CN102439311A - Linear compressor - Google Patents

Linear compressor Download PDF

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Publication number
CN102439311A
CN102439311A CN2010800143221A CN201080014322A CN102439311A CN 102439311 A CN102439311 A CN 102439311A CN 2010800143221 A CN2010800143221 A CN 2010800143221A CN 201080014322 A CN201080014322 A CN 201080014322A CN 102439311 A CN102439311 A CN 102439311A
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CN
China
Prior art keywords
loop pipe
piston
seal container
cylinder
operating frequency
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2010800143221A
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Chinese (zh)
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CN102439311B (en
Inventor
李孝宰
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LG Electronics Inc
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LG Electronics Inc
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Publication of CN102439311A publication Critical patent/CN102439311A/en
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Publication of CN102439311B publication Critical patent/CN102439311B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The present invention relates to a linear compressor, comprising: a sealed container providing a sealed space and including a suction tube and a discharge tube through which a refrigerant is suctioned and discharged; a cylinder installed in the sealed container and providing a compressing space; a piston reciprocating linearly in the cylinder so as to compress the refrigerant in the compressing space; a linear motor operating at a preset operation frequency so as to apply a driving force to the piston; a plurality of support springs configured so as to support an assembly including the cylinder, the piston, and the linear motor with respect to a bottom surface of the sealed container; and a loop pipe through which the refrigerant compressed in the compressing space is guided to the discharge tube.; Since the phase of an exiting force applied from the loop pipe to the sealed container is opposite the phase of shell exiting forces of the support springs, vibrations of a main body and of the loop pipe cancel each other out, and thus overall vibrations can be reduced.

