CN109869518B - Electromagnetic valve and electromagnetic coil thereof - Google Patents
Electromagnetic valve and electromagnetic coil thereof Download PDFInfo
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- CN109869518B CN109869518B CN201711263605.XA CN201711263605A CN109869518B CN 109869518 B CN109869518 B CN 109869518B CN 201711263605 A CN201711263605 A CN 201711263605A CN 109869518 B CN109869518 B CN 109869518B
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Abstract
The invention discloses an electromagnetic valve and an electromagnetic coil thereof, wherein the electromagnetic valve comprises a valve body component and an electromagnetic coil, the electromagnetic coil comprises an electromagnetic coil body, a control circuit board and a current access component, the control circuit board comprises an input current adjusting module of the electromagnetic coil body, and when the current access component is initially electrified, the control circuit board inputs an initial current (A1) to the electromagnetic coil body; after a set time (T) is elapsed from the initial energization, the control circuit board inputs a steady-state current (A2) to the electromagnetic coil body, and the initial current (A1) is greater than the steady-state current (A2).
Description
Technical Field
The invention belongs to the technical field of fluid control, and particularly relates to an electromagnetic valve and an electromagnetic coil thereof.
Background
Solenoid valves generally include a valve body member and a solenoid. The valve body part comprises a static iron core and a movable iron core, and the working mode of the valve body part is mainly realized by switching on and off an electromagnetic coil. Solenoid valves are widely used in everyday equipment as fluid control components, such as in particular in refrigeration systems.
The refrigerants commonly used in the refrigeration system at present are R410A, R32, R134a, R404A, and the like. In order to meet the use requirements of different refrigerants, the requirement on the driving force of the electromagnetic valve is high, and the maximum action pressure difference of the electromagnetic valve is generally 3.4 MPa. For example, in a direct-acting solenoid valve, the electromagnetic force required for opening the solenoid valve is 12.1N or more. When the electromagnetic valve is opened, the sealing plug is stressed in balance, the differential pressure force borne by the sealing plug is 0, and the required electromagnetic force is more than 2.5N.
Therefore, in order for the solenoid valve to overcome the differential pressure force, the coil power must be increased to increase the electromagnetic force. After the electromagnetic valve is opened, when the opening state of the electromagnetic valve is kept, the required electromagnetic force is greatly reduced, and the power of the coil can be reduced. Therefore, how to adapt to the environment of the system and optimize the design to save energy consumption provides an improved subject for the technicians in the field.
Disclosure of Invention
The invention aims to provide an electromagnetic valve and an electromagnetic coil using the same, which reduce the power consumption of the electromagnetic coil and achieve the purpose of saving the energy consumption of the electromagnetic valve on the premise of providing the lowest electromagnetic force when the electromagnetic valve is opened.
The electromagnetic valve comprises a valve body component, wherein the valve body component comprises a valve body, a static iron core and a movable iron core, and the movable iron core is arranged in a valve sleeve of the valve body; the electromagnetic coil comprises an electromagnetic coil body, a control circuit board and a current access component, and the electromagnetic coil body is sleeved on the valve sleeve; the control circuit board comprises a regulating module of the input current of the electromagnetic coil body; when the current access component is electrified initially, the control circuit board inputs initial current to the electromagnetic coil body; after a set time elapses from the start of energization, the control circuit board inputs a steady-state current to the electromagnetic coil body, and the start current is larger than the steady-state current.
Meanwhile, the invention also provides an electromagnetic coil, which comprises an electromagnetic coil body, a control circuit board and a current access component; the control circuit board comprises a regulating module of the input current of the electromagnetic coil body; when the current access component is electrified initially, the control circuit board inputs initial current to the electromagnetic coil body; after a set time elapses from the start of energization, the control circuit board inputs a steady-state current to the electromagnetic coil body, and the start current is larger than the steady-state current.
In the solenoid valve and the solenoid coil, the regulating module can provide a relatively high current for the solenoid coil body at the starting time of electrifying and provide a relatively low stable input current for the solenoid coil body after a set time. After the electromagnetic valve is electrified, a large electromagnetic force is generated to drive the movable iron core to perform attraction action from a static state, and in a stable state of the electromagnetic valve, a small electromagnetic force is generated to keep the attraction state of the movable iron core, so that invalid power consumption is avoided.
