CN115607796A - Low-noise electromagnetic valve for breathing machine with high control precision and high sensitivity and breathing machine - Google Patents
Low-noise electromagnetic valve for breathing machine with high control precision and high sensitivity and breathing machine Download PDFInfo
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- 230000035945 sensitivity Effects 0.000 title claims abstract description 36
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 16
- 230000003068 static effect Effects 0.000 claims abstract description 28
- 239000000945 filler Substances 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 230000004907 flux Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 210000002445 nipple Anatomy 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 241000711573 Coronaviridae Species 0.000 description 1
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
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- 201000004193 respiratory failure Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. 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
- A61M16/204—Proportional used for inhalation control
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention provides a low-noise electromagnetic valve for a respirator with high control precision and high sensitivity and the respirator, and belongs to the technical field of electromagnetic valves. The problems of low flow control precision, insufficient sensitivity and low noise of the electromagnetic valve of the existing respirator are solved. The electromagnetic valve comprises a static valve core, an electromagnetic coil, a shell, a movable valve core, a spring sheet seat, a plane spring sheet and a pipe connecting port, wherein the static valve core and the movable valve core are armatures; the number of turns of the electromagnetic coil is 1590-1600, the wire diameter is 0.1-0.12mm, the mass of the movable valve core is 1-2g, the length L range of the static valve core is 12-13mm, and the diameter D range is 4-6mm. The invention is suitable for the requirements of high-requirement control precision, sensitivity and low noise of the breathing machine.
Description
Technical Field
The invention belongs to the technical field of electromagnetic valves, and particularly relates to a low-noise electromagnetic valve for a respirator, which has high control precision and high sensitivity, and the respirator.
Background
In modern clinical medicine, a ventilator is used as an effective means for providing energy through the outside to replace the self-ventilation of a human body, is widely applied to respiratory failure caused by various reasons, anesthesia respiratory management during major operations, respiratory support treatment and emergency resuscitation, and occupies an important position in the modern medical field. Particularly, with the abuse of new coronavirus from 2019 to this year, the demand for ventilators is very large at home and abroad. One of the key parts of the breathing machine is an electromagnetic valve, the working principle of the electromagnetic valve for the breathing machine is that voltage is applied to the electromagnetic valve to generate current, the current passes through an internal coil of the electromagnetic valve to generate a magnetic field, the magnetic field is conducted to two ends of an air gap through a magnetic conduction element in the electromagnetic valve, so that electromagnetic suction is generated between the air gaps to suck an armature in a closed state from a valve seat, and the valve is opened to realize that an input electric signal and an output flow signal are in a linear relation.
The existing solenoid valve of the breathing machine has the problems of low flow control precision, low sensitivity and low noise, so that a brand new solenoid valve is needed to be designed to meet the requirements of high control precision, high sensitivity and low noise.
Disclosure of Invention
In view of this, the present invention provides a low-noise solenoid valve for a ventilator with high control accuracy and high sensitivity, so as to solve the problems of low flow control accuracy, insufficient sensitivity and low noise of the solenoid valve of the existing ventilator.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a low-noise electromagnetic valve with high control precision and high sensitivity for a respirator comprises a static valve core, an electromagnetic coil, a shell, a movable valve core, a spring sheet seat, a plane spring sheet and a nozzle connecting pipe, wherein the static valve core and the movable valve core are both armatures; winding a plurality of turns of electromagnetic coils on the static valve core and the dynamic valve core;
the number of turns of the electromagnetic coil is 1590-1600, the wire diameter is 0.1-0.12mm, the mass of the movable valve core is 1-2g, the length L range of the static valve core is 12-13mm, and the diameter D range is 4-6mm;
the pipe connecting nozzle is provided with a central air inlet channel and a plurality of air outlet channels, the air outlet channels are arranged around the central air inlet channel, initially, the movable valve core is under the action of the plane elastic sheet, the upper end of the movable valve core cuts off the communication between the central air inlet channel and the air outlet channels, a gap is arranged between the lower end of the movable valve core and the upper end of the static valve core, when an electric signal is input to the electromagnetic valve, a magnetic field is formed after the electromagnetic coil is electrified, the movable valve core moves under the action of the magnetic field of the electromagnetic coil, the change of the opening amount of the communication between the central air inlet channel and the air outlet channels is realized, and after the movable valve core is completely opened, air flows into an air outlet of the air outlet channel from an air inlet of the central air inlet channel.
