CN101614201B - Control valve for variable volume type compressor - Google Patents
Control valve for variable volume type compressor Download PDFInfo
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- CN101614201B CN101614201B CN 200810039702 CN200810039702A CN101614201B CN 101614201 B CN101614201 B CN 101614201B CN 200810039702 CN200810039702 CN 200810039702 CN 200810039702 A CN200810039702 A CN 200810039702A CN 101614201 B CN101614201 B CN 101614201B
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- valve
- movable member
- control valve
- pressure sensing
- pressure
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Abstract
The invention relates to a control valve for a variable volume type compressor, which comprises a valve shell, a valve body, a pressure conduction part, a valve rod, a fixed part and a movable part. The inside of the valve shell is restricted with a valve cavity, a pressure sensing cavity and an actuating cavity; the valve cavity is connected with an exhaust cavity and a crankshaft cavity of the compressor; the valve cavity is provided with a control channel; the valve body is accommodated in the valve cavity to adjust the opening degree of the control channel; the valve rod is axially arranged; one end of the valve rod in the valve cavity supports the other side of the valve body, wherein one of the fixed part and the movable part is provided with a radial first magnetic field in electrification; and the other one of the fixed part and the movable part forms annular current vertical to the radial first magnetic field in electrification and generates axial interaction force between the fixed part and the movable part so that the movable part axially moves relative to the fixed part.
Description
Technical field
The present invention relates to automobile air conditioner compressor, relate in particular to the control valve that can replace magnetic clutch and capacity variable type compressor be controlled to minimum injection rate.
Background technique
Control valve is multiplex in the control gear of variable displacement compressor at present.Its major function is to control the discharge capacity of compressor by the pressure of inspiration(Pi) of variable compressor and external control electric current.Fig. 1 is a kind of existing variable displacement compressor control valve.As shown in Figure 1, in this control valve, Ps introduces the compressor air suction cavity pressure, and Pd introduces the compressor air-discharging cavity pressure, and Pc introduces the compressor crank cavity pressure.Control valve comprises 1, one secured core 8 of 4, one solenoids of 5, one pressure sensitive assemblies of a valve rod and a moving iron core 2.Pressure responsive element is come mobile valve by induction pressure of inspiration(Pi) Ps, thereby the circulation area that changes valve port 7 is to change the flow of Pd to Pc, and the flow of Pd to Pc changes the pressure that causes Pc and changes.Control valve changes the aperture of valve port 7 by experiencing air aspiration cavity pressure P s and control electric current, adjust crank cavity pressure Pc thereby changed exhaust pressure Pd to the conducting degree of cavity pressure Pc, the pressure reduction of Pd and Pc has determined that the compressor slanting plate angle is compressor displacement.
In the control valve working state, energization solenoid 1 generates induction field by adding the control electric current, to static iron core 8 and moving iron core 2 magnetization, thereby produces electromagnetic attraction between static iron core 8 and the moving iron core 2.Because static iron core 8 is fastened in the valve, therefore moving iron core 2 is subject to electromagnetic force and drives the interior pulling valve rod 5 of valve.Moving iron core 2 can be free to slide in valve body.Answering once spring 6 on the valve rod 5 is fixed between the dynamic and static iron core.Pressure of inspiration(Pi) Ps guiding channel applies a power to pressure element bellows 4, and the electromagnetic force on this power and the moving iron core 2 is formed makes a concerted effort to spur valve rod 5, changes thus the conducting degree between the exhaust pressure Pd and cavity pressure Pc in the control valve.Electromagnetic force is directly proportional with size of current on supplying to coil 1, and this current value has determined the desired value of suction pressure.When magnitude of current reduced, it is large that the aperture of control valve becomes.When not having electric current supply to coil 1, the aperture of valve will be set in a maximum value.During the elastic force balance of the power that is subjected on the bellows 4, electromagnetic force and control valve rear case 3 inner springs 6, can determine the conducting degree of exhaust pressure Pd and pressure of inspiration(Pi) Pc, thereby can change thus crank cavity pressure Pc reaches desired value and can adjust the swash plate angle of compressor, changed piston stroke, made the discharge capacity of compressor controlled.
Yet because the electromagnetic force on the valve rod is the magnetic fields generation that powers on and miscarry and give birth to by acting on coil, coil is made by a large amount of copper cash, and cost is higher and winding volume is larger.
Summary of the invention
The object of the present invention is to provide a kind of control valve for accurately controlling the air-conditioning refrigeration system variable compressor, it uses the less and small volume of copper cash.
