Voice coil motor diaphragm proportional valve and breathing equipment

Abstract

The utility model relates to the technical field of valves, in particular to a voice coil motor diaphragm proportional valve and breathing equipment, the voice coil motor diaphragm proportional valve comprises a valve body, a valve nozzle, a sealing assembly, a driving assembly and a transmission assembly, the valve body is provided with a valve cavity, an air inlet and an air outlet, and the air inlet and the air outlet are communicated with the valve cavity; the valve nozzle is assembled at the air inlet or the air outlet, and a channel and a sealing groove communicated with the channel are formed in the valve nozzle; the sealing assembly is arranged in the sealing groove, can slide in the axial direction of the sealing groove and is used for controlling opening and closing of the channel. The driving assembly is arranged on the valve body, and the power output end of the driving assembly extends into the valve cavity; the transmission assembly is arranged in the valve cavity, one end of the transmission assembly is connected with the power output end of the driving assembly, the other end of the transmission assembly is connected with the sealing assembly, according to the voice coil motor diaphragm proportional valve, a user does not need to actively overcome resistance, the gas flow can be continuously and accurately adjusted, and the comfort and safety of hyperbaric oxygen chamber treatment are improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a voice coil motor diaphragm proportional valve and a breathing device. Background Technology

[0002] Valves are mechanisms used to control the opening and closing of pipelines, thereby controlling the transport of fluids. They are widely used in the field of fluid transport. Fluids include liquids, gases, and gas-liquid mixtures. Types of valves include mechanical valves and solenoid valves.

[0003] Currently, most hyperbaric oxygen chamber breathing controllers on the market use purely mechanical valves. These valves are triggered by the user's inhalation, thus controlling oxygen supply. While this design is simple, it has significant drawbacks. When the user inhales, they must overcome the resistance of the internal mechanical structure to trigger oxygen supply, often leading to difficulty and effort in inhaling oxygen. Furthermore, due to the limitations of the mechanical structure's response characteristics, the valve cannot adjust the oxygen supply promptly when the user's breathing rhythm changes, easily resulting in insufficient oxygen supply. This method of oxygen supply, requiring the user to actively overcome resistance, is particularly problematic for elderly, frail, or patients with weakened respiratory function.

[0004] To address these issues, some manufacturers have attempted to use solenoid valves. This approach utilizes the electromagnetic force generated by an electromagnetic coil to move the valve core, thereby controlling gas flow. However, due to the limitations of the solenoid valve's operating principle, it typically only allows for two states: on and off, and cannot provide continuous and precise regulation of gas flow. Utility Model Content

[0005] This invention provides a voice coil motor diaphragm proportional valve and a breathing device. The voice coil motor diaphragm proportional valve can continuously and precisely adjust the gas flow without requiring the user to actively overcome resistance, thereby improving the user's comfort and safety during use.

[0006] In a first aspect, this utility model provides a voice coil motor diaphragm proportional valve, comprising: a valve body having a valve cavity and an air inlet and an air outlet communicating with the valve cavity; a valve nozzle, assembled at the air inlet or the air outlet, the valve nozzle having a channel and a sealing groove communicating with the channel inside; a sealing assembly disposed in the sealing groove, the sealing assembly being slidable along the axial direction of the sealing groove for controlling the opening and closing of the channel; a drive assembly disposed on the valve body, the power output end of the drive assembly extending into the valve cavity; and a transmission assembly disposed in the valve cavity, one end of the transmission assembly being connected to the power output end of the drive assembly, and the other end being connected to the sealing assembly.

[0007] In one possible implementation, the drive assembly includes a voice coil motor and a push rod disposed at the power output end of the voice coil motor, the push rod being axially extendable; the transmission assembly includes: a diaphragm, assembled in the valve cavity, the diaphragm having a first surface and a second surface disposed opposite to each other; a lever, one end of which is connected to the sealing assembly, and the other end abutting against the first surface of the diaphragm; wherein, the end of the push rod abuts against the second surface of the diaphragm.

[0008] In one possible implementation, the transmission assembly also includes a metal plate embedded in the diaphragm, located between the push rod and the lever.

[0009] In one possible implementation, the central region of the diaphragm has a protrusion facing the second surface, and a metal sheet is embedded in the protrusion.

[0010] In one possible implementation, the first surface of the diaphragm is provided with a limiting groove corresponding to the protrusion, and the end of the lever abuts against the bottom wall of the limiting groove.

[0011] In one possible implementation, the valve body includes a valve seat and a valve cover that are assembled together, with a diaphragm sandwiched between the valve seat and the valve cover.

[0012] In one possible implementation, a diaphragm divides the valve chamber into a first chamber and a second chamber, with the end of a push rod located in the second chamber; an air inlet and an air outlet are located on the valve cover and communicate with the first chamber, with a lever located in the first chamber.

