CN103055401B - Respirator and proportioning valve - Google Patents
Respirator and proportioning valve Download PDFInfo
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- CN103055401B CN103055401B CN201110319084.1A CN201110319084A CN103055401B CN 103055401 B CN103055401 B CN 103055401B CN 201110319084 A CN201110319084 A CN 201110319084A CN 103055401 B CN103055401 B CN 103055401B
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- proportioning valve
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Abstract
The invention provides respirator and proportioning valve.Proportioning valve, comprising: housing, and housing comprises cavity; Valve seat, valve seat is provided with import, outlet and valve port; Housing is connected with valve base sealing; Import is communicated with valve port; Coil, the first soft magnet, armature, the first flexible member and seal cover board is provided with in housing; Coil is arranged around the periphery of the first soft magnet, first soft magnet is arranged on the first side of the axis of armature, seal cover board is connected with the second side of the axis of armature, second side of armature is provided with the first flexible member, and the first soft magnet drives armature with the end contact on the surface with valve port that make seal cover board or is separated.The present invention controls folding between seal cover board and the end face of valve port to realize the flow-control of comparative example valve by electromagnetic mode, therefore, there is not sealing ring problem of aging when using sealing ring sealing, have that good sealing effect, response speed are high, the low height of cost, feature easy to maintenance, and reduce hysteresis.
Description
Technical field
The present invention relates to valve field, more specifically, relate to a kind of respirator and proportioning valve.
Background technology
Respirator is a kind of assisted ventilation unit, and suction nozzle and exhaust tube are connected to patient end by it simultaneously, and patient from the suction nozzle draw gas of respirator, then passes through exhaust tube Exhaust Gas.In the use procedure of respirator, must carry out mechanical ventilation to patient, respirator can carry compressor or requirement provides the source of the gas being no less than 4bar pressure, and the valve namely needing can carry out the control of high-pressure high-flow ratio carries out the control of ventilation.For meeting subject patient, the size of ventilation controls to be very important (particularly infant patient and Cavity in Critical Patients), therefore, need accurately control the flow of respirator and require to have the response speed of rapid sensitive.Correspondingly, necessarily require flow valve to have good sealing under air flue safe pressure, and can open quickly and accurately when different pressures.But the proportioning valve that respirator of the prior art uses has that sealing effectiveness is bad, hysteresis is serious, response speed is not high, cost is high, the problem of inconvenient maintenance, poor universality.
Summary of the invention
The present invention aims to provide a kind of respirator and proportioning valve, and, hysteresis bad with the sealing effectiveness of the proportioning valve solving prior art is serious, response speed is not high, cost is high, the problem of inconvenient maintenance, poor universality.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide a kind of proportioning valve, comprising: housing, housing comprises cavity; Valve seat, valve seat is provided with import, outlet and valve port; Housing is connected with valve base sealing; Import is communicated with valve port; Coil, the first soft magnet, armature, the first flexible member and seal cover board is provided with in housing; Coil is arranged around the periphery of the first soft magnet, first soft magnet is arranged on the first side of the axis of armature, seal cover board is connected with the second side of the axis of armature, second side of armature is provided with the first flexible member, and the first soft magnet drives armature with the end contact on the surface with valve port that make seal cover board or is separated.
Further, proportioning valve also comprises pressure-regulating device, and the first soft magnet comprises through hole, and pressure-regulating device is arranged in the through hole of the first soft magnet, and pressure-regulating device abuts with the first side of armature.
Further, pressure-regulating device comprises the second flexible member, and pressure-regulating device also comprises the adjusting screw(rod) and float mandrels that are separately positioned on the second flexible member two ends, and one end of float mandrels abuts with the first side of armature.
Further, proportioning valve also comprises the second soft magnet, is provided with magnetism-isolating loop between the first soft magnet and the second soft magnet, and the first soft magnet and the second soft magnet are respectively used to produce the contrary magnetic field of magnetic.
Further, the second soft magnet has through hole, armature be arranged in the through hole of the second soft magnet at least partially actively.
Further, housing comprises the first housing and the second housing, and the first housing and the second housing are threaded connection, the end abutment of the second soft magnet and the second housing.
