Exhalation valve and ventilator

Abstract

The present invention provides an exhalation valve and a ventilator, the exhalation valve comprising a housing, a valve body, a diaphragm and an adjusting assembly; the valve body is installed in the housing, and there is an installation gap between the air outlet end of the valve body and the first end of the housing; the diaphragm and the adjusting assembly are sequentially arranged in the installation gap, the first side of the diaphragm is connected to the air outlet end of the valve body, and the second side of the diaphragm is in contact with the adjusting assembly; the adjusting assembly is used to adjust the diaphragm so that the first side of the diaphragm remains parallel to the end face of the air outlet end of the valve body. In the present invention, the posture of the diaphragm can be adjusted by the adjusting assembly, and the first side of the diaphragm remains parallel to the end face of the air outlet end of the valve body when a force is applied in any direction, which is conducive to stabilizing the airflow, preventing the airflow from affecting the diaphragm, avoiding diaphragm vibration and resonance, generating whistling sounds, and cooperating to cause flow vibration of the ventilator, causing patient discomfort.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilators, and in particular to an exhalation valve and a ventilator. Background Art

[0002] The exhalation valve is an essential component of a ventilator. Its primary function is to help patients regulate and control the flow and speed of exhaled gas, thereby maintaining smooth and comfortable breathing. The exhalation valve opens during exhalation, allowing waste gas to escape from the patient's airway. During inhalation, the valve closes, preventing the outflow of fresh gas. The design of the exhalation valve helps prevent the inhalation of excessive carbon dioxide and maintains normal respiratory system function.

[0003] At present, the exhalation valve mainly includes a shell, a valve body, a diaphragm and a driver. The valve body and the diaphragm are both installed in the shell. The diaphragm is connected to the driver, and the driver is used to tightly install the diaphragm on the air outlet of the valve body. The exhalation valve is used on a ventilator. When the ventilator provides a base flow during the exhalation phase, this means that even during the exhalation phase, additional gas will be discharged through the exhalation valve; this base flow may cause the diaphragm to not be completely closed, especially under conditions of low flow and high pressure. Under conditions of low flow and high pressure, when the diaphragm and the air outlet of the valve body are not completely sealed, the driver may tilt the diaphragm, tightening it on one side and loosening it on the other. Because the airflow itself is unstable, the diaphragm is prone to vibration and resonance, generating a whistling sound and co-inducing the flow vibration of the ventilator, causing the patient to be uncomfortable. Summary of the Invention

[0004] The present invention provides an exhalation valve and a ventilator, so as to solve the problem that the existing exhalation valve is prone to diaphragm vibration and resonance, which generates whistling sound and causes the flow vibration of the ventilator.

[0005] An exhalation valve comprises a housing, a valve body, a diaphragm and an adjusting assembly;

[0006] The valve body is installed in the shell, and there is an installation gap between the air outlet end of the valve body and the first end of the shell;

[0007] The diaphragm and the regulating assembly are sequentially arranged in the installation gap, the first side surface of the diaphragm is in contact with the air outlet end of the valve body, and the second side surface of the diaphragm is in contact with the regulating assembly;

[0008] The adjusting assembly is used to adjust the diaphragm so that the first side surface of the diaphragm remains parallel to the end surface of the air outlet end of the valve body.

[0009] Preferably, the adjustment assembly includes a driving member, a universal head and a universal push rod;

[0010] The driving member is mounted on the first end of the housing and connected to the first end of the universal head;

[0011] The first end of the universal push rod is provided with a clamping groove, and the second end of the universal head is movably mounted in the clamping groove;

[0012] The driving member drives the universal push rod to move through the universal head, so that the second end of the universal push rod is vertically fitted with the second side surface of the diaphragm.

[0013] Preferably, the second end of the universal head is configured as a spherical joint, and the engaging groove is configured as an arc-shaped groove.

[0014] Preferably, the universal push rod includes a main body disc and a connecting column extending axially from the center of one end surface of the main body disc close to the universal head along the main body disc;

[0015] The clamping groove is provided on one end of the connecting column facing the universal head.

[0016] Preferably, the diaphragm is configured as a PEEP diaphragm.

