CN101469696A - Electrical controlled valve of variable displacement compressor - Google Patents
Electrical controlled valve of variable displacement compressor Download PDFInfo
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- CN101469696A CN101469696A CNA2007101733673A CN200710173367A CN101469696A CN 101469696 A CN101469696 A CN 101469696A CN A2007101733673 A CNA2007101733673 A CN A2007101733673A CN 200710173367 A CN200710173367 A CN 200710173367A CN 101469696 A CN101469696 A CN 101469696A
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Abstract
The present invention discloses an electrical controlled valve in discharge variable compressor, which includes: an electronic pressure sensor that sticks to the wall of the pressure sensor cavity and sense variation of air suction pressure, wherein leading-out wire of the electronic pressure sensor is directly or indirectly connected with winding wire of a electric solenoid; the electronic pressure sensor changes its electrical property according to sense variation value of air suction pressure so as to change electrical current value size on the electric solenoid, thereby changes electromagnetic force acted on the dynamic core. The linear degree controlled by the electronic pressure sensor as pressure sensing element replacing corrugated pipe of controlling jaw opening of the electrical controlled valve is relatively ideal. The linear control mode can make the electrical controlled valve respond to load variation more effective and changing of jaw opening of the valve rod makes discharge of the compressor controlled. Meanwhile, integrate the electronic pressure sensor inside the electrical controlled valve minimizes volume of the electrical controlled valve, reduces cost and difficulty of manufacturing and assembling similar corrugated pipe pressure sensing elements.
Description
Technical field
The present invention relates to the control technique of variable displacement compressor, more particularly, relate to the electrically-controlled valve of variable displacement compressor.
Background technique
Electrically-controlled valve is used for the control gear of variable displacement compressor more at present.This electrically-controlled valve changes the aperture of valve port by the variation of experiencing pressure of inspiration(Pi) Ps, thereby has changed the conducting degree of exhaust pressure Pd to cavity pressure Pc, controls the discharge capacity of compressor with this.Ps introduces compressor air suction pressure area 1, and Pd introduces Compressor Discharge Pressure district 2.Electrically-controlled valve is a displacement control valve, is used for adjusting the crank cavity pressure district Pc in the crank cavity pressure district 3 of compressor.This compressor comprises suction pressure region 1 and exhaust pressure district 2, and wherein the pressure of suction pressure region 1 is pressure of inspiration(Pi) Ps, and the pressure in exhaust pressure district 2 is exhaust pressure Pd.This control valve comprises valve rod 4, pressure responsive element 10 and solenoid 5.Pressure responsive element 10 is come mobile valve by induction pressure of inspiration(Pi) Ps, thereby the circulation area that changes valve port 12 is to change the flow of Pd to Pc, and the flow of Pd to Pc changes the variation in pressure that causes Pc.
By shown in Figure 5, in becoming the displacement piston compressor, the angle of inclination of the pressure reduction may command compressor slanting plate 32 of crank cavity pressure Pc and exhaust pressure Pd, under the constant situation of exhaust pressure Pd, by the big I that changes crank cavity pressure Pc the swash plate angle of compressor is adjusted, changed piston 31 strokes thus, made the discharge capacity of compressor obtain changing.
