CN101506527A - Variable capacity type rotary compressor - Google Patents

Variable capacity type rotary compressor Download PDF

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Publication number
CN101506527A
CN101506527A CNA2007800315512A CN200780031551A CN101506527A CN 101506527 A CN101506527 A CN 101506527A CN A2007800315512 A CNA2007800315512 A CN A2007800315512A CN 200780031551 A CN200780031551 A CN 200780031551A CN 101506527 A CN101506527 A CN 101506527A
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CN
China
Prior art keywords
connecting tube
rotary compressor
blade
housing
cylinder assembly
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.)
Granted
Application number
CNA2007800315512A
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Chinese (zh)
Other versions
CN101506527B (en
Inventor
赵承衍
卞想明
韩定旻
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
Priority claimed from KR1020060114770A external-priority patent/KR100795958B1/en
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority claimed from PCT/KR2007/004090 external-priority patent/WO2008023962A1/en
Publication of CN101506527A publication Critical patent/CN101506527A/en
Application granted granted Critical
Publication of CN101506527B publication Critical patent/CN101506527B/en
Expired - Fee Related legal-status Critical Current
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    • 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
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • 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
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/18—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
    • 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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F04C29/0035—Equalization of pressure pulses
    • 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
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A variable capacity type rotary compressor is provided. An inlet of a connection pipe connected to a rear surface or a front surface of a vane is arranged to be higher than a surface of oil. Accordingly, pressure applied to the rear or front surface of the vane is rapidly varied, thus to enable an operation mode of the compressor to be rapidly converted. Also, pressure applied to the rear or front surface of the vane can be constantly maintained, which decreases fluctuation of the vane, thereby enabling reduction of noise of the compressor.

Description

Variable capacity type rotary compressor
Technical field
The present invention relates to a kind of rotary compressor.
Background technique
The air-conditioning system of common Ying Yu of rotary compressor such as air-conditioning.Recently, because air-conditionings etc. have multiple function, so need the product of capacity so as to changing of rotary compressor.The known capacity that has several technology to be used to change rotary compressor.Example wherein can be, uses inverter motor to control the technology of the number of revolution (being RPM) of compressor, and mechanically controls blade carrying out the technology of idle running, or the like.
Summary of the invention
Technical problem
At first, in the technology of using inverter motor, the purchase cost height of inverter motor.In addition, it is more difficult than strengthen refrigerating capacity under heated condition to strengthen refrigerating capacity under the state of cooling.
On the other hand, mechanically control blade and adopt two kinds of methods with the technology of carrying out idle running.First method is embodied as makes the pressure of refrigeration agent of the compression volume be applied to cylinder change with restriction/release blade.Second method is embodied as makes the refrigerant pressure that is applied to the blade rear surface change with restriction/release blade.Yet,,, should carry out the conversion of the pressure that puts on blade front surface or rear surface rapidly in order to reduce the microphonic noise of blade apace mechanically controlling blade to carry out in the technology that dallies.If oil excessively flow in the front surface or rear surface of blade, so You viscosity may make the conversion rate of the pressure at blade front surface or place, rear surface reduce.In addition, at the edge-on floating pressure that promptly produces of front surface side or rear surface of blade, this fluctuates blade tempestuously, thereby has increased microphonic noise.
Technological scheme
Therefore, in order to solve the problem of variable capacity type rotary compressor in the prior art, the purpose of this invention is to provide a kind of like this variable capacity type rotary compressor, in this rotary compressor, by preventing that excessive oil from flowing in the front surface or rear surface of blade, make to put on the front surface of blade or the pressure of rear surface can promptly transform, thereby can realize the reduction of buffeting of vane noise.
In order to realize purpose of the present invention, a kind of variable capacity type rotary compressor is provided, this rotary compressor comprises: housing, described housing have and are used for oil is contained in wherein inner space; Drive motor, described drive motor are arranged in the inner space of described housing and produce driving force; Cylinder assembly, described cylinder assembly is arranged in the inner space of described housing, and has the compression volume that is used for compressed refrigerant; At least one rotary plunger of moving in the compression volume of described cylinder assembly; Be coupled at least one blade of described cylinder assembly, described at least one blade separates with described rotary plunger or contacts so that described compression volume is divided into suction chamber and pressing chamber; And at least one connecting tube, described at least one connecting tube makes the inner space of described housing can be connected to described cylinder assembly, so that the internal pressure of described housing can be applied to described blade, wherein, described connecting tube is coupled to described housing, makes the surperficial high position of the oil that the end of described connecting tube can hold in than the inner space at described housing be connected to described housing.
