WO2012089097A1 - 电磁比例阀和包含该电磁比例阀的呼吸机 - Google Patents
电磁比例阀和包含该电磁比例阀的呼吸机 Download PDFInfo
- Publication number
- WO2012089097A1 WO2012089097A1 PCT/CN2011/084722 CN2011084722W WO2012089097A1 WO 2012089097 A1 WO2012089097 A1 WO 2012089097A1 CN 2011084722 W CN2011084722 W CN 2011084722W WO 2012089097 A1 WO2012089097 A1 WO 2012089097A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- electromagnetic proportional
- proportional valve
- valve body
- valve
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
- A61M16/203—Proportional
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
- F16K31/0665—Lift valves with valve member being at least partially ball-shaped
Definitions
- Electromagnetic proportional valve and ventilator including the same
- the present invention relates to the field of fluid control, and in particular to an electromagnetic proportional valve and a ventilator including the electromagnetic proportional valve.
- the emergency ventilator generally uses an on-off solenoid valve in combination with a manual flow regulating valve to control the ventilation flow rate and the total amount of ventilation.
- current therapeutic ventilators generally use a precision proportional valve to simultaneously control the gas flow rate and total amount of ventilation input to the patient.
- the existing typical proportional valve structure is shown in Figure 1. That is, the movable armature 13, the fixed spool 4, and the electromagnetic force of the coil 9, driven by the electromagnetic force of the coil 9, the valve core moves to the left and right along the guiding and sealing action of the sealing member 16' to achieve the purpose of adjusting the size of the valve port a'.
- the invention aims to provide an electromagnetic proportional valve and a ventilator including the electromagnetic proportional valve, which can effectively avoid the instability caused by the friction force to the flow control, overcome the hysteresis error of the flow control, and realize the stable control of the small flow rate. , reducing the difficulty of processing and production.
- an electromagnetic proportional valve comprising a valve body having a cavity; a coil holder sealed at an open end of a cavity of the valve body; and a coil wound around the coil holder
- the coil holder has an inner cavity, and further includes: an armature fixedly disposed in the inner cavity of the coil holder; the valve core bracket, one side is connected to the first spring fixedly disposed on the inner wall of the valve body, and the other side is connected to the sleeve
- the second spring on the armature is suspended in the cavity of the valve body by the first spring and the second spring; the valve core is disposed in the valve core bracket.
- a permanent magnet is disposed at an end of the spool holder facing away from the valve body, and the permanent magnet is coupled to the second spring.
- the core bracket is sleeved in the first spring and has a stop flange forming a limit on the first spring.
- the permanent magnet is sleeved on the second spring, and the other end of the second spring abuts on the coil holder.
- the first spring is a strong spring.
- the second spring is a weak spring.
- a sealing ring is disposed on the joint surface of the coil holder and the valve body.
- a limit block is provided on the end face of the armature opposite to the permanent magnet.
- a ventilator comprising the electromagnetic proportional valve described above.
- the valve core is located in the valve core bracket, and is suspended in the cavity of the valve body by a spring connected to the two ends of the valve core bracket, thereby avoiding the movement of the valve core and the valve body to contact each other, and avoiding the friction force.
- the instability caused by flow control and the hysteresis caused by the change in flow rate can stabilize the flow controlled by the proportional valve for a long time.
- FIG. 1 is a schematic structural view of a prior art electromagnetic proportional valve
- FIG. 2 is a schematic structural view of an electromagnetic proportional valve according to an embodiment of the present invention.
- Figure 3 shows a schematic view of a pipeline connection in accordance with an embodiment of the present invention
- Figure 4 shows a current-flow monotonic graph in accordance with an embodiment of the present invention.
- an electromagnetic proportional valve includes a valve body 2 having a cavity; a coil holder 11 sealed at an open end of a cavity of the valve body 2; and a coil 9 wound around the coil holder 11
- the coil holder 11 has an inner cavity
- the electromagnetic proportional valve further includes an armature 8 fixedly disposed in the inner cavity of the coil holder 11; the spool holder 5 is connected to the first spring 3 fixedly disposed on the inner wall of the valve body 2 The other side is connected to the second spring 7 sleeved on the armature 8, and is suspended by the first spring 3 and the second spring 7.
- the valve body 4 is disposed in the cavity of the valve body 2; the valve body 4 is disposed in the valve body bracket 5. The direction of the arrow in the figure represents the direction of gas flow.
- the embodiment of the present invention is fundamentally identical to the existing proportional valve in that it controls the proportional valve output flow rate depending on the magnitude of the input current.
- the existing proportional valve relies on the electromagnetic force generated by the coil or the armature to drive the displacement of the valve core to realize the opening or closing of the proportional valve;
- the invention uses the coil or the armature not directly in contact with the valve core, and uses the permanent magnet and the electromagnet
- the mutual attraction or repulsive force within a certain distance drives the movement of the spool supported by the strong spring and the weak spring to open or close the proportional valve.