Fig. 1 shows and adopts the electrically-controlled valve sectional view of bellows as pressure responsive element 10 in the conventional art.In this electrically-controlled valve, energization solenoid 5 generates induction field to static iron core 6 and moving iron core 8 magnetization by the control electric current, thereby produce electromagnetic force between static iron core 6 and the moving iron core 8, because static iron core 6 is fastened on the valve body, therefore moving iron core 8 is subjected to electromagnetic force and drives the interior pulling valve rod 4 of valve.Moving iron core 8 can be free to slide in valve body.Be connected by a bar 14 between pressure element bellows 10 and the moving iron core 8.Answering spring 7 on the bar 14 once is fixed between the dynamic and static iron core.Between moving iron core 8 and the valve body air gap path 13 is arranged.Pressure of inspiration(Pi) Ps applies a power along the air gap path 13 between moving iron core 8 and valve body by 11 pairs of pressure-sensitive set of pieces of the pressure guiding channel bellows 10 on the electrically-controlled valve rear case after introducing from suction pressure region 1.Electromagnetic force on this power and the valve body is formed makes a concerted effort to control valve rod 4, changes the conducting degree between the exhaust pressure district 2 and crank cavity pressure district 3 in the electrically-controlled valve thus.Electromagnetic force is corresponding with the control size of current on supplying to solenoid 5, and this magnitude of current has determined the desired value of pressure of inspiration(Pi).When magnitude of current reduced, it is big that the aperture of electrically-controlled valve becomes.When not having electric current supply to solenoid 5, the aperture of valve will be set in a maximum value.During the elastic force balance of the elastic force of stressed, the returning spring 7 on the bellows 10 and electromagnetic force, electrically-controlled valve rear case inner spring 9, thereby can determine the conducting degree of exhaust pressure Pd and crank cavity pressure Pc to make Pc reach desired value.
In the above-mentioned electrically-controlled valve, the inside pressure element 10 of electrically-controlled valve is a bellows, 4 the stressed electromagnet pull F that is respectively moving iron core to valve rod on the valve rod
E, the directed force F behind the pressure P s that experiences on the bellows
b, returning spring is to the thrust F of valve rod
K1Elastic force F with electrically-controlled valve rear case spring
K2As shown in Figure 3, the size of these four power has determined the aperture of valve rod.Work as F
E++ F
K2F
b+ F
K1The time, the spring of electrically-controlled valve rear case is compressed, and promptly valve rod moves to the direction that valve closes.Otherwise valve rod then moves to the direction that valve leaves.When the electrically-controlled valve no electric circuit, the stressed F of bellows
bSpring force F with returning spring
K1All the time greater than the spring power F of valve rear case
K2In the drawings, the point of intersection of solenoid attraction force, rear case elastic force and bellows power, preloading spring power is an equilibrium position, and at this moment, the stroke of valve body is exactly the degree that valve is opened.On abscissa, promptly be the direction that valve closes on the left side of equinoctial point, be the direction that valve leaves on the right of equinoctial point.In the drawings, the size of electromagnetic force is also different under the different current value.Valve closed the change curve of direction power when figure center line a, b, c were different current values.
Bellows is as the pressure element in the electrically-controlled valve, its induction pressure of inspiration(Pi) Ps and change the decrement of bellows, thus change the spring force that acts on the valve rod, make the power on the valve rod reach new balance.Because Ps pressure is less, bellows interior generally needs vacuum setting to respond to Ps pressure, and therefore the tightness to bellows just has very high requirement, and also relatively more difficult to the processing of bellows, manufacture cost is also higher.
Summary of the invention
The present invention inserts a circuit loop and is used for controlling solenoidal effective current value in solenoid, this effective current value is directly responded to generation electromagnetic force Operating valve rod.The foregoing circuit loop mainly is made up of the pressure-sensitive circuit, the pressure-sensitive circuit is made up of the electron pressure sense cell that can experience pressure, as the electrodynamic type coil of piezoresistance, variable capacitance and band diaphragm etc., thereby replace mechanical type pressure element in the existing electrically-controlled valve, as bellows and diaphragm.
According to the present invention, a kind of electrically-controlled valve of variable displacement compressor is provided, comprising:
The electron pressure sense cell, the variation that places condensation of water vapor internal induction pressure, described electron pressure sense cell lighting outlet winds the line directly with solenoid or is connected indirectly; Described electron pressure sense cell changes self electric properties by the changing value of induction pressure, changes the size of current value on the solenoid thus, thereby changes the electromagnetic force that acts on the moving iron core.
Electrically-controlled valve also comprises: air intake passage is used to introduce pressure of inspiration(Pi) Ps; The exhaust passage is used to introduce exhaust pressure Pd; The cavity pressure passage is used to introduce crank cavity pressure Pc.
