CN105298801B - Linearkompressor - Google Patents

Abstract

A kind of Linearkompressor, can be such that gas bearing is easily operated between the cylinder barrel and piston of Linearkompressor.The Linearkompressor includes：Housing, it is provided with sucting；Cylinder barrel, it is located at the inside of the housing, forms the compression stroke of refrigerant；Framework, it is combined with the outside of the cylinder barrel；Piston, it in the way of axially inside the moving back and forth of the cylinder barrel can set；Dump valve, it is located at the side of the cylinder barrel, the refrigerant that the compression stroke selectively discharged in the refrigerant is compressed；Flowing space portion, it is formed between the cylinder barrel and framework, and at least a portion refrigerant in the refrigerant discharged for use by the dump valve flows；Recess is sealed, it is connected with the flowing space portion；And seal member, it is arranged at the sealing recess in the way of it can move, the space separated between the framework and cylinder barrel is closed.

Description

Linearkompressor

Technical field

The present invention relates to Linearkompressor (linear compressor).

Background technology

Cooling system is the system instigated refrigerant circulation and produce cold air, the compression of refrigerant is performed repeatedly, condensation, swollen Swollen and evaporation process.Therefore, the cooling system includes compressor, condenser, expansion gear and evaporator.The cooling system It may be provided in refrigerator or air conditioner as household appliances.

In general, compressor (Compressor) is to receive power from the power generation arrangement such as electro-motor or turbine Air or refrigerant or other various working gas are compressed and improved the mechanical device of pressure, be widely used in the household electrical appliances Product or whole industry.

This compressor can be roughly divided into：Be formed between piston (Piston) and cylinder barrel (Cylinder) suction, The compression stroke of working gas is discharged, and piston carries out pressing refrigerant while straight reciprocating motion inside cylinder barrel The reciprocating motion type compressor (Reciprocating compressor) of contracting；In the roller (Roller) and cylinder barrel of eccentric rotary Between be formed with suction, discharge working gas compression stroke, and roller along inner wall of cylinder carry out eccentric rotary it is same When the rotary compressor (Rotary compressor) that is compressed to refrigerant；And in revolution scroll plate (Orbiting Scroll suction) is formed between fixed scroll (Fixed scroll), the compression stroke of working gas is discharged, and The scroll compressor that the revolution scroll plate is compressed while rotation along fixed scroll to refrigerant (Scroll compressor)。

Recently, in the reciprocating motion type compressor, many Linearkompressors are especially have developed, the Linearkompressor Piston is directly connected to carrying out the drive motor of linear reciprocating motion, damaged from without producing the mechanicalness caused by motion conversion Lose, it is possible to increase compression efficiency, and be configured to simple structure.

Generally, Linearkompressor is configured to the enclosure interior in closing, piston by linear motor inside cylinder barrel in the past Refrigerant is sucked while the mode of linear motion is moved and is discharged after compressing it.

The linear motor is configured to permanent magnet and is located between inner stator and external stator, and permanent magnet is configured to by forever Mutual electromagnetic force between long magnet and interior (or outer) stator carries out straight reciprocating motion.Moreover, as the permanent magnet exists It is driven in the state of linking with piston, piston is carried out sucking refrigerant while linear reciprocating motion and incited somebody to action inside cylinder barrel It is discharged after compressing.

On conventional Linearkompressor, the applicant had once applied for patent (hereinafter referred to as existing literature) and obtained Authorize.

Existing literature 1：Korean patent No. 10-1307688, grant date：On September 5th, 2013, denomination of invention：Linear pressure Contracting machine

Linearkompressor disclosed in above-mentioned existing literature includes the housing 110 for accommodating multiple parts.The housing 110 The height of above-below direction forms somewhat high as shown in Fig. 2 of existing literature.

Can be to the fuel feeding group that oil is supplied between cylinder barrel 200 and piston 300 moreover, possessing in the inside of the housing 110 Part 900.

In addition, in linear compressor application in the case of refrigerator, the Linearkompressor can be arranged in refrigerator Rear on the downside of Machine Room in.

Recently, the problem of internal storage space of increase refrigerator is primarily upon as consumer.In order to increase the refrigerator Internal storage space, it is necessary to reduce the volume of the Machine Room, reduce the line to reduce the volume of the Machine Room Property compressor size turn into major subjects.

But, the Linearkompressor disclosed in existing literature occupies relatively large volume, exists and is not suitable for being applied to increase The problem of refrigerator of large inner storage space.

Need the major part of compressor making small size in order to reduce the size of the Linearkompressor, but The problem of being possible to produce the degradation of the penalty of compressor in the case of this.

The problem of degradation in order to solve the compressor, it may be considered that the running frequency of increase compressor.But, The running frequency of compressor is higher, and the frictional force being circulated in caused by the oil inside compressor is bigger, the performance of compressor occurs The problem of reduction.

The content of the invention

The present invention proposes that its object is to provide one kind to make gas bearing linear to solve this problem The Linearkompressor easily worked between the cylinder barrel and piston of compressor.

The Linearkompressor of one embodiment of the invention includes：Housing, it is provided with sucting；Cylinder barrel, it is located at the shell The inside of body, forms the compression stroke of refrigerant；Framework, it is combined with the outside of the cylinder barrel；Piston, it is with can be described The mode axially inside moved back and forth of cylinder barrel is set；Dump valve, it is located at the side of the cylinder barrel, selectively arranged The refrigerant that the compression stroke gone out in the refrigerant is compressed；Flowing space portion, it is formed in the cylinder barrel and the framework Between, at least a portion refrigerant in the refrigerant discharged for use by the dump valve flows；Seal recess, itself and the stream Dynamic spatial portion connection；And seal member, it is arranged at the sealing recess in the way of it can move, to the framework and institute The space separated between cylinder barrel is stated to be closed.

And, it is characterised in that the radial direction of the sealing recess is highly more than the diameter of the seal member.

And, it is characterised in that the axial length of the sealing recess is more than the diameter of the seal member.