Advantageous effects
In variable capacity type rotary compressor according to the present invention, the connecting tube that is connected in blade front side or rear side is arranged to higher than the surface of oil, thereby prevents that oil from flowing in the front surface or rear surface of blade.Therefore, the pressure of the front surface of blade or rear surface changes fast can change the mode of operation of compressor rapidly.In addition, can keep the pressure of blade front surface or rear surface consistently, so that reduce the microphonic noise of blade effectively.
Description of drawings
Fig. 1 is the stereogram that illustrates according to exemplary variable capacity type rotary compressor of the present invention;
Fig. 2 is the longitudinal sectional view that illustrates according to exemplary variable capacity type rotary compressor of the present invention;
Fig. 3 is the sectional view along the intercepting of the line I-I in the compressor of Fig. 2;
Fig. 4 is the horizontal cross of link position that the compressor mesohigh side connecting tube of Fig. 2 is shown;
Fig. 5 is the horizontal cross of dynamic mode that the compressor of Fig. 2 is shown;
Fig. 6 is the horizontal cross of energy saver mode that the compressor of Fig. 2 is shown;
Fig. 7 is the horizontal cross of another mode of execution that the compressor of Fig. 2 is shown;
Fig. 8 is the longitudinal sectional view of another mode of execution of link position that the compressor mesohigh side connecting tube of Fig. 2 is shown; And
Fig. 9 is the longitudinal sectional view of another mode of execution of link position that the compressor mesohigh side connecting tube of Fig. 2 is shown.
Embodiment
Hereinafter, preferred implementation according to the present invention with reference to the accompanying drawings is described in detail variable capacity type rotary compressor.
As depicted in figs. 1 and 2, variable capacity type rotary compressor according to the present invention comprises: housing 100, and a plurality of exhaust tube SP1 and SP2 and an outlet pipe DP are connected with housing 100; Be arranged on the motor part 200 of the upside of housing 100, in order to produce rotating force; Be arranged on first press part 300 and second press part 400 of the downside of housing 100, described press part 300 and 400 comes compressed refrigerant in order to the rotating force that produces by motor part 200; Valve cell 500, valve cell 500 is converted into hyperbaric environment or environment under low pressure with the rear surface of second blade 440 of second press part 400, thereby second press part 400 can be worked under dynamic mode or energy saver mode; And linkage unit 600, linkage unit 600 make valve cell 500 can be connected to housing and second press part 400 both so that second press part 400 can be by valve cell 500 controls.
Motor part 200 refers to constant speed and is driven or with the driven motor of inverse method.Motor part 200 comprises: be fixed in the stator 210 of the inside of housing 100, stator 210 receives the electric power that applies from the external world; Be arranged on rotor 220 in the stator 210, rotor 220 and stator 210 collaborative rotations with certain air clearance; And running shaft 230, running shaft 230 is coupled to rotor 220, rotating force is delivered to first press part 300 and second press part 400.
As shown in Figure 2, first press part 300 comprises: first cylinder, 310, the first cylinders 310 constitute the part of first cylinder assembly, are annular, and are arranged in the housing 100; And the upper support plate 320 that is coupled to the upside of first cylinder 310 and downside respectively (promptly, be called upper support hereinafter) and intermediate support plates 330 is (promptly, be called middle supporting), thus constitute first cylinder assembly with first cylinder 310 with first compression volume V1.
First press part 300 also can comprise: first rotary plunger, 340, the first rotary plungers 340 rotatably are coupled to the last eccentric part of running shaft 230, to come compressed refrigerant by moving (pivot) in the first compression volume V1 of first cylinder 310; With first blade 350, first blade 350 is coupled to first cylinder 310 with on the outer surface that is crushed on first rotary plunger 340 in the mode that can radially move, and the first compression volume V1 of first cylinder 310 is separated into first suction chamber and first pressing chamber.
First press part 300 also can comprise: be used as the blade supported spring 360 of pressure spring, thereby flexibly support the rear side of first blade 350; First escape cock 370, this first escape cock 370 is coupled to the end that is formed near the discharge orifice 321 upper support 320 middle parts in mode to be opened/closed, to regulate the discharging of the refrigerant gas of discharging from first pressing chamber of the first compression volume V1; And first baffler 380 that is coupled to upper support 320, this first baffler 380 has certain internal capacity to allow first escape cock 370 be contained in wherein.
