CN100414097C - Linear compressor - Google Patents

Linear compressor Download PDF

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Publication number
CN100414097C
CN100414097C CNB2005100847822A CN200510084782A CN100414097C CN 100414097 C CN100414097 C CN 100414097C CN B2005100847822 A CNB2005100847822 A CN B2005100847822A CN 200510084782 A CN200510084782 A CN 200510084782A CN 100414097 C CN100414097 C CN 100414097C
Authority
CN
China
Prior art keywords
back cover
initial value
piston
nut
value control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2005100847822A
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Chinese (zh)
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CN1760545A (en
Inventor
卢基元
金烔汉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Neo Lab Convergence Inc.
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of CN1760545A publication Critical patent/CN1760545A/en
Application granted granted Critical
Publication of CN100414097C publication Critical patent/CN100414097C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F05B2230/604—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins
    • F05B2230/608—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins for adjusting the position or the alignment, e.g. wedges or excenters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/22—Pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S267/00—Spring devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

Abstract

Disclosed herein is a linear compressor. In the present invention, an initial value control nut for controlling an initial position of a piston and a releasing protection nut for preventing the initial value control nut from releasing are combined in a bolt of a stator cover as a double nut method. The initial value control nut and the releasing protection nut are wound in the opposite direction. Therefore, it can prevent the initial value control nut from releasing, and can prevent the linear compressor from breaking down, thus improving the durability and the reliability.

Description

Linearkompressor
Technical field
The present invention relates to a kind of Linearkompressor, especially, in this Linearkompressor, can prevent the initial value control nut loosening of control piston initial position.Thus, this Linearkompressor has the effect that improves serviceability and reliability.
Background technique
Usually, Linearkompressor is so a kind of machine, and it is by the Linear Driving power apparatus of linear motor, and piston sucks in the ground to-and-fro motion of cylinder internal linear by making, compression and exhaust fluid.
Fig. 1 shows the Linearkompressor according to prior art.
Traditional Linearkompressor comprises: sealed enclosure 2 and be arranged in the linear compression parts (see figure 1) that sealed enclosure 2 is used for compressed fluid.
The inlet 3 that is used to suck fluid passes an end of sealed enclosure 2, and the linear compression parts support by the main vibration damper 4 and the auxilliary vibration damper 5 that are arranged in the sealed enclosure 2, so that absorbing vibration.
The linear compression parts comprise: the front portion that has the linear motor 20 of the cylinder block (cylinder block) 7 of cylinder 6, the back cover 9 that is provided with intake line 8, the piston 10 that moves around, driven plunger 10 and be arranged in cylinder 6 in cylinder 6 is in order to the discharging unit for discharging 30 of the fluid that is emitted on cylinder 6 compressions.
Discharging unit for discharging 30 is connected to blowdown piping 31, and the fluid that blowdown piping 31 will be discharged from cylinder is directed to the outside of sealed enclosure.
Linear motor 20 is divided into fixed component and movable part.This fixed component comprises: external stator 21, inner stator 22 and have the coil 23 in magnetic field.This movable part comprises: by reciprocating linearly magnet 24 of the magnetic force of wound coil 23 and magnet framework 25, magnet 24 is fixed on the magnet framework 25.
Cylinder block 7 is positioned at the front portion of external stator 21, and stator case 26 is arranged at the rear portion of external stator 21.
Piston 10 receives from the linear driving force of magnet 24 and in the ground to-and-fro motion of cylinder 6 internal linear.Cylinder has the drum in its rear portion opened.The suction passage that fluid enters just is arranged at wherein.Flange 11 is arranged on the rear portion of piston 10, so that be fixed on the magnet framework 25.
At the rear portion of magnet framework 25, the spring support 27 that engages with magnet framework 25 is set.This spring support 27 has and is used for the main spring that elastic support piston 10 carries out linear reciprocating motion.
