CN106286208B - Linear compressor and refrigeration equipment with same - Google Patents
Linear compressor and refrigeration equipment with same Download PDFInfo
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- CN106286208B CN106286208B CN201510257566.7A CN201510257566A CN106286208B CN 106286208 B CN106286208 B CN 106286208B CN 201510257566 A CN201510257566 A CN 201510257566A CN 106286208 B CN106286208 B CN 106286208B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000011796 hollow space material Substances 0.000 claims description 6
- 210000003734 kidney Anatomy 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- REEBJQTUIJTGAL-UHFFFAOYSA-N 3-pyridin-1-ium-1-ylpropane-1-sulfonate Chemical compound [O-]S(=O)(=O)CCC[N+]1=CC=CC=C1 REEBJQTUIJTGAL-UHFFFAOYSA-N 0.000 claims description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
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- 239000007787 solid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
The invention provides a linear compressor and refrigeration equipment with the same, wherein the linear compressor comprises a first cylinder, a second cylinder and a corresponding first piston and a second piston which are arranged at two sides in a shell, the first piston and the second piston are fixedly connected through a connecting piece, hollow parts which are mutually communicated are arranged in the first piston, the second piston and the connecting piece, and a linear motor enables the first piston and the second piston to reciprocate and generates compressed gas in a compression chamber. The elastic member provides elastic restoring force to the first piston and the second piston. The gas to be compressed entering from the gas inlet arranged on the connecting piece is alternately compressed and discharged respectively. The gas to be compressed enters the compression chamber from the connecting piece between the two pistons of the linear compressor, so that the suction overheating can be reduced, and the volumetric efficiency of the compressor is improved; meanwhile, the stroke is small, the service lives of the two pistons are long, and the reliability is improved. The invention also provides refrigeration equipment with the linear compressor.
Description
Technical field
The present invention relates to compressor field more particularly to a kind of Linearkompressor and with its refrigeration equipment.
Background technique
Currently, reciprocating compressor all has the component of similar crankshaft, it is past for the turning moment of motor to be converted to piston
The driving force moved again.The mechanical friction loss that this movement conversion results in compressor is very big.To solve this problem, in recent years
Linear compressor is developed in industry.Linear compressor eliminates the crankshaft of reciprocating compressor, and piston is by the direct band of linear motor
It is dynamic, it moves reciprocatingly in cylinder, completes the compressed action to refrigerant.Since components are reduced, complete machine structure becomes simply, no
Compression efficiency is improved only, noise when compressor is run also becomes smaller, and is therefore widely used in the households such as refrigerator, air-conditioning
Electric appliance.Traditional linear compressor basic structure includes a cylinder frame, piston, motor, a bullet moved back and forth in cylinder frame
Spring, valve group, supporting element and oil pumping system.Piston, supporting element and spring form resonator system, under linear motor driving effect,
Piston as spring oscillator does linear reciprocating motion in cylinder, to refrigerant air-breathing, compression and exhaust, completes a refrigeration and follows
Ring.When motor driven frequency is consistent with the intrinsic frequency of resonator system, motor can push piston acting with very little driving force,
The efficiency highest of compressor at this time.But due to using a cylinder frame and a piston, piston stroke is big, and part easily deforms,
It is easy to cause the parts fatigue failure such as piston, spring and supporting element.
A kind of existing twin-tub variable capacity linear compressor, this kind of compressor are driven using single motor, inlet valve and row
Air valve use same side structure, this structure be mainly characterized by inlet valve and exhaust valve is bolted on cylinder head, so
Setting cause to stroke control it is more demanding, if travel deviation target value is too many, will cause volumetric loss or piston hit cylinder etc.
Problem causes compressor efficiency seriously to reduce, reliability decrease.
The patent document of Publication No. CN 101839229A discloses a kind of double-cylinder and electromagnetic air compressor, the compressor
Using solenoid actuated, it is mainly used for air compression, structure is complicated, and the amount of leakage of gas is very big, and piston assembly difficulty, and two
The concentricity of piston assembly is difficult to ensure.
The patent document of Publication No. CN 1200789A discloses a kind of Double-cylinder linear compressor, and the compressor is using suction
Air valve and exhaust valve heteropleural structure.When compressor operating, inlet valve air-breathing from two sides, high pressure gas is from centre after overcompression
Discharge.Although the structure can reduce piston stroke, but since motor is fixed on around cylinder, high pressure gas from twin-tub it
Between be discharged, have many heats and motor passed to heat exchange pattern, electric efficiency is caused to decline.Meanwhile high pressure gas passes through
The connecting rod of internal piston is crossed, so that in addition to still suffering from high warm load other than by the effect of the load of gas force when pistons work,
It will cause the service life degradation of piston under this working condition, reliability reduces.In addition, comparing from intermediate exhaust air technique
All there is hidden danger in the processing of difference, especially inner hole, the connection of outlet hose and reliability of hose etc..
Therefore, the control precision and efficiency that can be improved compressor how to be provided, it is linear that job stability is high, noise is low
Compressor and refrigeration equipment with it, become those skilled in the art's important technological problems to be solved.
Summary of the invention
In order to overcome the deficiencies of the prior art, it is an object of the present invention to provide a kind of control precision and high-efficient, work
The Linearkompressor that stability is high, noise is low.
It is a further object of the present invention to provide a kind of refrigeration equipments with Linearkompressor.
