generated at the air inlet 1512 for suction, and the gas enters the first communication airway 121 from the first communication air inlet 124 of the second valve seat 120, that is, the gas enters the first communication airway 121 from the air inlet. After that, the gas sequentially passes through the first communication port 127, the first ventilation hole 131, and the third airway port 117 of the first valve seat 110 to enter the second airway 112 of the first valve seat 110. After that, the gas enters the turbo fan 151 from the second air port 114 corresponding to the second airway 112. After that, the gas enters the first airway 111 from the first air port 113 corresponding to the first airway 111. After that, the gas sequentially passes through the second airway port 116 of the first valve seat 110, the second ventilation hole 132 of the valve plate 130, and the third communication port 129 of the second valve seat 120 to enter the third communication airway 123 of the second valve seat 120. After that, it is discharged from the third communication air port 126 of the second valve seat 120, that is, discharged from the user ventilation port. In this way, the gas enters from the air inlet and is discharged from the user ventilation port, and a positive pressure air flow can be provided to the user during the user's inhalation process.

[0145] See Figure 15 As shown, in the second working state, that is, the negative pressure suction state can continuously suck with negative pressure, and the user can receive a negative pressure air flow. In the first working state, the valve plate 130 rotates 90° counterclockwise relative to the first valve seat 110, and the valve plate 130 can be located at Figure 15Middle position. The centers of the first ventilation holes 131 of the valve plate 130, the centers of the first air passage ports 115 of the first valve seat 110, the centers of the first communication holes 1421 of the second disk 142, and the centers of the second air branch ports 1412 of the first disk 141 are all located on the axis of the first ventilation hole 131, so that the first ventilation holes 131 of the valve plate 130 communicate with the first air passage ports 115 of the first valve seat 110 and the second communication ports 128 of the second valve seat 120 respectively. The centers of the second ventilation holes 132 of the valve plate 130, the centers of the fourth air passage ports 118 of the first valve seat 110, the centers of the fourth communication holes 1424 of the second disk 142, and the centers of the fourth air branch ports 1414 of the first disk 141 are all located on the axis of the second ventilation hole 132, so that the second ventilation holes 132 of the valve plate 130 communicate with the fourth air passage ports 118 of the first valve seat 110 and the third communication ports 129 of the second valve seat 120 respectively. When the turbo fan 151 operates, a negative pressure is generated at the air inlet 1512 to suck air. The gas enters the third communication air passage 123 from the third communication air port 126 of the second valve seat 120, that is, the gas enters the third communication air passage 123 from the user ventilation port of the second valve seat 120. After that, the gas sequentially passes through the third communication port 129, the second ventilation hole 132 of the valve plate 130, and the fourth air passage port 118 of the first valve seat 110 to enter the second air passage 112 of the first valve seat 110. After that, the gas enters the turbo fan 151 from the second air port 114 corresponding to the second air passage 112. After that, the gas enters the first air passage 111 from the first air port 113 corresponding to the first air passage 111. After that, the gas sequentially passes through the first air passage port 115 of the first valve seat 110, the first ventilation hole 131 of the valve plate 130, and the second communication port 128 of the second valve seat 120 to enter the second communication air passage 122 of the second valve seat 120, and then 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 ventilation port and is discharged from the exhaust port, and negative pressure air flow can be provided to the user during coughing. By switching between the first working state and the second working state at a certain frequency, it can assist the user to discharge secretions (sputum) faster and more thoroughly during coughing.

[0146] See Figure 16 As shown, in the third working state, that is, the apnea state, no pressure is output at the user ventilation port. In the second working state, the valve plate 130 rotates counterclockwise by 61° relative to the first valve seat 110, and the valve plate 130 can be located at Figure 16Middle position. The third ventilation holes 133 of the valve plate 130 are respectively communicated with the first air duct port 115 of the first valve seat 110, the first communication hole 1421 of the second disk 142, the second air branch port 1412 of the first disk 141, and the second communication port 128 of the second valve seat 120. The fourth ventilation holes 134 of the valve plate 130 are respectively communicated with the third air duct port 117 of the first valve seat 110, the third communication hole 1423 of the second disk 142, the first air branch port 1411 of the first disk 141, and the first communication port 127 of the second valve seat 120. When the turbine fan 151 operates, a negative pressure is generated at the air inlet 1512 to suck air. The gas enters the first communication air duct 121 from the first communication air port 124 of the second valve seat 120, that is, the gas enters the first communication air duct 121 from the air inlet. After that, the gas sequentially passes through the first communication port 127, the fourth ventilation hole 134, and the third air duct port 117 of the first valve seat 110 to enter the second air duct 112 of the first valve seat 110. After that, the gas enters the turbine fan 151 from the second air port 114 corresponding to the second air duct 112. After that, the gas enters the first air duct 111 from the first air port 113 corresponding to the first air duct 111. After that, the gas sequentially passes through the first air duct port 115 of the first valve seat 110, the third ventilation hole 133 of the valve plate 130, and the second communication port 128 of the second valve seat 120 to enter the second communication air duct 122 of the second valve seat 120, and then 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 air inlet and is discharged from the exhaust port, and can be output to the user without pressure. The third working state is used to provide an adaptive rest mode for the user after the end of a single exhalation and inhalation cycle, which can help the user exert force for the next expectoration; at the same time, it can also prevent the fan assembly from being airtight and causing damage to the fan assembly, and extend the service life of the turbine fan 151.