Further, the middle part of the second housing is provided with the dividing plate with through hole, and proportioning valve also comprises the seal dissepiment between armature and seal cover board, and seal dissepiment is slidably arranged in the through hole of dividing plate.
Further, proportioning valve also comprises Connection Block, and seal cover board is connected with the second side of armature by Connection Block.
Further, proportioning valve also comprises connecting rod, and the two ends of connecting rod are respectively arranged with screw thread, and the middle part of connecting rod is provided with boss, and one end of connecting rod is connected with Connection Block through seal dissepiment, and the other end of connecting rod is connected with seal cover board.
Further, the first flexible member is spring.
Further, be provided with sealing inner core in the valve port of valve seat, the surface of seal cover board is with the end contact of sealing inner core or be separated, and seal cover board is all metal with sealing inner core.
According to another aspect of the present invention, provide a kind of respirator, it comprises proportioning valve, and this proportioning valve is above-mentioned proportioning valve.
The present invention controls folding between seal cover board and the end face of valve port to realize the flow-control of comparative example valve by electromagnetic mode, therefore, there is not sealing ring problem of aging when using sealing ring sealing, have that good sealing effect, response speed are high, the low height of cost, feature easy to maintenance, and reduce hysteresis.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As one aspect of the present invention, the invention provides a kind of proportioning valve.As shown in Figure 1, the proportioning valve in the present invention comprises housing 1, and housing 1 comprises cavity; Valve seat 2, valve seat 2 is provided with import 21, outlet 22 and valve port 23; Housing 1 and valve seat 2 are tightly connected; Import 21 is communicated with valve port 23; Coil 3, first soft magnet 4, armature 5, first flexible member 6 and seal cover board 7 is provided with in housing 1; Coil 3 is arranged around the periphery of the first soft magnet 4, first soft magnet 4 is arranged on the first side of the axis of armature 5, seal cover board 7 is connected with the second side of the axis of armature 5, being provided with the first flexible member 6, first soft magnet 4 in the second side of armature 5 drives armature 5 to make the end contact of the surface of seal cover board 7 and valve port 23 or to be separated.During work, certain DC current (or voltage) can be applied to coil 3, magnetic field is produced to make coil 3, the first soft magnet 4 being placed in coil 3 magnetizes to form DC electromagnet by this magnetic field immediately, air-gap is provided with between first soft magnet 4 and armature 5, therefore, after the first soft magnet 4 magnetizes, first soft magnet 4 just attracts armature 5 to move to the direction of the first soft magnet 4, thus drive seal cover board 7 to move together thereupon, so seal cover board 7 is separated with valve port 23 to make the proportioning valve in the present invention be in open mode, now, fluid (as gas or liquid) from import 21 is output by valve port 23 and outlet 22 successively.Further, along with the increase gradually of DC current being supplied to coil, the intensity in the magnetic field that the first flexible member 6 produces also increases step by step, correspondingly, the electromagnetic attraction produced also increases gradually, and by the effect of this electromagnetic attraction, armature 5 drives seal cover board 7 and the first flexible member 6 of being connected with seal cover board 7 moves to the direction of the first soft magnet 4, specifically, the displacement of seal cover board 7 is directly proportional to the size of the electric current (or voltage) being supplied to coil 3.Like this, because the displacement of the unlatching of seal cover board 7 is directly proportional to the flow of fluid, thus the linear change of electric current (or voltage) and flow is just achieved, especially, when the first soft magnet 4 reaches capacity magnetic field intensity, even if high current (or voltage), flow also no longer increases.Further, when electric current (or voltage) descending change time, the electromagnetic attraction that armature 5 produces reduces, therefore, under the synergy of the first flexible member 6, seal cover board 7 falls after rise to the direction of lower valve port 23, until seal cover board 7 and valve port 23 are fitted completely, thus is disconnected by proportioning valve.Especially, (especially, applying this predetermined pressure by the first flexible member 6) when applying predetermined pressure to seal cover board 7, the leakage rate of the fluid in the present invention can reach zero.Proportioning valve in the present invention flow adjustment whole process in, flow and electric current (or voltage) linear.Because the present invention is realized by the folding between seal cover board 7 and the end face of valve port 23, especially, what form therebetween is metal sealing (namely the two all adopts metal to make), therefore, there is not sealing ring problem of aging when using sealing ring sealing, extend sealing life of the present invention; Further, itself there is not Elastic penetration in seal cover board, therefore, can obtain and respond fast; In addition, mutual friction condition is there is not between the end face of seal cover board 7 and valve port 23 yet, thus hysteresis is substantially reduced, higher frequency can be obtained, correspondingly also extend service life further (especially, its fast response time < 35 milliseconds, access times can more than 200,000,000 times).Preferably, the valve port 23 of valve seat 2 is provided with sealing inner core 103, the surface of seal cover board 7 is with the end contact of sealing inner core 103 or be separated.As shown in Figure 1, the part of the proportioning valve in the present invention is few, neither be high to the requirement of machining accuracy, therefore, has that Mechanical Reliability is high, the feature of processing and manufacturing cost, is also convenient to carry out quickly and easily keeping in repair and safeguarding; Further, the present invention adopts modularized design, and therefore, the actuator of proportioning valve can use as a general part, and only need change valve body just can form a series of proportioning valve, and the field of its application is also very wide.In addition, this proportioning valve relies on electromagnetic attraction to be realized the switch of valve by lift-off seal cover plate, and this design makes proportioning valve in working pressure range, have very little leakage rate.
