CN110312868A - Compressor - Google Patents

Compressor Download PDF

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Publication number
CN110312868A
CN110312868A CN201880010417.2A CN201880010417A CN110312868A CN 110312868 A CN110312868 A CN 110312868A CN 201880010417 A CN201880010417 A CN 201880010417A CN 110312868 A CN110312868 A CN 110312868A
Authority
CN
China
Prior art keywords
lubricating oil
oil
capture element
compressor
reservoir
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.)
Withdrawn
Application number
CN201880010417.2A
Other languages
Chinese (zh)
Inventor
小和田芳夫
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.)
Sanden Corp
Original Assignee
Sanden Holdings Corp
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 Sanden Holdings Corp filed Critical Sanden Holdings Corp
Publication of CN110312868A publication Critical patent/CN110312868A/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02Lubrication; Lubricant separation
    • F04C29/026Lubricant separation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02Rotary-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
    • F04C18/0207Rotary-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
    • F04C18/0215Rotary-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02Lubrication
    • F04B39/0284Constructional details, e.g. reservoirs in the casing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/04Measures to avoid lubricant contaminating the pumped fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/16Filtration; Moisture separation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0092Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10Adaptations or arrangements of distribution members
    • F04B39/102Adaptations or arrangements of distribution members the members being disc valves
    • F04B39/1033Adaptations or arrangements of distribution members the members being disc valves annular disc valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/005Removing contaminants, deposits or scale from the pump; Cleaning
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/30Casings or housings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/80Other components
    • F04C2240/804Accumulators for refrigerant circuits

Abstract

Inhibit by the control caused by pollutant is bad and insufficient lubrication.Oil eliminator included by compressor (230) has separation unit and reservoir, above-mentioned separation unit is separated lubricating oil (OIL) with working fluid using centrifugal force, above-mentioned reservoir is located at the lower section of separation unit, and the lubricating oil (OIL) separated out by separate section is stored.Then, the capture element (260) of hat-shaped is equipped between separation unit and reservoir, above-mentioned capture element (260) temporarily stores the lubricating oil (OIL) separated out by separate section, and the supernatant of lubricating oil (OIL) is expelled to reservoir, to make the pollutant (CON) for being mixed into lubricating oil (OIL) precipitating to capture the pollutant (CON).

Description

Compressor
Technical field
The present invention relates to the compressors that the working fluids such as a kind of pair of refrigerant are compressed.
Background technique
Within the compressor, if the mist of oil of lubricating oil is mixed by the refrigerant (gas refrigeration of the compressed gas of compression mechanism Agent) in, then the mist of oil may be imported into condenser of refrigerant circuit etc. and reduce the efficiency of compressor.Therefore, it compresses Machine includes oil eliminator, and above-mentioned oil eliminator separates lubricating oil with the gas refrigerant being discharged from compression mechanism.Utilize oil The lubricating oil isolated from device is for example for generating the back pressure that swirling scroll is pressed on to static vortex disk in scroll compressor.For Above-mentioned back pressure is adjusted, the Back pressure control valve that is acted using the pressure difference according to suction pressure and discharge pressure.
However, the pollutant (foreign matter) such as being mixed into sediment (Japanese: ス ラ ッ ジ) in the lubricating oil of compressor.If dirty Dye object is imported into Back pressure control valve, then swimmingly moves such as the spool of Back pressure control valve, thus can not be suitably right Back pressure is adjusted.Therefore, as Japanese Patent Laid-Open 2003-343433 bulletin (patent document 1) record as, by Back pressure control valve installs filter to capture pollutant, to inhibit the undesirable generation of work.
Existing technical literature
Patent document
Patent document 1: Japanese Patent Laid-Open 2003-343433 bulletin
Summary of the invention
The technical problems to be solved by the invention
However, since the capture area of the pollutant of the filter of Back pressure control valve is small, if compression is used for a long time Machine, then the entire surface of filter can be contaminated object covering and flow lubricating oil can not, it may occur that the control of such as back pressure Bad, sliding position insufficient lubrication etc..In addition, being not only Back pressure control valve, it is disposed in the throttle orifice etc. of lubricating oil flow path The unfavorable condition as caused by the pollutant being mixed into lubricating oil may occur.
Therefore, the purpose of the present invention is to provide a kind of compressors, and the control caused by being able to suppress by pollutant is bad And insufficient lubrication etc..
Technical scheme applied to solve the technical problem
For this purpose, compressor includes oil eliminator, above-mentioned oil eliminator has separation unit, and above-mentioned separation unit will using centrifugal force Lubricating oil is separated with working fluid;And reservoir, above-mentioned reservoir are located at the lower section of separation unit, and will by separate section from Lubricating oil storage out.In addition, being equipped with capture element between separation unit and reservoir, above-mentioned capture element will pass through separation The lubricating oil that part separates out temporarily is stored, and the supernatant of above-mentioned lubricating oil is expelled to reservoir.