Described electrically-controlled valve also comprises: static iron core, be arranged under the described solenoid, and described static iron core is fixed in the valve body of electrically-controlled valve; Moving iron core is arranged under the described solenoid, and described moving iron core endwisely slips in valve body, does axial relative movement with described static iron core; Returning spring is arranged between static iron core and the moving iron core; Valve rod, an end are connected in described moving iron core, follow described moving iron core and move axially in valve body together; Pressure spring is connected between the other end and valve body of described valve rod; Valve is positioned on the described valve rod, corresponding to the position of electrically-controlled valve valve port; Wherein, the power that described pressure spring produces makes valve rod move towards the direction of cut-off valve, the power that described returning spring produces makes valve rod move towards the direction of opening of valves, and when solenoid was switched on, the electromagnetic force between described moving iron core and the static iron core made valve rod move towards the direction of cut-off valve.
Wherein, described solenoid is outer is sealed by non-magnet_conductible material.Described static iron core is fastenedly connected in steel bushing, be fixed in the valve body of electrically-controlled valve by described steel bushing, the centre of described static iron core has inner air path, and the position of corresponding described inner air path has aperture on the described steel bushing, thereby makes described inner air path be communicated to described condensation of water vapor; Have the gap between described moving iron core and the static iron core, form the air gap path, described air gap path is communicated with suction pressure region and described inner air path.The cross-section area of described valve is greater than the cross-section area of described valve port.
According to an embodiment, described electron pressure sense cell is a piezoresistance; The pressure of described electron pressure sense element senses is compressor air suction pressure P s.
If the electron pressure sense cell is indirect the connection with solenoid coiling Placement, can be connected with the solenoid coiling by a circuit.
The working principle of this electrically-controlled valve is as follows:
When solenoid is switched on, in solenoid, produce magnetic field by electromagnetic induction effect, this magnetic field produces axial electromagnetic force F to moving iron core
E, the direction of this power is the direction that valve cuts out, its size is relevant with the size of electrical current value Ie on the solenoid;
After air intake passage is introduced pressure of inspiration(Pi) Ps, pressure of inspiration(Pi) enters the inner air path of static iron core along the gas channels between moving iron core and the static iron core, enter into condensation of water vapor, piezoresistance is applied pressure of inspiration(Pi), when pressure of inspiration(Pi) is constant, the resistance value Rx of piezoresistance does not change, and energization solenoid remains on a steady state value to the electromagnetic force of dynamic and static iron core;
When pressure of inspiration(Pi) changes, piezoresistance changes the resistance value Rx of self by the changing value of induction pressure, change the size of current value on the solenoid thus, electromagnetic force on moving iron core is also changed accordingly, when the elastic force of the elastic force of electromagnetic force, returning spring and pressure spring reaches new balance, the aperture of valve rod will be maintained at a constant, make cavity pressure Pc controlled.
When the coiling of piezoresistance and solenoid directly is connected in parallel, when the elastic force of above-mentioned electromagnetic force, returning spring and the elastic force of pressure spring reach balance, meet:
Ie＝I＊Rs/(Rs+Rx)，F
E＝f(Ie)
Wherein, I is the control current value, and Rs is the solenoid resistance value, and Rx is a variable resistance, and Ie is the current value on the solenoid, F
EElectromagnetic force for moving iron core.Can find that electromagnetic force not only depends on the control current value, also depend on variable resistor Rx, be i.e. pressure of inspiration(Pi) Ps.
The variable effect of pressure of inspiration(Pi) Ps the resistance value of piezoresistance, changed the size of current value, thereby made the electromagnetic force on the valve rod controlled.The variation of pressure of inspiration(Pi) Ps is better to the variation Linearity of its resistance value because piezoresistance is experienced, and the elastic force of the elastic force of preloading spring and rear case spring is all relevant with the elasticity coefficient of its spring itself, and the size and the displacement of elastic force are linear change.Therefore, it is also very desirable to replace bellows to control the control Linearity of aperture of electrically-controlled valve as pressure element with piezoresistance.This linear control mode can make the more effective variation to load of electrically-controlled valve react, and the aperture that changes valve rod makes the discharge capacity of compressor controlled.Structurally,, piezoresistance is integrated in electrically-controlled valve inside, has reduced the volume of electrically-controlled valve, reduced cost and the difficulty making and assemble similar bellows pressure element by adjustment to pressure element.
