CN115317755B - Exhalation valve and exhalation valve system - Google Patents
Exhalation valve and exhalation valve system Download PDFInfo
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- CN115317755B CN115317755B CN202210988011.XA CN202210988011A CN115317755B CN 115317755 B CN115317755 B CN 115317755B CN 202210988011 A CN202210988011 A CN 202210988011A CN 115317755 B CN115317755 B CN 115317755B
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- 230000006835 compression Effects 0.000 claims abstract description 23
- 238000007906 compression Methods 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims description 44
- 230000008859 change Effects 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 13
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000013016 damping Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 206010002091 Anaesthesia Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000037005 anaesthesia Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
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- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Lift Valve (AREA)
- Check Valves (AREA)
Abstract
本发明公开了一种呼气阀，包括阀口组件和控制组件，所述阀口组件的阀膜片面向所述控制组件的驱动侧，所述控制组件的驱动侧伸出的顶杆抵接在所述阀膜片以通过推动所述阀膜片控制阀口开启程度，还包括至少三组围绕所述顶杆设置且能够沿所述顶杆顶出方向弹性浮动调节的浮动连接装置，所述浮动连接装置的两端分别直接或间接地连接于所述阀口组件和所述控制组件。允许控制组件轴心和阀口组件轴心在结合前存在一定不平行，而在安装结合后，通过浮动连接装置的不同压缩量变化自动找正轴心平行，避免控制下压过程中的不稳定，以有效地解决顶杆相对阀膜片的位置关系控制不好的问题。本发明还公开了一种包括上述呼气阀系统的呼气阀。
The present invention discloses an exhalation valve, including a valve assembly and a control assembly, wherein the valve diaphragm of the valve assembly faces the driving side of the control assembly, and the push rod extending from the driving side of the control assembly abuts against the valve diaphragm to control the degree of opening of the valve port by pushing the valve diaphragm, and also includes at least three groups of floating connection devices arranged around the push rod and capable of elastic floating adjustment along the ejection direction of the push rod, and the two ends of the floating connection device are directly or indirectly connected to the valve assembly and the control assembly respectively. It is allowed that the axis of the control assembly and the axis of the valve assembly are not parallel to each other before being combined, and after being installed and combined, the axis parallelism is automatically aligned through the different compression changes of the floating connection device, avoiding instability in the control downward pressure process, so as to effectively solve the problem of poor control of the position relationship of the push rod relative to the valve diaphragm. The present invention also discloses an exhalation valve including the above-mentioned exhalation valve system.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to an exhalation valve system and an exhalation valve comprising the exhalation valve system.
Background
The exhalation valve is closed to inflate the ventilation engine in the inhalation state, the driving gas presses the breathing gas into the lungs of the patient through the specific breathing circuit channel, and the exhalation valve is opened in the exhalation state, so that the lungs of the patient are contracted. The expired gas pushes the drive gas to exit through the exhalation valve and into the exhaust treatment system. Upon exhalation, the exhalation valve may maintain a certain compressed state to achieve the exhale PEEP. When the fresh gas injection flow exceeds the tidal volume, the ventilation engine stops working. The inhalation and exhalation will be achieved by opening and closing the exhalation valve. Therefore, the response and controllability of the exhalation valve are very important to the performance of the anesthesia machine.
In anesthesia systems, an exhalation valve cooperates with a ventilation engine to control the inhalation and exhalation of a patient. In addition, positive End Expiratory Pressure (PEEP) is also achieved by controlling the exhalation valve opening pressure. Most of the existing expiratory valves are in a pilot pneumatic control mode, and the pressure of a pilot cavity is regulated by matching a proportional valve with a throttling orifice, so that the lower pressure of an expiratory valve diaphragm is changed. Thereby achieving inspiration and expiration actions and different PEEP requirements. The control mode is difficult to accurately control PEEP, and has certain delay lag and action inertia. The exhalation valve also directly controls the downward pressure of the exhalation valve membrane through the voice coil motor, and the exhalation valve response block is accurate in control. To eliminate the effect of the accumulated dimensional errors on the control accuracy and control range, the voice coil and the valve body are typically integrated. With such a design, cleaning and disinfection (cleaning of the voice coil portion is impossible) cannot be performed.
