CN102494175B - Driving circuit of solenoid valve - Google Patents
Driving circuit of solenoid valve Download PDFInfo
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- CN102494175B CN102494175B CN 201110431959 CN201110431959A CN102494175B CN 102494175 B CN102494175 B CN 102494175B CN 201110431959 CN201110431959 CN 201110431959 CN 201110431959 A CN201110431959 A CN 201110431959A CN 102494175 B CN102494175 B CN 102494175B
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Abstract
The invention provides a driving circuit of a solenoid valve, comprising a first switch, a second switch, a first relay, a second relay, a first diode and a second diode, wherein the first switch is controlled by a first input voltage, and the second switch is controlled by a second input voltage; the first relay is controlled to start and stop by the first switch, and the second relay is controlled to start and stop by the second switch; the anode of the first diode is connected with an ACL (Alternating Current Live Line) end, the cathode of the second diode is connected with one end of the first relay, and the other end of the first relay is connected with an ACN ((Alternating Current Null Line) end; the cathode of the second diode is connected with the ACL end, the anode of the second diode is connected with one end of the second relay, and the other end of the second relay is connected with the ACN end. According to the embodiment of the invention, the solenoid valve is stable in driving way and low in energy consumption and is directly driven by the two relays so as to have the advantages that the price is low and the cost of a whole circuit board is reduced.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, design a kind of driving circuit for electromagnetic valve especially.
Background technique
At chiller plant, be to adopt solid-state relay or controllable silicon to drive as the solenoid-driven mode of using on the refrigerator at present.This driving mode needs the Zero Crossing Point of testing circuit to control solid-state relay or silicon controlled turns on and off.When system power supply adopted the switch power scheme, zero cross signal can only detect in the forceful electric power side, and the bigger power consumption of meeting specific consumption on zero cross detection circuit has not only influenced whole automatically controlled reliability like this, also can cause the complete machine energy consumption too high.On the other hand, this driving mode cost is also than higher.
In addition, the major part of using on refrigerator at present all is a switch power, forceful electric power zero passage detection power consumed on high-power resistor is bigger, and the heating components and parts of this high power consumption cause the components and parts high temperature ageing of peripheral region on the one hand easily, on the other hand the complete machine efficiency are also had certain influence.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.
For this reason, the objective of the invention is to propose a kind of driving circuit for electromagnetic valve, this drive circuit is stable, low in energy consumption to the driving mode of solenoid valve, and directly drives with two relays, have cheap, the advantage of the cost of reduction entire circuit plate.
To achieve these goals, embodiments of the invention have proposed a kind of driving circuit for electromagnetic valve, it is characterized in that, comprising: first switch and second switch, and described first switch is controlled by first input voltage, and described second switch is controlled by second input voltage; First relay and second relay, described first switch is controlled the opening and closing of described first relay, and described second switch is controlled the opening and closing of described second relay; First diode, the anode of described first diode links to each other with the ACL end, and the negative electrode of described first diode links to each other with an end of described first relay, and the other end of described first relay links to each other with described ACN end; And second diode, the negative electrode of described second diode links to each other with described ACL end, and the anode of described second diode links to each other with an end of described second relay, and the other end of described second relay is held with described ACN and is linked to each other.
First input voltage is a high level, and described second input voltage is when being low level, and described first relay is opened so that direct impulse flows into solenoid valve.Second input voltage is a high level, and described first input voltage is when being low level, and described second relay is opened so that negative-going pulse flows into solenoid valve
Driving circuit for electromagnetic valve according to the embodiment of the invention, this drive circuit is a high level by controlling first input voltage, and when controlling second input voltage simultaneously and being low level, and then control that first relay is opened and second cut-off so that direct impulse flows into solenoid valve, be high level perhaps by controlling second input voltage, when controlling first input voltage simultaneously and being low level, and then control that second relay is opened and first cut-off so that negative-going pulse flows into solenoid valve, thereby can be accurate, control flows into the pulse of solenoid valve simply, therefore the driving mode of solenoid valve has been avoided the detection mode of zero cross detection circuit, driving mode is more stable, and reduced Overall Power Consumption, in addition, directly with two relays solenoid valve is driven, have cheaply, it is low to dispel the heat, can avoid parts to be subjected to heat ageing, and then reduce the cost of The whole control circuit board.