Drawings
FIG. 1: the invention provides a schematic diagram of a solenoid valve structure;
FIG. 2: the invention provides a schematic diagram of a functional module of a control circuit;
FIG. 3: fig. 2 is a graph showing the variation of the input current of the electromagnetic coil body realized by the functional module;
FIG. 4: the invention provides a schematic diagram of another electromagnetic valve structure.
Notation and illustration:
10-an electromagnetic coil;
11-electromagnetic coil body, 12 envelope body;
20-valve body parts;
21-static iron core, 22-movable iron core;
23-valve core, 24-valve port;
25-lower bottom;
26-a valve housing;
27-screw, 28-adapter;
29-lumen;
30-a control circuit board;
31-a rectifying module and 32-a current regulating module;
321-a current stabilization control circuit;
322-a regulating circuit;
40-current access means (wiring harness);
50-an air isolation zone;
100/100A-solenoid valve.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of a solenoid valve structure according to the present invention, fig. 2 is a schematic diagram of a functional module of a control circuit according to the present invention, and fig. 3 is a graph showing a variation curve of an input current of a solenoid coil body implemented by the functional module.
As shown in fig. 1, 2 and 3. The solenoid valve 100 includes a valve body member 20 and a solenoid 10.
The valve body part 20 comprises a valve body, the valve body comprises a lower bottom 25 and a valve sleeve 26, the lower bottom 25 and the valve sleeve 26 are welded in a sealing mode to form an inner cavity 29 of the valve body, and a valve port 24 is formed in the lower bottom 25 of the valve body. A stationary core 21 is fixed in an inner chamber 29 of the valve body at one end of the valve housing 26, and a movable core 22 is slidably disposed in the inner chamber 29. The movable iron core 22 abuts against the stationary iron core 21 through a return spring, and the movable iron core 22 is fixed to the valve body 23 at one end facing the valve port 24.
The electromagnetic coil 10 includes an electromagnetic coil body 11, a control circuit board 30, and a current connection part 40.
The solenoid body 11 is fitted over a valve sleeve 26 of the valve body and fixed to the valve body member 20 by screws 27. After the electromagnetic coil body 11 is electrified, the movable iron core 22 and the static iron core 21 generate mutually attracted electromagnetic force through electromagnetic action, the movable iron core 22 overcomes the acting force of a return spring to slide and attract the static iron core 21, the valve core 23 leaves the valve port 24, then the two connecting pipes 28 of the electromagnetic valve 100 are communicated, and the electromagnetic valve is opened; when the solenoid coil body 11 is de-energized, the movable iron core 22 slides away from the stationary iron core 21 under the action of the return spring, so that the valve core 23 abuts against the valve port 24, and then the two connection pipes 28 of the solenoid valve 100 are disconnected, and the solenoid valve is closed.
In the present embodiment, the control circuit board 30 is fixed to the electromagnetic coil body 11 through the enclosure body 12. Of course, other mounting means, such as by fasteners or screws, may be used.
The control circuit board 30 includes a regulating module 32 for the input current of the solenoid coil body 11 and a rectifying module 31 for the input current of the current incoming component 40 (the "input current of the solenoid coil body 11" is the current supplied from the control circuit board 30 to the solenoid coil body 11; the "current incoming component 40" is the current incoming from the outside of the solenoid valve).
In the present embodiment, the current receiving member 40 is specifically a wire harness 40, and an external current is provided to the product of the electromagnetic valve 100 through the wire harness 40, but a connector or the like may also be adopted.
The regulation module 32 includes a steady-state current control circuit 321 for the steady-state current (a2) of the solenoid body 11 and a regulation circuit 322 for the steady-state current (a 2).
The operation of each module and circuit of the control circuit board 30 is described as follows:
1. when the solenoid valve 100 is supplied with current from the outside through the wire harness 40 (i.e., when energized), the current is switched into the control circuit board 30. If the external current is in the form of alternating current, the external current can be converted into direct current voltage through the rectifier module 31, and if the external current is in the form of direct current voltage, the direct current voltage is not affected;
2. the regulating module 32 may obtain a relatively high initial input current to the solenoid body 11 when energized (a 1). After the set time T has elapsed, the solenoid coil body 11 is caused to obtain a relatively low steady-state current (a 2). The adjustment module 32 may also be configured to set the time (T) for the current value to decay from the initial input current (a1) to the steady state current (a2) based on the core pull-in characteristics of the various solenoid valves.
