WO2006025127A1 - 圧縮機 - Google Patents
圧縮機 Download PDFInfo
- Publication number
- WO2006025127A1 WO2006025127A1 PCT/JP2005/002405 JP2005002405W WO2006025127A1 WO 2006025127 A1 WO2006025127 A1 WO 2006025127A1 JP 2005002405 W JP2005002405 W JP 2005002405W WO 2006025127 A1 WO2006025127 A1 WO 2006025127A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- communication passage
- lubricating oil
- peripheral surface
- compressor according
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/109—Lubrication
Definitions
- the present invention relates to a variable capacity compressor, and more particularly to a compressor having a mechanism for separating lubricating oil in a communication passage to a crank chamber force low pressure.
- a predetermined amount of lubricating oil for lubricating each movable member is sealed in the crank chamber. It flows out to the low pressure side through a communication passage that controls the pressure in the crank chamber.
- a large amount of oil accumulates in the refrigerant circuit, causing the compression drive mechanism to run out of lubricating oil, and if a large amount of lubricating oil is sucked into the compressor at a time due to the circulation of the lubricating oil, the compression of the incompressible fluid will occur. This causes the inconvenience of damaging each moving part.
- Patent Document 1 JP 2003-97423
- the present invention collects the lubricating oil flowing out via the connecting passage connected to the low pressure side for crank chamber force pressure control, and solves the shortage of lubricating oil.
- the compressor according to the present invention is configured such that two or more member forces are used to accommodate and empty the housing.
- the crank chamber force of the refrigerant is also reduced between the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing.
- a lubricating oil separating mechanism serving as the communication passage is provided between the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing. 1).
- the lubricating oil flowing out through the communication passage allowing the flow to the low pressure side of the crank chamber force is It is separated and recovered by a lubricating oil separation mechanism provided between the surface and the inner peripheral surface of the housing.
- the compression drive mechanism includes a rotation transmission member fixed to the drive shaft, a swash plate to which a rotation force is transmitted from the rotation transmission member, and a piston engaged with the swash plate (Claim 2).
- the lubricating oil separation mechanism is an uneven portion formed on the outer peripheral surface of the cylinder block or the inner peripheral surface of the housing and having a portion with which a fluid collides (Claim 3). It may be a dimple (Claim 5), or may be a plurality of grooves formed in the circumferential direction (Claim 6), or may be configured such that adjacent grooves communicate with each other (Claim 5). 7). Further, the lubricating oil separation mechanism has a path for returning the separated lubricating oil to the crank chamber (claim 4).
- the lubricating oil separation mechanism is provided on the outer peripheral surface of the cylinder block, so that the lubricating oil separation mechanism spreads over the area.
- the lubricating oil is separated by colliding with the wall, and flows down in the circumferential direction, collected, and returned to the crankcase again.
- a capturing member for guiding a refrigerant containing lubricating oil is disposed in the vicinity of the inlet of the communication passage (claim 8), and the capturing member is a mesh or a porous material (claim 9). This effectively lowers the flow velocity at the inlet of the refrigerant communication passage and ensures the capture.
- a shielding member that suppresses the inflow of lubricating oil is provided against the inlet portion of the connecting passage (claim 10), and the inflow of lubricating oil into the connecting passage is prevented.
- an outer shell protective member is disposed inside the housing, and the housing is disposed between the outer shell protective member and the housing.
- a second communication passage connected to the formed communication passage is formed between the cylinder and the cylinder block (claim 11).
- the outer shell protecting member is provided inside the housing and the second communication passage is formed between them, the inlet of the second communication passage to the crank chamber is the opposite opening end of the housing It is formed on the bottom (claim 12). As a result, it is formed even in the crank chamber where there is little distribution of scattered lubricant, and the amount of lubricant flowing out can be reduced.
- the communication passage is provided with a control valve for variable displacement control (Claim 15). Naturally, the capacity is controlled by the control valve, and the refrigerant passes through the communication passage to the low pressure side. However, the lubricating oil in the refrigerant is separated by the lubricating oil separation mechanism as described above.
- the outer shell protecting member is formed on the outer peripheral surface thereof with a plurality of concave grooves for relaxing tension in the axial direction, and a part thereof serves as a second communication passage. ).