The existing expiratory valve is mostly integrated, and a user can not clean and disinfect. In addition, in the process of pushing the valve membrane by the ejector rod, because of the problems of installation precision and the like, the centering property of the ejector rod and the valve membrane is very easy to be poor, namely, the expected pushing direction of the valve membrane and the actual pushing direction of the ejector rod deviate, so that the use effect is unstable in the later use.
In summary, how to effectively solve the problem that the positional relationship between the ejector rod of the split exhalation valve and the valve membrane is not well controlled is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide an exhalation valve system that can effectively solve the problem of poor control of the positional relationship of the ejector pin of the split exhalation valve with respect to the valve membrane, and a second object of the present invention is to provide an exhalation valve that includes the above exhalation valve system.
In order to achieve the first object, the present invention provides the following technical solutions:
The utility model provides an exhalation valve, includes valve port subassembly and control assembly, valve diaphragm of valve port subassembly is towards control assembly's drive side, the ejector pin that control assembly's drive side stretched out is in the butt valve diaphragm is in order to control valve port opening degree through promoting valve diaphragm, still include at least three group around the ejector pin sets up and can follow the ejector pin is ejecting direction elasticity and float the floating connection device who adjusts, the both ends of floating connection device directly or indirectly connect respectively in valve port subassembly with control assembly.
According to the technical scheme, three groups of floating connecting devices are arranged around the ejector rod so as to form a three-point support between the valve port assembly and the control assembly, and the three-point support is stable. And the position relation of two ends of one group of floating connecting devices can be arbitrarily adjusted, so that the position relation of two points of the valve port assembly and the control assembly at the position can be changed, and the angular position relation of the ejector rod relative to the valve port assembly can be changed, namely the angular position relation of the ejector rod relative to the valve membrane can be changed. So as to allow for some non-parallelism of the control assembly hub and the valve port assembly hub prior to bonding. Once the floating connecting device is installed and combined, the axis is automatically aligned to be parallel through different compression amount changes of the floating connecting device, so that instability in the pressing process is avoided. In summary, the exhalation valve can effectively solve the problem that the position relation of the ejector rod of the split exhalation valve relative to the valve membrane is not well controlled.
Preferably, the floating part and the fixed part are included; the floating connecting device comprises a floating guide rod, a bushing and a compression elastic piece, wherein the floating guide rod is in threaded connection with the bushing to form a bolt pair structure, two ends of the compression elastic piece are respectively propped against the floating part and the fixing part, the floating guide rod sequentially penetrates through the floating part, the compression elastic piece and the fixing part and then is locked through the bushing, so that the bushing can be used for rotating and moving on the floating guide rod to change the distance between the floating part and the fixing part, and the control assembly is fixedly arranged on the floating part, and the fixing part is directly or indirectly arranged on the valve port assembly.
Preferably, the fixing part is a U-shaped plate surrounding the control assembly, and the U-shaped bottom and the opening parts at two ends of the U-shaped plate are respectively provided with the floating connecting device.
Preferably, the valve port assembly is provided with a window, the valve diaphragm is arranged in the window, a cover type positioning pressing plate is arranged on the driving side of the valve port assembly, the ejector rod penetrates through the middle of the cover type positioning pressing plate to be exposed on the driving side, and the edge of the cover type positioning pressing plate abuts against the edge of the window and the edge of the valve diaphragm.
Preferably, the driving side is provided with a damping air hole penetrating into the inner cavity of the control assembly.
Preferably, the control assembly is a voice coil motor having a built-in annular magnet, the voice coil being disposed in an annular air gap at the annular magnet.
Preferably, the valve port assembly is detachable from the floating connection and is removable for cleaning.
Preferably, the valve port assembly is provided with an exhaust gas outlet, an automatic exhaust port and a manual exhaust port, the valve membrane is used for adjusting the opening degree of the valve port between the exhaust gas outlet and the automatic exhaust port, and the exhaust gas outlet and the manual exhaust port are arranged in a penetrating way.
Preferably, a diaphragm hard core is arranged in the middle of the valve diaphragm, a spherical groove is formed in the middle of the diaphragm hard core, and a spherical protrusion matched with the spherical groove is formed in the top end of the ejector rod.
