CN211835720U - Modularization exhalation valve and have its breathing machine - Google Patents
Modularization exhalation valve and have its breathing machine Download PDFInfo
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- CN211835720U CN211835720U CN201921998429.9U CN201921998429U CN211835720U CN 211835720 U CN211835720 U CN 211835720U CN 201921998429 U CN201921998429 U CN 201921998429U CN 211835720 U CN211835720 U CN 211835720U
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Abstract
The utility model provides a modularization exhalation valve and have its breathing machine. Wherein, modularization exhalation valve includes the exhalation valve disk seat, exhalation valve body subassembly and exhalation valve knob, exhalation valve body subassembly includes exhalation valve body, adopt and press the module, seal the valve module, and differential pressure flow sensor module, differential pressure flow sensor module detachably cartridge is in exhalation valve body is originally internal, exhalation valve body subassembly assembly holds in holding the chamber and the inlet end stretches out by the open end that holds the chamber, the exhalation valve knob is connected exhalation valve body and exhalation valve disk seat stably, adopt after the assembly is accomplished to press the communicating channel of switching silica gel piece and the metal of exhalation valve disk seat to adopt the briquetting to carry out the sampling channel and match and seal, carry out pressure sampling. Use this technical scheme to solve its structure complicacy of exhalation valve among the prior art, make it dismantle inconvenient and the higher problem of use cost of exhalation valve when disinfecting.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, especially, relate to a modularization exhalation valve and have its breathing machine.
Background
A ventilator is one of medical instruments commonly used in hospitals, and is essential for patients who need assisted breathing. The breathing machine belongs to the precise medical appliance category, so the manufacturing cost is relatively high, and therefore, the breathing in the hospital is circulated for multiple use. The high-end breathing machine on the breathing machine market has all realized the sterile function of dismantling of exhalation end at present, and this kind of high temperature disinfection function of dismantling is carrying out high temperature disinfection through dismantling out from the machine alone such as pipeline, the sensor that patient respiratory contamination has passed under the difficult condition of carrying out whole reliable disinfection to the breathing machine.
Its structure of traditional exhalation valve is complicated, so dismantle inconvenient when disinfecting, and because differential pressure flow sensor and exhalation valve body be fixed connection, both integrated into one piece can not be dismantled, so current differential pressure flow sensor in case damage just need replace differential pressure flow sensor and exhalation valve body together, this use cost who has increased the exhalation valve undoubtedly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a modularization exhalation valve and have its breathing machine is provided, it is complicated to aim at solving its structure of exhalation valve, makes its dismantlement inconvenient and the higher problem of use cost of exhalation valve when disinfecting.
In order to solve the technical problem, the utility model discloses a realize like this, a modularization exhalation valve, include: the exhalation valve seat is provided with an accommodating cavity, and the inner wall of the opening end of the accommodating cavity is provided with a first buckle; the exhalation valve body assembly comprises an exhalation valve body, a pressure collecting module, a valve sealing module and a differential pressure flow sensor module, wherein the exhalation valve body is provided with an air inlet end and an opening assembling end which are opposite to each other; one part of the exhaled gas entering the differential pressure flow sensor module from the air inlet end passes through the differential pressure flow sensor module to generate pressure difference and then enters the pressure production module, and the other part of the exhaled gas enters the ventilation space from the opening; the exhalation valve knob, the exhalation valve knob rotationally connects in the inlet end, and the exhalation valve knob is equipped with the second buckle, and when exhalation valve body assembly held in holding the chamber, first buckle formed the assembly of backstop in order to accomplish exhalation valve body with the second buckle.
Further, the valve sealing module comprises a voice coil motor and a valve sealing diaphragm, the valve sealing diaphragm is installed at the opening assembling end and is arranged opposite to the opening, the voice coil motor is installed on the exhalation valve seat, and the valve sealing diaphragm is pushed to seal the opening when a driving ejector rod of the voice coil motor extends out.
Furthermore, the outer wall of the differential pressure flow sensor module is provided with a guide convex rib, the inner wall of the exhalation valve body is provided with a guide sliding groove, and the guide convex rib is assembled in a sliding mode along the guide sliding groove.
