CN1746503A - Scroll compressor having vacuum preventing structure - Google Patents

Scroll compressor having vacuum preventing structure Download PDF

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Publication number
CN1746503A
CN1746503A CNA2005100560521A CN200510056052A CN1746503A CN 1746503 A CN1746503 A CN 1746503A CN A2005100560521 A CNA2005100560521 A CN A2005100560521A CN 200510056052 A CN200510056052 A CN 200510056052A CN 1746503 A CN1746503 A CN 1746503A
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CN
China
Prior art keywords
back pressure
pressure passage
scroll compressor
preventing structure
vacuum preventing
Prior art date
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.)
Pending
Application number
CNA2005100560521A
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Chinese (zh)
Inventor
俞炳吉
崔世宪
南重元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of CN1746503A publication Critical patent/CN1746503A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A scroll compressor having a vacuum preventing structure includes: a casing forming a receiving space therein; a fixed scroll fixed to a main frame installed in the casing, and including a back pressure passage at an outer side surface thereof, a discharge pressure hole formed at one side of the back pressure passage such that the back pressure passage and a discharge pressure space of the casing can communicate with each other, a middle pressure hole formed at another side of the back pressure passage such that the back pressure passage and a compression space of the casing can communicate with each other, and a suction pressure hole formed at still another side of the back pressure passage such that the back pressure passage and a suction pressure space can communicate with each other; an orbiting scroll positioned between the fixed scroll and the main frame and forming a compression space by being coupled with the fixed scroll; a piston slidably installed in the back pressure passage, for opening or closing the discharge pressure hole; an elastic member installed in the back pressure passage, for supporting the piston; and a stopper for closing an inlet of the back pressure passage.

