CN101506527B - Variable capacity type rotary compressor - Google Patents

Variable capacity type rotary compressor Download PDF

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Publication number
CN101506527B
CN101506527B CN2007800315512A CN200780031551A CN101506527B CN 101506527 B CN101506527 B CN 101506527B CN 2007800315512 A CN2007800315512 A CN 2007800315512A CN 200780031551 A CN200780031551 A CN 200780031551A CN 101506527 B CN101506527 B CN 101506527B
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CN
China
Prior art keywords
connecting tube
housing
blade
side connecting
inner space
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Expired - Fee Related
Application number
CN2007800315512A
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Chinese (zh)
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CN101506527A (en
Inventor
赵承衍
卞想明
韩定旻
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LG Electronics Inc
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LG Electronics Inc
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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

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.Known have several kinds of technology to be used to change the capacity of 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 of inverter motor is high.In addition, under the state of cooling, strengthen refrigerating capacity than under heated condition, strengthening more difficulty of refrigerating capacity.
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 to make and to be applied to that the refrigerant pressure on surface changes with restriction/release blade behind the blade.Yet,,, should carry out the conversion of the pressure that puts on blade front surface or surface, back 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 surface, back of blade, the viscosity of oil may make the conversion rate of the pressure of blade front surface or surface, back reduce so.In addition, produce floating pressure immediately in the front surface side of blade or back surface side, 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 existing technology; The purpose of this invention is to provide a kind of like this variable capacity type rotary compressor, in this rotary compressor, flow in the front surface or surface, back of blade through preventing excessive oil; Make the surperficial pressure of front surface or back that puts on blade promptly to transform, thereby can realize the reduction of buffeting of vane noise.
In order to realize the object of the invention, a kind of variable capacity type rotary compressor is provided, this rotary compressor comprises: housing, said housing have and are used for oil is contained in inner space wherein; Drive motor, said drive motor are arranged in the inner space of said housing and produce driving force; Cylinder assembly, said cylinder assembly is arranged in the inner space of said housing, and has the compression volume that is used for compressed refrigerant; In the compression volume of said cylinder assembly around at least one moving rotary plunger; Be coupled at least one blade of said cylinder assembly, said at least one blade separates with said rotary plunger or contacts so that said compression volume is divided into suction chamber and pressing chamber; And at least one connecting tube; Said at least one connecting tube makes the inner space of said housing can be connected to said cylinder assembly; So that the internal pressure of said housing can be applied to said blade; Wherein, said connecting tube is coupled to said housing, makes the surperficial high position of the oil that the end of said connecting tube can hold in than the inner space at said housing be connected to said 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 the surface height than oil, thereby prevents that oil from flowing in the front surface or surface, back of blade.Therefore, the pressure on the front surface of blade or surface, back changes can change the mode of operation of compressor rapidly fast.In addition, can keep the pressure on blade front surface or surface, back 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 line I-I intercepting 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, will be described in detail variable capacity type rotary compressor with reference to accompanying drawing preferred implementation according to the present invention.
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, said press part 300 and 400 comes compressed refrigerant in order to the rotating force that produces through motor part 200; Valve cell 500, valve cell 500 is converted into hyperbaric environment or environment under low pressure with the back 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 the rotor 220 in the stator 210 with certain air clearance, rotor 220 and stator 210 collaborative rotations; 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 be coupled to respectively first cylinder 310 upside and downside upper support plate 320 (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, with through in the first compression volume V1 of first cylinder 310, coming compressed refrigerant around moving (pivot); 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 with 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 with 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 let 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 be coupled to the upside of second cylinder 410 and the intermediate support 330 and lower support 420 of downside 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, with through in the second compression volume V2 of second cylinder 410, coming compressed refrigerant around moving (pivot); 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 with 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 with 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 let 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 let 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 at axial direction and tilts, 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 to the rear side of second blade 440 swabbing pressure Ps or discharging fluid power Pd is provided.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 back surface of second blade 440 also can form the pressure surface of being exerted pressure with respect to through public connecting tube 630.
Second cylinder 410 can comprise: the first passage 414 that edge and the moving direction quadrature of second blade 440 or the direction that intersects at a certain angle form, 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 the high part place, surface (being O.L.) than oil, thereby avoids oil to flow in the vane room 412.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, also can be in the high pressure side ingress of connecting tube 620 the mesh formula that an end opens wide downwards be set keep off oily member or oil baffle so that avoid oil to flow in the high pressure side connecting tube 620 effectively.Perhaps; Can high pressure side connecting tube 620 be connected to housing 100 with 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 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; Can make first press part 300 and second press part 400 all under dynamic mode work first press part 300 is worked under dynamic mode and second press part 400 is worked to produce little refrigeration capacity under energy saver mode to produce big 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 through 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 through 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 back 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 first passage that is located at second cylinder, 410 places 414 and second channel 415 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 via gap between second blade 440 and the compressing tablet groove 411 and second channel 415 apace.Therefore, when the mode of operation of compressor changes, can be more rapidly 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, like 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 (in this mode of execution, being called the first public connecting tube) and the second public connecting tube 640 can both be connected to main valve portion 510.For example; Can main valve portion 510 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 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 with 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 through 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 through 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 by second rotary plunger 430 and 440 compressions of second blade then, 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 through 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 through 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 that has a 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 its two side surfaces 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; 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 more far and more high from the part that is connected to housing 100.
On the other hand, in first mode of execution and second mode of execution, can high pressure side connecting tube 620 be configured to be communicated with inner space 101 at the housing 100 of motor part 200 upsides, as shown in Figure 8.In addition, high pressure side connecting tube 620 can be configured to be connected in the middle part of discharge pipe DP, and is as shown in Figure 9.Equally in this case, can reduce in the front surface or surface, back that oil is incorporated into second blade 440, this makes the front surface of second blade 440 or the rapid change in pressure on back surface.Therefore, can successfully change the pattern of compressor.In addition, the front surface of second blade 440 can keep constant with the pressure on surface, back, 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 (14)