And, it is characterised in that on the basis of the flow direction of the refrigerant, the flow section of the sealing recess More than the flow section in the flowing space portion.

And, it is characterised in that the sealing recess formation is in the outer peripheral face of the cylinder barrel and the inner peripheral surface of the framework Between.

Also, the framework includes recess forming portion, the recess forming portion forms at least one side of the sealing recess, from Radial direction is recessed the inner peripheral surface of the framework laterally.

Also, the cylinder barrel includes the first rake, and first rake formation is corresponding with the recess forming portion Position, the direction reduced to the external diameter of the cylinder barrel extends.

And, it is characterised in that the seal member is moved along first rake.

Also, the framework includes the second rake, and second rake is from the recess forming portion to inward side to inclining Tiltedly extend.

Also, also include spray nozzle part, the spray nozzle part is formed at the outer peripheral face of the cylinder barrel, by the system in the flowing space portion The inner peripheral surface side of cryogen to the cylinder barrel is guided.

The Linearkompressor of another embodiment of the present invention is characterised by, including：Housing, it is provided with sucting；Cylinder Cylinder, it is located at the inside of the housing, forms the compression stroke of refrigerant；Framework, it surrounds the outside of the cylinder barrel；Piston, It in the way of axially inside the moving back and forth of the cylinder barrel can set；Dump valve, it is located at the cylinder barrel Side, the refrigerant that the compression stroke selectively discharged in the refrigerant is compressed；Flowing space portion, it is formed described Between the inner peripheral surface of the outer peripheral face of cylinder barrel and the framework, for the part of refrigerant in the refrigerant discharged from the dump valve Flowing；And sealing recess, it has the sectional area bigger than the flowing space portion, is provided with seal member.The flowing is empty Between the refrigerant in portion when acting on the seal member, the seal member is to the space between the framework and the cylinder barrel Carry out sealed position movement.

And, it is characterised in that when the refrigerant in the flowing space portion does not act on the seal member, the sealing Part is not to the sealed position movement of space progress between the framework and the cylinder barrel.

Also, the sealing recess includes：Recess forming portion, it is recessed from the inner peripheral surface of the framework；And first incline Inclined portion, it is formed at the outer peripheral face of the cylinder barrel.

And, it is characterised in that the framework includes the second rake obliquely extended from the recess forming portion, institute When the refrigerant for stating flowing space portion acts on the seal member, the seal member to first rake with it is described The space separated between second rake carries out sealed position movement.

The invention has the advantages that：

According to the above-mentioned present invention, the size of the compressor comprising inner body can be reduced, so as to reduce refrigerator Machine Room size, therefore there is the internal storage space that can increase refrigerator.

Also, by increasing the running frequency of compressor, it can prevent from causing performance to reduce because of diminishing for inner body, In addition, by applying gas bearing between cylinder barrel and piston, having the advantages that the frictional force produced by oil can be reduced.

Also, it is provided for sealing the re-frigerant flowing spaces between cylinder barrel and framework in the way of it can move Seal member, the seal member during the compressor operating using the pressure of refrigerant between cylinder barrel and framework between Every being sealed, so as to improve functional reliability.

Moreover, the recess of configuration seal member is more than the seal member, so that the seal member can be moved, tool There is the size that can reduce the power for putting on framework or cylinder barrel using seal member.Therefore, it is possible to prevent by aluminum The cylinder barrel of composition deforms.

Also, according to the structure of the recess, it can reduce when assembling cylinder barrel with framework and be done as caused by seal member Relate to, therefore, the assembling with cylinder barrel and framework becomes easy effect.

Also, possess multiple filters in the inside of compressor, thus with can prevent the nozzle from cylinder barrel to Advantage comprising foreign matter or oil component in the compressed gas (or discharge gas) that the outside of piston is flowed into.

Especially, absorbing silencer possesses the first filter, so as to prevent the foreign matter included in refrigerant from flowing into Possesses the second filter to discharge chambe, and in the joint portion of cylinder barrel and framework, so as to prevent the refrigerant gas compressed Foreign matter or oil component included in body flow to the gas inflow part of cylinder barrel.

Moreover, the gas inflow part of cylinder barrel possesses the 3rd filter, foreign matter or oil component can be prevented from the gas stream Enter the nozzle that portion flows into cylinder barrel.

As described above, the multiple filters possessed using compressor and drier, can be to being worked as bearing The foreign matter that is included of compressed gas or oil component filtered, therefore, it is possible to prevent from causing cylinder barrel because of foreign matter or oil component The phenomenon that spray nozzle part is blocked.

By the phenomenon for preventing the spray nozzle part of the cylinder barrel from blocking, gas can be effectively realized between cylinder barrel and piston The effect of bearing, therefore, it is possible to prevent the abrasion of cylinder barrel and piston.

Brief description of the drawings

Fig. 1 is the sectional view of the structure for the Linearkompressor for representing the embodiment of the present invention.

Fig. 2 is the sectional view of the structure for the absorbing silencer for representing the embodiment of the present invention.

Fig. 3 is the sectional view for the state for being configured with the second filter for representing the embodiment of the present invention.

Fig. 4 is the exploded perspective view of the structure of the cylinder barrel and framework that represent the embodiment of the present invention.

Fig. 5 is the sectional view of the bonding state of the cylinder barrel and piston that represent the embodiment of the present invention.

Fig. 6 is the exploded perspective view of the structure for the cylinder barrel for representing the embodiment of the present invention.

Fig. 7 is the figure being amplified to Fig. 5 " A ".

Fig. 8 is the sectional view of the bonding state of the cylinder barrel and framework that represent the embodiment of the present invention.

Fig. 9 is the figure being amplified to Fig. 8 " B ".

Figure 10 is the sectional view of the refrigerant flow regime for the Linearkompressor for representing the embodiment of the present invention.

The figure of the mobile status of seal member when Figure 11 is the Linearkompressor driving for representing the embodiment of the present invention.

Embodiment

Hereinafter, with reference to the accompanying drawings of the specific embodiment of the present invention.It should be noted that the technological thought of the present invention is not limited Due to the disclosed embodiments, understand that those skilled in the art of the technological thought of the present invention can be in identical technological thought model Enclose interior easy proposition other embodiment.