[0013] In one possible implementation, the end of the lever is provided with a spherical abutment portion that abuts against the diaphragm.

[0014] In one possible implementation, a sealing surface is provided on one side of the sealing groove adjacent to the channel, and the sealing assembly includes: a limiting member, which is fixedly disposed in the sealing groove; a sealing member, which can slide along the axial direction of the sealing groove, and is connected to a lever, the sealing member including a first state of abutting against the sealing surface and a second state of being separated from the sealing surface; and an elastic member, one end of which is connected to the limiting member and the other end of which is connected to the sealing member.

[0015] Secondly, this utility model embodiment provides a breathing device, including the above-mentioned voice coil motor diaphragm proportional valve.

[0016] The technical solution provided by this utility model embodiment has the following advantages compared with the prior art:

[0017] The voice coil motor diaphragm proportional valve provided in this embodiment of the invention achieves active and precise regulation of gas flow by setting a valve cavity and an air inlet and outlet communicating with the valve cavity within the valve body, cooperating with a channel and sealing groove set within the valve nozzle, and setting a sealing component that can slide axially within the sealing groove. The movement of the sealing component is controlled by the cooperation of a drive component and a transmission component. When gas supply is required, the power output end of the drive component drives the sealing component to move through the transmission component located within the valve cavity, creating an appropriate gap between the sealing component and the channel, thereby regulating the gas flow. Because of the active control method, the user does not need to overcome the mechanical resistance inside the valve body through inhalation, significantly reducing the effort required for oxygen inhalation and improving user comfort. Simultaneously, since the sealing component can slide continuously along the axial direction of the sealing groove, the opening of the channel can be steplessly adjusted, thereby achieving precise control of the gas flow and avoiding the limitations of traditional solenoid valves that can only be switched on and off. This structural design allows the entire control process to actively regulate the gas flow without relying on the user's inhalation force, instead relying on the drive component to actively regulate the gas flow. For example, when the user begins to inhale, the drive component immediately moves the sealing component to provide appropriate airflow; when the user's breathing rhythm changes, the gas flow can also be adjusted in real time by changing the position of the sealing component to ensure adequate oxygen supply. This active adjustment method is particularly suitable for elderly, frail, or patients with weak respiratory function. Furthermore, it allows for continuous and precise adjustment of gas flow without the user actively overcoming resistance, improving the comfort and safety of hyperbaric oxygen therapy. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 A cross-sectional structural schematic diagram of a voice coil motor diaphragm proportional valve provided for an embodiment of this utility model;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A;

[0023] Figure 3 A schematic diagram of the planar structure of a voice coil motor diaphragm proportional valve provided for an embodiment of this utility model;

[0024] Figure 4 A side view structural schematic diagram of a voice coil motor diaphragm proportional valve provided for an embodiment of this utility model;

[0025] Figure 5 A schematic diagram of the structure of a quick connector, valve nozzle, sealing assembly, and lever provided for an embodiment of this utility model;

[0026] Figure 6 This is a partially enlarged structural diagram of a diaphragm and a metal sheet provided for an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Valve body; 11. Valve chamber; 111. First chamber; 112. Second chamber; 12. Air inlet; 13. Air outlet; 14. Valve seat; 15. Valve cover; 16. Clamping groove;

[0029] 2. Valve nozzle; 21. Channel; 22. Sealing groove;

[0030] 3. Sealing assembly; 31. Limiting element; 311. Snap ring; 312. Limiting ring; 32. Sealing element; 321. Sealing head; 322. Sealing gasket; 33. Elastic element;

[0031] 4. Drive components; 41. Voice coil motor; 42. Push rod;

[0032] 5. Transmission assembly; 51. Diaphragm; 511. First surface; 512. Second surface; 513. Protrusion; 514. Limiting groove; 515. Annular thinning groove; 52. Lever; 521. Spherical abutment part; 53. Metal sheet;

[0033] 6. Quick connectors. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0037] like Figures 1-6 As shown, this embodiment of the utility model provides a voice coil motor diaphragm proportional valve, including: a valve body 1, a valve nozzle 2, a sealing assembly 3, a drive assembly 4, and a transmission assembly 5, wherein:

[0038] The valve body 1 has a valve cavity 11 and an air inlet 12 and an air outlet 13 communicating with the valve cavity 11.

[0039] The valve nozzle 2 is installed at the air inlet 12 or the air outlet 13. The valve nozzle 2 has a channel 21 and a sealing groove 22 communicating with the channel 21 inside.

[0040] The sealing component 3 is disposed in the sealing groove 22 and can slide along the axial direction of the sealing groove 22 to control the opening and closing of the channel 21.

[0041] The drive assembly 4 is mounted on the valve body 1, and the power output end of the drive assembly 4 extends into the valve chamber 11.

[0042] The transmission component 5 is located inside the valve chamber 11. One end of the transmission component 5 is connected to the power output end of the drive component 4, and the other end is connected to the sealing component 3.