In addition, driving circuit for electromagnetic valve according to the above embodiment of the present invention can also have following additional technical characteristics:
In one embodiment of the invention, the other end of described second relay links to each other with described ACN end with electric capacity by first resistance.
In one embodiment of the invention, described first switch and second switch are triode.
In one embodiment of the invention, described driving circuit for electromagnetic valve also comprises: second resistance and the 3rd resistance of mutual series connection, one end of described second resistance links to each other with power supply, the other end of described the 3rd resistance links to each other with the base stage of described first switch, and the node between described second resistance and described the 3rd resistance links to each other with described first input voltage; And the 4th resistance and the 5th resistance of series connection mutually, one end of described the 4th resistance links to each other with power supply, the other end of described the 5th resistance links to each other with the base stage of described first switch, and the node between described the 4th resistance and described the 5th resistance links to each other with described second input voltage.
In one embodiment of the invention, described first input voltage is a high level, and described second input voltage is when being low level, and described first relay is opened so that direct impulse flows into solenoid valve.
In one embodiment of the invention, described second input voltage is a high level, and described first input voltage is when being low level, and described second relay is opened so that negative-going pulse flows into solenoid valve.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming embodiment's the description in conjunction with following accompanying drawing, wherein:
Fig. 1 is the circuit diagram of the driving circuit for electromagnetic valve of the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, described embodiment's example is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment who is described with reference to the drawings is exemplary, only is used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " vertically ", " laterally ", " on ", close the orientation of indications such as D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position is based on orientation shown in the drawings or position relation, only be that the present invention for convenience of description and simplification are described, rather than indication or the hint device of indication or element must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, unless otherwise prescribed and limit, need to prove that term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly by intermediary, for the ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
Below in conjunction with the driving circuit for electromagnetic valve of accompanying drawing description according to the embodiment of the invention.
With reference to figure 1, comprise the first switch Q34, second switch Q33, the first relay R L10, the second relay R L11, the first diode D11 and the second diode D12 according to the driving circuit for electromagnetic valve 100 of the embodiment of the invention.
The first switch Q34 is controlled by the first input voltage value_R, and second switch Q33 is controlled by the second input voltage value_F.The first switch Q34 controls the opening and closing of the first relay R L10, and second switch Q33 controls the opening and closing of the second relay R L11.The anode of the first diode D11 links to each other with the ACL end, and the negative electrode of the first diode D11 links to each other with the end of the first relay R L10, and the other end of the first relay R L10 links to each other with the ACN end.The negative electrode of the second diode D12 links to each other with the ACL end, and the anode of the second diode D12 links to each other with the end of the second relay R L11, and the other end of the second relay R L11 links to each other with the ACN end.
Above-mentioned first switch Q34 and second switch Q33 for example are triode shown in Figure 1.And the base stage of the first switch Q34 is controlled by the first input voltage value_R, the base stage of second switch Q33 is controlled by the second input voltage value_F, thus, shutoff and the conducting by the first input voltage value_R and the second input voltage value_F may command triode.
In an example of the present invention, the first input voltage value_R is a high level when control, and when controlling the second input voltage value_F simultaneously and being low level, the first relay R L10 opens and the second relay R L11 closes so that direct impulse flows into solenoid valve.
Further, the second input voltage value_F is a high level when control, and when controlling the first input voltage value_R simultaneously and being low level, the second relay R L11 opens and the first relay R L10 closes so that negative-going pulse flows into solenoid valve.
Driving circuit for electromagnetic valve 100 according to the embodiment of the invention, this drive circuit 100 is a high level by controlling the first input voltage value_R, and when controlling the second input voltage value_F simultaneously and being low level, and then control that the first relay R L10 opens and the second relay R L11 closes so that direct impulse flows into solenoid valve, be high level perhaps by controlling the second input voltage value_F, when controlling the first input voltage value_R simultaneously and being low level, and then control that the second relay R L11 opens and the first relay R L10 closes so that negative-going pulse flows into the solenoid valve (not shown), thereby can be accurate, control flows into the different pulses (direct impulse or negative-going pulse) of solenoid valve simply, therefore the driving mode of solenoid valve has been avoided the detection mode of zero cross detection circuit, driving mode is more stable, and reduced Overall Power Consumption, in addition, directly solenoid valve is driven with two relays (the first relay R L10 and the second relay R L11), have cheap, it is low to dispel the heat, can avoid parts to be subjected to heat ageing, and then reduce the cost of The whole control circuit board.
