WO2002053913A1 - Compresseur - Google Patents
Compresseur Download PDFInfo
- Publication number
- WO2002053913A1 WO2002053913A1 PCT/JP2001/005489 JP0105489W WO02053913A1 WO 2002053913 A1 WO2002053913 A1 WO 2002053913A1 JP 0105489 W JP0105489 W JP 0105489W WO 02053913 A1 WO02053913 A1 WO 02053913A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- suction
- chamber
- compressor
- discharge
- rear head
- 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
- F04B39/00—Component 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
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
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- 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
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- 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
- F04B27/1081—Casings, housings
Definitions
- the present invention relates to a compressor having a configuration for preventing a pressure wave generated in a suction, compression, and discharge strokes of a compression mechanism.
- Japanese Patent Application Laid-Open No. H11-1351142 discloses a suction port for sucking a refrigerant gas from an evaporator, a suction chamber for containing the refrigerant gas flowing from the suction port, A swash plate that is slidably and tiltably mounted on the rotating shaft and that rotates integrally with the rotating shaft; a piston that reciprocates by the swinging motion of the swash plate; and the piston is slidably inserted. At least a cylinder appropriately communicating with the suction chamber or the discharge chamber, wherein the rotation of the rotating shaft is converted into reciprocation of bistons by a swash plate, and the volume of the cylinder is varied by the reciprocating bistons in the cylinder.
- a compressor that sucks and compresses a refrigerant gas in a suction chamber by a change and discharges the refrigerant gas to a discharge chamber.
- the compressor When the load becomes minimum, the compressor raises the pressure in the crankcase to minimize the inclination of the swash plate to minimize the discharge capacity, and at the same time, closes the suction rotor to remove the refrigerant gas. It has a clutchless mechanism that stops suction and circulates refrigerant gas in the compressor to prevent the evaporator from freezing.However, in the so-called piston reciprocating compressor described above, the piston reciprocates as the swash plate rotates. It moves, and the suction and discharge valves open and close in response to pressure fluctuations in the compression chamber, and suction, compression and discharge are repeated. At this time, delays in opening and closing the valve and fluttering of the valve itself occur. Pressure waves are released into the suction chamber or discharge chamber provided between the inlet port and the compression chamber, and the resonance frequency in the chamber may be induced to grow as a very strong pulsating wave.
- the pulsation wave on the suction chamber side at a predetermined frequency within the range of 400 Hz to 100 Hz, and the eigenvalue (resonance frequency) of the evaporator, vibrates the evaporator body, Unpleasant noise was transmitted to the passenger compartment, causing problems.
- damping mufflers were installed on the pipes to attenuate the suction pulsation, and the suction passage of the compressor was throttled, but this resulted in increased costs and reduced performance. There was a problem that it was invited.
- the condenser is arranged in the vehicle cabin, and the pulsation wave generated by the discharge pulsation of the compressor also causes vibration in the capacitor, which causes noise. It was connected.
- an object of the present invention is to provide a compressor that can attenuate suction pulsation or discharge pulsation of the compressor with a simple structure. Disclosure of the invention
- the present invention provides a housing including a front head, a cylinder block, and a rear head, a compression mechanism driven by rotation of a drive shaft provided through the front head, and the rear head.
- a compressor provided with at least a suction chamber in which a suction port of the compression mechanism is opened, and a discharge chamber formed in the head and in which a discharge port of the compression mechanism is opened;
- One of the chambers is formed at the center of the rear head, and the other of the suction chamber or the discharge chamber is formed outside thereof, and one of the suction chamber or the discharge chamber formed at the center of the rear head.
- a tunnel-like communication passage penetrating and communicating with a corresponding port is formed, and a muffler space is formed between the communication passage and a pipe connection portion to which the port is attached.
- one of the suction chamber and the discharge chamber formed at the center side of the rear head is communicated with the corresponding port through the tunnel-shaped communication passage, and the tunnel-shaped communication passage is formed. Since a muffler space is formed between the suction passage and the pipe connection portion to which the port is attached, when the communication passage connects the suction chamber and the pipe connection portion of the suction port, suction pulsation is suppressed or prevented. When the communication passage connects the discharge chamber and the pipe mounting portion of the discharge port, discharge pulsation can be prevented.
- the muffler space communicates with an outer end of the communication path.
- tunnel section defining the communication path may be formed integrally with the rear head, and may be formed by inserting a pipe member separate from the rear head. Is also good.
- the compression mechanism is formed in the cylinder block, and has a plurality of cylinders each having a suction port communicating with the suction chamber and a discharge port communicating with the discharge chamber, and a reciprocating cylinder. It is preferable that at least the piston be inserted, a rotary swash plate that rotates together with the drive shaft and reciprocates the piston, and a variable capacity mechanism that can change the angle of the rotary swash plate. .