[0043] In one specific embodiment, the valve nozzle 2 is assembled at the air inlet 12, and a quick connector 6 is provided at the end of the valve nozzle 2 away from the valve body 1, through which an external oxygen device is connected.

[0044] In this invention, a valve cavity 11 is provided within the valve body 1 and communicates with the inlet 12 and outlet 13. A valve nozzle 2 with a channel 21 and a sealing groove 22 is provided at the inlet 12 or outlet 13. An axially sliding sealing component 3 is provided within the sealing groove 22. Control of the sealing component 3 is achieved through the cooperation of a drive component 4 and a transmission component 5, thereby realizing precise regulation of the gas flow rate. Specifically, the power output of the drive component 4 drives the sealing component 3 to move axially within the sealing groove 22 via the transmission component 5. When the sealing component 3 approaches the channel 21, the cross-sectional area of ​​the channel 21 decreases, and the gas flow rate decreases; when the sealing component 3 moves away from the channel 21, the cross-sectional area of ​​the channel 21 increases, and the gas flow rate increases. Linear regulation of the gas flow rate is achieved through the position control of the sealing component 3.

[0045] Specifically, the valve body 1 serves as the basic structure of the entire valve, and its internal valve chamber 11 provides space for gas flow and the installation of various components. The valve nozzle 2 ensures more standardized gas flow, and its internal channel 21 and sealing groove 22 form the basic structure for gas flow regulation. The sealing assembly 3 can slide freely within the sealing groove 22, enabling flow regulation. The drive assembly 4 transmits power to the transmission assembly 5 through its power output end, and the transmission assembly 5 then drives the sealing assembly 3 to move, forming a complete power transmission chain.

[0046] In one specific embodiment, when the voice coil motor diaphragm proportional valve is applied to a hyperbaric oxygen chamber breathing system, it can adjust the gas flow rate in real time according to the user's breathing needs. For example, when the user inhales, the drive component 4 drives the sealing component 3 to move rapidly to increase the cross-sectional area of ​​the channel 21, ensuring sufficient gas supply; when exhalation is detected, the cross-sectional area of ​​the channel 21 is rapidly reduced to achieve precise gas control.

[0047] In related technologies, commonly used gas flow regulating valves mostly employ screw-lift structures or solenoid valve structures. Screw-lift structures require manual adjustment and cannot achieve real-time automatic control; while solenoid valve structures can be automatically controlled, they typically only have two states—on and off—and cannot achieve linear regulation. Furthermore, their response speed is slow, making it difficult to meet the requirements for precise gas flow regulation.

[0048] In this embodiment of the invention, by providing a sealing component 3 that can slide axially along the sealing groove 22, in conjunction with the driving component 4 and the transmission component 5, continuous adjustment of the cross-sectional area of ​​the channel 21 is achieved, thereby enabling precise control of the gas flow rate. Furthermore, this structure is simple in design, has a short power transmission path, and features rapid response. In addition, the sliding fit of the sealing component 3 within the sealing groove 22 ensures good sealing performance and prevents gas leakage.

[0049] In some embodiments, the drive assembly 4 includes a voice coil motor 41 and a push rod 42 disposed at the power output end of the voice coil motor 41, the push rod 42 being axially extendable and retractable; the transmission assembly 5 includes: a diaphragm 51, assembled in the valve cavity 11, the diaphragm 51 having a first surface 511 and a second surface 512 disposed opposite to each other; a lever 52, one end of the lever 52 being connected to the sealing assembly 3, and the other end abutting against the first surface 511 of the diaphragm 51; wherein, the end of the push rod 42 abuts against the second surface 512 of the diaphragm 51.

[0050] In this invention, by specifically configuring the drive assembly 4 as a voice coil motor 41 and its push rod 42, and using a diaphragm 51 and a lever 52 to form the transmission assembly 5, high-precision and fast-response gas flow control is achieved. In operation, the voice coil motor 41 controls the axial extension and retraction of the push rod 42 by energizing it. The end of the push rod 42 abuts against the second surface 512 of the diaphragm 51, causing the diaphragm 51 to deform. The deformation of the diaphragm 51 is transmitted to the sealing assembly 3 through the contact between its first surface 511 and the lever 52, thereby regulating the gas flow. This drive method based on the voice coil motor 41, combined with the diaphragm 51-lever 52 transmission structure, forms a precise and efficient control system.

[0051] Specifically, the voice coil motor 41 serves as the drive source, and the electromagnetic force it generates after being energized is directly converted into the axial movement of the push rod 42. The push rod 42 abuts against the second surface 512 of the diaphragm 51, ensuring precise force transmission. The diaphragm 51, as the core component of the transmission assembly 5, not only transmits motion but also provides a sealing function. One end of the lever 52 is connected to the sealing assembly 3, and the other end abuts against the first surface 511 of the diaphragm 51, forming a complete transmission link.