Description

Linearkompressor
Technical field
The present invention relates to a kind of Linearkompressor that reduces vibration through the reversal of phase between each vibration factor.
Background technique
Generally speaking; Compressor (Compressor) is accepted power from power generation arrangements such as motor or turbines; Air or refrigeration agent or various working gass are in addition compressed the mechanical device that improves pressure, and it is widely used in household electric appliance such as refrigerator and air-conditioning or whole industry.
This compressor is divided into substantially: reciprocal compressor (Reciprocating compressor); Between piston (Piston) and cylinder (Cylinder), be formed for sucking, discharging the compression volume of working gas, make piston carry out straight reciprocating motion and refrigeration agent is compressed in the inside of cylinder; Rotary compressor (Rotary compressor); Between the roller (Roller) of off-centre rotation and cylinder (Cylinder), be formed for sucking, discharging the compression volume of working gas, make roller carry out off-centre and rotate and refrigeration agent is compressed along the inwall of cylinder; Scroll compressor (Scroll compressor); Between revolution scroll (Orbiting scroll) and fixed scroll (Fixed scroll), be formed for sucking, discharging the compression volume of working gas, make and turn round scroll and be rotated and refrigeration agent is compressed along fixed scroll.
Recently; In reciprocal compressor, particularly more exploitation is Linearkompressor, and it is directly connected to piston the drive motor that carries out linear reciprocating motion; Do not make and can produce the mechanical loss of bringing because of movement conversion, realize simple structure when improving compression efficiency.
Fig. 1 is the structural drawing of the vibration factor of the common Linearkompressor of expression.
Generally speaking, as shown in Figure 1, Linearkompressor comprises: seal container 10, and it is airtight space; Body 20, it is made up of the cylinder, piston and the linear electric machine that refrigeration agent are compressed in the inside of seal container 10.At this moment, body 20 is in seal container 10, and by a plurality of supported spring S and be used to form the loop pipe L elastic support of the discharge stream of refrigeration agent, seal container 10 can be fixed on to elastic support the face of setting by the carriage that is located at its bottom surface 11.
Generally speaking, in Linearkompressor, the permanent magnet and the piston that are used for the linear electric machine of driven plunger together drive, and feasible quality of carrying out the portion of mechanism of linear reciprocating motion becomes big, and increases vibration.But because Linearkompressor turns round under resonance state in order to improve compression efficiency, thereby the method for quality that reduces portion of mechanism in order to reduce vibration can reduce the whole efficiency of compressor, not too is fit in view of the above use.Therefore, Linearkompressor needs to optimize the vibration transmissibility between seal container 10 and the body 20 in order to reduce vibration.At this moment; Bring the factor of influence can give an example carriage 11, supported spring S and loop pipe L to vibration transmissibility; The rigidity of hence one can see that carriage 11, the rigidity of supported spring S and highly can not have influence on whole efficiency; Opposite with it, because loop pipe L has predetermined rigidity and quality, thereby on the design aspect of the Linearkompressor that utilizes resonance, can bring greatest influence to whole efficiency.
Fig. 2 is the chart of vibration displacement that expression is applied to the loop pipe of existing technology Linearkompressor.
Linearkompressor in the past, as shown in Figure 2, its specified operating frequency is set at 60Hz, and the natural frequency of loop pipe is set in being higher than 70～90Hz frequency band of specified operating frequency.At this moment, when starting, linear electric machine rises to 60Hz with operating frequency from 0Hz as existing reciprocal compressor.Promptly; Preferably; If the natural frequency of loop pipe is lower than the operating frequency of Linearkompressor, the operating frequency of Linearkompressor rises in the interval of specified operating frequency when starting, and can resonate on the operating frequency of the Linearkompressor part consistent with the natural frequency of loop pipe; Cause loop pipe to receive breakage, the natural frequency of setting loop pipe thus is higher than the specified operating frequency of Linearkompressor.
But; The body of Linearkompressor in the past, supported spring and loop pipe obtain elastic support in seal container, and the operating frequency of setting loop pipe is higher than specified operating frequency; Since when starting operating frequency rise to specified operating frequency during; The excitation force of loop pipe increases along the direction identical with the excitation force of supported spring, makes the excitation force of supported spring and the excitation force of loop pipe increase, thereby appears at the problem of the vibration increase of transmitting to integrating compressor when starting.
Summary of the invention
Technical problem
The present invention proposes in order to solve above-mentioned prior art problems, and its purpose is to provide the Linearkompressor that reduces vibration through reversal of phase.
The means of dealing with problems
The Linearkompressor of the present invention that is used to address the above problem is characterized in that, comprising: seal container; It is to have to be used to suck/suction pipe of discharging refrigerant and the confined space of discharge tube, cylinder, and it has the compression volume of the inside that is arranged on seal container; Piston, linear reciprocating motion is carried out in its inside at cylinder, is used for the refrigeration agent in the compression volume is compressed; Linear electric machine, it turns round with the operating frequency that sets, and is used for to piston driving force being provided; A plurality of supported springs will comprise the assembly body of cylinder, piston and linear electric machine, and elastic support is in the bottom surface of seal container; Loop pipe, it will guide to discharge tube by compressed refrigeration agent in compression volume; Loop pipe is opposite to the phase place of the excitation force of seal container to phase place and each supported spring of the excitation force of seal container.
