KR100680205B1 - Linear compressor - Google Patents

Linear compressor Download PDF

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Publication number
KR100680205B1
KR100680205B1 KR1020050001817A KR20050001817A KR100680205B1 KR 100680205 B1 KR100680205 B1 KR 100680205B1 KR 1020050001817 A KR1020050001817 A KR 1020050001817A KR 20050001817 A KR20050001817 A KR 20050001817A KR 100680205 B1 KR100680205 B1 KR 100680205B1
Authority
KR
South Korea
Prior art keywords
discharge
shell
vibration absorbing
absorbing means
linear compressor
Prior art date
Application number
KR1020050001817A
Other languages
Korean (ko)
Other versions
KR20060081481A (en
Inventor
박종진
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020050001817A priority Critical patent/KR100680205B1/en
Publication of KR20060081481A publication Critical patent/KR20060081481A/en
Application granted granted Critical
Publication of KR100680205B1 publication Critical patent/KR100680205B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/12Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121Casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston 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
    • F04B35/04Piston 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
    • F04B35/045Piston 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/0027Pulsation and noise damping means
    • F04B39/0033Pulsation and noise damping means with encapsulations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/0027Pulsation and noise damping means
    • F04B39/0044Pulsation and noise damping means with vibration damping supports

Abstract

In the linear compressor according to the present invention, since the vibration absorbing means is installed outside the shell, the number of parts inside the shell is reduced, thereby miniaturizing the linear compressor, and the protective cover is provided to surround the vibration absorbing means. Since the vibration absorbing means can be protected from external impact or foreign matter, damage or malfunction of the parts can be prevented, thereby improving durability and reliability.
Linear compressor, linear motor, shell, vibration, absorption, protection

Description

Linear compressor {Linear compressor}             

1 is a longitudinal sectional view showing a linear compressor according to the present invention;

2 is a side view of a linear compressor according to the present invention;

<Explanation of symbols on main parts of the drawings>

50: shell 51: inlet

52: discharge port 53: suction pipe

54: silencer 60: linear motor

61: outer core 62: inner core

63: coil 64: magnet

65: magnet frame 70: cylinder

71: piston 71a: suction flow path

71b: suction port 72: spring support

73: main spring 74: suction valve

80: vibration absorbing means 81: connecting shaft

82: boss part 83: mass part

84: leaf spring 85: protective cover

85a: through hole 86: heat sink

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear compressor, and in particular, by installing vibration absorbing means on the outside of the shell and mounting a protective cover on the outside of the vibration absorbing means, the size of the shell can be reduced and the vibration absorbing means can be removed from the outside. The present invention relates to a linear compressor capable of protecting and improving durability and reliability.

In general, a linear compressor is a device that sucks, compresses and discharges a fluid while linearly reciprocating a piston inside a cylinder by using a linear driving force of a linear motor.

The conventional linear compressor includes a compression unit including a piston and a cylinder provided inside the shell to compress the fluid, and a linear motor including a stator and a mover that linearly reciprocates the piston into the cylinder.

The cylinder has a cylindrical structure having both sides open, one side of the piston is inserted and the other side is provided with a discharge cover for discharging the fluid compressed by the piston, the compression chamber is formed by the piston and the discharge cover, The discharge cover carries a discharge valve for opening and closing the compression chamber.

The linear motor includes a stator including an outer core, an inner core disposed to have a predetermined gap with the outer core, a bobbin mounted on the outer core, a coil wound around the bobbin, and a magnetic force formed around the coil. It consists of a magnet for linear reciprocating movement, and a magnet frame in which the magnet is mounted on one side and the piston is fixed on the other side to transfer the linear reciprocation of the magnet to the piston.

In the conventional linear compressor configured as described above, when a voltage is applied to the coil, a magnetic field is formed around the coil, and the magnet is linearly reciprocated by interaction with a magnetic field around the coil, and the linear reciprocating of the magnet is performed. Movement is transmitted to the piston through the magnet frame, so that the piston compresses the fluid in the cylinder while linearly reciprocating in the cylinder, and the compressed fluid is discharged to the outside through the discharge portion.