- the lubricating oil flowing out through the communication passage allowing the flow to the low pressure side of the crank chamber force Separated and recovered by the lubricating oil separation mechanism provided between the outer peripheral surface of the block and the inner peripheral surface of the housing, and returned to the crank chamber again, the lubricating oil does not flow out into the cooling circuit, eliminating the lack of lubricating oil.
- the lubricating oil separation mechanism provided in the present invention is an uneven portion formed on the outer peripheral surface of the cylinder block or the inner peripheral surface of the housing and having a portion with which a fluid collides.
- a large number of dimples and a large number of dimples It is a structure in which grooves adjacent to each other are formed in circumferential grooves and circumferential grooves. For this reason, since the lubricating oil separation mechanism is provided on the outer peripheral surface of the cylinder block, the lubricating oil spreads over the area, the flow velocity of the refrigerant is reduced, and the lubricating oil is collided with the walls forming the dimples and the circumferential grooves. And collected by dropping in the circumferential direction by gravity (claims 3, 4, 5, 6, 7).
- the refrigerant can be reliably captured by the capturing member provided near the inlet of the communication passage, and the separation effect can be improved. Similarly, the amount of lubricating oil flowing in can be reduced by a shielding member facing the inlet of the communication passage (claims 8, 9, 10).
- the outer shell protective member is arranged inside the housing, the CO refrigerant that requires high pressure is used.
- the outer shell protecting member is provided so as to go around to the bottom side of the housing. As a result, the amount of lubricant flowing into the second communication passage can be reduced by the shielding effect and the heavy force effect (claim 13).
- FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.
- FIG. 2 is a side view of a cylinder block used in the above.
- FIG. 3 is a cross-sectional view showing a second embodiment of the present invention.
- FIG. 4 is a side view of a cylinder block and an outer shell protecting member used in the above.
- FIG. 5 is a perspective view of a cylinder block and an outer shell protecting member used in the above.
- FIG. 6 is a perspective view of an outer shell protecting member used in a third embodiment of the present invention. Explanation of symbols
- the compressor 1 includes a front nosing 3 constituting the housing 2 and a rear housing 4 closing the opening end thereof, and has a storage space 5 therein.
- the front housing 3 is a cylindrical body that is open on one side, and has an open end 7 on the right side and a small-diameter boss part 8 on the left side.
- the rear housing 4 has a discharge chamber 10 formed in an annular shape on the inner side surface from the radially outer side, and a suction chamber 11 formed in a ring shape on the inner side.
- a suction passage 12 communicates with the suction chamber 11 and is connected to an external refrigerant circuit (not shown).
- [0028] 14 is a control valve, and the internal spool valve is moved by the output from the external control unit, and the pressure in the crank chamber 24 described below is adjusted via the passage 15 which is a part of the communication passage 30 described below. By letting it go to the low pressure side, the pressure in the crank chamber is controlled to change the angle of the swash plate 45 and change the discharge amount.
- the valve plate 17 is provided between the rear housing 4 and a cylinder block 25 described below, and a pair of discharge holes 18 and suction holes 19 are provided in the same number as the number of cylinder bores 27 described below. Yes.
- the valve plate 17 is provided with a suction valve (not shown) facing the suction hole 19 on the cylinder block side, and a discharge (not shown) facing the discharge hole 18 on the rear housing side.
- a valve is arranged, and a retainer 20 that regulates the lift amount of the discharge valve is attached to the valve plate 17.
- 22 is a passage formed in the nozzle plate 17 and is a part of the communication passage 30 described below.
- the cylinder block 25 is housed in the housing space 5 of the housing 2, is fixed to the rear housing 4 by a fixing bolt (not shown), and a crank chamber 24 is provided on the left side of the housing space 5 of the housing 2. Forming.
- the cylinder block 25 is formed with a holding hole 26 for a drive shaft 37, which is bottomed in the axial direction at the center, and six cylinder bores 27 are formed at equal angles in the axial direction around it. Yes.
- a lubricating oil separation mechanism 32 that becomes a part of the communication passage 30 described below.
