CN101261495B - Blowing device and its control circuit - Google Patents
Blowing device and its control circuit Download PDFInfo
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- CN101261495B CN101261495B CN200710037922XA CN200710037922A CN101261495B CN 101261495 B CN101261495 B CN 101261495B CN 200710037922X A CN200710037922X A CN 200710037922XA CN 200710037922 A CN200710037922 A CN 200710037922A CN 101261495 B CN101261495 B CN 101261495B
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Abstract
The invention relates to a blowing device and a control circuit thereof, wherein, the control circuit can change the conduction state along with a time period, an electromagnetic valve is further controlled to be repeatedly switched between the two states of turn-on and cut-off, the blowing device is controlled to alternately carry out the two actions of blowing and stopping in the total time period, thus achieving the purpose of enhancing the wind strength during each blowing. In addition, the switch of the states can allow the blowing device to be converted to the blowing mode which does not stop generally, thus allowing the blowing device to be more flexible on the usage.
Description
Technical field
The invention relates to a kind of control circuit of blowing device and the blowing device that uses above-mentioned control circuit, and particularly can support directly and batch (-type) the dry blowing device and the control circuit thereof of these two kinds of patterns relevant for a kind of.
Background technology
For the electronic product manufacturer, in the middle of the manufacture process of electronic product, some, dust or impurity may be occurred and produce attached to the situation on the part in its manufacturing or the way of transporting by the obtained part of upstream part manufacturer.These dust impurity most likely impact the quality of product, therefore the manufacturer of electronic product is using these parts with before being assembled into product, must carry out dust removal process to remove non-essential impurity to part earlier, then could use in the middle of product is made.
In general, the mode of carrying out dust removal process is to see through a blowing device to the part action of drying, and by wind-force with the dust Impurity removal on the part.Yet, only can only be provided continuous schedule blowing pattern mostly by the widely used blowing device of electronic product manufacturer at present.That is to say that after operating personnel pressed starting switch, blowing device just can carry out continuous blowing action to the part that is placed on wherein.Bigger for some plane, volume, also or the simple part of lines, the continuous schedule blowing pattern above dust removing effects that just can acquire a certain degree.
Yet, complex-shaped for some, volume is less, and the part of concavo-convex relief many again (for example phone housings) own, in the middle of lasting continuous blowing process, because of wind-force comparatively is short of explosive force, therefore easy-clear is not deposited in dust impurity in the part finedraw, and it is comparatively poorer that its dust removing effects just seems comparatively speaking, the more difficult purpose of reaching thorough dedusting.
Summary of the invention
In view of this, the invention provides a kind of blowing device control circuit, in order to controlling this blowing device in cycle T.T., the action of alternately drying and stopping to dry, the intensity of the wind-force that improves blowing device according to this and produced.
The invention provides a kind of blowing device, can support two kinds of patterns of direct blowing and batch (-type) blowing simultaneously, can switch different blowing patterns, and then increase the elasticity that blowing device uses according to the characteristic of the product of desiring to dry.
The present invention proposes a kind of control circuit, in order to the control blowing device.This control circuit comprises solenoid valve (solenoid valve) and cycle control circuit.Wherein solenoid valve is coupled to the air strainer in the blowing device, dries in order to drive this air strainer filtered air when the solenoid valve conduction.Cycle control circuit is coupled to the input power supply, and in cycle T.T. respectively according to the cycle very first time and second time cycle, with correspondence make solenoid valve conduction with end.
The present invention also proposes a kind of blowing device, and this blowing device comprises air strainer, solenoid valve, and cycle control circuit.Wherein, air strainer is in order to filtered air and generation blowing.Solenoid valve moves in order to drive air strainer when conducting.And cycle control circuit couples the input power supply, and in cycle T.T. respectively according to the cycle very first time and second time cycle, make repeatedly solenoid valve conduction with end.
The present invention changes the control circuit of its conducting state along with the time cycle because of the employing meeting, switch in conducting and by between this two states repeatedly with control electromagnetic valve, control in cycle T.T., hocket blowing and rest these two kinds of actions of blowing device according to this, and then the intensity of wind-force when promoting each blowing.In addition, also blowing device can be converted to general continuous blowing pattern, make more flexible that blowing device itself becomes in the use by the switching of state.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the synoptic diagram of the blowing device that illustrated according to one of the present invention preferred embodiment.
Fig. 2 is the staircase chart of the control circuit of the blowing device that illustrated according to one of the present invention preferred embodiment.