[0147] During the operation in the third working state, the first ventilation hole 131 is tangent to the second air duct port 116, the second ventilation hole 132 is tangent to the third air duct port 117, the third ventilation holes 133 are all located inside the first air duct port 115 of the first valve seat 110, and the fourth ventilation holes 134 are all located inside the third air duct port 117 of the first valve seat 110.

[0148] See Figure 17 As shown, the first working state, the second working state, and the third working state periodically provide a positive pressure air flow for inhalation, a negative pressure air flow for exhalation, and no air flow output. This combined working state combines the MIE mode and the rest mode, which can improve the user's compliance and the comfort of using the device to assist expectoration.

[0149] See Figure 18 and Figure 19As shown, in the fourth working state, i.e., the first positive pressure oscillating air outlet state, a small-amplitude positive pressure air flow oscillation can be formed, and the user can receive a small-amplitude positive pressure oscillating air flow. The valve plate 130 reciprocally rotates relative to the first valve seat 110 between the positions of Figure 18 and Figure 19 . The air flow path in the fourth working state is the same as that in the first working state. The difference between the fourth working state and the first working state is that the intersecting area between the first ventilation hole 131 of the valve plate 130 and the third air duct port 117 of the first valve seat 110 and the first air branch port 1411 of the first disk 141 continuously changes, and the intersecting area between the second ventilation hole 132 of the valve plate 130 and the second air duct port 116 of the first valve seat 110 and the third air branch port 1413 of the first disk 141 continuously changes, so that the gas flow area continuously changes, causing the output gas pressure to continuously change, thereby generating an output gas oscillation. Then, during the user's inhalation process, a small-amplitude positive pressure air flow oscillation is formed in the respiratory tract, which is beneficial to loosening the secretions in the respiratory tract and can also improve the comfort of the user during inhalation.

[0150] It should be noted that in the fourth working state, the angle range of the reciprocal rotation of the valve plate 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 according to the pressure value feedback by the pressure detector 220, so as to meet the parameter requirements set in the fourth working state.

[0151] See Figure 20 and Figure 21 As shown, in the fifth state, i.e., the negative pressure oscillating inhalation state, a negative pressure air flow oscillation can be formed, and the user can receive a negative pressure oscillating air flow. The valve plate 130 reciprocally rotates relative to the first valve seat 110 between the positions of Figure 20 and Figure 21 . The air flow path in the fifth working state is the same as that in the second working state. The difference between the fifth working state and the second working state is that the intersecting area between the first ventilation hole 131 of the valve plate 130 and the first air duct port 115 of the first valve seat 110 and the second air branch port 1412 of the first disk 141 continuously changes, and the intersecting area between the second ventilation hole 132 of the valve plate 130 and the fourth air duct port 118 of the first valve seat 110 and the fourth air branch port 1414 of the first disk 141 continuously changes, so that the gas flow area continuously changes, causing the output gas pressure to continuously change, thereby generating an inhalation oscillation. Then, during the user's exhalation process, a negative pressure air flow oscillation is formed in the respiratory tract, which is beneficial to loosening the secretions in the respiratory tract and improving the comfort of the user during exhalation.

[0152] It should be noted that in the fifth working state, the angle range of reciprocating rotation of the valve plate 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 according to the pressure value fed back by the pressure detector 220, so as to meet the parameter requirements set in the fifth working state.

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

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

[0155] It should be noted that, see Figure 25As shown, in the sixth working state, the angle range of reciprocating rotation of the valve plate 130 relative to the first valve seat 110 is greater than or equal to 5° and less than or equal to 25°. The controller 210 of the expectoration system controls the operating angle and frequency of the motor 161 according to the pressure value fed back by the pressure detector 220, so as to meet the parameter requirements set in the sixth working state.

[0156] It should be noted that the six working states described in the embodiments of the present invention can be mutually converted between different working states through the control of the driving assembly. In this way, the replacement and debugging time between different devices is reduced, so as to improve the expectoration efficiency.

