WO2005028868A1 - Reciprocating compressor having supporting unit attenuating lateral dislacement thereof - Google Patents
Reciprocating compressor having supporting unit attenuating lateral dislacement thereof Download PDFInfo
- Publication number
- WO2005028868A1 WO2005028868A1 PCT/KR2004/002223 KR2004002223W WO2005028868A1 WO 2005028868 A1 WO2005028868 A1 WO 2005028868A1 KR 2004002223 W KR2004002223 W KR 2004002223W WO 2005028868 A1 WO2005028868 A1 WO 2005028868A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressor
- pitches
- wound
- elastic
- coil
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 239000011295 pitch Substances 0.000 claims description 63
- 230000003247 decreasing effect Effects 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 description 23
- 238000006073 displacement reaction Methods 0.000 description 14
- 230000006698 induction Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- 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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- 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
-
- 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
Definitions
- the present invention relates to a reciprocating compressor having a supporting unit attenuating its lateral displacement, and more particularly, to a reciprocating compressing having a supporting unit attenuating its lateral displacement capable of minimizing lateral vibration of a compressor, which is generated in a direction that a reciprocating motor is operated in operation of the reciprocating compressor.
- a reciprocating compressor constitutes an air conditioning device, sucks a refrigerant gas thereinto and discharges the compressed refrigerant gas outside the compressor as a piston linearly reciprocates in a cylinder.
- a conventional reciprocating compressor includes a casing 10 forming an exterior, having a certain space therein and including a siction pipe (SP) through which a refrigerant gas is introduced and a discharge pipe (DP) through which the refrigerant gas compressed in the compressor is discharged outside; a compressor main body 70 positioned in the casing 10, for compressing the sucked refrigerant gas; and a supporting unit 60 having a plurality of coil springs elastically connecting the compressor main body 70 to one surface of the casing 10 so that the main body 70 is fixed to the casing 10.
- SP siction pipe
- DP discharge pipe
- the main body 70 of the compressor includes a frame unit 20 elastically connected to the supporting unit 60 and forming the whole frame of the main body 70; a reciprocating motor 30 fixedly installed at the frame unit 20 and generating a linear reciprocating driving force; and a compressing unit 40 supported at the frame unit 20 and compressing the sucked refrigerant gas by a driving force of the reciprocating motor 30.
- the frame unit 20 includes a front frame 21 having one surface supported by the supporting unit 60 and fixing one surface of the reciprocating motor 30; a middle frame 22 fixed at the other surface of the reciprocating motor 30 fixed at the front frame 21; and a rear frame 23 having one surface elastically fixed by the supporting unit 60 and connected to the middle frame 22.
- the reciprocating motor 30 includes an outer stator 31 fixedly installed between the front frame 21 and the middle frame 22 and having a winding coil 34 therein; an inner stator 32 facing the outer stator 31 at a certain interval and fixedly installed at one side of the front frame 21; and a rotor 33 linearly moving between the outer stator 31 and the inner stator 32.
- the compressing unit 40 includes a cylinder 41 inserted into the front frame 21 to be fixed thereto; a piston 42 having a path (F) for a refrigerant gas therein and having one end connected to the rotor 33 to thereby reciprocate in the cylinder 41; a suction valve 43 installed at a front end surface of the piston 42, for opening and closing the refrigerant gas path (F); and a discharge valve assembly 44 installed at one end surface of the cylinder 41, for controlling discharge of the compressed refrigerant gas.
- a compressing space (P) is formed between the suction valve 43 and the discharge valve assembly 44.
- a front resonant spring 51 and a rear resonant spring 52 causing a resonant motion of the piston 42 are installed between one end of the piston 42 connected to the rotor 33 and one end of the front frame 21 and between the one end of the piston 42 and one end of the rear frame 23, respectively.
- a plurality of coil springs constituting the supporting unit 60 includes a front coil spring 61 connecting the front frame 21 to one surface of the casing 10; and a rear coil spring 62 connecting the rear frame 23 to one surface of the casing 10, so that the main body 70 is elastically fixed to the inside of the casing 10.
