CN103055401A - Breathing machine and proportional valve - Google Patents
Breathing machine and proportional valve Download PDFInfo
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- CN103055401A CN103055401A CN2011103190841A CN201110319084A CN103055401A CN 103055401 A CN103055401 A CN 103055401A CN 2011103190841 A CN2011103190841 A CN 2011103190841A CN 201110319084 A CN201110319084 A CN 201110319084A CN 103055401 A CN103055401 A CN 103055401A
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- proportioning valve
- armature
- soft magnet
- housing
- seal cover
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Abstract
The invention provides a breathing machine and a proportional valve. The proportional valve comprises a shell body and a valve seat. The shell body comprises a cavity body, an inlet, an outlet and a valve port are formed in the valve seat, the shell body is connected with the valve seat in a sealing mode, and the inlet is communicated with the valve port. A coil, a first soft magnet, an armature, a first elastic element and a seal cover plate are arranged inside the shell body. The coil is wound on the outer periphery of the first soft magnet, the first magnet is arranged on an axial first side of the armature, the seal cover plate is connected with an axial second side of the armature, the first elastic element is arranged on the second side of the armature, and the first soft magnet drives the armature to enable the surface of the seal cover plate to contact with or separate from the end face of the valve port. Flow control of the proportional valve is realized through the opening and the closing between the seal cover plate and the end face of the valve port, wherein the opening and the closing are controlled in an electromagnetic mode. Therefore, the aging problem of a seal ring when the seal ring is used for sealing does not exist, and the proportional valve has the advantages of being good in sealing effect, high in response speed, low in cost, convenient to repair, and capable of reducing hysteresis phenomenon.
Description
Technical field
The present invention relates to the valve field, more specifically, relate to a kind of respirator and proportioning valve.
Background technology
Respirator is a kind of assisted ventilation unit, and it is connected to patient end simultaneously with suction nozzle and exhaust tube, and the patient is from the suction nozzle draw gas of respirator, again by the exhaust tube Exhaust Gas.In the use procedure of respirator, must carry out mechanical ventilation to the patient, respirator can carry compressor or requirement provides the source of the gas that is no less than 4bar pressure, namely needs a valve that can carry out the high-pressure high-flow proportion control to carry out the control of ventilation.For the patient who is receiving treatment, the control of the size of ventilation is very important (particularly infant patient and Cavity in Critical Patients), therefore, need to accurately control and require to have to the flow of respirator the response speed of rapid sensitive.Correspondingly, necessarily require flow valve under the air flue safe pressure, to have good sealing, and when different pressures, can open quickly and accurately.Yet the proportioning valve that uses on the respirator of the prior art has that sealing effectiveness is bad, hysteresis is serious, response speed is not high, cost is high, inconvenient maintenance, the poor problem of versatility.
Summary of the invention
The present invention aims to provide a kind of respirator and proportioning valve, and is bad with the sealing effectiveness of the proportioning valve that solves prior art, hysteresis serious, response speed is not high, cost is high, inconvenient maintenance, the poor problem of versatility.
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 is provided with import, outlet and valve port on the valve seat; Housing is connected with valve base sealing; Import is communicated with valve port; Be provided with coil, the first soft magnet, armature, the first flexible member and seal cover board in the housing; Coil is around the periphery setting of the first soft magnet, the first soft magnet is arranged on the first axial side of armature, seal cover board is connected with the second axial side of armature, the second side at armature is provided with the first flexible member, and the first soft magnet drives armature so that the end contact of the surface of seal cover board and valve port or separate.
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, the first side butt of pressure-regulating device and armature.
Further, pressure-regulating device comprises the second flexible member, and pressure-regulating device also comprises adjusting screw(rod) and the float mandrels that is separately positioned on the second flexible member two ends, the first side butt of an end of float mandrels and 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 is respectively applied to produce the opposite magnetic field of magnetic with the second soft magnet.
Further, the second soft magnet has through hole, and at least a portion of armature is arranged in the through hole of the second soft magnet actively.
Further, housing comprises the first housing and the second housing, and the first housing and the second housing are threaded connection, the end butt 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 slidingly 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 an end of connecting rod passes seal dissepiment and is connected with Connection Block, and the other end of connecting rod is connected with seal cover board.
Further, the first flexible member is spring.
Further, be provided with the sealing inner core in the valve port of valve seat, the surface of seal cover board with the sealing inner core end contact or separate, seal cover board with the sealing inner core all be metal.