Description of drawings
The above and other features of the present invention, character and advantage will become more obvious by the description below in conjunction with drawings and Examples, in the accompanying drawings, identical reference character is represented identical feature all the time, wherein:
Fig. 1 is the electrically-controlled valve sectional view of bellows as pressure element.
Fig. 2 adopts the electrically-controlled valve sectional view of piezoresistance as pressure element according to the present invention.
Fig. 3 is the position relation that is applied to load and threshold switch on the valve when bellows is as pressure element in the conventional art.
Fig. 4 is the position relation that is applied to load and threshold switch on the valve when adopting piezoresistance as pressure element according to the present invention.
Fig. 5 shows the schematic representation that changes the swash plate inclined degree by pressure difference.
Embodiment
The present invention is used for controlling solenoidal effective current value by insert a circuit loop in solenoid, and this effective current value is directly responded to generation electromagnetic force Operating valve rod.The foregoing circuit loop mainly is made up of the pressure-sensitive circuit, the pressure-sensitive circuit is made up of the electron pressure sense cell that can experience pressure, as the electrodynamic type coil of piezoresistance, variable capacitance and band diaphragm etc., thereby replace mechanical type pressure element in the existing electrically-controlled valve, as bellows and diaphragm.When the size variation of induction pressure, the pressure-sensitive electronic component changes self characteristics by the variation of induction pressure, change the size of electromagnetic force again by the size of current value in the pressure-sensitive circuit change solenoid, the equilibrium of forces point of control valve rod makes the aperture of valve rod controlled.Finally reach the purpose of the control valve throw of lever, thereby make the discharge capacity of compressor controlled.
Fig. 2 adopts the electrically-controlled valve sectional view of piezoresistance as the electron pressure pressure element according to the present invention.As shown in Figure 2, air intake passage 24 is introduced pressure of inspiration(Pi) Ps, and exhaust pressure Pd is introduced in exhaust passage 25, and cavity pressure passage 26 is introduced crank cavity pressure Pc.
This electrically-controlled valve comprises solenoid 21, valve rod 23 and piezoresistance 212.Solenoid 21 is outer by non-magnet_conductible material 22 sealings.Ring-like solenoid 21 has static iron core 28 and moving iron core 29.Static iron core 28 is fastenedly connected with steel bushing 218, leans on returning spring 210 to be connected between static iron core 28 and the moving iron core 29.Moving iron core 29 can be free to slide in valve body.When not having electric current to pass through on the solenoid 21, returning spring 210 has a pretension decrement to guarantee that valve port 217 remains on open mode.Having at moving iron core 29 tops one can axially movable valve rod 23, and these valve rod 23 ends are connected with the pressure spring 27 of electrically-controlled valve end, and the other end cooperates with moving iron core 29.Pressure spring 27 is fastenedly connected with the electrically-controlled valve end.Pressure spring 27 Operating valves are towards the direction motion of closing, and returning spring 210 Operating valves are towards the direction motion of opening, and moving iron core 29 active forces are the direction that valve cuts out.The area of the sectional area ratio valve port 217 of valve 219 is big, guaranteeing under the state that valve closes, and can not conducting between the internal force Pc in exhaust pressure Pd and the chamber.
After pressure of inspiration(Pi) Ps is introduced by air intake passage 24, by inner air path passage 214 conducting pressures of the air gap path 215 between dynamic and static iron core via static iron core 28.Not magnetic conduction steel bushing 218 is arranged outside static iron core 28, in steel bushing 218 bottoms aperture 216 is arranged, by the aperture 216 of steel bushing 218 bottoms, air-breathing Ps can form Ps condensation of water vapor 211 in the electrically-controlled valve rear case, and piezoresistance 212 is affixed on the variation of induction pressure of inspiration(Pi) Ps on the wall of chamber.Piezoresistance lighting outlet 213 is connected in parallel with solenoid 21 coilings.In this embodiment, the piezoresistance as electron pressure induction original paper is directly in parallel with solenoidal coiling.Need to prove,, be connected such as winding the line with solenoid by a circuit if the element that adopts other as the electron pressure sense cell, also can be indirect with solenoid coiling Placement so.