[0052] In one specific embodiment, when this structure is applied to a medical ventilator, the voice coil motor 41 can adjust the position of the push rod 42 in real time according to the patient's respiratory rate. For example, when the patient inhales, the voice coil motor 41 quickly drives the push rod 42 forward, causing the sealing assembly 3 to move through the transmission of the diaphragm 51 and the lever 52, increasing the cross-sectional area of ​​the gas channel 21; when the patient exhales, the adjustment is reversed to achieve precise respiratory control.

[0053] In this embodiment of the invention, a voice coil motor 41 is used as the drive source, which has the advantages of fast response speed (down to millisecond level) and high control precision. Meanwhile, the transmission structure composed of the diaphragm 51 and the lever 52 not only simplifies the transmission path and reduces mechanical losses, but also provides a certain buffering effect through the deformation characteristics of the diaphragm 51, avoiding the impact that may be caused by rigid transmission. Furthermore, the three-stage transmission structure of push rod 42-diaphragm 51-lever 52 ensures the smoothness and reliability of the movement.

[0054] In some embodiments, the voice coil motor 41 has a rated thrust of 1-3 N and a response time of less than 10 ms.

[0055] In this invention, by specifying the rated thrust of the voice coil motor 41 as 1-3N and the response time as less than 10ms, precise control of the driving performance is achieved. During operation, these performance parameters ensure that the voice coil motor 41 can respond to control signals quickly and accurately, while providing appropriate driving force.

[0056] Specifically, the rated thrust range of 1-3N is precisely calculated to overcome the resistance required for diaphragm deformation 51 and elastic element compression 33, without generating excessive impact force. A response time of less than 10ms ensures the control system can achieve millisecond-level adjustment, meeting the requirements of rapid control. The combination of these two parameters enables precise and rapid flow regulation.

[0057] In one specific embodiment, the importance of these performance parameters is particularly pronounced when the valve is used in a ventilator system. For example, when regulating airflow to follow the patient's breathing rhythm, the voice coil motor 41 can respond to changes in the respiratory signal within 10 ms and precisely control the airflow magnitude with a thrust of 1-3 N, ensuring comfort and safety during the breathing process.

[0058] In some embodiments, the diaphragm 51 is made of silicone rubber material with a thickness of 0.3-1.0 mm and a Shore hardness of 40-60 degrees.

[0059] In this invention, by specifying the material of the diaphragm 51 as silicone rubber and specifying its thickness as 0.3-1.0 mm and its Shore hardness as 40-60 degrees, the performance of the diaphragm 51 is optimized. During operation, these precise parameter settings ensure that the diaphragm 51 has sufficient flexibility to deform while maintaining the necessary strength to transmit force.

[0060] Specifically, silicone rubber material exhibits excellent temperature resistance, aging resistance, and elastic recovery. A thickness range of 0.3-1.0 mm ensures that the diaphragm 51 is neither too thin (lacking strength) nor too thick (affecting deformation sensitivity). A Shore hardness of 40-60 degrees ensures that the diaphragm 51 possesses appropriate stiffness and elasticity, accurately transmitting displacement while maintaining good sealing performance.

[0061] Although the above scheme sets up a diaphragm 51 as a transmission component 5, relying solely on elastic materials for force transmission can easily lead to problems such as uneven deformation and inaccurate force transmission, and may also cause material fatigue during long-term use.

[0062] In some embodiments, the transmission assembly 5 further includes a metal sheet 53 embedded in the diaphragm 51, the metal sheet 53 being located between the push rod 42 and the lever 52.

[0063] In this invention, by embedding a metal sheet 53 inside the diaphragm 51 and positioning the metal sheet 53 between the push rod 42 and the lever 52, the force transmission is optimized and the strength of the diaphragm 51 is enhanced. During operation, the movement of the push rod 42 is first transmitted to the metal sheet 53. The metal sheet 53, acting as a rigid support, bears the force of the push rod 42 and distributes it evenly. Then, the force is transmitted to the lever 52 through the elastic deformation of the diaphragm 51 material, forming a composite transmission structure of "rigid-elastic-rigid".

[0064] Specifically, the metal sheet 53 is made of copper and is embedded in the diaphragm 51 as a rigid reinforcement, positioned precisely between the action areas of the push rod 42 and the lever 52. This arrangement ensures that the force exerted by the push rod 42 acts primarily on the metal sheet 53, avoiding potential localized deformation or damage that might occur from direct application to the rubber material. Simultaneously, the presence of the metal sheet 53 increases the stiffness of the diaphragm 51 in this region, improving force transmission efficiency.

[0065] In one specific embodiment, when the valve operates at high frequency, the presence of the metal plate 53 significantly improves the stability of the transmission. For example, under conditions where dozens of adjustments are made per minute, the metal plate 53 can ensure that the force of the push rod 42 is accurately transmitted to the lever 52, while preventing the diaphragm 51 from fatigue damage due to frequent deformation.