And Linearkompressor of the present invention is characterized in that, the natural frequency of loop pipe is set at below the specified operating frequency of linear electric machine.
And Linearkompressor of the present invention is characterized in that, the specified operating frequency of linear electric machine is 60Hz, and the natural frequency of loop pipe is set at below the 50Hz.
And Linearkompressor of the present invention is characterized in that, comprising: seal container; It is to be used to suck/confined space of discharging refrigerant, cylinder, and it has the compression volume of the inside that is arranged on seal container, piston; Linear reciprocating motion is carried out in its inside at cylinder, is used for the refrigeration agent in the compression volume is compressed, and linear electric machine, it turns round with the operating frequency that sets; Be used for driving force being provided to piston, supported spring, it will comprise the assembly body of cylinder, piston and linear electric machine; Elastic support is in the bottom surface of seal container, loop pipe, and it will guide to discharge tube by compressed refrigeration agent in compression volume; The specified operating frequency of linear electric machine is greater than the natural frequency of loop pipe.
And Linearkompressor of the present invention is characterized in that, the specified operating frequency of linear electric machine is directly proportional with the natural frequency of loop pipe.
The effect of invention
The as above Linearkompressor of the present invention of structure; Body is come elastic support through supported spring and loop pipe in seal container; The natural frequency of setting loop pipe is lower than specified operating frequency; Directly turn round when starting owing to use variable-frequency motor, make the excitation force of loop pipe in specified operating frequency, apply, thereby have the vibration that reduction is transmitted to integrating compressor along the direction opposite with the excitation force of supported spring by specified operating frequency.
Description of drawings
Fig. 1 is the structural drawing of the vibration factor of the common Linearkompressor of expression.
Fig. 2 is the chart of vibration displacement that expression is applied to the loop pipe of existing technology Linearkompressor.
Fig. 3 is the side sectional view of an example of expression Linearkompressor of the present invention.
Fig. 4 is the chart of vibration displacement that expression is applied to the loop pipe of Linearkompressor of the present invention.
Fig. 5 is the chart of expression based on the magnitude of vibrations of the seal container of the natural frequency variation of loop pipe in the Linearkompressor of the present invention.
Embodiment
Below, through with reference to accompanying drawing, embodiments of the invention are carried out detailed explanation.
Fig. 3 is the side sectional view of an example of expression Linearkompressor of the present invention.
Example according to Linearkompressor of the present invention; As shown in Figure 3; In seal container 110, comprise cylinder 200, piston 300 and linear electric machine 400 as airtight space; This linear electric machine 400 comprises inner stator 420, external stator 440 and permanent magnet 460; If permanent magnet 460 carries out straight reciprocating motion through mutual electromagnetic power between inner stator 420 and external stator 440,300 in the piston that is connected with permanent magnet 460 can together carry out straight reciprocating motion with permanent magnet 460.
Inner stator 420 is fixed in the periphery of cylinder 200; External stator 440 is along axially being fixed by framework 520 and motor cover 540; Framework 520 and motor cover 540 be by being connected like connected elements such as screws and mutually combining, thus, and fixing external stator 440 between framework 520 and motor cover 540.Framework 520 can form as one with cylinder 200, and, can also make separately with cylinder 200 and combine with cylinder 200.In the embodiment shown in Fig. 3, illustrate the example that framework 520 and cylinder 200 form as one.
The rear of piston 300 is connected with support 320.Four the place ahead main springs 800 support two ends by support 320 and motor cover 540.And four rear main springs 800 support two ends by support 320 and bonnet 560, and bonnet 560 is combined in the rear of motor cover 540.Has the silencing apparatus 700 of suction at the rear of piston 300, through sucking the noise of silencing apparatus 700 when piston 300 inflow refrigeration agents reduce the suction refrigeration agent.
The inside of piston 300 is the hollow form, so that compress to the compression volume P inflow that is formed between cylinder 200 and the piston 300 through the refrigeration agent that sucks silencing apparatus 700 inflows.Front end at piston 300 is provided with suction valve 610, and suction valve 610 is open, so that refrigeration agent flows into to compression volume P from piston 300, and the front end of closed piston 300 flow into piston 300 to prevent refrigeration agent from compression volume P again.
If in compression volume P, to come compressed refrigerant by piston 300 more than the predetermined pressure, 620 of expulsion valves that are positioned at the front end of cylinder 200 can be opened.Expulsion valve 620 is arranged on the inboard of the support cap 640 that is fixed in cylinder 200 1 ends, to obtain elastic support through spiral helicine expulsion valve spring 630.The refrigeration agent of the high pressure that has compressed through the hole that is formed at support cap 640 be discharged to discharge in the cap 660 after, discharge to the outside of Linearkompressor 100 through loop pipe L, thereby circulate at refrigeration cycle.
Each parts of above-mentioned Linearkompressor 100 are supported through the place ahead supported spring 120 and rear supported spring 140 under the state of assembling, and separate with the bottom surface of seal container 110.Because above-mentioned each parts directly do not contact with the bottom surface of seal container 110, thereby the vibration that on each parts of compressor 100, produces during compressed refrigerant can directly not be passed to seal container 110.Therefore, can reduce the noise that the vibration because of the vibration of transmitting to the outside of housing 100 and seal container 110 produces.