Invention effect
In accordance with the invention it is possible to which the control caused by inhibiting by pollutant is bad and insufficient lubrication.
Detailed description of the invention
Fig. 1 is the cross-sectional view for indicating an example of scroll compressor.
Fig. 2 is the explanatory diagram of the separation method of the lubricating oil carried out by oil eliminator.
Fig. 3 is the block diagram being illustrated to the flowing of refrigerant and lubricating oil.
Fig. 4 is the longitudinal section view for indicating the first embodiment of capture element.
Fig. 5 is the longitudinal section view for indicating the major part of the variation of capture element of first embodiment.
Fig. 6 is the longitudinal section view for indicating the second embodiment of capture element.
Fig. 7 is the longitudinal section view for indicating the third embodiment of capture element.
Fig. 8 is the longitudinal section view for indicating the major part of the variation of capture element of third embodiment.
Specific embodiment
Referring to the drawings, embodiment for carrying out the present invention is described in detail.
Fig. 1 shows an examples of scroll compressor.In addition, scroll compressor is an example as compressor and enumerates.
Scroll compressor 100 includes: whirlpool disk unit 120;Shell 140, above-mentioned shell 140 have the suction of gas refrigerant Enter the room H1 and discharge room H2;Electric motor 160, above-mentioned electric motor 160 drive whirlpool disk unit 120;And inverter 180, above-mentioned inverter 180 controls electric motor 160.In addition, whirlpool disk unit 120 can also be exported by engine It is driven, to replace electric motor 160.In addition, inverter 180 can not also be assembled in scroll compressor 100.
Whirlpool disk unit 120 has intermeshing static vortex disk 122 and swirling scroll 124.Static vortex disk 122 includes: circular plate type The bottom plate 122A of shape;And the circular part 122B of the gradually open form shape (swirl shape) being provided for erecting on one side from bottom plate 122A.With Similarly, swirling scroll 124 includes: the bottom plate 124A of circular plate shape to static vortex disk 122;And it is set from the standing of the one side of bottom plate 124A The circular part 124B for the gradually open form shape set.
Static vortex disk 122 and swirling scroll 124 are configured to make their circular part 122B, 124B to engage.Specifically, it configures At a face contact of the bottom plate 124A of the front end and swirling scroll 124 of the circular part 122B of static vortex disk 122, swirling scroll 124 Circular part 124B front end and static vortex disk 122 bottom plate 122A a face contact.In addition, around part 122B, 124B Front end is equipped with apex seal (not shown).
In addition, static vortex disk 122 and swirling scroll 124 are configured to: in the circumferential angle phase of their circular part 122B, 124B Mutually be staggered in the state of, the side wall of described circular part 122B, 124B mutually partially in contact with.Therefore, surrounding in static vortex disk 122 The half moon-shaped confined air functioned as discharge chambe H3 is formed between part 122B and the circular part 124B of swirling scroll 124 Between.
Swirling scroll 124 is configured in the state that its rotation is prevented, can be around determining whirlpool via aftermentioned crank mechanism 240 It revolves in the axle center of disk 122.Therefore, whirlpool disk unit 120 makes by the circular part 122B of static vortex disk 122 and surrounding for swirling scroll 124 The discharge chambe H3 that part 124B zoning goes out is mobile towards central portion, so that the volume of discharge chambe H3 is gradually reduced.As a result, whirlpool disk list 120 pairs of member are compressed from the gas refrigerant around the outer end of part 122B, 124B sucking discharge chambe H3.
Shell 140 includes front housing 142, and above-mentioned front housing 142 accommodates electric motor 160 and inverter 180;It is intermediate Shell 144, above-mentioned middle case 144 accommodate whirlpool disk unit 120;Rear shell 146;And inverter cover 148.In addition, front housing 142, middle case 144, rear shell 146 and inverter cover 148 for example pass through the one (not shown) of the fastener including bolt and washer Ground fastening, to constitute the shell 140 of scroll compressor 100.
The peripheral wall portion 142A and divider wall parts 142B that front housing 142 has a substantially cylindrical shape.The inner space quilt of front housing 142 Divider wall parts 142B is separated into space for being accommodated to electric motor 160 and for being accommodated to inverter 180 Space.The opening of the one end of peripheral wall portion 142A is blocked by inverter cover 148.In addition, the another side of peripheral wall portion 142A is opened Mouth is blocked by middle case 144.Divider wall parts 142B radial central portion with towards the side of the another side of peripheral wall portion 142A Formula is provided projectingly the supporting part 142B1, above-mentioned supporting part 142B1 of substantially cylindrical shape for the one end of aftermentioned drive shaft 166 Bearing is that can rotate freely.