Fig. 3 is the staircase chart of the control circuit of the blowing device that illustrated according to the another preferred embodiment of the present invention.
Embodiment
In order to make content of the present invention more clear, below the example that can implement according to this really as the present invention especially exemplified by embodiment.
Fig. 1 is the synoptic diagram of the blowing device that illustrates according to preferred embodiment of the present invention.See also Fig. 1, in blowing device 100, comprise control circuit 110 and air strainer (Air Filter) 120.Wherein, control circuit 110 comprises cycle control circuit 111 and solenoid valve 113.After cycle control circuit 111 receives the input power supply, will be respectively according to the cycle very first time and second time cycle in cycle T.T., corresponding alternately makes solenoid valve 113 conductings and ends.Because air strainer 120 is coupled to solenoid valve 113, therefore when solenoid valve 113 is in conducting state in the cycle very first time, will drive air strainer 120 filtered airs, and by for example blowing mouth (not illustrating) with the action of drying; And when very first time during end cycle, solenoid valve 113 is to be in cut-off state can't drive air strainer 120 in second time cycle, so air strainer 120 also will temporarily stop the blowing action and finish up to second time cycle.That is to say that in cycle T.T., air strainer 120 can be subjected to the influence of solenoid valve 113, dry repeatedly and rest to reach the purpose of batch (-type) blowing.
In order to illustrate in greater detail the detailed operation mode of control circuit of the present invention, below do further explanation especially exemplified by another embodiment.Fig. 2 is the staircase chart (Electric Ladder Diagram) of the control circuit of the blowing device that illustrates according to preferred embodiment of the present invention.It should be noted that as shown in Figure 2 staircase chart its mainly act on function and the sequence of operations that is to emphasize this control circuit, different on meaning with the circuit diagram of the physical cabling state of accentuator circuit element.See also Fig. 2, control circuit 200 comprises contact NOM2, the change-over switch SW202 of solenoid valve MV201, cycle control circuit 202, self-hold circuit (Self-holding Circuit) 203, second working relay (Duty Relay), and the coil COT of T.T. relay (TimeRelay).
Wherein, solenoid valve MV201 couples the air strainer (not illustrating) in the blowing device, to drive the air strainer filtered air with the action of drying when the solenoid valve MV201 conducting.
In the present embodiment, cycle control circuit 202 comprises the contact NCT2 and the coil COT2 thereof of the contact NCT1 of very first time relay and coil COT1 thereof, second time relay, and the contact NCM1 of first working relay and coil COM1 thereof.
Wherein, first end of the contact NCT1 of very first time relay couples the input power supply, first end of the coil COT2 of second time relay couples second end of the contact NCT1 of very first time relay, and second end of the coil COT2 of second time relay couples common electric potential (for example ground connection).First end of the contact NCT2 of second time relay couples the input power supply, first end of the coil COM1 of first working relay couples second end of the contact NCT2 of second time relay, and second end of the coil COM1 of first working relay couples common electric potential (for example ground connection).First end of the contact NCM1 of first working relay couples the input power supply, first end of the coil COT1 of very first time relay couples second end of the contact NCM1 of first working relay, and second end of the coil COT1 of very first time relay is coupled to common electric potential (for example ground connection).
Self-hold circuit 203 is coupled to the input power supply, in order to provide the input power supply to cycle control circuit 202 in cycle T.T..Wherein, self-hold circuit 203 comprises the contact NCT of power switch SW201, T.T. relay, always work the contact NOM and the coil COM of relay and the coil COM2 of second working relay.First end of power switch SW201 couples the input power supply, T.T. first end of contact NCT of relay be coupled to second end of power switch SW201.First end of the coil COM of total work relay couples second end of the contact NCT of T.T. relay, and second end of the coil COM of the relay of always working couples common electric potential (for example ground connection).
In this control circuit 200, its first end of the contact NOM2 of second working relay is coupled to the coil COT that input power supply, second end are coupled to the T.T. relay, and the 3rd end is coupled to change-over switch SW202, and the other end of change-over switch SW202 then is coupled to cycle control circuit 202.
In the present embodiment, solenoid valve MV201 also is connected to the two ends of the coil COT1 of very first time relay, when the coil COT1 of very first time relay in the cycle very first time when electric, solenoid valve MV101 will be in conducting state; When the coil COT1 of very first time relay in second time cycle during dead electricity, solenoid valve MV201 then is in cut-off state.For the function mode of control circuit 200 further is described, following each electronic component state in the cycle very first time and second time cycle respectively in the explanation control circuit 200.