In order to realize above-mentioned purpose of the present invention, in embodiments of the present invention, provide a kind of control valve for variable volume type compressor, comprising:
Limit a valve pocket, a pressure sensing chamber and a start chamber in the valve casing, valve casing, this valve pocket connects exhaust cavity and the crank chamber of compressor, and valve pocket has a control channel;
Valve body is contained in the valve pocket to regulate the opening degree of this control channel;
The pressure conduction parts are contained in this pressure sensing chamber, and apply an active force in this valve body one side according to the pressure of pressure sensing chamber;
Valve rod, setting and one end are at the opposite side of this valve body of valve pocket internal support vertically;
Fixed component is fixed in this start chamber;
Movable member, this fixed component arranges relatively in this start chamber, and connects the other end that this valve rod is positioned at this start chamber;
Wherein this fixed component and movable member one of them have radially the first magnetic field in when energising, wherein another forms the ring current perpendicular to this first magnetic field radially when energising for this fixed component and movable member, and between this fixed component and this movable member, produce axial interaction force, relative this fixed component of this movable member is moved axially.
In above-mentioned control valve, this movable member comprises a magnetic conductive component and a field coil, and this field coil makes this magnetic conductive component magnetization and forms the electromagnet with this first magnetic field when switching on.
In above-mentioned control valve, this magnetic conductive component has the hollow part of an annular, and this first magnetic field radially is distributed in this annular hollow part.
In above-mentioned control valve, this fixed component comprises an inductor coil, and this inductor coil is around this annular hollow part setting.
In above-mentioned control valve, this fixed component comprises a magnetic conductive component and a field coil, and this field coil makes this magnetic conductive component magnetization and forms the electromagnet with first magnetic field when switching on.
In above-mentioned control valve, this magnetic conductive component has the hollow part of an annular, and this first magnetic field radially is distributed in this annular hollow part.
In above-mentioned control valve, this movable member comprises an inductor coil, and this inductor coil is around this annular hollow part setting.
In above-mentioned control valve, these pressure conduction parts comprise: pressure sensing spare, and experience the variation of pressure sensing cavity pressure and produce resiliently deformable; And drive link, conduct this pressure sensing spare resiliently deformable and apply this active force to this side of this valve body.
In above-mentioned control valve, pressure sensing chamber can be communicated with the air aspiration cavity of compressor.
In above-mentioned control valve, also can comprise die sleeve, coat this movable member to allow endwisely slipping of this movable member.
Therefore, the present invention has mainly used field coil, inductor coil and magnetic conductive component to substitute moving iron core and the secured core in the existing control valve and has adjusted the position of coil in control valve.Field coil is by making up with magnetic conductive component, be formed with the electromagnet in fixed magnetic field loop, make the current direction of energising inductor coil mutually vertical with the magnetic direction that electromagnet forms, electromagnet substitutes the effect of moving the suffered electromagnetic force of iron core in the control valve commonly used to the reaction force of the electromagnetic force of inductor coil, electromagnet itself promotes valve rod as movement parts, because the intrinsic magnetic fields of electromagnet makes control valve work more linear, coil winding reduces volume, thereby has reduced cost.Simultaneously, owing to the change in location of coil in control valve among the present invention, dwindled the volume of control valve.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 is existing control valve sectional view.
Fig. 2 is the control valve sectional view according to the embodiment of the invention.
Fig. 3 is the electromagnet schematic diagram according to the embodiment of the invention.
Embodiment
Embodiments of the present invention is described in detail below in conjunction with accompanying drawing.
Fig. 2 is the control valve sectional view of the embodiment of the invention.
As shown in Figure 2, in the control valve 100 of the present invention, the inner air path conductive channel radially extends to first passage 103 from valve pocket 102, and the upstream portion by air supply channel 106 couples together valve pocket 102 with refrigeration compressor ventilating pressure area Pd.Second channel 104 is connected communicating passage 107 by the downstream part of air supply channel 106 with crank cavity pressure district Pc.Therefore, first passage 103, valve pocket 102, control channel 107 and second channel 104 couple together the exhaust cavity in the air condition compressor and crank chamber as the part of air supply channel 106.Change according to crank cavity pressure Pc, this crank cavity pressure makes the tilt angle varied of the swash plate in the air condition compressor.This will change stroke and the compressor displacement of each piston.
One valve body 108 is contained in the valve pocket 102.Step between valve pocket 102 and the control channel 107 plays valve seat.This valve body 108 can open or close control channel 107 by external control, thereby opens or closes air supply channel 106.