1. variable capacity type rotary compressor comprises:
Housing, said housing have and are used for oil is contained in inner space wherein, and said inner space is connected in discharge pipe;
Drive motor, said drive motor are arranged in the inner space of said housing and produce driving force;
At least one cylinder assembly; Said at least one cylinder assembly is arranged in the inner space of said housing; And have compression volume, blade groove, suction bole, vane room, at least one first passage and at least one second channel; Said compression volume is used for compressed refrigerant, and refrigeration agent is inhaled in the said compression volume through said suction bole, and said vane room is arranged in the inner space of said housing and is not communicated with said inner space; Said at least one first passage makes said blade groove be communicated with the inner space of said housing, and said at least one second channel makes said suction bole be communicated with said blade groove;
In the compression volume of said cylinder assembly around at least one moving rotary plunger;
Be coupled at least one blade of said cylinder assembly; Said at least one blade separates with said rotary plunger or contacts so that said compression volume is divided into suction chamber and pressing chamber; And said at least one blade is inserted in the said blade groove, and said vane room is towards the back surface that does not contact with said rotary plunger of said at least one blade;
Be connected to the low voltage side connecting tube of exhaust tube;
Be connected to the high pressure side connecting tube of the inner space of said housing;
Be connected to the public connecting tube of said vane room; And
Valve, said valve is arranged on the center of said connecting tube, through said valve said public connecting tube optionally is connected to said low voltage side connecting tube or high pressure side connecting tube, makes swabbing pressure or discharge pressure can be applied on the back surface of said blade,
Wherein, said high pressure side connecting tube is coupled to said housing, makes the end of said high pressure side connecting tube to be connected to said housing in the surperficial high position than the oil in the inner space that is contained in said housing.
2. rotary compressor as claimed in claim 1, wherein, the face of said oil is shown in the surface of oil under the idle state of said compressor.
3. rotary compressor as claimed in claim 1, wherein, said first passage and second channel are arranged on the same line.
4. rotary compressor as claimed in claim 3, wherein, at least one is configured to and said blade groove quadrature in said first passage and the second channel.
5. rotary compressor as claimed in claim 1, wherein, said high pressure side connecting tube is configured to comprise that the mesh formula keeps off oily member.
6. rotary compressor as claimed in claim 1, wherein, said high pressure side connecting tube is inclined to along with more far and more high apart from the part that is connected to said housing.
7. variable capacity type rotary compressor comprises:
Housing, said housing have and are used for oil is contained in inner space wherein, and said inner space is connected in discharge pipe;
Drive motor, said drive motor are arranged in the inner space of said housing and produce driving force;
At least one cylinder assembly; Said at least one cylinder assembly is arranged in the inner space of said housing; And have compression volume, blade groove, suction bole, vane room, at least one first passage and at least one second channel; Said compression volume is used for compressed refrigerant, and refrigeration agent is inhaled in the said compression volume through said suction bole, and said vane room is arranged in the inner space of said housing and is not communicated with said inner space; Said at least one first passage makes said blade groove be communicated with the inner space of said housing, and said at least one second channel makes said suction bole be communicated with said blade groove;
