CN201588995U - Electrical control valve - Google Patents
Electrical control valve Download PDFInfo
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- CN201588995U CN201588995U CN2009202865509U CN200920286550U CN201588995U CN 201588995 U CN201588995 U CN 201588995U CN 2009202865509 U CN2009202865509 U CN 2009202865509U CN 200920286550 U CN200920286550 U CN 200920286550U CN 201588995 U CN201588995 U CN 201588995U
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Abstract
The utility model discloses an electrical control valve which controls the capacity of a swash plate type compressor. The electrical control valve comprises a pressure sensing element, a solenoid coil, a valve body and a valve cavity with a valve port, wherein the pressure sensing element and the solenoid coil are respectively arranged at two ends of the electrical control valve; the valve body is arranged between the pressure sensing element and the solenoid coil; a first valve rod is used for transmission between the valve body and the pressure sensing element; a second valve rod is used for transmission between the valve body and the solenoid coil; the valve cavity with the valve port is communicated with an exhaust cavity and a swash plate cavity; the valve body is contained in the valve cavity; the valve body moves in the valve cavity for changing the opening of the valve port; the valve body moves in the moving area of the valve cavity; and in the moving area, the valve body is not contacted with the end surface of the valve port. The gap provided between the valve body and the valve port is small, even if the solenoid coil is excited by larger current, and a movable iron core is quickly actuated with a static iron core, the valve body is impossibly collided with the end part of the valve port, thus preventing the valve body and the valve rods from being damaged.
Description
Technical field
The utility model relates to the parts of the oblique tray type compressor of volume-variable, more particularly, relates to a kind of electrically-controlled valve that is used to control the oblique tray type compressor capacity.
Background technique
Be used for automobile air-conditioning refrigeration circuit compressor by engine-driving, the rotating speed of motor changes according to the motion state of automobile.Adopt the oblique tray type compressor of the volume-variable of variable refrigerant discharge capacity, can under the situation of engine idle, obtain enough refrigerating capacitys.Fig. 1 has disclosed the structure of the oblique tray type compressor of volume-variable.As shown in Figure 1, in the oblique tray type compressor of volume-variable, main shaft 16 is under the driving of motor, the linkage 19 and the swash plate 18 that drive in the crankshaft cavity 15 (being Pc) rotate simultaneously, and when swash plate has an angle (as the position of dotted line indication), piston 21 is reciprocating with the rotation of swash plate, refrigerant in the air aspiration cavity 22 (being Ps) is sucked, compressed, be discharged in the exhaust cavity 23 (being Pd), be discharged to then in the air-conditioning refrigeration loop.
Changing the oblique tray type compressor capacity, thereby to reach the step of control air-conditioning refrigerating capacity roughly as follows: when true temperature in the car and target temperature differ greatly, sensor sends signal to computer, executive program, change the driving current of (as increasing) electrically-controlled valve 34, the stressed change of valve body, opening area changes (as make access portal reduces to minimum between Pd and the Pc), relative compression cylinder, the pressure in Pc chamber reduces, thereby the swash plate angle increases, and refrigerating capacity increases.
The patent No. is to have disclosed a kind of structure of electrically-controlled valve for the Chinese patent of CN1081744C (March 27 2002 day for announcing) CN97109639.2, notice of authorization number.Fig. 2 has disclosed the electrically-controlled valve that CN97109639.2 proposed.As shown in Figure 2, two of valve pocket 63 is provided with pressure pressure-sensitive chamber 68 and solenoid 62.Valve pocket 63 is communicated with exhaust cavity by passage 67, and valve opening 66 communicates with swash plate chamber by passage 75, and the bellows 70 in the pressure-sensitive chamber is experienced air aspiration cavity pressure by passage 69, acts on first valve rod 74 simultaneously.When the solenoid link electric current, static iron core 77 produces electromagnetic force and acts on moving iron core 79, and the two produces adhesive, thereby an end that drives second valve rod 82 moves, valve body 64 is located in the valve pocket, and the direction that second valve rod, 82 drive valve bodies 64 are closed towards valve opening 66 moves, and makes between swash plate chamber and the exhaust cavity and cuts off.When solenoid cut off the power supply, the suction-combining force disappeared between static iron core 77 and the moving iron core 79, and under the effect of spring 65, valve opening 66 is opened, and connects between swash plate chamber and the exhaust cavity.