To realize said one purpose, the according to a first aspect of the present invention Linearkompressor of embodiment, the Linearkompressor
Compressed gas and the compressed gas is discharged to outside in discharge chambe, which includes：Two sides in shell are set
First cylinder and the second cylinder are reciprocally inlaid in the first cylinder and two cylinders and by the first cylinder and respectively
The inside of two cylinders is divided into the first piston and second piston of discharge chambe, solid by connector between first piston and second piston
The inside of fixed connection, first piston, second piston and connector has interconnected hollow space.The Linearkompressor also wraps
It includes:Linear motor and elastic component, linear motor make first piston and second piston move back and forth and generate in discharge chambe
Compressed gas.Elastic component is mounted between first piston and second piston, and is provided elasticity to first piston and second piston and returned
Multiple power.Be provided with gas access on connector, gas access via connector and first piston and second piston hollow space
Connection, by gas access enter gas to be compressed pass alternately between respectively the first check valve into the first cylinder discharge chambe and
Enter the discharge chambe of the second cylinder by second one-way valve and is discharged by compression.
As can be seen from the above scheme, Linearkompressor of the invention, gas to be compressed is from the connector between two pistons
Gas access enters first piston and second piston and is alternately discharged again, can reduce suction superheat, when two pistons works only by
The load of gas force acts on, and is not subject to high warm load, and the service life of two pistons is long, and reliability improves, in addition, linear electrical
Owner's body is positioned corresponding in shell one of them side of two cylinders, and less heat passes to motor with heat exchange pattern,
Electric efficiency improves, and the expansion process of the first cylinder is synchronous with the compression process of the second cylinder, and expansion work is easy to be absorbed, and reduces
Power input to a machine, volumetric efficiency is low caused by increasing when solving linear compressor transfiguration adjusting as clearance asks
Topic, even if compressor is made to still maintain higher efficiency when big clearance is run.
Further, the first cylinder frame and the second cylinder frame being oppositely arranged, the first cylinder frame and the second cylinder frame are provided in shell
In be respectively equipped with the first cylinder and the second cylinder.It, can be with it can be seen that by assembling the first cylinder frame and the second cylinder frame in the housing
Convenient for the manufacture of cylinder, assembly efficiency is promoted.
Further, connector includes drive plate and the hollow cylinder that is connected with drive plate, drive plate, first piston,
Second piston includes the first connecting hole for connecting component connection, and gas access is equipped on the periphery of hollow cylinder.
Further, connector includes the first connector connecting with first piston and connect with second piston second
Connector, and the first connector is fixedly connected with the second connector.
Further, the hollow cylinder side opposite with drive plate is provided with connection bump, and elastic component is flat spring, plate
The middle section of spring has the centre bore being connected to first piston and second piston, part and company of the flat spring adjacent to centre bore
It connects protrusion and is equipped with the second connecting hole connected for connecting component, middle section and drive plate link, and the peripheral part of flat spring is solid
It is scheduled in shell.
Further, the first cylinder frame is equipped with fixed plate, and the peripheral part of flat spring and the second cylinder are provided with multiple one
One corresponding fixed hole, is equipped with permanent opening corresponding with multiple fixed holes in fixed plate, and connecting component passes through solid
Determine through-hole and permanent opening to be immobilized in the shell the peripheral part of flat spring.
Further, flat spring is multiple, is equipped with cushion block between adjacent flat spring two-by-two.
Further, elastic component is the first helical spring, and the first helical spring is multiple, wherein first group of first spiral shell
The both ends of rotation spring are fixed between connector and the first cylinder, the both ends of second group of first helical spring and first group of first spiral shell
The both ends of rotation spring are fixed on correspondingly between connector and the second cylinder.
Further, elastic component is the second helical spring and third helical spring, the hollow parts set of the second helical spring
It is located at the periphery of connector and first piston, the hollow parts of third helical spring are set in the periphery of second piston, the second spiral shell
The both ends of rotation spring are fixed between connector and the first cylinder frame, and connector and the second cylinder are fixed in the both ends of third helical spring
Between frame.
Further, it is respectively equipped on the first cylinder frame and the second cylinder frame by the compressed gas of the discharge chambe from the first cylinder
First exhaust valve module that body is discharged to outside the first cylinder frame and by the compressed gas of the discharge chambe from the second cylinder to the second cylinder
The second exhaust valve module being discharged outside frame, first exhaust valve module and second exhaust valve module include：Valve group gasket, exhaust
Valve, exhaust valve spring, spring supporting gasket, exhaust valve spring supporting element and exhausting silencer lid.
Further, the first cylinder frame is equipped with fixed plate, and linear motor includes external stator, inner stator and mover, outer fixed
Sub- one end is fixed on the bracket of the first cylinder frame, and the other end is supported by fixed plate, and inner stator is fixed on the first gas in a manner of interference
On the periphery wall of cylinder, the end of mover is mutually fixed by locating piece with connector and the first cylinder frame.
Further, in end face of the first piston towards discharge chambe equipped with the first aperture and corresponding to the first of the first aperture
Check valve, towards the end face of discharge chambe is equipped with the second aperture in second piston and corresponding to the second one-way valve of the second aperture, the
One check valve and second one-way valve are selectively turned on and are closed respectively responsive to respective pressure at both sides.
Further, first piston and second piston include hollow cylinder open at one end, and hollow cylinder, which has, to be set
There is one end of opening, is equipped with boss for being fixedly connected with connector in one end with the opening, the first aperture and the
Two apertures include the conical round table extended towards on opening direction.
Further, the first aperture and the second aperture are respectively multiple, on the end face of first piston and second piston
In symmetrical fan-shaped arrangement.
Further, the first check valve and second one-way valve are butterfly leaf valve, and butterfly leaf valve includes covering first
The fan-shaped cantilever valve of a pair of aperture and the second aperture, the central part between a pair of fan-shaped cantilever valve are equipped with mounting hole, are pacifying
It fills and is equipped with kidney slot between hole and each fan-shaped cantilever valve.