Fig. 1 is the sectional view of the structure for the Linearkompressor for representing the embodiment of the present invention.

Reference picture 1, the Linearkompressor 100 of the embodiment of the present invention includes：The housing 101 of substantially cylindrical shape, with it is described The side of housing 101 with reference to the first cover 102, combined with the opposite side of the housing 101 second cover 103.It is used as one, institute State that Linearkompressor 100 is transversely-placed, first cover 102 is combined with the right side of the housing 101, and described second covers 103 Combined with the left side of the housing 101.

Just in the broadest sense, the cover 103 of the first cover 102 and second can be understood as a structure of the housing 101.

The Linearkompressor 100 includes：It is arranged on the cylinder barrel 120 of the inside of the housing 101, in the cylinder barrel 120 Inside carry out linear reciprocating motion piston 130 and to the piston 130 provide driving force the horse as linear motor Up to component 140.

When the motor sub-assembly 140 drives, the piston 130 can be to be carried out at high speed reciprocating motion.According to this implementation The running frequency substantially 100Hz of the Linearkompressor 100 of example.

Specifically, the Linearkompressor 100 includes：Make sucting 104 and make in the cylinder that refrigerant is flowed into The discharge unit 105 for the refrigerant discharge that the inside of cylinder 120 is compressed.The sucting 104 is combined with the described first cover 102, institute Discharge unit 105 is stated to be combined with the described second cover 103.

The refrigerant sucked by the sucting 104 is flow in the piston 130 via absorbing silencer 150 Portion.Noise can be reduced during refrigerant passes through the absorbing silencer 150.The absorbing silencer 150 is by first The muffler 153 of muffler 151 and second is bonded.At least a portion of the absorbing silencer 150 is located at the piston 130 Inside.

The piston 130 includes the piston main body 131 of substantially cylindrical shape and radially prolonged from the piston main body 131 Long piston flange portion 132.The piston main body 131 moves back and forth in the inside of the cylinder barrel 120, the piston flange Portion 132 moves back and forth in the outside of the cylinder barrel 120.

The piston 130 can be made up of the aluminum (aluminum or aluminum alloy) as nonmagnetic material.Due to the piston 130 It is made up of aluminum, therefore, it is possible to prevent the magnetic flux produced by the motor sub-assembly 140 to be delivered to the piston 130 and to described The phenomenon of the External leakage of piston 130.The piston 130 can be formed using forging method.

In addition, the cylinder barrel 120 can be made up of the aluminum (aluminum or aluminum alloy) as nonmagnetic material.The cylinder barrel 120 can be with identical than i.e. species and composition ratio with the material composition of piston 130.

Because the cylinder barrel 120 is made up of aluminum, therefore, it is possible to prevent the magnetic flux produced by the motor sub-assembly 140 from passing It is delivered to the phenomenon of the cylinder barrel 120 and the External leakage to the cylinder barrel 120.Moreover, the cylinder barrel 120 can utilize extruded rod Processing method is formed.

The piston 130 is additionally, since to be made up of identical material (aluminium) with cylinder barrel 120, therefore thermal coefficient of expansion is each other It is identical.During Linearkompressor 100 is run, the housing 100 is internally formed high temperature (about 100 DEG C) environment, due to described Piston 130 is identical with the thermal coefficient of expansion of cylinder barrel 120, therefore the piston 130 can produce heat in the same amount with cylinder barrel 120 Deformation.

As a result, can prevent piston 130 and cylinder barrel 120 with size different from each other or direction generation thermal deformation in work During the motion of plug 130 interference is produced with the cylinder barrel 120.

The cylinder barrel 120 is configured to accommodate at least a portion and the piston 130 of the absorbing silencer 150 At least partially.

In the compression stroke P that is compressed using the piston 130 to refrigerant of being internally formed of the cylinder barrel 120. Moreover, the front part in the piston 130 is formed with the inlet hole 133 that makes refrigerant flow into the compression stroke P, inhaled described The front for entering hole 133 is provided with the inlet valve 135 for being selectively opened the inlet hole 133.In the inlet valve 135 substantially Central part is formed with the combined hole combined with defined bonded block.

It is provided with front of the compression stroke P：Form the discharge space from the compression stroke P refrigerants discharged Or discharge duct discharge cover 160 and combined and with the discharge cover 160 for selectively discharging in the compression stroke P The discharge valve assembly 161,162,163 of the refrigerant compressed.

The discharge valve assembly 161,162,163 includes：Beaten when the pressure of the compression stroke P is more than discharge pressure Open and refrigerant flowed into the dump valve 161 in the discharge space for discharging cover 160, be arranged on the dump valve 161 and discharge Cover the limit that between 160 and the valve spring 162 of offer elastic force and the deflection to the valve spring 162 are limited vertically Product 163.

Here, the compression stroke P can be understood as being formed between the inlet valve 135 and the dump valve 161 Space.Moreover, the inlet valve 135 forms the side in the compression stroke P, the dump valve 161 is arranged on the compression Space P opposite side is the opposite side of the inlet valve 135.

" axial direction " can be understood as the transverse direction in direction i.e. Fig. 3 that the piston 130 moves back and forth.Will be described " front " is defined as from the sucting 104 towards the direction that the direction of the discharge unit 105 is refrigerant flowing in " axial direction ", Its opposite direction is defined as at " rear ".

On the contrary, the vertical direction in so-called " radial direction " can be understood as with the piston 130 moves back and forth direction is i.e. Longitudinal direction in Fig. 1.

The limited part 163 is arranged on the discharge cover 160, and the valve spring 162 is arranged on the limited part 163 Rear.Moreover, the dump valve 161 is combined with the valve spring 162, the rear portion or the back side of the dump valve 161 are configured to By the preceding surface support of the cylinder barrel 120.

As one, the valve spring 162 can include leaf spring (plate spring).