In addition, going out gas refrigerant by the peripheral wall portion 142A and divider wall parts 142B and 144 zoning of middle case of front housing 142 Suction chamber H1.Low pressure, low temperature gas refrigerant be sucked into suction chamber H1 via the inhalation port P1 for being formed in peripheral wall portion 142A. In addition, gas refrigerant can circulate cold to carry out to electric motor 160 around electric motor 160 in suction chamber H1 But, a suction chamber H1 for being connected to the space of side of electric motor 160 with the space of its other side is formed.In suction chamber H1 In be stored with suitable lubricating oil, with the lubrication of the equal sliding position of the drive shaft 166 for being rotated by driving.Therefore, exist In suction chamber H1, gas refrigerant is as the fluid-mixing flowing mixed with lubricating oil.
Middle case 144 substantially has bottom cylindrical shape, energy in the side opening opposite with the fastening side that front housing 142 fastens The enough inside that whirlpool disk unit 120 is housed in middle case 144.Middle case 144 has the bottom wall of cylindrical portion 144A and one end side Portion 144B.Whirlpool disk unit 120 is contained in the space gone out by cylindrical portion 144A and bottom wall part 144B zoning.In cylindrical portion 144A Another side be formed with for static vortex disk 122 be fitted into fitting portion 144A1.Therefore, the opening of middle case 144 is by static vortex disk 122 Blocking.It is swelled in addition, bottom wall part 144B is formed as its radial central portion towards electric motor 160.In the grand of bottom wall part 144B The radial central portion for playing portion 144B1 is formed through hole, and above-mentioned through hole runs through for the other end of drive shaft 166.In addition, The fitting portion being fitted into for bearing 200 is formed in 120 side of whirlpool disk unit of protrusion 144B1, above-mentioned bearing 200 is by drive shaft 166 the other end bearing is that can rotate freely.
The pushing away configured with annulus shape between the bottom wall part 144B of middle case 144 and the bottom plate 124A of swirling scroll 124 Power plate 210.The peripheral part of bottom wall part 144B accepts the thrust from swirling scroll 124 via thrust plate 210.In bottom wall part 144B And bottom plate 124A, the position that is abutted with thrust plate 210 be embedded with containment member (not shown) respectively.
In addition, between the side end face and bottom wall part 144B of the electric motor 160 of bottom plate 124A, that is, in swirling scroll 124 be located between the end face of static vortex disk opposite side and middle case 144, is formed with back pressure chamber H4.Middle case 144 is formed with Refrigerant imports access L1, and above-mentioned refrigerant imports access L1 and is used for gas refrigerant (specifically, gas refrigerant and profit The fluid-mixing of lubricating oil) whirlpool disk unit 120 is directed into from suction chamber H1 circular part 122B, 124B outer end near space H5.Space H5 is connected to suction chamber H1 since refrigerant imports access L1, the pressure of space H5 and the pressure of suction chamber H1 Power (suction pressure Ps) is equal.
Rear shell 146 is anchored on the side end fitting portion 144A1 of the cylindrical portion 144A of middle case 144 by fastener.Therefore, Static vortex disk 122 is fixed in the mode that its bottom plate 122A is clamped between fitting portion 144A1 and rear shell 146.In addition, rear shell 146 Substantially there is bottom cylindrical shape in fastening side (one end) opening fastened with middle case 144, and there is cylindrical portion 146A and its The bottom wall part 146B of another side.
Gas refrigeration is gone out by the cylindrical portion 146A and bottom wall part 146B of rear shell 146 and the bottom plate 122A zoning of static vortex disk 122 The discharge room H2 of agent.It is formed with drain passageway (tap) L2 of compression refrigerant in the central portion of bottom plate 122A, it is logical in discharge Road L2 is attached to the check-valves 220 being for example made of leaf valve, and above-mentioned check-valves 220 is to from room H2 is discharged towards whirlpool disk unit 120 flowing is limited.By the compressed compression refrigerant of the discharge chambe H3 of whirlpool disk unit 120 via drain passageway L2 and only It returns valve 220 and is expelled to discharge room H2.