Spring support 27 is arranged between stator case 26 and the back cover 9, and is fixed on the magnet framework 25.Main spring comprises: at first main spring 28 between spring support 27 and the back cover 9 and second main spring 29 between spring support 27 and stator case 26.
Be set on the stator case 26 to back cover 9 outstanding bolts 32, so that pass spring support 27 and back cover 9.
Spring support 27 and back cover 9 have the through hole that allows bolt 32 pass respectively.After bolt 32 passes spring support 27 and back cover 9, its be positioned at back cover 9 rear portions and combine in order to the initial value of the initial position of control piston 10 control nut 33.
Conventional linear compressor with said structure is by following order operation.
In service at linear motor 20, magnet 24 to-and-fro motion linearly, its linear driving force is delivered to piston 10 by magnet framework 25.Thereby piston 10 moves around in cylinder 6.
When piston 10 during in the to-and-fro motion of cylinder 6 internal linear ground, the fluids in the sealed enclosure 2 are inhaled in the intake line 8 of back cover 9, compress by piston 10 in cylinder 6, and are discharged into the outside of sealed enclosure 2 by discharging unit for discharging 30 and blowdown piping 31.
When piston 10 moved around, piston 10 was supported by first main spring 28 and second main spring 29.
When moving around in piston 10 is arranged in cylinder 6, piston 10 should suitably occupy its initial position.Spring support 27, first main spring 28 and back cover 9 be inserted on the bolt 32 and after the rear portion of back cover 9 engages initial value control nut 33 in order in accordance with regulations, the initial position of control piston 10.
According to the degree that initial value control nut 33 screws, back cover 9 promotes first main spring 28.When spring support 27 is mobile by the elastic force of first main spring 28, the position of the piston 10 that may command combines with spring support 27.
Yet in traditional Linearkompressor, vibration and vibrations make initial value control nut 33 loosening easily.When initial value control nut 33 fluffed, piston 10 will change its initial position, thereby causes the influence to compressibility.And the branch defection of initial value control nut 33 brings fault to Linearkompressor.
Loosening in order to prevent initial value control nut 33, initial value control nut 33 is combined with bolt 32, and fixing by weld part (welding) 34.In this case, cause the 33 loosening restrictions of initial value control nut still to exist by the interference in the welding.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of Linearkompressor, the initial value control nut that wherein is used for the control piston initial position can not become flexible, thereby the initial position of this piston can not change, not only improve compressibility thus, but also improved serviceability and reliability.
Based on the present invention, aforementioned purpose and other purposes realize that by this Linearkompressor is provided this Linearkompressor comprises: stator case, and it is fixed on the linear motor; Back cover, it is positioned at and the position of this stator case at a distance of predetermined distance; Piston, it is by the to-and-fro motion linearly of this linear motor; Spring support, it is installed between this stator case and this back cover, so that engage with this piston; First main spring and second main spring, it is installed between this spring support and this back cover respectively and between this stator case and this spring support, carries out linear reciprocating motion flexibly to support this piston; Connection set, it is arranged on this stator case, to pass this spring support and this back cover; The initial value control gear, its back at this back cover combines with this connection set, to control the initial position of this piston; And anti-loosening device, it combines with this connection set, and is loosening to prevent this initial value control gear.
This connection set is outstanding to this back cover on this stator case, and it is the bolt with screw thread.This initial value control gear is the initial value control nut that combines with this bolt.This anti-loosening device is the anti-loosening nut that combines with this bolt.
This initial value control nut or this anti-loosening nut are the right-handed nuts, and another is a left-handed nut.
This bolt comprises: bar portion, and it passes this spring support; Main thread portion, it is from this bar portion extension and be provided with screw thread, to combine with this initial value control nut; And auxilliary screw section, it is from this main thread portion extension and be provided with screw thread, to combine with this anti-loosening nut.
This main thread portion have different diameters with this auxilliary screw section.