In order to achieve the second object, the invention further provides an exhalation valve system, which comprises any one of the exhalation valves, a breathing circuit, a manual-automatic switching valve and a ventilation engine for connecting driving air, wherein an air outlet of the ventilation engine and an air inlet of the exhalation valve are communicated to the breathing circuit through the manual-automatic switching valve. Because the exhalation valve has the technical effects, the exhalation valve system with the exhalation valve should also have corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration showing an exhalation valve according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exhalation valve according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an exhalation valve provided in an embodiment of the present invention;
FIG. 4 is a schematic view of a longitudinal cross-section of an exhalation valve provided in an embodiment of the present invention;
Fig. 5 is a schematic diagram of an exhalation valve system according to an embodiment of the present invention.
The figures are marked as follows:
the exhalation valve 100, the ventilation engine 200, the gas isolation device 300, the manual bellows 400, the manual-automatic switching valve 500, and the breathing circuit 600;
A non-detachable portion 10, a detachable portion 20, an upper housing 30, a lower housing 40, and an exhaust gas discharge joint 50;
the device comprises a control assembly 11, a mandril 12, a floating connecting device 13, a floating part 14, a fixed part 15, a cover-type positioning pressing plate 16, a damping air hole 17, a ring-shaped magnet 18 and a voice coil 19;
A floating guide rod 13-1, a bushing 13-2, and a compression elastic member 13-3;
valve port assembly 21, valve membrane 22, window 23, exhaust outlet 24, automatic exhaust outlet 25, manual exhaust outlet 26, membrane hard core 27, valve port 28;
the valve port assembly axis A and the ejector rod deflection range B;
Wherein the arrows indicate the direction of fluid flow therein.
Detailed Description
The embodiment of the invention discloses an exhalation valve system, which is used for effectively solving the problem that the position relation of a push rod of a split exhalation valve relative to a valve membrane is not well controlled.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, fig. 1 is a schematic disassembled view of an exhalation valve according to an embodiment of the present invention, fig. 2 is a schematic structural view of an exhalation valve according to an embodiment of the present invention, fig. 3 is a schematic cross-sectional structural view of an exhalation valve according to an embodiment of the present invention, fig. 4 is a schematic longitudinal sectional structural view of an exhalation valve according to an embodiment of the present invention, and fig. 5 is a schematic structural view of an exhalation valve system according to an embodiment of the present invention.
In some embodiments, the present embodiment provides an exhalation valve 100 as a medical device. The particular exhalation valve includes a valve port assembly 21 and a control assembly 11.
Wherein the valve membrane 22 of the valve port assembly 21 faces the driving side of the control assembly 11, and wherein the stem 12 protruding from the driving side of the control assembly 11 abuts against the valve membrane 22, so that the opening degree of the valve port 28 of the valve port assembly 21 can be controlled by pushing the valve membrane 22.
Wherein the valve membrane 22 is deformed or integrally moved to change the relative position with the valve port 28 to change the opening degree of the valve port 28. The movement (or partial deformation) of the valve membrane 22 relative to the valve port 28 can move along the direction of the valve port 28 to change the distance between the valve membrane and the valve port 28 and further change the opening degree of the valve port 28, and can also move along the transverse direction of the valve port 28 to change the area covering the valve port 28 and further change the opening degree of the valve port 28. The valve port 28 is disposed between two connection ports, one of which is typically an exhaust outlet 24 for connecting to an exhaust system, and the other is typically an exhaust outlet for connecting to a human body, wherein the exhaust outlet for connecting to a human body is typically an automatic exhaust outlet 25.
The control assembly 11 mainly comprises a push rod 12 and a driving part for driving the push rod 12 to move along the extending direction so as to generate thrust, wherein the driving part can be an electric cylinder, a hydraulic telescopic cylinder or other driving structures. As shown in the drawings, wherein the control assembly 11 is a voice coil motor. Specifically, the structure of the control assembly 11 is not limited herein, that is, the driving portion that drives the ejector rod 12 to eject in the extending direction may be correspondingly disposed according to needs, but at least the driving portion may be capable of moving in the extending direction by driving the ejector rod 12 to push the valve membrane 22 to locally deform or integrally move so as to change the opening degree of the corresponding valve port 28.