Description

Scroll compressor with vacuum preventing structure
Technical field
The present invention relates to have the scroll compressor of vacuum preventing structure, more particularly, the present invention relates to a kind of scroll compressor with such vacuum preventing structure, wherein for example find time or abnormal operation that expansion valve blocks during, this vacuum preventing structure can prevent that towards the swabbing pressure side reflux vacuum from appearring in compressor by the gas that makes the discharge pressure side.
Background technique
In general, compressor is transformed into the potential of compression fluid to mechanical energy, can be divided into reciprocal compressor, scroll compressor, centrifugal compressor and vane compressor.
In the middle of them, be different from the reciprocal compressor of the straight reciprocating motion that utilizes opening/closing spare, scroll compressor utilize rotating main body like that with centrifugal compressor or vane compressor and aspirate, compression and exhausting air.
Fig. 1 is the longitudinal sectional drawing that shows traditional scroll compressor, and Fig. 2 is the zoomed-in view that shows pith among Fig. 1.
As shown in the figure, this traditional scroll compressor comprises: the housing 11 that forms holding space therein; Admit and be installed in the press part 31 that is used for compressed refrigerant in this housing 11; And the motor section 21 that is used for driving force is fed to this press part 31.
Be used to aspirate the side that suction pipe 13 and discharge pipe 15 with refrigerant emission are formed on this housing 11, and upper frame 17 and underframe 19 are installed in dividually and vertically in this housing, to support this press part 31 and this motor section 21.
This press part 31 comprises fixed eddy plate (fixed scroll) 33 and around movable orbiting scroll (orbitingscroll) 35, this fixed eddy plate 33 has the scrollwork (warp) 34 of involute shape and is fixedly mounted on this upper frame 17, and the scrollwork 37 that has involute shape around movable orbiting scroll 35, should connect with this fixed eddy plate 33 around movable orbiting scroll, with mutual formation compression volume (S), and when carrying out relative movement with respect to this fixed eddy plate 33 compressed refrigerant.
High/low pressure separating plate 39 is used for this housing 11 inside are separated into discharge pressure space (S2) and swabbing pressure space (S1), and wherein this high/low pressure separating plate 39 combines with this fixed eddy plate 33.
This motor section 21 comprises the stator 23 that is fixedly mounted in this housing 11 and has the rotating shaft 27 of eccentric part 28, rotatably holds and be installed in rotor 25 on this stator 23 based on the side at it.
Simultaneously, in the situation that this is found time or in the situation that expansion valve blocks, this swabbing pressure space (S1) becomes high vacuum.At this moment wait, the constituent element of this compressor may be owing to catch fire or fracture and destroyed.
In order to prevent that this problem from occurring, and provides a kind of vacuum preventer 41 in conventional art.
This vacuum preventer 41 comprises: from these fixed eddy plate 33 sides along the back pressure passage 43 that radially forms with predetermined depth; Be formed on the discharge pressure hole 44 that this back pressure passage 43 is communicated with this discharge pressure space (S2); Be formed on the intermediate pressure port 45 that these back pressure passage 43 bottoms make this back pressure passage 43 be communicated with this compression volume (P); Be slidably received within the piston 47 that is used to open or close this discharge pressure hole 44 in this back pressure passage 43; Be used for elastic force is applied to piston 47, thereby this piston 47 can move by side to the spring 48 that this piston 47 is opened the position in this discharge pressure hole 44 from one; Be inserted in the stopper 46 of these back pressure passage 43 inlet sides; And be used for fixing the fixing pin 50 of this stopper 46 to prevent that this stopper 46 from separating.
Be used for back pressure passage 43 is penetrated the center that is formed on this stopper 46 with the swabbing pressure hole 49 that this swabbing pressure space (S1) is communicated with.Be used for the pin-and-hole 36 that this fixing pin 50 inserts and is attached on this fixed eddy plate 33 is formed on this fixed eddy plate 33.
Yet in having traditional scroll compressor of this structure, this piston and spring are installed in this back pressure passage, and this stopper is fixed by this fixing pin is inserted in the pin-and-hole simultaneously, thereby makes assembling very difficult.In addition, very low because this pin-and-hole is positioned at the outer rim of this fixed eddy plate 33 around the intensity of this pin-and-hole, so this fixed eddy plate damages easily.
In addition, the refrigerant gas in this discharge pressure space (S2) flow into this back pressure passage 43 via this discharge pressure hole 44, and the refrigerant gas that has flow into this back pressure passage 43 flow into this swabbing pressure space (S1) via this swabbing pressure hole 49.At this moment, this high temperature refrigerant gas bears flow resistance, stops the driving of this motor section 21.Therefore, need the more relatively time of cost to discharge the vacuum of this scroll compressor.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of scroll compressor with vacuum preventing structure, this scroll compressor can be assembled easily and can be fast and prevent during abnormal operation damage to parts effectively.