In conjunction with Fig. 1, in an example of the present invention, the other end of the second relay R L11 links to each other with the ACN end with capacitor C 41 by first resistance R 78.Certainly, the other end of the first relay R L10 links to each other with the ACN end with capacitor C 41 by first resistance R 78 equally.
Once more in conjunction with Fig. 1, the driving circuit for electromagnetic valve 100 of the embodiment of the invention further comprises second resistance R 18 and the 3rd resistance R 14 of mutual series connection, one end of second resistance R 18 links to each other with power supply, the other end of the 3rd resistance R 14 and the first switch Q34(triode) base stage link to each other, the node between second resistance R 18 and the 3rd resistance R 14 links to each other with the first input voltage value_R.In this example, above-mentioned power supply is as being shown in Figure 1+5V direct voltage source.
The 4th resistance R 19 and the 5th resistance R 17 of mutual series connection, one end of the 4th resistance R 19 links to each other with power supply, the other end of described the 5th resistance links to each other with the base stage of described second switch, and the node between described the 4th resistance and described the 5th resistance links to each other with described second input voltage.In this example, above-mentioned power supply for example is shown in Figure 1+5V direct voltage source.But embodiments of the invention are not limited to this, and the power supply among above-mentioned two embodiments can be the same or different, and for example 1 power supply is+5V that another power supply also can adopt+12V.
Below the driving circuit for electromagnetic valve of the embodiment of the invention is done detailed description to the principle of solenoid-driven.
In conjunction with Fig. 1, when the first input voltage valve_R is high level, the first switch Q34(triode conducting) opens, the first relay R L10 closure, like this because the forward conduction characteristic of the first diode D11, electric current can only flow to ACN through the first diode D11, the first relay R L10 from ACL, because what load between ACL and the ACN is alternating voltage, flow through solenoid valve (the external solenoid valve of CN1 control interface shown in Figure 1) like this and have only direct impulse, this moment, solenoid valve led to a side, as for refrigerator, can lead to the refrigeration side of refrigerator.
If when the first input voltage valve_R is a low level, when the second input voltage valve_F is high level, the conducting of second switch Q33(triode) opens, the second relay R L11 closure, electric current can only flow to ACL through the second relay R L11, the second diode D12 from ACN like this, flows through the negative impulse of having only of solenoid valve like this, and this moment, solenoid valve led to opposite side, as for refrigerator, can lead to the freezing side of refrigerator.
As from the foregoing, the signal by valve_R, valve_F is the control electromagnetic valve guiding simply, thus the flow direction of control refrigerant.Thus, the foregoing description is avoided the detection mode of traditional zero cross detection circuit to the driving mode of solenoid valve, and driving mode is stable, and the components and parts heat dissipating capacity is low, avoids other components and parts to be subjected to heat ageing, improves the working life of product.In addition, directly drive with two conventional relays, component number is few and cheap, and then reduces the cost of entire circuit plate.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiments or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiments under the situation that does not break away from principle of the present invention and aim, scope of the present invention is limited by claim and equivalent thereof.
Claims (6)
1. a driving circuit for electromagnetic valve is characterized in that, comprising:
First switch and second switch, described first switch is controlled by first input voltage, and described second switch is controlled by second input voltage;
First relay and second relay, described first switch is controlled the opening and closing of described first relay, and described second switch is controlled the opening and closing of described second relay;
First diode, the anode of described first diode links to each other with the ACL end, and the negative electrode of described first diode links to each other with an end of described first relay, and the other end of described first relay links to each other with the ACN end; And
Second diode, the negative electrode of described second diode links to each other with described ACL end, and the anode of described second diode links to each other with an end of described second relay, and the other end of described second relay links to each other with described ACN end.
2. driving circuit for electromagnetic valve as claimed in claim 1 is characterized in that, the other end of described second relay links to each other with described ACN end with electric capacity by first resistance.
3. driving circuit for electromagnetic valve as claimed in claim 1 is characterized in that, described first switch and second switch are triode.