In some embodiments, the positional relationship between the valve port assembly 21 and the control assembly 11 may be constrained by the floating connection 13. Wherein the floating connection means 13 refers to a supporting means capable of elastic floating adjustment in a predetermined direction so as to adjust and change the positional relationship of both end connection ends. The floating connection device 13 mainly includes an elastic portion and a locking portion, wherein two ends of the elastic portion support the two-end connection objects respectively, and the locking portion can change the deformation degree of the elastic portion, which is generally realized by pushing against the connection objects, so as to adjust the position relationship of the two-end connection objects. The floating connection 13 may have a certain pre-compression amount, ensuring that the exhalation valve 100 does not change the amount of compression of the floating connection 13 over the entire operating range, so as to affect the control accuracy.
At least three sets of floating connection devices 13 are arranged around the ejector rod 12 and can elastically float and adjust along the ejection direction of the ejector rod 12, wherein two ends of the floating connection devices 13 are respectively connected with the valve port assembly 21 and the control assembly 11 directly or indirectly so as to support between the valve port assembly 21 and the control assembly 11 to restrict the position relationship between each other. It should be noted that, the number of the floating connection devices 13 may be, specifically, three, four, five or even more floating connection devices 13, wherein at least three or even all of the floating connection devices 13 are disposed around the jack 12, and when only three floating connection devices 13 are disposed, at least three or all of the three floating connection devices are disposed.
Wherein both ends of the floating connection device 13 are directly or indirectly connected to the valve port assembly 21 and the control assembly 11, respectively, specifically, one end of the floating connection device 13 is directly or indirectly connected to the valve port assembly 21, and the other end is directly or indirectly connected to the control assembly 11. The term directly or indirectly connected means that the two may be directly connected or indirectly connected through other structures. For example, the floating connection device 13 may be directly connected to the control assembly 11 at one end and directly connected to the base (the upper base 30 and the lower base 40) at the other end, and the valve port assembly 21 is fixedly mounted on the base, so that the other end of the floating connection device 13 is indirectly connected to the valve port assembly 21 through the base.
In some embodiments, three sets of floating linkages 13 are disposed about the stem 12 to form a three-point support between the valve port assembly 21 and the control assembly 11, the three-point support being stable. And the position relationship of the two ends of one group of floating connecting devices 13 can be changed at any time, so that the angular position relationship of the ejector rod 12 relative to the valve port assembly 21, namely the angular position relationship of the ejector rod 12 relative to the valve membrane 22, can be changed. So as to allow for some non-parallelism between the axes of the control assembly 11 and the valve port assembly 21 prior to bonding. As shown in FIG. 2, where the valve port assembly axis A is located, the stem 12 may deviate from the stem deflection range B around the valve port assembly axis A, and by the above adjustment, the axis of the stem 12 may coincide or nearly coincide with the valve port assembly axis A. Once the floating connecting device 13 is installed and combined, the axis is automatically aligned to be parallel through different compression changes of the floating connecting device, and instability in the pressing process is avoided. In summary, the exhalation valve 100 can effectively solve the problem that the positional relationship between the ejector rod 12 of the split exhalation valve and the valve membrane 22 is poorly controlled.
In some embodiments, it is possible to have the floating connection 13 include a floating guide bar 13-1, a bushing 13-2 and a compression spring 13-3. Wherein the floating guide rod 13-1 and the bushing 13-2 are in threaded connection to form a bolt pair, namely, the floating guide rod 13-1 is provided with a screw head and a threaded section, and the bushing 13-2 is sleeved on the threaded section and in threaded fit with the threaded section so as to form the locking part. The compression elastic member 13-3 may be, for example, a compression spring (compression spring), a compression elastic body, or the like, as the elastic portion. Of course, the bushing 13-2 may be replaced by a pin member, and the floating guide rod 13-1 is uniformly provided with a plurality of pin holes matched with the pin member along the ejection direction of the ejector rod 12, so as to replace threaded connection. And wherein the compression spring 13-3 may be replaced with a tension spring.
In some embodiments, for ease of installation, the floating portion 14 and the fixing portion 15 may be correspondingly provided, wherein the floating portion 14 may be a floating rod, a floating plate, a floating block or other structural member, and wherein the fixing portion 15 may be a fixing block, a fixing rod, a fixing plate or other structural member.