Further, the pressure sampling module comprises a pressure sampling block, two pressure sampling channels and a differential pressure diaphragm, the two pressure sampling channels are respectively located on two sides of the differential pressure diaphragm, the pressure sampling transfer block (26) is provided with two communicating channels, the pressure sampling block is arranged on the outer wall of the valve body of the exhalation valve, the communicating channels are communicated with the pressure sampling channels, the pressure sampling block is arranged on the outer wall of the valve seat of the exhalation valve, when the valve body of the exhalation valve is assembled and contained in the containing cavity, the communicating channels are communicated with corresponding flow channels of the pressure sampling block to collect the pressure difference generated by the differential pressure flow sensor module.
Furthermore, a sealing groove is formed in the outer wall of the differential pressure flow sensor module, the sealing groove is located on two sides of the pressure production channel close to the end side of the opening assembly, a sealing rubber ring is installed in the sealing groove, and the sealing rubber ring is abutted with the inner wall of the exhalation valve body to form sealing.
Furthermore, the differential pressure flow sensor module also comprises a first assembly inner barrel and a second assembly inner barrel, wherein the corresponding ends of the first assembly inner barrel and the second assembly inner barrel are in butt joint, the periphery of the differential pressure diaphragm is clamped and pressed in a butt joint seam between the first assembly inner barrel and the second assembly inner barrel, the first assembly inner barrel is provided with one pressure sampling channel, and the second assembly inner barrel is provided with the other pressure sampling channel.
Further, be provided with the lug on the first buckle, be provided with the recess that matches with the lug on the second buckle.
Furthermore, the exhalation valve body is provided with an exhaust port, the exhaust port enables the ventilation space to be communicated with the external environment, and a one-way valve plate enabling gas to flow to the external environment from the ventilation space in a one-way mode is installed at the exhaust port.
According to the utility model discloses a further aspect provides a breathing machine, and it includes the core, and this breathing machine still includes aforementioned modularization exhalation valve, and wherein, exhalation valve disk seat fixed mounting is in the core.
Compared with the prior art, the utility model, beneficial effect lies in:
use this modularization exhalation valve to assemble or dismantle, through the modular design, can take out exhalation valve body for the exhalation valve disk seat on the whole, make the dismantlement mode or the equipment mode of exhalation valve obtain simplifying, thereby made things convenient for the dismantlement equipment process of exhalation valve, the disinfection process to exhalation valve has been made things convenient for greatly, can in time disinfection processing, in time change the processing, and differential pressure flow sensor module can be for the exhalation valve body and integrally dismantle taking out, when differential pressure flow sensor module damages the back, take out the differential pressure flow sensor module that damages from exhalation valve body, replace new differential pressure flow sensor module, need not to replace exhalation valve body and differential pressure flow sensor module together, greatly reduced the use cost of exhalation valve.
Drawings
Figure 1 is a first perspective view of a modular exhalation valve in accordance with an embodiment of the present invention;
figure 2 is a second perspective view of a modular exhalation valve in accordance with an embodiment of the present invention;
figure 3 is a front view of a modular exhalation valve of an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
figure 5 is an exploded view of a modular exhalation valve of an embodiment of the present invention;
fig. 6 is a split view of the exhalation valve body and the one-way valve sheet in the modular exhalation valve of the embodiment of the present invention;
fig. 7 is a cross-sectional view of a differential pressure flow sensor module and a sealing rubber ring in a modular exhalation valve according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a pressure tapping switching silica gel block in the modular exhalation valve of the present invention.