Because sucting speed is exceedingly fast between moving iron core 79 and the static iron core 77, moment is closed, therefore also moment disconnects between exhaust cavity and the swash plate chamber, flow of refrigerant between exhaust cavity and the swash plate chamber directly reduces to zero from Peak Flow Rate, and this is unfavorable for the stability of swash plate chamber variation in pressure and air-flow; In addition, valve body 64 and 66 moments of valve opening produce impact between the two when closing, and surface of contact easily produces damage, and the position that valve rod is thinner easily produces bending deflection.
The model utility content
The utility model aim to provide a kind of make in the oblique tray type compressor the swash plate chamber variation in pressure steadily, during motion impact force little, prevent the electrically-controlled valve that internal structure is impaired.
According to an embodiment, a kind of electrically-controlled valve is proposed, the capacity of this electrically-controlled valve control oblique tray type compressor, this electrically-controlled valve comprises:
Pressure element and solenoid, pressure element and solenoid are separately positioned on the two ends of electrically-controlled valve;
Valve body is arranged between pressure element and the solenoid, by the first valve rod transmission, passes through the second valve rod transmission between valve body and the solenoid between valve body and the pressure element;
Valve pocket with valve opening, valve pocket is communicated with exhaust cavity and swash plate chamber, and valve pocket holds valve body, and valve body moves the aperture that changes valve opening in valve pocket;
Move in the moving area of valve body in valve pocket, in moving area, valve body does not contact with the valve opening end face.
In one embodiment, valve body has a stepped part, and a spring is arranged between this stepped part and the valve opening end face.Minimum range between valve body and the valve opening end face is 0.05mm～0.12mm.
In one embodiment, valve opening is positioned at the top of valve pocket and is communicated with valve pocket, is linked to each other by passage between valve opening and the exhaust cavity, links to each other by passage between valve pocket and the swash plate chamber; Valve body is arranged in the valve pocket, and valve body is away from valve opening, and valve opening has the big amplitude of opening, and valve body is near valve opening, and valve opening has the little amplitude of opening.
In one embodiment, pressure element comprises:
The pressure-sensitive chamber, the pressure-sensitive chamber is surrounded by housing and cover body, and cover body is provided with the passage that communicates with the compressor air suction chamber;
Bellows is arranged in the pressure-sensitive chamber, and the bellows upper end is fixed on cover body inside, and the lower end is unsettled.
First valve rod is arranged between valve body and the bellows, and first valve rod slides in the chute of bellows.
In one embodiment, solenoid comprises:
Field coil, the field coil center fixation has static iron core, and the static iron core below is provided with moving iron core.
Second valve rod is arranged between valve body and the solenoid, and second valve rod is fixed on the moving iron core.
Form auxiliary valve pocket in the static iron core, this auxiliary valve pocket communicates with valve pocket by the passage on the guide piston;
Form auxiliary valve opening in the moving iron core, in the auxiliary valve opening auxiliary valve body is set, auxiliary valve body and valve body are fixed together, and auxiliary valve body moves the aperture that changes auxiliary valve opening in auxiliary valve opening.