Controlling component on the valve body 108 is the pressure conduction parts, and it applies an active force in this valve body upside according to the pressure of the pressure sensing chamber 109 in the valve casing.The pressure conduction parts comprise pressure sensing spare 105 and drive link 111.Pressure sensing spare 105 is bellows in the present embodiment, it is positioned at pressure sensing chamber 109, pressure sensing chamber 109 is connected with air aspiration cavity pressure area Ps in the air condition compressor by air supply channel, make bellows 105 produce resiliently deformable by the variation of experiencing pressure of inspiration(Pi) Ps, thereby make 105 pairs of pressure drive links of bellows 111 produce thrust.The lower end of pressure drive link 111 is subject to the upper end of making a concerted effort to be pressed on valve rod 110 of bellows 105 and spring 112.Pressure drive link 111 and valve rod 110 mass motions.
Controlling component under the valve body 108 is the combination of fixed component and movable member, makes the relative fixed component motion of movable member by the magnetic force between the two, and valve body 108 is produced active force.
In one embodiment, as shown in Figure 2, movable member comprises electromagnet 101, and it is fastenedly connected by magnetic conductive component 114 and field coil 113 and forms.One returning spring 115 places between electromagnet 101 and the valve casing 116.Returning spring 115 is in Pre strained state, promotes electromagnet 101 downwards.
In one embodiment, fixed component comprises inductor coil 118, its 121 bottoms, start chamber that are positioned at valve casing are connected with power supply 117, the size of current of control power input line circle after accepting such as the external signals such as open/close states, passenger accommodation temperature or target temperature of air-conditioning.Field coil 113 is subjected to external power supply 17 controls simultaneously with inductor coil 118.The size of electromagnetic force depends on the size of current value between inductor coil 118 and the electromagnet 101, therefore reaches the purpose of adjusting the valve rod aperture, thereby changes the air condition compressor discharge capacity.The aperture of control valve is by the determining positions of valve rod.
Be illustrated in figure 3 as the detailed description of electromagnetic force between electromagnet 101 and the inductor coil 118.
Above-mentioned magnetic conductive component 114 outside the first die sleeves 119 made from start chamber embedding non-magnet_conductible material.In one embodiment, leave the gap between this first die sleeve 119 and the magnetic conductive component 114, relative the first die sleeve of electromagnet is endwisely slipped.In another embodiment, if magnetic conductive component 114 surface roughnesses are too large, also can wrap up magnetic conductive component with the second die sleeve (not shown) that non-magnet_conductible material is made, can relative sliding between this second die sleeve and the first die sleeve 119.Field coil 113 can press-fit secure fit with magnetic conductive component 114, also can adopt the mode of welding to connect.Inductor coil 118 for example can be fixed with the Placement that concentrating flux plate 120 is taked to weld.
In addition, although the above embodiments be with electromagnet as movable member, yet in other embodiments, also can fixed electromagnet, and make the inductor coil axial motion promote valve rod, to change crank cavity pressure Pc.Those skilled in the art are after consulting above-described embodiment, when making accordingly easily this variation.
In sum, the present invention mainly promotes the control valve valve rod by the electromagnetic force between electromagnet and the hot-wire coil, thereby control control valve valve body aperture by the variation change change discharge capacity air-conditioning compressor swashplate angle of crank cavity pressure Pc, finally reaches the purpose of control compressor displacement.Because the intrinsic magnetic fields of electromagnet makes control valve work more linear, coil winding reduces volume, thereby has reduced cost.Simultaneously, owing to the change in location of coil in control valve among the present invention, dwindled the volume of control valve.
Top description only is for principle of the present invention is described.In addition, to those skilled in the art, can be easy to carry out various modifications and distortion, therefore, also do not wish to limit the invention in diagram and the described concrete structure of literal and the application, all suitable distortion and equivalence are replaced and all are considered to drop in appended claims of the present invention and their the equivalent mode of execution scope.
Claims (12)
1. control valve for variable volume type compressor comprises:
Limit a valve pocket, a pressure sensing chamber and a start chamber in the valve casing, valve casing, this valve pocket connects exhaust cavity and the crank chamber of compressor, and valve pocket has a control channel;
Valve body is contained in the valve pocket to regulate the opening degree of this control channel;
The pressure conduction parts are contained in this pressure sensing chamber, and apply an active force in this valve body one side according to the pressure of pressure sensing chamber;
Valve rod, setting and one end are at the opposite side of this valve body of valve pocket internal support vertically, and the other end is positioned at this start chamber;
Fixed component is fixed in this start chamber;
Movable member, this fixed component arranges relatively in this start chamber, and connects the other end of this valve rod;
Wherein this movable member has the first magnetic field radially when energising, this fixed component forms the ring current perpendicular to this first magnetic field radially when energising, and between this fixed component and this movable member, produce axial interaction force, relative this fixed component of this movable member is moved axially
Wherein this movable member comprises a magnetic conductive component and a field coil, and this field coil makes this magnetic conductive component magnetization and forms the electromagnet with this first magnetic field when switching on, and this fixed component comprises an inductor coil.