During the piston 130 carries out linear reciprocating motion in the inside of the cylinder barrel 120, when the compression stroke P pressure is less than the discharge pressure and when below suction pressure, and the inlet valve 135 is opened, so that refrigerant is inhaled into The compression stroke P.On the contrary, when the pressure of the compression stroke P turns into more than suction pressure described above, in the suction In the state of valve 135 is closed, the refrigerant of the compression stroke P is compressed.

In addition, when the pressure of the compression stroke P turns into more than the discharge pressure, the valve spring 162 becomes Shape and open the dump valve 161, refrigerant is discharged from the compression stroke P, be discharged to discharge cover 160 discharge space.

Then, it is flowed into ring pipe 165 in the refrigerant of the discharge spatial flow of the discharge cover 160.The ring pipe 165 are combined with the discharge cover 160 and extend to the discharge unit 105, by the compression refrigerant in the discharge space guide to The discharge unit 105.As one, the ring pipe 165 has the shape wound along prescribed direction, spirally (round) Extension, and combined with the discharge unit 105.

The Linearkompressor 100 also includes the framework 110 combined with the outside of the cylinder barrel 120.The framework 110 is Structure for fixing the cylinder barrel 120, it is possible to use bonded block in addition is combined with the cylinder barrel 200.The framework 110 It is configured to surround the cylinder barrel 120.That is, described cylinder barrel 120 can be configured to be contained in the inner side of the framework 110.Moreover, institute Stating discharge cover 160 can be combined with the preceding surface of the framework 110.

In addition, at least a portion gas refrigerant in the high-pressure gas refrigerant for passing through the discharge of dump valve 161 of opening, The segment space that can be combined via the cylinder barrel 120 with framework 110, flows to the outer peripheral face side of the cylinder barrel 120.

Moreover, gas inflow part 122 (reference picture 7 and spray nozzle part 123 of the refrigerant via formation on the cylinder barrel 120 (reference picture 7) is flowed into the inside of the cylinder barrel 120.The refrigerant flowed into is flow between the piston 130 and cylinder barrel 120 Space, the outer peripheral face of the piston 130 can be made to separate from the inner peripheral surface of the cylinder barrel 120.Therefore, the refrigeration of the inflow Agent can play " the gas axle for reducing the friction that the piston 130 is produced during moving back and forth with cylinder barrel 120 Hold " function.

The motor sub-assembly 140 includes：It is fixed on the framework 110 and is configured to surround the outer fixed of the cylinder barrel 120 Son 141,143,145, to the internal separation of the external stator 141,143,145 and the inner stator 148 that configures and positioned at described The permanent magnet 146 in the space between external stator 141,143,145 and inner stator 148.

The permanent magnet 146 can utilize the mutual electricity between the external stator 141,143,145 and inner stator 148 Magnetic force carries out straight reciprocating motion.Moreover, the permanent magnet 146 can be made up of the single magnet with a magnetic pole, or Person is combined by multiple magnet with three magnetic poles and constituted.

The permanent magnet 146 can be combined using connecting member 138 with the piston 130.Specifically, it is described to link Part 138 is combined with the piston flange portion 132 and towards the bending of permanent magnet 146 and extended.With the permanent magnetic Iron 146 moves back and forth, and the piston 130 can vertically move back and forth together with the permanent magnet 146.

Moreover, the motor sub-assembly 140 also includes being used to the permanent magnet 146 being fixed on the connecting member 138 On fixed component 147.The fixed component 147 can be mixed by glass fibre or carbon fiber and constituted with resin (resin). The fixed component 147 is arranged to surround the inner side and outside of the permanent magnet 146, and the permanent magnetic can be maintained securely The bonding state of iron 146 and the connecting member 138.

The external stator 141,143,145 includes coil windings 143,145 and stator core 141.

The coil windings 143,145 include the coil of bobbin 143 and the circumferencial direction winding along the bobbin 143 145.The section of the coil 145 can be polygonal shape, can be hexagonal shape as one.

The stator core 141 is along the circumferential direction laminated by multiple laminations (lamination) and constituted, and is configured to Surround the coil windings 143,145.

The side of the external stator 141,143,145 is provided with stator case 149.The external stator 141,143,145 One sidepiece is supported by the framework 110, and the other side is supported by the stator case 149.

The inner stator 148 is fixed on the periphery of the framework 110.Moreover, the inner stator 148 by multiple laminations in institute The outside for stating framework 110 is along the circumferential direction laminated and constituted.

The Linearkompressor 100 also include be used for support the piston 130 support 137 and with the support 137 The back cover 170 that elasticity is combined.

The support 137 utilizes defined bonded block and the piston flange portion 132 and the knot of the connecting member 138 Close.

The front of cover 170 is combined with suction guide part 155 in the rear.The suction guide part 155 is so that by described The mode that the refrigerant that sucting 104 is sucked flows into the absorbing silencer 150 is guided.

The Linearkompressor 100 includes have adjusted each intrinsic frequency in the way of making the piston 130 carry out resonance motion Multiple springs 176 of rate.

The multiple spring 176 include being supported on the first spring between the support 137 and stator case 149 and by It is supported on the second spring between the support 137 and back cover 170.

The Linearkompressor 100 also includes being arranged on the both sides of the housing 101 and makes the inside of the compressor 100 The leaf spring 172,174 that part is supported by the housing 101.

The leaf spring 172,174 includes the first leaf spring 172 combined with the described first cover 102 and covered with described second 103 the second leaf springs 174 combined.It can be configured to as one, first leaf spring 172 is inserted into the housing 101 and The part that one cover 102 is combined, second leaf spring 174 is inserted into the part that the housing 101 is combined with the second cover 103.

Fig. 2 is the sectional view of the structure for the absorbing silencer for representing the embodiment of the present invention.

Reference picture 2, the absorbing silencer 150 of the embodiment of the present invention includes the first muffler 151 and first muffler 151 with reference to the second muffler 153 and the first filter for being supported by the muffler 153 of the first muffler 151 and second 310。

The muffler 153 of first muffler 151 and second is internally formed the flowing space for refrigerant flowing at it Portion.Specifically, the first muffler 151 lateral direction of discharge unit 105 extension, institute in the sucting 104 At least a portion for stating the first muffler 151 extends to the inside of the suction guide part 155.Moreover, second muffler 153 extend to the inside of the piston main body 131 from first muffler 151.