According to a scheme of the present invention, this Linearkompressor comprises: stator case, and it is fixed on the linear motor; Back cover, it is positioned at and the position of this stator case at a distance of predetermined distance; Piston, it is by the to-and-fro motion linearly of this linear motor; Spring support, it is installed between this stator case and this back cover, to engage with this piston; First main spring and second main spring, it is installed between this spring support and this back cover respectively and between this stator case and this spring support, carries out linear reciprocating motion flexibly to support this piston; Connection set, it is arranged on this stator case, to pass this spring support and this back cover; The initial value control gear, it combines with this connection set between this first main spring and this back cover, to control the initial position of this piston; And fixing device, it makes that this connection set and this back cover are fixed to one another at the back of this back cover.
This connection set is outstanding to this back cover on this stator case, and it is the bolt with screw thread.This fixing device is the locking nut that combines with this bolt at the back of this back cover.
This initial value control gear is the initial value control nut that combines with this bolt, between the front portion of this first main spring and this back cover.
This initial value control nut comprises: the attachment portion, and it combines with this bolt; And sheet section (sheet portion), it is radially outstanding on this attachment portion, to support this first main spring.
According to a scheme of the present invention, this Linearkompressor comprises: stator case, and it is fixed on the linear motor; Back cover, it is positioned at and the position of this stator case at a distance of predetermined distance; Piston, it is by the to-and-fro motion linearly of this linear motor; Spring support, it is installed between this stator case and this back cover, to engage with this piston; First main spring and second main spring, it is installed between this spring support and this back cover respectively and between this stator case and this spring support, carries out linear reciprocating motion flexibly to support this piston; Bolt, it is arranged on this stator case, to pass this spring support and this back cover; Mother nut, it is arranged in this first main spring, to combine with this bolt; And auxilliary nut, its back at this back cover combines with this bolt.
In having the Linearkompressor of the present invention of said structure, the initial value control nut of control piston initial position is combined on the bolt of this stator case with the anti-loosening nut that prevents this initial value control nut loosening with the double nut method, thereby can prevent this initial value control nut loosening, and can prevent that this Linearkompressor from breaking down.Thus, improve the serviceability and the reliability of this Linearkompressor.
Because this initial value control nut or this anti-loosening nut are the right-handed nuts, and another is left-handed nut, and this initial value control nut and this anti-loosening nut screw along opposite direction, prevents that this initial value from controlling the effect of nut loosening so can increase.
The internal diameter of this anti-loosening nut increases the effect that prevents this initial value control nut loosening thus less than the internal diameter of this initial value control nut.
Linearkompressor of the present invention with said structure comprises: initial value control nut, and it is controlled at the initial position of the piston between main spring and the back cover; And locking nut, its rear portion at back cover is fixed on the bolt and this back cover of stator case.This initial value control nut and this locking nut prevent this initial value control nut loosening thus, and improve serviceability and reliability with the combination of double nut method.
After the initial position of this piston was controlled nut adjustment by this initial value, this back cover was installed on this bolt by this nut.Therefore, be easy to carry out the installation of back cover.
Description of drawings
In conjunction with the accompanying drawings, from following description to the embodiment of the invention, these and other purposes of the present invention and advantage will become clear and be more readily understood.Wherein:
Fig. 1 is the sectional view according to the Linearkompressor of prior art;
Fig. 2 is the sectional view according to the Linearkompressor of first embodiment of the invention;
Fig. 3 is according to the initial value control gear of first embodiment of the invention and the side view of anti-loosening device;
Fig. 4 is according to the initial value control gear of first embodiment of the invention and the amplification view of anti-loosening device;
Fig. 5 is the side view according to the connection set of first embodiment of the invention;
Fig. 6 is according to the initial value control gear of the Linearkompressor of second embodiment of the invention and the side view of fixing device;
Fig. 7 is according to the initial value control gear of second embodiment of the invention and the amplification view of fixing device;
Fig. 8 is according to the initial value control gear of the Linearkompressor of third embodiment of the invention and the side view of fixing device.