[0017] Preferably, the diaphragm includes a main body ring, a deformation portion radially extending from an inner wall of one end of the main body ring, and a receiving disc radially extending from a side of the deformation portion away from the main body ring;

[0018] The main body ring is sleeved on the air outlet end of the valve body, and the receiving plate is in contact with the regulating component.

[0019] Preferably, a snap-fit ​​groove is provided at the other end of the main body ring, and a snap-fit ​​protrusion is provided on the air outlet end of the valve body, and the snap-fit ​​groove matches the snap-fit ​​protrusion.

[0020] Preferably, the housing includes a main body shell, a mounting shell provided on a first side surface of the main body shell, a flow guide tube provided on a second side surface of the main body shell, and a limiting shell provided at a first end of the main body shell;

[0021] The valve body is placed in the main body shell and fixed in the mounting shell, and the air outlet end of the valve body contacts the first end of the main body shell;

[0022] The portion of the valve body close to the gas outlet end is communicated with the flow guide pipe;

[0023] The diaphragm and the regulating assembly are sequentially arranged in the limiting shell.

[0024] Preferably, the valve body comprises a rear body and a front body;

[0025] The rear body and the front body are sequentially installed in the main body shell, the end surface of the air outlet end of the rear body contacts the first end of the main body shell, and the air outlet end of the front body is installed at the air inlet end of the rear body;

[0026] An air guide pipe is provided on the portion of the rear body close to the air outlet end, and the air guide pipe is connected to the flow guide pipe;

[0027] A mounting structure is provided at the junction of the second end of the rear body and the first end of the front body, and the mounting structure is fixed in the mounting shell.

[0028] Preferably, the mounting structure includes a connecting plate and a mounting post;

[0029] The second end of the rear body and the first end of the front body are both provided with the connecting plate;

[0030] The first end of the mounting post is mounted in the mounting shell, and the connecting plate is mounted on the second end of the mounting post.

[0031] Preferably, the exhalation valve further comprises a flow sensor air resistor, and the flow sensor air resistor is arranged between the front body and the rear body.

[0032] Preferably, the exhalation valve further comprises a rotating twist cover, which is sleeved on the air inlet end of the valve body and connected to the shell.

[0033] Preferably, the driving component is a voice coil motor.

[0034] A ventilator comprises the exhalation valve.

[0035] The exhalation valve provided in an embodiment of the present invention is a structure arranged at the exhalation port of a ventilator for controlling and regulating the exhalation of gas; it specifically comprises a housing, a valve body, a diaphragm and an adjustment assembly. During installation, the housing serves as a support base for installing other parts of the exhalation valve; the valve body is installed in the housing so that there is an installation gap between the outlet end of the valve body and the first end of the housing; the diaphragm and the adjustment assembly are arranged in the installation gap in sequence, with the first side of the diaphragm in contact with the outlet end of the valve body and the second side of the diaphragm in contact with the adjustment assembly. In this way, the posture of the diaphragm can be adjusted by the adjustment assembly, and the first side of the diaphragm is kept parallel to the end face of the outlet end of the valve body when a force is applied in any direction, which is conducive to stabilizing the airflow, preventing the airflow from affecting the diaphragm, avoiding diaphragm vibration and resonance, generating whistling sounds and co-inducing flow vibration of the ventilator, causing patient discomfort, improving the user experience, and at the same time, eliminating the need to spend a lot of manpower and time on preliminary testing and selecting good products for use, thereby achieving the purpose of cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only 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.

[0037] Figure 1 is an isometric view of an exhalation valve according to one embodiment of the present invention;

[0038] Figure 2 is a cross-sectional view of an exhalation valve according to one embodiment of the present invention;

[0039] Figure 3 1 is an exploded view of an exhalation valve according to an embodiment of the present invention.