In the drawings, each reference numeral denotes:
10. an exhalation valve seat; 11. an accommodating chamber; 111. a first buckle; 20. an exhalation valve body assembly; 21. a exhalation valve body; 211. an air inlet end; 212. an open assembly end; 213. a differential pressure flow sensor module; 2131. A first fitting inner cylinder; 2132. a second fitting inner cylinder; 21321. a sealing groove; 21322. a guide convex rib; 2141. an exhaust port; 2142. a one-way valve plate; 2143. a guide chute; 215. a plenum space; 216. a pressure production channel; 217. sealing the rubber ring; 22. a voice coil motor; 23. a valve sealing diaphragm; 24. a differential pressure diaphragm; 25. adopting a pressing block; 26. a pressure collecting transfer block; 261. a communication channel; 30. an exhalation valve knob; 31. and a second buckle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
As shown in fig. 1-8, the present invention provides a modular exhalation valve. The modular exhalation valve comprises an exhalation valve seat 10, an exhalation valve body assembly 20 and an exhalation valve knob 30, wherein the exhalation valve body assembly 20 comprises an exhalation valve body 21, a pressure collecting module, a valve sealing module and a differential pressure flow sensor module 213. In this embodiment, the exhalation valve seat 10 is provided with a containing cavity 11, a first buckle 111, specifically three first buckles 111, is provided on an inner wall of an opening end of the containing cavity 11, the exhalation valve body 21 has an opposite air inlet end 211 and an opening assembling end 212, the exhalation valve body 21 is assembled and contained in the containing cavity 11, the air inlet end 211 extends out of the opening end of the containing cavity 11, the exhalation valve knob 30 is rotatably connected to the air inlet end 211, a second buckle 31 is provided on an outer wall of the exhalation valve knob 30, three second buckles 31 are provided opposite to the three first buckles 111, after the exhalation valve body 21 is assembled and contained in the containing cavity 11, the first buckle 111 and the second buckle 31 form a stop, so that the exhalation valve body 21 is installed. Specifically, in the present embodiment, the differential pressure flow sensor module 213 is detachably inserted into the exhalation valve body 21, the differential pressure flow sensor module 213 penetrates the air inlet end 211 and the opening assembling end 212, and a ventilation space 215 that can communicate with the external environment is formed between the differential pressure flow sensor module 213 and the exhalation valve body 21. The valve sealing module is arranged at the opening assembling end 212 and is used for opening or sealing the opening of the differential pressure flow sensor module 213 at the opening assembling end 212 side; wherein, a part of the exhaled gas entering the differential pressure flow sensor module 213 from the air inlet 211 passes through the differential pressure flow sensor module 213 to generate pressure difference and then enters the pressure production module, and the other part enters the ventilation space 215 from the opening.
Specifically, in this embodiment, the pressure sampling module includes a pressure sampling block 25 and a pressure sampling transfer block 26, and the differential pressure flow sensor module 213 includes two pressure sampling channels 216 and a differential pressure diaphragm 24, where the two pressure sampling channels 216 are located on two sides of the differential pressure diaphragm 24, respectively, the pressure sampling transfer block 26 is provided with two communication channels 261 (as shown in fig. 8), the pressure sampling block 25 is installed on the outer wall of the exhalation valve body 21, the pressure sampling block 25 is installed on the exhalation valve seat 10, when the exhalation valve body 21 is assembled and accommodated in the accommodation cavity 11, the communication channels 261 are communicated with corresponding flow channels of the pressure sampling block 25 (the pressure sampling block 25 is a metal pressure sampling block installed on the exhalation valve seat 10), and the two communication channels 261 communicate the two pressure sampling channels 216 one-to-one, so as to realize the pressure difference generated by the collected gas passing through the differential pressure flow sensor module 213.
In this embodiment, the valve sealing module includes a voice coil motor 22 and a valve sealing diaphragm 23, wherein the valve sealing diaphragm 23 is installed at the opening assembling end 212 and is disposed opposite to the opening of the differential pressure flow sensor module 213, the voice coil motor 22 is installed on the exhalation valve seat 10, and the driving ejector rod of the voice coil motor 22 pushes the valve sealing diaphragm 23 to seal the opening of the differential pressure flow sensor module 213 when extending out. In the process that the modularized exhalation valve is assembled and assembled in a breathing machine to work, the pressure of a valve sealing of the exhalation valve is controlled by the voice coil motor 22, a telescopic rod of the voice coil motor 22 is propped against the valve sealing diaphragm 23, the valve sealing forces with different sizes are obtained by controlling the current supplied to the voice coil motor 22, the force applied to the valve sealing diaphragm 23 by the voice coil motor 22 needs to be overcome when the exhalation gas passes through the differential pressure flow sensor module 213, the dynamic process obtains the required positive exhalation end pressure value, and at the moment, the gas flows to the pressure sampling block 25 through the pressure sampling switching block 26 to realize the pressure sampling detection of the gas at the front end and the rear end of the differential pressure diaphragm 24 in the differential pressure flow sensor module 213; exhaled gas passing through the differential pressure flow sensor module 213 can flow into the plenum 215 and continue to be exhausted to the ambient environment.
In the process of assembling the differential pressure flow sensor module 213 to the exhalation valve body 21, in order to achieve the purposes of rapid assembly and accurate assembly and positioning, the outer wall of the differential pressure flow sensor module 213 is further provided with a guide rib 21322, as shown in fig. 5, the inner wall of the exhalation valve body 21 is provided with a guide chute 2143, as shown in fig. 6, and in the assembly process, the guide rib 21322 is assembled in a sliding manner along the guide chute 2143.