However, since the linear compressor according to the prior art has not only a moving part for compressing a fluid inside the shell but also all the parts for supporting it and reducing vibration, there is a limit in miniaturizing the compressor, and the design freedom of the compressor is limited. There is also a problem falling.

In addition, when mounting the component to reduce the vibration to the outside of the shell there is a problem that the damage and failure occurs due to the foreign matter or impact from the outside, such that durability and reliability is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and by constructing a vibration absorbing mechanism on the outside of the shell, it is possible to reduce the number of parts inside the shell to realize compactness of the compressor and to protect the vibration absorbing mechanism. It is an object of the present invention to provide a linear compressor in which durability and reliability can be improved by installing a protective guard.

A linear compressor according to the present invention for solving the above problems, the suction port and the discharge port formed shell; A linear motor fixed to the inside of the shell to generate a linear motion force; A piston connected to the linear motor to compress the fluid while linearly reciprocating in a cylinder fixed inside the shell; Vibration absorbing means installed outside the shell to absorb vibration; It is configured to include a protection means installed on the outside of the vibration absorbing means to protect the vibration absorbing means, wherein the protection means is characterized in that a plurality of heat dissipation holes are formed to heat the heat to the outside.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a linear compressor according to the present invention, Figure 2 is a side view showing a linear compressor according to the present invention.

In the linear compressor according to the present invention, as shown in FIGS. 1 and 2, the shell 50 having the suction port 51 and the discharge port 52 formed on both sides thereof is fixed to the inside of the shell 50, and linear movement force is provided. A linear motor 60 generating a pressure, a cylinder 70 fixed inside the shell 50, and a linear motor 60 connected to the linear motor 60 to compress the fluid while linearly reciprocating in the cylinder 70; A piston 71, vibration absorbing means 80 provided outside the shell 50 to absorb vibrations, and installed outside the vibration absorbing means 80 to protect the vibration absorbing means 80; It comprises a protective means.

In addition, a discharge unit assembly 90 through which the fluid compressed in the cylinder 70 is discharged is installed in front of the discharge port 52.

The shell 50 is formed in a cylindrical structure, the discharge port 52 is located on the front surface and the suction port 51 is located on the rear side, the suction pipe 51 in which fluid is sucked from the outside of the suction port 51 ) Is installed to penetrate through.

The linear motor 60 is largely composed of a stator and a mover. The stator is an outer core 61 made of a laminate, an inner core 62 made of a laminate, and arranged to have a predetermined gap with the outer core 61; And a coil 63 mounted on the outer core 61 to form a magnetic field, and a mover is located between the outer core 61 and the inner core 62 and is formed by a magnetic force formed around the coil 63. The magnet 64 is linearly moved, and the magnet 64 and the piston 71 are fixed to each other, and the magnet frame 65 transmits the linear movement force of the magnet 64 to the piston 71.

In addition, the cylinder 70 is fixed to the discharge port 52 in the shell 50 and has a cylindrical structure in which both sides are open. The cylinder 70 is compressed by the piston 71 and the discharge unit assembly 90. The yarn C is formed.

The piston 71 has a spring support 72 mounted to the rear, and the main spring 73 to elastically support the piston 71 between the front and rear surfaces of the spring support 72 and the shell 50. This is installed.

In addition, a suction flow path 71a through which the fluid is sucked through the suction pipe 53 is formed inside the piston 71, and a plurality of suction ports 71b and a plurality of suction ports are formed on the front surface of the piston 71. A suction valve 74 for opening and closing the two suction ports 71b is mounted.

In addition, the rear of the piston 71 is provided with a silencer 54 is connected to the suction pipe 53 to reduce the suction noise.

The discharge part assembly 90 is fixed to the outside of the shell 50 to discharge the fluid discharged through the discharge port 52 and the discharge cover 91, the cylinder 70 in the discharge cover 91 The discharge valve 92 in close contact with an opening of the opening and closing the compression chamber C, and a discharge spring 93 supported by the discharge cover 91 to provide an elastic force to the discharge valve 92. .

The discharge cover 91 has a cap shape, and one side of the discharge cover 91 is connected to a discharge pipe 94 for guiding the fluid discharged into the discharge cover 91 to the outside.