Above-mentioned Linearkompressor as content illustrated in the existing technology, in order to reduce vibration, needs to optimize vibration transmissibility, and need the design as the loop pipe L of the factor that might have influence on efficient be limited.Certainly; Owing to comprise that the body of cylinder 200, piston 300 and linear electric machine 400 obtains elastic support in the inside of seal container 110 through supported spring 120,140 and loop pipe L, thereby can regard the excitation force sum of the excitation force and the loop pipe L of supported spring 120,140 as to the vibration that seal container 110 transmits.But, in the present invention, set the excitation force of loop pipe L, make its phase place that has with the direction in the opposite direction of the excitation force of supported spring 120,140 reduce the vibration of transmitting to whole compressor.
Fig. 4 is the chart of vibration displacement that expression is applied to the loop pipe of Linearkompressor of the present invention.
As shown in Figure 4, Linearkompressor of the present invention in order to reduce vibration through reversal of phase, is set the natural frequency f of loop pipe 1pBe lower than specified operating frequency f.At this moment, shown in chart, though be lower than the natural frequency f of loop pipe 1pFrequency in, loop pipe still, is being higher than the natural frequency f of loop pipe along (+) direction vibration 1pFrequency in, loop pipe vibrates along (-) direction.Therefore, if specified operating frequency f is higher than the natural frequency f of loop pipe 1p, reversal of phase is then carried out in the vibration of loop pipe, and the excitation force of loop pipe works along the direction opposite with the excitation force of supported spring, reduces the vibration of transmitting to whole seal container thus.
And, when starting, directly turn round, to prevent the breakage of loop pipe by specified operating frequency f.At this moment, when starting linear electric machine, if from 0 scanning (sweep) to specified operating frequency f, operating frequency reaches before the specified operating frequency f then the natural frequency f with loop pipe 1pUnanimity receives breakage because of resonance phenomenon causes loop pipe, thereby when starting linear electric machine, the variable-frequency motor that advantageous applications is directly turned round by specified operating frequency f.
As an example, specified operating frequency f is set at 60Hz, when starting, is directly turned round the natural frequency f of loop pipe by specified operating frequency f 1pCan be set at below the 50Hz that is lower than specified operating frequency f.
Fig. 5 is the chart of expression based on the magnitude of vibrations of the seal container of the natural frequency variation of loop pipe in the Linearkompressor of the present invention.
Fig. 5 as the experimental result of Linearkompressor of the present invention has represented specified operating frequency is set at 60Hz, and detects the vibration of transmitting to whole seal container through the natural frequency that changes loop pipe.
As shown in Figure 5, along with the natural frequency f of loop pipe 1pApproach 60Hz, will become greatly, in the frequency domain that is lower than as the 60Hz of specified operating frequency f, set the natural frequency f of loop pipe to the vibration of whole seal container transmission as specified operating frequency f 1pReduce the vibration of transmitting to whole seal container.
More detailed, if with the natural frequency f of loop pipe 1pChange to 35～50Hz, the vibration of seal container then can increase to 13～57Gal, still, and based on the natural frequency changes delta f of loop pipe 1pThe vibration changes delta f of seal container very little, thereby can regard the vibration-stable interval of transmitting as to compressor.But, if with the natural frequency f of loop pipe 1pChange to 50～60Hz, the vibration of seal container then can increase to 57～1120Gal, and, based on the natural frequency changes delta f of loop pipe 1pThe vibration changes delta f of seal container bigger, thereby can regard the interval that the vibration of transmitting to compressor increases as.And, if with the natural frequency f of loop pipe 1pChange to 60～70Hz, the vibration of seal container then can be reduced to 1120～452Gal, still, and based on the natural frequency changes delta f of loop pipe 1pThe vibration changes delta f of seal container compare above-mentioned vibration to increase interval variation littler, even the vibration values of in fact transmitting to seal container reduces, compare the vibration values of above-mentioned vibration stable region and also want big.And, if with the natural frequency f of loop pipe 1pChange to more than the 70Hz, the vibration of seal container then can be reduced to below the 452Gal, still, and based on the natural frequency changes delta f of loop pipe 1pThe vibration changes delta f of seal container compare vibration to increase interval variation littler, as foregoing,, compare the vibration values of above-mentioned vibration stable region and also want big even the vibration values of in fact transmitting to seal container reduces.
Therefore, in view of the vibration of integrating compressor, preferably, be in the compressor of 60Hz at specified operating frequency f, the natural frequency f of loop pipe 1pSet in the frequency domain below 50Hz.And, as stated, in view of determine the natural frequency f of loop pipe in direct ratioly with specified operating frequency f 1pProblem, preferably, be in the compressor of 50Hz at specified operating frequency f, the natural frequency f of loop pipe 1pSet in the frequency domain below 41.6Hz.
More than, the present invention is based on embodiments of the invention and accompanying drawing, at length be illustrated for example.But scope of the present invention is not limited to above each embodiment and accompanying drawing, and scope of the present invention should be regarded as only limiting according to the content of being put down in writing in described claims.