As shown in Figure 2, second press part 400 comprises: second cylinder 410, and this second cylinder 410 constitutes the part of second cylinder assembly, is annular, and is arranged on the downside of first cylinder 310 in the housing 100; And the intermediate support 330 and the lower support 420 that are coupled to the upside and the downside of second cylinder 410 respectively, to constitute second cylinder assembly with second compression volume V2 with second cylinder 410.
Second press part 400 also can comprise: second rotary plunger, 430, the second rotary plungers 430 rotatably are coupled to the following eccentric part of running shaft 230, to come compressed refrigerant by moving (pivot) in the second compression volume V2 of second cylinder 410; With second blade 440, second blade 440 is coupled to second cylinder 410 separating on the outer surface that is crushed on second rotary plunger 430 or with this outer surface in the mode that can radially move, and the second compression volume V2 of second cylinder 410 is separated into second suction chamber and second pressing chamber or second suction chamber is communicated with second pressing chamber.
Second press part 400 also can comprise: second escape cock 450, this second escape cock 450 is coupled to the end that is formed near second discharge orifice 421 lower support 420 middle parts in mode to be opened/closed, so that regulate the discharging of the refrigerant gas of discharging from second pressing chamber; And second baffler 460 that is coupled to lower support 420, this second baffler 460 has certain internal capacity, to allow second escape cock 450 be contained in wherein.
As shown in Figure 3, second cylinder 410 comprises: second blade groove, 411, the second blade grooves 411 are arranged on a side of the interior perimeter surface that forms the second compression volume V2, to allow second blade 440 to-and-fro motion radially; Along the circumferential direction be formed on second suction bole 412 of a side of second blade groove 411, refrigeration agent is incorporated among the second compression volume V2; And the second discharging steering channel (not shown) that is formed on the opposite side of second blade groove 411, this second discharging steering channel forms in the axial direction, so that refrigeration agent can be discharged in the housing 100.
Radially rear side at second blade groove 411 is provided with vane room 413, and this vane room 413 is arranged to be communicated with the public connecting tube 630 of linkage unit 600 with sealing state.In addition, vane room 413 to be being arranged on the inside of housing 100 with the mode of the internal communication of housing 100, thereby provides swabbing pressure Ps or discharging fluid power Pd to the rear side of second blade 440.Vane room 413 has specific internal capacity, even move on to when being contained in second blade groove 411 after making second blade 440 fully, the rear surface of second blade 440 also can form the pressure surface of being exerted pressure with respect to by public connecting tube 630.
Second cylinder 410 can comprise: along with the moving direction quadrature of second blade 440 or the first passage 414 that forms of the direction that intersects at a certain angle, so that the inside of housing 100 can be communicated with second blade groove 411; With the second channel 415 that is arranged on the opposite side of first passage 414 based on second blade groove 411, make second blade groove 411 be communicated with second suction bole 412, between first passage 414 and second channel 415, produce pressure difference thus, thereby promptly limit second blade 440.First passage 414 can be arranged on the same line with second channel 415 and have identical sectional area.
As shown in Figure 2, valve cell 500 can comprise: the main valve portion 510 that is connected in the vane room 412 of second cylinder 410; With the sub-valve portion 520 that is connected in main valve 510, sub-valve portion 520 opening and closing operations in order to control main valve portion 510.
As shown in Figure 2, linkage unit 600 can comprise: low voltage side connecting tube 610, and low voltage side connecting tube 610 comes out to be connected in main valve portion 510 from the second exhaust tube SP2 branch; The inner space 101 of housing 100 is connected in the high pressure side connecting tube 620 of main valve portion 510; And public connecting tube 630, public connecting tube 630 is connected in the vane room 413 of second cylinder 410 and is connected in main valve portion 510, so that vane room 413 can optionally be communicated with low voltage side connecting tube 610 or high pressure side connecting tube 620.
Here, as shown in Figure 4, in high pressure side connecting tube 620, a side that is connected in housing 100 is preferably placed between the upper end of first cylinder 310 of the lower end of motor part 200 (being E.L.) and first press part 300, so that be connected to housing 100 at high part place, surface (being O.L.), thereby avoid oil to flow in the vane room 412 than oil.And the surface of oil refers to the surface of the oil under the idle state of compressor.
