CN102494175A - Driving circuit of solenoid valve - Google Patents
Driving circuit of solenoid valve Download PDFInfo
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- CN102494175A CN102494175A CN2011104319597A CN201110431959A CN102494175A CN 102494175 A CN102494175 A CN 102494175A CN 2011104319597 A CN2011104319597 A CN 2011104319597A CN 201110431959 A CN201110431959 A CN 201110431959A CN 102494175 A CN102494175 A CN 102494175A
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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 on refrigerator, using 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 existing technology.
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 said first switch is controlled by first input voltage, and said second switch is controlled by second input voltage; First relay and second relay, said first switch is controlled the opening and closing of said first relay, and said second switch is controlled the opening and closing of said second relay; First diode, the anode of said first diode links to each other with the ACL end, and the negative electrode of said first diode links to each other with an end of said first relay, and the other end of said first relay links to each other with said ACN end; And second diode, the negative electrode of said second diode links to each other with said ACL end, and the anode of said second diode links to each other with an end of said second relay, and the other end of said second relay is held with said ACN and is linked to each other.
First input voltage is a high level, and said second input voltage is when being low level, and said first relay is opened so that direct impulse flows into solenoid valve.Second input voltage is a high level, and said first input voltage is when being low level, and said second relay is opened so that negative-going pulse flows into solenoid valve
According to the driving circuit for electromagnetic valve of the embodiment of the invention, this drive circuit is a high level through 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, when controlling first input voltage simultaneously and being low level through controlling second input voltage; And then control that second relay is opened and first cut-off so that negative-going pulse flows into solenoid valve, thereby can be accurately, 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 solenoid valve has been driven with two relays; Have cheap; It is low to dispel the heat, and can avoid parts to receive heat ageing, and then has reduced 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 said second relay links to each other with said ACN end with electric capacity through first resistance.
In one embodiment of the invention, said first switch and second switch are triode.
In one embodiment of the invention; Said driving circuit for electromagnetic valve also comprises: second resistance and the 3rd resistance of connecting each other; One end of said second resistance links to each other with power supply; The other end of said the 3rd resistance links to each other with the base stage of said first switch, and the node between said second resistance and said the 3rd resistance links to each other with said first input voltage; And the 4th resistance and the 5th resistance of series connection each other; One end of said the 4th resistance links to each other with power supply; The other end of said the 5th resistance links to each other with the base stage of said first switch, and the node between said the 4th resistance and said the 5th resistance links to each other with said second input voltage.
In one embodiment of the invention, said first input voltage is a high level, and said second input voltage is when being low level, and said first relay is opened so that direct impulse flows into solenoid valve.
In one embodiment of the invention, said second input voltage is a high level, and said first input voltage is when being low level, and said 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 through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming embodiment's the description from combining figs, 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, said 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.Be exemplary through the embodiment who is described with reference to the drawings below, only be 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 ", the orientation of indications such as D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation be for based on orientation shown in the drawings or position relation; Only be to describe with simplifying for the ease of describing the present invention; Rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration 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; 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 through intermediary; For those of ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
Below in conjunction with accompanying drawing the driving circuit for electromagnetic valve according to the embodiment of the invention is described.
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 through 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.
According to the driving circuit for electromagnetic valve 100 of the embodiment of the invention, this drive circuit 100 is a high level through 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, 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) through controlling the second input voltage value_F; Thereby can control the different pulses (direct impulse or negative-going pulse) that flow into solenoid valve accurately, 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 has reduced Overall Power Consumption; In addition; Directly with two relays (the first relay R L10 and the second relay R L11) solenoid valve is driven, have cheaply, it is low to dispel the heat; Can avoid parts to receive 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 through 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 through first resistance R 78 equally.