First filter 310 can be understood as the knot for being arranged on the flowing space portion and being filtered to foreign matter Structure.First filter 310 is constituted by having magnetic material, easily to the especially metal of the foreign matter included in refrigerant Dirt is filtered.

As one, first filter 310 is made up of stainless steel (stainless steel) material, with regulation Magnetic, phenomenon of getting rusty can be prevented.

It is configured to as another example, the magnetic material of coating tool on first filter 310, or in institute State the surface attachment magnet of the first filter 310.

First filter 310 can be made up of netted (mesh) type with multiple filter bores, with substantially round The shape of plate-like.Moreover, the filter bores can have the diameter or width below prescribed level.As one, the regulation Size can be about 25 μm.

First muffler 151 can be assembled with the second muffler 153 using press mode.Moreover, described One filter 310 is inserted into the pressing part of first muffler 151 and the second muffler 153 and assembled.

As one, groove portion is formed with the side in the muffler 153 of the first muffler 151 and second, and Include the jut for inserting the groove portion on the opposing party.

In the state of being located in the both sides of first filter 310 between the groove portion and jut, described first Filter 310 is supported by first, second muffler 151,153.

Specifically, it is located at the state between first, second muffler 151,153 in first filter 310 Under, when the muffler 153 of the first muffler 151 and second, close direction is moved and when being pressed into each other, first mistake The both sides of filter 310 are inserted between the groove portion and jut and are fixed.

As described above, by setting the first filter 310 on the absorbing silencer 150, to via the sucting Foreign matter in the refrigerant of 104 suctions more than prescribed level, can be filtered using first filter 310, so as to Enough prevent from including foreign matter in the refrigerant as the gas bearing function between piston 130 and cylinder barrel 120 and be flowed into institute State in cylinder barrel 120.

Also, because first filter 310 is securely fixed in the pressure of first, second muffler 151,153 Enter part, therefore, it is possible to prevent the phenomenon separated from the absorbing silencer 150.

Fig. 3 is the sectional view for the state for being configured with the second filter for representing the embodiment of the present invention, and Fig. 4 is to represent the present invention The exploded perspective view of the cylinder barrel of embodiment and the structure of framework.

Reference picture 3 and Fig. 4, the Linearkompressor 100 of the embodiment of the present invention include being arranged on framework 110 and cylinder barrel 120 it Between and the second filter 320 for being filtered to the high-pressure gas refrigerant discharged by dump valve 161.

Second filter 320 can be located at part or the faying face that the framework 110 is combined with cylinder barrel 120.

Specifically, the cylinder barrel main body 121 of the cylinder barrel 120 including substantially cylindrical shape and from the cylinder barrel main body 121 The cylinder barrel flange portion 125 radially extended.

The cylinder barrel main body 121 includes the gas inflow part 122 that discharged gas refrigerant is flowed into.The gas is flowed into Portion 122 can be formed as the outer peripheral face along the cylinder barrel main body 121 with the shaped depressions of circular.

Moreover, the gas inflow part 122 can be provided with it is multiple.Multiple gas inflow part 122 include being located at from described The axial centre portion of cylinder barrel main body 121 is close to gas inflow part 122a, 122b (reference picture 6) of a side position and positioned at from institute State the gas inflow part 122c (reference picture 6) that axial centre portion is close to another side position.

The cylinder barrel flange portion 125 possesses the joint portion 126 combined with the framework 110.The joint portion 126 can be with structure As from the periphery facing external direction of the cylinder barrel flange portion 125 protrude.The joint portion 126 can utilize defined combination Part is combined with the cylinder barrel combined hole 118 of the framework 110.

The cylinder barrel flange portion 125 includes the mounting surface 127 being arranged on the framework 110.The mounting surface 127 can be with It is the back part of the cylinder barrel flange portion 125 radially extended from the cylinder barrel main body 121.

The framework 110 includes：Surround the chassis body 111 of the cylinder barrel main body 121 and along the chassis body 111 Radial direction extension and with the cover joint portions 115 that are combined of discharge cover 160.

Multiple cover knots of the bonded block insertion for being combined with the discharge cover 160 are formed with the cover joint portion 115 Close hole 116 and for multiple cylinder barrel combined holes 118 of the bonded block insertion combined with the cylinder barrel flange portion 125.The cylinder Cylinder combined hole 118 is formed from the slightly concave position in the cover joint portion 115.

The framework 110, which possesses, to be rearward recessed from the cover joint portion 115 and supplies what the cylinder barrel flange portion 125 was inserted Recess 117.That is, described recess 117 can be configured to surround the outer peripheral face of the cylinder barrel flange portion 125.The recess 117 it is recessed Sunken depth can be corresponding with the front and back width of the cylinder barrel flange portion 125.

It could be formed between the inner peripheral surface of the recess 117 and the outer peripheral face of the cylinder barrel flange portion 125 defined Re-frigerant flowing spaces.The high-pressure gas refrigerant discharged from the dump valve 161 is via the re-frigerant flowing spaces, and court Flowed to the outer peripheral face of the cylinder barrel main body 121.Second filter 320 is arranged in the re-frigerant flowing spaces, energy It is enough that refrigerant is filtered.

Specifically, step-like installation portion is formed with the rearward end of the recess 117, can pacified in the installation portion Fill the second filter 320 of annular.

In the state of installing second filter 320 on the installation portion, when the cylinder barrel 120 and the framework 110 when combining, and the cylinder barrel flange portion 125 pushes second filter 320 from the front of second filter 320.That is, Second filter 320 can be located at installation portion and the cylinder barrel flange portion 125 of the framework 110 mounting surface 127 it Between be fixed.

Second filter 320 is configured to, and can cut through the gases at high pressure that the dump valve 161 of opening is discharged The oil component that foreign matter in refrigerant is flowed into included in the gas inflow part 122 of the cylinder barrel 120, adsorption refrigerating agent.