On the other hand, although not shown in the drawings, the unlimited downwards mesh formula of an end also can be set in the ingress of high pressure side connecting tube 620 keep off oily member or oil baffle, so that avoid oil to flow in the high pressure side connecting tube 620 effectively.Perhaps, high pressure side connecting tube 620 can be connected to housing 100 in the mode that is tilted to respect to the joint with housing 100, therefore the oil that flows in the high pressure side connecting tube 620 can be incorporated in the housing 100, thereby avoids oil to flow in the high pressure side connecting tube 620 effectively.
Reference character 110 refers to accumulator.
Work effect according to variable capacity type rotary compressor of the present invention will be described now.
When the stator 210 to motor part 200 applies power so that during rotor 220 rotation, running shaft 230 rotates with the rotating force with motor part 200 with rotor 220 and is delivered to first press part 300 and second press part 400.Therefore, the capacity required according to air-conditioning, first press part 300 and second press part 400 are all worked under dynamic mode to produce big refrigeration capacity, first press part 300 is worked under dynamic mode and second press part 400 is worked under energy saver mode to produce little refrigeration capacity.
Here, as shown in Figure 5, when compressor was worked under dynamic mode, the refrigeration agent of the high pressure in the housing 100 was inhaled in the vane room 413 via high pressure side connecting tube 620 by main valve portion 510 and sub-valve portion 520.The refrigeration agent that is inhaled into the high pressure in the vane room 413 supports second blade 440.Therefore, first press part 300 and second press part 400 can both proper functioning with compressed refrigerant.
On the other hand, as shown in Figure 6, when compressor was worked under energy saver mode, the refrigeration agent that is drawn into the low pressure in second cylinder 410 via sucking pipe SP2 was introduced in the vane room 413 via low voltage side connecting tube 610 by main valve portion 510 and sub-valve portion 520.Therefore, the refrigeration agent that is introduced in the low pressure in the vane room 413 supports the rear surface of second blade 440, and the compressive force of the second compression volume V2 is applied to the front surface of second blade 440 in addition, makes second blade 440 to separate with second rotary plunger 430.In addition, be applied to difference between each pressure of two side surfaces of second blade 440 owing to the first passage 414 and the second channel 415 that are located at second cylinder, 410 places increase, thereby limit second blade 440 effectively rapidly.For example, as shown in Figure 6, when the oil of high pressure or refrigeration agent were introduced in the first passage 414, the refrigeration agent with discharge pressure Pd or the oil that partly are retained in the vane room 413 leaked in second suction bole 412 apace via gap between second blade 440 and the compressing tablet groove 411 and second channel 415.Therefore, when the mode of operation of compressor changes, can rapider and stably limit second blade 440.Therefore, can be only in first press part 300 and in second press part 400, normally do not carry out compression.
Here, as shown in Figure 4, high pressure side connecting tube 620 is connected to housing 100 at the high part place, surface (being O.L.) than oil, and this can prevent that oil is incorporated in the vane room 412 when compressor is worked under dynamic mode.Therefore, refrigeration agent is contained in the vane room 413 and oil-containing not therein almost, makes the internal pressure of vane room 413 change rapidly, thereby can promptly change the mode of operation of compressor.In addition, the pressure of vane room 413 can remain in hyperbaric environment or the environment under low pressure consistently, can avoid the fluctuation of second blade 440 thus, thereby reduces the noise of compressor effectively.
Pattern of the present invention
Above-mentioned first mode of execution is embodied as makes the pressure be applied to the second blade rear side change, so that second blade can separate with the contact of second rotary plunger or with it, thereby can change the mode of operation of compressor.On the other hand, above-mentioned second mode of execution is embodied as makes the pressure be applied to the second blade front side change, so that second blade can separate with the contact of second rotary plunger or with it, thereby can change the mode of operation of compressor.