Preferably, preferably, the first flexible member 6 is spring (particularly leaf springs, especially, this leaf spring is flexible).Especially, leaf spring has two panels, armature can be suspended between the leaf spring of two panels flexibility, therefore, eliminate parts that armature is adjacent (especially, the parts that armature is adjacent all are made of metal) contact and mechanical friction, thus extend service life, and reduce hysteresis.In addition, this underslung armature structure makes armature can be made little as far as possible and light as far as possible, and therefore, relative to plunger armature structure of the prior art, the armature structure in the present invention has the high frequency response performance having competitiveness.In addition, owing to there is no mechanical friction, proportioning valve in the present invention can directly with DC power supply (can direct DC or PWM power), and do not need other electronic component, further, use the Switching Power Supply of PWM greatly can reduce hysteresis, and make hysteresis be reduced to 1%.
Preferably, proportioning valve also comprises pressure-regulating device 8, and the first soft magnet 4 comprises through hole, and pressure-regulating device 8 is arranged in the through hole of the first soft magnet 4, and pressure-regulating device 8 abuts with the first side of armature 5.Therefore, a restoring force can be applied to armature 5 by pressure-regulating device 8, when proportioning valve is in closed condition, pressure-regulating device 8 and the first flexible member 6 apply the active force to valve port 23 to armature 5 simultaneously, under the effect of this active force, seal cover board 7 reliably and closely covers on valve port 23, thus can play better sealing effectiveness.In addition, in some cases (such as debug process or life-time service and when making the impaired performance of the first flexible member 6 and/or pressure-regulating device 8), the size of above-mentioned active force can be regulated, with the value making this active force reach predetermined by pressure-regulating device 8.Preferably, pressure-regulating device 8 comprises the second flexible member 82, and pressure-regulating device 8 also comprises the adjusting screw(rod) 81 and float mandrels 83 that are separately positioned on the second flexible member 82 two ends, and one end of float mandrels 83 abuts with the first side of armature 5.The mode that adjusting screw(rod) 81 is threaded connection is arranged in the through hole of the first soft magnet 4, when needed, by spanner turn adjusting screw(rod) 81, thus realizes easily regulating.
Preferably, proportioning valve also comprises between the second soft magnet 9, first soft magnet 4 and the second soft magnet 9 and is provided with magnetism-isolating loop 10, and the first soft magnet 4 and the second soft magnet 9 are respectively used to produce the contrary magnetic field of magnetic.Adopt the second soft magnet 9 can make armature 5 in the process fallen after rise to valve port 23, more easily operate.Two magnetic fields that adopt magnetism-isolating loop 10 to block direction that the first soft magnet 4 and the second soft magnet 9 produce is contrary, make the two be independent of each other.Preferably, the second soft magnet 9 has through hole, being arranged on actively at least partially in the through hole of the second soft magnet 9 of armature 5.