- the lubricating oil separation mechanism 32 is configured to have a concavo-convex portion 33 on the outer peripheral surface of the cylinder block. As shown in FIG. 2, the uneven portion 33 is a dimple. Accordingly, the refrigerant flowing through the lubricating oil separation mechanism 32 collides with the concave and convex portion 33, and the lubricating oil is separated. The lubricating oil is transmitted along the outer periphery by gravity and falls downward, and is returned to the crank chamber 24 again.
- the communication passage 30 is used to control the pressure in the crank chamber 24.
- the lubricating oil separating mechanism 32 formed between the housing 2 and the cylinder block 25, the through hole 22 of the valve plate 17, and the through hole 15 formed in the rear housing 4 are arranged in the crank chamber 24.
- the control valve 14 is connected so as to allow flow to the low pressure side as appropriate.
- a capturing member 34 for guiding a coolant containing lubricating oil is arranged at the inlet of the communication passage 30, that is, the inlet of the lubricating oil separating mechanism 32.
- the capturing member 34 is, for example, a mesh or a porous material. This trapping member 34 causes a decrease in the flow velocity at the inlet to ensure trapping.
- Reference numeral 35 denotes a ring-shaped shielding member that opposes the inlet portion of the communication passage 30 and prevents the lubricating oil from flowing along the inner wall of the front housing 3.
- the drive shaft 37 is rotated by a rotational force transmitted from an external engine.
- the tip of the drive shaft 37 is inserted into the holding hole 26, and the cylinder block 25 is inserted through a radial bearing 38 and a thrust bearing 39.
- the base end side is supported by the front housing 3 via a radial bearing 40 and a thrust bearing 41.
- a rotation transmission member 43 is fixed to the drive shaft 37 and is rotated together with the drive shaft 37. The rotational force of the rotation transmitting member 43 is transmitted to the swash plate 45 described below.
- the swash plate 45 is swingably attached to the drive shaft 37 with the shaft 47 as a fulcrum. That is, the shaft 47 is supported and supported by the double-side force springs 47a and 47b in a long hole 46 formed in the axial direction of the drive shaft 37. A neck 48 a of the piston 48 is engaged with the outer periphery of the swash plate 45 via a shoe 49. Therefore, when the swash plate 45 rotates, the stroke amount of the piston 48 is determined relative to the inclination angle. That is, the stroke amount decreases as the tilt angle decreases, and conversely as it increases, the stroke amount increases.
- the inclination angle of the swash plate 45 is obtained according to the pressure difference between the pressure in the crank chamber 24 and the refrigerant pressure in the compression chamber via the piston, and the discharge amount is controlled by the pressure control in the crank chamber 24. It is metered.
- variable capacity compressor 1 adjusts the crank chamber pressure by letting the control valve 14 release the pressure in the crank chamber 24 to the low pressure side through the communication passage 30 and thereby the swash plate. A tilt angle of 45 is selected. Thereby, the stroke amount of the piston 48 is appropriately set, and the discharge amount is controlled.
- crank chamber 24 is lubricated by the rotation of the swash plate 45.
- the lubricant oil becomes mist, stagnates in a mixture with the refrigerant, and is captured by the capture member 34.
- the trapped refrigerant containing the low flow velocity lubricating oil flows through the communication passage 30 and reaches the lubricating oil separation mechanism 32 before it flows out to the low pressure side.
- the separated lubricating oil falls downward along the outer peripheral surface of the cylinder block 25, is collected at the lower part, and is returned to the crank chamber 24 again.
- the uneven part 33 is provided on the outer peripheral surface of the cylinder block 25, a wide lubricating oil separation mechanism 32 is obtained, and a route for returning the lubricating oil to the crank chamber is provided.
- the uneven portion 33 may be provided not on the outer peripheral surface of the cylinder block but on the inner peripheral surface of the housing 2.
- FIG. 3 FIG. 4, and FIG. 5, a second embodiment of the present invention is shown.
- the difference between the second embodiment and the first embodiment is the structure of the lubricating oil separation mechanism 32. Therefore, only the differences will be explained.
- the uneven portion 33 of the lubricating oil separation mechanism 32 is formed with a plurality of grooves 52 in the circumferential direction on the outer peripheral surface of the cylinder block 25, and communication portions 53 that communicate the adjacent grooves 52 at random.
- the refrigerant flows in a zigzag manner in each groove 52, collides with a wall portion constituting the groove 52, and the lubricating oil is separated.