For this reason, as Fig. 2 and shown in Figure 7, the low voltage side of main valve portion 510 inlet and second sucking pipe interconnect via low voltage side connecting tube 610.The high pressure side inlet of main valve portion 510 and the inner space 101 of housing 100 interconnect via high pressure side connecting tube 620.Second suction bole 412 of the public outlet of main valve portion 510 and second cylinder 410 interconnects via public connecting tube 630.Be located at the outside that the vane room 413 that is not communicated with inner space 101 in the inner space 101 of housing 100 is arranged on second blade groove 411.Vane room 413 can be connected to the second public connecting tube 640, makes it possible to optionally swabbing pressure Ps or discharge pressure Pd are provided in the blade groove 411.In this case, main valve portion 510 can be embodied as four-way valve, makes low voltage side connecting tube 610, high pressure side connecting tube 620, public connecting tube 630 (being called the first public connecting tube in the present embodiment) and the second public connecting tube 640 can both be connected to main valve portion 510.For example, main valve portion 510 can be configured such that when the first public connecting tube 630 is connected to high pressure side connecting tube 620, the second public connecting tube 640 is connected to low voltage side connecting tube 610, and when the first public connecting tube 630 was connected to low voltage side connecting tube 610, the second public connecting tube 640 was connected to high pressure side connecting tube 620.
In addition, although not shown in the drawings, main valve portion 510 can be embodied as the three-way valve as shown in first mode of execution, and the back pressure converting unit can be set in vane room 413 individually.
In addition, although not shown in the drawings, vane room 413 can have the magnet that is used to limit second blade.
Even if in second mode of execution similar to first mode of execution, second cylinder 410 also can comprise second blade groove 411, second suction bole 412 and the first passage 414 and the second channel 415 that are positioned at second blade groove, 411 both sides.Other parts that are used for the required parts of the work of compressor and first mode of execution are same or similar, therefore will omit its detailed description.
Variable capacity type rotary compressor according to second mode of execution will be worked in the following manner.
In the power operation mode of compressor, low voltage side connecting tube 610 is connected to the first public connecting tube 630 by main valve portion 510, can be incorporated among the second compression volume V2 of second cylinder 410 so that have the refrigeration agent of swabbing pressure Ps.In addition, high pressure side connecting tube 620 is connected to the second public connecting tube 640 by main valve portion 510, can be incorporated in the vane room 413 so that have the refrigeration agent of discharge pressure Pd.Therefore, second blade 440 is pressurized and supported under discharge pressure Pd effect, to keep in touch with second rotary plunger 430.The refrigeration agent that is incorporated among the compression volume V2 of second cylinder 410 is discharged from then by second rotary plunger 430 and 440 compressions of second blade, and these operations are carried out repeatedly.
On the other hand, in the energy conservation pattern of compressor, high pressure side connecting tube 620 is connected to the first public connecting tube 630 by main valve portion 510, can be incorporated among the second compression volume V2 of second cylinder 410 so that have the refrigeration agent of discharge pressure Pd.In addition, low voltage side connecting tube 610 is connected to the second public connecting tube 640 by main valve portion 510, can be incorporated in the vane room 413 so that have the refrigeration agent of swabbing pressure Ps.Therefore, second blade 440 under the pressure effect of the second compression volume V2 pressurized to separate with second rotary plunger 430.As a result, suction chamber and the pressing chamber of the second compression volume V2 are interconnected, thereby second press part 400 is not worked.Here, the refrigeration agent with discharge pressure Pd is introduced in the second channel of being located between second suction bole 412 and second blade groove 411 415 from second suction bole 412.Refrigeration agent with discharge pressure Pd flows through first passage 414 then rapidly.In this process, be pressed towards first passage 414 under the action of pressure of second blade 440 on putting on two side surface being limited in second blade groove 411, thereby make second press part 400 can remain on work under the energy saver mode.
In this external second mode of execution, high pressure side connecting tube 620 is connected in the middle part of housing 100, say so in more detail between higher than the surface (being O.L.) of oil, upper end, make it possible to avoid in advance the oil in the housing 100 to flow in second cylinder 410 at first cylinder 310 of the lower end of motor part 200 and first press part 300.In addition, as shown in first mode of execution, high pressure side connecting tube 620 can have the retaining oil member that is used to keep off oil outside the inlet of high pressure side connecting tube 620, perhaps may be embodied as to make the height of high pressure side connecting tube 620 along with far away more and high more from the part that is connected to housing 100.