[0157] See Figure 26 As shown, an expectoration system 200 provided by an embodiment of the present invention includes 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 communication air port 126 corresponding to the third communication airway 123.

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

[0160] Among them, the pressure detector 220 can feed back the pressure value detected by the third communication air port 126 corresponding to the third communication airway 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, rotation speed, start and stop position, rotation speed and rotation direction of the motor 161 of the fan assembly in the multi-way valve group structure 100. In this way, the multi-way valve group structure 100 is switched between different working states, thereby reducing the debugging time and improving the expectoration efficiency.

[0162] Embodiment 2

[0163] The difference between the multi-way valve group structure in Embodiment 2 and the multi-way valve group structure in Embodiment 1 lies in: the structure of the first valve seat is different. See Figure 27 As shown, in the first valve seat of this embodiment, the first airway corresponds to one airway port, that is, the airway port corresponding to the first airway is the fifth airway port 1107, the second airway corresponds to one airway port, that is, the airway port corresponding to the second airway is the sixth airway port 1108. The fifth airway port 1107 is communicated with the first communication hole 1421 and the second communication hole 1422 of the second disk 142, and the sixth airway port 1108 is communicated with the third communication hole 1423 and the fourth communication hole 1424 of the second disk 142.

[0164] The shapes of the fifth airway port 1107 and the sixth airway port 1108 are strip-shaped.

[0165] A sealing ring is respectively arranged at the fifth air duct opening 1107 and the sixth air duct opening 1108 to achieve the sealing between the fifth air duct opening 1107 and the sixth air duct opening 1108.

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

[0167] Embodiment Three

[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 lies in that: the structure of the first valve seat is different. See Figure 28 As shown, in the first valve seat of this embodiment, the first air duct 111 corresponds to two air duct openings, that is, the two air duct openings corresponding to the first air duct 111 are the first air duct opening 115 and the second air duct opening 116 respectively, 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 communicates with the first communication hole 1421 of the second disc 142, the second air duct opening 116 communicates with the second communication hole 1422 of the second disc 142, and the sixth air duct opening 1108 communicates with the third communication hole 1423 and the fourth communication hole 1424 of the second disc 142.

[0169] The shape of the sixth air duct opening 1108 is elongated.

[0170] A sealing ring (the first ring 1104) is arranged at the first air duct opening 115 and the second air duct opening 116, and a sealing ring is arranged at the sixth air duct opening 1108 to achieve the sealing between the sixth air duct opening 1108 and the first air duct opening 115 and the second air duct opening 116.

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

[0172] Embodiment Four

[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 lies in that: the multi-way valve group structure in the fourth embodiment may not have the first disc. See Figure 29As shown, the first communication air passage 121 of the second valve seat in the fourth embodiment corresponds to one communication port, and the communication port corresponding to the first communication air passage 121 is the first communication port 127. The second communication air passage 122 corresponds to one communication port, that is, the communication port corresponding to the second communication air passage 122 is the second communication port 128. The third communication air passage 123 corresponds to two communication ports, that is, the two communication ports corresponding to the third communication air passage 123 are the fourth communication port 1208 and the fifth communication port 1209 respectively. The first communication port 127 is communicated with the first air branch port 1411 of the first disc 141, the second communication port 128 is communicated with the second air branch port 1412 of the first disc 141, the fourth communication port 1208 is communicated with the third air branch port 1413 of the first disc 141, and the fifth communication port 1209 is communicated with the fourth air branch port 1414 of the first disc 141.

[0174] The shapes of the fourth communication port 1208 and the fifth communication port 1209 are circular.

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

[0176] The structures 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and 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 one air channel port; 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 plate, rotatably disposed between the first valve seat and the second valve seat, the valve plate having a plurality of vent holes; 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 plate, and the drive assembly is configured to drive the valve plate 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 plate is disposed between the valve plate and the second valve seat, the first plate is provided with four air branches, each of the air branches is communicated with one of the communication ports; and / or, A second disk is arranged between the valve plate and the first valve seat, and the second disk is provided with four communicating holes, each of which 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 arranged between the first disk 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 arranged 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 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 sheet is arranged in the cavity.

7. The multi-way valve group structure according to any one of claims 1 to 6, characterized in that: The valve plate comprises a first vent hole, a second vent hole, a third vent hole and a fourth vent hole, and in the circumferential direction of the valve plate, the third vent hole and the fourth vent hole are arranged between the first vent hole and the second vent hole; 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.

8. The multi-way valve group structure according to claim 7, characterized in that: 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.

9. The multi-way valve group structure according to claim 7, 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.

10. A sputum expectoration system, characterized in that: It comprises a controller, a pressure detector and a multi-way valve group structure according to any one of claims 1 to 9; 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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