Furthermore, the number of turns of the magnetic coil is 1595, the wire diameter is 0.11mm, the mass of the movable valve core is 1.5g, the length L of the static valve core is 12.5mm, and the diameter D is 5mm.
Furthermore, the response time of the electromagnetic valve during power-on and power-off is respectively 5ms and 7ms; the precision is controlled within the range of +/-1 percent, and the noise is lower than 20dB.
Furthermore, the plane shrapnel comprises an inner ring, an outer ring and a plurality of shrapnels, the shrapnels are evenly arranged between the inner ring and the outer ring, and two ends of the shrapnels are respectively connected with the inner ring and the outer ring.
Furthermore, the upper end of the elastic sheet seat is provided with a flaring, a supporting step is arranged on the flaring, the supporting plate is of an annular structure, the outer annular surface of the supporting plate is arranged on the supporting step, the inner annular surface of the supporting plate is matched with a groove in the movable valve core, and the width of the groove is larger than the thickness of the supporting plate.
Furthermore, initially, the inner ring surface of the supporting plate abuts against the lower wall surface of the groove, and after the power is switched on, the movable valve core moves downwards to press the elastic sheet to deform the elastic sheet until the inner ring surface of the supporting plate abuts against the upper wall surface of the groove.
Furthermore, the planar spring plate comprises three spring plates.
Furthermore, the filler neck comprises a hollow small cylinder and a hollow large cylinder which are coaxially arranged, the hollow large cylinder is fixed on the hollow small cylinder, the bottom end of the hollow small cylinder is arranged inside the hollow large cylinder, a central air inlet channel is formed inside the hollow small cylinder, and a plurality of through air outlet channels are uniformly formed on the surface of the annular disc of the hollow large cylinder.
Furthermore, initially, the upper end of the movable valve core is abutted against the bottom end of the central air inlet channel of the filler neck under the action of the plane elastic sheet.
Another objective of the present invention is to provide a ventilator including the above-mentioned solenoid valve.
Compared with the prior art, the low-noise electromagnetic valve for the respirator, which is provided by the invention and has the advantages of high control precision and high sensitivity, has the following beneficial effects:
(1) The low-noise electromagnetic valve for the respirator, which is provided by the invention, has high control precision and high sensitivity, the winding space of the electromagnetic coil is limited in the shell, and the temperature rise generated by the electromagnetic coil influences the flow regulation precision and the use condition of the electromagnetic coil. Therefore, it is necessary to realize a large magnetomotive force with the least possible heat cost under the volume constraint; by limiting the number of turns of the electromagnetic coil to 1595 and the wire diameter to 0.11mm, the large magnetomotive force is realized at the lowest possible heat cost under the volume constraint, so that the flow regulation precision is ensured; the precision of the electromagnetic valve is controlled within the range of +/-1%.
(2) The invention creates a low-noise electromagnetic valve for a respirator with high control precision and high sensitivity, wherein a movable valve core, namely a movable armature, is used as a moving part, and the larger the mass of the low-noise electromagnetic valve is, the longer the dynamic response time of the electromagnetic valve is; although the dynamic response speed can be improved by reducing the mass of the movable valve core, namely the movable armature, according to the structure of the magnetic circuit of the electromagnet, the fact that the movable valve core, namely the movable armature is too small can cause magnetic saturation, the magnetic resistance of the original magnetic circuit is increased, and effective magnetic lines of force in the electromagnet are finally reduced; therefore, the structure of the movable valve core needs to fully consider the mass of the movable armature and the total magnetic flux of effective magnetic lines of force; the mass of the movable valve core, namely the movable armature is 1-2g, so that the magnetic load capacity is ensured, and the dynamic response speed is improved; the response time of the electromagnetic valve can reach 5ms and 7ms respectively after power-on and power-off.