- the plurality of coil springs 61 and 62 are formed by being spirally wound several times at regular intervals, having the same diameter. That is, the coil spring 61, 62 has an inner coil 58 wound plural times and end coils 59 formed at both ends of the inner coil 58.
- the inner coil 58 is wound at regular pitches (t), and each of the end coils 59 is tightly wound so that the coil spring 61, 62 can be fixed to one surface of the compressor main body 70-the front frame 21 and the rear frame 23- and one surface of the casing 10
- a rotor 33 and a piston 42 are moved together in a direction of the electromagnetic force, and, simultaneously, the piston 42 generates a pressure difference in a compressing space (P) of the cylinder 41 while linearly reciprocating in the cylinder by front and rear resonant springs 51 and 52, thereby repeatedly performing a series of processes of sucking a refrigerant gas and compressing the sucked refrigerant gas until the pressure reaches a certain level and discharging the compressed refrigerant gas.
- P compressing space
- the conventional reciprocating compressor as above is mostly vibrated in a lateral direction by nature, that is, in a direction that the piston of the reciprocating motor moves. Nevertheless, the lateral stiffness of the coil spring is weak because an internal coil of each coil spring for supporting the main body of the reciprocating compressor is formed at regular pitches. For this reason, as shown in Figure 2B, a lateral displacement (L) of the compressor becomes great, and thus the compressor main body is excessively inclined, thereby making the vibration of the compressor severe. Disclosure for invention
- a reciprocating compressor comprising: a casing including a suction pipe through which a fluid is introduced from the outside and a discharge pipe through which the fluid is discharged outside and forming a predetermined internal space; a compressor main body positioned in the casing, compressing the fluid introduced through the suction pipe by a linear reciprocating motion of a piston and discharging the compressed fluid through the discharge pipe; and a supporting unit including a plurality of coil springs connecting the compressor main body to the casing, wherein the plurality of coil springs include, respectively, end coils tightly wound to be fixed to one surface of the compressor main body and to one surface of the casing; and an inner coil positioned between the pair of the end coils and having at least one part wound tightly.
- Figure 1 is a longitudinal sectional view of a conventional reciprocating compressor
- Figure 2A is a side view showing a coil spring of a conventional reciprocating compressor
- Figure 3A is a view showing a lateral displacement of a coil spring of a conventional reciprocating compressor
- Figure 3 is a longitudinal sectional view showing one example of a reciprocating compressor in accordance with the present invention
- Figure 4 is a partial longitudinal sectional view of a reciprocating compressor, for showing a coil spring in accordance with a first embodiment of the present invention
- Figure 5A is a side view showing a coil spring in accordance with a first embodiment of the present invention
- Figure 5B is a view showing a lateral displacement of a coil spring in accordance with a first embodiment of the present invention
- Figure 6 is a partial longitudinal sectional view of a reciprocating compressor, for showing a coil spring in accordance with a second embodiment of the present invention
- Figure 7A is a side view showing
- FIG. 3 is a longitudinal sectional view showing a reciprocating compressor in accordance with the present invention.
- the reciprocating compressor in accordance with the present invention includes: a casing 100 forming an exterior of a compressor, having a certain space therein and including a suction pipe (SP) through which a refrigerant gas is introduced and a discharge pipe through which the refrigerant gas compressed in the compressor is discharged outside; a compressor main body 700 positioned in the casing 100, for compressing and discharging the sucked refrigerant gas; and a supporting unit 600 including a plurality of coil springs elastically connecting the compressor main body 700 to one surface of the casing 100 so that the main body 700 is fixed to the casing 100.
- SP suction pipe
- the compressor main body 700 includes a frame unit 200 elastically connected to the supporting unit 600 and forming the whole frame of the main body 700; a reciprocating motor 300 fixedly installed at the frame unit 200, for generating a linear reciprocating driving force; and a compressing unit 400 supported by the frame unit 200, for compressing the sucked refrigerant gas by a driving force of the reciprocating motor 300.
- the frame unit 200 includes a front frame 210 having one surface supported by the supporting unit 600 and fixing one surface of the reciprocating motor 300; a middle frame 220 fixed to the other surface of the reciprocating motor 300 fixed at the front frame 210; and a rear frame 230 having one surface elastically fixed to the supporting unit 500 and connected to the middle frame 220.