Claims (5)

1. a Linearkompressor is characterized in that,
Comprise:
Seal container, it is to have to be used to suck/suction pipe of discharging refrigerant and the confined space of discharge tube,
Cylinder, it has the compression volume of the inside that is arranged on seal container,
Piston, linear reciprocating motion is carried out in its inside at cylinder, is used for the refrigeration agent in the compression volume is compressed,
Linear electric machine, it turns round with the operating frequency that sets, is used for driving force being provided to piston,
A plurality of supported springs will comprise the assembly body of cylinder, piston and linear electric machine, and elastic support is in the bottom surface of seal container,
Loop pipe, it will guide to discharge tube by compressed refrigeration agent in compression volume;
Loop pipe is opposite to the phase place of the excitation force of seal container to phase place and each supported spring of the excitation force of seal container.
2. Linearkompressor according to claim 1 is characterized in that, the natural frequency of loop pipe is set at below the specified operating frequency of linear electric machine.
3. Linearkompressor according to claim 2 is characterized in that, the specified operating frequency of linear electric machine is 60Hz, and the natural frequency of loop pipe is set at below the 50Hz.
4. a Linearkompressor is characterized in that,
Comprise:
Seal container, it is to be used to suck/confined space of discharging refrigerant,
Cylinder, it has the compression volume of the inside that is arranged on seal container,
Piston, linear reciprocating motion is carried out in its inside at cylinder, is used for the refrigeration agent in the compression volume is compressed,
Linear electric machine, it turns round with the operating frequency that sets, is used for driving force being provided to piston,
Supported spring, it will comprise the assembly body of cylinder, piston and linear electric machine, elastic support is in the bottom surface of seal container,
Loop pipe, it will guide to discharge tube by compressed refrigeration agent in compression volume;
The specified operating frequency of linear electric machine is greater than the natural frequency of loop pipe.
5. Linearkompressor according to claim 4 is characterized in that, the specified operating frequency of linear electric machine is directly proportional with the natural frequency of loop pipe.
CN201080014322.1A 2009-12-08 2010-12-06 Linearkompressor Expired - Fee Related CN102439311B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020090121292A KR101681322B1 (en) 2009-12-08 2009-12-08 Linear compressor
KR10-2009-0121292 2009-12-08
PCT/KR2010/008672 WO2011071284A2 (en) 2009-12-08 2010-12-06 Linear compressor

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Publication Number Publication Date
CN102439311A true CN102439311A (en) 2012-05-02
CN102439311B CN102439311B (en) 2015-10-14

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US (1) US20120034114A1 (en)
EP (1) EP2511527A4 (en)
KR (1) KR101681322B1 (en)
CN (1) CN102439311B (en)
WO (1) WO2011071284A2 (en)

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US9841012B2 (en) * 2014-02-10 2017-12-12 Haier Us Appliance Solutions, Inc. Linear compressor
US9518572B2 (en) * 2014-02-10 2016-12-13 Haier Us Appliance Solutions, Inc. Linear compressor
US9429150B2 (en) * 2014-02-10 2016-08-30 Haier US Appliances Solutions, Inc. Linear compressor
US9322401B2 (en) * 2014-02-10 2016-04-26 General Electric Company Linear compressor
US9506460B2 (en) * 2014-02-10 2016-11-29 Haier Us Appliance Solutions, Inc. Linear compressor
US10240603B2 (en) 2014-05-22 2019-03-26 Trane International Inc. Compressor having external shell with vibration isolation and pressure balance
US10458687B2 (en) * 2016-01-06 2019-10-29 Johnson Controls Technology Company Vapor compression system
KR102060175B1 (en) * 2018-06-29 2019-12-27 엘지전자 주식회사 Linear compressor

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JPH11107931A (en) * 1997-10-02 1999-04-20 Matsushita Refrig Co Ltd Sealed performance capacity controllable compressor
CN1654822A (en) * 2004-02-10 2005-08-17 Lg电子株式会社 Vibration reduction structure of reciprocating compressor
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Publication number Publication date
EP2511527A4 (en) 2013-06-12
US20120034114A1 (en) 2012-02-09
WO2011071284A2 (en) 2011-06-16
CN102439311B (en) 2015-10-14
EP2511527A2 (en) 2012-10-17
KR20110064610A (en) 2011-06-15
KR101681322B1 (en) 2016-11-30
WO2011071284A3 (en) 2011-11-10

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