- the communication passage is a suction passage that communicates the suction chamber with a corresponding suction port.
- the communication passage is a suction passage that communicates the suction chamber with a corresponding suction port.
- a small hole communicating with the suction passage is formed at a rear end portion of the muffler space, and oil retained in the muffler space is returned to the suction passage.
- a valve mechanism capable of opening and closing the suction passage by an external signal is provided in the suction passage.
- the small hole is opened on the upstream side of the valve mechanism.
- the formation of the bypass passage bypassing the valve mechanism can be prevented, so that the configuration of the clutchless can be effectively used.
- FIG. 1 is a sectional view of a compressor according to an embodiment of the present invention
- FIG. 2 is an explanatory diagram showing a communication passage and a muffler space.
- a compressor 1 shown in FIG. 1 has a housing 5 including a front head 2, a cylinder block 3, and a rear head 4.
- the rotating shaft 6 penetrates the front head 2 and is rotatably supported by the front head 2 and the cylinder block 3.
- a crank chamber 7 is defined in the front head 2, and an opening is closed by the cylinder block 3.
- a valve plate 8 is sandwiched and fixed between the cylinder block 3 and the rear head 4.
- a plurality of cylinders 9 are formed around the rotation shaft 6 so as to extend in the axial direction of the rotation shaft 6, and the cylinder 9 is formed in the valve plate 8.
- the suction port 10 and the discharge port 11 are opened, and the suction port 10 and the discharge port 11 are closed by a valve body.
- the pistons 12 are slidably inserted into the respective cylinders 9, and the ends of the pistons 12 on the crank chamber side are slidably engaged with the rotary swash plates 13, respectively.
- the plate 13 is rotated by a rotation plate 14 fixed to the rotation shaft 6 via a coupling mechanism 30.
- the rotary swash plate 13 is mounted on the rotary shaft 6 so that the angle of the rotary swash plate 13 with respect to the rotary shaft 6 can be changed.
- a baffle plate 31 and a cover 32 are provided on the outer peripheral portion of the cylinder block 3, and a discharge passage 15 communicating with a discharge port (not shown) is defined in the cover 32.
- a discharge gas passage hole 33 is provided in the baffle plate 31 so as to reduce discharge pulsation.
- a discharge chamber 16 communicating with a discharge port 11 formed in the valve plate 8 is formed on an outer portion of the rear head 4, and a central portion of the rear head 4 is formed.
- a suction chamber 17 communicating with the suction chamber 10 is formed at the bottom.
- the discharge chamber 16 communicates with the crank chamber 7 via a pressure control valve 18 mounted on the rear head 4.
- the pressure control valve 18 is controlled by an external control signal, and when it is determined that the refrigeration capacity is unnecessary, the power supply to the pressure control valve 18 is stopped and the pressure is supplied as the heat load increases. The amount of current increases.
- a suction port 20 into which a suction-side connector 19 to which a pipe from an evaporator (not shown) is connected is formed on the outer peripheral side surface of the rear head 4.
- the suction port 20 is connected to the suction port 20 via a communication path 21 defined by a tunnel portion 25 formed integrally with the rear head 4.
- a closing valve 22 for opening and closing the communication passage 21 is provided on the communication passage 21 so that the refrigerant gas is not sucked from the evaporator when the refrigerating capacity is determined to be unnecessary. It is designed to block passage 21.
- a muffler space 23 is formed around the tunnel portion 25 defining the communication passage 21 as shown in FIGS.
- One end of the muffler space 23 is open to the suction port 20, and the other end (back end) is formed with a small hole 24 communicating with the upstream side of the closing valve 22 of the communication passage 21. I have.
- the muffler space 23 is formed to have a length of about 30 mm along the communication path 21 around the tunnel portion 25. By setting it to about 300 mm, an attenuation peak frequency of about 800 Hz can be obtained. In general, it is desirable to predict the attenuation frequency with respect to the length of the muffler space 23 by the finite element method, and to set the length of the muffler space 23 corresponding to a desired attenuation frequency band.
- the refrigerant gas evaporated by the evaporator is drawn into the suction chamber 17 from the suction port 20 through the communication passage 21 and is compressed, and then is discharged from the discharge chamber 16 through the discharge passage 15 to the next step. For example, it is sent to a capacitor.
- the supply of the high pressure to the crank chamber 7 is reduced by the pressure control valve 18, the pressure in the crank chamber is reduced, and the back pressure of the piston 12 is reduced. If the stroke of the piston 12 becomes large and the discharge amount of the compressor 1 becomes large, and it is determined that the refrigerating capacity is unnecessary, the high pressure is supplied to the crank chamber 7 by the pressure control valve 18.