[0040] Among them, 1. outer shell; 11. main body shell; 12. mounting shell; 13. flow guide tube; 14. limit shell; 15. fixed disk; 2. valve body; 21. rear body; 22. front body; 23. air guide tube; 3. diaphragm; 31. main body ring; 32. deformation part; 33. receiving disk; 4. adjustment component; 41. driving part; 42. universal head; 43. universal push rod; 431. main body disk; 432. connecting column; 5. snap-in groove; 6. snap-in protrusion; 7. flow sensor air resistance; 8. rotating twist cover; 9. mounting structure; 91. connecting plate; 92. mounting column. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] The embodiment of the present invention provides an exhalation valve, referring to Figure 1 、 Figure 2 and Figure 3 The exhalation valve includes a shell 1, a valve body 2, a diaphragm 3 and an adjusting assembly 4; the valve body 2 is installed in the shell 1, and there is an installation gap between the air outlet end of the valve body 2 and the first end of the shell 1; the diaphragm 3 and the adjusting assembly 4 are sequentially arranged in the installation gap, the first side surface of the diaphragm 3 is connected to the air outlet end of the valve body 2, and the second side surface of the diaphragm 3 is in contact with the adjusting assembly 4; the adjusting assembly 4 is used to adjust the diaphragm 3 so that the first side surface of the diaphragm 3 remains parallel to the end face of the air outlet end of the valve body 2.

[0045] As an example, an exhalation valve is a structure installed at the exhalation port of a ventilator to control and regulate exhaled gas. It specifically comprises a housing 1, a valve body 2, a diaphragm 3, and an adjustment assembly 4. During installation, the housing 1 serves as a support base for mounting the other components of the exhalation valve. The valve body 2 is installed within the housing 1, leaving a mounting gap between the outlet end of the valve body 2 and the first end of the housing 1. The diaphragm 3 and the adjustment assembly 4 are sequentially positioned within the mounting gap, with the first side of the diaphragm 3 contacting the outlet end of the valve body 2 and the second side of the diaphragm 3 contacting the adjustment assembly 4. This arrangement allows the adjustment assembly 4 to adjust the position of the diaphragm 3. Force applied in any direction maintains the first side of the diaphragm 3 parallel to the end face of the outlet end of the valve body 2. This helps stabilize airflow, prevents airflow from affecting the diaphragm 3, and avoids diaphragm 3 vibration and resonance, which could generate whistling sounds and cause ventilator flow fluctuations that could cause patient discomfort. This improves the user experience and eliminates the need for extensive labor and time spent on preliminary testing and selecting qualified products, thus achieving cost savings. The housing 1 comprises: The main body of the exhalation valve is made of PPSU and SUS304, so it can be removed for high-temperature disinfection.

[0046] In one embodiment, referring to Figure 2 and Figure 3The adjustment assembly 4 includes a driving member 41, a universal head 42 and a universal push rod 43; the driving member 41 is installed on the first end of the housing 1 and is connected to the first end of the universal head 42; the first end of the universal push rod 43 is provided with a clamping groove 5, and the second end of the universal head 42 is movably installed in the clamping groove 5; the driving member 41 drives the universal push rod 43 to move through the universal head 42 so that the second end of the universal push rod 43 is vertically fitted with the second side surface of the diaphragm 3.

[0047] As an example, the adjustment assembly 4 includes a driving member 41, a universal head 42 and a universal push rod 43; during installation, the driving member 41 is installed on the first end of the housing 1 and connected to the first end of the universal head 42; a clamping groove 5 is provided at the first end of the universal push rod 43, and the second end of the universal head 42 is movably installed in the clamping groove 5, so that the universal push rod 43 can be rotated arbitrarily on the universal head 42, and the auxiliary diaphragm 3 and the air outlet end of the valve body 2 are always in a parallel state, without causing a situation where one side is tight and the other side is loose, so that the airflow does not affect the diaphragm 3; the driving member 41 drives the universal push rod 43 to move through the universal head 42, so that the second end of the universal push rod 43 is vertically fitted with the second side of the diaphragm 3, ensuring that the diaphragm 3 remains parallel to the air outlet end of the valve body 2 when subjected to force in any direction, which is conducive to stabilizing the airflow and can solve the howling and flow jitter caused by resonance.

[0048] In one embodiment, referring to Figure 2 and Figure 3 The second end of the universal head 42 is set as a spherical joint, and the clamping groove 5 is set as an arc-shaped groove.