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 is by the flow-control of the folding between the end face of electromagnetic mode control seal cover board and valve port with realization Comparative Examples valve, therefore, there is not the sealing ring problem of aging when using the sealing ring sealing, have that good sealing effect, response speed are high, low high, the easy to maintenance characteristics of cost, and reduced hysteresis.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, 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 among the present invention comprises housing 1, and housing 1 comprises cavity; Valve seat 2 is provided with import 21, outlet 22 and valve port 23 on the valve seat 2; Housing 1 is tightly connected with valve seat 2; Import 21 is communicated with valve port 23; Be provided with coil 3, the first soft magnet 4, armature 5, the first flexible member 6 and seal cover board 7 in the housing 1; Coil 3 is around the periphery setting of the first soft magnet 4, the first soft magnet 4 is arranged on the first axial side of armature 5, seal cover board 7 is connected with the second axial side of armature 5, be provided with that the first flexible member 6, the first soft magnets 4 drive armature 5 so that the end contact of the surface of seal cover board 7 and valve port 23 or separate in the second side of armature 5.During work, can apply certain DC current (or voltage) to coil 3, so that coil 3 produces magnetic field, this magnetic field will place the first soft magnet 4 of coil 3 to magnetize to form DC electromagnet immediately, be provided with air-gap between the first soft magnet 4 and the armature 5, therefore, after 4 magnetization of the first soft magnet, the first soft magnet 4 just attracts armature 5 to the direction motion of the first soft magnet 4, thereby drive thereupon together motion of seal cover board 7, so seal cover board 7 separates with valve port 23 so that the proportioning valve among the present invention is in open mode, at this moment, be output by valve port 23 and outlet 22 successively from the fluid (such as gas or liquid) of import 21.Further, gradually increase along with the DC current that offers coil, the intensity in the magnetic field that the first flexible member 6 produces also increases step by step, correspondingly, the electromagnetic attraction that produces also increases gradually, is subjected to the effect of this electromagnetic attraction, and armature 5 drive seal cover boards 7 and the first flexible member 6 that is connected with seal cover board 7 move to the direction of the first soft magnet 4, specifically, the displacement of seal cover board 7 is directly proportional with the size of the electric current that offers coil 3 (or voltage).Like this, because the displacement of the unlatching of seal cover board 7 is directly proportional with the flow of fluid, thereby just realized the linear change of electric current (or voltage) and flow, especially, when the first soft magnet 4 reached capacity magnetic field intensity, even if strengthen electric current (or voltage), flow also no longer increased.Further, when electric current (or voltage) when changing descendingly, 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 fits fully with valve port 23, thereby proportioning valve is disconnected.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 among the present invention can reach zero.In the whole process that the flow of proportioning valve is in the present invention adjusted, flow and electric current (or voltage) are linear.Because the present invention realizes by the folding between the end face of seal cover board 7 and valve port 23, especially, what consist of between the two is metal sealing (being that the two all adopts metal to make), therefore, there is not the sealing ring problem of aging when using the sealing ring sealing, prolonged sealing life of the present invention; Further, there is not Elastic penetration in seal cover board itself, therefore, can obtain to respond fast; In addition, there is not mutual friction condition between the end face of seal cover board 7 and valve port 23 yet, thereby greatly reduced hysteresis, can obtain higher frequency, correspondingly also further prolonged service life (especially, its fast response time＜35 millisecond, access times can be above 200,000,000 times).Preferably, be provided with on the valve port 23 of valve seat 2 sealing inner core 103, the surface of seal cover board 7 with the sealing inner core 103 end contact or separate.As shown in Figure 1, the part of the proportioning valve among the present invention is few, neither be high to the requirement of machining accuracy, therefore, have that Mechanical Reliability is high, the characteristics of processing and manufacturing cost, and also be convenient to keep in repair quickly and easily and safeguard; Further, the present invention adopts modularized design, and therefore, the actuator of proportioning valve can be used as a general part and uses, and only needs to change valve body and 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 realize the switch of valve by the lift-off seal cover plate, and this design is so that proportioning valve has very little leakage rate in working pressure range.
Preferably, preferably, the first flexible member 6 is spring (particularly leaf spring, especially, this leaf spring is flexible).Especially, leaf spring has two, armature can be suspended between the leaf spring of two flexibilities, therefore, parts that armature is adjacent have been eliminated (especially, the parts that armature is adjacent are made by metal) contact and mechanical friction, thereby prolonged service life, and reduced hysteresis.In addition, this underslung armature structure is so that armature can be made as far as possible little and light as far as possible, and therefore, with respect to plunger armature structure of the prior art, the armature structure among the present invention has the high frequency response performance that has competitiveness.In addition, owing to there not being mechanical friction, proportioning valve among the present invention can directly be used DC power supply (can directly power with DC or PWM), and do not need other electronic component, further, use the Switching Power Supply of PWM can greatly reduce hysteresis, and make hysteresis be reduced to 1%.