[0066] In this embodiment of the invention, by embedding a metal sheet 53 within the diaphragm 51, both the sealing performance of the diaphragm 51 and reliable force transmission support are maintained. The rigidity of the metal sheet 53 ensures the accurate transmission of the force applied by the push rod 42, avoiding force transmission errors caused by deformation of the rubber material. Simultaneously, the metal sheet 53 also protects the diaphragm 51, preventing material damage caused by localized stress concentration and extending the service life of the diaphragm 51.

[0067] In some embodiments, the central region of the diaphragm 51 is provided with a protrusion 513 facing the second surface 512, and the metal sheet 53 is built into the protrusion 513.

[0068] In this invention, by providing a protrusion 513 facing the second surface 512 in the central region of the diaphragm 51 and embedding a metal sheet 53 within the protrusion 513, the force transmission structure is optimized. During operation, the push rod 42 contacts the protrusion 513. The presence of the protrusion 513 makes the force of the push rod 42 more concentrated, while the embedded metal sheet 53 provides structural support for the protrusion 513, avoiding local deformation and ensuring precise force transmission.

[0069] Specifically, the protrusion 513 forms a localized raised structure on the surface of the diaphragm 51, which creates a good contact fit with the end of the push rod 42. The metal sheet 53 is completely embedded within the protrusion 513, which neither affects the overall sealing performance of the diaphragm 51 nor compromises its supporting function. The protrusion 513 also alters the local geometry of the diaphragm 51, giving it better mechanical properties in that area.

[0070] In one specific embodiment, the presence of the protrusion 513 provides more precise displacement control when the valve requires minute flow regulation. For example, when regulating gas flow, the pressure of the push rod 42 on the protrusion 513 can be more accurately transmitted to the metal plate 53, and then transmitted to the lever 52 through the diaphragm 51, achieving precise displacement control.

[0071] Furthermore, in this embodiment of the invention, a locally reinforced force transmission structure is formed by providing a protrusion 513 at the center of the diaphragm 51 and embedding the metal sheet 53 therein. This design not only improves the contact stability between the push rod 42 and the diaphragm 51, but also optimizes the force transmission path through the geometry of the protrusion 513. At the same time, the metal sheet 53 is completely enclosed within the protrusion 513, avoiding interference with other components and ensuring the reliability of the structure.

[0072] In some embodiments, the first surface 511 of the diaphragm 51 is provided with a limiting groove 514 corresponding to the protrusion 513, and the end of the lever 52 abuts against the bottom wall of the limiting groove 514.

[0073] In this invention, a limiting groove 514 corresponding to the protrusion 513 is provided on the first surface 511 of the diaphragm 51, and the end of the lever 52 abuts against the bottom wall of the limiting groove 514, thereby achieving precise guidance and limiting of the movement of the lever 52. During operation, the limiting groove 514 guides the lever 52, ensuring that the lever 52 always remains on the correct movement trajectory. Simultaneously, the depth of the limiting groove 514 also limits the range of motion of the lever 52.

[0074] Specifically, the position of the limiting groove 514 corresponds to the protrusion 513, and this correspondence ensures that the force of the push rod 42 and the lever 52 can be accurately transmitted. The bottom wall of the limiting groove 514 provides a stable contact surface for the lever 52, preventing the lever 52 from deviating during movement. At the same time, the presence of the limiting groove 514 also enhances the structural strength of the diaphragm 51 in this area.

[0075] Furthermore, in this embodiment of the invention, the limiting groove 514 structure not only provides accurate motion guidance for the lever 52, but also limits the range of motion of the lever 52 by abutting against the bottom wall. This design significantly improves the stability and reliability of the transmission mechanism, and also facilitates the installation and positioning of the lever 52. In addition, the corresponding arrangement of the limiting groove 514 and the protrusion 513 forms a complete force transmission system, further improving control accuracy.

[0076] In some embodiments, the valve body 1 includes a valve seat 14 and a valve cover 15 that are assembled together, and a diaphragm 51 is sandwiched between the valve seat 14 and the valve cover 15.

[0077] In this invention, the valve body 1 is designed as a valve seat 14 and a valve cover 15 that are assembled together, with a diaphragm 51 sandwiched between them, thus achieving a modular design and convenient assembly. During operation, the valve seat 14 and the valve cover 15 are assembled to form a sealed valve cavity 11 space, with the diaphragm 51 sandwiched between them, which not only provides a sealing function but also facilitates replacement and maintenance.

[0078] Specifically, the assembly design of the valve seat 14 and valve cover 15 allows the entire valve body 1 to be easily disassembled and assembled. The outer periphery of the diaphragm 51 is clamped and fixed by the valve seat 14 and valve cover 15. This clamping method not only ensures the positional accuracy of the diaphragm 51 but also provides a reliable sealing effect. At the same time, this structural design also facilitates the replacement of the diaphragm 51 during maintenance.