[0049] As an example, the second end of the universal head 42 is set to a spherical joint, and the snap-in groove 5 is set to a circular arc groove. The spherical joint matches the circular arc groove, which facilitates the installation of the universal push rod 43 on the second end of the universal head 42, so that the universal push rod 43 can be rotated arbitrarily on the universal head 42, and the auxiliary diaphragm 3 and the air outlet end of the valve body 2 are always in a parallel state, without causing a situation where one side is tight and the other side is loose, so that the airflow does not affect the diaphragm 3.

[0050] In one embodiment, referring to Figure 2 and Figure 3 The universal push rod 43 includes a main body plate 431 and a connecting column 432 extending axially from the center of one end surface of the main body plate 431 close to the universal head 42 along the main body plate 431;

[0051] A snap-fitting slot 5 is formed on one end of the connecting post 432 facing the universal head 42 .

[0052] As an example, the universal push rod 43 includes a main disk 431 and a connecting column 432; the connecting column 432 extends axially along the main disk 431 from the center of one end face of the main disk 431 close to the universal head 42; the main disk 431 is used to contact the second side face of the diaphragm 3, and a snap-fit ​​groove 5 is provided at the end of the connecting column 432 facing the universal head 42, and the snap-fit ​​groove 5 matches the second end of the universal head 42 to facilitate the installation of the universal push rod 43 on the universal head 42.

[0053] In one embodiment, referring to Figure 2 and Figure 3 , diaphragm 3 is set as PEEP diaphragm.

[0054] As an example, diaphragm 3 is set as a PEEP diaphragm. The PEEP diaphragm is a key component in the exhalation valve for achieving positive end-expiratory pressure (PEEP). It produces a PEEP effect through its physical resistance to expiratory flow, thereby helping patients improve their respiratory function. The state of the PEEP diaphragm in different working stages: Inspiratory phase: At this time, the state of the PEEP diaphragm depends on the settings of the ventilator and the patient's breathing conditions, but usually the impact of the PEEP value on the diaphragm at this stage is not major. Expiratory phase, PEEP value is greater than 0: During the exhalation phase, if the PEEP value is greater than 0, it means that a certain positive pressure is maintained in the respiratory tract, which will affect the opening and closing state of the PEEP diaphragm. When the PEEP value is high, the diaphragm may be in an incompletely closed state to maintain the positive pressure in the respiratory tract. Expiratory phase, PEEP value is equal to 0: During the exhalation phase with a PEEP value of 0, the diaphragm should theoretically be completely closed, but the actual situation may vary depending on the design of the ventilator and the patient's breathing conditions. Depending on the specific situation of different ventilators, some will add a base flow (the so-called base flow means that during the expiratory phase of the ventilator, the ventilator provides an additional 3 to 5L of flow to be discharged through the expiratory valve. The base flow can be simply understood as the diaphragm 3 and the outlet end of the valve body 2 are not completely sealed under any circumstances). The problems that may occur with the PEEP diaphragm in the expiratory valve at different working stages are related to factors such as the settings of the ventilator, the patient's breathing conditions, and the base flow. In order to avoid problems such as diaphragm jitter and resonance, these factors need to be considered comprehensively, and corresponding measures need to be taken for adjustment and maintenance.

[0055] In one embodiment, referring to Figure 2 and Figure 3 The diaphragm 3 includes a main ring 31, a deformation portion 32 extending radially from the inner wall of one end of the main ring 31, and a receiving plate 33 extending radially from the side of the deformation portion 32 away from the main ring 31; the main ring 31 is mounted on the air outlet end of the valve body 2, and the receiving plate 33 is in contact with the adjusting component 4.