Embodiment
In detail with reference to embodiments of the invention, its example is shown in the drawings now, and wherein similar reference character is represented similar parts in the text.Below by describing embodiment with reference to the accompanying drawings to explain the present invention.
Fig. 2 shows the Linearkompressor according to first embodiment of the invention, and Fig. 3 and Fig. 4 show initial value control gear and the anti-loosening device according to first embodiment of the invention, and Fig. 5 shows the connection set according to first embodiment of the invention.
Referring to figs. 2 to Fig. 5, comprise sealed enclosure 50 and be arranged in the linear compression parts of sealed enclosure 50 in order to compressed fluid according to the Linearkompressor of first embodiment of the invention.
The inlet 51 that sucks fluid is installed to be an end that passes sealed enclosure 50.The linear compression parts suspend in midair by main vibration damper 52 and auxilliary vibration damper 53 in sealed enclosure 50, with absorbing vibration.
The linear compression parts comprise: be provided with cylinder 54 cylinder block 55, be provided with towards the back cover 57 of inlet 51 intake line 56, the piston 58 that in cylinder 54, moves around, produce driving force so that the reciprocating linearly linear motor 60 of piston 58 and be arranged in the front portion of cylinder 54 so that be emitted on the discharging unit for discharging of the fluid of cylinder 54 compressions.
Linear motor 60 is split up into fixed component and movable part.This fixed component comprises: external stator 61, inner stator 62 and have the coil 63 in magnetic field.This movable part comprises: by means of reciprocating linearly magnet 64 of the magnetic force of wound coil 63 and magnet framework 65, magnet 64 is fixed on the magnet framework 65.
Piston 58 is fixed on the magnet framework 65, is delivered to piston 58 with the linear driving force with magnet 64.One end of piston 58 is inserted in the cylinder 54, and its other end is fixed on the magnet framework 65.
Piston 58 has the drum of rear portion opened.Be provided with the intake line 59 that enters for fluid in the piston 58.Flange 66 is arranged on the cylinder rear portion, to be fixed to the front of magnet framework 65.
In the front portion of piston 58, be formed with the suction port 67 that is used for fluid is drawn into the compression chamber of cylinder 54, and the suction valve 68 that is used to open and close suction port 67 is installed.
Discharging unit for discharging comprises: interior discharge closure 70, and it is fixed on the cylinder block 55 and is provided with discharge orifice; Escape cock 71, it is supported in the interior discharge closure 70 by spring, to open and close the compression chamber of cylinder 54; And outer discharge closure 72, it is positioned at and the position at a distance of predetermined distance, the outside of discharge closure 70.Blowdown piping 73 is connected on the outer discharge closure 72, will be directed to the outside of sealed enclosure 50 from the fluid that cylinder 54 is discharged.
The silencing apparatus 74 that is used to reduce noise is installed between the intake line 56 of the rear portion of piston 58 and back cover 57.Silencing apparatus 74 comprises the muffler body 75 that is arranged in piston 58 rear portions and extends with what be inserted into piston 58 from this muffler body and enters pipeline 76.
Cylinder block 55 is positioned at the front portion of external stator 61, and the stator case 77 that is used for cover external stator 61 is arranged on the rear portion of external stator 61.The distance that back cover 57 is predetermined at interval with stator case 77.
Spring support 78 is installed between stator case 77 and the back cover 57, to engage with piston 58 and magnet framework 65.Spring support 78 combines with the back of magnet framework 65.
Spring support 78 has the main spring that support piston 58 is flexibly carried out linear reciprocating motion.
Main spring comprises: first main spring 80, and it is arranged between spring support 78 and the back cover 57; And second main spring 81, it is arranged between spring support 78 and the stator case 77.First main spring 80 is located at upside and the downside in the sealed enclosure 50, and second main spring 81 then is located at right side and the left side in the sealed enclosure 50.