As one, second filter 320 can be including by PET, (Polyethylene Terephthalate gather Ethylene glycol terephthalate) fiber constitute non-woven fabrics or absorption cloth.The PET has heat resistance and mechanical strength Advantage.Moreover, more than 2 μm in refrigerant of foreign matter can be cut off.

It has passed through the flowing space between the inner peripheral surface of the recess 117 and the outer peripheral face of the cylinder barrel flange portion 125 High-pressure gas refrigerant passes through second filter 320, and refrigerant is filtered in the process.

The Linearkompressor 100 also includes seal member 200, and the seal member 200 is located at the cylinder barrel main body 121 Between outer peripheral face and the inner peripheral surface of the chassis body 111, the space between the cylinder barrel 120 and framework 110 is sealed. Between the outer peripheral face of the cylinder barrel main body 121 and the inner peripheral surface of the chassis body 111, it is formed with for accommodating the sealing The sealing recess 220 (reference picture 9) of part 200.

The seal member 200 can have ring-shaped (O-ring).

The seal member 200 can be located at the periphery of the first rake 128 in the rear portion of cylinder barrel main body 121 with encirclement Mode configure, and can be moved along first rake 128.

Fig. 5 is the sectional view of the bonding state of the cylinder barrel and piston that represent the embodiment of the present invention, and Fig. 6 is to represent of the invention real The figure of the structure of the cylinder barrel of example is applied, Fig. 7 is the figure being amplified to Fig. 5 " A ".

Reference picture 5 to Fig. 7, the cylinder barrel 120 of the embodiment of the present invention includes：With substantially cylindrical shape and the first main body of formation End 121a and the second body end 121b cylinder barrel main body 121 and the second body end from the cylinder barrel main body 121 The cylinder barrel flange portion 125 that 121b extends to radial outside.

The first body end 121a and the second body end 121b are with the axial centre portion of the cylinder barrel main body 121 The both side ends of the cylinder barrel main body 121 are formed on the basis of 121c.The first body end 121a provides the cylinder barrel main body 121 rear end, the second body end 121b provides the front ends of the cylinder barrel main body 121.

It is formed with the cylinder barrel main body 121 in the high-pressure gas refrigerant discharged for use by the dump valve 161 Multiple gas inflow part 122 of at least a portion refrigerant flowing.Conduct can be configured with the multiple gas inflow part 122 3rd filter 330 of " filter element ".

The multiple gas inflow part 122 is configured to outer peripheral face depression prescribed depth and width from the cylinder barrel main body 121 Degree.The refrigerant can be flowed into the cylinder barrel main body 121 by the multiple gas inflow part 122 and spray nozzle part 123 It is internal.

Moreover, the refrigerant flowed into is located between the outer peripheral face of the piston 130 and the inner peripheral surface of cylinder barrel 120, to institute Gas bearing is played a part of in the action for stating piston 130.That is, due to the inflow refrigerant pressure, the piston 130 Outer peripheral face maintains the state separated from the inner peripheral surface of the cylinder barrel 120.

The multiple gas inflow part 122 includes：One is close to positioned at from the axial centre portion 121c of the cylinder barrel main body 121 The first gas inflow part 122a and second gas inflow part 122b of side position and leaned on positioned at from the axial centre portion 121c To the third gas inflow part 122c of another side position.

First, second gas inflow part 122a, 122b is using the axial centre portion 121c of the cylinder barrel main body 121 as base Standard is located closer to the position of the second body end 121b, and the third gas inflow part 122c is with the cylinder barrel main body The position of the first body end 121a is located closer on the basis of 121 axial centre portion 121c.

That is, the multiple gas inflow part 122 is configured with the basis of the axial centre portion 121c of the cylinder barrel main body 121 Asymmetrical number.

Reference picture 1, for the internal pressure of the cylinder barrel 120, with the first bulk end close to the suction side of refrigerant Portion is compared 121a sides, and the pressure close to the second body end 121b sides of the discharge side of the refrigerant compressed is higher, so that logical Cross and form more gas inflow part 122 to strengthen the function of gas bearing in the second body end 121b sides, described First body end 121a sides form relatively little of gas inflow part 122.

The cylinder barrel main body 121 also includes from the multiple gas inflow part 122 to the inner peripheral surface of the cylinder barrel main body 121 The spray nozzle part 123 of direction extension.The spray nozzle part 123 is formed as having the width or size smaller than the gas inflow part 122.

The spray nozzle part 123 can be formed with multiple along the gas inflow part 122 with circle extension.Moreover, multiple sprays Mouth 123 mutually separates and configured.

The spray nozzle part 123 include with the gas inflow part 122 link inlet portion 123a and with the cylinder barrel master The export department 123b that the inner peripheral surface of body 121 links.The spray nozzle part 123 is formed as from inlet portion 123a towards the export department 123b has specific length.

The refrigerant of the gas inflow part 122 is flowed into the 3rd filter 330 by after filtering, is flow to The inlet portion 123a of the spray nozzle part 123, and flowed along the spray nozzle part 123 to the inner peripheral surface direction of the cylinder barrel 120.And And, refrigerant is flowed into the inner space of the cylinder barrel 120 by the export department 123b.

The piston 130 is carried out from the cylinder barrel 120 using the pressure from the export department 123b refrigerants discharged The action that inner peripheral surface separates, i.e., float from the inner peripheral surface of the cylinder barrel 120.That is, the refrigeration supplied to the inner side of the cylinder barrel 120 The pressure of agent provides buoyancy or floating pressure to the piston 130.

The cylinder barrel 120 also includes the first rake 128 extended obliquely rearward from the cylinder barrel main body 121.Institute The direction that stating the first rake 128 can be gradually reduced to the external diameter of the cylinder barrel 120 is formed obliquely.

Therefore, the cylinder barrel main body 121 can be less than by being formed with the external diameter of the cylinder barrel 120 of first rake 128 External diameter.