On the other hand, in first mode of execution and second mode of execution, high pressure side connecting tube 620 can be configured to be communicated with, as shown in Figure 8 with inner space 101 at the housing 100 of motor part 200 upsides.In addition, high pressure side connecting tube 620 can be configured to be connected in the middle part of discharge pipe DP, as shown in Figure 9.Equally in this case, can reduce in the front surface or rear surface that oil is incorporated into second blade 440, this makes the front surface of second blade 440 or the rapid change in pressure of rear surface.Therefore, can successfully change the pattern of compressor.In addition, the front surface of second blade 440 and the pressure of rear surface can keep constant, to avoid causing noise to increase owing to the fluctuation of second blade 440.
This structure can be applicable to first press part 300 equally.

Claims (25)

1. variable capacity type rotary compressor comprises:
Housing, described housing have and are used for oil is contained in wherein inner space, and described inner space is connected in discharge pipe;
Drive motor, described drive motor are arranged in the inner space of described housing and produce driving force;
At least one cylinder assembly, described at least one cylinder assembly is arranged in the inner space of described housing, and has the compression volume that is used for compressed refrigerant;
At least one rotary plunger of moving in the compression volume of described cylinder assembly;
Be coupled at least one blade of described cylinder assembly, described at least one blade separates with described rotary plunger or contacts so that described compression volume is divided into suction chamber and pressing chamber; And
At least one connecting tube, described at least one connecting tube make the inner space of described housing can be connected to described cylinder assembly, so that the internal pressure of described housing can be applied to described blade,
Wherein, described connecting tube is coupled to described housing, makes the end of described connecting tube to be connected to described housing in the surperficial high position than the oil in the inner space that is contained in described housing.
2. rotary compressor as claimed in claim 1, wherein, the surface of described oil is illustrated in the surface of oil under the idle state of described compressor.
3. rotary compressor as claimed in claim 1, wherein, described connecting tube is connected in described housing, makes the internal pressure of described housing be applied to the blade rear surface that does not contact with described rotary plunger.
4. rotary compressor as claimed in claim 3, wherein, described cylinder assembly is configured to comprise vane room, described vane room is arranged in the inner space of described housing and is not communicated with described inner space and towards the rear surface of described blade, and described vane room is connected in described connecting tube.
5. rotary compressor as claimed in claim 3, wherein, described cylinder assembly is configured to comprise blade groove and at least one first passage, and described blade is inserted in the described blade groove, and described at least one first passage makes described blade groove be communicated with the inner space of described housing.
6. rotary compressor as claimed in claim 5, wherein, described cylinder assembly is configured to comprise suction bole and at least one second channel, and refrigeration agent is inhaled in the described compression volume by described suction bole, and described at least one second channel makes described suction bole be communicated with described blade groove.
7. rotary compressor as claimed in claim 6, wherein, described first passage and second channel are arranged on the same line.
8. rotary compressor as claimed in claim 7, wherein, at least one is configured to and described blade groove quadrature in described first passage and the second channel.
9. rotary compressor as claimed in claim 3 wherein, is provided with the valve that is used for optionally opening and/or cutting out described connecting tube in the center of described connecting tube.
10. rotary compressor as claimed in claim 9, wherein, described connecting tube comprises:
Make described pumping tube be connected to the low voltage side connecting tube of described valve;
Make the inner space of described housing be connected to the high pressure side connecting tube of described valve; And
Public connecting tube, described public connecting tube optionally is connected to described low voltage side connecting tube or high pressure side connecting tube by described valve, and make described valve be connected to described blade rear space so that swabbing pressure or discharge pressure can be applied on the rear surface of described blade.
11. rotary compressor as claimed in claim 10, wherein, described high pressure side connecting tube is configured to comprise that the mesh formula keeps off oily member.
12. rotary compressor as claimed in claim 10, wherein, described high pressure side connecting tube is inclined to along with far away more and high more apart from the part that is connected to described housing.
13. rotary compressor as claimed in claim 1, wherein, described connecting tube is connected to described housing, makes the internal pressure of described housing can be applied to the front surface of the blade that contacts with described rotary plunger.
14. rotary compressor as claimed in claim 13, wherein, described cylinder assembly is configured to comprise the suction bole in order to described compression volume guiding refrigeration agent, and described suction bole is connected to described connecting tube.
15. rotary compressor as claimed in claim 13, wherein, described cylinder assembly is configured to comprise blade groove and at least one first passage, described blade is inserted in the described blade groove, described at least one first passage is arranged on a side of described blade groove to be communicated with described blade groove, so that swabbing pressure is applied on the described blade.