Furthermore, in order to ensure that the ventilation space 215 cannot communicate with the air inlet 211, a sealing groove 21321 is provided on the outer wall of the differential pressure flow sensor module 213 of this embodiment, the sealing groove 21321 is located on both sides of the pressure generating channel 216 near the opening assembling end 212, a sealing rubber ring 217 is installed in the sealing groove 21321, and the sealing rubber ring 217 abuts against the inner wall of the exhalation valve body 21 to form a seal.
As shown in fig. 7, the differential pressure flow sensor module 213 includes a first inner fitting cylinder 2131, a second inner fitting cylinder 2132, and a differential pressure diaphragm 24, wherein the differential pressure diaphragm 24 is an integral diaphragm, and an intermediate movable diaphragm portion (not shown) and a circumferential fixed diaphragm portion (not shown) are formed in the differential pressure diaphragm 24 by cutting an arc-shaped slit that is not a full circle, and when gas flows, the movable diaphragm portion is pushed open by gas pressure under the action of gas flow pressure, and the gas passes through the arc-shaped slit. The first assembling inner cylinder 2131 is butted with the corresponding end of the second assembling inner cylinder 2132, the periphery (namely, the fixed diaphragm part) of the differential pressure diaphragm 24 is clamped and pressed in a butt joint seam between the first assembling inner cylinder 2131 and the second assembling inner cylinder 2132, the first assembling inner cylinder 2131 is provided with a pressure sampling channel 216, and the second assembling inner cylinder 2132 is provided with a pressure sampling channel 216. When gas flows through the arc-shaped cutting seam, the pressure collecting channels 216 on two sides of the differential pressure membrane 24 simultaneously collect pressure of air in the differential pressure flow sensor module, so that the pressure of the positions on two sides of the differential pressure membrane 24 in the differential pressure flow sensor module is detected, the characteristics of the expiration process of a patient are acquired, the breathing condition of the patient is observed, and the treatment scheme is favorably and correctly formulated.
When the differential pressure flow sensor module is disassembled, the differential pressure diaphragm 24 is disassembled by taking out the differential pressure flow sensor module as a whole with respect to the exhalation valve body 21 and then disassembling the first and second assembling inner cylinders 2131 and 2132. Specifically, the first assembly inner cylinder 2131 is provided with a pressure sampling channel 216, and the second assembly inner cylinder 2132 is provided with a pressure sampling channel 216.
Preferably, in the present embodiment, the differential pressure diaphragm 24 is a metal diaphragm. Because metal diaphragm can appear warping, fracture, damaged the condition that can not normally work after permanent use, because the utility model discloses a differential pressure diaphragm 24 can be conveniently dismantled to can change the differential pressure diaphragm 24 of unable normal work, for the design of the unable this metal diaphragm of changing alone of prior art, the utility model provides a modularization exhalation valve can realize lower cost maintenance process, prolongs the life of exhalation valve.
In the present embodiment, the exhalation valve knob 30 is used for quick assembly, and specifically, a projection is provided on each first latch 111, and a groove matched with the projection on the first latch 111 is provided on each second latch 31. The modularized exhalation valve designed by the embodiment is connected with the exhalation valve knob 30 through the exhalation valve body 21, the exhalation valve knob 30 can be rotated forward or reversely, the exhalation valve body 21 is prevented from sliding along the axis direction of the exhalation valve seat 10 and being separated from the exhalation valve seat 10 by forming a stop matching between the second buckle 31 and the first buckle 111 through rotating the exhalation valve knob 30 forward, conversely, the exhalation valve body 21 is separated from the first buckle 111 through rotating the exhalation valve knob 30 reversely, and at this time, the exhalation valve body 21 can be separated from the exhalation valve seat 10 and taken out integrally. Further, by designing the differential pressure flow sensor module 213 to be detachably inserted into the exhalation valve body 21, it is also possible to completely remove the differential pressure flow sensor module 213 integrally with the exhalation valve body 21 after the exhalation valve body 21 is removed integrally. Further, this embodiment is owing to design adopts pressure to change to connect piece 26 and adopts briquetting 25, assembling exhalation valve body 21 to the in-process that holds chamber 11, adopts pressure to change to connect piece 26 and adopts briquetting 25 and can realize automatic connection and make intercommunication passageway 261 intercommunication adopt briquetting 25, in this embodiment, adopts pressure to change to connect piece 26 and adopts the silica gel material to make, because adopt pressure to change to connect piece 26 and have certain elastic deformation ability, therefore realize sealed avoiding gas leakage simultaneously with adopting the in-process of briquetting 25 automatic connection. Like this, the modularization exhalation valve that this embodiment designed makes the dismantlement mode or the equipment mode of exhalation valve obtain simplifying to make things convenient for the dismantlement equipment process of exhalation valve, made things convenient for the disinfection process to the exhalation valve greatly, can in time disinfection, in time change the processing.