When solenoid 21 energisings,, can in solenoid 21, produce magnetic field by electromagnetic induction effect.This magnetic field produces axial electromagnetic force F to moving iron core 29
EThe direction of this power is identical with the direction that valve closes, and its size is relevant with the size of electrical current value Ie on the solenoid 21.After air intake passage 24 was introduced pressure of inspiration(Pi) Ps, pressure of inspiration(Pi) entered the inner air path 214 of static iron core along moving iron core 29 and the gas channels 215 between the static iron core 28, at the rear case formation Ps of electrically-controlled valve pressure chamber, piezoresistance is applied pressure of inspiration(Pi).When pressure of inspiration(Pi) was constant, the resistance value Rx of piezoresistance did not change.Energization solenoid remains on a steady state value to the electromagnetic force of dynamic and static iron core.When pressure of inspiration(Pi) changed, piezoresistance 212 changed self resistance value Rx by the changing value of induction pressure, changed the size of current value on the solenoid 21 thus, and the electromagnetic force on moving iron core 29 is also changed accordingly.When the elastic force of the elastic force of electromagnetic force, returning spring 210 and pressure spring 27 reaches new balance, the aperture of valve rod will be maintained at a constant, make cavity pressure Pc controlled.Wherein, correlation formula is as follows:
Ie＝I＊Rs/(Rs+Rx)，F
E＝f(Ie)
I is the control current value, and Rs is the solenoid resistance value, and Rx is a variable resistance, and Ie is the current value on the solenoid, F
EElectromagnetic force for moving iron core.Can find that electromagnetic force not only depends on the control current value, also depend on variable resistor Rx, be i.e. pressure of inspiration(Pi) Ps.
The present invention has replaced original pressure element bellows with piezoresistance.Piezoresistance is experienced the resistance value of the variation change self of pressure of inspiration(Pi) Ps value, reaches the size of regulating electrical current value on the solenoid.At this moment the power that is subjected on the valve rod is electromagnetic force F
E(R) returning spring is to the thrust F of valve rod
K1Elastic force F with electrically-controlled valve rear case spring
K2Work as F
E(R)+F
K2F
K1The time, the spring of electrically-controlled valve rear case is compressed, and promptly valve rod moves to the direction that valve closes.Otherwise valve rod then moves to the direction that valve leaves.When the electrically-controlled valve no electric circuit, the spring force F of returning spring
K1All the time greater than the spring power F of valve rear case
K2As shown in Figure 4, the point of intersection of solenoid attraction force, rear case elastic force and returning spring power is an equilibrium position, and the stroke of valve body is exactly the total amount that electrically-controlled valve is opened.On abscissa, promptly be the direction that valve closes on the left side of equinoctial point, be the direction that valve leaves on the right of equinoctial point.In the drawings, the size of electromagnetic force is also different under the different current values, and valve closed the change curve of direction power when figure center line a, b, b were different current values, according to four different control electric currents, and this four dotted lines and F
K1Four intersection points represent electrically-controlled valve valve rod four different equinoctial points, i.e. four of valve port apertures under the constant situation of piezoresistance value.
The variable effect of pressure of inspiration(Pi) Ps the resistance value of piezoresistance, changed the size of current value, thereby made the electromagnetic force on the valve rod controlled.The variation of pressure of inspiration(Pi) Ps is better to the variation Linearity of its resistance value because piezoresistance is experienced, and the elastic force of the elastic force of preloading spring and rear case spring is all relevant with the elasticity coefficient of its spring itself, and the size and the displacement of elastic force are linear change.Therefore, it is also very desirable to replace bellows to control the control Linearity of aperture of electrically-controlled valve as pressure element with piezoresistance.This linear control mode can make the more effective variation to load of electrically-controlled valve react, and the aperture that changes valve rod makes the discharge capacity of compressor controlled.Structurally,, piezoresistance is integrated in electrically-controlled valve inside, has reduced the volume of electrically-controlled valve, reduced cost and the difficulty making and assemble similar bellows pressure element by adjustment to pressure element.The installation position of piezoresistance and Placement are not limited in the present embodiment, can think that so long as can experience the position of pressure of inspiration(Pi) and all fall in the claim of the present invention, the resistance Placement that can realize Current Control is also all in claim of the present invention.