Connection set is set on the stator case 77, and it passes spring support 78 and back cover 57, and stator case 77 is combined with spring support 78 and back cover 57.
One end of connection set is fixed on the stator case 77, and its other end is outstanding to back cover 57, and this connection set is the bolt 82 that has screw thread at its circumference.
In spring support 78, form the through hole that passes for bolt 82, when piston 58 moves around, slide before and after through hole is on bolt 82 by making with engaging of piston 58.
Rear portion at back cover 57 has: the initial value control gear, and it combines with bolt 82, is used for the initial position of control piston 58; And anti-loosening device, it combines with bolt 82, is used to prevent that the initial value control gear is loosening.
This initial value control gear is the initial value control nut 83 that combines with bolt 82, and this anti-loosening device is the anti-loosening nut 84 that combines with bolt 82, and this bolt 82 is controlled nut 83 with this initial value and combined.
As shown in Figure 5, initial value control nut 83 or anti-loosening nut 84 are right-handed nuts, and another is a left-handed nut.Such example is described below, that is, initial value control nut 83 is the right-handed nuts that rotate combination along direction to the right, and anti-loosening nut 84 is the left-handed nuts that rotate combination along direction left.
Bolt 82 comprises: bar portion 85, and it passes spring support 78; Main thread portion 86, it is from 85 extensions of bar portion and be provided with screw thread to combine with initial value control nut 83; And auxilliary screw section 87, it is from 86 extensions of main thread portion and be provided with screw thread, to combine with anti-loosening nut 84.
Main thread portion 86 has the screw thread that screws along direction to the right, and auxilliary screw section 87 has the screw thread that screws along direction left.
As shown in Figure 5, main thread portion 86 has different diameters with auxilliary screw section 87.Ideally, the diameter of auxilliary screw section 87 is less than the diameter of main thread portion 86.
The internal diameter of initial value control nut 83 and anti-loosening nut 84 is respectively towards the external diameter of main thread portion 86 and auxilliary screw section 87.
Working procedure according to the Linearkompressor of first embodiment of the invention is described below.
When linear motor 60 operation, magnet 64 to-and-fro motion linearly, and its linear motion is delivered to piston 58 by magnet framework 65, makes piston 58 in the ground to-and-fro motion of cylinder 54 internal linear.
When piston 58 during in the to-and-fro motion of cylinder 54 internal linear ground, fluid in sealed enclosure 50 is inhaled in the intake line 56 of back cover 57, compress in cylinder 54 by piston 58, and be discharged into the outside of sealed enclosure 50 by interior discharge closure 70 and outer discharge closure 72 and blowdown piping 73.
When piston 58 was mobile backward, spring support 78 moved backward with piston 58, and made 80 compressions of first main spring.When piston 58 moved forward, spring support 78 moved forward, and made 81 compressions of second main spring.
Elastic force ground support piston 58 by first main spring 80 and second main spring 81 is carried out linear reciprocating motion.
The method of the initial position of adjusting piston 58 is described below.
After spring support 78, first main spring 80 and back cover 57 are inserted on the bolt 82 that is fixed in stator case 77 in accordance with regulations in proper order, initial value control nut 83 combines with the main thread portion 86 of bolt 82 at the rear portion of back cover 57.
Because initial value control nut 83 combines with the main thread portion 86 of bolt 82, so initial value control nut 83 can promote first main spring 80 by back cover 57.
Be combined into when the spring support 78 that engages with piston 58 elastic force by first main spring 80 moves, can determining the initial position of piston 58.
According to the degree that initial value control nut 83 combines with bolt 82, the initial position of may command piston 58.
After the initial position of having adjusted piston 58, anti-loosening nut 84 combines with the auxilliary screw section 87 of bolt 82.