The two ends of the compression elastic piece 13-3 are respectively propped against the floating part 14 and the fixed part 15, and the floating guide rod 13-1 is sequentially penetrated through the floating part 14, the compression elastic piece 13-3 and the fixed part 15 and then locked by the bushing 13-2, so that the bushing 13-2 can rotationally move on the floating guide rod 13-1 to change the interval between the floating part 14 and the fixed part 15. The bushing 13-2 may abut against a side of the fixing portion 15 away from the floating portion 14, or may be rotatably connected to the fixing portion 15 and relatively fixed in the ejection direction (axial direction of the floating guide rod 13-1) by a clamping groove. So as to rotate the bushing 13-2, so as to axially move on the floating guide 13-1, the bushing 13-2 pushes the fixing portion 15 to axially move relative to the floating portion 14 under the constraint of the screw head of the floating guide 13-1 to the floating portion 14, at this time, the compression elastic member 13-3 is further compressed, that is, the compression elastic member 13-3 constrains the distance between the fixing portion 15 and the floating portion 14, and the set of locking portions of the floating guide 13-1 and the bushing 13-2 can keep the compression elastic member 13-3 in a compressed state, so that the relative positional relationship between the fixing portion 15 and the floating portion 14 is stable, and the positional relationship between the two can be changed by the rotation of the bushing 13-2.
One of the control assembly 11 and the valve port assembly 21 is fixedly mounted to the floating portion 14 and the other is fixedly mounted to the fixed portion 15. Specifically, the control assembly 11 may be fixedly mounted to the floating portion 14, and the fixed portion 15 may be directly or indirectly mounted to the valve port assembly 21.
Specifically, an upper seat 30 and a lower seat 40 may be provided, and the upper seat 30 and the lower seat 40 may be fixedly connected with each other in a detachable manner, wherein the fixing portion 15 is fixedly mounted on the upper seat 30, and wherein the valve port assembly 21 is fixedly mounted on the lower seat 40.
In some embodiments, in order to facilitate the installation of the above structure, the fixing portion 15 may be a U-shaped plate surrounding the control assembly 11, wherein the U-shaped bottom and the openings at both ends of the U-shaped plate are respectively provided with a floating connection device 13, so as to better realize floating connection.
Of course, in some embodiments, the fixing portion 15 may be an annular fixing plate to be sleeved on the control assembly 11, and other structures are also possible.
In some embodiments, a window 23 is generally formed in the valve port assembly 21, and the valve membrane 22 is disposed in the window 23 so as to pass through the window 23, so that the valve membrane 22 is disposed in an exposed manner so as to be conveniently abutted against the ejector rod 12. The valve membrane 22 may be partially exposed at the window 23, or may be completely exposed at the window 23, where the peripheral edge of the valve membrane 22 is in sealing connection with the opening edge of the window 23. Such that the inner side of the valve membrane 22 is the inner cavity.
In some embodiments, the drive side of the valve port assembly 21 may be further provided with a cap-type positioning platen 16, wherein the stem 12 passes through the middle of the cap-type positioning platen 16 to be exposed at the drive side, and the rim of the cap-type positioning platen 16 abuts against the rim portion of the valve membrane 22, and may further abut against the rim of the window 23. A cavity is now formed between the valve diaphragm 22 and the cover-type positioning platen 16.
In some embodiments, the drive side may be provided with damping air holes 17 through into the interior cavity of the control assembly 11. In use, i.e. after the upper and lower parts have been joined. The cover-type positioning pressure plate 16 is contacted with the valve membrane 22 to form a gas chamber with certain tightness, and a damping air hole 17 with a specific size is formed at the top of the cover-type positioning pressure plate 16. When the exhalation valve 100 is actuated, the volume of the air chamber changes and the damper air hole 17 allows air to flow in and out. When the valve core has resonance trend, the change amplitude of the air cavity is increased, larger damping is generated, the vibration kinetic energy of the valve core is consumed, and the whole process is completed in a very short time, so that the occurrence of resonance and noise is inhibited. Meanwhile, the damping air hole 17 is communicated with the inside of the control assembly 11 (voice coil motor), and when the valve membrane 22 fluctuates, the air hole can disturb the air flow in the control assembly 11, so that the heat dissipation of the control assembly 11 is facilitated. Particularly for voice coil motors, overheating can lead to increased resistance in the control assembly 11, reduced current, reduced thrust, and excessive temperatures can lead to reduced magnetic steel magnetism.