Fig. 8 is the sectional view of the bonding state of the cylinder barrel and framework that represent the embodiment of the present invention, and Fig. 9 is that Fig. 8 " B " is entered Gone amplification figure.

Reference picture 8 and Fig. 9, between the cylinder barrel 120 and framework 110 of the embodiment of the present invention, are formed with for use by the row The flowing space portion 210 of at least a portion refrigerant flowing gone out in the refrigerant of the discharge of valve 161.

The flowing space portion 210 can be from the cover joint portion 115 of the framework 110 and the cylinder barrel method of the cylinder barrel 120 Space between blue portion 125 starts rearward to extend, and extends to the rear portion of the chassis body 111 and the cylinder barrel main body Space between 121 the first body end 121a.

The refrigerant flowed in the flowing space portion 210 can be via the gas inflow part 122 and spray nozzle part 123, flowed to the inner peripheral surface side of the cylinder barrel 120.

The Linearkompressor 100 includes sealing recess 220, and the sealing recess 220 connects with the flowing space portion 210 It is logical, for setting seal member 200.

The sealing recess 220 is can to set the space of the seal member 200, is formed at the chassis body 111 Inner peripheral surface and the cylinder barrel main body 121 outer peripheral face between.Moreover, the sealing recess 220 can be formed at the framework 110 and the rear portion of cylinder barrel 120.On the basis of the flow direction of refrigerant, the flow section of the sealing recess 220 is more than The flow section in the flowing space portion 210.

Specifically, recess forming portion 112 is included in the rear portion of chassis body 111, the recess forming portion 112 is configured to It is recessed on the outside of from the inner circumferential of the chassis body 111 towards radial direction.The recess forming portion 112 forms the sealing recess 212 at least one side.

Moreover, the chassis body 111 also includes rearward obliquely extending in inner side direction from the recess forming portion 112 The second rake 113.

The cylinder barrel main body 121 includes the first rake 128 for being used to form the sealing recess 220.Described first inclines Inclined portion 128 constitutes at least one side of the sealing recess 220.

Rearward inner side is obliquely from the first body end 121a of the cylinder barrel main body 121 for first rake 128 Extension.Tilted moreover, first rake 128 can be extended to from the inner side of the recess forming portion 112 with described second The corresponding position in inner side in portion 113.

According to the sunk structure of the recess forming portion 112 and the incline structure of first rake 128, the sealing The radial direction height of recess 220 can be more than the diameter of the seal member 200.Moreover, the axial direction of the sealing recess 220 Length can be more than the diameter of the seal member 200.

That is, it is described sealing recess 220 can have the seal member 200 not with the chassis body 111 or cylinder barrel master The size for the degree that body 121 is interfered and can moved.

On the other hand, separate between the rear portion of first rake 128 and the rear portion of second rake 113 Space interval or apart from the diameter less than the seal member 200.Therefore, during Linearkompressor 100 works, system is worked as Cryogen along the flowing space portion 210 rearward flow when, the effect of pressure of the seal member 200 in the refrigerant Under rearward move, the space of the separation is closed.

As noted previously, as the seal member 200 is located between the cylinder barrel 120 and framework 110 to the flowing sky Between portion 210 closed, therefore, it is possible to prevent the refrigerant in the flowing space portion 210 from leaking into the outside of the framework 110.

Moreover, the seal member 200 is arranged on the sealing recess 220 in the way of it can move, in compressor quilt Driving and the flowing space portion 210 produce refrigerant flowing in the case of, described 200 pairs of cylinder barrels of seal member 120 and the framework 110 pressurize, therefore, it is possible to prevent by the seal member 200 plus-pressure generation cylinder barrel 120 change Shape.

Hereinafter, the flow regime of refrigerant and the effect of seal member are illustrated during working Linearkompressor.

Figure 10 is the sectional view of the refrigerant flow regime for the Linearkompressor for representing the embodiment of the present invention, and Figure 11 is to represent The figure of the mobile status of seal member during the Linearkompressor driving of the embodiment of the present invention.

First, reference picture 10, illustrate the flowing of the refrigerant in the Linearkompressor of the present embodiment.

Reference picture 10, refrigerant flows into the inside of housing 101 by sucting 104, and is flowed by sucking guide part 155 To the inside of absorbing silencer 150.

Then, refrigerant flows into the second muffler 153 via the first muffler 151 of the absorbing silencer 150, and It flow to the inside of piston 130.In the process, the suction noise of refrigerant can be reduced.

In addition, refrigerant is while via the first filter 310 being arranged in the absorbing silencer 150, regulation Foreign matter more than size (25 μm) is filtered.

The refrigerant for being present in the inside of the piston 130 by the absorbing silencer 150 is opened in inlet valve 135 When, compression stroke P is inhaled into by inlet hole 133.

When the refrigerant pressure of the compression stroke P turns into more than discharge pressure, dump valve 161 is opened, and refrigerant leads to Cross the discharge space that the dump valve 161 opened is discharged to discharge cover 160, and the ring pipe by being combined with the discharge cover 160 165 flow to discharge unit 105, are discharged to the outside of compressor 100.

It additionally, there are at least a portion refrigerant in the refrigerant in the discharge space of the discharge cover 160, Neng Gou Space between the framework 110 of cylinder barrel 120 is that the flowing space portion 210 is flowed.Specifically, refrigerant is via formation In framework 110 the inner peripheral surface of recess 117 and the cylinder barrel 120 cylinder barrel flange portion 125 outer peripheral face between the flowing space, court Flowed to the outer peripheral face of cylinder barrel main body 121.

Now, refrigerant can pass through the installation portion of the mounting surface 127 positioned at the cylinder barrel flange portion 125 and framework 110 The second filter 320 between 113, in the process foreign matter more than prescribed level (2 μm) filtered.Moreover, in refrigerant Oil component adsorbed by second filter 320.

The refrigerant that have passed through second filter 320 is flowed into the multiple of the outer peripheral face that is formed at cylinder barrel main body 121 Gas inflow part 122.Then, refrigerant is while the 3rd filter 330 possessed by the gas inflow part 122, Foreign matter more than prescribed level (1 μm) included in refrigerant is filtered, and the oil component included in refrigerant is adsorbed.