3. Further, under the action of the regulating circuit 322 for regulating the steady-state current (A2) of the module 32, the current value (A2) required by the attraction of the movable iron core is predicted when the electromagnetic valve is in a steady state according to different using environments of the electromagnetic valve, and different elements (such as resistors) are selected in the circuit in advance to achieve the aim, so that the electromagnetic coil as a product can realize serialization, and the flow of organization and manufacture is simplified;
4. further, the steady-state current control circuit 321 for the steady-state current (a2) in the regulation module 32 functions as a switch circuit to control the on/off of the power supply of the solenoid coil 11 from the front-end circuit, and to maintain the stability of the coil current by the ratio and interval of the on and off time. Specifically, once the coil current is too small, the trigger switch is turned on, the front-end circuit is connected with the electromagnetic coil body, the current rises, and meanwhile, the front-end circuit also charges the energy storage element in the current stabilization control circuit 321; when the current of the electromagnetic coil body 11 is overlarge, the switch is closed, the front-end circuit is disconnected with the electromagnetic coil body 11, the energy storage element supplies power to the electromagnetic coil body 11, and the current is gradually reduced. The repeated on-off refreshing maintains the current of the solenoid body 11 in a substantially stable state, so the "steady-state current" proposed in the present invention is a relative concept compared with the current fluctuation being large, so as to keep the current fluctuation small and not to affect the attraction of the solenoid valve.
Through the optimization of the technical scheme, the control circuit board 30 is arranged, so that when the electromagnetic valve 100 is powered on at the beginning, the electromagnetic coil body 11 has a high input initial current A1; when the set time T has elapsed, the solenoid coil body 11 has a low steady-state current a 2. So that the applicable voltage range of the electromagnetic coil is wide (such as AC100V-240V, 50/60Hz), and the electromagnetic coil is universal to alternating current and direct current. The electromagnetic coil can effectively reduce the types and specifications of the electromagnetic coils, realize design serialization, facilitate production management and reduce management cost.
Considering the requirement of driving the movable iron core in the electromagnetic valve, the electromagnetic valve can save energy effectively on the premise of playing the function, and a preferred technical scheme is that when the wire harness is initially electrified, the control circuit board 30 inputs an initial current a1 to the electromagnetic coil body 11, the initial current a1 gradually attenuates to a steady-state current a2, and the initial current a1 is greater than 2 times of the steady-state current a2 (i.e. a1/a2 is greater than 2).
Considering the driving requirement of the movable iron core in the electromagnetic valve, the electromagnetic valve can effectively save energy on the premise of playing functions, and a preferable technical scheme is that the initial current A1 is gradually attenuated to the steady-state current A2, and the time for the initial current A1 to be attenuated to the steady-state current A2 is not more than 0.2 second (namely T is less than or equal to 0.2 second).
Fig. 4 is a schematic diagram of another solenoid valve configuration according to the present invention.
As shown in fig. 4, the difference from the foregoing solution is that the control circuit board 30 of the solenoid valve 100A is fixed to the solenoid body 11 through the enclosure 12, and an air isolation region 50 is provided between the control circuit board 30 and the solenoid body 11, so that the heat generated by the solenoid body 11 is prevented from being transferred to the control circuit board 30, thereby improving the reliability of the control circuit board 30.
The foregoing is only an exemplification of the preferred embodiments of the invention, which are presented to better illustrate the technical solutions of the invention, and it should be noted that a person skilled in the art can make several improvements and modifications without departing from the principle of the invention, and all such improvements and modifications should be considered as the protection scope of the invention.
Claims (8)
1. A solenoid valve, comprising:
the valve body component comprises a valve body, a static iron core and a movable iron core, wherein the movable iron core is arranged in a valve sleeve of the valve body;
the electromagnetic coil comprises an electromagnetic coil body, a control circuit board and a current access component, and the electromagnetic coil body is sleeved on the valve sleeve; the control circuit board comprises a regulating module of the input current of the electromagnetic coil body,
when the current access component starts to be electrified, the control circuit board inputs starting current (A1) to the electromagnetic coil body; after a set time (T) from the initial electrification, the control circuit board inputs a steady-state current (A2) to the electromagnetic coil body, the initial current (A1) is larger than the steady-state current (A2), the set time (T) is set according to the iron core attraction characteristics of different electromagnetic valves,
the regulation module further comprises a steady-state current control circuit for the steady-state current (A2) and a regulation circuit for the steady-state current (A2),
the regulating circuit predicts a current value required by a stable state by selecting different elements in a circuit in advance, the current stabilization control circuit comprises an energy storage element, and the current stabilization control circuit controls the on/off of the power supply of the front circuit to the electromagnetic coil and maintains the stability of the current of the electromagnetic coil through the proportion and the interval of the on and off time; when the front-end circuit is disconnected with the electromagnetic coil, the energy storage element supplies power to the electromagnetic coil.