[0079] In one specific embodiment, when routine maintenance of the valve or replacement of the diaphragm 51 is required, the operation can be easily performed by simply disconnecting the valve seat 14 and the valve cover 15. For example, during periodic maintenance and inspection, the valve cover 15 can be quickly removed to check the condition of the diaphragm 51 and replace it if necessary, greatly reducing maintenance time.

[0080] In some embodiments, a clamping groove 16 is formed between the valve seat 14 and the valve cover 15, and the outer edge of the diaphragm 51 is clamped in the clamping groove 16.

[0081] In this invention, a more reliable sealing and fixing effect is achieved by providing a clamping groove 16 between the valve seat 14 and the valve cover 15, and clamping the outer edge of the diaphragm 51 within the clamping groove 16. During operation, the special structure of the clamping groove 16 can apply uniform pressure to the outer edge of the diaphragm 51, ensuring that the diaphragm 51 is reliably fixed in all directions.

[0082] Specifically, the clamping groove 16 is designed with a cavity structure that matches the outer edge of the diaphragm 51. When the valve seat 14 and valve cover 15 are assembled, the outer edge of the diaphragm 51 is pressed into the clamping groove 16, and the groove wall applies a combined radial and axial pressure to the diaphragm 51. This structural design not only increases the sealing area but also provides better positioning.

[0083] In some embodiments, the diaphragm 51 divides the valve chamber 11 into a first chamber 111 and a second chamber 112, and the end of the push rod 42 is located in the second chamber 112; the air inlet 12 and the air outlet 13 are disposed on the valve cover 15 and communicate with the first chamber 111, and the lever 52 is located in the first chamber 111.

[0084] In this invention, the valve chamber 11 is divided into a first chamber 111 and a second chamber 112 by a diaphragm 51, and the positions of the push rod 42, air inlet 12, air outlet 13, and lever 52 are rationally arranged to achieve effective isolation of the air circuit system. During operation, the push rod 42 moves in the second chamber 112, while the gas flows in the first chamber 111. This separation design ensures complete isolation between the drive system and the air circuit system.

[0085] Specifically, the diaphragm 51, through its sealing function, divides the valve chamber 11 into two independent spaces: the first chamber 111 contains an air inlet 12 and an air outlet 13, forming a gas flow channel 21; the second chamber 112 houses the push rod 42, serving as the driving space. The lever 52, located in the first chamber 111, transmits force through its cooperation with the diaphragm 51. This spatial arrangement ensures the normal operation of all components while preventing gas leakage.

[0086] In one specific embodiment, the separation of the first chamber 111 and the second chamber 112 is particularly important when conveying high-pressure gas. For example, when conveying oxygen at a pressure of 0.6 MPa, even if the push rod 42 moves frequently, there will be no gas leakage or cross-contamination, ensuring the safety of the system.

[0087] In some embodiments, the end of the lever 52 is provided with a spherical abutment portion 521, which abuts against the diaphragm 51.

[0088] In this invention, by providing a spherical abutment portion 521 at the end of the lever 52 and having it abut against the diaphragm 51, the optimized distribution of contact stress is achieved. During operation, the spherical abutment portion 521 and the diaphragm 51 form point contact. This contact method not only reduces local stress concentration but also maintains a stable contact state when the diaphragm 51 deforms.

[0089] Specifically, the curved design of the spherical abutment portion 521 makes the contact between it and the diaphragm 51 smoother. Regardless of the deformation state of the diaphragm 51, the spherical abutment portion 521 can maintain good contact, avoiding damage to the diaphragm 51 that may be caused by edge contact. This structural design also allows for slight angular deviations in the lever 52 during movement, improving the system's adaptability.

[0090] In one specific embodiment, the effect of the ball-shaped contact portion 521 is particularly evident when the valve is adjusted at high frequency. For example, even when the diaphragm 51 is constantly deformed during hundreds of adjustments per minute, the ball-shaped contact portion 521 can still maintain stable contact and will not cause wear or damage to the diaphragm 51.

[0091] In some embodiments, a sealing surface is provided on one side of the sealing groove 22 adjacent to the channel 21, and the sealing assembly 3 includes: a limiting member 31, which is fixedly disposed in the sealing groove 22; a sealing member 32, which can slide along the axial direction of the sealing groove 22, the sealing member 32 is connected to the lever 52, and the sealing member 32 includes a first state of abutting against the sealing surface and a second state of being separated from the sealing surface; and an elastic member 33, one end of which is connected to the limiting member 31 and the other end of which is connected to the sealing member 32.