Further, the first cylinder frame and the second cylinder frame respectively include bracket, and bracket is by cast aluminium or PEEK, PPS high-strength plastic
Material is made.
In order to reach above-mentioned another object, a kind of refrigeration equipment of embodiment, the refrigeration are set according to a second aspect of the present invention
Standby includes the Linearkompressor of first aspect present invention embodiment, since above-mentioned Linearkompressor has above-mentioned technique effect,
Refrigeration equipment with the Linearkompressor should also have corresponding technical effect.
Compared with prior art, Linearkompressor of the invention and the refrigeration equipment with it can obtain following
Beneficial effect：
1, it solves the problems, such as single cylinder refrigeration linear compressor piston motion off-centring as caused by gas force, improves
Control precision of the controller to piston stroke；
2, opposite single cylinder structure, piston stroke reduce half, improve the reliability of part, reduce the production of part
Cost solves the problems, such as resonant springs fatigue fracture or placticity failure；
3, twin-tub is oppositely arranged, and balance is good, solves the defect that compressor pressure pulsation is big, noise is high；
4, suction, exhaust valve is arranged apart, reduce suction superheat, improves the volumetric efficiency of compressor；
5, since using double cylinders, the expansion process of a cylinder and the compression process of another cylinder are synchronous, expansion work
It is easy to be absorbed, reduces power input to a machine, caused by increasing when solving linear compressor transfiguration adjusting as clearance
The low problem of volumetric efficiency, even if compressor is made to still maintain higher efficiency when big clearance is run.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Fig. 1 is the schematic diagram of internal structure of the Linearkompressor of one embodiment of the invention；
Fig. 2 is the schematic cross-sectional view of Fig. 1；
Fig. 3 is the connecting-piece structure schematic diagram of Linearkompressor of the present invention；
Fig. 4 is the flat spring structural schematic diagram as a kind of mode of elastic component of Linearkompressor of the present invention；
Fig. 5 is the assembling schematic diagram of flat spring shown in Fig. 4；
Fig. 6 is the assembly explosion of the first helical spring as elastic component another way of Linearkompressor of the present invention
Figure；
Fig. 7 is the assembling structure schematic diagram of Fig. 6；
Fig. 8 is the second helical spring and third spiral bullet as elastic component yet another approach of Linearkompressor of the present invention
The assembling structure schematic diagram of spring；
Fig. 9 is the Structure of mover schematic diagram of Linearkompressor of the present invention；
Figure 10 is the exhaust valve component structural schematic diagram of Linearkompressor of the present invention；
Figure 11 is the piston schematic cross-sectional view of Linearkompressor of the present invention；
Figure 12 is the piston schematic side view of Linearkompressor of the present invention；
Figure 13 is the one-way valve structures schematic diagram of Linearkompressor of the present invention；
Figure 14 is a kind of perspective view of the explosion of moving parts of Linearkompressor of the present invention；
Figure 15 is the cylinder frame structural schematic diagram of Linearkompressor of the present invention；
Figure 16 and Figure 17 is the schematic diagram that Linearkompressor suction and discharge rule of the present invention changes with piston motion；
Figure 18 is that the twin-tub of Linearkompressor of the present invention compresses the pressure history in indoor gas a cycle；
Figure 19 is that the twin-tub of Linearkompressor of the present invention compresses in indoor gas a cycle and the comparison of single cylinder structure is bent
Line；
In figure：
1000. Linearkompressor；100. the first cylinder frame；110. the first cylinder；120,220. discharge chambe；130. fixed plate；
131. permanent opening；140,230. bracket；141,232. oil pump mounting portions；142,234. annular oil groove；143,234. oil outlet；
144,235. access road；145,236. circular hole；150. first exhaust valve modules；151,241. valve group gaskets；152,242. row
Air valve；153,243. exhaust valve spring；154,244 spring supporting gaskets；155,245. being vented valve spring supporting element；156,246. row
Gas, which is eliminated the noise, to be covered；160. first piston；161,251. hollow cylinder；162. first apertures；163,253, opening；164,254. convex
Platform；165,255. conical round table；170. first check valves；171,261. fan-shaped cantilever valves；172,262. mounting hole；173,263.
Kidney slot；
200. second cylinder framves；210. second cylinders；231,420. fixed hole；240. second exhaust valve modules；250. the
Two pistons；252. second apertures；260 second one-way valves；
300. connector；301. drive plate；302. hollow cylinder；302A. gas access；303. connection bump；310. the
A connection piece；320. second connectors；
400. flat spring；410. centre bore；430. cushion block；440. connection bolts；
500. first helical springs；
600. second helical springs；
700. third helical springs；
800. linear motor；810. external stator；820. inner stator；830 movers；831. magnet steel；832. windages reduce mouth；
833. positioning port；834. connector；
H1. the first connecting hole；H2. the second connecting hole；H3. location hole；H4. valve fixation hole；
L1. valve line；L2. valve wire casing.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right with reference to the accompanying drawings and embodiments
Linearkompressor of the invention and the refrigeration equipment with the Linearkompressor are further elaborated.Obviously, described
Embodiment be only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to guarantor of the present invention
The range of shield.