The working procedure of electrically-controlled valve of the present utility model is as follows: when the tide of motorism load is very big, temperature in the car is higher than the target temperature that will regulate, the computer order circuit makes the solenoid excitation, the suction-combining force of moving iron core and static iron core overcomes the power of pressure element, second valve rod promotes the direction motion of valve body towards close valve orifice, when moving to the complete adhesive of dynamic and static iron core, the end face of valve body and valve opening still has a micro-gap, and a spot of gas still can enter swash plate chamber through this gap from exhaust cavity.Owing to there are some spaces between swash plate chamber and the air aspiration cavity, between bearing roller, the gas of swash plate chamber can slowly be flowed, to air aspiration cavity because the existence of micro-gap, the air-flow of exhaust cavity also can enter swash plate chamber slightly, therefore can slow down the speed that swash plate chamber pressure diminishes.When swash plate chamber pressure diminished, it is big that the angle of swash plate becomes, thereby swash plate chamber pressure slowly diminishes, and it is also more slow that the swash plate angle becomes big speed.Because the existence of micro-gap, though solenoid with big current excitation, during adhesive, valve body and valve opening end also can not bump, and prevent that valve body and valve rod are impaired when moving iron core and static iron core were quick.
Description of drawings
The above and other feature of the present utility model, 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 has disclosed the structure of the oblique tray type compressor of volume-variable.
Fig. 2 has disclosed the structure of the electrically-controlled valve that CN97109639.2 proposed.
Fig. 3 has disclosed the structure according to an embodiment's of the present utility model electrically-controlled valve.
Structure during the dynamic and static iron core adhesive of electrically-controlled valve that Fig. 4 has disclosed embodiment shown in Figure 3.
Embodiment
The utility model proposes a kind of electrically-controlled valve, the capacity of this electrically-controlled valve control oblique tray type compressor, this electrically-controlled valve comprises:
Pressure element and solenoid, pressure element and solenoid are separately positioned on the two ends of electrically-controlled valve;
Valve body is arranged between pressure element and the solenoid, by the first valve rod transmission, passes through the second valve rod transmission between valve body and the solenoid between valve body and the pressure element;
Valve pocket with valve opening, valve pocket is communicated with exhaust cavity and swash plate chamber, and valve pocket holds valve body, and valve body moves the aperture that changes valve opening in valve pocket;
Move in the moving area of valve body in valve pocket, in moving area, valve body does not contact with the valve opening end face.
In one embodiment, valve body has a stepped part, and a spring is arranged between this stepped part and the valve opening end face.Minimum range between valve body and the valve opening end face is 0.05mm～0.12mm.
In one embodiment, valve opening is positioned at the top of valve pocket and is communicated with valve pocket, is linked to each other by passage between valve opening and the exhaust cavity, links to each other by passage between valve pocket and the swash plate chamber; Valve body is arranged in the valve pocket, and valve body is away from valve opening, and valve opening has the big amplitude of opening, and valve body is near valve opening, and valve opening has the little amplitude of opening.
In one embodiment, pressure element comprises: pressure-sensitive chamber and bellows.The pressure-sensitive chamber is surrounded by housing and cover body, and cover body is provided with the passage that communicates with the compressor air suction chamber.Bellows is arranged in the pressure-sensitive chamber, and the bellows upper end is fixed on cover body inside, and the lower end is unsettled.First valve rod is arranged between valve body and the bellows, and first valve rod slides in the chute of bellows.
In one embodiment, solenoid comprises field coil, and the field coil center fixation has static iron core, and the static iron core below is provided with moving iron core.Second valve rod is arranged between valve body and the solenoid, and second valve rod is fixed on the moving iron core.Form auxiliary valve pocket in the static iron core, this auxiliary valve pocket communicates with valve pocket by the passage on the guide piston.Form auxiliary valve opening in the moving iron core, in the auxiliary valve opening auxiliary valve body is set, auxiliary valve body and valve body are fixed together, and auxiliary valve body moves the aperture that changes auxiliary valve opening in auxiliary valve opening.
Fig. 3 has disclosed the structure according to an embodiment's of the present utility model electrically-controlled valve.As shown in Figure 3, an end of electrically-controlled valve 1 is pressure-sensitive chamber 10, and pressure-sensitive chamber 10 is surrounded by housing 11 and cover body 12.Cover body 12 is provided with the passage 13 that communicates with the compressor air suction chamber.Be provided with bellows 14 in the pressure-sensitive chamber 10, these bellows 14 upper ends are fixed on cover body 12 inside, and the lower end is unsettled, and when pressure of inspiration(Pi) Ps increased, bellows shrank on 14 lower ends, and when pressure-sensitive chamber 10 pressure reduced, bellows 14 trailed downwards.