(3) According to the low-noise electromagnetic valve for the respirator, which is provided by the invention, the control precision is high, the sensitivity is high, and when a static valve core with a short axial length is adopted, the sectional area of a magnetic leakage magnetic circuit is reduced, so that the magnetic resistance of the magnetic leakage magnetic circuit is increased, the magnetomotive force generated by a coil is fully utilized, and the thrust density and the operating efficiency of an electromagnet in an electromagnetic coil are improved; the length range of the static valve core, namely the static armature, is limited to be 12-13mm, the diameter range is limited to be 2-3mm, the influence of the motion of the movable valve core on magnetic flux distribution is reduced, the condition that the thrust is changed rapidly is reduced, the noise is reduced, and the noise of the electromagnetic valve is lower than 20dB.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
fig. 1 is a schematic perspective view of a low-noise solenoid valve for a ventilator with high control accuracy and high sensitivity according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view illustrating a low-noise solenoid valve for a ventilator according to an embodiment of the present invention, which has high control accuracy and high sensitivity;
fig. 3 is a schematic cross-sectional perspective view of a low-noise solenoid valve for a ventilator with high control accuracy and high sensitivity according to an embodiment of the present invention;
fig. 4 is a top view of a low noise solenoid valve for a ventilator with high control accuracy and high sensitivity according to an embodiment of the present invention;
fig. 5 is a bottom view of a low noise solenoid valve for a ventilator with high control accuracy and high sensitivity according to an embodiment of the present invention;
fig. 6 is a front view of a low noise solenoid valve for a ventilator with high control accuracy and high sensitivity according to an embodiment of the present invention;
fig. 7 is a right side view of a low noise solenoid valve for a ventilator with high control accuracy and high sensitivity according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a planar spring plate of a low-noise electromagnetic valve for a ventilator with high control accuracy and high sensitivity according to an embodiment of the present invention;
fig. 9 is a schematic diagram of the electromagnet magnetic circuit structure and the electromagnetic analysis of the low-noise electromagnetic valve for the breathing machine with high control precision and high sensitivity according to the inventive embodiment of the present invention;
fig. 10 is a force analysis diagram of a planar spring plate when the low-noise electromagnetic valve for a respirator with high control precision and high sensitivity is used according to the embodiment of the invention.
Description of reference numerals:
1. an electromagnetic valve; 2. a stationary valve core; 3. an electromagnetic coil; 4. a housing; 5. a movable valve core; 6. a spring plate seat; 7. a planar spring plate; 8. a filler neck.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative efforts shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood in a specific case by those of ordinary skill in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-8, a low-noise solenoid valve for a breathing apparatus with high control accuracy and high sensitivity comprises a static valve core 2, an electromagnetic coil 3, a shell 4, a movable valve core 5, a spring sheet seat 6, a planar spring sheet 7 and a nipple 8, wherein the static valve core 2 and the movable valve core 5 are both armatures, the static valve core 2 is fixed at the bottom inside the shell 4, the upper end of the shell 4 is in threaded connection with the spring sheet seat 6, the nipple 8 is in threaded connection with the upper part of the spring sheet seat 6, the lower end of the movable valve core 5 penetrates through the spring sheet seat 6 and extends into the shell 4 to be arranged, the supporting planar spring sheet 7 is sleeved on the upper part of the movable valve core 5, the movable valve core 5 can move up and down, the inner ring of the supporting planar spring sheet 7 supports the movable valve core 5, the outer ring is supported by a supporting block, the supporting block is supported by a supporting plate, and the supporting plate is supported on the spring sheet seat 6; a plurality of turns of electromagnetic coils 3 are wound on the static valve core 2 and the movable valve core 5;
the number of turns of the electromagnetic coil 3 is 1590-1600, the wire diameter is 0.1-0.12mm, the mass of the movable valve core 5 is 1-2g, the length L range of the static valve core 2 is 12-13mm, and the diameter D range is 4-6mm;
the filler pipe mouth 8 is provided with a central gas inlet channel and a plurality of gas outlet channels, the plurality of gas outlet channels are arranged around the central gas inlet channel, initially, the upper end of the movable valve core 5 cuts off the communication between the central gas inlet channel and the plurality of gas outlet channels under the action of the plane elastic sheet 7, a gap is arranged between the lower end of the movable valve core 5 and the upper end of the static valve core 2, when an electric signal is input to the electromagnetic valve 1, the electromagnetic coil 3 is electrified to form a magnetic field, the movable valve core 5 moves under the action of the magnetic field of the electromagnetic coil 3 to realize the change of the opening amount communicated between the central gas inlet channel and the gas outlet channels, and after the movable valve core 5 is opened, gas flows into a gas outlet of the gas outlet channel from a gas inlet of the central gas inlet channel; the gas flow rate has a close relation with the pressure difference between the inlet and the outlet and the opening degree of the movable valve core 5, thereby establishing the relation between the electric signal of the electromagnetic valve 1 and the mechanical signal and the gas flow rate signal of the displacement of the movable valve core 5.