At first, when the conducting of the two ends of power switch SW201 (for example pressing power switch SW201), because T.T., the contact NCT of relay was a normally closed contact, the coil COM of therefore total work relay will get, make the contact NOM of total work relay form path, and then allow the coil COM2 of second working relay get.The contact NOM that gets electric and the relay of always working at the coil COM of total work relay forms under the situation of path, even if the state at the two ends of power switch SW201 transfers not conducting to by conducting, the coil COM2 of second working relay still can be in electricity condition.
The coil COM2 of cause second working relay gets electric, will make the contact NOM2 of second working relay form path.In one embodiment, change-over switch SW202 is coupled between the contact NOM2 and cycle control circuit 202 of second working relay.Have when the conducting of the two ends of change-over switch SW202 (for example pressing change-over switch SW202), the input power supply just can be provided to cycle control circuit 202.
In following embodiment, suppose the two ends conducting of change-over switch SW202.Contact NCT1, the contact NCT2 of second time relay of very first time relays in this moment cycle control circuit 202, and the contact NCM1 of first working relay will receive the input power supply simultaneously.At this moment, because contact NCT1, the contact NCT2 of second time relay of very first time relay and the contact NCM1 of first working relay are all normally closed contact, therefore coil COT2, the coil COM1 of first working relay of second time relay and the coil COT1 of very first time relay will get.This makes the solenoid valve MV201 on two end points of the coil COT1 be attempted by very first time relay be in conducting state, so driven blowing device interior the air strainer filtered air and the action of drying.
Because it is electric that the coil COT1 of very first time relay gets,, will the contact NCT1 formation of very first time relay be opened circuit, and then cause the coil COT2 dead electricity of second time relay through week very first time after date.Because the contact NCT2 of second time relay is a normally closed contact, when the coil COT2 of second time relay dead electricity, the contact NCT2 of second time relay will return to channel status, and this gets the coil COM1 of the working relay of winning.Yet because the contact NCM1 of first working relay also be a normally closed contact, therefore the coil COM1 of first working relay gets and electric the contact NCM1 formation of first working relay opened circuit, and then causes the coil COT1 dead electricity of very first time relay.Just because of this, the solenoid valve MV201 that is attempted by on the coil COT1 of very first time relay will transfer cut-off state to, thereby stop to drive the air strainer in the blowing device, make blowing device temporarily stop the blowing action.
What deserves to be mentioned is, in the above-mentioned cycle very first time (in this cycle blowing device dry action), when the coil COT2 of second time relay dead electricity, because the contact NCT1 of very first time relay is a normally closed contact, therefore contact NCT1 will return to channel status under the situation of power turn-on not having.The coil COT2 that will make second time relay in view of the above once again.
Because the coil COT2 of second time relay gets, therefore after through second time cycle (blowing device stops the blowing action in this cycle), the coil COM1 of first working relay make the contact NCT2 of second time relay that formation is opened circuit, so will transfer power failure state to.Because the contact NCM1 of first working relay is a normally closed contact, therefore when the coil COM1 of first working relay dead electricity, the contact NCM1 of first working relay will form path once more, and then the coil COT1 that makes very first time relay once again, so solenoid valve MV201 is and then conducting also, and the air strainer that again drives blowing device comes filtered air with the action of drying.
Next, because that the coil C0T1 of very first time relay gets is electric, passing through week very first time after date again, the contact NCT1 of very first time relay will form once more and open circuit, and this makes the coil COT2 dead electricity of second time relay.So the contact NCT2 of second time relay will form path, the coil COM1 that makes first working relay once again.And the contact NCM1 of first working relay will form off state in view of the above, and the coil COT1 that causes very first time relay is dead electricity again.At this moment, solenoid valve MV201 has entered cut-off state once more, thereby can't drive air strainer, and blowing device also will stop the blowing action once more.
In the above-described embodiments, solenoid valve MV201 is subjected to the influence of cycle control circuit 202, in the cycle very first time, enter conducting state repeatedly and dry, and in second time cycle, enter cut-off state and make blowing device stop blowing to drive blowing device.And the length of the cycle very first time and second time cycle can be set up on their own according to its demand by the user, does not limit its scope at this.Yet it should be noted that, in the present embodiment, in case when the contact NOM2 of second working relay forms path, T.T. relay coil COT also will therefore be in electricity condition, so T.T. relay contact NCT will through T.T. all after dates transfer to by path and open circuit.The coil COM of total work relay is also dead electricity thereupon therefore, and the contact NOM of the relay that causes always working opens circuit.Therefore the coil COM2 of second working relay follows dead electricity, makes the contact NOM2 of second working relay transfer off state to, and then breaks the mechanism of self-hold circuit 203 supply input power supplys to cycle control circuit 202.That is to say that after process cycle T.T., solenoid valve MV201 just can only be in cut-off state, makes the whole blowing process of blowing device finish fully.