- the reciprocating motor 300 includes an outer stator 310 fixedly installed between the front frame 210 and the middle frame 220 and having a winding coil 340 therein; an inner stator 320 facing the outer stator 310 at a certain interval and fixedly installed at one side of the front frame 210; and a rotor 330 linearly moving between the outer stator 310 and the inner stator 320.
- the compressing unit 400 includes a cylinder 410 inserted into the front frame 210 to be fixed thereto; a piston 420 having a path (F) for a refrigerant gas therein and having one end connected to the rotor 330 to thereby reciprocate in the cylinder 410; a suction valve 430 installed at a front end surface of the piston 420, for opening and closing the refrigerant gas path (F); and a discharge valve assembly 440 installed at one end surface of the cylinder 410, for controlling discharge of the compressor refrigerant gas. Accordingly, a compressing space (P) is formed between the suction valve 430 and the discharge valve assembly 440.
- a front resonant spring 510 and a rear resonant spring 502 causing a resonant motion of the piston 420 are installed between one end of the piston 420 connected to the rotor 330 and one end of the front frame 210 and between the one end of the piston 420 and one end of the rear frame 230, respectively.
- a plurality of coil springs constituting the supporting unit 600 include, respectively, a front coil spring 610 connecting the front frame 210 to one surface of the casing 100; and a rear coil spring 620 connecting the rear frame 230 to one surface of the casing 100 so that the main body 700 is elastically fixed to the inside of the casing 100.
- the plurality of coil springs 610 and 620 are formed by being spirally wound several times, having the same diameter. That is, the coil spring 610, 620 has an inner coil 580 wound plural times and end coils 590 formed at both ends of the inner coil 580.
- the inner coil 580 has at least one part which is tightly wound so as to reduce vibration of the compressor main body 700, which is generated in a direction that the piston 420 moves. And, the end coil 590 is tightly wound so that the coil spring 610, 620 can be fixed to one surface of the compressor main body 700-the front frame 210 and the rear frame 230- and to one surface of the casing 100.
- Figure 4 shows one of plural coil springs constituting a supporting unit of a reciprocating compressor in accordance with a first embodiment of the present invention.
- the coil spring 610, 620 in accordance with the first embodiment of the present invention includes end coils 590 tightly wound so as to be respectively fixed to one surface of the casing 100 and one surface of the main body, particularly, one surface of the frame unit 200; and an inner coil 580 wound and connected to the end coil 590.
- the inner coil 580 includes a pair of elastic parts 631 having predetermined pitches (t) from the end coil 590 toward the central portion of the coil spring; and a mass part 632 formed at the central portion of the coil spring between the pair of elastic parts 631 and tightly wound without any interval.
- the winding number of the mass part 632 is twice ⁇ four times as many as that of the end coil 590 so that the coil spring 610, 620 has a stiffness which can stand lateral vibration of a reciprocating motor 300 and a compressing unit 400.
- the pair of elastic parts 631 is wound having regular pitches.
- each of the elastic parts 631 may be wound at pitches (T) decreased as it goes from the end coil 590 toward the mass part 632 or may be wound at pitches (T) increased as it goes from the end coil 590 toward the mass part 632.
- each of elastic parts 631 may be wound at pitches increased and decreased alternately between the end part 590 and the mass part 632.
- the coil spring has longitudinal stiffness and simultaneously lateral stiffness by including the pair of elastic parts 631 and the mass part 632 between the pair of elastic parts 631.
- Figures 6 and 7 show a coil spring constituting a supporting unit of a reciprocating compressor in accordance with a second embodiment of the present invention.
- a coil spring 610, 620 in accordance with the second embodiment includes an end coil 590; and an inner coil 580 including a pair of mass parts 641 which are tightly wound right next to the end coil 590; an elastic part 642 wound at predetermined pitches (t) between the pair mass parts.
- the winding number of the mass part 641 preferably is two ⁇ four times as many as that of the end coil 590.
- the elastic part 642 is preferably wound at regular pitches (t).