The utility model discloses a theory of operation: when the patient exhales, the valve sealing module opens the opening of the differential pressure flow sensor module 213 on the side of the opening fitting end 212; the gas exhaled by the patient enters the differential pressure flow sensor module 213 from the gas inlet end 211, wherein a part of the exhaled gas entering the differential pressure flow sensor module 213 from the gas inlet end 211 passes through the differential pressure diaphragm 24 of the differential pressure flow sensor module 213 to generate pressure difference, the pressure difference is collected by the pressure collection module, then the signal conversion is carried out to obtain the gas flow exhaled by the patient, the other part of the exhaled gas enters the ventilation space 215 from the opening to the external environment, and when the patient inhales, the valve sealing module seals the opening.
As shown in fig. 1, 5 and 6, the exhalation valve body 21 is provided with an exhaust port 2141, the exhaust port 2141 connects the ventilation space 215 to the external environment, and a check valve sheet 2142 for allowing gas to flow from the ventilation space 215 to the external environment in a single direction is installed at the exhaust port 2141. When the gas exhaled by the patient flows into the ventilation space 215, and the air pressure in the ventilation space 215 is positive pressure relative to the air pressure of the external environment, the one-way valve sheet 2142 is opened under the action of the positive pressure, and the gas flows out of the exhaust port 2141, and is then discharged to the external environment after the subsequent disinfection and sterilization treatment; when the air pressure in the ventilation space 215 is negative relative to the air pressure in the external environment, the check valve plate 2142 presses the air pressure in the external environment against the exhaust port 2141 to block the exhaust port 2141.
After installing into holding chamber 11 with exhalation valve body 21 and the corresponding part of connecting on it wholly, the certain angle setting is personally submitted for the horizontal plane to the flow channel inner wall of exhalation valve body 21, so, the condensation ponding that patient's exhalation gas was come under the condensation in-process of flowing can be smoothly flowed by the open end of exhalation valve body 21, is convenient for discharge condensation ponding.
According to another aspect of the present invention, there is provided a ventilator. In the utility model provides a respirator, this respirator includes casing (not shown) and the aforesaid modularization exhalation valve, wherein, exhalation valve disk seat 10 fixed mounting is in the casing. Through the modular design, can take out exhalation valve body 21 for exhalation valve disk seat 10 on the whole for the dismantlement mode or the equipment mode of exhalation valve obtain simplifying, thereby made things convenient for the dismantlement equipment process of exhalation valve, made things convenient for the disinfection process to the exhalation valve greatly, can in time disinfection, in time change the processing.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A modular exhalation valve, comprising:
the exhalation valve comprises an exhalation valve seat (10), wherein the exhalation valve seat (10) is provided with an accommodating cavity (11), and the inner wall of the opening end of the accommodating cavity (11) is provided with a first buckle (111);
the exhalation valve body assembly (20), the exhalation valve body assembly (20) includes an exhalation valve body (21), a pressure collecting module, a valve sealing module and a differential pressure flow sensor module (213), the exhalation valve body (21) has an air inlet end (211) and an opening assembling end (212) which are opposite, the exhalation valve body (21) is assembled and accommodated in the accommodating cavity (11), the air inlet end (211) extends out from the opening end of the accommodating cavity (11), the differential pressure flow sensor module (213) is detachably inserted in the exhalation valve body (21), the differential pressure flow sensor module (213) penetrates through the air inlet end (211) and the opening assembling end (212), a ventilation space (215) which can be communicated with the external environment is formed between the differential pressure flow sensor module (213) and the exhalation valve body (21), the valve sealing module is arranged at the opening assembling end (212) and is used for opening or sealing the opening of the differential pressure flow sensor module (213) at the side of the opening assembling end (212); wherein, one part of the exhaled gas entering the differential pressure flow sensor module (213) from the air inlet end (211) enters the pressure production module after generating pressure difference through the differential pressure flow sensor module (213), and the other part of the exhaled gas enters the ventilation space (215) through the opening;
exhalation valve knob (30), exhalation valve knob (30) rotationally connect in inlet end (211), exhalation valve knob (30) are equipped with second buckle (31), exhalation valve body (21) assembly hold in when holding chamber (11), first buckle (111) with second buckle (31) form the backstop in order to accomplish the assembly of exhalation valve body (21).