Though embodiment described above describes with the example of piezoresistance as the electron pressure sense cell, but those skilled in the art is to be understood that, use other element, electrodynamic type coil such as variable capacitance and band diaphragm also can be realized the present invention, though circuit structure can be slightly different, do not break away from essential idea of the present invention.The foregoing description provides to being familiar with the person in the art and realizes or use of the present invention; those skilled in the art can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (10)
1. the electrically-controlled valve of a variable displacement compressor is characterized in that, comprising:
The electron pressure sense cell, the variation that places condensation of water vapor internal induction pressure, described electron pressure sense cell lighting outlet winds the line directly with solenoid or is connected indirectly;
Described electron pressure sense cell changes self electric properties by the changing value of induction pressure, changes the size of current value on the solenoid thus, thereby changes the electromagnetic force that acts on the moving iron core.
2. the electrically-controlled valve of variable displacement compressor as claimed in claim 1 is characterized in that, described electrically-controlled valve comprises:
Air intake passage is used to introduce pressure of inspiration(Pi) Ps;
The exhaust passage is used to introduce exhaust pressure Pd;
The cavity pressure passage is used to introduce crank cavity pressure Pc.
3. the electrically-controlled valve of variable displacement compressor as claimed in claim 2 is characterized in that, described electrically-controlled valve comprises:
Static iron core is arranged under the described solenoid, and described static iron core is fixed in the valve body of electrically-controlled valve;
Moving iron core is arranged under the described solenoid, and described moving iron core endwisely slips in valve body, does axial relative movement with described static iron core;
Returning spring is arranged between static iron core and the moving iron core;
Valve rod, an end are connected in described moving iron core, follow described moving iron core and move axially in valve body together;
Pressure spring is connected between the other end and valve body of described valve rod;
Valve is positioned on the described valve rod, corresponding to the position of electrically-controlled valve valve port;
Wherein, the power that described pressure spring produces makes valve rod move towards the direction of cut-off valve, the power that described returning spring produces makes valve rod move towards the direction of opening of valves, and when solenoid was switched on, the electromagnetic force between described moving iron core and the static iron core made valve rod move towards the direction of cut-off valve.
4. the electrically-controlled valve of variable displacement compressor as claimed in claim 3 is characterized in that,
Described solenoid is outer to be sealed by non-magnet_conductible material.
5. the electrically-controlled valve of variable displacement compressor as claimed in claim 3 is characterized in that,
Described static iron core is fastenedly connected in steel bushing, be fixed in the valve body of electrically-controlled valve by described steel bushing, the centre of described static iron core has inner air path, and the position of corresponding described inner air path has aperture on the described steel bushing, thereby makes described inner air path be communicated to described condensation of water vapor;
Have the gap between described moving iron core and the static iron core, form the air gap path, described air gap path is communicated with suction pressure region and described inner air path.
6. the electrically-controlled valve of variable displacement compressor as claimed in claim 3 is characterized in that,
The cross-section area of described valve is greater than the cross-section area of described valve port.
7. as the electrically-controlled valve of each described variable displacement compressor among the claim 1-6, it is characterized in that,
Described electron pressure sense cell is a piezoresistance;
The pressure of described electron pressure sense element senses is compressor air suction pressure P s.
8. the electrically-controlled valve of variable displacement compressor as claimed in claim 7 is characterized in that,
Described electron pressure sense cell is to be connected with the solenoid coiling by a circuit with solenoid coiling Placement.