The number of turns of the magnetic coil is 1595, the wire diameter is 0.11mm, the mass of the movable valve element 5 is 1.5g, the length L of the static valve element 2 is 12.5g, and the diameter D is 5mm. The response time of the electromagnetic valve 1 is 5ms and 7ms respectively when the electromagnetic valve is powered on and powered off; the precision is controlled within the range of +/-1 percent, and the noise is lower than 20dB. The electromagnetic valve has higher flow control precision, higher sensitivity and lower noise, and is suitable for high requirements on a breathing machine.
The planar elastic sheet 7 comprises an inner ring, an outer ring and a plurality of elastic sheets, the elastic sheets are evenly arranged between the inner ring and the outer ring, and two ends of each elastic sheet are connected with the inner ring and the outer ring respectively. The plane spring plate 7 comprises three spring plates. So arrange and can carry out better support to movable valve core 5, and the atress is even.
The upper end of the spring piece seat 6 is provided with a flaring, a supporting step is arranged on the flaring, the supporting plate is of an annular structure, the outer annular surface of the supporting plate is arranged on the supporting step, the inner annular surface of the supporting plate is matched with the groove in the movable valve core 5, and the width of the groove is larger than the thickness of the supporting plate.
Initially, the inner ring surface of the supporting plate is abutted against the lower wall surface of the groove, the movable valve core 5 is abutted against the bottom end of the central air inlet channel of the filler neck under the action of the plane elastic sheet 7, and the upper end of the movable valve core 5 is abutted against the bottom end of the central air inlet channel of the filler neck; after the power is switched on, the movable valve core 5 moves downwards, and the elastic sheet is compressed to deform until the inner ring surface of the supporting plate abuts against the upper wall surface of the groove.
The filler neck 8 comprises a hollow small cylinder and a hollow large cylinder which are coaxially arranged, the hollow large cylinder is fixed on the hollow small cylinder, the bottom end of the hollow small cylinder is arranged inside the hollow large cylinder, a central air inlet channel is formed inside the hollow small cylinder, and a plurality of through air outlet channels are uniformly formed on the surface of an annular disc of the hollow large cylinder.
As shown in fig. 9, which is a schematic diagram of an electromagnetic circuit structure and electromagnetic analysis of the electromagnetic valve, it can be seen that the moving valve core/moving armature 5 is too small, which causes magnetic saturation, increases the magnetic resistance of the original magnetic circuit, and finally reduces the effective magnetic line of force in the electromagnet. Therefore, the optimization of the structure of the movable valve core/movable armature 5 not only needs to optimize the mass of the movable armature, but also needs to consider the total magnetic flux of effective magnetic lines. Since the effective magnetic flux of the electromagnet is related to the excitation strength of the static valve core/static armature 2, the housing 4 and the electromagnetic coil 3, the optimal design of the dynamic valve core/dynamic armature 5 needs to be matched with other electromagnetic components. A mass equation, a magnetic flux equation and an electromagnetic thrust equation of the movable valve core/movable armature 5 can be established, and the equations are simultaneously established, the mass and the magnetic load capacity of the movable valve core/movable armature 5 are comprehensively considered, and multi-objective and multi-constraint optimization is carried out on the movable armature; a more suitable mass of the moving valve core/moving armature 5 results.
As shown in fig. 10, the number of turns of the electromagnetic coil 3 of the present application is 1595, the wire diameter is 0.11mm, the mass of the movable valve element 5 is 1-2g, the length L of the stationary valve element 2 ranges from 12mm to 13mm, and the diameter D ranges from 4 mm to 6mm, when the electromagnetic valve works, the force exerted on the planar spring 7 is uniformly distributed, and the force is small, that is, when the movable valve element 5 of the electromagnetic valve moves, the impact on the planar spring 7 is small, and thus the noise is small.
The application also provides a breathing machine, which comprises the electromagnetic valve 1 and the turbine.
The embodiments of the invention disclosed above are intended only to help illustrate the invention. The examples are not intended to be exhaustive or to limit the invention to the precise embodiments described. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and with the various embodiments.