[0092] In this invention, a complete sealing assembly 3 structure, including a limiting member 31, a sealing member 32, and an elastic member 33, is provided within the sealing groove 22, thereby achieving a reliable sealing function. During operation, the sealing member 32 remains in contact with the sealing surface under the action of the elastic member 33, forming a sealed state. When it is necessary to open the channel 21, the sealing member 32 overcomes the force of the elastic member 33 and separates from the sealing surface under the action of the lever 52.

[0093] Specifically, the limiting member 31 is fixed within the sealing groove 22, providing support for the elastic member 33. The sealing member 32 can slide axially along the sealing groove 22 and its position is controlled by its connection with the lever 52. One end of the elastic member 33 is connected to the limiting member 31, and the other end is connected to the sealing member 32, providing a continuous force for sealing. The sealing member 32 has two working states: a first state (closed state) abutting against the sealing surface and a second state (open state) separated from the sealing surface.

[0094] In one specific embodiment, when the system is in standby mode, the elastic element 33 pushes the seal 32 to tightly abut against the sealing surface, ensuring a complete seal. When gas supply is required, the control lever 52 drives the seal 32 to compress the elastic element 33, causing the seal 32 to separate from the sealing surface, thus achieving precise gas control.

[0095] In some embodiments, the limiting member 31 includes: a retaining spring 311, which is engaged in the sealing groove 22; and a limiting ring 312, one end of which abuts against the retaining spring 311 and the other end of which abuts against the elastic member 33.

[0096] In this invention, by designing the limiting member 31 as a combination of a retaining spring 311 and a limiting ring 312, a simple and reliable assembly method is achieved. During operation, the retaining spring 311 is engaged in the sealing groove 22, providing fixed support for the limiting ring 312; one end of the limiting ring 312 abuts against the retaining spring 311, and the other end abuts against the elastic member 33, forming a stable force transmission path.

[0097] Specifically, the retaining ring 311 is a standard part that can be easily inserted into the preset slot of the sealing groove 22. The design of the limiting ring 312 not only ensures reliable contact with the retaining ring 311 but also provides a good support surface for the elastic element 33. This combined structure is not only simple to assemble but also able to withstand the fatigue stress caused by long-term reciprocating motion.

[0098] In one specific embodiment, the advantages of this structural design are particularly evident when maintenance of the sealing assembly 3 is required. For example, the retaining ring 311 can be removed with simple disassembly tools, which in turn allows for easy removal of the limiting ring 312 and the elastic element 33, greatly improving maintenance efficiency.

[0099] Furthermore, in this embodiment of the invention, the combined design of the retaining ring 311 and the limiting ring 312 ensures both ease of assembly and reliability in use. The retaining ring 311 provides radial positioning, while the limiting ring 312 provides axial support; together, they form a stable limiting structure. This design also facilitates the selection of standard parts, reducing production costs.

[0100] In some embodiments, the seal 32 includes a sealing head 321 and a sealing gasket 322 disposed at the end of the sealing head 321, the sealing gasket 322 being used to abut against the sealing surface.

[0101] In this invention, a more reliable sealing effect is achieved by providing a sealing gasket 322 at the end of the sealing head 321 and ensuring that the sealing gasket 322 abuts against the sealing surface. During operation, a flexible seal is formed between the sealing gasket 322 and the sealing surface, maintaining good sealing performance even after long-term use.

[0102] Specifically, the sealing gasket 322 provides a flexible contact surface to the rigid sealing head 321. When the sealing head 321 presses against the sealing surface, the sealing gasket 322 deforms appropriately, ensuring a continuous sealing line between it and the sealing surface. This flexible sealing method not only improves the sealing effect but also reduces wear on the sealing surface.

[0103] In one specific embodiment, the role of the sealing gasket 322 is more pronounced when the valve operates in different temperature environments. For example, within a temperature range of -20°C to 60°C, even if the sealing surface and sealing head 321 undergo slight dimensional changes due to temperature variations, the sealing gasket 322 can maintain an effective seal through its elastic deformation.

[0104] In some embodiments, the second surface 512 of the diaphragm 51 is provided with an annular thinning groove 515 around the protrusion 513 so that the diaphragm 51 can be deformed along the axial direction.

[0105] In this invention, by providing an annular thinning groove 515 around the protrusion 513 on the second surface 512 of the diaphragm 51, the deformation characteristics of the diaphragm 51 are optimized. During operation, the presence of the thinning groove gives the diaphragm 51 better deformability in this area, thereby reducing the force required for actuation and improving control sensitivity.

[0106] Specifically, the annular thinning groove 515 makes the thickness of the diaphragm 51 in this region less than in other regions. This structural design creates a deformation-prone area; when the push rod 42 acts on the protrusion 513, the thinning groove area deforms preferentially, forming a hinge-like effect. Simultaneously, the annular distribution of the thinning grooves ensures the symmetry and uniformity of the deformation.