Initial value control nut 83 and anti-loosening nut 84 are combined on the bolt 82 with the double nut method, and initial value is controlled nut 83 and anti-loosening nut 84 is screwed along opposite direction.Can prevent that thus initial value control nut 83 is loosening.
In the description of second embodiment of the invention, and adopted identical reference character, and omitted its detailed explanation with reference to the identical structure of the first embodiment of the invention of figure 2.
Fig. 6 and Fig. 7 show initial value control gear and the fixing device according to the Linearkompressor of second embodiment of the invention.
With reference to figure 6 and Fig. 7, comprise according to the Linearkompressor of second embodiment of the invention: stator case 77, it is fixed on the linear motor 60; Back cover 57, the distance that itself and stator case 77 are scheduled at interval; Piston 58, it is by linear motor 60 to-and-fro motion linearly; Spring support 78, it is installed between stator case 77 and the back cover 57, to engage with piston 58; First main spring 80, it is installed between spring support 78 and the back cover 57, carries out linear reciprocating motion with support piston 58 flexibly; Connection set, it is set on the stator case 77, to pass spring support 78 and back cover 57; The initial value control gear, it combines with this connection set between first main spring 80 and back cover 57, with the initial position of control piston 58; And fixing device, it makes this connection set and back cover 57 fixed to one another at the rear portion of back cover 57.
Also include second main spring 81, come flexibly support piston 58 to carry out linear reciprocating motion between spring support 78 and the stator case 77 by it is installed in.
One end of this connection set is fixed on the stator case 77, and its other end is outstanding to back cover 57, and this connection set is the bolt 90 that has screw thread at its circumference.
The initial value control gear is the initial value control nut 93 that combines with bolt 90, and it is between the front portion of first main spring 80 and back cover 57.
Initial value control nut 93 comprises: attachment portion 94 has screw thread, to combine with bolt 90 on its circumference; And sheet section 95, it is radially outstanding on attachment portion 94, to support first main spring.
Fixing device is the locking nut 96 that combines with the bolt 90 that passes back cover 57 at the rear portion of back cover 57.
Bolt 90 comprises: bar portion 92, and it passes spring support 78; Screw section 91, it extends from bar portion 92, and is provided with screw thread to combine with initial value control nut and locking nut.
The method that is adjusted at according to the piston initial position in the Linearkompressor of second embodiment of the invention is described below.
After order was inserted on the bolt 90 that is fixed in stator case 77 in accordance with regulations, initial value control nut 93 combined with bolt 90 at spring support 78 and first main spring 80.
When initial value control nut 93 combined with bolt 90, initial value control nut 93 can promote first main spring 80.Be combined into when the spring support 78 that engages with piston 58 elastic force by first main spring 80 moves, can determining the initial position of piston 58.
By initial value control nut 93, the interval that makes spring support 78 and back cover 57 have regulation, thereby the initial position of definite piston 58 that combines with spring support 78.
After this, back cover 57 is arranged on the bolt 90, and locking nut 96 combines with bolt 90 at the rear portion of back cover 57.
Because initial value control nut 93 and locking nut 96 are combined on the bolt 90 with the double nut method, so it can prevent that initial value control nut 93 is owing to the mutual thrust between initial value control nut 93 and the locking nut 96 is become flexible.
Do not limit the foregoing description, spacer element can be used for the initial value control gear, make the distance that spring support 78 is predetermined at interval with back cover 57.
In the description of third embodiment of the invention, and adopted identical reference character, and omitted its detailed explanation with reference to the identical structure of the first embodiment of the invention of figure 2.
Fig. 8 shows initial value control gear and the fixing device according to the 3rd embodiment's Linearkompressor.