Claims (10)
1. The utility model provides a low noise solenoid valve for breathing machine with high control accuracy, high sensitivity which characterized in that: the electromagnetic valve comprises a static valve core (2), an electromagnetic coil (3), a shell (4), a movable valve core (5), a spring plate seat (6), a plane spring plate (7) and a connecting pipe mouth (8), wherein the static valve core (2) and the movable valve core (5) are both armatures, the static valve core (2) is fixed at the bottom inside the shell (4), the upper end of the shell (4) is in threaded connection with the spring plate seat (6), the connecting pipe mouth (8) is in threaded connection with the upper part of the spring plate seat (6), the lower end of the movable valve core (5) penetrates through the spring plate seat (6) and extends into the shell (4) to be arranged, a supporting plane spring plate (7) is sleeved on the upper part of the movable valve core (5), the movable valve core (5) can move up and down, the inner ring of the supporting plane spring plate (7) supports the movable valve core (5), the outer ring is supported by a supporting block, the supporting block is supported by a supporting plate, and the supporting plate is supported on the spring plate seat (6); a plurality of turns of electromagnetic coils (3) are wound on the static valve core (2) and the movable valve core (5);
the number of turns of the electromagnetic coil (3) is 1590-1600, the wire diameter is 0.1-0.12mm, the mass of the movable valve core (5) is 1-2g, the length L range of the static valve core (2) is 12-13mm, and the diameter D range is 4-6mm;
the automatic air inlet and outlet valve is characterized in that the filler neck (8) is provided with a central air inlet channel and a plurality of air outlet channels, the plurality of air outlet channels are arranged around the central air inlet channel, initially, the movable valve element (5) is under the action of the plane elastic sheet (7), the upper end of the movable valve element (5) cuts off the communication between the central air inlet channel and the plurality of air outlet channels, a gap is formed between the lower end of the movable valve element (5) and the upper end of the static valve element (2), when an electric signal is input to the electromagnetic valve (1), a magnetic field is formed after the electromagnetic coil (3) is electrified, the movable valve element (5) moves under the action of the magnetic field of the electromagnetic coil (3), the change of the opening amount of the communication between the central air inlet channel and the air outlet channels is realized, and after the movable valve element (5) is completely opened, air flows into an air outlet of the air outlet channels from an air inlet of the central air inlet channel.
2. The low-noise electromagnetic valve for the respirator, which has high control precision and high sensitivity, according to claim 1, is characterized in that: the number of turns of the magnetic coil is 1595, the wire diameter is 0.11mm, the mass of the movable valve core (5) is 1.5g, the length L of the static valve core (2) is 12.5mm, and the diameter D is 5mm.
3. The low-noise electromagnetic valve for the respirator, which has high control precision and high sensitivity, according to claim 2, is characterized in that: the response time of the electromagnetic valve (1) is 5ms and 7ms respectively when the electromagnetic valve is powered on and powered off; the precision is controlled within the range of +/-1 percent, and the noise is lower than 20dB.
4. The low-noise electromagnetic valve for the respirator, which has high control precision and high sensitivity, according to claim 1, is characterized in that: the plane shrapnel (7) comprises an inner ring, an outer ring and a plurality of shrapnels, the shrapnels are evenly arranged between the inner ring and the outer ring, and two ends of the shrapnels are respectively connected with the inner ring and the outer ring.
5. The low-noise electromagnetic valve for the respirator, which has high control precision and high sensitivity, according to claim 1, is characterized in that: the upper end of the spring piece seat (6) is provided with a flaring, a supporting step is arranged on the flaring, the supporting plate is of an annular structure, the outer annular surface of the supporting plate is arranged on the supporting step, the inner annular surface of the supporting plate is matched with a groove on the movable valve core (5), and the width of the groove is larger than the thickness of the supporting plate.
6. The low-noise solenoid valve for breathing apparatus according to claim 5, wherein the solenoid valve has a high control accuracy and a high sensitivity, and is characterized in that: initially, the inner ring surface of the supporting plate abuts against the lower wall surface of the groove, and after the power is switched on, the movable valve core (5) moves downwards to press the elastic sheet to enable the elastic sheet to deform until the inner ring surface of the supporting plate abuts against the upper wall surface of the groove.
7. The low-noise solenoid valve for breathing apparatus according to claim 4, wherein the solenoid valve has a high control accuracy and a high sensitivity, and the solenoid valve further comprises: the plane shrapnel (7) comprises three shrapnels.
8. The low-noise solenoid valve for breathing apparatus with high control precision and high sensitivity as set forth in claim 1, wherein: the filler neck (8) comprises a hollow small cylinder and a hollow large cylinder which are coaxially arranged, the hollow large cylinder is fixed on the hollow small cylinder, the bottom end of the hollow small cylinder is arranged inside the hollow large cylinder, a central air inlet channel is formed inside the hollow small cylinder, and a plurality of through air outlet channels are uniformly formed on the surface of the annular disc of the hollow large cylinder.
9. The low-noise electromagnetic valve for the respirator, which has high control precision and high sensitivity, according to claim 1, is characterized in that: initially, the movable valve core (5) is under the action of the plane elastic sheet (7), and the upper end of the movable valve core (5) is abutted against the bottom end of the central air inlet channel of the filler neck.
10. A ventilator, characterized by: comprising a solenoid valve (1) according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211156536.3A CN115607796B (en) | 2022-09-22 | 2022-09-22 | Low-noise electromagnetic valve with high control precision and high sensitivity for breathing machine and breathing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211156536.3A CN115607796B (en) | 2022-09-22 | 2022-09-22 | Low-noise electromagnetic valve with high control precision and high sensitivity for breathing machine and breathing machine |
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| CN115607796A true CN115607796A (en) | 2023-01-17 |
| CN115607796B CN115607796B (en) | 2024-04-26 |
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| CN202211156536.3A Active CN115607796B (en) | 2022-09-22 | 2022-09-22 | Low-noise electromagnetic valve with high control precision and high sensitivity for breathing machine and breathing machine |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010022515A1 (en) * | 2000-01-21 | 2001-09-20 | Masatoshi Yamashita | Magnetic resonance imaging apparatus |
| US20040108395A1 (en) * | 2001-09-13 | 2004-06-10 | Hitachi, Ltd. | Electromagnetic fuel injector |
| CN101105165A (en) * | 2006-07-13 | 2008-01-16 | 株式会社日立制作所 | Electromagnetic fuel injection valve |
| CN102797898A (en) * | 2011-05-28 | 2012-11-28 | 李景峰 | Micro solenoid valve with low power consumption |
| CN108167506A (en) * | 2018-03-07 | 2018-06-15 | 潍坊力创电子科技有限公司 | High-speed electromagnetic valve |
| CN212928785U (en) * | 2020-06-18 | 2021-04-09 | 江门市蓬江区茵豪电器有限公司 | Water drain valve for steaming and baking oven |
| CN213899897U (en) * | 2020-10-15 | 2021-08-06 | 深圳市安保科技有限公司 | Proportional flow valve |
| CN215780800U (en) * | 2021-06-01 | 2022-02-11 | 北京航天新立科技有限公司 | Micro-miniature proportional electromagnetic valve device applied to breathing machine |
-
2022
- 2022-09-22 CN CN202211156536.3A patent/CN115607796B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010022515A1 (en) * | 2000-01-21 | 2001-09-20 | Masatoshi Yamashita | Magnetic resonance imaging apparatus |
| US20040108395A1 (en) * | 2001-09-13 | 2004-06-10 | Hitachi, Ltd. | Electromagnetic fuel injector |
| CN101105165A (en) * | 2006-07-13 | 2008-01-16 | 株式会社日立制作所 | Electromagnetic fuel injection valve |
| CN102797898A (en) * | 2011-05-28 | 2012-11-28 | 李景峰 | Micro solenoid valve with low power consumption |
| CN108167506A (en) * | 2018-03-07 | 2018-06-15 | 潍坊力创电子科技有限公司 | High-speed electromagnetic valve |
| CN212928785U (en) * | 2020-06-18 | 2021-04-09 | 江门市蓬江区茵豪电器有限公司 | Water drain valve for steaming and baking oven |
| CN213899897U (en) * | 2020-10-15 | 2021-08-06 | 深圳市安保科技有限公司 | Proportional flow valve |
| CN215780800U (en) * | 2021-06-01 | 2022-02-11 | 北京航天新立科技有限公司 | Micro-miniature proportional electromagnetic valve device applied to breathing machine |
Non-Patent Citations (1)
| Title |
|---|
| 利建波;程西云;: "基于μC/OS-II的智能呼吸机软件设计", 工业控制计算机, no. 06, 28 June 2006 (2006-06-28), pages 34 - 35 * |
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| CN115607796B (en) | 2024-04-26 |
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