What deserves to be mentioned is, though the foregoing description is by the time relay and working relay control circuit of the present invention have been depicted a possible kenel, usually know that the knowledgeable should know but have in the affiliated technical field, each manufacturer is all different for the design of blowing device and its control circuit, and therefore the application of invention is when being not restricted to the possible kenel of this kind.In other words, so long as the cycle control circuit in the control circuit can control electromagnetic valve enter conducting and cut-off state, spiritual place promptly according to the invention repeatedly in fixing cycle T.T..
Fig. 3 is the staircase chart of the control circuit of the blowing device that illustrated according to the another preferred embodiment of the present invention.See also Fig. 3, in the present embodiment, control circuit 300 is in order to the action of drying of control blowing device.This control circuit 300 comprise solenoid valve MV301, cycle control circuit 302, self-hold circuit 303, second working relay contact NOM2, change-over switch SW302, T.T. relay coil COT and solenoid valve change-over switch SW303.
Wherein, contact NOM2, change-over switch SW302 by cycle control circuit 302, self-hold circuit 303, second working relay and T.T. relay electronic components such as coil COT, can in cycle T.T., make solenoid valve MV301 in the cycle very first time, be in conducting state, and in second time cycle, be in cut-off state, and then reach control blowing device dry repeatedly and rest the action purpose.Because of its relation of coupling and function mode all duplicate with the foregoing description, so do not repeat them here.
Yet what deserves to be mentioned is that when the not conducting of the two ends of change-over switch SW302, cycle control circuit 302 just can't have any impact to solenoid valve MV301.Two end points conductings of this seasonal solenoid valve change-over switch SW303 are attempted by on two end points of coil COT of T.T. relay solenoid valve MV301.In view of the above, solenoid valve MV301 will be in conducting state in cycle T.T., and institute's driven air filtrator also will constantly move, and make blowing device reach the effect that continues blowing in cycle T.T..
In sum, the control circuit of blowing device of the present invention and use the blowing device of this control circuit to have following advantage at least:
1. by the mechanism of control circuit, what make that blowing device replaces in cycle T.T. dries and rests action, to reach the effect of batch (-type) blowing, promotes the intensity of the wind-force of each blowing according to this.
2. two kinds of patterns of continuous schedule blowing and batch (-type) blowing are incorporated among the blowing device, allow the user can switch to different blowing patterns, to increase the functional of blowing device according to the characteristic of product.
3. can set the blowing and the time of resting of batch (-type) blowing pattern according to different demands, it is more flexible to make that the batch (-type) blowing becomes.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (9)
1. control circuit, in order to control a blowing device, this control circuit comprises:
One solenoid valve couples the air strainer in this blowing device, dries in order to drive this air strainer filtered air when this solenoid valve conduction; And
One-period control circuit, couple one the input power supply, and in cycle T.T. respectively according to the cycle very first time and second time cycle, with correspondence make this solenoid valve conduction with end, this cycle control circuit comprises:
Very first time relay couples this an input power supply and a common electric potential, in order to set this cycle very first time;
Second time relay couples this input power supply, this common electric potential, and this very first time relay, in order to set this second time cycle; And
First working relay couples this input power supply, this common electric potential, this very first time relay, and this second time relay, wherein
In this cycle very first time, current conductive state according to the contact of the contact of the contact of this very first time relay, this second time relay and this first working relay, the coil of this very first time relay is got, and in this second time cycle, according to the current conductive state of the contact of the contact of the contact of this very first time relay, this second time relay and this first working relay, make the coil losing electricity of this very first time relay.
2. control circuit as claimed in claim 1, it is characterized in that, this solenoid valve also is connected to the two ends of the coil of this very first time relay, when the coil of this very first time relay gets when electric, this solenoid valve enters conducting state, and when the coil losing electricity of this very first time relay, this solenoid valve enters cut-off state.
3. control circuit as claimed in claim 1 is characterized in that, also comprises:
One self-hold circuit couples this input power supply, in order to provide this input power supply to this cycle control circuit in this cycle T.T..