Rear shell 146 is configured with oil eliminator 230, and above-mentioned oil eliminator 230 is used for the gas of lubricating oil and discharge room H2 Refrigerant separation.Specifically, being formed with tool in the rear end of rear shell 146, i.e. positioned at the end with 144 opposite side of middle case There is a gas-liquid separation chamber 230A of circular cross section, above-mentioned gas-liquid separation chamber 230A is from the periphery wall of rear shell 146 towards internal stretch. To be inserted with the step with circular cross section in the mode concentric with gas-liquid separation chamber 230A in gas-liquid separation chamber 230A The inner cylinder 230B of shape.Stage portion 230A1 of the base end part of inner cylinder 230B engaging in gas-liquid separation chamber 230A, the front end of inner cylinder 230B Portion is extended to be separated by the position of specified interval with the most inboard portion of gas-liquid separation chamber 230A.Here, gas-liquid separation chamber 230A At least the space configured with inner cylinder 230B is functioned as the separation unit for separating lubricating oil with gas refrigerant, gas-liquid separation The generally cylindrical shaped space positioned at most inboard portion of room 230A, which is used as, to be located at below separation unit and will be divided by oil eliminator 230 The reservoir that the lubricating oil separated out is temporarily stored functions.
The opening of gas-liquid separation chamber 230A in rear shell 146 (not shown) to the bolt that inner cylinder 230B is pressed can be blocked up Plug.Bolt is formed with through hole, and above-mentioned through hole is through to the front end of axle portion from the end face on the head of bolt.In addition, in order to It guides the gas refrigerant after lubricating oil is isolated by oil eliminator 230 to condenser (not shown), on the head of bolt It is formed with the discharge port P2 for piping connection.In addition, gas-liquid separation chamber 230A is via the tangential direction extension along inner circumferential surface Importing port 146C and with discharge room H2 be connected to.
Therefore, by the compressed gas refrigerant of whirlpool disk unit 120 by discharge room H2, and from port 146C is imported to oil Separator 230 imports.As shown in Fig. 2, being fed to the gas refrigerant of oil eliminator 230 on one side by gas-liquid separation chamber 230A Inner peripheral surface and inner cylinder 230B outer peripheral surface formed annulus shape space in circle round, on one side flow direction lower section.At this point, gas system The centrifugal force that the mist of oil of lubricating oil contained by cryogen generates when being circled round by gas refrigerant, and it is mobile towards its foreign side.It is lubricating After the mist of oil of oil moves outward, it can be attached to the inner peripheral surface of gas-liquid separation chamber 230A, and drip to its bottom using gravity.So Afterwards, aftermentioned pressure supply passageway L3 is directed to by the lubricating oil that oil eliminator 230 is isolated.On the other hand, profit is isolated The gas refrigerant of lubricating oil enters its inner space from the front end of inner cylinder 230B, using its pressure from the head for being formed in bolt Discharge port P2 discharge.
In addition, in Fig. 1, with the stream of the gas refrigerant before the mixing for indicating lubricating oil with oblique line arrow or after separation It is dynamic, indicate the flowing with the mixed gas refrigerant of lubricating oil (fluid-mixing) with blacking arrow, with hollow arrow indicate from The flowing for the lubricating oil that gas refrigerant is isolated.
Electric motor 160 is for example made of three-phase alternating current motor, and has rotor 162 and stator core unit 164, on State the radial outside that stator core unit 164 is configured at rotor 162.In addition, the direct current from on-vehicle battery (not shown) is logical It crosses inverter 180 and is converted into alternating current, and supply to electric motor 160.
Rotor 162 is supported to rotate via drive shaft 166 in the radially inner side of stator core unit 164, above-mentioned drive Moving axis 166 is pressed into the axis hole in the radial center formation of above-mentioned rotor 162.The one end of drive shaft 166 revolvably supports In the supporting part 142B1 of front housing 142.The other end of drive shaft 166 is applied in the through hole of the formation of middle case 144, and by axis Holding 200 bearings is that can rotate.When generating magnetic field in stator core unit 164 and from the power supply of inverter 180, rotation Turn power and act on rotor 162, so that drive shaft 166 is rotated by driving.The other end side of drive shaft 166 is via crank mechanism 240 and with swirling scroll 124 link.
Crank mechanism 240 includes the shaft sleeve part 240A of substantially cylindrical shape, and above-mentioned shaft sleeve part 240A protrusion is formed in convolution The side end face back pressure chamber H4 of the bottom plate 124A of whirlpool disk 124;And eccentric bush 240C, above-mentioned eccentric bush 240C is with eccentric state It is installed on the crank 240B being arranged at the other end of drive shaft 166.Eccentric bush 240C is revolvably supported on shaft sleeve part 240A.In addition, being equipped with counterweight 240D in the other end of drive shaft 166, above-mentioned counterweight 240D overcomes convolution whirlpool Centrifugal force when disk 124 acts.Therefore, swirling scroll 124 is in the state that its rotation is suppressed, via crank mechanism 240 It can revolve around the axle center of static vortex disk 122.Here, whirlpool disk unit 120, drive shaft 166 and crank mechanism 240 are as compression mechanism An example and enumerate.
Fig. 3 is the block diagram being illustrated to the flowing of refrigerant and lubricating oil in scroll compressor 100.