For realizing these and other advantage of the present invention, according to purpose of the present invention concrete and that briefly describe here, provide a kind of scroll compressor with vacuum preventing structure, this scroll compressor comprises: the housing that forms holding space therein; Be fixed to and be installed in the fixed eddy plate on the main frame in this housing, this fixed eddy plate comprises: thereby thereby thereby in the back pressure passage of its outer surface, be formed on discharge pressure hole that the discharge pressure space of this back pressure passage of back pressure passage one side and housing can communicate, swabbing pressure hole that the intermediate pressure port that the compression volume that is formed on this back pressure passage of back pressure passage opposite side and housing can communicate and this back pressure passage of another side that is formed on back pressure passage and swabbing pressure space can communicate; Around movable orbiting scroll, be somebody's turn to do around movable orbiting scroll between this fixed eddy plate and this main frame, and form compression volume by combining with this fixed eddy plate; Connect slidably the piston that is used to open or close this discharge pressure hole in this back pressure passage is installed; Be installed in the elastic element that this back pressure passage is used for support piston; And the stopper that is used to close the back pressure passage inlet.
By below in conjunction with the accompanying drawing detailed description of the invention, other purpose aforementioned and of the present invention, feature, aspect and advantage will become more obvious.
Description of drawings
The accompanying drawing that comprises provides further to be understood the present invention, incorporates and form a specification part simultaneously into, and these accompanying drawings show embodiment and are used for illustrating principle of the present invention with specification.
In the accompanying drawings:
Fig. 1 is the longitudinal sectional drawing that shows this tradition scroll compressor;
Fig. 2 is the zoomed-in view that shows pith among Fig. 1;
Fig. 3 shows the longitudinal sectional drawing of the scroll compressor that has vacuum preventing structure according to an embodiment of the invention;
Fig. 4 is the zoomed-in view that shows pith among Fig. 3;
Fig. 5 is the longitudinal sectional drawing that shows the stopper that combines with back pressure passage in this scroll compressor, and wherein this scroll compressor has vacuum preventing structure according to an embodiment of the invention;
Fig. 6 is the side view that shows stopper in this scroll compressor, and wherein this scroll compressor has vacuum preventing structure according to an embodiment of the invention; And
Fig. 7 is the longitudinal sectional drawing that shows the scroll compressor that has vacuum preventing structure in accordance with another embodiment of the present invention.
Embodiment
Below will be in detail with reference to the preferred embodiments of the present invention, wherein shown in the drawings preferred
Embodiment's example.
Hereinafter, the scroll compressor that has vacuum preventing structure according to of the present invention is described with reference to the accompanying drawings.
Fig. 3 shows the longitudinal sectional drawing that has the vacuum preventing structure scroll compressor according to an embodiment of the invention, Fig. 4 is the zoomed-in view that shows pith among Fig. 3, Fig. 5 is the longitudinal sectional drawing that shows the stopper that combines with back pressure passage in this scroll compressor, wherein this scroll compressor has vacuum preventing structure according to an embodiment of the invention, Fig. 6 is the side view that shows stopper in this scroll compressor, and wherein this scroll compressor has vacuum preventing structure according to an embodiment of the invention.
As shown in the figure, having according to an embodiment of the invention, this scroll compressor of vacuum preventing structure comprises: the housing 111 that forms the sealing holding space therein; Be contained in this housing 111, be used for the press part 131 of compressed refrigerant; And the motor section 121 that is used for driving force is fed to this press part 131.This motor section 121 comprise the stator 123 that is fixedly mounted in this housing 111 and based on the rotating shaft 127 that has eccentric part 128 in the one side, be rotatably installed in the rotor 125 on this stator 123.
This press part 131 comprises: fixed eddy plate 133 and around movable orbiting scroll 135, this fixed eddy plate 133 has the scrollwork 134 of involute shape and is fixedly mounted on this upper frame 117, and have the scrollwork 136 of involute shape and connect with this fixed eddy plate 133 around movable orbiting scroll 135, with mutual formation refrigeration agent compression volume (P), its underpart connects with this eccentric part 128, and when carrying out relative movement with respect to this fixed eddy plate 133 compressed refrigerant.High/low pressure separating plate 139 is used for this housing 111 inside are separated into discharge pressure space (S2) and swabbing pressure space (S1), and wherein this high/low pressure separating plate 139 combines with the upper surface of this fixed eddy plate 133.
Simultaneously, vacuum preventer 151 is installed in this fixed eddy plate 133, and wherein this vacuum preventer 151 is used to prevent to be in housing 111 inside the continuation progress of vacuum state lower compression.
In this vacuum preventer 151 according to scroll compressor of the present invention, back pressure passage 153 is formed on the side of this fixed eddy plate 133 with predetermined depth, be used to make back pressure passage 153 to be formed on back pressure passage 153 tops with the discharge pressure hole 155 that this discharge pressure space (S2) is communicated with, the intermediate pressure port 157 that is used to back pressure passage 153 is communicated with this compression volume (P) is formed on a side of the bottom of back pressure passage 153, and the swabbing pressure hole 159 that is used to back pressure passage 153 is communicated with this swabbing pressure space (S1) is formed on the opposite side of back pressure passage 153.
Back pressure passage 153 and the parallel formation of these fixed eddy plate 133 upper surfaces, and this swabbing pressure hole 159 tilts with respect to back pressure passage 153.