Linearkompressor according to an embodiment of the present invention is described below with reference to Fig. 1 and Fig. 2, Linearkompressor 1000 includes shell
Body (not shown), the first cylinder frame 100 and the second cylinder frame 200, the first cylinder frame 100 and the second cylinder frame 200 is arranged in two sides in shell
With shell can be it is integrally formed be also possible to it is seperated, in the present embodiment using seperated.First piston 160 and second
Piston 250 is reciprocally inlaid in the first cylinder 110 of the first cylinder frame 100 and the second cylinder of the second cylinder frame 200 respectively
In 210, and the inside of the first cylinder 110 and the second cylinder 210 is divided into discharge chambe 120 and discharge chambe 220.In first piston
It is equipped with the first connector 310 and the second connector 320 that are fixedly connected with two pistons between 160 and second piston 250, first
Piston 160, second piston 250, the first connector 310 and the second connector 320 inside there is interconnected hollow space,
In following embodiment, linear motor 800 is located at 110 side of the first cylinder, it is clear that linear motor 800 is located at
Second cylinder, 210 side and the situation that other structures are made with relative adaptability modification, can also with referential obtain, and all at this
Within the protection scope of invention.Linear motor 800 moves back and forth first piston 160 and second piston 250 and in discharge chambe
120 and discharge chambe 130 in be alternately produced compressed gas, linear motor 800, first piston 160, the first connector 310 and
Two connectors 320 and second piston 250 are fixedly secured to one another, and are installed between first piston 160 and second piston 250 flexible
Part, the elastic component provide elastic-restoring force to first piston 160 and second piston 250, in the first connector 310 and the second connection
Part 320 is equipped with gas access, and gas access is via the first connector 310 and the second connector 320 and first piston 160 and the
The hollow space of two pistons 250 is connected to, and first piston 160 passes through the first connection under the driving force effect of linear motor 800
While part 310 and the second connector 320 drive second piston 250 to move back and forth together, corresponding flexible deformation occurs for elastic component
And the elastic-restoring force contrary with driving force is generated, thus in first piston 160 and second piston 250 in linear motor
800 and resilient force under when moving back and forth, the gas part to be compressed of such as refrigerant entered by gas access is respectively alternately
Enter the discharge chambe 120 of the first cylinder 110 by first piston 160 and enters the pressure of the second cylinder 210 by second piston 250
Contracting room 220, in turn, gas to be compressed by first piston 160 or second piston 250 compress and be discharged to the first cylinder 110 or
Except second cylinder 210.
Further description is done to connector 300 below in conjunction with Fig. 3, connector 300 includes drive plate 301, is being driven
Disk 301, first piston 160, second piston 250 are equipped with the first connecting hole H1 connect for connecting component, a hollow cylinder 302 and
Drive plate 301 is connected, and gas access 302A is offered on the periphery of hollow cylinder 302, it is preferred that gas access 302A is edge
The rectangular slot of the multiple uniform intervals arrangement radially extended, gas access 302A are connected with the extraneous gas source of gas to be compressed
It is logical, air-breathing is carried out by the connector 300 between two pistons, linear motor 800 is not easily susceptible to excessive heat, motor effect
Rate can be greatly improved.Preferably, the transverse plane of drive plate 301 is equipped with location hole and the second connecting hole H2, connecting component are worn
It crosses the second connecting hole H2 and is fixedly connected with connector 300 with the mover 830 of linear motor 800, since drive plate 301 is equipped with
Location hole can guarantee the assembly precision of drive plate 301 and elastic component and first piston 160 very well.
Connector 300 can be set into the first connector 310 connecting with first piston 160 and connect with second piston 250
The second connector 320 connect, the first connector 310 and the second connector 320 respectively with first piston 160 and second piston 250
Split settings, it should be noted that the first connector 310 and the second connector 320 can also be designed to respectively with first piston
160 and second piston 250 one.In addition, according to actual needs, it can be using a connector or two even more than even
Fitting.
One embodiment that elastic component uses flat spring, flat spring 400 are shown in conjunction with reference Fig. 2, Fig. 3 and Fig. 4, Fig. 4
Middle section there is the centre bore 410 that can be connected to first piston 160 and second piston 250, in order to the fixation of flat spring 400
Connection, is all provided in the hollow cylinder 302 of above-mentioned first connector 310 and the second connector 320 side opposite with drive plate 301
It is equipped with connection bump 303, and 303 phase of connection bump of the connection bump 303 of the first connector 310 and the second connector 320
It is set between the two to setting and by flat spring 400.Flat spring 400 is set adjacent to the part of centre bore 410 and each connection bump 303
There is the second connecting hole H2 for connecting component connection, the peripheral part of flat spring 400 is immobilized in the shell, then, when linear electricity
When the work of motivation 800, the middle section of flat spring 400 is in the first connector 310 and the second connector 320 with first piston
160 and second piston 250 move during generate the flexible deformation for deviateing its peripheral part, so set, flat spring 400
Flexible deformation is stable, reliable.
A kind of mode that peripheral part as flat spring 400 is immobilized in the shell, referring to figs. 2 and 5, in the first cylinder frame
100 are equipped with fixed plate 130, and the peripheral part of flat spring 400 and the second cylinder frame 200 are equipped with multiple one-to-one fixed holes
420 and 231, permanent opening 131 corresponding with multiple fixed holes 420 and 231 is equipped in fixed plate 130, which opens
Mouth 131 is preferably set to blind hole, and connecting component is fixed by flat spring 400 by fixed hole 420 and 231 and permanent opening 131,
Alternatively, it is also possible to which multiple fixed card columns are arranged in the housing, fixed card column is clamped one by one with fixed hole 420 and 231, thus real
Now flat spring 400 is immobilized in the shell.Further, flat spring 400 is set as multiple, adjacent flat spring 400 two-by-two it
Between be equipped with cushion block 430, in this case, ensure that each flat spring 400 will not when first piston 160 and second piston 250 move
It is contacted due to deformation, and can guarantee that 400 center of flat spring can generate biggish displacement, to make 160 He of first piston
Second piston 250 has enough move distances to compress and absorb gas, as a further improvement, in the present embodiment, even
Relay part is equipped with the shaft shoulder using connection bolt 440, the middle section of connection bolt 440, compresses flat spring by shaft shoulder end face
400, so that the peripheral part of flat spring 400 is fixed.