In the compression volume of said cylinder assembly around at least one moving rotary plunger;
Be coupled at least one blade of said cylinder assembly; Said at least one blade separates with said rotary plunger or contacts so that said compression volume is divided into suction chamber and pressing chamber; And said at least one blade is inserted in the said blade groove, and said vane room is towards the back surface that does not contact with said rotary plunger of said at least one blade; And
Be connected to the low voltage side connecting tube of exhaust tube;
Be connected to the high pressure side connecting tube of the inner space of said housing;
Be connected to the first public connecting tube of said suction bole;
Be connected to the second public connecting tube of said vane room; And
Valve; Said valve is arranged on the center of said connecting tube; The said first public connecting tube and the second public connecting tube optionally are connected to said low voltage side connecting tube or high pressure side connecting tube through said valve; Make swabbing pressure or discharge pressure can be applied on the back surface of said suction bole or said blade
Said high pressure side connecting tube is coupled to said housing, makes the end of said high pressure side connecting tube to be connected to said housing in the surperficial high position than the oil in the inner space that is contained in said housing.
8. rotary compressor as claimed in claim 7, wherein, said first passage and second channel are arranged on the same line.
9. rotary compressor as claimed in claim 7, wherein, at least one is configured to and said blade groove quadrature in said first passage and the second channel.
10. rotary compressor as claimed in claim 7, wherein, said high pressure side connecting tube is configured to comprise that the mesh formula keeps off oily member.
11. rotary compressor as claimed in claim 7, wherein, said high pressure side connecting tube is inclined to along with more far and more high apart from the part that is connected to said housing.
12. like each described rotary compressor in the claim 1 to 11, wherein, said high pressure side connecting tube is connected in said housing with between said drive motor and said cylinder assembly.
13. like each described rotary compressor in the claim 1 to 11, wherein, the upside of the drive motor of said housing is connected with discharge pipe, and said high pressure side connecting tube is connected in said housing with between said drive motor and said discharge pipe.
14. like each described rotary compressor in the claim 1 to 11, wherein, the upside of the drive motor of said housing is connected with discharge pipe, and said high pressure side connecting tube is connected in said 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
KR1020060081322 2006-08-25
KR1020060081322A KR20080018735A (en) 2006-08-25 2006-08-25 Modulation type rotary compressor
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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CN101506527A CN101506527A (en) 2009-08-12
CN101506527B true CN101506527B (en) 2012-07-04

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Publication number Priority date Publication date Assignee Title
KR101540661B1 (en) * 2008-07-22 2015-07-31 엘지전자 주식회사 Compressor and air conditioner comprising the compressor therein
WO2010011081A1 (en) 2008-07-22 2010-01-28 (주)엘지전자 Compressor and air-conditioner having the same
KR101504202B1 (en) * 2008-07-22 2015-03-19 엘지전자 주식회사 Compressor and air conditioner comprising the compressor therein
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
JP6071190B2 (en) * 2011-12-09 2017-02-01 東芝キヤリア株式会社 Multi-cylinder rotary compressor and refrigeration cycle apparatus

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