[0056] As an example, the diaphragm 3 includes a main ring 31, a deformation portion 32 and a receiving plate 33; when installed, the main ring 31 is used to be mounted on the air outlet end of the valve body 2, and the air flow flows out between the main ring 31 and the air outlet end of the valve body 2; the deformation portion 32 is radially extended from the inner wall of one end of the main ring 31, and will deform when subjected to force, which can change the inner diameter of the main ring 31, thereby facilitating the main ring 31 to be mounted on the air outlet end of the valve body 2; the receiving plate 33 is radially extended from the side of the deformation portion 32 away from the main ring 31, and the receiving plate 33 is in contact with the adjustment component 4 By adjusting the universal push rod 43 of the assembly 4, it can be rotated arbitrarily on the universal head 42, and the auxiliary receiving plate 33 is always in a parallel state with the air outlet end of the valve body 2, so that there is no situation where one side is tight and the other side is loose, so that the airflow does not affect the diaphragm 3; the driving member 41 drives the universal push rod 43 to move through the universal head 42, so that the second end of the universal push rod 43 is kept in vertical contact with the second side surface of the diaphragm 3, ensuring that the diaphragm 3 and the air outlet end of the valve body 2 remain parallel when the diaphragm 3 is subjected to force in any direction, which is conducive to stabilizing the airflow and can solve the problem of howling and flow jitter caused by resonance.

[0057] In one embodiment, referring to Figure 2 and Figure 3 The other end of the main body ring 31 is provided with a snap-fit ​​groove 5, and the air outlet end of the valve body 2 is provided with a snap-fit ​​protrusion 6, and the snap-fit ​​groove 5 matches the snap-fit ​​protrusion 6.

[0058] As an example, a snap-fit ​​groove 5 is provided at the other end of the main body ring 31, and a snap-fit ​​protrusion 6 is provided on the air outlet end of the valve body 2. The snap-fit ​​groove 5 matches the snap-fit ​​protrusion 6, which makes it easy to fit the main body ring 31 on the air outlet end of the valve body 2, thereby facilitating the installation and disassembly between the diaphragm 3 and the valve body 2.

[0059] In one embodiment, referring to Figure 3 The outer shell 1 includes a main shell 11, a mounting shell 12 arranged on the first side surface of the main shell 11, a guide tube 13 arranged on the second side surface of the main shell 11, and a limit shell 14 arranged at the first end of the main shell 11; the valve body 2 is placed in the main shell 11 and fixed in the mounting shell 12, and the air outlet end of the valve body 2 is in contact with the first end of the main shell 11; the part of the valve body 2 close to the air outlet end is connected to the guide tube 13; the diaphragm 3 and the adjustment component 4 are arranged in the limit shell 14 in sequence.

[0060] As an example, the outer shell 1 includes a main shell 11, an installation shell 12, a flow guide tube 13 and a limit shell 14; the main shell 11 serves as a main component and is used to place the valve body 2, and the air outlet end of the valve body 2 is in contact with the first end of the main shell 11, which has a limiting effect on the valve body 2 to prevent the valve body 2 from slipping out from the first end of the main shell 11; the installation shell 12 is arranged on the first side surface of the main shell 11 and is used to fix the valve body 2 through other structures; the flow guide tube 13 is arranged on the second side surface of the main shell 11 and is used to communicate with the part of the valve body 2 close to the air outlet end for ventilation; the limit shell 14 is arranged at the first end of the main shell 11 and is used to install the diaphragm 3 and the adjustment assembly 4.

[0061] In one embodiment, referring to Figure 2 and Figure 3 The valve body 2 includes a rear body 21 and a front body 22; the rear body 21 and the front body 22 are installed in the main body shell 11 in sequence, the end face of the air outlet end of the rear body 21 contacts the first end of the main body shell 11, and the air outlet end of the front body 22 is installed at the air inlet end of the rear body 21; an air guide pipe 23 is provided on the part of the rear body 21 close to the air outlet end, and the air guide pipe 23 is connected to the flow guide pipe 13; a mounting structure 9 is provided at the junction of the second end of the rear body 21 and the first end of the front body 22, and the mounting structure 9 is fixed in the mounting shell 12.