Preferably, proportioning valve comprises that also pressure-regulating device 8, the first soft magnets 4 comprise through hole, and pressure-regulating device 8 is arranged in the through hole of the first soft magnet 4, the first side butt of pressure-regulating device 8 and armature 5.Therefore, can apply a restoring force 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 to the active force of 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, thereby can play better sealing effectiveness.In addition, in some cases when the performance of the first flexible member 6 and/or pressure-regulating device 8 is weakened (for example debug process or life-time service and), can regulate by pressure-regulating device 8 size of above-mentioned active force, so that this active force reaches predetermined value.Preferably, pressure-regulating device 8 comprises the second flexible member 82, and pressure-regulating device 8 also comprises adjusting screw(rod) 81 and the float mandrels 83 that is separately positioned on the second flexible member 82 two ends, the first side butt of an end of float mandrels 83 and 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 needs are regulated, can pass through spanner turn adjusting screw(rod) 81, thereby realizes easily regulating.
Preferably, proportioning valve comprises that also being provided with magnetism-isolating loop 10, the first soft magnets 4 between the second soft magnet 9, the first soft magnets 4 and the second soft magnet 9 is respectively applied to produce the opposite magnetic field of magnetic with the second soft magnet 9.Adopt the second soft magnet 9 can make armature 5 in the process that falls after rise to valve port 23, more easily operation.Adopt magnetism-isolating loop 10 can block two magnetic fields of the opposite direction that the first soft magnet 4 and the second soft magnet 9 produce, the two is independent of each other.Preferably, the second soft magnet 9 has through hole, and at least a portion of armature 5 is arranged in the through hole of the second soft magnet 9 actively.
Preferably, housing 1 comprises that the first housing 11 and the second housing 12, the first housings 11 and the second housing 12 are threaded connection the end butt 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 slidingly arranged in the through hole of dividing plate 121.Therefore, when armature 5 motion, seal dissepiment 100 is thereupon together motion also, thereby the dividing plate 121 at the second housing 12 middle parts forms dynamic seal (packing), and preventing that fluids in the valve seat 2 from entering in the cavity of housing 1 affects the actuation element normal operation of (comprising coil 3, the first soft magnet 4, armature 5, the first flexible member 6 etc.).Because have seal dissepiment 100 that working media, import and export path and actuation element is isolated, therefore, the proportioning valve among the present invention can be for gases and liquids.Preferably, be provided with sealing ring 104 in the junction of the second housing 12 and valve seat 2.
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 passes seal dissepiment 100 and is connected with Connection Block 101, and the other end of connecting rod 102 is connected with seal cover board 7.Like this, seal dissepiment 100 just has been stuck between Connection Block 101 and this boss, thereby, can be with armature 5 motions.
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, this proportioning valve is the proportioning valve in the various embodiments described above.Adopt the proportioning valve among the present invention and cooperate gas supply system just can measure by micro computer, and come the control ratio valve to obtain accurate flow through computing, feedback.Preferably, the automatically controlled part of respirator can be passed through micro computer adjustments of gas flow velocity and airway pressure, to realize different breathing patterns.
The present invention is by the flow-control of the folding between the end face of electromagnetic mode control seal cover board and valve port with realization Comparative Examples valve, therefore, there is not the sealing ring problem of aging when using the sealing ring sealing, have that good sealing effect, response speed are high, low high, the easy to maintenance characteristics of cost, and reduced hysteresis.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and 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 modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a proportioning valve is characterized in that, comprising:
Housing (1), described housing (1) comprises cavity;
Valve seat (2) is provided with import (21), outlet (22) and valve port (23) on the described valve seat (2); Described housing (1) is tightly connected with described valve seat (2); Described import (21) is communicated with described valve port (23);
Be provided with coil (3), the first soft magnet (4), armature (5), the first flexible member (6) and seal cover board (7) in the described housing (1);
Described coil (3) is around the periphery setting of described the first soft magnet (4), described the first soft magnet (4) is arranged on the first axial side of described armature (5), described seal cover board (7) is connected with the second axial side of described armature (5), described the second side at described armature (5) is provided with described the first flexible member (6), and described the first soft magnet (4) drives described armature (5) so that the end contact of the surface of described seal cover board (7) and described valve port (23) or separate.
2. proportioning valve according to claim 1, it is characterized in that, described proportioning valve also comprises pressure-regulating device (8), described the first soft magnet (4) comprises through hole, described pressure-regulating device (8) is arranged in the described through hole of described the first soft magnet (4), the first side butt of described pressure-regulating device (8) and 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 adjusting screw(rod) (81) and the float mandrels (83) that is separately positioned on described the second flexible member (82) two ends, the first side butt of an end of described float mandrels (83) and 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 the first soft magnet (4) and the second soft magnet (9), described the first soft magnet (4) is respectively applied to produce the opposite magnetic field of magnetic with the second soft magnet (9).