- the valve body 2 is a supporting member of the electromagnetic proportional valve
- the left side is a gas source inlet of the proportional valve
- the filter 1 is installed in the gas source inlet, which can filter the gas entering the proportional valve to prevent impurities from entering, and can ensure the electromagnetic ratio.
- the control accuracy of the valve extends its service life.
- the valve port a and the valve body 4 cooperate with each other, that is, the valve core 4 moves to the left or the right to open or close the valve port a.
- a permanent magnet 6 is mounted on the right side of the spool bracket 5, and a spool 4 is mounted on the left side.
- the left side of the spool bracket 5 is provided with a strong spring, that is, the first spring 3, and the right side is provided with a weak spring, that is, the second spring 7, and the strong spring and the weak spring interact to support the valve core bracket 5, avoiding the valve core bracket 5 and the valve body 2 contact.
- One end of the strong spring is disposed on the inner wall of the valve body 2, and the other end is sleeved over the outer wall of the valve body bracket 5 and then abuts against the stop flange 51 of the valve body bracket 5.
- the permanent magnet 6 protrudes from the end of the valve body bracket 5 facing away from the valve core 4, and extends into the weak spring, that is, the second spring 7, and one end of the weak spring abuts on the side wall of the valve core bracket 5, and the other end 4
- the wire is attached to the coil holder 11.
- the gangster 8 is fixedly mounted with the coil bracket 11 and extends out of the coil bracket 11 into the cavity of the valve body 2, which is wound with a weak spring, the armature 8 supports the weak spring, and the weak spring supports the permanent magnet 6.
- the end face of the armature 8 opposite to the permanent magnet 6 is provided with a limit block 18 for limiting the movement of the permanent magnet 6 with the spool support 5, preventing the permanent magnet 6 from contacting the armature 8 to cause wear of the armature 8, or causing the armature 8 to Changes in nature.
- the magnetic size and polarity of the armature 8 change with the magnitude and direction of the current flowing into the coil 9.
- the size of the current and the direction of the current can be controlled to control the size of the spool opening of the electromagnetic proportional valve so that the flow rate of the fluid satisfies the need.
- the frame 11 is fixedly connected to the valve body 2, and a sealing ring 12 is added on the contact surface to enhance the airtightness of the electromagnetic proportional valve.
- Terminal 10 is connected to an external power source for energizing the coil and adjusting the current.
- the coil 9 is supplied with current, and gradually increases, the magnetism of the armature 8 becomes larger and larger, and the armature 8 attracts the permanent magnet 6 to move to the right.
- the permanent magnet 6 drives the spool bracket 5 to move to the right, and the valve port a gradually opens. As the interaction force between the armature 8 and the permanent magnet 6 increases, the larger spring deformation force can be overcome, and the spool bracket 5 continues to move to the right. Until the permanent magnet 6 hits the limit block 18, that is, the maximum open position of the proportional valve.
- the electromagnetic proportional valve of the embodiment of the present invention is used on a therapeutic ventilator as an inspiratory flow actuator for a ventilator for accurately controlling the inhaled tidal volume per patient during each breathing cycle, or instantaneous suction flow rate control.
- a stable flow control effect is obtained, frequent calibration is avoided, and a stable flow control of 0.5 L/m required for ventilator flow rate triggering is obtained, which avoids flow control that is prone to continuous flow change in pressure mode. Hysteresis, which leads to inaccurate pressure control.
- connection in the ventilator is shown in Figure 3.
- the gas source is adjusted to a suitable pressure by the pressure reducing valve
- the flow rate through the valve port 2 and the spool 4 is adjusted from the inlet of the present embodiment.
- the output flow rate and opening time are controlled by the current flowing from the PCB to the terminal block 10.
- the ventilator is commissioned, the relationship between the proportional valve output flow and the control current is obtained by standard equipment, as shown in Fig. 4.
- the electromagnetic proportional valve of the embodiment of the invention has no friction loss, and the electromagnetic force is completely used to overcome the deformation force of the first spring 3 and the second spring 7, thereby controlling the displacement of the spool 4, changing the opening size of the valve port a, from the outlet Flow out, enter the flow monitoring module, ready to enter the patient's airway.
- the spool is located in the spool bracket and is suspended in the cavity of the valve body by a spring connected to both ends of the spool bracket to avoid
- the movement of the valve core and the valve body in contact with each other avoids the instability caused by the friction force on the flow control, and the hysteresis caused by the change of the flow rate, and the flow rate controlled by the proportional valve can be kept stable for a long time. Since there is no need to consider the fit between the valve plug and the valve body, the machining requirements of the valve plug and the valve body are reduced, and the processing difficulty is reduced. Since the pressure of the spring can be calculated, the resistance of the spring can be overcome by controlling the magnitude of the current to achieve precise control of the flow rate.