Preferably, housing 1 comprises the first housing 11 and the second housing 12, first housing 11 and the second housing 12 and is threaded connection, the end abutment of the second soft magnet 9 and the second housing 12.Preferably, the middle part of the second housing 12 is provided with the dividing plate 121 with through hole, and proportioning valve also comprises the seal dissepiment 100 between armature 5 and seal cover board 7, and seal dissepiment 100 is slidably arranged in the through hole of dividing plate 121.Therefore, when armature 5 moves, seal dissepiment 100 also moves thereupon together, thus formative dynamics sealing on dividing plate 121 in the middle part of the second housing 12, affect the normal work of actuation element (comprising coil 3, first soft magnet 4, armature 5, first flexible member 6 etc.) in the cavity preventing the fluid in valve seat 2 from entering housing 1.Owing to there being seal dissepiment 100 working media, import and export path and actuation element to be completely cut off, therefore, the proportioning valve in the present invention may be used for gas and liquid.Preferably, at the second housing 12, the junction of valve seat 2 is provided with sealing ring 104.
Preferably, proportioning valve also comprises Connection Block 101, and seal cover board 7 is connected with the second side of armature 5 by Connection Block 101.Preferably, proportioning valve also comprises connecting rod 102, and the two ends of connecting rod 102 are respectively arranged with screw thread, and the middle part of connecting rod 102 is provided with boss, one end of connecting rod 102 is connected with Connection Block 101 through seal dissepiment 100, and the other end of connecting rod 102 is connected with seal cover board 7.Like this, seal dissepiment 100 has just been stuck between Connection Block 101 and this boss, thus, can move with armature 5.
As another aspect of the present invention, the invention provides a kind of respirator (particularly electric electricing breathing machine or therapeutic type respirator), it comprises proportioning valve, and this proportioning valve is the proportioning valve in the various embodiments described above.Adopt the proportioning valve in the present invention and coordinate gas supply system just to measure by micro computer, and carrying out control ratio valve to obtain accurate flow through computing, feedback.Preferably, the automatically controlled part of respirator by micro computer adjustments of gas flow velocity and airway pressure, to realize different breathing patterns.
The present invention controls folding between seal cover board and the end face of valve port to realize the flow-control of comparative example valve by electromagnetic mode, therefore, there is not sealing ring problem of aging when using sealing ring sealing, have that good sealing effect, response speed are high, the low height of cost, feature easy to maintenance, and reduce hysteresis.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a proportioning valve, comprising:
Housing (1), described housing (1) comprises cavity;
Valve seat (2), described valve seat (2) is provided with import (21), outlet (22) and valve port (23); Described housing (1) and described valve seat (2) are tightly connected; Described import (21) is communicated with described valve port (23);
It is characterized in that, in described housing (1), be provided with coil (3), the first soft magnet (4), armature (5), the first flexible member (6) and seal cover board (7);
Described coil (3) is arranged around the periphery of described first soft magnet (4), described first soft magnet (4) is arranged on the first side of the axis of described armature (5), described seal cover board (7) is connected with the second side of the axis of described armature (5), described second side of described armature (5) is provided with described first flexible member (6), and described first soft magnet (4) drives described armature (5) to make the end contact of the surface of described seal cover board (7) and described valve port (23) or to be separated.
2. proportioning valve according to claim 1, it is characterized in that, described proportioning valve also comprises pressure-regulating device (8), described first soft magnet (4) comprises through hole, described pressure-regulating device (8) is arranged in the described through hole of described first soft magnet (4), and described pressure-regulating device (8) abuts with the first side of described armature (5).
3. proportioning valve according to claim 2, it is characterized in that, described pressure-regulating device (8) comprises the second flexible member (82), described pressure-regulating device (8) also comprises the adjusting screw(rod) (81) and float mandrels (83) that are separately positioned on described second flexible member (82) two ends, and one end of described float mandrels (83) abuts with the first side of described armature (5).
4. proportioning valve according to claim 1, it is characterized in that, described proportioning valve also comprises the second soft magnet (9), be provided with magnetism-isolating loop (10) between described first soft magnet (4) and the second soft magnet (9), described first soft magnet (4) and the second soft magnet (9) are respectively used to produce the contrary magnetic field of magnetic.
5. proportioning valve according to claim 4, is characterized in that, described second soft magnet (9) has through hole, being arranged on actively at least partially in the described through hole of described second soft magnet (9) of described armature (5).