9. the electrically-controlled valve of variable displacement compressor as claimed in claim 7 is characterized in that,
When solenoid is switched on, in solenoid, produce magnetic field by electromagnetic induction effect, this magnetic field produces axial electromagnetic force FE to moving iron core, and the direction of this power is the direction that valve cuts out, and the size of electrical current value Ie is relevant on its size and the solenoid;
After air intake passage is introduced pressure of inspiration(Pi) Ps, pressure of inspiration(Pi) enters the inner air path of static iron core along the gas channels between moving iron core and the static iron core, enter into condensation of water vapor, piezoresistance is applied pressure of inspiration(Pi), when pressure of inspiration(Pi) is constant, the resistance value Rx of piezoresistance does not change, and energization solenoid remains on a steady state value to the electromagnetic force of dynamic and static iron core;
When pressure of inspiration(Pi) changes, piezoresistance changes the resistance value Rx of self by the changing value of induction pressure, change the size of current value on the solenoid thus, electromagnetic force on moving iron core is also changed accordingly, when the elastic force of the elastic force of electromagnetic force, returning spring and pressure spring reaches new balance, the aperture of valve rod will be maintained at a constant, make cavity pressure Pc controlled.
10. the electrically-controlled valve of variable displacement compressor as claimed in claim 9 is characterized in that, when the coiling of piezoresistance and solenoid directly is connected in parallel, when the elastic force of electromagnetic force, returning spring and the elastic force of pressure spring reach balance, meets:
Ie＝I＊Rs/(Rs+Rx)，F
E＝f(Ie)
Wherein, I is the control current value, and Rs is the solenoid resistance value, and Rx is a variable resistance, and Ie is the current value on the solenoid, F
EElectromagnetic force for moving iron core.Can find that electromagnetic force not only depends on the control current value, also depend on variable resistor Rx, be i.e. pressure of inspiration(Pi) Ps.
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| CNA2007101733673A CN101469696A (en) | 2007-12-27 | 2007-12-27 | Electrical controlled valve of variable displacement compressor |
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| CNA2007101733673A CN101469696A (en) | 2007-12-27 | 2007-12-27 | Electrical controlled valve of variable displacement compressor |
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Cited By (6)
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| CN105041630A (en) * | 2015-07-08 | 2015-11-11 | 浙江三花汽车零部件有限公司 | Electromagnetic control valve for variable displacement compressor |
| CN107178492A (en) * | 2016-03-11 | 2017-09-19 | 浙江三花汽车零部件有限公司 | The control valve of variable compressor |
| CN108052062A (en) * | 2017-12-15 | 2018-05-18 | 贵州新安航空机械有限责任公司 | The assembling device and its assembly method of a kind of static iron core of electromagnetic valve |
| CN108691750A (en) * | 2017-04-07 | 2018-10-23 | 株式会社Tgk | Control valve for variable displacement compressor |
| CN109442068A (en) * | 2018-12-29 | 2019-03-08 | 绵阳富临精工机械股份有限公司 | A kind of automatically controlled valve arrangement with exhaust passage |
| CN113550801A (en) * | 2021-08-17 | 2021-10-26 | 南京久鼎制冷空调设备有限公司 | CO with turbine expansion mechanism2Refrigeration piston compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105041630A (en) * | 2015-07-08 | 2015-11-11 | 浙江三花汽车零部件有限公司 | Electromagnetic control valve for variable displacement compressor |
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| CN108691750A (en) * | 2017-04-07 | 2018-10-23 | 株式会社Tgk | Control valve for variable displacement compressor |
| CN108691750B (en) * | 2017-04-07 | 2021-06-22 | 株式会社Tgk | Control valve for variable displacement compressor |
| CN108052062A (en) * | 2017-12-15 | 2018-05-18 | 贵州新安航空机械有限责任公司 | The assembling device and its assembly method of a kind of static iron core of electromagnetic valve |
| CN109442068A (en) * | 2018-12-29 | 2019-03-08 | 绵阳富临精工机械股份有限公司 | A kind of automatically controlled valve arrangement with exhaust passage |
| CN109442068B (en) * | 2018-12-29 | 2024-04-26 | 绵阳富临精工机械股份有限公司 | Electric control valve structure with exhaust channel |
| CN113550801A (en) * | 2021-08-17 | 2021-10-26 | 南京久鼎制冷空调设备有限公司 | CO with turbine expansion mechanism2Refrigeration piston compressor |
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Application publication date: 20090701 |