In some embodiments, it is possible to make the control assembly 11a voice coil motor, in particular with a built-in annular magnet 18, said voice coil 19 being arranged in an annular air gap at said annular magnet 18.
In some embodiments, the valve port assembly 21 may be detachable from the floating connection 13 and may be detachable for cleaning. As described above with the upper and lower housings 30 and 40, the upper and lower housings 30 and 40 are detachable. Wherein the control assembly 11 and the floating connection 13 may be packaged as a single unit as a non-removable part 2010 without requiring cleaning.
And wherein the valve port assembly 21 acts as a removable portion 20 to allow for removable cleaning. Specifically, the valve port assembly 21 may be a valve port manifold assembly. The manifold, valve membrane 22, and other structures may be disassembled for ease of cleaning when applied.
In some embodiments, the valve port assembly 21 may be provided with an exhaust port 24, an automatic exhaust port 25, and a manual exhaust port 26, wherein the exhaust port 24 is configured to be coupled to an exhaust port fitting 50, and wherein the valve membrane 22 is configured to control automatic exhaust by adjusting the opening of the valve port 28 between the exhaust port 24 and the automatic exhaust port 25. And wherein the exhaust port 24 and the manual exhaust port 26 are provided therethrough. So that the manual exhaust and the automatic exhaust meet at the exhalation valve 100, and the passages merge and are discharged to the exhaust system from the same outlet. So as to facilitate connection and control exhaust.
In some embodiments, the middle of the valve membrane 22 may be provided with a membrane hard core 27, and the valve membrane 22 is fixed on the membrane hard core 27, wherein the hardness of the valve membrane 22 is lower than that of the membrane hard core 27, and the width of the membrane hard core 27 may be adapted to the valve port 28, and may be capable of pushing the valve membrane 22 like a pressing plate. In order to facilitate the force exerted by the carrier rod 12 on the valve membrane 22, it is preferred here that the middle part of the membrane hard core 27 has a spherical recess, and that the top end of the carrier rod 12 has a spherical protrusion which mates with the spherical recess.
Based on the exhalation valve 100 provided in the above embodiments, the present invention also provides an exhalation valve 100 system, which exhalation valve 100 system comprises any of the exhalation valves 100 of the above embodiments. Since the exhalation valve 100 system employs the exhalation valve 100 of the above embodiment, the advantageous effects of the exhalation valve 100 system are described with reference to the above embodiment.
In some embodiments, the exhalation valve 100 system may further include a breathing circuit 600, a manual-automatic switching valve 500, and a ventilation engine 200 for connecting a driving gas, and the air outlet of the ventilation engine 200 and the air inlet of the exhalation valve 100 may be connected to the breathing circuit 600 through the manual-automatic switching valve 500. Wherein when the manual-automatic switching valve 500 is switched to the automatic state, the air outlet of the ventilation engine 200 and the air inlet of the exhalation valve 100 are both communicated to the breathing circuit 600, and when the manual-automatic switching valve 500 is switched to the manual state, the inlet of the manual bellows 400 is communicated to the breathing circuit 600, and the outlet of the manual bellows 400 is communicated with the outlet of the exhalation valve 100 to be communicated to the exhaust gas discharge port together. So that the exhalation valve 100 is disposed downstream of the ventilation engine 200 and upstream of the manual-automatic switching valve 500, to the exhaust emission branch, and the manual exhaust joins downstream of the exhalation valve by the above-described arrangement.