The other end of electrically-controlled valve 1 is a solenoid 20, and solenoid 20 comprises field coil 27, and field coil 27 center fixation have static iron core 28, and static iron core 28 belows are provided with moving iron core 29, and when field coil 27 carried out excitation, static iron core 28 attracted moving iron core 29 to move up.Form valve pocket 30 by shell 11 between solenoid 20 and the pressure-sensitive chamber 10, valve pocket 30 tops are provided with valve opening 31, are linked to each other by passage 32 between valve opening 31 and the compressor discharge chamber.Link to each other by passage 33 between valve pocket 30 and the swash plate chamber, establish valve body 34 in the valve pocket 30, valve body 34 is during away from valve opening 31, and it is bigger that valve opening 31 is opened amplitude, so the gas Pd of exhaust cavity enters swash plate chamber morely swash plate chamber pressure P c is faster increased.
Valve body 34 is provided with a stepped part 34A, and a spring 35 is installed between stepped part 34A and the valve opening end face, but limiting valve body 34 upward speed, also can be when compressor quit work, valve body 34, moving iron core 29 are opened, prevent adhesion.Transmit axial force by first valve rod 24 between valve body 34 and the bellows 14, first valve rod 24 can slide in the chute 14A of bellows 14, and bellows 14 promotes first valve rod 24 when stretching, and then first valve rod 24 promotes valve body 34 downwards.Transmit axial force by second valve rod 26 between valve body 34 and the solenoid 20, second valve rod 26 is fixed on the moving iron core 29, when moving iron core 29 is subjected to the attraction force of static iron core 28, passes to the power of valve body 34 towards the motion of valve opening 31 directions.With reference to shown in Figure 4, the structure during the dynamic and static iron core adhesive of electrically-controlled valve that Fig. 4 has disclosed embodiment shown in Figure 3.As Fig. 4, when moving iron core 28 and static iron core 29 adhesives, valve body 34 moves to topmost, and remain at a micro-gap δ between valve body 34 and the valve opening 31 this moment, and this micro-gap δ is 0.05～0.12mm.This moment first valve rod 24 and valve opening 31 the aperture between gap delta
1Be less than or equal to gap delta, so the gas Pd of exhaust cavity need pass through gap delta
1With just can enter swash plate chamber Pc after twice throttling of gap delta.And when valve opening 31 open-widths are maximum, as shown in Figure 3, the gap delta between this moment first valve rod 24 and valve opening 31 apertures
2Greater than gap delta
1
Also form auxiliary valve pocket 25 in the static iron core 28, this auxiliary valve pocket 25 communicates with valve pocket 30 by the passage 38A on the guide piston 38, and the pressure in this auxiliary valve pocket 25 approaches swash plate chamber pressure P c.The pressure of inspiration(Pi) Ps of the auxiliary valve opening 37 introducing compressors in being located at moving iron core 28 of the passage 17 on the housing 11 from pressure-sensitive chamber 10.The valve body 34 and second valve rod 26 can be provided with auxiliary valve body 36, and this auxiliary valve body 36 is fixed together with valve body 34.Auxiliary valve body 36 is used to change the unlatching size of auxiliary valve opening 37.Auxiliary valve opening 37 and passage 17 are connected.
The working procedure of Fig. 3 and embodiment's shown in Figure 4 electrically-controlled valve, the process of promptly controlling the oblique tray type compressor capacity is as follows:
When compartment temperature during near the target temperature regulated, cooling load is very little, and this moment pressure of inspiration(Pi) Ps and exhaust pressure Pd all excessive; C is too small for the swash plate chamber pressure P, and the swash plate angle is excessive, and bellows shrinks, and valve body is not had axial force, and valve body is in the position near valve opening.For emission reduction, need valve opening is opened into maximum.Therefore the instruction of external control unit disconnects the electric current of coil, and the suction-combining force between the dynamic and static iron core disappears, and valve body opens to maximum following the beating of the effect of spring with valve opening, and the refrigerant flow that enters swash plate chamber from exhaust cavity increases; Assist the aperture minimum of valve opening simultaneously, the refrigeration agent that flows to air aspiration cavity from swash plate chamber reduces, and the gas pressure of swash plate chamber is increased quickly, and the swash plate angle reduces, and reaches the purpose that reduces discharge capacity.