As shown in figures 1 and 3, the gas refrigerant of the low pressure, low temperature of carrying out flash-pot is imported into via inhalation port P1 Then access L1 is imported via refrigerant and is guided to the space H5 near the outer end of whirlpool disk unit 120 to suction chamber H1.It connects , the gas refrigerant of space H5 is taken into the discharge chambe H3 of whirlpool disk unit 120 and is compressed.After being compressed in discharge chambe H3 Compression refrigerant via drain passageway L2 and check-valves 220 be expelled to discharge room H2, then, from discharge room H2 via inlet Mouth 146C is directed to oil eliminator 230.Gas refrigerant after isolating lubricating oil by oil eliminator 230 flows through outlet side Mouth P2, is discharged to condenser.So, it is formed in discharge chambe H3 and the gas refrigerant flowed into via suction chamber H1 is carried out The whirlpool disk unit 120 for compressing and above-mentioned compression refrigerant being discharged via discharge room H2.
Here, as shown in Figure 1, being also assembled with the back pressure control of the pressure adjusting of back pressure chamber H4 in the rear end of rear shell 146 Valve 250 processed.
Back pressure control valve 250 is well known mechanical (self-action) flow control valve, according to the sucking pressure of suction chamber H1 Power Ps and discharge room H2 discharge pressure Pd work, and so that back pressure chamber H4 back pressure Pm close to suction pressure Ps and discharge The mode of the corresponding target back pressure Pc of pressure Pd is automatically adjusted the valve opening of Back pressure control valve 250.
As shown in figures 1 and 3, scroll compressor 100 in addition to include refrigerant import access L1 and drain passageway L2 it It outside, further include pressure supply passageway L3 and discharge access L4.
Back pressure control valve 250 is configured at the midway of pressure supply passageway L3, to constitute a part of pressure supply passageway L3. Thus, the lubricating oil isolated by oil eliminator 230 utilizes Back pressure control valve 250 suitably to depressurize on one side, on one side via pressure Supply passageway L3 is supplied to back pressure chamber H4.That is, by Back pressure control valve 250 to the entrance side (upstream with back pressure chamber H4 Side) aperture of pressure supply passageway L3 of connection is adjusted, so that the flow to the lubricating oil for flowing into back pressure chamber H4 carries out Increase and decrease, to adjust back pressure Pm.
Back pressure chamber H4 is connected to by discharge access L4 with suction chamber H1.Throttle orifice OL is configured in the midway of discharge access L4. In addition, the discharge access L4 configured with throttle orifice OL is formed in a manner of through drive shaft 166, and along drive shaft 166 The mode of central axis extends.Throttle orifice OL is for example configured at the side end suction chamber H1 of drive shaft 166.The lubricating oil of back pressure chamber H4 Suction chamber H1 is back to while flow is limited by throttle orifice OL.
In addition, the back pressure Pm by back pressure chamber H4 presses swirling scroll 124 towards static vortex disk 122.The disk unit 120 in whirlpool Compressed action in, the resultant force for the back pressure Pm for acting on the side end face back pressure chamber H4 of the bottom plate 124A of swirling scroll 124 is compared to use Compression reaction force in the side end face discharge chambe H3 of bottom plate 124A is small, that is to say, that, can when state insufficient in back pressure It can generate gap between circular part 124B the front end and the bottom plate 122A of static vortex disk 122 of swirling scroll 124, and Gap is generated between the front end of the circular part 122B of the bottom plate 124A and static vortex disk 122 of swirling scroll 124, to make compressor Volume efficiency reduce.Therefore, back pressure Pm is adjusted by Back pressure control valve 250, so that resultant force is greater than compression reaction Power.
On the other hand, when the resultant force of the back pressure Pm generation by back pressure chamber H4 with compression reaction force compared with excessive height, also When being the state in back pressure surplus, since the frictional force between static vortex disk 122 and swirling scroll 124 becomes larger, compressor Mechanical efficiency reduce.Therefore, in the case where back pressure Pm is more than target back pressure Pc, Back pressure control valve 250 makes back pressure Pm reduction And close to target back pressure Pc, in order to avoid it is in back pressure surplus state.
However, the pollutant such as being mixed into sediment (foreign matter) in the lubricating oil isolated by oil eliminator 230.If Pollutant is imported into the Back pressure control valve 250 positioned at 230 downstream of oil eliminator, then may for example make Back pressure control valve 250 Spool swimmingly moves, so that target back pressure Pc can not be adjusted to the back pressure Pm of back pressure chamber H4.In addition, if pollutant quilt The throttle orifice OL for being located at 230 downstream of oil eliminator is imported, then can for example make the passage blockage of lubricating oil or narrow, be difficult to make to lubricate Oil is back to suction chamber H1 from back pressure chamber H4, so as to the back pressure Pm of back pressure chamber H4 are adjusted to target back pressure Pc.