2. The modular exhalation valve of claim 1, wherein the valve sealing module comprises a voice coil motor (22) and a valve sealing diaphragm (23), the valve sealing diaphragm (23) is mounted at the opening mounting end (212) and is arranged opposite to the opening of the differential pressure flow sensor module (213), the voice coil motor (22) is mounted on the exhalation valve seat (10), and a driving ejector rod of the voice coil motor (22) pushes the valve sealing diaphragm (23) to seal the opening of the differential pressure flow sensor module (213) when extending out.
3. The modular exhalation valve according to claim 1, wherein a guide rib (21322) is provided on an outer wall of the differential pressure flow sensor module (213), a guide chute (2143) is provided on an inner wall of the exhalation valve body (21), and the guide rib (21322) is slidably assembled along the guide chute (2143).
4. The modular exhalation valve of claim 1, wherein the pressure production module includes a production block (25) and a production transition block (26), the differential pressure flow sensor module (213) comprises two pressure production channels (216) and a differential pressure diaphragm (24), the two pressure production channels (216) are respectively positioned at two sides of the differential pressure diaphragm (24), the pressure sampling switching block (26) is provided with two communicating channels (261), the pressure sampling block (25) is arranged on the outer wall of the exhalation valve body (21), the communicating channel (261) is communicated with a pressure sampling channel (216), the pressure sampling block (25) is arranged on the outer wall of the exhalation valve seat (10), when the exhalation valve body (21) is assembled and accommodated in the accommodating cavity (11), the communication channel (261) communicates with a corresponding flow channel of the pressure production block (25) to collect a pressure differential generated by the differential pressure flow sensor module (213).
5. The modular exhalation valve of claim 4, characterized in that, a sealing groove (21321) is provided on the outer wall of the differential pressure flow sensor module (213), the sealing groove (21321) is located at two sides of the pressure production channel (216) near the opening assembling end (212), a sealing rubber ring (217) is installed in the sealing groove (21321), and the sealing rubber ring (217) abuts against the inner wall of the exhalation valve body (21) to form a seal.
6. The modular exhalation valve according to claim 4, wherein the differential pressure flow sensor module (213) further comprises a first fitting inner cylinder (2131) and a second fitting inner cylinder (2132), the first fitting inner cylinder (2131) is abutted with the corresponding end of the second fitting inner cylinder (2132), the periphery of the differential pressure diaphragm (24) is clamped and pressed in the butt joint seam between the first fitting inner cylinder (2131) and the second fitting inner cylinder (2132), the first fitting inner cylinder (2131) is provided with one pressure generating channel (216), and the second fitting inner cylinder (2132) is provided with another pressure generating channel (216).
7. The modular exhalation valve of claim 1, wherein the first catch (111) is provided with a projection and the second catch (31) is provided with a groove that mates with the projection.
8. The modular exhalation valve according to any one of claims 1 to 7, wherein the exhalation valve body (21) is provided with an exhaust port (2141), the exhaust port (2141) connects the ventilation space (215) to the external environment, and a check valve piece (2142) is installed at the exhaust port (2141) to allow gas to flow from the ventilation space (215) to the external environment in a single direction.
9. A respirator comprising a movement, characterized in that it further comprises a modular exhalation valve of any one of claims 1 to 8, wherein an exhalation valve seat (10) is fixedly mounted in the movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921998429.9U CN211835720U (en) | 2019-11-18 | 2019-11-18 | Modularization exhalation valve and have its breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921998429.9U CN211835720U (en) | 2019-11-18 | 2019-11-18 | Modularization exhalation valve and have its breathing machine |
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| Publication Number | Publication Date |
|---|---|
| CN211835720U true CN211835720U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921998429.9U Active CN211835720U (en) | 2019-11-18 | 2019-11-18 | Modularization exhalation valve and have its breathing machine |
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| CN (1) | CN211835720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289194A (en) * | 2021-06-30 | 2021-08-24 | 深圳市普博医疗科技股份有限公司 | Expiratory valve and breathing machine |
-
2019
- 2019-11-18 CN CN201921998429.9U patent/CN211835720U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289194A (en) * | 2021-06-30 | 2021-08-24 | 深圳市普博医疗科技股份有限公司 | Expiratory valve and breathing machine |
| CN113289194B (en) * | 2021-06-30 | 2022-12-09 | 深圳市普博医疗科技股份有限公司 | Expiratory valve and breathing machine |
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