Another embodiment of elastic component, in this embodiment, improvement are shown in conjunction with reference Fig. 2, Fig. 6 and Fig. 7
It is that elastic component is distinguished using multiple first helical springs 500, and only with one with first piston 160 and second piston 250
The connector 300 of connection.First group of first helical spring 500 that wherein quantity is four is compressively fixed on connector 300
And first between cylinder 110, quantity is also that four second group of first helical springs 500 are compressively fixed on connector 300
And second between cylinder 210, above-mentioned first group four the first helical springs 500 and second group of four 500 phase of the first helical spring
Connector 300 is uniformly distributed and is symmetrical arranged on contour.To in the reciprocal of first piston 160 and second piston 250
In movement, first group of first helical spring 500 and second group of first helical spring 500 are alternately further compressed to provide bullet
Property restoring force, this kind of structure be able to maintain first piston 160 and second piston 250 and move steady, and then ensure that linear compression
1000 air-breathing of machine, the stabilization of exhaust.
Another embodiment of elastic component is shown in conjunction with reference Fig. 2, Fig. 8, in this embodiment, improvement is bullet
Property part use the second helical spring 600 and third helical spring 700, wherein the hollow parts of the second helical spring 600 are set in
The periphery of connector 300 and first piston 160, the hollow parts of third helical spring 700 are set in the outer of second piston 250
The both ends of week, the second helical spring 600 and third helical spring 700 are individually fixed between connector 300 and the first cylinder frame 100
And between connector 300 and the second cylinder frame 200.Due to using two helical springs, Linearkompressor 1000 not only can guarantee
Air-breathing, the stabilization of exhaust, and assembly efficiency is higher.
It can be seen from several embodiments above with respect to elastic component when elastic component uses flat spring 400, in order to guarantee
Flat spring 400 and its good location and fixation with first piston 160 and second piston 250, connector 300 use two, i.e.,
First connector 310 and the second connector 320；When elastic component using the first helical spring 500 or uses the second helical spring
600 and when third helical spring 700, connector 300 can both reduce cost in this way, also improve only with one
Assembly efficiency.
Referring to figs. 2 and 9, the linear motor 800 that Linearkompressor 1000 uses includes external stator 810, inner stator 820
With mover 830, the both ends of external stator 810 are positioned and are fixed by the bracket 140 and fixed plate 130 of the first cylinder frame 100 respectively, outside
Loop coil is wound with inside stator 810, outside is support frame.Inner stator 820 is fixed on the first cylinder 110 in a manner of interference
On periphery wall, specifically, can be realized by cold pressing or hot cover process.By locating piece make mover 830 end, first
Connector 310,160 three of first piston fix, and the first connector 310, mover are fixed by locating piece in the end of mover 830
830 are assembled together with first piston 160 by location hole positioning and locating piece, and locating piece can use positioning pin.Mover 830
Total uses cylinder type closed at one end, and end outer ring is fixed with annular magnetic steel 831, for providing magnetic field, dynamic
It is provided with windage on the closed end of son 830 and reduces mouth 832, and the positioning connecting by connecting component with the first connecting hole H1
Mouth 833 and the connector 834 being connect with first piston 160 or second piston 250.The columnar structured branch for being conducive to elastic component
Support, it is possible to reduce the deformation of part in 1000 operational process of Linearkompressor.
With reference to Fig. 2 and Figure 10,150 He of first exhaust valve module is respectively equipped on the first cylinder frame 100 and the second cylinder frame 200
Second exhaust valve module 240, first exhaust valve module 150 is by the compressed gas of the discharge chambe 120 in the first cylinder 110 to
The external discharge of one cylinder frame 100, second exhaust valve module 240 by the compressed gas of the discharge chambe 220 in the second cylinder 210 to
The external discharge of second cylinder frame 200, first exhaust valve module 150 and second exhaust valve module 240 include：Valve group gasket 151
With 241, exhaust valve 152 and 242, exhaust valve spring 153 and 243, spring support pad 154 and 244, exhaust valve spring supporting element 155
With 245 and exhausting silencer lid 156 and 246.The high pressure gas of discharge enters refrigeration system to discharge chamber, then by exhaust pipe,
Complete refrigeration cycle.Wherein, exhaust valve 152 and 242 is typically designed as taper, common PEEK material in materials'use engineering,
Exhaust valve spring 153 and 243 can use cylindrical spring or taper spring, and spring support pad 154 and 244 is moulded using PPS or PBT
Material is used for damping, while can guarantee there is enough wearabilities.