Therefore, in oil eliminator 230, in order to make the pollutant being mixed into lubricating oil precipitating to capture the pollutant, Capture element is arranged between separation unit and reservoir, above-mentioned capture element temporarily stores the lubricating oil separated out by separate section It deposits, and the supernatant of the lubricating oil is expelled to reservoir.
Fig. 4 indicates the first embodiment of the capture element of capture pollutant.
Capture element 260, above-mentioned capture structure are equipped between the front end of inner cylinder 230B and the bottom wall of gas-liquid separation chamber 230A The partition wall of the formation hat-shaped of part 260.Capture element 260 includes: the annular portion 262 of thin plate annulus shape;Cylindrical shape Cylindrical portion 264, above-mentioned cylindrical portion 264 are erected from the inner peripheral of annular portion 262;And the plectane portion 266 of circular plate shape, above-mentioned circle Plate portion 266 blocks the front opening of cylindrical portion 264.Here, cylindrical portion 264 is one as the part erected towards separation unit Example and enumerate.
The outer peripheral edge of annular portion 262 is secured within circumferential surface on the cross section of gas-liquid separation chamber 230A.In addition, cylindrical portion 264 are formed with the multiple aperture 264A for being connected to inner peripheral surface with outer peripheral surface on its section.For example, it is contemplated that the viscosity etc. of lubricating oil The opening area of aperture 264A is suitably determined, so that lubricating oil can flow through herein.For example, it is contemplated that the quantity of the catch of lubricating oil comes suitably Determine the forming position of aperture 264A.In addition, plectane portion 266 is not limited to plane, the central portion in plectane portion 266 also can be set as upward A part, the circular cone etc. of side's spherical surface outstanding.
According to above-mentioned capture element 260, it is attached to the inner peripheral surface of gas-liquid separation chamber 230A and the lubricating oil OIL to drip is held It connects and goes out substantially in the upper surface of inner peripheral surface, annular portion 262 by gas-liquid separation chamber 230A and the outer peripheral surface zoning of cylindrical portion 264 The region of annulus shape.The lubricating oil OIL for being undertaken on above-mentioned zone flows through the aperture 264A of cylindrical portion 264, and to as storage The lower part for the gas-liquid separation chamber 230A that portion functions is discharged.At this point, lubricating oil OIL is temporarily undertaken on the area of substantially annulus shape After domain, supernatant flows through the aperture 264A of cylindrical portion 264 and is discharged to the lower part of gas-liquid separation chamber 230A, therefore, can Make the pollutant CON for being mixed into lubricating oil OIL precipitating to capture pollutant CON.
Therefore, it is imported into and becomes positioned at the Back pressure control valve 250 in 230 downstream of oil eliminator and the pollutant of throttle orifice OL etc. Few, the control caused by being able to suppress by pollutant is bad and insufficient lubrication etc., so as to improve scroll compressor 100 Durability.In addition, can not capture the micropollutants collected by oil eliminator 230 is expelled to outside together with gas refrigerant, And it is captured such as using the reception drying section of refrigerant circuit is disposed in.
The a part for dripping to the substantially lubricating oil of annulus shape may be because of the gas that circles round in the periphery of inner cylinder 230B The swirling flow of refrigerant and be rolled-up, and by from the front end of inner cylinder 230B suck.Therefore, in order to inhibit rolling for lubricating oil, As shown in figure 5, can also be on the top of capture element 260, specifically, the outer peripheral edge integration in its plectane portion 266 has is in The eaves portion 268 of thin plate circular plate shape.It so, also can be with even if a part of lubricating oil will be rolled-up because of swirling flow The lower surface of eaves portion 268 is collided and is back to below, therefore, can reduce the lubricating oil sucked from the front end of inner cylinder 230B Absolute magnitude.In addition, eaves portion 268 can also be suitable for capture element described below.
Fig. 6 indicates the second embodiment of the capture element of capture pollutant.
Capture element 270, above-mentioned capture structure are equipped between the front end of inner cylinder 230B and the bottom wall of gas-liquid separation chamber 230A The partition wall of the formation hat-shaped of part 270.Capture element 270 includes: the annular portion 272 of thin plate annulus shape, above-mentioned annular portion The central portion of 272 radial direction protrudes downward;The conus portion 274 of truncated cone shape, above-mentioned conus portion 274 is from annular portion 272 inner peripheral erects;And the plectane portion 276 of circular plate shape, above-mentioned plectane portion 276 is by the front opening of conus portion 274 Central portion protrudes upward while blocking.Here, conus portion 274 is an example as the part erected towards separation unit and arranges It lifts.