2. control valve as claimed in claim 1 is characterized in that, this magnetic conductive component has the hollow part of an annular, and this first magnetic field radially is distributed in this annular hollow part.
3. control valve as claimed in claim 2 is characterized in that, this inductor coil is around this annular hollow part setting.
4. control valve as claimed in claim 1 is characterized in that, these pressure conduction parts comprise:
Pressure sensing spare is experienced the variation of pressure sensing cavity pressure and is produced resiliently deformable; And
Drive link, the resiliently deformable of conducting this pressure sensing spare are to this side of this valve body and apply this active force.
5. control valve as claimed in claim 1 is characterized in that, this pressure sensing chamber is communicated with the air aspiration cavity of compressor.
6. control valve as claimed in claim 1 is characterized in that, also comprises die sleeve, coats this movable member to allow endwisely slipping of this movable member.
7. control valve for variable volume type compressor comprises:
Limit a valve pocket, a pressure sensing chamber and a start chamber in the valve casing, valve casing, this valve pocket connects exhaust cavity and the crank chamber of compressor, and valve pocket has a control channel;
Valve body is contained in the valve pocket to regulate the opening degree of this control channel;
The pressure conduction parts are contained in this pressure sensing chamber, and apply an active force in this valve body one side according to the pressure of pressure sensing chamber;
Valve rod, setting and one end are at the opposite side of this valve body of valve pocket internal support vertically, and the other end is positioned at this start chamber;
Fixed component is fixed in this start chamber;
Movable member, this fixed component arranges relatively in this start chamber, and connects the other end that this valve rod is positioned at this start chamber;
Wherein this fixed component has the first magnetic field radially when energising, this movable member forms the ring current perpendicular to this first magnetic field radially when energising, and between this fixed component and this movable member, produce axial interaction force, relative this fixed component of this movable member is moved axially
Wherein this fixed component comprises a magnetic conductive component and a field coil, and this field coil makes this magnetic conductive component magnetization and forms the electromagnet with first magnetic field when switching on, and this movable member comprises an inductor coil.
8. control valve as claimed in claim 7 is characterized in that, this magnetic conductive component has the hollow part of an annular, and this first magnetic field radially is distributed in this annular hollow part.
9. control valve as claimed in claim 8 is characterized in that, this inductor coil is around this annular hollow part setting.
10. control valve as claimed in claim 7 is characterized in that, these pressure conduction parts comprise:
Pressure sensing spare is experienced the variation of pressure sensing cavity pressure and is produced resiliently deformable; And
Drive link, the resiliently deformable of conducting this pressure sensing spare are to this side of this valve body and apply this active force.
11. control valve as claimed in claim 7 is characterized in that, this pressure sensing chamber is communicated with the air aspiration cavity of compressor.
12. control valve as claimed in claim 7 is characterized in that, also comprises die sleeve, coats this movable member to allow endwisely slipping of this movable member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810039702 CN101614201B (en) | 2008-06-27 | 2008-06-27 | Control valve for variable volume type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810039702 CN101614201B (en) | 2008-06-27 | 2008-06-27 | Control valve for variable volume type compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101614201A CN101614201A (en) | 2009-12-30 |
| CN101614201B true CN101614201B (en) | 2013-03-20 |
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ID=41494039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810039702 Expired - Fee Related CN101614201B (en) | 2008-06-27 | 2008-06-27 | Control valve for variable volume type compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101614201B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070852U (en) * | 1990-06-29 | 1991-02-06 | 吕志信 | Magnetic force safety valve for boiler |
| CN1878957A (en) * | 2003-11-14 | 2006-12-13 | 伊格尔工业股份有限公司 | Capacity control valve |
| CN101189432A (en) * | 2005-06-03 | 2008-05-28 | 伊格尔工业股份有限公司 | Capacity control valve |
-
2008
- 2008-06-27 CN CN 200810039702 patent/CN101614201B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070852U (en) * | 1990-06-29 | 1991-02-06 | 吕志信 | Magnetic force safety valve for boiler |
| CN1878957A (en) * | 2003-11-14 | 2006-12-13 | 伊格尔工业股份有限公司 | Capacity control valve |
| CN101189432A (en) * | 2005-06-03 | 2008-05-28 | 伊格尔工业股份有限公司 | Capacity control valve |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2000-283048A 2000.10.10 |
| JP特开2005-201106A 2005.07.28 |
| JP特开2006-291765A 2006.10.26 |
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| Publication number | Publication date |
|---|---|
| CN101614201A (en) | 2009-12-30 |
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| 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 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20180627 |
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| CF01 | Termination of patent right due to non-payment of annual fee |