- the elastic part 642 may be wound at pitches decreased as it goes toward the central portion of the coil spring 610, 620 or, contrary, at pitches (T) increased as it goes toward its central portion.
- the elastic part 642 may be wound at pitches increased and decreased alternately between the pair of the mass parts 641.
- FIG. 8 shows a coil spring constituting a supporting unit of a reciprocating compressor in accordance with a third embodiment of the present invention.
- a coil spring 610, 620 in accordance with the third embodiment includes an end coil 592; and an inner coil including a first elastic part 652 wound from an end coil 590 fixed at one surface of the compressor main body 700 at predeter mined pitches (tl), a second elastic part 653 wound from an end coil 590 fixed at one surface of the casing 100 at predetermined pitches (t2) that are different from those (tl) of the first elastic part 652, and a mass part 651 tightly wound between the first and second elastic parts 652 and 653.
- the pitches (tl) of the first elastic part 652 and the pitches (t2) of the second elastic part are regular, respectively, but the two pitches (tl and t2) are different from each other.
- first elastic part 652 and the second elastic part 653 may be wound at pitches (tl, t2) decreased as it goes from both end coils 592 and the mass part 651, and the decreasing ratios of the pitch (tl) and the pitch (t2) may be different from each other.
- first elastic part 652 and the second elastic part 653 may be wound at pitches (tl and t2) increased as it goes from both end coils 592 toward the mass part 651, and the increasing ratios of the pitch (tl) and the pitch (t2) may be different from each other.
- first elastic part and the second elastic part 653 may be wound at pitches (tl and t2) increased and decreased alternatively as it goes from both end coils 592 toward the mass part 651, and the increasing ratios of the pitch (tl) and the pitch (t2) may be different from each other.
- one of the first and second elastic parts 652 and 653 is wound at regular pitches, but the other elastic part may be wound at pitches increased as it goes toward the mass part 651.
- one of the first and second elastic parts 652 and 653 is wound at regular pitches, but the other elastic part may be wound at pitches decreased as it goes toward the mass part 651.
- one of the first and second elastic parts 652 and 653 is wound at regular pitches, but the other elastic part may be wound at pitches increased and decreased alternately as it goes toward the mass part 651.
- the compressor main body may be supported at the casing by properly disposing coil springs constituting a supporting unit of the reciprocating compressor in accordance with each embodiment of the present invention.
- a rotor 330 and a piston 420 are moved together in a direction of the electromagnetic force, and simultaneously, the piston 420 linearly reciprocates in a cylinder by front and rear resonant springs 510, 520, thereby generating a pressure difference in a compressing space of the cylinder 410.
- a series of processes of sucking a refrigerant gas into the compressing space (P) and compressing the sucked refrigerant gas until the pressure reaches a certain level and then discharging the compressed refrigerant gas is repeatedly performed.
- the coil spring 610, 620 for supporting the compressor main body 700 includes a mass part functioning as a kind of mass body by being tightly wound.
- an elastic part having predetermined pitches is formed near the mass part. Accordingly, the coil spring provides not only an elastic force which is a fundamental property as a coil spring but also high lateral stiffness, thereby attenuating a lateral displacement of the compressor main body and thus effectively reducing the vibration of the compressor.