[0062] As an example, the valve body 2 includes a rear body 21 and a front body 22; during installation, the rear body 21 and the front body 22 are installed in the main shell 11 in sequence, the end face of the air outlet end of the rear body 21 contacts the first end of the main shell 11, and there is an installation gap between the rear body 21 and the limit shell 14, the diaphragm 3 and the adjustment component 4 are arranged in the installation gap in sequence, the first side surface of the diaphragm 3 is connected to the air outlet end of the rear body 21, and the second side surface of the diaphragm 3 contacts the adjustment component 4, the air outlet end of the front body 22 is installed at the air inlet end of the rear body 21, and the front body 22 and the rear body 21 cooperate to discharge the waste gas blown out by the patient; an air guide tube 23 is provided on the part of the rear body 21 close to the air outlet end, and the air guide tube 23 is connected to the flow guide tube 13 for ventilation; a mounting structure 9 is provided at the junction of the second end of the rear body 21 and the first end of the front body 22, and the mounting structure 9 is fixed in the mounting shell 12, so as to facilitate fixing the front body 21 and the rear body 22 in the outer shell 1. This arrangement allows the diaphragm 3 to be adjusted in position by adjusting the assembly 4. Regardless of the direction of force applied, the first side surface of the diaphragm 3 remains parallel to the end surface of the air outlet of the rear body 21. This helps stabilize the airflow, preventing it from affecting the diaphragm 3 and preventing vibration and resonance of the diaphragm 3, which could produce whistling sounds and synergistically cause ventilator flow fluctuations that could cause patient discomfort. This improves the user experience and eliminates the need for extensive labor and time spent on preliminary testing and selecting qualified products, thus achieving cost savings. An O-ring is provided between the front body 22 and the rear body 21 to ensure a tight seal between them.

[0063] In one embodiment, referring to Figure 3The mounting structure 9 includes a connecting plate 91 and a mounting column 92; the second end of the rear body 22 and the first end of the front body 21 are both provided with a connecting plate 91; the first end of the mounting column 92 is installed in the mounting shell 12, and the connecting plate 91 is installed at the second end of the mounting column 92.

[0064] As an example, the mounting structure 9 includes a connecting plate 91 and mounting posts 92. During installation, a connecting plate 91 is provided at the second end of the rear body 22 and the first end of the front body 21. The first end of the mounting post 92 is installed in the mounting housing 12, and then both connecting plates 91 are installed on the second ends of the mounting posts 92. This secures the rear body 22 and the front body 21 within the mounting housing 12, thereby stably mounting the valve body 2 within the outer housing 1. There can be one or two mounting posts 92. When there is one mounting post 92, the two connecting plates 91 are sequentially mounted on the mounting post 92. When there are two mounting posts 92, the two mounting posts 92 are arranged parallel and spaced apart, and the two connecting plates 91 are respectively mounted on the two mounting posts 92. Furthermore, a retaining groove is provided in the mounting housing 12, and an elastic ring is mounted on the first end of the mounting post 92. The elasticity of the elastic ring allows the elastic ring to deform, facilitating its engagement with the retaining groove. This arrangement facilitates installation and removal of the mounting post 92.

[0065] In one embodiment, referring to Figure 2 and Figure 3 The exhalation valve further includes a flow sensor air resistor 7 , which is disposed between the front body 22 and the rear body 21 .

[0066] As an example, the exhalation valve further includes a flow sensor air resistor 7, which is disposed between the front body 22 and the rear body 21. The flow sensor air resistor 7 can monitor and adjust the exhaled gas flow rate to ensure a smooth and safe breathing process. The flow sensor air resistor 7 is a differential pressure flow sensor air resistor.

[0067] In one embodiment, referring to Figure 1 and Figure 3 The exhalation valve further includes a rotating twist cover 8, which is sleeved on the air inlet end of the valve body 2 and connected to the shell 1.

[0068] As an example, the exhalation valve also includes a rotating twist cover 8. During installation, the rotating twist cover 8 is mounted on the air inlet end of the valve body 2 and connected to the outer shell 1. Specifically, a fixed disk 15 is provided at the second end of the main shell 11, and the rotating twist cover 8 is installed on the fixed disk 15. The rotating twist cover 8 is arranged in this way to play a sealing role, ensuring the isolation of the interior of the exhalation valve from the external environment, and preventing leakage of gas, liquid or other media. The size or shape of the internal channel of the exhalation valve can also be changed by rotating the twist cover 8, thereby affecting the flow rate or pressure of the gas, allowing the user to manually adjust it as needed to meet specific breathing or gas exchange requirements. The design of the rotating twist cover 8 makes the maintenance and cleaning of the exhalation valve more convenient. The user can easily open or close the twist cover to check the internal state of the exhalation valve, clean internal impurities or replace damaged parts.