With reference to Fig. 2, Figure 11 and Figure 12, there is selection as by the gas to be compressed in first piston 160 and second piston 250
Property be discharged to the first cylinder 110 discharge chambe 120 and the second cylinder 210 discharge chambe 220 a kind of embodiment, it is above-mentioned each
Linearkompressor 1000 in embodiment includes the first check valve 170 and second one-way valve 260, and the setting of the first check valve 170 exists
First piston 160 is towards discharge chambe 120 and is equipped on the end face of the first aperture 162, and second one-way valve 260 is arranged in second piston
On 250 end face towards discharge chambe 220 and equipped with the second aperture 252, the first check valve 170 and second one-way valve 260 are rung respectively
It should selectively turn on and close in respective pressure at both sides, thus, it can by the gas to be compressed that gas access 302A enters
To enter the discharge chambe 120 of the first cylinder 110 and the pressure of the second cylinder 210 by the first check valve 170 and second one-way valve 260
Contracting room 220.Further, first piston 160 and second piston 250 are set as the hollow cylinder with open at one end 163 and 253
161 and 251, hollow cylinder 161 and 251 has the end face for being equipped with opening 163 and 253, and being open, 163 and 253 one end are set respectively
There are the boss 164 and 254 for being fixedly connected with the first connector 310 and the second connector 320, the first aperture 162 and second
Aperture 252 includes towards the conical round table 165 and 255 that upwardly extends of 163 and 253 sides of opening, which can be with
Pressure of inspiration(Pi) loss is reduced, and does not influence the fixation of the first check valve 170 and second one-way valve 260.In addition, piston wall thickness is to set
It is preferred for 2-5mm, it is ensured that tensile strength.Preferably, the first aperture 162 and the second aperture 252 are respectively multiple, first
In symmetrical fan-shaped arrangement on the end face of piston 160 and second piston 250；In this way, the flowing of air-flow can it is more symmetrical and
Steadily.In addition, the end face in first piston 160 and second piston 250 be additionally provided with for respectively with the first check valve 170 and the
The valve fixation hole H4 that the mounting hole 172 and 262 of two check valves 260 is fixedly connected, in the first aperture 162 and the second aperture 252
Border is equipped with the valve line L1 of width 0.3-0.6mm, and the valve wire casing L2 of width 0.5-1mm is equipped with around valve line L1, can be subtracted in this way
Oily viscous force, increases the sealing performance of the first check valve 170 and second one-way valve 260 in few valve block operational process.To guarantee
The suitable throughput of gas, the first aperture 162 and the second aperture 252 are preferably set asExtremely
It is corresponding for the first aperture 162 and the second aperture 252 using symmetric fanning arrangement with reference to Figure 12 and Figure 13,
First check valve 170 and second one-way valve 260 use butterfly leaf valve, and a pair of of sector cantilever valve 171 and 261 is for covering first
Aperture 162 and the second aperture 252, the central part between a pair of fan-shaped cantilever valve 171 and 261 is equipped with 172 He of mounting hole
262, there is kidney slot 173 and 263 respectively between mounting hole and fan-shaped cantilever valve 171 and 261, connecting component is each passed through installation
First check valve 170 and second one-way valve 260 are fixedly installed on first piston 160 and second piston 250 by hole 172 and 262,
To guarantee that preferable technical effect, the specific size of butterfly leaf valve are designed to：Waist width L1 is 3.5-6mm, jib-length
L2 is 15-25mm, and arc radius R0 is 1-5mm, and the area of kidney slot 173 and 263 is no more than 10mm2, 173 He of kidney slot
263 can reduce the rigidity of butterfly leaf valve, promote its sensitivity for responding two sides pressure difference.
With reference to Fig. 2 and Figure 14, elastic component is made using the assembly method of moving parts in the embodiment of flat spring below detailed
Describe in detail bright, moving parts include first piston 160, second piston 250, the first check valve 170, second one-way valve 260, flat spring
400, mover 830, the first connector 310 and the second connector 320.Specifically assemble sequence is：First by the first check valve 170
It is bolted with second one-way valve 260 or riveting method is separately fixed at the end face of first piston 160 and second piston 250
On, then first piston 160 is positioned with mover 830 by location hole and positioning pin is assembled together, then at the end of mover 830
Portion is fixed on the first connector 310 by positioning pin, while flat spring 400 is fixed on the first connector 310 and second and is connected
On fitting 320, to also be fixed on the first connector 310 and the second connector 320 together, then each flat spring 400 is installed
Between cushion block 430, finally second piston 250 is fixed on the second connector 320, completes the assembly of entire moving parts.
With reference to Fig. 2 and Figure 15, above-described first cylinder frame 100 includes bracket 140 and the first cylinder 110, the second cylinder frame
200 include bracket 230 and the second cylinder 210, and bracket 140 and 230 is preferably set to outer ring, and by cast aluminium or PEEK, PPS high
Strength plastics material is made, so as to reduce motor flux leakage；First cylinder 110 and the second cylinder 210 use HT200, the casting such as HT250
Iron material is made, and can either guarantee the wearability of part, and can reduce casting cost.Cylinder inside is apart from cylinder head 20-30mm
Place is equipped with the annular oil groove of width 5-10mm, depth 1-3mm, is used for piston lubrication, while taking away partial heat.Due to the first cylinder
110 and second the outer ring of cylinder 210 need fixed inner stator 820, it is therefore desirable to guarantee the fastening strength of inner stator 820, it is desirable that
Tail cylinder thickness t guarantees in 3-6mm.Further, the oil pump installation with freezing oil-in is equipped in bracket 140 and 230
Portion 141 and 232 is equipped with annular oil groove 142 and 233, bracket 140 and 230 in the inner hole of the first cylinder 110 and the second cylinder 210
Endface be equipped with oil outlet 143 and 234.Access road 144 and 235 and annular oil groove 142 and 233 on bracket 140 and 230
And oil outlet 143 and 234 is connected by the circular hole 145 and 236 of a diameter 4-8mm, guarantees the circulation of refrigeration oil.The circular hole
145 and 236 can process realization by drilling.