In some embodiments, a gas isolation device 300 may be further provided, where one end port of the gas isolation device 300 communicates with the gas outlet of the ventilation engine 200 and the gas inlet of the exhalation valve 100 through a three-way structure, and the other end port communicates with a corresponding port of the manual-automatic switching valve 500.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The valve comprises a valve port assembly and a control assembly, wherein a valve diaphragm of the valve port assembly faces to a driving side of the control assembly, a push rod extending out of the driving side of the control assembly is abutted against the valve diaphragm to control the opening degree of the valve port by pushing the valve diaphragm, and the valve is characterized by further comprising at least three groups of floating connecting devices which are arranged around the push rod and can elastically float and adjust along the ejection direction of the push rod, and two ends of the floating connecting devices are respectively connected with the valve port assembly and the control assembly directly or indirectly;
The floating connecting device comprises a floating part and a fixed part, wherein the floating connecting device comprises a floating guide rod, a bushing and a compression elastic piece, the floating guide rod and the bushing are in threaded connection to form a bolt pair structure, two ends of the compression elastic piece are respectively propped against the floating part and the fixed part, the floating guide rod sequentially penetrates through the floating part, the compression elastic piece and the fixed part and then is locked through the bushing so as to rotationally move on the floating guide rod through the bushing to change the interval between the floating part and the fixed part, and the control assembly is fixedly arranged on the floating part, and the fixed part is directly or indirectly arranged on the valve port assembly;
The fixed part is a U-shaped plate which surrounds the control assembly, and the U-shaped bottom and the opening parts at the two ends of the U-shaped plate are respectively provided with the floating connecting device.
2. The exhalation valve of claim 1, wherein the valve port assembly has a window, the valve membrane is disposed in the window, a cover-type positioning pressure plate is disposed on a driving side of the valve port assembly, the ejector rod passes through a middle portion of the cover-type positioning pressure plate to be exposed on the driving side, and an edge of the cover-type positioning pressure plate abuts against an edge of the window and an edge portion of the valve membrane.
3. The exhalation valve of claim 2, wherein said drive side is provided with a damper vent extending into said control assembly interior cavity.
4. The exhalation valve of claim 2, wherein the control assembly is a voice coil motor having a built-in annular magnet, the voice coil being disposed in an annular air gap at the annular magnet.
5. The exhalation valve of claim 1, wherein the valve port assembly is detachable from the floating connection and is detachable for cleaning.
6. The exhalation valve of claim 1, wherein the valve port assembly is provided with an exhaust port, an automatic exhaust port, and a manual exhaust port, and the valve membrane is configured to adjust a valve port opening between the exhaust port and the automatic exhaust port, the exhaust port and the manual exhaust port being disposed therethrough.
7. The exhalation valve of claim 6, wherein a diaphragm hard core is provided in the middle of the valve diaphragm, a spherical groove is provided in the middle of the diaphragm hard core, and a spherical protrusion is provided on the top end of the ejector rod, which is matched with the spherical groove.
8. An exhalation valve system comprising a breathing circuit, a manual-automatic switching valve and a ventilation engine for connecting a driving gas, characterized in that it comprises an exhalation valve according to any of claims 1-7, the air outlet of the ventilation engine and the air inlet of the exhalation valve being connected to the breathing circuit via the manual-automatic switching valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210988011.XA CN115317755B (en) | 2022-08-17 | 2022-08-17 | Exhalation valve and exhalation valve system |
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| CN202210988011.XA CN115317755B (en) | 2022-08-17 | 2022-08-17 | Exhalation valve and exhalation valve system |
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| CN115317755A CN115317755A (en) | 2022-11-11 |
| CN115317755B true CN115317755B (en) | 2025-04-18 |
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| CN202210988011.XA Active CN115317755B (en) | 2022-08-17 | 2022-08-17 | Exhalation valve and exhalation valve system |
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| US9004097B2 (en) * | 2012-05-22 | 2015-04-14 | Nelson Irrigation Corporation | Pressure control valve with pressure cycling control |
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| CN104225756A (en) * | 2013-06-14 | 2014-12-24 | 北京谊安医疗系统股份有限公司 | Exhalation valve |
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| US5205539A (en) * | 1991-06-07 | 1993-04-27 | Georg Fischer Rohrleitungssysteme Ag | Diaphragm valve |
| CN105268077A (en) * | 2014-06-03 | 2016-01-27 | 侯夫辰 | Electromagnetic valve |
| CN113577473A (en) * | 2021-06-03 | 2021-11-02 | 深圳迈瑞动物医疗科技有限公司 | Breathing apparatus for human or animal use |
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| CN115317755A (en) | 2022-11-11 |
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