As shown in Figure 8, comprise according to the Linearkompressor of third embodiment of the invention: stator case 77, it is fixed on the linear motor 60; Back cover 57, the distance that itself and stator case 77 are scheduled at interval; Piston 58, it is by linear motor 60 to-and-fro motion linearly; Spring support 78, it is installed between stator case 77 and the back cover 57, to engage with piston 58; First main spring 80, it is installed between spring support 78 and the back cover 57, carries out linear reciprocating motion with support piston 58 flexibly; Connection set, it is set on the stator case 77, to pass spring support 78 and back cover 57; The initial value control gear, it combines and is set in first main spring 80, with the initial position of control piston 58 with this connection set; And fixing device, it makes this connection set and back cover 57 fixed to one another at the rear portion of back cover 57.
Also include second main spring 81, come flexibly support piston 58 to carry out linear reciprocating motion between spring support 78 and the stator case 77 by it is installed in.
One end of this connection set is fixed on the stator case 77, and its other end is outstanding to back cover 57, and this connection set is the bolt 100 that has screw thread at its circumference.
The external diameter of initial value control gear is less than the internal diameter of first main spring 80, and the initial value control gear is the initial value control nut 103 that combines with bolt 100.
Fixing device is the locking nut 104 that combines with bolt 100 at the rear portion of back cover 57.
Bolt 100 comprises: bar portion 101, and it passes spring support 78; Screw section 102, it extends from bar portion 101, and is provided with screw thread to combine with initial value control nut 103 and locking nut 104.
The method that is adjusted at according to the piston initial position in the Linearkompressor of third embodiment of the invention is described below.
After order was inserted on the bolt 100 that is fixed in stator case 77 in accordance with regulations, initial value control nut 103 combined with bolt 100 at spring support 78 and first main spring 80.
When back cover 57 is inserted on the bolt 100 that combines with initial value control nut 103, support first main spring by back cover 57.
The degree that combines with bolt 100 according to initial value control nut 103 is determined the assembling position of back cover 57, and back cover 57 promotions first main spring 80.Mobile spring supporting element 78, and the initial position of definite piston 58.
After this, locking nut 104 combines with the bolt 100 that passes back cover 57, thereby prevents owing to becoming flexible at the initial value of back cover 57 front portions control nut 103 with in the mutual thrust of the locking nut 104 at back cover 57 rear portions.And the initial position of back cover 57 is fixed firmly.
Operational effect according to Linearkompressor of the present invention is described below.
Can be clear that from foregoing description, in Linearkompressor of the present invention, be used for the initial value control nut of control piston initial position and be used to prevent that the anti-loosening nut of initial value control nut loosening is attached to the bolt of stator case with the double nut method, thereby can prevent initial value control nut loosening, and can prevent destruction, thereby improve serviceability and reliability Linearkompressor.
Can be clear that from foregoing description initial value control nut or anti-loosening nut are the right-handed nuts, and another is a left-handed nut.And initial value control nut and anti-loosening nut screw along opposite direction, thereby cause increasing the effect that prevents initial value control nut loosening.
Can be clear that from foregoing description initial value is controlled the diameter of the internal diameter of nut less than anti-loosening nut, thereby cause enlarging the effect that prevents initial value control nut loosening.
Can be clear that from foregoing description Linearkompressor according to the present invention comprises: initial value control nut, it is used for the initial position of control piston between main spring and back cover; And locking nut, it is used for bolt and back cover at the rear portion of back cover fixed stator cover, and initial value control nut and locking nut are with the combination of double nut method.With this structure, initial value control nut loosening can be prevented, and destruction can be prevented Linearkompressor, improve serviceability and reliability thus.
Can be clear that from foregoing description after having adjusted the initial position of piston by initial value control nut, back cover is installed on the bolt by nut.Thereby back cover can easily be installed.
Although illustrate and described some embodiments of the present invention, those skilled in the art is to be understood that: only otherwise break away from principle of the present invention and spirit, can carry out multiple variation to embodiment in appended claims and equivalency range thereof.