[0069] In one embodiment, referring to Figure 2 and Figure 3 , the driving component 41 is a voice coil motor.

[0070] As an example, the driving member 41 is a voice coil motor, which is installed on the first end of the housing 1 and connected to the first end of the universal head 42; a clamping groove 5 is provided at the first end of the universal push rod 43, and the second end of the universal head 42 is movably installed in the clamping groove 5, so that the universal push rod 43 can be rotated arbitrarily on the universal head 42, and the auxiliary diaphragm 3 and the air outlet end of the valve body 2 are always in a parallel state, without causing a situation where one side is tight and the other side is loose, so that the airflow does not affect the diaphragm 3; the linear motion of the voice coil motor can drive the universal push rod 43 to move through the universal head 42, closing or releasing the diaphragm 3, so that the second end of the universal push rod 43 is vertically fitted with the second side of the diaphragm 3, ensuring that the diaphragm 3 remains parallel to the air outlet end of the valve body 2 when subjected to force in any direction, which is conducive to stabilizing the airflow and can solve the howling and flow jitter caused by resonance.

[0071] An embodiment of the present invention provides a ventilator including an exhalation valve.

[0072] As an example, a ventilator includes an exhalation valve. This is an essential component of a ventilator, primarily helping the patient regulate and control the flow and rate of exhaled gas, thereby maintaining smooth and comfortable breathing. The exhalation valve opens during exhalation, allowing waste gas to escape from the patient's airway. During inhalation, the valve closes, preventing fresh gas from escaping during inhalation. The design of the exhalation valve helps prevent the inhalation of excessive carbon dioxide and maintains normal respiratory system function. Depending on the specific ventilator, some ventilators may incorporate a basal flow (basal flow refers to an additional 3-5L of flow through the ventilator during the exhalation phase. This basal flow can be simply understood as the incomplete sealing of the diaphragm 3 and the outlet end of the valve body 2, regardless of the circumstances). Providing a basal flow during exhalation means that additional gas will be discharged through the ventilator even during exhalation. This basal flow can cause the diaphragm 3 to not fully close, especially under low-flow, high-pressure conditions. In the case of low flow and high pressure, when the diaphragm 3 and the outlet end of the valve body 2 are not completely sealed, the drive member 41 may tilt the diaphragm 3, tightening it on one side and loosening it on the other. Because the airflow itself is unstable, the diaphragm 3 is prone to vibrating and resonating, generating a whistling sound and co-inducing the flow of the ventilator, causing the patient to feel uncomfortable. The exhalation valve is an indispensable and important component of the ventilator. When the ventilator is working, the patient discharges the waste gas through the exhalation valve. The quality of the exhalation valve will directly affect the performance of the ventilator and the patient's experience. The exhalation valve in this example includes a housing 1, a valve body 2, a diaphragm 3 and an adjustment component 4. During installation, the shell 1 is used as a supporting reference for installing other parts of the exhalation valve; the valve body 2 is installed in the shell 1 so that there is an installation gap between the air outlet end of the valve body 2 and the first end of the shell 1, and the diaphragm 3 and the adjustment component 4 are arranged in the installation gap in sequence, with the first side of the diaphragm 3 connected to the air outlet end of the valve body 2, and the second side of the diaphragm 3 in contact with the adjustment component 4. In this way, the posture of the diaphragm 3 can be adjusted by the adjustment component 4, and the first side of the diaphragm 3 is kept parallel to the end face of the air outlet end of the valve body 2 when subjected to force in any direction, which is conducive to stabilizing the airflow and preventing the airflow from affecting the diaphragm 3, avoiding the diaphragm 3 from shaking and resonating, generating whistling sounds and co-inducing flow jitter of the ventilator, causing patient discomfort, improving the user experience, and at the same time, eliminating the need to spend a lot of manpower and time on preliminary testing and selecting good products for use, thereby achieving the purpose of cost saving. The main difference between this exhalation valve and the commonly used exhalation valves on the market is that this exhalation valve can mainly adjust the diaphragm 3 by cooperating with the universal push rod 43 and the universal head 42 of the adjustment component 4, so that it is always parallel to the air outlet end of the valve body 2, avoiding the situation where the diaphragm 3 and the air outlet end of the valve body 2 are pressed and loosened at the same time. In this case, the passage of air will cause the diaphragm 3 to vibrate, generating a whistling sound and the flow rate to vibrate due to the vibration of the diaphragm 3.