[0107] In one specific embodiment, the thinning groove plays a more significant role when minute flow rate adjustments are required. For example, when adjusting the flow rate to less than 1 L / min, even a small driving force can be precisely controlled through the deformation of the thinning groove region, improving the system's adjustment accuracy.

[0108] This utility model provides a breathing device, including the aforementioned voice coil motor diaphragm proportional valve. The breathing device can be a hyperbaric oxygen chamber breathing controller or an adaptive ventilator.

[0109] In this invention, a voice coil motor diaphragm proportional valve is applied to a breathing device, achieving precise control of the breathing gas. During operation, this valve can quickly and accurately adjust the gas flow rate according to the control requirements of the breathing device, thereby improving the control performance of the breathing device.

[0110] Specifically, the proportional valve is integrated into the breathing device, and its rapid response and precise control capabilities enable real-time adjustment of the breathing gas flow. The rapid response (less than 10ms) of the voice coil motor 41 allows it to promptly follow changes in the breathing rhythm, while precise flow control ensures the stability of the gas supply.

[0111] In one specific embodiment, the advantages of this proportional valve are particularly evident when the respiratory device is used for medical treatment. For example, when providing respiratory therapy to critically ill patients, it can adjust the airflow in real time according to the patient's breathing needs, providing more comfortable and safer respiratory support.

[0112] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0113] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0114] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A voice coil motor diaphragm proportional valve characterized by, include: Valve body (1), the valve body (1) having a valve cavity (11) and an air inlet (12) and an air outlet (13) communicating with the valve cavity (11); A valve nozzle (2) is installed at the air inlet (12) or the air outlet (13). The valve nozzle (2) has a channel (21) and a sealing groove (22) communicating with the channel (21). A sealing assembly (3) is disposed in the sealing groove (22). The sealing assembly (3) can slide along the axial direction of the sealing groove (22) to control the opening and closing of the channel (21). A drive assembly (4) is disposed on the valve body (1), and the power output end of the drive assembly (4) extends into the valve cavity (11); A transmission assembly (5) is disposed in the valve chamber (11). One end of the transmission assembly (5) is connected to the power output end of the drive assembly (4), and the other end is connected to the sealing assembly (3).

2. The voice coil motor diaphragm proportional valve of claim 1, wherein, The drive assembly (4) includes a voice coil motor (41) and a push rod (42) disposed at the power output end of the voice coil motor (41), the push rod (42) being axially extendable and retractable; the transmission assembly (5) includes: A diaphragm (51) is assembled in the valve cavity (11), the diaphragm (51) having a first surface (511) and a second surface (512) disposed opposite to each other; A lever (52), one end of which is connected to the sealing assembly (3), and the other end abuts against the first surface (511) of the diaphragm (51); The end of the push rod (42) abuts against the second surface (512) of the diaphragm (51).

3. The voice coil motor diaphragm proportional valve of claim 2, wherein, The transmission assembly (5) also includes a metal plate (53) embedded in a diaphragm (51), the metal plate (53) being located between the push rod (42) and the lever (52).

4. The voice coil motor diaphragm proportional valve of claim 3, wherein, The central region of the diaphragm (51) is provided with a protrusion (513) facing the second surface (512), and the metal sheet (53) is built into the protrusion (513).

5. The voice coil motor diaphragm proportional valve of claim 4, wherein, The first surface (511) of the diaphragm (51) is provided with a limiting groove (514) corresponding to the protrusion (513), and the end of the lever (52) abuts against the bottom wall of the limiting groove (514).

6. The voice coil motor diaphragm proportional valve of claim 2, wherein, The valve body (1) includes a valve seat (14) and a valve cover (15) that are assembled together, and the diaphragm (51) is sandwiched between the valve seat (14) and the valve cover (15).

7. The voice coil motor diaphragm proportional valve of claim 6, wherein, The diaphragm (51) divides the valve chamber (11) into a first chamber (111) and a second chamber (112), and the end of the push rod (42) is located in the second chamber (112); The air inlet (12) and the air outlet (13) are located on the valve cover (15) and communicate with the first chamber (111). The lever (52) is located in the first chamber (111).

8. The voice coil motor diaphragm proportional valve of claim 2, wherein, The end of the lever (52) is provided with a spherical abutment (521), which abuts against the diaphragm (51).

9. The voice coil motor diaphragm proportional valve of claim 2, wherein, The sealing groove (22) has a sealing surface on the side adjacent to the channel (21), and the sealing assembly (3) includes: The limiting member (31) is fixedly disposed in the sealing groove (22); The seal (32) is slidable along the axial direction of the sealing groove (22), the seal (32) is connected to the lever (52), and the seal (32) includes a first state of abutting against the sealing surface and a second state of being separated from the sealing surface; An elastic element (33) is provided, with one end connected to the limiting element (31) and the other end connected to the sealing element (32).

10. A breathing apparatus characterized by, Includes the voice coil motor diaphragm proportional valve as described in any one of claims 1-9.

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