The outer peripheral edge of annular portion 272 is secured within circumferential surface on the cross section of gas-liquid separation chamber 230A.In addition, conus portion 274 are formed with the multiple aperture 274A for being connected to inner peripheral surface with outer peripheral surface on its cross section.For example, it is contemplated that the viscosity of lubricating oil Etc. the opening area that aperture 274A is suitably determined, so that lubricating oil can flow through herein.For example, it is contemplated that the quantity of the catch of lubricating oil is fitted When the forming position for determining aperture 274A.
According to above-mentioned capture element 270, be attached to the inner peripheral surface of gas-liquid separation chamber 230A and the lubricating oil OIL that drips at least It is undertaken on the upper surface of the central portion of radial direction annular portion 272 outstanding downward.It is undertaken on the lubrication oil stream of annular portion 272 The aperture 274A of conus portion 274 is crossed, and is expelled to the lower section of the gas-liquid separation chamber 230A functioned as reservoir.At this point, After being temporarily undertaken in annular portion 272, supernatant flows through the aperture 274A of conus portion 274 and divides to gas-liquid lubricating oil OIL Therefore lower part discharge from room 230A can make the pollutant CON for being mixed into lubricating oil OIL precipitating to capture the pollutant CON。
Therefore, in the same manner as first embodiment, it is imported into 250 He of Back pressure control valve positioned at 230 downstream of oil eliminator The pollutant of throttle orifice OL etc. tails off, and the control caused by being able to suppress by pollutant is bad and insufficient lubrication etc., so as to Improve the durability of scroll compressor 100.In addition, can will also justify without using conus portion 274 in capture element 270 The outer peripheral edge in plate portion 276 and the inner peripheral of annular portion 272 directly link.It in this case, can be in annular portion 272 and plectane At least one party in portion 276 forms the multiple apertures flowed through for lubricating oil, and above-mentioned part is as the part erected towards separation unit An example and enumerate.
Fig. 7 indicates the third embodiment of the capture element of capture pollutant.
Capture element 280, above-mentioned capture structure are equipped between the front end of inner cylinder 230B and the bottom wall of gas-liquid separation chamber 230A Part 280 forms the partition wall with shape described below.Capture element 280 includes: the annular portion 282 of thin plate annulus shape; The cylindrical portion 284 of cylindrical shape, above-mentioned cylindrical portion 284 are erected from the inner peripheral of annular portion 282;And the eaves of thin plate annulus shape Portion 286, above-mentioned eaves portion 286 extend from the upper end of cylindrical portion 284 towards radius outside.Here, cylindrical portion 284 is as direction point From portion erect part an example and enumerate.
The outer peripheral edge of annular portion 282 is secured within circumferential surface on the cross section of gas-liquid separation chamber 230A.In addition, cylindrical portion 284 are formed with the multiple aperture 284A for being connected to inner peripheral surface with outer peripheral surface on its cross section.For example, it is contemplated that the viscosity of lubricating oil Etc. the opening area that aperture 284A is suitably determined, so that lubricating oil can flow through herein.For example, it is contemplated that the quantity of the catch of lubricating oil is fitted When the forming position for determining aperture 284A.In addition, eaves portion 286 can inhibit to be undertaken on and catch in the same manner as eaves portion 268 shown in fig. 5 The a part for obtaining the lubricating oil of component 280 is rolled-up.
According to above-mentioned capture element 280, it is attached to the inner peripheral surface of gas-liquid separation chamber 230A and the lubricating oil OIL to drip is held It connects and goes out substantially in the upper surface of inner peripheral surface, annular portion 282 by gas-liquid separation chamber 230A and the outer peripheral surface zoning of cylindrical portion 284 The region of annulus shape.The lubricating oil OIL for being undertaken on above-mentioned zone flows through the aperture 284A of cylindrical portion 284, and to as storage The lower part for the gas-liquid separation chamber 230A that portion functions is discharged.At this point, lubricating oil OIL is temporarily being undertaken in substantially annulus shape After region, supernatant flows through the aperture 284A of cylindrical portion 284 and is discharged to the lower part of gas-liquid separation chamber 230A, therefore, energy Enough make the pollutant CON for being mixed into lubricating oil OIL precipitating to capture pollutant CON.
Further, since the upper end opening of cylindrical portion 284 is not blocked, therefore, the constituent part of capture element 280 becomes It is few, it can reduce its weight.In addition, lubricating oil OIL also can be along gas even if the upper end opening of cylindrical portion 284 is not blocked The inner peripheral surface of liquid separation chamber 230A drips, and therefore, the upper end opening that lubricating oil OIL flows through cylindrical portion 284 is directly dripped to its underpart A possibility that lower, will become smaller.Here, the upper end opening of cylindrical portion 284 is one as the intercommunicating pore for being connected to separation unit with reservoir Example and enumerate.