The refrigerant that have passed through the 3rd filter 330 is flowed into the inside of cylinder barrel 120 by spray nozzle part 123, is located at Between the inner peripheral surface of the cylinder barrel 120 and the outer peripheral face of piston 130, so that inner peripheral surface of the piston 130 from the cylinder barrel 120 The mode of separation works (gas bearing).

Now, diameter of the inlet portion 123a diameters than export department 123b of the spray nozzle part 123 is big, therefore with refrigerant On the basis of flow direction, the refrigerant flow section in the spray nozzle part 123 is gradually reduced.It is used as one, the inlet portion More than twice of value of 123a a diameter of export department 123b diameters.

As described above, the inside of high-pressure gas refrigerant to the cylinder barrel 120 is roundabout and to reciprocating 130, piston To bearing effect, therefore, it is possible to reduce the abrasion between piston 130 and cylinder barrel 120.It is additionally, since without using for bearing Oil, therefore, the frictional dissipation as caused by oil will not be also produced even if the high-speed cruising of compressor 100.

Also, possess multiple filters on the path of the refrigerant in the internal flow of compressor 100, so as to remove Foreign matter included in refrigerant, therefore, it is possible to improve the reliability of the refrigerant worked as gas bearing.Therefore, it is possible to Prevent from producing the phenomenon of abrasion in refrigerant on piston 130 or cylinder barrel 120 because of the foreign matter included.

Moreover, using the multiple filter remove refrigerant included in oil component, so as to prevent by Frictional dissipation caused by oil component.

On the other hand, the refrigerant flowed in the flowing space portion 210 acts on the seal member 200.That is, institute The pressure for stating refrigerant acts on the seal member 200, and the seal member 200 is from the sealing recess 220 to the cylinder Moved between 120 the first rake 128 of cylinder and the second rake 113 of the framework 110.

Then, the seal member 200 is close to the cylinder barrel 120 and framework 110, to the cylinder barrel 120 and framework 110 Between the space that separates closed, as one, to the space between the rake 113 of the first rake 128 and second Closed.Therefore, it is possible to prevent the refrigerant in the flowing space portion 210 by between the cylinder barrel 120 and framework 110 points Every spatial leaks to outside.

On the other hand, when the driving of the Linearkompressor 100 is interrupted, the system of the seal member 200 is acted on The pressure of cryogen is released from, therefore the clinging force between the seal member 200 and the cylinder barrel 120 and framework 110 dies down.Knot Really, the seal member 200 be in can in the sealing recess 220 state that move freely, as one, in from institute State the state (being represented by dashed line) that the first rake 128 and the second rake 113 separate.

According to this effect, seal member 200 can be tight with cylinder barrel 120 and framework 110 only when compressor 100 is driven Patch, and the sealing in the flowing space portion 210 is carried out, put on the cylinder barrel therefore, it is possible to reduce from the seal member 200 120 power.Thus, it is possible to prevent the deformation of the cylinder barrel 120.

Moreover, the seal member 200 is in the state that can be moved in the sealing recess 220, therefore, in assembling institute When stating cylinder barrel 120 with framework 110, the interference effect of the seal member 200 can be prevented.As a result, the cylinder barrel 120 and framework 110 assembling becomes easy.

Claims (9)

1. a kind of Linearkompressor, it is characterised in that including：

Housing, is provided with sucting；

Cylinder barrel, positioned at the inside of the housing, forms the compression stroke of refrigerant, and be made up of aluminum；

Framework, is combined with the outside of the cylinder barrel；

Piston, can be set in the way of axially inside the moving back and forth of the cylinder barrel；

Dump valve, the refrigeration compressed positioned at the side of the cylinder barrel, the compression stroke selectively discharged in the refrigerant Agent；

Flowing space portion, is formed between the cylinder barrel and the framework, in the refrigerant discharged for use by the dump valve At least a portion refrigerant flows；

Recess is sealed, is connected with the flowing space portion, and forms the outer peripheral face and the inner circumferential of the framework in the cylinder barrel Between face；And

Seal member, the size with less than the sealing recess is arranged at the sealing recess in the way of it can move Inside,

When the part of refrigerant in the refrigerant discharged from the dump valve is recessed to the sealing via the flowing space portion When portion is flowed, the seal member is close to by the pressure of refrigerant with the cylinder barrel and the framework, to the framework and institute The space separated between cylinder barrel is stated to be closed,

When the piston stop motion, the pressure of the refrigerant is released from, and the seal member is in can be in the cylinder The state moved in cylinder recess.

2. Linearkompressor according to claim 1, it is characterised in that

The radial direction of the sealing recess is highly formed larger than the diameter of the seal member.

3. Linearkompressor according to claim 1, it is characterised in that

The axial length of the sealing recess is formed larger than the diameter of the seal member.

4. Linearkompressor according to claim 1, it is characterised in that

On the basis of the flow direction of the refrigerant, the flow section of the sealing recess is more than the flowing space portion Flow section.

5. Linearkompressor according to claim 1, it is characterised in that

The framework includes recess forming portion,

The recess forming portion forms at least one side of the sealing recess, and from the inner peripheral surface of the framework, radial direction is recessed laterally Fall into.

6. Linearkompressor according to claim 5, it is characterised in that

The cylinder barrel includes the first rake,

First rake formation is prolonged in position corresponding with the recess forming portion, the direction reduced to the external diameter of the cylinder barrel It is long.

7. Linearkompressor according to claim 6, it is characterised in that

The seal member is moved along first rake.

8. Linearkompressor according to claim 5, it is characterised in that

The framework includes the second rake,

Second rake is from the recess forming portion to inward side to obliquely extending.

9. Linearkompressor according to claim 1, it is characterised in that

Also include spray nozzle part, the spray nozzle part is formed at the outer peripheral face of the cylinder barrel, by the refrigerant in the flowing space portion to institute The inner peripheral surface side for stating cylinder barrel is guided.