When compartment temperature higher, when cooling load is big, the discharge capacity deficiency, pressure of inspiration(Pi) Ps is less, and this moment, bellows was in extended configuration, valve body was applied the power of opening direction one day, generally can overcome the suction-combining force of dynamic and static iron core when this power is excessive, valve body is opened to maximum.In order to increase discharge capacity, the swash plate angle is increased, the instruction of external control unit increases the electric current of coil, and the power and the spring force that make the suction-combining force between the dynamic and static iron core overcome bellows promote valve body to the direction motion that reduces the valve opening aperture.The aperture of valve opening reaches and reduces, and the refrigerant flow that enters swash plate chamber from exhaust cavity reduces; The aperture of auxiliary valve opening increases simultaneously, and the refrigeration agent that flows into air aspiration cavity from swash plate chamber increases, and swash plate chamber pressure is reduced, and the swash plate angle increases, and reaches the purpose that increases discharge capacity.
When compressor just starts, because the Operating valve body of spring opens to maximum with valve opening, swash plate angle minimum, near zero, compressor displacement is near zero, and bellows is in extended configuration, needs to increase fast the swash plate angle.Therefore the control unit instruction gives coil one big electric current, and the promotion valve body is opened valve opening and reduced to minimum, and auxiliary simultaneously valve opening aperture increases to maximum, and the angle of swash plate can increase fast in this case, so that refrigerating capacity reaches requirement.
Because the existence of micro-gap can not produce collision between valve body and the valve opening, when especially compressor has just started, has effectively protected valve body and valve rod not impaired, increased electrically-controlled valve working life.
The working procedure of electrically-controlled valve of the present utility model is as follows: when the tide of motorism load is very big, temperature in the car is higher than the target temperature that will regulate, the computer order circuit makes the solenoid excitation, the suction-combining force of moving iron core and static iron core overcomes the power of pressure element, second valve rod promotes the direction motion of valve body towards close valve orifice, when moving to the complete adhesive of dynamic and static iron core, the end face of valve body and valve opening still has a micro-gap, and a spot of gas still can enter swash plate chamber through this gap from exhaust cavity.Owing to there are some spaces between swash plate chamber and the air aspiration cavity, between bearing roller, the gas of swash plate chamber can slowly be flowed, to air aspiration cavity because the existence of micro-gap, the air-flow of exhaust cavity also can enter swash plate chamber slightly, therefore can slow down the speed that swash plate chamber pressure diminishes.When swash plate chamber pressure diminished, it is big that the angle of swash plate becomes, thereby swash plate chamber pressure slowly diminishes, and it is also more slow that the swash plate angle becomes big speed.Because the existence of micro-gap, though solenoid with big current excitation, during adhesive, valve body and valve opening end also can not bump, and prevent that valve body and valve rod are impaired when moving iron core and static iron core were quick.
The foregoing description provides to being familiar with the person in the art and realizes or use of the present utility model; those skilled in the art can be under the situation that does not break away from model utility thought of the present utility model; the foregoing description is made various modifications or variation; thereby protection domain of the present utility model do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (9)
1. electrically-controlled valve, the capacity of control oblique tray type compressor, this electrically-controlled valve comprises:
Pressure element and solenoid, pressure element and solenoid are separately positioned on the two ends of electrically-controlled valve;
Valve body is arranged between pressure element and the solenoid, by the first valve rod transmission, passes through the second valve rod transmission between valve body and the solenoid between valve body and the pressure element;
Valve pocket with valve opening, valve pocket is communicated with exhaust cavity and swash plate chamber, and valve pocket holds described valve body, and valve body moves the aperture that changes valve opening in valve pocket;
It is characterized in that,
Move in the moving area of valve body in valve pocket, in described moving area, valve body does not contact with the valve opening end face.