With reference to Figure 16 and Figure 17, Figure 16 and Figure 17 shows Linearkompressors 1000 of the present invention to use flat spring as elasticity
The suction and discharge of each embodiment of part with piston motion changing rule.According to Figure 16, when first piston 160 and second piston
250 under the action of linear motor 800 and elastic component when moving downward, and the gas in the discharge chambe 120 of the first cylinder 110 is first
An expansion process is first completed, while second piston 250 starts to compress to the gas in the discharge chambe 220 of the second cylinder 210.When
When gas pressure in the discharge chambe 110 of first cylinder 110 is reduced to pressure of inspiration(Pi) or less, the first of the first cylinder 110 is unidirectional
Valve 170 is opened, and then gas to be compressed enters first piston 160 and second via the first connector 310 and the second connector 320
Piston 250 simultaneously travels further into the first cylinder 110, completes air-breathing.Due in the discharge chambe 120 of the first cylinder 110 gas it is swollen
Swollen progress synchronous with compression of the second piston 250 to gas, the expansion work of the discharge chambe 120 of the first cylinder 110 are easy by second
The work done during compression of piston 250 absorbs, to reduce the power consumption of linear motor 800, improves the efficiency of Linearkompressor 1000.
Similarly, when first piston 160 and second piston 250 move right, the expansion process of the discharge chambe 220 of the second cylinder 210 with
The compression process of first piston 160 is synchronous, the characteristics of motion with it is above-mentioned exactly the opposite.
In the embodiment above, in addition to having specified otherwise, above-mentioned first connecting hole H1, the second connecting hole H2 can be spiral shell
Pit, connecting component can be using screw, bolt, studs etc..
Aforementioned present invention Linearkompressor 1000 and traditional single cylinder straight line are shown with reference to Fig. 2, Figure 16 and Figure 17, Figure 16
The changing rule of compressor gas force suffered by piston in one cycle, reflects the excellent spy of Linearkompressor 1000 of the present invention
Property.Single cylinder linear compressor piston back pressure is always pressure of inspiration(Pi), and piston is in a cycle period only by gas in compression chamber
The reaction force of body；And in 1,000 1 cycle periods of Linearkompressor of the present invention, 250 face of first piston 160 and second piston
It is acted on to the side of discharge chambe 120 and discharge chambe 220 by gas force.Linear compressor is different from the master of conventional piston compressor
One of feature is wanted to realize that the transfiguration of compressor is adjusted by piston stroke.According to the analysis of front, single cylinder linear compressor
Piston only has the unilateral effect by air cushion spring force, with the variation of load after compressor start, in the movement of mover 830
The heart can relatively initial rigging position shift, operating condition difference offset can also change.The process control this means that controller is expert at
When need to consider influence caused by the offset of the centre of motion to displacement, it is necessary to stroke is compensated, it is difficult to increase control
Degree.And Linearkompressor 1000 of the present invention, in a cycle period, first piston 160 and second piston 250 are towards discharge chambe
120 and the side of discharge chambe 220 acted on by gas force, the phenomenon that balance is good, and there is no centre of motion offsets.Controller exists
Realizing only need to adjust stroke according to first piston 160 and 250 initial makeup location of second piston when transfiguration is adjusted, without the concern for
Influence of the gas shift amount to stroke, thus control more convenient.
With reference to Fig. 2 and Figure 18, the compression of gas and the second cylinder in the first cylinder 110 of Linearkompressor 1000 of the present invention
The expansion of gas is synchronous in 210 carries out, this is conducive to the absorption of expansion work, can be improved the efficiency of compressor, to solve
The problem of compressor efficiency caused by linear compressor increases in small cooling capacity as piston clearance sharply declines.
With reference to Fig. 2 and Figure 19, relative to single cylinder linear compressor, Linearkompressor 1000 of the present invention is complete in one cycle
At two second compressions and exhaust, thus first piston 160 and the stroke of second piston 250 are reduced to single cylinder under identical running frequency
The half of piston stroke can meet the requirement of cooling capacity in compressor, and since stroke reduces, the deformation of elastic component be can be reduced, the
The deformation of a connection piece 310 and the second connector 320 and the frictional dissipation of first piston 160 and second piston 250 can all decline,
The reliability of Linearkompressor 1000 of the present invention greatly improves.
A kind of refrigeration equipment of embodiment according to a second aspect of the present invention is provided with according to the present invention the in refrigeration equipment
The Linearkompressor of one side embodiment, since the refrigeration equipment uses the Linearkompressor in above-described embodiment, so should
The beneficial effect of refrigeration equipment please refers to above-described embodiment, and details are not described herein, it should be noted that refrigeration equipment includes sky
Tune, refrigerator, wine cabinet etc..
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Preferred forms of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (16)
1. Linearkompressor, compressed gas and the compressed gas is discharged to outside in discharge chambe, including：
The first cylinder and the second cylinder of two sides in shell are set；
It is characterized in that：
It is reciprocably inlaid in inside in first cylinder and the second cylinder and by the first cylinder and the second cylinder respectively
It is divided into the first piston and second piston of discharge chambe, is connected between the first piston and the second piston by the way that connector is fixed
It connects, the inside of the first piston, the second piston and the connector has interconnected hollow space；
It moves back and forth the first piston and the second piston and generates the linear motor of compressed gas in discharge chambe；
It is mounted between the first piston and the second piston, and provides bullet to the first piston and the second piston
The elastic component of property restoring force；
It is set to the gas access on the connector, the gas access is via the connector and the first piston and institute
The hollow space connection for stating second piston, passes alternately between described first by the gas to be compressed that the gas access enters respectively
Piston enters the discharge chambe of first cylinder and enters the discharge chambe of second cylinder by the second piston and pressed
It indents out；
The connector includes drive plate and the hollow cylinder that is connected with the drive plate, the drive plate, the first piston,
The second piston includes the first connecting hole for connecting component connection, and the gas is equipped on the periphery of the hollow cylinder
Entrance.
2. Linearkompressor according to claim 1, it is characterised in that：
It is equipped with the first cylinder frame and the second cylinder frame being oppositely arranged in the shell, divides in the first cylinder frame and the second cylinder frame
It She You not first cylinder and second cylinder.