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EA201291020A EA021720B1 (ru) | 2010-12-31 | 2011-12-27 | Электромагнитный пропорциональный клапан и аппарат искусственной вентиляции легких, содержащий указанный клапан |
BR112012026059A BR112012026059A2 (pt) | 2010-12-31 | 2011-12-27 | válvula proporcional eletromagnética e um ventilador incluindo a mesma |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201010620467.8 | 2010-12-31 | ||
CN 201010620467 CN102266633B (zh) | 2010-12-31 | 2010-12-31 | 电磁比例阀和包含该电磁比例阀的呼吸机 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012089097A1 true WO2012089097A1 (zh) | 2012-07-05 |
Family
ID=45049210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/084722 WO2012089097A1 (zh) | 2010-12-31 | 2011-12-27 | 电磁比例阀和包含该电磁比例阀的呼吸机 |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN102266633B (zh) |
BR (1) | BR112012026059A2 (zh) |
EA (1) | EA021720B1 (zh) |
WO (1) | WO2012089097A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2735638C1 (ru) * | 2020-06-02 | 2020-11-05 | Игорь Георгиевич Киселев | Автоматическая система искусственной вентиляции легких |
RU2749760C1 (ru) * | 2020-11-27 | 2021-06-16 | Игорь Георгиевич Киселев | Автоматическая система искусственной вентиляции легких |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102266633B (zh) * | 2010-12-31 | 2013-08-14 | 北京谊安医疗系统股份有限公司 | 电磁比例阀和包含该电磁比例阀的呼吸机 |
CN104874065A (zh) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | 抑制呼吸机吸气阀阀芯抖动的方法及呼吸机 |
CN105498066B (zh) * | 2016-01-13 | 2017-09-12 | 深圳市诺然美泰科技股份有限公司 | 低压大流量比例控制快速响应装置及其快速响应控制阀 |
CN108853943B (zh) * | 2018-08-30 | 2020-05-22 | 武汉携康智能健康设备有限公司 | 一种人体呼吸训练设备及呼吸训练反馈方法 |
CN111794883B (zh) * | 2020-06-30 | 2021-09-10 | 东风越野车有限公司 | 一种特种车用空气滤清器的可涉水排尘装置及其安装结构 |
CN113374917B (zh) * | 2021-06-30 | 2022-07-26 | 王颖颖 | 一种灵敏度高的比例阀 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4557420A (en) * | 1982-09-10 | 1985-12-10 | Boschung Mecatronic Ag | Electromagnetically controllable spray valve and spray system |
EP0867898A1 (de) * | 1997-03-24 | 1998-09-30 | Binder Magnete GmbH | Elektromagnetisch arbeitende Stelleinrichtung |
US20020069842A1 (en) * | 2000-12-08 | 2002-06-13 | Curtis Eric Warren | Permanent magnet enhanced electromagnetic valve actuator |
CN1550273A (zh) * | 2003-05-16 | 2004-12-01 | 丰田自动车株式会社 | 电磁驱动式压铸减压阀及其驱动方法和压铸装置 |
CN101476632A (zh) * | 2008-01-03 | 2009-07-08 | 富良 | 增力式电磁安全阀 |
CN102266633A (zh) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | 电磁比例阀和包含该电磁比例阀的呼吸机 |
-
2010
- 2010-12-31 CN CN 201010620467 patent/CN102266633B/zh active Active
-
2011
- 2011-12-27 BR BR112012026059A patent/BR112012026059A2/pt not_active Application Discontinuation
- 2011-12-27 WO PCT/CN2011/084722 patent/WO2012089097A1/zh active Application Filing
- 2011-12-27 EA EA201291020A patent/EA021720B1/ru not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4557420A (en) * | 1982-09-10 | 1985-12-10 | Boschung Mecatronic Ag | Electromagnetically controllable spray valve and spray system |
EP0867898A1 (de) * | 1997-03-24 | 1998-09-30 | Binder Magnete GmbH | Elektromagnetisch arbeitende Stelleinrichtung |
US20020069842A1 (en) * | 2000-12-08 | 2002-06-13 | Curtis Eric Warren | Permanent magnet enhanced electromagnetic valve actuator |
CN1550273A (zh) * | 2003-05-16 | 2004-12-01 | 丰田自动车株式会社 | 电磁驱动式压铸减压阀及其驱动方法和压铸装置 |
CN101476632A (zh) * | 2008-01-03 | 2009-07-08 | 富良 | 增力式电磁安全阀 |
CN102266633A (zh) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | 电磁比例阀和包含该电磁比例阀的呼吸机 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2735638C1 (ru) * | 2020-06-02 | 2020-11-05 | Игорь Георгиевич Киселев | Автоматическая система искусственной вентиляции легких |
RU2749760C1 (ru) * | 2020-11-27 | 2021-06-16 | Игорь Георгиевич Киселев | Автоматическая система искусственной вентиляции легких |
Also Published As
Publication number | Publication date |
---|---|
CN102266633A (zh) | 2011-12-07 |
BR112012026059A2 (pt) | 2016-06-28 |
EA201291020A1 (ru) | 2013-06-28 |
CN102266633B (zh) | 2013-08-14 |
EA021720B1 (ru) | 2015-08-31 |
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