16. rotary compressor as claimed in claim 15, wherein, described cylinder assembly is configured to comprise suction bole and at least one second channel, and described suction bole makes refrigeration agent be inhaled in the described compression volume, and described at least one second channel makes described suction bole be connected to described blade groove.
17. rotary compressor as claimed in claim 16, wherein, described first passage and second channel are arranged on the same line.
18. rotary compressor as claimed in claim 16, wherein, at least one is configured to and described blade groove quadrature in described first passage and the second channel.
19. rotary compressor as claimed in claim 13 wherein, is provided with the valve that is used for optionally opening and/or cutting out described connecting tube in the center of described connecting tube.
20. rotary compressor as claimed in claim 19, wherein, described connecting tube comprises:
Make described pumping tube be connected to the low voltage side connecting tube of described valve;
Make the inner space of described housing be connected to the high pressure side connecting tube of described valve;
The first public connecting tube, the described first public connecting tube optionally is connected to described low voltage side connecting tube or high pressure side connecting tube by described valve, and makes described valve be connected to described suction bole so that swabbing pressure or discharge pressure can be applied to the suction bole of described cylinder assembly; And
The second public connecting tube relative with the described first public connecting tube, the described second public connecting tube is selectively connected thereto described low voltage side connecting tube or high pressure side connecting tube by described valve, makes swabbing pressure or discharge pressure can be applied to the rear surface of described blade.
21. rotary compressor as claimed in claim 20, wherein, described high pressure side connecting tube is configured to comprise that the mesh formula keeps off oily member.
22. rotary compressor as claimed in claim 20, wherein, described high pressure side connecting tube is inclined to along with far away more and high more apart from the part that is connected to described housing.
23. as each described rotary compressor in claim 1 or 22, wherein, described connecting tube is connected in described housing with between described drive motor and described cylinder assembly.
24. as each described rotary compressor in claim 1 or 22, wherein, the upside of the drive motor of described housing is connected with discharge pipe, and described connecting tube is connected in described housing with between described drive motor and described discharge pipe.
25. as each described rotary compressor in claim 1 or 22, wherein, the upside of the drive motor of described housing is connected with discharge pipe, and described connecting tube is connected in described discharge pipe.
CN2007800315512A 2006-08-25 2007-08-24 Variable capacity type rotary compressor Expired - Fee Related CN101506527B (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
KR10-2006-0081322 2006-08-25
KR1020060081322A KR20080018735A (en) 2006-08-25 2006-08-25 Modulation type rotary compressor
KR1020060081322 2006-08-25
KR1020060114770 2006-11-20
KR10-2006-0114770 2006-11-20
KR1020060114770A KR100795958B1 (en) 2006-11-20 2006-11-20 Modulation type rotary compressor
PCT/KR2007/004090 WO2008023962A1 (en) 2006-08-25 2007-08-24 Variable capacity type rotary compressor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103075344A (en) * 2011-10-25 2013-05-01 珠海格力节能环保制冷技术研究中心有限公司 Variable-capacity two-stage enthalpy-increase compressor and air-conditioning system
CN103161730A (en) * 2011-12-09 2013-06-19 东芝开利株式会社 Multi-cylinder rotary compressor and refrigeration cycle device

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Publication number Priority date Publication date Assignee Title
KR101504202B1 (en) * 2008-07-22 2015-03-19 엘지전자 주식회사 Compressor and air conditioner comprising the compressor therein
EP2317147B1 (en) 2008-07-22 2017-05-03 LG Electronics Inc. Compressor and air-conditioner having the same
KR101540661B1 (en) * 2008-07-22 2015-07-31 엘지전자 주식회사 Compressor and air conditioner comprising the compressor therein

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103075344A (en) * 2011-10-25 2013-05-01 珠海格力节能环保制冷技术研究中心有限公司 Variable-capacity two-stage enthalpy-increase compressor and air-conditioning system
CN103075344B (en) * 2011-10-25 2015-07-22 珠海格力节能环保制冷技术研究中心有限公司 Variable-capacity two-stage enthalpy-increase compressor and air-conditioning system
CN103161730A (en) * 2011-12-09 2013-06-19 东芝开利株式会社 Multi-cylinder rotary compressor and refrigeration cycle device
CN103161730B (en) * 2011-12-09 2015-09-09 东芝开利株式会社 Multi-cylindrical rotary compressor and refrigerating circulatory device

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