On the other hand, the vibration absorbing means 80 is the boss portion 82 which is connected to the discharge cover 91 by the connecting shaft 81, and the mass portion 83 spaced apart from the boss portion 82 by a predetermined interval And a leaf spring 84 connecting the boss portion 82 and the mass portion 83.

The mass portion 83 is formed in a circular ring structure having a certain amount of mass, and the leaf spring 84 is assembled by bolts to the front and rear surfaces of the boss portion 82 and the mass portion 83.

In addition, the protection means is disposed outside the vibration absorbing means 80 so as to protect the vibration absorbing means 80 from external foreign matter or impact, the protection formed to surround the vibration absorbing means 80 Cover 85.

The protective cover 85 has a cylindrical structure with one side open, and the open end of the protective cover 85 is coupled to the shell 50, and is preferably fastened to a welding or fastening member.

In addition, a heat dissipation hole 86 is formed in the protective cover 85 to dissipate heat inside the protective cover 85 to the outside, and the heat dissipation hole 86 is a circumferential surface of the protective cover 85. A plurality is formed along the.

In addition, a through hole 85a through which the discharge pipe 94 penetrates is formed at one side of the protective cover 85 to allow the discharge pipe 94 to exit to the outside.

Looking at the operation of the linear compressor according to the present invention configured as described above are as follows.

As the linear motor 60 is operated, the magnet 64 linearly reciprocates in interaction with the magnetic field around the coil 63, and this movement force is transmitted to the piston 71 through the magnet frame 65. The piston 71 is discharged into the discharge cover 91 by compressing the fluid sucked into the compression chamber C of the cylinder 70 while continuously linearly reciprocating in the cylinder 70. The process is repeated.

When the piston 71 is retracted, the suction valve 74 is opened while the fluid in the suction passage 71a of the piston 71 passes through the suction port 71b of the compression chamber of the cylinder 70. C) flows into the inside, and when the piston 71 is advanced toward the compression chamber C, the fluid compressed in the compression chamber C pushes the discharge valve 92 to discharge the discharge valve. 92 is opened, and the compressed fluid is discharged to the outside through the discharge cover 91 and the discharge pipe 94.

On the other hand, the vibration absorbing means 80 is to absorb the vibration in the movement direction of the linear motor 60 and the piston 71 when the linear motor 60 is operating. That is, the vibration in the movement direction of the piston 71 can be absorbed by the leaf spring 84 of the vibration absorbing means 80, and a mass body such as the mass portion 83 is added to the linear compressor. As a result, the natural frequency of the linear compressor is reduced, so that the vibration of the linear compressor is attenuated.

In addition, since the protective cover 85 is mounted on the outside of the vibration absorbing means 80, the vibration absorbing means 80 may be protected from an external shock or foreign matter by the protective cover 85. do.

Since the linear compressor according to the present invention configured as described above is provided with vibration absorbing means on the outside of the shell, the number of parts inside the shell can be reduced, thereby miniaturizing the linear compressor and protecting the vibration absorbing means. By providing a cover, since the vibration absorbing means can be protected from external impact or foreign matter, damage or malfunction of the parts can be prevented and durability and reliability can be improved.

In addition, since the plurality of heat dissipation holes are formed in the protective cover, it is possible to dissipate heat from the inside to the outside.

Claims (6)