Therefore, in the same manner as first embodiment and second embodiment, it is imported into the back positioned at 230 downstream of oil eliminator The pollutant of pressure control valve 250 and throttle orifice OL etc. tail off, the control caused by being able to suppress by pollutant is bad and lubrication not It is good etc., so as to improve the durability of scroll compressor 100.In addition, change a possibility that a part of lubricating oil is rolled In the case where small, eaves portion 286 can be also omitted.
Fig. 8 shows the variations of capture element.
The capture element 290 of variation includes: the conus portion 292 of truncated cone shape, the cross-sectional area of above-mentioned conus portion 292 with It gradually becomes smaller upward;And the eaves portion 294 of thin plate annulus shape, upper end court of the above-mentioned eaves portion 294 from conus portion 292 Extend on the outside of radius.Here, the middle part of conus portion 292 is an example as the part erected towards separation unit and enumerates. The inner peripheral surface of gas-liquid separation chamber 230A is fixed in the outer peripheral edge of the lower end of conus portion 292.In addition, conus portion 292 is formed with The multiple aperture 292A for being connected to inner peripheral surface with outer peripheral surface on its cross section.
In addition, the substantially annulus shape gone out by the inner peripheral surface of gas-liquid separation chamber 230A and the outer peripheral surface zoning of conus portion 292 Region the lubricating oil OIL that the internal perisporium along gas-liquid separation chamber 230A drips is accepted.It is undertaken on the profit of above-mentioned zone Lubricating oil OIL flows through the aperture 292A of cylindrical portion 292, and arranges to the lower part of the gas-liquid separation chamber 230A functioned as reservoir Out.In addition, the functions and effects of above-mentioned capture element 290 are identical as above-mentioned first embodiment~third embodiment, therefore, In order to avoid repeated explanation, the description thereof will be omitted.If necessary, it can refer to previous explanation.
In this way, the capture element captured to the pollutant for being mixed into lubricating oil can be set as various shape.That is, capture As long as component forms to have and at least temporarily stores the lubricating oil separated out by separate section and its supernatant is expelled to storage The shape of the function in portion.In addition, being imported into even if filter is arranged in Back pressure control valve 250 in the same manner as the prior art The absolute magnitude of pollutant herein can also tail off, and therefore, filter will not block in a short time.
In the embodiment described above, as compressor, but it is also possible to be reciprocal premised on scroll compressor Formula compressor, tilted-plate compressor, rolling piston compressor and sliding-vane compressor etc..In addition, oil eliminator be not limited to from Heart separate type, such as be also possible in such a way that labyrinth passage separates lubricating oil with gas refrigerant.
Symbol description
100 scroll compressors (compressor)
230 oil eliminators
260 capture elements
264 cylindrical portions
264A aperture
268 eaves portions
270 capture elements
274 conus portions
274A aperture
280 capture elements
284 cylindrical portions
284A aperture
286 eaves portions
290 capture elements
292 conus portions
292A aperture
294 eaves portions
OIL lubricating oil.

Claims (5)

1. a kind of compressor, including oil eliminator, the oil eliminator includes separation unit, and the separation unit will using centrifugal force Lubricating oil is separated with working fluid;And reservoir, the reservoir are located at the lower section of the separation unit, and will pass through described point From the lubricating oil storage partially separated out, which is characterized in that
Capture element is equipped between the separation unit and the reservoir, the capture element will pass through the separate section The lubricating oil separated out is temporarily stored, and the supernatant of the lubricating oil is expelled to the reservoir.
2. compressor as described in claim 1, which is characterized in that
The capture element has the part erected towards the separation unit, in the partially formed supernatant having for lubricating oil At least one aperture flowed through.
3. compressor as claimed in claim 2, which is characterized in that
The capture element is made of the partition wall of hat-shaped.
4. compressor as claimed in claim 3, which is characterized in that
It is formed with intercommunicating pore in the central portion of the capture element, the intercommunicating pore connects the separation unit and the reservoir It is logical.
5. compressor as described in claim 3 or 4, which is characterized in that
In the eaves portion towards the annulus shape extended on the outside of radius that is formed integrally with the top portion of the capture element.
CN201880010417.2A 2017-02-07 2018-01-12 Compressor Withdrawn CN110312868A (en)

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PCT/JP2018/000583 WO2018146991A1 (en) 2017-02-07 2018-01-12 Compressor

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JP2019203651A (en) * 2018-05-24 2019-11-28 サンデン・オートモーティブコンポーネント株式会社 Oil separation structure and compressor
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JP7367225B2 (en) * 2020-09-30 2023-10-23 安徽威▲靈▼汽▲車▼部件有限公司 Scroll compressors, refrigeration equipment and vehicles

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WO2018146991A1 (en) 2018-08-16
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DE112018000719T5 (en) 2019-11-14

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