Piston 161 is slidably mounted in this back pressure passage 153, so as for example find time or abnormal operation that expansion valve blocks during open or seal this discharge pressure hole 155 selectively.
The stopper 165 that is used to close back pressure passage 153 is installed in the inlet of back pressure passage 153, and spring 163 is installed between this piston 161 and the stopper 165.
One side of this spring 163 is fixed on this stopper 165, and the opposite side of this spring 163 is fixed on the piston 161.
Piston 161 is closed discharge pressure hole 155 during normal running, and 161 in this piston moves during abnormal operation, so that this discharge pressure hole 155 is communicated with this swabbing pressure hole 159.
Spring supporting portion 168 contacts and supports this spring 163 with the end of this spring 163, and this spring supporting portion 168 is formed on the end, inserting side that is inserted in the stopper 165 in this back pressure passage 153.Guide portion 167 is stretched out from this spring supporting portion, and its diameter vertically little by little reduces along back pressure passage 153, and wherein this guide portion 167 is formed on these spring supporting portion 168 1 sides, so that these spring 163 ends are directed on this spring supporting portion 168.
Internal thread part 154 is formed on the inlet of back pressure passage 153, and is formed on this stopper 165 with the external thread part 166 of these internal thread part 154 scyewed joint.Criss-cross instrument insertion groove 170 is recessed on the uncoated end portion of this stopper 165, this uncoated end portion is exposed to the outside of back pressure passage 153, thereby the instrument that stopper 165 is rotated of flathead screwdriver for example or cross head driver can be embedded in this instrument insertion groove 170.Here, this instrument insertion groove 170 can be designed to the spanner groove, so that the hexagon nut spanner inserts wherein.
In addition, the swabbing pressure hole 159 that is used to back pressure passage 153 is communicated with this swabbing pressure space (S1) penetrates and is formed on back pressure passage 153, thereby when opened in this discharge pressure hole 155, the high-temperature gas in this swabbing pressure space (S2) can flow towards motor section 121 fast.
Simultaneously, Fig. 7 is the longitudinal sectional drawing that shows other embodiment's the scroll compressor with vacuum preventing structure according to the present invention.
As shown in Figure 7, be formed with heavy section 173, in this heavy section 173, a part on this fixed eddy plate 133 is thicker than another part, and is formed on this heavy section 173 perpendicular to the swabbing pressure hole 175 of back pressure passage 153.
Hereinafter, describe the operation of scroll compressor with reference to Fig. 3 to Fig. 5, wherein this scroll compressor has the vacuum preventing structure according to the one embodiment of the invention of band suction structure.
When this scroll compressor of assembling, by piston 161 and spring 163 are inserted in the back pressure passage 153, guide portion 167 at stopper 165 is inserted under back pressure passage 153 states, the instrument (not shown) is engaged in the instrument insertion groove 170 of this stopper 165, and these stopper 165 spirals being connected in back pressure passage 153 by rotating this stopper 165, the user can easily be assemblied in this stopper 165 in the back pressure passage 153.
Simultaneously, under the compressor normal operation, when suction and compressed refrigerant under the effect of this compression volume (P) pressure, this piston 161 moves on to the position that discharge pressure hole 155 is closed.At this moment wait, these spring 163 compressions are also gathered elastic force.
On the other hand, under the abnormal operation situation, stop to be drawn under housing 111 states at this refrigeration agent, when compressing, the pressure of this compression volume (P) reduces, and utilizes the elastic force of this spring 163 simultaneously, and piston 161 moves on on the position of opening in discharge pressure hole 155.Therefore, the high temperature refrigerant that is present in discharge pressure space (S2) flows into back pressure passage 153, and the high temperature refrigerant gas of introducing flows towards motor section 121 fast via this swabbing pressure hole 159.When this high temperature refrigerant gas when motor section 121 flows, the device (not shown) operation that prevents to overload, thereby stop the driving of this motor section 121, the inside of this housing 111 has stoped the high vacuum state that is in early whereby, and owing to having prevented effectively that vacuumizing from having prevented because the damage that parts catch fire, degeneration and fault cause.
As described in up to the present, according to the present invention, do not utilizing under the fixing pin situation, this stopper can easily be assembled in this back pressure passage, and destructible general issues is resolved around the pin-and-hole simultaneously.
In addition, because via the swabbing pressure hole that is connected to back pressure passage, the refrigerant gas in this discharge pressure space is not having under the resistance situation fast this swabbing pressure space of flow speed and direction, because the parts that cause in housing inner height vacuum during abnormal operation burn out, degeneration and fault can prevent effectively.
Because the present invention can have some forms when not breaking away from its spirit or necessary characteristic, therefore it is to be further understood that, unless otherwise mentioned, the foregoing description can't help above to describe any details restriction, but should think briefly that in the spirit and scope that the accessory claim book limits the equivalency range that therefore belongs to the interior all changes of claims scope and modification or this scope is included by additional claims.