Claims (10)

1. Linearkompressor, comprising:
Stator case, it is fixed on the linear motor;
Back cover, the distance that itself and this stator case is scheduled at interval;
Piston, it is by the to-and-fro motion linearly of this linear motor;
Spring support, it is installed between this stator case and this back cover, to engage with this piston;
First main spring and second main spring, it is installed between this spring support and this back cover respectively and between this stator case and this spring support, carries out linear reciprocating motion flexibly to support this piston;
Connection set, it is arranged on this stator case, to pass this spring support and this back cover;
The initial value control gear, its rear portion at this back cover combines with this connection set, so that control the initial position of this piston; And
Anti-loosening device, it combines with this connection set, so that prevent that this initial value control gear is loosening.
2. Linearkompressor as claimed in claim 1, wherein this connection set is a bolt from this stator case to this back cover that give prominence to and be provided with screw thread on, this initial value control gear is the initial value control nut that combines with this bolt by screw thread, and this anti-loosening device is the anti-loosening nut that combines with this bolt by screw thread.
3. Linearkompressor as claimed in claim 2, wherein this initial value control nut or this anti-loosening nut are the right-handed nuts, and another is a left-handed nut.
4. Linearkompressor as claimed in claim 3, wherein this bolt comprises: bar portion, it passes this spring support; Main thread portion, it is from this bar portion extension and be provided with screw thread, to combine with this initial value control nut; And auxilliary screw section, it is from this main thread portion extension and be provided with screw thread, to combine with this anti-loosening nut.
5. Linearkompressor as claimed in claim 4, wherein this main thread portion have different diameters with this auxilliary screw section.
6. Linearkompressor, comprising:
Stator case, it is fixed on the linear motor;
Back cover, the distance that itself and this stator case is scheduled at interval;
Piston, it is by the to-and-fro motion linearly of this linear motor;
Spring support, it is installed between this stator case and this back cover, to engage with this piston;
First main spring and second main spring, it is installed between this spring support and this back cover respectively and between this stator case and this spring support, carries out linear reciprocating motion flexibly to support this piston;
Connection set, it is arranged on this stator case, to pass this spring support and this back cover;
The initial value control gear, it combines with this connection set between this first main spring and this back cover, so that control the initial position of this piston; And
Fixing device, it makes that this connection set and this back cover are fixed to one another at the rear portion of this back cover.
7. Linearkompressor as claimed in claim 6, wherein this connection set is a bolt from this stator case to this back cover that give prominence to and be provided with screw thread on, and this fixing device is the locking nut that combines with this bolt at the rear portion of this back cover.
8. Linearkompressor as claimed in claim 7, wherein this initial value control gear is the initial value control nut that combines with this bolt by screw thread, it is between the front portion of this first main spring and this back cover.
9. Linearkompressor as claimed in claim 8, wherein this initial value control nut comprises: the attachment portion, it combines with this bolt; And sheet section, it is radially outstanding on this attachment portion, to support this first main spring.
10. Linearkompressor, comprising:
Stator case, it is fixed on the linear motor;
Back cover, the distance that itself and this stator case is scheduled at interval;
Piston, it is by the to-and-fro motion linearly of this linear motor;
Spring support, it is installed between this stator case and this back cover, so that engage with this piston;
First main spring and second main spring, it is installed between this spring support and this back cover respectively and between this stator case and this spring support, carries out linear reciprocating motion flexibly to support this piston;
Bolt, it is arranged on this stator case, to pass this spring support and this back cover;
Initial value control nut combines with this bolt by it being located in this first main spring, so that control the initial position of this piston; And
Locking nut, it makes that this bolt and this back cover are fixed to one another at the rear portion of this back cover.
CNB2005100847822A 2004-10-13 2005-07-20 Linear compressor Expired - Fee Related CN100414097C (en)

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CN108131272B (en) * 2017-11-01 2019-12-27 青岛海尔智能技术研发有限公司 Linear compressor
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