[0073] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. An exhalation valve, characterized in that: Including housing, valve body, diaphragm and regulating assembly; The valve body is installed in the shell, and there is an installation gap between the air outlet end of the valve body and the first end of the shell; The diaphragm and the regulating assembly are sequentially arranged in the installation gap, the first side surface of the diaphragm is in contact with the air outlet end of the valve body, and the second side surface of the diaphragm is in contact with the regulating assembly; The adjusting assembly is used to adjust the diaphragm so that the first side surface of the diaphragm remains parallel to the end surface of the gas outlet end of the valve body; The adjustment assembly includes a driving member, a universal head and a universal push rod; The driving member is mounted on the first end of the housing and connected to the first end of the universal head; The first end of the universal push rod is provided with a clamping groove, and the second end of the universal head is movably mounted in the clamping groove; The driving member drives the universal push rod to move through the universal head, so that the second end of the universal push rod is vertically fitted with the second side surface of the diaphragm.

2. The exhalation valve according to claim 1, characterized in that The second end of the universal head is configured as a spherical joint, and the clamping groove is configured as an arc-shaped groove.

3. The exhalation valve according to claim 1, characterized in that The universal push rod includes a main body plate and a connecting column extending axially from the center of one end surface of the main body plate close to the universal head along the main body plate; The clamping groove is provided on one end of the connecting column facing the universal head.

4. The exhalation valve according to claim 1, characterized in that The diaphragm is configured as a PEEP diaphragm.

5. The exhalation valve according to claim 1, characterized in that The diaphragm includes a main body ring, a deformation portion extending radially from an inner wall of one end of the main body ring, and a receiving disc extending radially from a side of the deformation portion away from the main body ring; The main body ring is sleeved on the air outlet end of the valve body, and the receiving plate is in contact with the regulating component.

6. The exhalation valve according to claim 5, characterized in that The other end of the main body ring is provided with a clamping groove, and the air outlet end of the valve body is provided with a clamping protrusion, and the clamping groove matches the clamping protrusion.

7. The exhalation valve according to claim 1, characterized in that The housing includes a main body shell, a mounting shell arranged on a first side surface of the main body shell, a flow guide pipe arranged on a second side surface of the main body shell, and a limiting shell arranged at a first end of the main body shell; The valve body is placed in the main body shell and fixed in the mounting shell, and the air outlet end of the valve body contacts the first end of the main body shell; The portion of the valve body close to the gas outlet end is communicated with the flow guide pipe; The diaphragm and the regulating assembly are sequentially arranged in the limiting shell.

8. The exhalation valve according to claim 7, characterized in that The valve body includes a rear body and a front body; The rear body and the front body are sequentially installed in the main body shell, the end surface of the air outlet end of the rear body contacts the first end of the main body shell, and the air outlet end of the front body is installed at the air inlet end of the rear body; An air guide pipe is provided on the portion of the rear body close to the air outlet end, and the air guide pipe is connected to the flow guide pipe; A mounting structure is provided at the junction of the second end of the rear body and the first end of the front body, and the mounting structure is fixed in the mounting shell.

9. The exhalation valve according to claim 8, characterized in that The mounting structure includes a connecting plate and a mounting column; The second end of the rear body and the first end of the front body are both provided with the connecting plate; The first end of the mounting post is mounted in the mounting shell, and the connecting plate is mounted on the second end of the mounting post.

10. The exhalation valve according to claim 8, characterized in that The exhalation valve further includes a flow sensor air resistor, which is arranged between the front body and the rear body.

11. The exhalation valve according to claim 1, characterized in that The exhalation valve further comprises a rotating twist cover, which is sleeved on the air inlet end of the valve body and connected to the shell.

12. The exhalation valve according to claim 1, characterized in that The driving component is a voice coil motor.

13. A ventilator, characterized in that: The invention comprises the exhalation valve according to any one of claims 1 to 12.

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