2. The solenoid valve according to claim 1, characterized in that said control circuit board further comprises a rectifier module (31).
3. The solenoid valve according to claim 1, characterized in that when said current access means is initially energized, said control circuit board inputs a starting current (a1) to said solenoid body, said starting current (a1) being gradually attenuated to a steady state current (a2), said starting current (a1) being greater than 2 times said steady state current (a 2).
4. The solenoid valve according to claim 1, characterized in that when the current access means is initially energized, the control circuit board inputs a starting current (a1) to the solenoid body, the starting current (a1) decays gradually to a steady-state current (a2), and the time (T) for the starting current (a1) to decay to the steady-state current (a2) does not exceed 0.2 seconds.
5. The solenoid valve according to any one of claims 1-4, wherein said solenoid coil further comprises an enclosure, said control circuit board being secured to said solenoid coil body by said enclosure.
6. The solenoid valve according to claim 5, wherein an air isolation region is provided between said control circuit board and said solenoid body.
7. An electromagnetic coil, characterized in that the electromagnetic coil comprises an electromagnetic coil body, a control circuit board, a current access component, the control circuit board comprises a regulating module of input current of the electromagnetic coil body, when the current access component starts to be electrified, the control circuit board inputs starting current (A1) to the electromagnetic coil body; after a set time (T) passes from the initial electrification, the control circuit board inputs a steady-state current (A2) to the electromagnetic coil body, the initial current (A1) is larger than the steady-state current (A2), the set time (T) is set according to the iron core attraction characteristics of different electromagnetic valves, the adjusting module further comprises a steady-state current control circuit of the steady-state current (A2) and an adjusting circuit of the steady-state current (A2), the adjusting circuit predicts the current value required by the steady state by selecting different elements in the circuit in advance, the steady-state current control circuit comprises an energy storage element, and the steady-state current control circuit controls the on/off of the power supply of the electromagnetic coil by a front-end circuit and maintains the stability of the current of the electromagnetic coil through the proportion and the interval of the on and off time; when the front-end circuit is disconnected with the electromagnetic coil, the energy storage element supplies power to the electromagnetic coil.
8. The electromagnetic coil of claim 7, wherein said control circuit board further comprises a rectifier module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263605.XA CN109869518B (en) | 2017-12-05 | 2017-12-05 | Electromagnetic valve and electromagnetic coil thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263605.XA CN109869518B (en) | 2017-12-05 | 2017-12-05 | Electromagnetic valve and electromagnetic coil thereof |
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| Publication Number | Publication Date |
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| CN109869518A CN109869518A (en) | 2019-06-11 |
| CN109869518B true CN109869518B (en) | 2021-08-24 |
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| CN201711263605.XA Active CN109869518B (en) | 2017-12-05 | 2017-12-05 | Electromagnetic valve and electromagnetic coil thereof |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000205444A (en) * | 1999-01-20 | 2000-07-25 | Db Seiko:Kk | Solenoid valve |
| MXPA03009537A (en) * | 2001-04-19 | 2004-12-06 | Asco Controls Lp | Solenoid valves actuator encapsulation. |
| CN2846941Y (en) * | 2005-07-21 | 2006-12-13 | 湖南省安化自控设备有限责任公司 | High efficiency energy saving electromagnetic valve |
| CN1991221A (en) * | 2005-12-26 | 2007-07-04 | 浙江三花制冷集团有限公司 | Control coil of magnetic valve |
| CN200961709Y (en) * | 2006-10-20 | 2007-10-17 | 顾丰乐 | Mini electromagnetic valve |
| FR2918147A1 (en) * | 2007-06-29 | 2009-01-02 | Borgwarner Transmission System | PROPORTIONAL REVERSE FLOW CONTROL VALVE SOLENOID VALVE |
| CN101901662B (en) * | 2010-08-13 | 2016-04-13 | 浙江三花制冷集团有限公司 | A kind of solenoid |
| CN202074098U (en) * | 2011-01-09 | 2011-12-14 | 浙江三花股份有限公司 | Electromagnetic valve |
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Effective date of registration: 20220819 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 xialiquan village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
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