Claims (15)

1. scroll compressor with vacuum preventing structure comprises:
Form the housing of holding space therein;
Be fixed to and be installed in the fixed eddy plate on the main frame in this housing, this fixed eddy plate comprises: thereby thereby thereby in the back pressure passage of its outer surface, be formed on discharge pressure hole that the discharge pressure space of this back pressure passage of back pressure passage one side and housing can communicate, swabbing pressure hole that the intermediate pressure port that the compression volume that is formed on this back pressure passage of back pressure passage opposite side and housing can communicate and this back pressure passage of another side that is formed on back pressure passage and swabbing pressure space can communicate;
Around movable orbiting scroll, be somebody's turn to do around movable orbiting scroll between this fixed eddy plate and this main frame, and form compression volume by combining with this fixed eddy plate;
The piston that is used to open or close this discharge pressure hole in this back pressure passage is installed slidably;
Be installed in the elastic element that this back pressure passage is used for support piston; And
Be used to close the stopper of back pressure passage inlet.
2. the scroll compressor with vacuum preventing structure as claimed in claim 1, wherein this back pressure passage is parallel with this fixed eddy plate upper surface.
3. the scroll compressor with vacuum preventing structure as claimed in claim 1, wherein this swabbing pressure hole tilts with respect to this back pressure passage.
4. the scroll compressor with vacuum preventing structure as claimed in claim 1, wherein this swabbing pressure hole is perpendicular to this back pressure passage.
5. the scroll compressor with vacuum preventing structure as claimed in claim 1, wherein internal thread forms on the inner circumferential surface of back pressure passage inlet, and corresponding outside thread is formed on the external peripheral surface of this stopper.
6. the scroll compressor with vacuum preventing structure as claimed in claim 1, wherein guide portion is formed on the end of this stopper.
7. the scroll compressor with vacuum preventing structure as claimed in claim 1, wherein the instrument insertion groove is formed on the end of this stopper.
8. scroll compressor with vacuum preventing structure comprises:
Form the housing of holding space therein;
Be fixed to and be installed in the fixed eddy plate on the main frame in this housing, this fixed eddy plate comprises: thereby thereby in the back pressure passage of its outer surface, be formed on the intermediate pressure port that the discharge pressure hole that the discharge pressure space of this back pressure passage of back pressure passage one side and housing can communicate and the compression volume that is formed on this back pressure passage of back pressure passage opposite side and housing can communicate;
Around movable orbiting scroll, be somebody's turn to do around movable orbiting scroll between this fixed eddy plate and this main frame, and form compression volume by combining with this fixed eddy plate;
Connect slidably the piston that is used to open or close this discharge pressure hole in this back pressure passage is installed;
Be installed in the elastic element that this back pressure passage is used to support this piston; And
Be used to close the stopper of back pressure passage inlet.
9. the scroll compressor with vacuum preventing structure as claimed in claim 8, wherein this back pressure passage is parallel with this fixed eddy plate upper surface.
10. the scroll compressor with vacuum preventing structure as claimed in claim 9, wherein this swabbing pressure hole tilts with respect to this back pressure passage.
11. the scroll compressor with vacuum preventing structure as claimed in claim 9, wherein this swabbing pressure hole is perpendicular to this back pressure passage.
12. the scroll compressor with vacuum preventing structure as claimed in claim 8, wherein internal thread forms on the inner circumferential surface of back pressure passage inlet, and correspondingly outside thread is formed on the external peripheral surface of this stopper.
13. the scroll compressor with vacuum preventing structure as claimed in claim 8, wherein this guide portion is formed on the end of this stopper.
14. the scroll compressor with vacuum preventing structure of claim 8, wherein the instrument insertion groove is formed on the end of this stopper.
15. the scroll compressor with vacuum preventing structure as claimed in claim 8, wherein this swabbing pressure hole is formed on the another side of back pressure passage, thereby the swabbing pressure space of this back pressure passage and this housing can communicate.
CNA2005100560521A 2004-09-10 2005-03-21 Scroll compressor having vacuum preventing structure Pending CN1746503A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020040072691A KR100677248B1 (en) 2004-09-10 2004-09-10 Vacuum prevention apparatus for scroll compressor
KR1020040072691 2004-09-10
KR1020040072693 2004-09-10

Publications (1)

Publication Number Publication Date
CN1746503A true CN1746503A (en) 2006-03-15

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ID=36166165

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Application Number Title Priority Date Filing Date
CNA2005100560521A Pending CN1746503A (en) 2004-09-10 2005-03-21 Scroll compressor having vacuum preventing structure

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CN (1) CN1746503A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330677A (en) * 2010-07-12 2012-01-25 Lg电子株式会社 Scroll compressor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101484538B1 (en) * 2008-10-15 2015-01-20 엘지전자 주식회사 Scoroll compressor and refrigsrator having the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153486A (en) 1984-08-22 1986-03-17 Hitachi Ltd Scroll compressor
JPH06100184B2 (en) * 1988-06-28 1994-12-12 松下電器産業株式会社 Scroll gas compressor
JP3132888B2 (en) * 1992-04-01 2001-02-05 株式会社日本自動車部品総合研究所 Scroll type variable capacity compressor
JP3136132B2 (en) 1997-08-21 2001-02-19 ティカムセ・プロダクツ・カンパニー Scroll compressor
KR100317379B1 (en) * 1999-12-10 2001-12-24 구자홍 Apparatus for preventing vacuum compression of scroll compressor
KR100343722B1 (en) * 2000-02-17 2002-07-20 엘지전자주식회사 Apparatus for preventing vacuum compression of scroll compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330677A (en) * 2010-07-12 2012-01-25 Lg电子株式会社 Scroll compressor
CN102330677B (en) * 2010-07-12 2015-07-01 Lg电子株式会社 Scroll compressor
US9145891B2 (en) 2010-07-12 2015-09-29 Lg Electronics Inc. Scroll compressor

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KR20060023812A (en) 2006-03-15
KR100677248B1 (en) 2007-02-02

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