- the separated lubricating oil falls downward along the groove 52 due to gravity and is returned to the crank chamber 24 again. Only a large number of grooves 52 having no communication portion may be used.
- an outer shell protective member 54 made of an aluminum alloy or a resin material is disposed on the inner peripheral surface of the front housing 3. Since the outer shell protective member 54 is provided, the inlet portion of the communication passage 30 is closed, and therefore the second communication passage 55 communicating with the communication passage 30 is provided on the housing side of the outer shell protection member 54. Is formed in the axial direction, and an inlet 55a is provided at the side opposite to the cylinder block. This inlet 55a has a small distribution of lubricant scattering even in the crank chamber, and has the advantage of reducing the amount of lubricant flowing out.
- the outer shell protecting member 54 can serve as a shield to prevent the housing from being destroyed. Since the diameter of the non-cylinder block side of the outer shell protecting member is reduced, the outer shell protecting member is provided around the bottom side of the front housing to protect the bottom portion of the front housing, which is the most easily broken portion. Other Since this part is the same as that of the first embodiment described above, the same reference numerals are assigned to the same parts and the description thereof is omitted.
- FIG. 6 shows a third embodiment of the present invention.
- the difference between the third embodiment and the second embodiment is that the coefficient of thermal expansion differs due to the difference in material between the outer shell protective member 54 and the front housing 3, and means for mitigating it is provided. There is in being. That is, a large number of depressions 56 for relaxing the tension are formed in the axial direction on the outer peripheral surface of the outer shell protecting member 54, and one place is used as the second communication passage 55.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004252725A JP2006070745A (ja) | 2004-08-31 | 2004-08-31 | 圧縮機 |
JP2004-252725 | 2004-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006025127A1 true WO2006025127A1 (ja) | 2006-03-09 |
Family
ID=35999791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/002405 WO2006025127A1 (ja) | 2004-08-31 | 2005-02-17 | 圧縮機 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2006070745A (ja) |
WO (1) | WO2006025127A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008026405A1 (fr) * | 2006-08-29 | 2008-03-06 | Sanden Corporation | Compresseur |
CN106150981A (zh) * | 2016-07-21 | 2016-11-23 | 江苏盈科汽车空调有限公司 | 一种空调压缩机封盖 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5644483A (en) * | 1979-09-19 | 1981-04-23 | Hitachi Ltd | Swash plate type compressor |
JPH08296553A (ja) * | 1995-04-28 | 1996-11-12 | Calsonic Corp | 斜板式コンプレッサ |
JP2002295370A (ja) * | 2001-03-29 | 2002-10-09 | Seiko Instruments Inc | 気体圧縮機 |
JP2003097423A (ja) * | 2001-09-21 | 2003-04-03 | Sanden Corp | 可変容量圧縮機 |
JP2003184742A (ja) * | 2001-12-21 | 2003-07-03 | Yunikura J:Kk | 斜板式圧縮機およびそのハウジング |
-
2004
- 2004-08-31 JP JP2004252725A patent/JP2006070745A/ja active Pending
-
2005
- 2005-02-17 WO PCT/JP2005/002405 patent/WO2006025127A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5644483A (en) * | 1979-09-19 | 1981-04-23 | Hitachi Ltd | Swash plate type compressor |
JPH08296553A (ja) * | 1995-04-28 | 1996-11-12 | Calsonic Corp | 斜板式コンプレッサ |
JP2002295370A (ja) * | 2001-03-29 | 2002-10-09 | Seiko Instruments Inc | 気体圧縮機 |
JP2003097423A (ja) * | 2001-09-21 | 2003-04-03 | Sanden Corp | 可変容量圧縮機 |
JP2003184742A (ja) * | 2001-12-21 | 2003-07-03 | Yunikura J:Kk | 斜板式圧縮機およびそのハウジング |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008026405A1 (fr) * | 2006-08-29 | 2008-03-06 | Sanden Corporation | Compresseur |
CN106150981A (zh) * | 2016-07-21 | 2016-11-23 | 江苏盈科汽车空调有限公司 | 一种空调压缩机封盖 |
Also Published As
Publication number | Publication date |
---|---|
JP2006070745A (ja) | 2006-03-16 |
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