5. proportioning valve according to claim 4 is characterized in that, described the second soft magnet (9) has through hole, and at least a portion of described armature (5) is arranged in the described through hole of described the second soft magnet (9) actively.
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 the first housing (11) is threaded connection with the second housing (12), the end butt of described the second soft magnet (9) and described the second housing (12).
7. proportioning valve according to claim 6, it is characterized in that, the middle part of described the second housing (12) is provided with the dividing plate (121) with through hole, described proportioning valve also comprises the seal dissepiment (100) that is positioned between described armature (5) and the seal cover board (7), and described seal dissepiment (100) is slidingly arranged in the described through hole of described dividing plate (121).
8. proportioning valve according to claim 7 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) passes described seal dissepiment (100) and is connected with described Connection Block (101), and the other end of described connecting rod (102) is connected with described seal cover board (7).
10. each described proportioning valve is characterized in that according to claim 1-9, and described the first flexible member (6) is spring.
11. each described proportioning valve according to claim 1-9, it is characterized in that, be provided with sealing inner core (103) in the valve port (23) of described valve seat (2), the end contact of the surface of described seal cover board (7) and described sealing inner core (103) or separate, described seal cover board (7) all is metal with described sealing inner core (103).
12. a respirator, it comprises proportioning valve, it is characterized in that, described proportioning valve is each described proportioning valve among the 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 true CN103055401A (en) | 2013-04-24 |
| CN103055401B CN103055401B (en) | 2015-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110319084.1A Active CN103055401B (en) | 2011-10-19 | 2011-10-19 | Respirator and proportioning valve |
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| Country | Link |
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| CN (1) | CN103055401B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879541A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Proportioning valve |
| CN105268077A (en) * | 2014-06-03 | 2016-01-27 | 侯夫辰 | Electromagnetic valve |
| CN105498066A (en) * | 2016-01-13 | 2016-04-20 | 深圳市诺然美泰科技有限公司 | Low-pressure large-flux ratio control quick response device and quick response control valve thereof |
| WO2017005030A1 (en) * | 2015-07-06 | 2017-01-12 | 北京谊安医疗系统股份有限公司 | Ejector rod automatic alignment concentric device |
| CN106573124A (en) * | 2014-06-27 | 2017-04-19 | 金斯顿呼吸资本有限责任公司 | Ventilator flow valve |
| WO2021098192A1 (en) * | 2019-11-19 | 2021-05-27 | 深圳市科曼医疗设备有限公司 | Proportional valve and ventilator |
| CN113251199A (en) * | 2021-07-02 | 2021-08-13 | 星宇电子(宁波)有限公司 | Proportion control method of double-disc-spring type precise proportional valve for respirator |
| CN114209938A (en) * | 2021-11-23 | 2022-03-22 | 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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| US6161539A (en) * | 1997-03-13 | 2000-12-19 | Nellcor Puritan Bennett Incorporated | Spring piloted safety valve with jet venturi bias |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879541A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Proportioning valve |
| CN104879541B (en) * | 2014-02-28 | 2018-11-13 | 北京谊安医疗系统股份有限公司 | Proportioning valve |
| CN105268077A (en) * | 2014-06-03 | 2016-01-27 | 侯夫辰 | Electromagnetic valve |
| CN105268077B (en) * | 2014-06-03 | 2018-03-20 | 侯夫辰 | Magnetic valve |
| CN106573124A (en) * | 2014-06-27 | 2017-04-19 | 金斯顿呼吸资本有限责任公司 | Ventilator flow valve |
| WO2017005030A1 (en) * | 2015-07-06 | 2017-01-12 | 北京谊安医疗系统股份有限公司 | Ejector rod automatic alignment concentric device |
| CN105498066A (en) * | 2016-01-13 | 2016-04-20 | 深圳市诺然美泰科技有限公司 | Low-pressure large-flux ratio control quick response device and quick response control valve thereof |
| WO2021098192A1 (en) * | 2019-11-19 | 2021-05-27 | 深圳市科曼医疗设备有限公司 | Proportional valve and ventilator |
| CN113251199A (en) * | 2021-07-02 | 2021-08-13 | 星宇电子(宁波)有限公司 | Proportion control method of double-disc-spring type precise proportional valve for respirator |
| 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 |
| CN114209938A (en) * | 2021-11-23 | 2022-03-22 | 北京谊安医疗系统股份有限公司 | Pressure control method and control system for breathing machine |
| 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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| Publication number | Publication date |
|---|---|
| CN103055401B (en) | 2015-09-30 |
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