Combine Fig. 1 once more; 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 links to each other with the base stage of the first switch Q34 (triode), and 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 connecting each other; One end of the 4th resistance R 19 links to each other with power supply; The other end of said the 5th resistance links to each other with the base stage of said first switch, and the node between said the 4th resistance and said the 5th resistance links to each other with said 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 was high level, the first switch Q34 (triode conducting) opened; The first relay R L10 is closed; Because the forward conduction characteristic of the first diode D11, electric current can only flow to CAN through the first diode D11, the first relay R L10 from ACL like this, 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 working as the first input voltage valve_R is low level, when the second input voltage valve_F was high level, second switch Q33 (triode conducting) opened; The second relay R L11 is closed; 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.
By on can know that the signal through valve_R, valve_F is the control electromagnetic valve guiding simply, thereby 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 receive 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, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is 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 characteristic, structure, material or the characteristics of description can combine with suitable manner 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: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiments, scope of the present invention is limited claim and equivalent thereof.
Claims (6)
1. a driving circuit for electromagnetic valve is characterized in that, comprising:
First switch and second switch, said first switch is controlled by first input voltage, and said second switch is controlled by second input voltage;
First relay and second relay, said first switch is controlled the opening and closing of said first relay, and said second switch is controlled the opening and closing of said second relay;
First diode, the anode of said first diode links to each other with the ACL end, and the negative electrode of said first diode links to each other with an end of said first relay, and the other end of said first relay links to each other with said ACN end; And
Second diode, the negative electrode of said second diode links to each other with said ACL end, and the anode of said second diode links to each other with an end of said second relay, and the other end of said second relay links to each other with said ACN end.
2. driving circuit for electromagnetic valve as claimed in claim 1 is characterized in that, the other end of said second relay links to each other with said ACN end with electric capacity through first resistance.
3. driving circuit for electromagnetic valve as claimed in claim 1 is characterized in that, said first switch and second switch are triode.
4. like each described driving circuit for electromagnetic valve of claim 1-3, it is characterized in that, also comprise:
Second resistance and the 3rd resistance of connecting each other; One end of said second resistance links to each other with power supply; The other end of said the 3rd resistance links to each other with the base stage of said first switch, and the node between said second resistance and said the 3rd resistance links to each other with said first input voltage; And
The 4th resistance and the 5th resistance of connecting each other; One end of said the 4th resistance links to each other with power supply; The other end of said the 5th resistance links to each other with the base stage of said first switch, and the node between said the 4th resistance and said the 5th resistance links to each other with said second input voltage.
5. like each described driving circuit for electromagnetic valve of claim 1-4, it is characterized in that said first input voltage is a high level, and said second input voltage is when being low level, said first relay is opened so that direct impulse flows into solenoid valve.
6. like each described driving circuit for electromagnetic valve of claim 1-5, it is characterized in that said second input voltage is a high level, and said first input voltage is when being low level, said 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 true CN102494175A (en) | 2012-06-13 |
| CN102494175B CN102494175B (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110431959 Active CN102494175B (en) | 2011-12-20 | 2011-12-20 | Driving circuit of solenoid valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247411A (en) * | 2013-05-21 | 2013-08-14 | 广州广电运通金融电子股份有限公司 | Electromagnet drive circuit |
| CN103291384A (en) * | 2013-06-06 | 2013-09-11 | 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 |
| 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 |
| CN110360754A (en) * | 2018-04-11 | 2019-10-22 | 青岛经济技术开发区海尔热水器有限公司 | A kind of solenoid valve valve opening control method, control circuit and gas heater |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247411A (en) * | 2013-05-21 | 2013-08-14 | 广州广电运通金融电子股份有限公司 | Electromagnet drive circuit |
| 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 |
| CN103291384A (en) * | 2013-06-06 | 2013-09-11 | 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 |
| CN110360754A (en) * | 2018-04-11 | 2019-10-22 | 青岛经济技术开发区海尔热水器有限公司 | A kind of solenoid valve valve opening control method, control circuit and gas heater |
| 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 |
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| CN102494175B (en) | 2013-07-24 |
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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. |