4. driving circuit for electromagnetic valve as claimed in claim 3 is characterized in that, also comprises:
Second resistance and the 3rd resistance of mutual series connection, one end of described second resistance links to each other with power supply, the other end of described the 3rd resistance links to each other with the base stage of described first switch, and the node between described second resistance and described the 3rd resistance links to each other with described first input voltage; And
The 4th resistance and the 5th resistance of mutual series connection, one end of described the 4th resistance links to each other with power supply, the other end of described the 5th resistance links to each other with the base stage of described second switch, and the node between described the 4th resistance and described the 5th resistance links to each other with described second input voltage.
5. as each described driving circuit for electromagnetic valve of claim 1-4, it is characterized in that described first input voltage is a high level, and described second input voltage is when being low level, described first relay is opened so that direct impulse flows into solenoid valve.
6. as each described driving circuit for electromagnetic valve of claim 1-4, it is characterized in that described second input voltage is a high level, and described first input voltage is when being low level, described second relay is opened so that negative-going pulse flows into solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110431959 CN102494175B (en) | 2011-12-20 | 2011-12-20 | Driving circuit of solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110431959 CN102494175B (en) | 2011-12-20 | 2011-12-20 | Driving circuit of solenoid valve |
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| CN102494175A CN102494175A (en) | 2012-06-13 |
| CN102494175B true CN102494175B (en) | 2013-07-24 |
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| CN 201110431959 Active CN102494175B (en) | 2011-12-20 | 2011-12-20 | Driving circuit of solenoid valve |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103247411B (en) * | 2013-05-21 | 2016-04-20 | 广州广电运通金融电子股份有限公司 | A kind of solenoid driver circuit |
| CN103291384B (en) * | 2013-06-06 | 2014-12-17 | 杭州和利时自动化有限公司 | Driving circuit of electromagnetic valve |
| CN106762540A (en) * | 2015-11-24 | 2017-05-31 | 中国科学院沈阳科学仪器股份有限公司 | A kind of energy-saving type vacuum pump nitrogen purging device |
| CN107289173A (en) * | 2016-03-30 | 2017-10-24 | 邬惠林 | The energy saving driving circuit of MCU driving DC electromagnetic valve |
| CN110360754B (en) * | 2018-04-11 | 2022-05-24 | 青岛经济技术开发区海尔热水器有限公司 | Electromagnetic valve opening control method and circuit and gas water heater |
| CN108917125A (en) * | 2018-07-11 | 2018-11-30 | 青岛海信日立空调系统有限公司 | control circuit and control method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60101374A (en) * | 1983-11-05 | 1985-06-05 | Nanao:Kk | Solenoid valve driving device |
| JP4118432B2 (en) * | 1999-01-19 | 2008-07-16 | 株式会社日本自動車部品総合研究所 | Solenoid valve drive circuit |
| CN2637853Y (en) * | 2003-09-05 | 2004-09-01 | 广东科龙电器股份有限公司 | Energy-saving electromagnetic valve control circuit |
| ATE475981T1 (en) * | 2004-04-01 | 2010-08-15 | Honeywell Technologies Sarl | CONTROL CIRCUIT FOR RELAY-OPERATED GAS VALVES |
| KR100914093B1 (en) * | 2008-11-05 | 2009-08-27 | 김국광 | Solenoid Latching Valve Yin-Yang Reversal Driving Circuit |
| CN201421763Y (en) * | 2009-03-26 | 2010-03-10 | 深圳市凌宝电子有限公司 | Control circuit structure for minor-caliber electromagnetic valve |
| CN101813032A (en) * | 2010-03-17 | 2010-08-25 | 清华大学 | Electromagnetic valve driving circuit of diesel engine |
| CN101956860B (en) * | 2010-10-28 | 2012-01-04 | 哈尔滨工业大学 | Driving device of solenoid directional valve |
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Owner name: HEFEI MIDEA REFRIGERATOR CO., LTD. Free format text: FORMER NAME: HEFEI MEDIA RONGSHIDA REFRIGERATOR CO., LTD. |
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Address after: 230601 Hefei Changjiang Road, Anhui, No. 669 Patentee after: Hefei Midea Refrigerator Co., Ltd. Patentee after: Hefei Hualing Co., Ltd. Address before: 230601 Hefei Changjiang Road, Anhui, No. 669 Patentee before: Hefei Media Rongshida Refrigerator Co., Ltd. Patentee before: Hefei Hualing Co., Ltd. |