2. electrically-controlled valve as claimed in claim 1 is characterized in that,
Described valve body has a stepped part, and a spring is arranged between this stepped part and the valve opening end face.
3. electrically-controlled valve as claimed in claim 2 is characterized in that,
Minimum range between described valve body and the valve opening end face is 0.05mm～0.12mm.
4. electrically-controlled valve as claimed in claim 1 is characterized in that,
Described valve opening is positioned at the top of valve pocket and is communicated with valve pocket, is linked to each other by passage between valve opening and the exhaust cavity, links to each other by passage between valve pocket and the swash plate chamber;
Described valve body is arranged in the valve pocket, and valve body is away from valve opening, and valve opening has the big amplitude of opening, and the gap between the valve opening aperture and first valve rod is greater than the minimum range between valve body and the valve opening end face;
Valve body is near valve opening, and valve opening has the little amplitude of opening, and the gap between the valve opening aperture and first valve rod is less than the minimum range between valve body and the valve opening end face.
5. electrically-controlled valve as claimed in claim 1 is characterized in that, described pressure element comprises:
The pressure-sensitive chamber, the pressure-sensitive chamber is surrounded by housing and cover body, and cover body is provided with the passage that communicates with the compressor air suction chamber;
Bellows is arranged in the pressure-sensitive chamber, and the bellows upper end is fixed on cover body inside, and the lower end is unsettled.
6. electrically-controlled valve as claimed in claim 5 is characterized in that,
First valve rod is arranged between valve body and the bellows, and first valve rod slides in the chute of bellows.
7. electrically-controlled valve as claimed in claim 1 is characterized in that, described solenoid comprises:
Field coil, the field coil center fixation has static iron core, and the static iron core below is provided with moving iron core.
8. electrically-controlled valve as claimed in claim 7 is characterized in that,
Second valve rod is arranged between valve body and the solenoid, and second valve rod is fixed on the moving iron core.
9. electrically-controlled valve as claimed in claim 7 is characterized in that,
Form auxiliary valve pocket in the static iron core, this auxiliary valve pocket communicates with valve pocket by the passage on the guide piston;
Form auxiliary valve opening in the moving iron core, in the auxiliary valve opening auxiliary valve body is set, auxiliary valve body and valve body are fixed together, and auxiliary valve body moves the aperture that changes auxiliary valve opening in auxiliary valve opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202865509U CN201588995U (en) | 2009-12-29 | 2009-12-29 | Electrical control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202865509U CN201588995U (en) | 2009-12-29 | 2009-12-29 | Electrical control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588995U true CN201588995U (en) | 2010-09-22 |
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ID=42748776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202865509U Expired - Fee Related CN201588995U (en) | 2009-12-29 | 2009-12-29 | Electrical control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588995U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444742A (en) * | 2012-01-04 | 2012-05-09 | 大连海密梯克泵业有限公司 | Magnetic force driving mechanism for valve |
| CN111801496A (en) * | 2018-01-29 | 2020-10-20 | 翰昂汽车零部件有限公司 | Control device for compressor, electronic control valve for the control device and electronic compressor comprising the electronic control valve |
-
2009
- 2009-12-29 CN CN2009202865509U patent/CN201588995U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444742A (en) * | 2012-01-04 | 2012-05-09 | 大连海密梯克泵业有限公司 | Magnetic force driving mechanism for valve |
| CN111801496A (en) * | 2018-01-29 | 2020-10-20 | 翰昂汽车零部件有限公司 | Control device for compressor, electronic control valve for the control device and electronic compressor comprising the electronic control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Shanghai City 200025 Madang Road No. 347 Patentee after: SANDEN HUAYU AUTOMOTIVE AIR-CONDITIONING CO., LTD. Address before: Shanghai City 200025 Madang Road No. 347 Patentee before: Sandian Beier Automobile Air-Conditioner Co., Ltd., Shanghai |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20161229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |