CN111120716B - Micro-power consumption electromagnetic valve - Google Patents
Micro-power consumption electromagnetic valve Download PDFInfo
- Publication number
- CN111120716B CN111120716B CN202010031428.8A CN202010031428A CN111120716B CN 111120716 B CN111120716 B CN 111120716B CN 202010031428 A CN202010031428 A CN 202010031428A CN 111120716 B CN111120716 B CN 111120716B
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- tube
- resistor
- diode
- npn
- pnp
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 238000004146 energy storage Methods 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Classifications
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- 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
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- 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
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
- F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet
-
- 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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a micro-power consumption electromagnetic valve, which comprises a valve body and a pilot head assembly arranged on the valve body, wherein the pilot head assembly comprises a sleeve, an electromagnetic coil and a controller, a static iron core, a reset spring and a movable iron core for opening or closing the valve body are sequentially arranged in the sleeve along the axial direction, the electromagnetic coil is arranged on the outer side of the sleeve in a surrounding mode, the controller is electrically connected with the electromagnetic coil, a permanent magnet is arranged on the outer side of the electromagnetic coil, and the controller comprises an MCU processor, a sampling circuit, a switching circuit, an H bridge circuit and an energy storage capacitor; the method has the advantages of low power consumption and simple operation.
Description
Technical Field
The invention belongs to the technical field of electromagnetic valves, and particularly relates to a micro-power consumption electromagnetic valve.
Background
Solenoid valves are solenoid-operated industrial devices used in industrial control systems to regulate the direction, flow, velocity, and other parameters of a medium, and are of a wide variety of solenoid valves, such as two-position two-way solenoid valves, two-position three-way solenoid valves, two-position four-way solenoid valves, three-position three-way solenoid valves, and the like.
The existing electromagnetic valve is generally composed of a valve body, a coil and a pilot head assembly, wherein the valve body is opened when the current is supplied, and the valve body is closed after the current is supplied. If the electromagnetic valve is required to be kept in an open state, the electromagnetic valve must be always electrified, and the power consumption is high during use. Self-holding electromagnetic valves exist in the market, after a coil is electrified, a movable iron core and a fixed iron core are attracted, the electromagnetic valve is opened, then the electromagnetic valve is powered off, the strong magnetism is used for continuously keeping the movable iron core and the fixed iron core to be attracted, and the electromagnetic valve is still kept in an opened state; when the electromagnetic valve needs to be closed, reverse instantaneous current needs to be introduced into the coil to separate the movable iron core from the static iron core, the electromagnetic valve is closed, the time of the introduced instantaneous current cannot be too long, otherwise, the valve is opened again after being closed, and the operation is complicated.
Disclosure of Invention
The invention aims to solve the technical problem of providing a micro-power consumption electromagnetic valve with lower power consumption and simple operation.
The technical scheme adopted for solving the technical problems is as follows: the micro-power consumption electromagnetic valve comprises a valve body and a pilot head assembly arranged on the valve body, wherein the pilot head assembly comprises a sleeve, an electromagnetic coil and a controller, a static iron core, a return spring and a movable iron core for opening or closing the valve body are sequentially arranged in the sleeve along the axial direction, the electromagnetic coil is arranged on the outer side of the sleeve in a surrounding mode, the controller is electrically connected with the electromagnetic coil, a permanent magnet is arranged on the outer side of the electromagnetic coil, the controller comprises an MCU processor, a sampling circuit, a switching circuit, an H bridge circuit and an energy storage capacitor, the sampling circuit comprises a first resistor and a second resistor, the H bridge circuit comprises a first diode, a first NPN tube, a second NPN tube, a third NPN tube, a fourth NPN tube, a first PNP tube, a second PNP tube, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor, the 1 st pin of the MCU processor, one end of the first resistor and the positive electrode of the first diode are respectively connected with power supply voltage, the 3 rd pin of the MCU processor, the other end of the first resistor and one end of the second resistor are connected, the 4 th pin of the MCU processor is connected with the switch circuit, the 6 th pin of the MCU processor is connected with one end of the third resistor, the other end of the third resistor is connected with the base electrode of the first NPN tube, the collector electrode of the first NPN tube, the base electrode of the second NPN tube, the base electrode of the first PNP tube and one end of the fourth resistor are connected, the other end of the fourth resistor, one end of the energy storage capacitor, the negative electrode of the first diode, the collector electrode of the second NPN tube, the collector of the third NPN tube and one end of the fifth resistor are connected, the emitter of the second NPN tube, the emitter of the first PNP tube and one end of the electromagnetic coil are connected, the other end of the electromagnetic coil, the emitter of the third NPN tube and the emitter of the second PNP tube are connected, the other end of the fifth resistor, the base of the third NPN tube, the base of the second PNP tube and the collector of the fourth NPN tube are connected, the base of the fourth NPN tube is connected with one end of the sixth resistor, the other end of the sixth resistor is connected with the 5 th pin of the MCU processor, the 2 nd pin of the MCU processor, the other end of the second resistor is grounded, the other end of the energy storage capacitor, the emitter of the first NPN tube, the collector of the second NPN tube and the PNP of the fourth NPN tube are grounded.
The switching circuit comprises a seventh resistor and a switch, one end of the seventh resistor is connected with power supply voltage, the other end of the seventh resistor, a4 th pin of the MCU processor and one end of the switch are connected, and the other end of the switch is grounded.
The second NPN tube is connected in parallel with a second diode, the positive electrode of the second diode is connected with the emitter of the second NPN tube, and the negative electrode of the second diode is connected with the collector of the second NPN tube; the third NPN tube is connected in parallel with a third diode, the positive electrode of the third diode is connected with the emitter of the third NPN tube, and the negative electrode of the third diode is connected with the collector of the third NPN tube; the first PNP tube is connected in parallel with a fourth diode, the positive electrode of the fourth diode is connected with the collector electrode of the first PNP tube, and the negative electrode of the fourth diode is connected with the emitter electrode of the first PNP tube; the second PNP tube is connected in parallel with a fifth diode, the positive electrode of the fifth diode is connected with the collector electrode of the second PNP tube, and the negative electrode of the fifth diode is connected with the emitter electrode of the second PNP tube.
The MCU processor is an integrated chip with the model of PIC10F 200.
Compared with the prior art, the invention has the advantages that the movable iron core is separated from the static iron core at the beginning, the movable iron core is inserted into the valve body to close the valve body, when the valve needs to be opened, the switch circuit is closed, the 5 th pin of the MCU processor outputs a high level, the 6 th pin of the MCU processor outputs a low level, the first NPN pipe, the third NPN pipe and the first PNP pipe are cut off, the second NPN pipe, the fourth NPN pipe and the second PNP pipe are conducted, the electromagnetic coil generates a magnetic field in the same direction as the permanent magnet, the movable iron core approaches and attracts the static iron core, the valve body is conducted, the energy storage capacitor is fully charged, after the valve is stabilized for a certain time, the switch circuit is disconnected, the 5 th pin and the 6 th pin of the MCU processor output low level, the second NPN pipe and the third NPN pipe are conducted, the first NPN pipe, the fourth NPN pipe, the first PNP pipe and the second PNP pipe are cut off, no current passes through the electromagnetic coil, the electromagnetic coil is stopped from being powered, the magnetic field generated by the permanent magnet continues to keep the attraction of the movable iron core, the valve body is kept on, the energy consumption at the moment is only very tiny standby current of the controller, when the valve is required to be closed, the external power supply voltage is directly cut off, the level change of the 3 rd pin input to the MCU processor in the sampling circuit is changed from high to low, the MCU processor immediately enables the 5 th pin to output low level and the 6 th pin to output high level, the energy storage capacitor discharges, at the moment, the first NPN tube, the third NPN tube and the first PNP tube are conducted, the second NPN tube, the fourth NPN tube and the second PNP tube are cut off, the electromagnetic coil generates a magnetic field opposite to the permanent magnet, the magnetic field counteracts the magnetic field generated by the permanent magnet, the movable iron core is far away from the static iron core under the action of the reset spring, the valve body is closed, the power consumption is low, and the operation is simple and convenient.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic circuit structure of the present invention.
In the figure: 1. a valve body; 2. a pilot head assembly; 21. a sleeve; 22. an electromagnetic coil; 23. a controller; 231. an MCU processor; 232. a sampling circuit; 233. a switching circuit; 234. an H-bridge circuit; 235. an energy storage capacitor; 24. a stationary core; 25. a return spring; 26. a movable iron core; 3. and a permanent magnet.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Embodiment one: as shown in the figure, the micro-power consumption electromagnetic valve comprises a valve body 1 and a pilot head assembly 2 arranged on the valve body 1, wherein the pilot head assembly 2 comprises a sleeve 21, an electromagnetic coil 22 and a controller 23, a static iron core 24, a return spring 25 and a movable iron core 26 for opening or closing the valve body 1 are sequentially arranged in the sleeve 21 along the axial direction, the electromagnetic coil 22 is arranged on the outer side of the sleeve 21 in a surrounding mode, and the controller 23 is electrically connected with the electromagnetic coil 22.
In this embodiment, the permanent magnet 3 is disposed outside the electromagnetic coil 22, the controller 23 includes an MCU processor 231, a sampling circuit 232, a switch circuit 233, an H-bridge circuit 234 and an energy storage capacitor 235, the sampling circuit 232 includes a first resistor R1 and a second resistor R2, the H-bridge circuit 234 includes a first diode D1, a first NPN tube Q1, a second NPN tube Q2, a third NPN tube Q3, a fourth NPN tube Q4, a first PNP tube Q5, a second PNP tube Q6, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, the positive electrode of the first resistor R1, the negative electrode of the first resistor R1, the 3 rd pin of the MCU processor 231, the other end of the first resistor R1 and one end of the second resistor R2 are connected respectively, the 4 th pin of the MCU processor 231 is connected with the switch circuit 233, the 6 th pin of the MCU processor 231 is connected with one end of the third resistor R3, the other end of the third resistor R3 is connected with the base electrode of the first NPN tube Q1, the collector electrode of the first NPN tube Q1, the base electrode of the second NPN tube Q2, the base electrode of the first PNP tube Q5 and one end of the fourth resistor R4 are connected, the other end of the fourth resistor R4, one end of the energy storage capacitor 235, the negative electrode of the first diode D1, the collector electrode of the second NPN tube Q2, the collector electrode of the third NPN tube Q3 and one end of the fifth resistor R5 are connected, the emitter electrode of the second NPN tube Q2, the emitter electrode of the first PNP tube Q5 and one end of the electromagnetic coil 22 are connected, the other end of the electromagnetic coil 22, the emitter electrode of the third NPN tube Q3 and the emitter electrode of the second PNP tube Q6 are connected, the other end of the fifth resistor R5, the base electrode of the third NPN tube Q6 and the collector electrode of the fourth NPN tube Q4 are connected, the base electrode of the fourth NPN tube Q4 is connected with one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected with the fifth pin of the MCU 231, the 2 nd pin of the MCU processor 231, the other end of the second resistor R2 is grounded, the other end of the energy storage capacitor 235, the emitter of the first NPN tube Q1, the collector of the first PNP tube Q5, the collector of the second PNP tube Q6 and the emitter of the fourth NPN tube Q4 are all grounded.
Embodiment two: the other parts are the same as the first embodiment, except that the switch circuit 233 includes a seventh resistor R7 and a switch S1, one end of the seventh resistor R7 is connected to the power voltage, the other end of the seventh resistor R7, the 4 th pin of the MCU processor 231 and one end of the switch S1 are connected, and the other end of the switch S1 is grounded.
Embodiment III: the rest is the same as the first embodiment, except that a second diode D2 is connected in parallel to the second NPN tube Q2, the positive electrode of the second diode D2 is connected to the emitter of the second NPN tube Q2, and the negative electrode of the second diode D2 is connected to the collector of the second NPN tube Q2; the third NPN tube Q3 is connected with a third diode D3 in parallel, the positive electrode of the third diode D3 is connected with the emitter of the third NPN tube Q3, and the negative electrode of the third diode D3 is connected with the collector of the third NPN tube Q3; the first PNP tube Q5 is connected with a fourth diode D4 in parallel, the positive electrode of the fourth diode D4 is connected with the collector electrode of the first PNP tube Q5, and the negative electrode of the fourth diode D4 is connected with the emitter electrode of the first PNP tube Q5; the second PNP transistor Q6 is connected in parallel with a fifth diode D5, an anode of the fifth diode D5 is connected to a collector of the second PNP transistor Q6, and a cathode of the fifth diode D5 is connected to an emitter of the second PNP transistor Q6.
In the above three embodiments, the MCU processor 231 is an integrated chip with a type of PIC10F200, the 1 st pin of the integrated chip is a Vcc connection terminal, the 2 nd pin is a GND connection terminal, and the 3 rd pin to the 6 th pin are bidirectional I/O pins, respectively.
The brief working procedure of the micro-power consumption electromagnetic valve disclosed in the above embodiment is as follows:
When the valve is needed to be opened, the movable iron core 26 is connected with the external power supply voltage, the sampling circuit 232 sends a high-level signal to the MCU processor 231 to enable the switch circuit 233 to be closed, the 5 th pin of the MCU processor 231 outputs a high level, the 6 th pin of the MCU processor 231 outputs a low level, at the moment, the first NPN tube Q1, the third NPN tube Q3 and the first PNP tube Q5 are cut off, the second NPN tube Q2, the fourth NPN tube Q4 and the second PNP tube Q6 are conducted, the external power supply, the first diode D1, the second NPN tube Q2, the electromagnetic coil 22 and the second PNP tube Q6 form a loop, the electromagnetic coil 22 generates a magnetic field in the same direction as the permanent magnet 3, the movable iron core 26 is close to and attracted to the static iron core 24, the valve body 1 is conducted, the energy storage capacitor 235 is fully charged, the switch circuit 233 is disconnected after a certain time is stabilized, the 5 th pin and the 6 th pin of the MCU processor 231 output low level, at this time, the second NPN tube Q2 and the third NPN tube Q3 are both turned on, the first NPN tube Q1, the fourth NPN tube Q4, the first PNP tube Q5 and the second PNP tube Q6 are all turned off, no current passes through the electromagnetic coil 22, that is, the power supply to the electromagnetic coil 22 is stopped, the magnetic field generated by the permanent magnet 3 continues to keep the attraction of the moving and static iron cores, the valve body 1 remains open, the energy consumption at this time is only very tiny standby current of the controller 23, when the valve needs to be closed, the external power supply voltage is directly cut off, the level change of the 3 rd pin input to the MCU processor 231 in the sampling circuit 232 is changed from high to low, the 5 th pin outputs low level and the 6 th pin outputs high level immediately by the MCU processor 231, at this time, the first NPN tube Q1, the third NPN tube Q3 and the first PNP tube Q5 are turned on, the second NPN tube Q2, the fourth NPN tube Q4 and the second PNP tube Q6 are turned off, the energy storage capacitor 235, the third NPN tube Q3, the electromagnetic coil 22 and the first PNP tube Q5 form a loop, the electromagnetic coil 22 generates a magnetic field opposite to the permanent magnet 3, the magnetic field counteracts the magnetic field generated by the permanent magnet 3, the movable iron core 26 is far away from the static iron core 24 under the action of the reset spring 25, and the valve body 1 is closed, so that the power consumption is low, and the operation is simple and convenient.
Claims (2)
1. The micro-power consumption electromagnetic valve comprises a valve body and a pilot head assembly arranged on the valve body, wherein the pilot head assembly comprises a sleeve, an electromagnetic coil and a controller, a static iron core, a return spring and a movable iron core for opening or closing the valve body are sequentially arranged in the sleeve along the axial direction, the electromagnetic coil is arranged on the outer side of the sleeve in a surrounding mode, the controller is electrically connected with the electromagnetic coil, the micro-power consumption electromagnetic valve is characterized in that a permanent magnet is arranged on the outer side of the electromagnetic coil, the controller comprises an MCU processor, a sampling circuit, a switching circuit, an H bridge circuit and an energy storage capacitor, the sampling circuit comprises a first resistor and a second resistor, the H bridge circuit comprises a first diode, a first NPN tube, a second NPN tube, a third NPN tube, a fourth NPN tube, a first PNP tube, a second PNP tube, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor, the 1 st pin of the MCU processor, one end of the first resistor and the positive electrode of the first diode are respectively connected with power supply voltage, the 3 rd pin of the MCU processor, the other end of the first resistor and one end of the second resistor are connected, the 4 th pin of the MCU processor is connected with the switch circuit, the 6 th pin of the MCU processor is connected with one end of the third resistor, the other end of the third resistor is connected with the base electrode of the first NPN tube, the collector electrode of the first NPN tube, the base electrode of the second NPN tube, the base electrode of the first PNP tube and one end of the fourth resistor are connected, the other end of the fourth resistor, one end of the energy storage capacitor, the negative electrode of the first diode, the collector electrode of the second NPN tube, the collector of the third NPN tube and one end of the fifth resistor are connected, the emitter of the second NPN tube, the emitter of the first PNP tube and one end of the electromagnetic coil are connected, the other end of the electromagnetic coil, the emitter of the third NPN tube and the emitter of the second PNP tube are connected, the other end of the fifth resistor, the base of the third NPN tube, the base of the second PNP tube and the collector of the fourth NPN tube are connected, the base of the fourth NPN tube is connected with one end of the sixth resistor, the other end of the sixth resistor is connected with the 5 th pin of the MCU processor, the 2 nd pin of the MCU processor, the other end of the second resistor is grounded, the other end of the energy storage capacitor, the emitter of the first NPN tube, the collector of the second NPN tube and the PNP of the fourth tube are grounded;
The switching circuit comprises a seventh resistor and a switch, one end of the seventh resistor is connected with power supply voltage, the other end of the seventh resistor, a4 th pin of the MCU processor and one end of the switch are connected, and the other end of the switch is grounded;
The second NPN tube is connected in parallel with a second diode, the positive electrode of the second diode is connected with the emitter of the second NPN tube, and the negative electrode of the second diode is connected with the collector of the second NPN tube; the third NPN tube is connected in parallel with a third diode, the positive electrode of the third diode is connected with the emitter of the third NPN tube, and the negative electrode of the third diode is connected with the collector of the third NPN tube; the first PNP tube is connected in parallel with a fourth diode, the positive electrode of the fourth diode is connected with the collector electrode of the first PNP tube, and the negative electrode of the fourth diode is connected with the emitter electrode of the first PNP tube; the second PNP tube is connected in parallel with a fifth diode, the positive electrode of the fifth diode is connected with the collector electrode of the second PNP tube, and the negative electrode of the fifth diode is connected with the emitter electrode of the second PNP tube.
2. The micro-power consumption electromagnetic valve according to claim 1, wherein the MCU processor is an integrated chip with the model of PIC10F 200.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2020200285539 | 2020-01-07 | ||
| CN202020028553 | 2020-01-07 |
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| CN111120716A CN111120716A (en) | 2020-05-08 |
| CN111120716B true CN111120716B (en) | 2024-06-18 |
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| CN202020065969.8U Active CN211951612U (en) | 2020-01-07 | 2020-01-13 | Micro-power consumption electromagnetic valve |
| CN202010031428.8A Active CN111120716B (en) | 2020-01-07 | 2020-01-13 | Micro-power consumption electromagnetic valve |
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| CN211951612U (en) * | 2020-01-07 | 2020-11-17 | 星宇电子(宁波)有限公司 | Micro-power consumption electromagnetic valve |
| CN111561599A (en) * | 2020-06-16 | 2020-08-21 | 鞍山电磁阀有限责任公司 | Electromagnetic drive mechanism and electromagnetic valve |
| CN112178213B (en) * | 2020-09-30 | 2022-05-06 | 扬州苏油油成商贸实业有限公司 | High-temperature high-pressure environment electromagnetic valve |
| CN112224391A (en) * | 2020-10-12 | 2021-01-15 | 四川航天烽火伺服控制技术有限公司 | Brake device and system |
| CN114645964A (en) * | 2020-12-19 | 2022-06-21 | 广东伟创科技开发有限公司 | Intelligent control two-position two-way electromagnetic valve applied to water quality online detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211951612U (en) * | 2020-01-07 | 2020-11-17 | 星宇电子(宁波)有限公司 | Micro-power consumption electromagnetic valve |
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| US5632468A (en) * | 1993-02-24 | 1997-05-27 | Aquatec Water Systems, Inc. | Control circuit for solenoid valve |
| CA2435356A1 (en) * | 1999-07-02 | 2001-01-02 | Mac Valves, Inc. | Self-latching solenoid valve assembly and control circuit |
| CN2721998Y (en) * | 2004-05-26 | 2005-08-31 | 马卫民 | Impulsing electromagnetic valve with double magnets |
| CN201696721U (en) * | 2010-06-18 | 2011-01-05 | 广东万和新电气股份有限公司 | Driving circuit of electromagnetic valve of gas water heater |
| CN102758950B (en) * | 2012-07-25 | 2015-09-23 | 欧好光电控制技术（上海）有限公司 | Containing the electromagnetic spool device of energy storage shutdown valve module |
| CN103123011B (en) * | 2012-09-29 | 2015-07-01 | 华帝股份有限公司 | Self-suction electromagnetic valve driving device of forced-ventilated gas water heater |
| CN205877361U (en) * | 2016-08-11 | 2017-01-11 | 大连世安科技股份有限公司 | Electromagnetic valve drive circuit and solenoid valve |
| CN206962457U (en) * | 2017-05-22 | 2018-02-02 | 龙岩学院 | The new fling-cut switch of secondary capacitor |
| CN109958816B (en) * | 2017-12-14 | 2020-09-08 | 杭州三花研究院有限公司 | Control system, electromagnetic valve and control method thereof |
| CN209196235U (en) * | 2018-10-18 | 2019-08-02 | 杨前进 | A kind of solenoid valve delay working circuit of high voltage |
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2020
- 2020-01-13 CN CN202020065969.8U patent/CN211951612U/en active Active
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| CN211951612U (en) * | 2020-01-07 | 2020-11-17 | 星宇电子(宁波)有限公司 | Micro-power consumption electromagnetic valve |
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| CN211951612U (en) | 2020-11-17 |
| CN111120716A (en) | 2020-05-08 |
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