  1. A shell formed with a suction port and a discharge port;
    A linear motor fixed to the inside of the shell to generate a linear motion force;
    A piston connected to the linear motor to compress the fluid while linearly reciprocating in a cylinder fixed inside the shell;
    Vibration absorbing means installed outside the shell to absorb vibration;
    And a protection means installed at an outer side of the vibration absorbing means and protecting the vibration absorbing means and having a plurality of heat radiating holes formed therein so as to radiate heat to the outside.
  2. The method of claim 1,
    And said protective means is a protective cover formed to surround said vibration absorbing means and coupled to said shell.
  3. The method according to claim 1 or 2,
    The linear compressor further includes a discharge cover for buffering the fluid discharged through the discharge port, and a discharge pipe connected to the discharge cover to guide the fluid in the discharge cover to the outside, and the protection means includes the discharge pipe. Linear compressor, characterized in that the through-hole is formed therethrough.
  4. The method of claim 3, wherein
    The linear compressor further includes a discharge cover provided in front of the discharge port to buffer the fluid discharged through the discharge port, and a discharge pipe connected to the discharge cover to guide the fluid in the discharge cover to the outside. And the protecting means has a through hole through which the discharge pipe passes.
  5. The method of claim 4, wherein
    And said vibration absorbing means comprises a boss portion connected to said discharge cover, a mass portion disposed around said boss portion, and a leaf spring connecting said boss portion and mass portion.
  6. delete
KR1020050001817A 2005-01-07 2005-01-07 Linear compressor KR100680205B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020050001817A KR100680205B1 (en) 2005-01-07 2005-01-07 Linear compressor

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR1020050001817A KR100680205B1 (en) 2005-01-07 2005-01-07 Linear compressor
JP2005341794A JP4890841B2 (en) 2005-01-07 2005-11-28 Linear compressor
US11/287,398 US20060153712A1 (en) 2005-01-07 2005-11-28 Linear compressor
DE200560004644 DE602005004644T2 (en) 2005-01-07 2005-12-08 Linear compressor
EP20050026866 EP1686264B1 (en) 2005-01-07 2005-12-08 Linear compressor
CNB200510136964XA CN100445556C (en) 2005-01-07 2005-12-16 Linear compressor

Publications (2)

Publication Number Publication Date
KR20060081481A KR20060081481A (en) 2006-07-13
KR100680205B1 true KR100680205B1 (en) 2007-02-08

Family

ID=36013392

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020050001817A KR100680205B1 (en) 2005-01-07 2005-01-07 Linear compressor

Country Status (6)

Country Link
US (1) US20060153712A1 (en)
EP (1) EP1686264B1 (en)
JP (1) JP4890841B2 (en)
KR (1) KR100680205B1 (en)
CN (1) CN100445556C (en)
DE (1) DE602005004644T2 (en)

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KR101484306B1 (en) 2007-10-24 2015-01-20 엘지전자 주식회사 Linear compressor
BRPI0705541A2 (en) 2007-12-18 2009-08-18 Whirlpool Sa arrangement and assembly process of resonant spring in refrigeration compressor
KR100864002B1 (en) * 2007-12-18 2008-10-17 김찬주 Pump equipped with anti-vibration mounting means
KR101681588B1 (en) * 2010-07-09 2016-12-01 엘지전자 주식회사 Linear compressor
BRPI1103314A2 (en) * 2011-07-21 2013-08-06 Whirlpool Sa Linear compressor
CN104662296B (en) * 2012-09-03 2017-06-20 Lg电子株式会社 Reciprocating compressor and the method for driving the reciprocating compressor
CN104653430B (en) * 2013-11-25 2017-05-03 青岛海尔智能技术研发有限公司 Linear compressor with air cylinder fixing inner stator
CN105987113B (en) * 2015-02-09 2018-11-13 珠海格力电器股份有限公司 Spring support, mover assembly, pump body structure and compressor
CN108425827B (en) * 2016-07-21 2020-05-12 陕西仙童科技有限公司 Compression unit and oil-free lubrication linear compressor
US10465671B2 (en) * 2017-02-23 2019-11-05 Haier Us Appliance Solutions, Inc. Compressor with a discharge muffler

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JP2002115653A (en) * 2000-10-04 2002-04-19 Twinbird Corp Compressor
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KR20050072268A (en) * 2004-01-06 2005-07-11 엘지전자 주식회사 Linear compressor with vibration absorber on the outside

Also Published As

Publication number Publication date
EP1686264A1 (en) 2006-08-02
CN1800640A (en) 2006-07-12
JP2006189038A (en) 2006-07-20
CN100445556C (en) 2008-12-24
US20060153712A1 (en) 2006-07-13
KR20060081481A (en) 2006-07-13
DE602005004644D1 (en) 2008-03-20
EP1686264B1 (en) 2008-02-06
JP4890841B2 (en) 2012-03-07
DE602005004644T2 (en) 2009-01-29

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