- a reciprocating compressor having a supporting unit attenuating a lateral displacement can minimize lateral vibration of the compressor, which is generated in a direction that a reciprocating motor is operated when the reciprocating compressor is in operation.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112004001771T DE112004001771B4 (en) | 2003-09-22 | 2004-09-02 | Reciprocating compressor with a lateral displacement damping support unit |
US10/572,954 US20080232984A1 (en) | 2003-09-22 | 2004-09-02 | Reciprocating Compressor Having Supporting Unit Attentuating Lateral Displacement Thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030065648A KR100548441B1 (en) | 2003-09-22 | 2003-09-22 | Apparatus for reducing lateral displacement of reciprocating compressor |
KR10-2003-0065648 | 2003-09-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005028868A1 true WO2005028868A1 (en) | 2005-03-31 |
Family
ID=36643438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2004/002223 WO2005028868A1 (en) | 2003-09-22 | 2004-09-02 | Reciprocating compressor having supporting unit attenuating lateral dislacement thereof |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080232984A1 (en) |
KR (1) | KR100548441B1 (en) |
CN (1) | CN100412364C (en) |
DE (1) | DE112004001771B4 (en) |
WO (1) | WO2005028868A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006009256A1 (en) * | 2006-02-28 | 2007-08-30 | BSH Bosch und Siemens Hausgeräte GmbH | Compressor apparatus for household cooling equipment e.g. refrigerator, freezer has linear drive having adjustable rotor zero position, and linear compressor having adjustable piston zero position |
CN102889192B (en) * | 2011-07-19 | 2015-03-18 | 中国科学院理化技术研究所 | Linear compressor driven by using moving magnetic type linear oscillation motor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0633877A (en) * | 1992-07-10 | 1994-02-08 | Sanyo Electric Co Ltd | Sealed compressor |
WO2001098658A2 (en) * | 2000-06-20 | 2001-12-27 | Empresa Brasileira De Compressores S.A. - Embraco | Suspension system for a reciprocating hermetic compressor |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1963054A (en) * | 1933-08-14 | 1934-06-12 | Powers Spring Corp | Wire spring |
US2932474A (en) * | 1957-10-07 | 1960-04-12 | Gen Electric | Vibration mount |
US3058705A (en) * | 1958-03-26 | 1962-10-16 | Westinghouse Electric Corp | Resilient support system for vertical axis motor compressor unit |
DE2506420C3 (en) * | 1975-02-15 | 1982-03-11 | Gebrüder Ahle, 5253 Lindlar | Non-cylindrical, coiled compression spring made of wire with a circular cross-section, in particular for use in motor vehicles |
US5246215A (en) * | 1989-06-16 | 1993-09-21 | Nhk Spring Co., Ltd. | Spring seat member with notch for ground spring end |
KR19980078419A (en) * | 1997-04-28 | 1998-11-16 | 윤종용 | Vibration reducing device of the compressor |
JPH11159551A (en) * | 1997-11-27 | 1999-06-15 | Tama Spring:Kk | Non-linear deformed coil spring |
BR9802262A (en) * | 1998-06-05 | 2000-03-08 | Stumpp & Schuele Do Brasil Ind | Improvement in suspension for hermetic refrigeration compressors. |
KR200234713Y1 (en) * | 1998-12-31 | 2001-11-22 | 구자홍 | Frame Supporting Device of Electric Compressor |
JP4016370B2 (en) * | 1999-03-29 | 2007-12-05 | 株式会社デンソー | solenoid valve |
US6264183B1 (en) * | 1999-08-19 | 2001-07-24 | Precision Products Group | Methods of manufacturing coils and apparatus for same |
DE60312387T2 (en) * | 2002-10-31 | 2007-11-08 | Matsushita Refrigeration Co., Kusatsu | MOTORIZED HERMETIC COMPRESSOR AND COOLING DEVICE |
-
2003
- 2003-09-22 KR KR1020030065648A patent/KR100548441B1/en not_active IP Right Cessation
-
2004
- 2004-09-02 WO PCT/KR2004/002223 patent/WO2005028868A1/en active Application Filing
- 2004-09-02 US US10/572,954 patent/US20080232984A1/en not_active Abandoned
- 2004-09-02 DE DE112004001771T patent/DE112004001771B4/en not_active Expired - Fee Related
- 2004-09-02 CN CNB2004800273465A patent/CN100412364C/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0633877A (en) * | 1992-07-10 | 1994-02-08 | Sanyo Electric Co Ltd | Sealed compressor |
WO2001098658A2 (en) * | 2000-06-20 | 2001-12-27 | Empresa Brasileira De Compressores S.A. - Embraco | Suspension system for a reciprocating hermetic compressor |
Also Published As
Publication number | Publication date |
---|---|
KR100548441B1 (en) | 2006-02-02 |
DE112004001771T5 (en) | 2006-07-20 |
CN100412364C (en) | 2008-08-20 |
US20080232984A1 (en) | 2008-09-25 |
DE112004001771B4 (en) | 2008-05-15 |
CN1856648A (en) | 2006-11-01 |
KR20050029396A (en) | 2005-03-28 |
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