6. proportioning valve according to claim 4, it is characterized in that, described housing (1) comprises the first housing (11) and the second housing (12), described first housing (11) and the second housing (12) are threaded connection, the end abutment of described second soft magnet (9) and described second housing (12).
7. proportioning valve according to claim 6, it is characterized in that, the middle part of described second housing (12) is provided with the dividing plate (121) with through hole, described proportioning valve also comprises the seal dissepiment (100) be positioned between described armature (5) and seal cover board (7), and described seal dissepiment (100) is slidably arranged in the described through hole of described dividing plate (121).
8. proportioning valve according to claim 7, it is characterized in that, described proportioning valve also comprises Connection Block (101), and described seal cover board (7) is connected by second side of described Connection Block (101) with described armature (5).
9. proportioning valve according to claim 8, it is characterized in that, described proportioning valve also comprises connecting rod (102), the two ends of described connecting rod (102) are respectively arranged with screw thread, the middle part of described connecting rod (102) is provided with boss, one end of described connecting rod (102) is connected with described Connection Block (101) through described seal dissepiment (100), and the other end of described connecting rod (102) is connected with described seal cover board (7).
10. the proportioning valve according to any one of claim 1-9, is characterized in that, described first flexible member (6) is spring.
11. proportioning valves according to any one of claim 1-9, it is characterized in that, sealing inner core (103) is provided with in the valve port (23) of described valve seat (2), the surface of described seal cover board (7) is with the end contact of described sealing inner core (103) or be separated, and described seal cover board (7) and described sealing inner core (103) are all metal.
12. 1 kinds of respirators, it comprises proportioning valve, it is characterized in that, described proportioning valve is the proportioning valve according to any one of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319084.1A CN103055401B (en) | 2011-10-19 | 2011-10-19 | Respirator and proportioning valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319084.1A CN103055401B (en) | 2011-10-19 | 2011-10-19 | Respirator and proportioning valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103055401A CN103055401A (en) | 2013-04-24 |
| CN103055401B true CN103055401B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110319084.1A Active CN103055401B (en) | 2011-10-19 | 2011-10-19 | Respirator and proportioning valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN103055401B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879541B (en) * | 2014-02-28 | 2018-11-13 | 北京谊安医疗系统股份有限公司 | Proportioning valve |
| CN105268077B (en) * | 2014-06-03 | 2018-03-20 | 侯夫辰 | Magnetic valve |
| WO2015200878A1 (en) * | 2014-06-27 | 2015-12-30 | Carefusion 303, Inc. | Ventilator flow valve |
| CN204832963U (en) * | 2015-07-06 | 2015-12-02 | 北京谊安医疗系统股份有限公司 | Concentric device of automatic counter shaft of ejector pin |
| CN105498066B (en) * | 2016-01-13 | 2017-09-12 | 深圳市诺然美泰科技股份有限公司 | Low pressure and mass flow ratio controls quick response device and its fast-response control valve |
| CN211082858U (en) * | 2019-11-19 | 2020-07-24 | 深圳市科曼医疗设备有限公司 | Proportional valve and breathing machine |
| CN113251199B (en) * | 2021-07-02 | 2021-09-24 | 星宇电子(宁波)有限公司 | Proportion control method of double-disc-spring type precise proportional valve for respirator |
| CN114209938B (en) * | 2021-11-23 | 2023-11-10 | 北京谊安医疗系统股份有限公司 | Pressure control method and control system for breathing machine |
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| US5771884A (en) * | 1997-03-14 | 1998-06-30 | Nellcor Puritan Bennett Incorporated | Magnetic exhalation valve with compensation for temperature and patient airway pressure induced changes to the magnetic field |
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| WO1991014470A1 (en) * | 1990-03-23 | 1991-10-03 | Bird Products Corporation | Ventilator exhalation valve |
| US6161539A (en) * | 1997-03-13 | 2000-12-19 | Nellcor Puritan Bennett Incorporated | Spring piloted safety valve with jet venturi bias |
| US5771884A (en) * | 1997-03-14 | 1998-06-30 | Nellcor Puritan Bennett Incorporated | Magnetic exhalation valve with compensation for temperature and patient airway pressure induced changes to the magnetic field |
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| CN103055401A (en) | 2013-04-24 |
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