4. control circuit as claimed in claim 3 is characterized in that, this self-hold circuit comprises:
One power switch couples this input power supply;
One T.T. relay, couple this power switch, in order to set this cycle T.T.; And
One total work relay couples this an input power supply and a common electric potential, wherein,
In the conducting of the two ends of this power switch and in this cycle T.T., keep this self-hold circuit by this total work relay and be in current conductive state, to provide this input power supply to this cycle control circuit.
5. control circuit as claimed in claim 4 is characterized in that, this self-hold circuit also comprises:
In the conducting of the two ends of this power switch and through all after dates of this T.T., this self-hold circuit enters the current cut-off state and stops to provide this input power supply to this cycle control circuit.
6. control circuit as claimed in claim 4 is characterized in that, this self-hold circuit also comprises:
Second working relay couples this cycle control circuit, in order to provide this input power supply to this cycle control circuit by this second working relay.
7. control circuit as claimed in claim 6 is characterized in that, also comprises:
One switches switch, and this change-over switch is coupled between this second working relay and this cycle control circuit, wherein when the conducting of the two ends of this change-over switch, provides this input power supply to this cycle control circuit.
8. control circuit as claimed in claim 4 is characterized in that, also comprises:
One solenoid valve change-over switch is coupled between this solenoid valve and this relay T.T., in order to switch this solenoid valve and to be connected to the two ends of the coil of this relay T.T..
9. blowing device, this blowing device comprises:
One air strainer is in order to filtered air and generation blowing;
One solenoid valve couples this air strainer, in order to drive this air strainer when this solenoid valve conduction; And
One-period control circuit, receive an input power supply, and in cycle T.T. respectively according to the cycle very first time and second time cycle, with the making this solenoid valve conduction and end of correspondence, this cycle control circuit comprises:
Very first time relay couples this an input power supply and a common electric potential, in order to set this cycle very first time;
Second time relay couples this input power supply, this common electric potential, and this very first time relay, in order to set this second time cycle; And
First working relay couples this input power supply, this common electric potential, this very first time relay, and this second time relay, wherein
In this cycle very first time, current conductive state according to the contact of the contact of the contact of this very first time relay, this second time relay and this first working relay, the coil of this very first time relay is got, and in this second time cycle, according to the current conductive state of the contact of the contact of the contact of this very first time relay, this second time relay and this first working relay, make the coil losing electricity of this very first time relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710037922XA CN101261495B (en) | 2007-03-08 | 2007-03-08 | Blowing device and its control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710037922XA CN101261495B (en) | 2007-03-08 | 2007-03-08 | Blowing device and its control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101261495A CN101261495A (en) | 2008-09-10 |
| CN101261495B true CN101261495B (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710037922XA Expired - Fee Related CN101261495B (en) | 2007-03-08 | 2007-03-08 | Blowing device and its control circuit |
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| CN (1) | CN101261495B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104550123A (en) * | 2014-12-18 | 2015-04-29 | 成都主导科技有限责任公司 | Blower and brake shoe image acquisition device |
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| US5839455A (en) * | 1995-04-13 | 1998-11-24 | Texas Instruments Incorporated | Enhanced high pressure cleansing system for wafer handling implements |
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| CN2558648Y (en) * | 2002-06-14 | 2003-07-02 | 厦门大学 | Autocontrolling device for integral immersed membrane bioreator |
| CN1520940A (en) * | 2003-02-08 | 2004-08-18 | 广辉电子股份有限公司 | Liquid crystal display device units assembled automatic gas bath cleaning apparatus and method therefor |
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| CN1048940A (en) * | 1990-08-07 | 1991-01-30 | 江西省粮油科学技术研究所 | Micro computer controlling system for pulse cleaner |
| US5704990A (en) * | 1993-11-15 | 1998-01-06 | Zeppelin Schuettguttechnik Gmbh | Method of blowing conveying conduits free of material after conveyance |
| US5839455A (en) * | 1995-04-13 | 1998-11-24 | Texas Instruments Incorporated | Enhanced high pressure cleansing system for wafer handling implements |
| CN2508553Y (en) * | 2001-08-03 | 2002-09-04 | 王先运 | Intermittent automatic spray irrigating system controller |
| CN2558648Y (en) * | 2002-06-14 | 2003-07-02 | 厦门大学 | Autocontrolling device for integral immersed membrane bioreator |
| CN1520940A (en) * | 2003-02-08 | 2004-08-18 | 广辉电子股份有限公司 | Liquid crystal display device units assembled automatic gas bath cleaning apparatus and method therefor |
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| CN101261495A (en) | 2008-09-10 |
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