3. Linearkompressor according to claim 2, it is characterised in that：
The connector includes the first connector connecting with the first piston and the second company connecting with the second piston
Fitting, and first connector is fixedly connected with second connector.
4. Linearkompressor according to claim 3, it is characterised in that：
The hollow cylinder side opposite with the drive plate is provided with connection bump, and the elastic component is flat spring, described
The middle section of flat spring has the centre bore being connected to the first piston and the second piston, and the flat spring is adjacent to institute
The part and the connection bump for stating centre bore are equipped with the second connecting hole for connecting for connecting component, the middle section with it is described
Drive plate linkage, the peripheral part of the flat spring is fixed in the shell.
5. Linearkompressor according to claim 4, it is characterised in that：
The first cylinder frame is equipped with fixed plate, and it is a pair of that the peripheral part of the flat spring and second cylinder are provided with multiple one
The fixed hole answered is equipped with permanent opening corresponding with multiple fixed holes, the interconnecting piece in the fixed plate
The peripheral part of the flat spring is fixed in the shell by part by the fixed hole and the permanent opening.
6. Linearkompressor according to claim 5, it is characterised in that：
The flat spring be it is multiple, the flat spring is equipped with cushion block between any two.
7. Linearkompressor according to claim 1, it is characterised in that：
The elastic component is the first helical spring, and first helical spring is multiple, wherein first group of first helical spring
Both ends are fixed between the connector and first cylinder, both ends of second group of first helical spring and first group the described
The both ends of one helical spring are fixed on correspondingly between the connector and second cylinder.
8. Linearkompressor according to claim 2, it is characterised in that：
The elastic component is the second helical spring and third helical spring, and the hollow parts of second helical spring are set in institute
The periphery of connector and the first piston is stated, the hollow parts of the third helical spring are set in the outer of the second piston
Week, the both ends of second helical spring are fixed between the connector and the first cylinder frame, the third helical spring
Both ends be fixed between the connector and the second cylinder frame.
9. Linearkompressor according to claim 2, it is characterised in that：
It is respectively equipped on the first cylinder frame and the second cylinder frame by the compressed gas of the discharge chambe from the first cylinder to described
The first exhaust valve module that is discharged outside first cylinder frame and by the compressed gas of the discharge chambe from the second cylinder to second cylinder
The second exhaust valve module being discharged outside frame, the first exhaust valve module and the second exhaust valve module include：Valve group pad
Piece, exhaust valve, exhaust valve spring, spring supporting gasket, exhaust valve spring supporting element and exhausting silencer lid.
10. Linearkompressor according to claim 2, it is characterised in that：
The first cylinder frame is equipped with fixed plate, and the linear motor includes external stator, inner stator and mover, the external stator
One end is fixed on the bracket of the first cylinder frame, and the other end is supported by the fixed plate, and the inner stator is consolidated in a manner of interference
It is scheduled on the periphery wall of first cylinder, the end of the mover passes through locating piece and the connector and the first cylinder frame
It is mutually fixed.
11. the Linearkompressor according to any of claims 1 to 10, it is characterised in that：
In end face of the first piston towards the discharge chambe equipped with the first aperture and corresponding to the first of first aperture
Check valve towards the end face of the discharge chambe is equipped with the second aperture in the second piston and corresponding to the of second aperture
Two check valves, first check valve and the second one-way valve are selectively turned on respectively responsive to respective pressure at both sides
And closing.
12. Linearkompressor according to claim 11, it is characterised in that：
The first piston and the second piston include hollow cylinder open at one end, are set in one end with the opening
There is the boss for being fixedly connected with the connector, first aperture and second aperture include towards the opening direction
The conical round table of upper extension.
13. Linearkompressor according to claim 12, it is characterised in that：
First aperture and second aperture are respectively multiple, on the end face of the first piston and the second piston
In symmetrical fan-shaped arrangement.
14. Linearkompressor according to claim 13, it is characterised in that：
First check valve and second one-way valve are butterfly leaf valve, and the butterfly leaf valve includes covering first aperture
With the fan-shaped cantilever valve of a pair of second aperture, the central part between a pair of fan-shaped cantilever valve is equipped with mounting hole,
Kidney slot is equipped between the mounting hole and each fan-shaped cantilever valve.
15. according to the described in any item Linearkompressors of claim 2 to 10, it is characterised in that：
The first cylinder frame and the second cylinder frame respectively include bracket, and the bracket is by cast aluminium or PEEK, PPS highstrenghtpiston's system
At.
16. refrigeration equipment, including Linearkompressor, it is characterised in that:
The Linearkompressor is according to claim 1 to 15 described in any item Linearkompressors.
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| CN201510257566.7A CN106286208B (en) | 2015-05-18 | 2015-05-18 | Linear compressor and refrigeration equipment with same |
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| CN109653995A (en) * | 2018-12-25 | 2019-04-19 | 加西贝拉压缩机有限公司 | A kind of exhaust connection structure of linear compressor |
| CN113103845B (en) * | 2021-04-30 | 2022-09-20 | 南京信息职业技术学院 | Air conditioner compressor arrangement and new energy automobile suitable for new energy automobile |
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| EP0864750A4 (en) * | 1996-07-09 | 1999-06-09 | Sanyo Electric Co | Linear compressor |
| US20070286751A1 (en) * | 2006-06-12 | 2007-12-13 | Tecumseh Products Company | Capacity control of a compressor |
| KR101507605B1 (en) * | 2007-10-24 | 2015-04-01 | 엘지전자 주식회사 | linear compressor |
| JP2011144988A (en) * | 2010-01-13 | 2011-07-28 | Toyota Industries Corp | Refrigerating circuit |
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