- the refrigerant gas is sucked, compressed, and discharged by the suction, compression, and discharge strokes of the compressor 1.
- a plurality of pistons are generated.
- evaporation regulator Since it is performed intermittently in 12, pressure fluctuations occur in the suction chamber 17 and propagate as pulsation waves to the evaporator side.
- evaporation regulator since it is provided in the passenger compartment, (depends on the kind, 3 0 0 H between z ⁇ 1 0 0 0 H Z) This pulsating wave resonance frequency of the evaporator and uncomfortable if they match
- the muffler space 23 is provided in the vicinity of the communication path 21, so that the pulsation wave may be attenuated in the frequency band. You can.
- the pulsation wave of the compressor is larger on the high-pressure side than on the low-pressure side.
- resonance in the condenser becomes a problem as noise.
- the discharge chamber is arranged on the center side of the rear head 4, and the suction chamber is arranged around the discharge chamber, and a communication path for communicating the discharge chamber with the discharge port is provided.
- a muffler space communicating with this communication passage may be formed. This makes it possible to attenuate the pulsating wave propagating from the discharge chamber to the condenser side, thereby preventing resonance in the condenser.
- a small hole 24 is formed at an inner end of the muffler space 23 to communicate the muffler space 23 with the upstream side of the closing valve 22 of the communication passage 21. 3 prevents oil from stagnating.
- the damping effect of the muffler space 23 is related to the length (depth) of the muffler space 23. For this reason, if oil stays in the muffler space 23, the depth of the muffler space 23 changes, and the frequency band to be attenuated changes. It forms 4 to prevent oil stagnation.
- the diameter of the small hole 24 is desirably about 1 mm. If it is larger than about 1 mm, the frequency band to be attenuated will change. If it is smaller than about 1 mm, the oil discharge effect will decrease. However, the diameter of the small holes 24 may be changed to positively change the attenuation frequency band. Further, since the small hole 24 is opened on the upstream side of the closing valve 22, when the closing valve 22 closes the communication passage 21, the suction chamber 17 and the suction port are connected through the small hole 24. Since the communication passage 20 is not communicated, the communication passage 21 can be reliably closed. Industrial applicability
- the muffler space is provided in the communication passage between the suction side or the discharge side and the corresponding port. Since pulsating waves generated on the suction side or the discharge side can be attenuated, unpleasant noise in the vehicle interior can be prevented.
- the muffler space is formed on the outer periphery of the tunnel defining the communication passage of the rear head, the muffler space can be formed integrally with the rear head, so that the cost does not increase. Things. Also, in the case of separate formation, it is only necessary to first form the communication passage and the muffler space in the rear head, and then attach the pipe that defines the communication passage later, so that it is easily formed. It is possible to suppress the increase in cost.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01945621A EP1357288A4 (en) | 2000-12-28 | 2001-06-27 | COMPRESSOR |
US10/451,490 US20040052648A1 (en) | 2000-12-28 | 2001-06-27 | Compressor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-399676 | 2000-12-28 | ||
JP2000399676A JP2002202054A (ja) | 2000-12-28 | 2000-12-28 | 圧縮機 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002053913A1 true WO2002053913A1 (fr) | 2002-07-11 |
Family
ID=18864407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/005489 WO2002053913A1 (fr) | 2000-12-28 | 2001-06-27 | Compresseur |
Country Status (4)
Country | Link |
---|---|
US (1) | US20040052648A1 (ja) |
EP (1) | EP1357288A4 (ja) |
JP (1) | JP2002202054A (ja) |
WO (1) | WO2002053913A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7181926B2 (en) | 2005-05-23 | 2007-02-27 | Visteon Global Technologies, Inc. | Oil separator and muffler structure |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4888803B2 (ja) | 2005-07-04 | 2012-02-29 | 株式会社ヴァレオジャパン | 圧縮機 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07139463A (ja) * | 1993-11-12 | 1995-05-30 | Toyota Autom Loom Works Ltd | 往復動型圧縮機 |
JPH09273477A (ja) * | 1996-04-05 | 1997-10-21 | Sanden Corp | 往復動圧縮機 |
JP2000249059A (ja) * | 1999-03-01 | 2000-09-12 | Toyota Autom Loom Works Ltd | 圧縮機の吸入マフラ構造 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1972750A (en) * | 1932-07-30 | 1934-09-04 | Westinghouse Air Brake Co | Air compressor |
JPS51105608A (ja) * | 1975-03-13 | 1976-09-18 | Sentoraru Jidosha Kogyo Kk | |
JP2000337255A (ja) * | 1999-05-26 | 2000-12-05 | Toyota Autom Loom Works Ltd | 減衰装置及び圧縮機の吸入構造 |
JP2001041160A (ja) * | 1999-07-28 | 2001-02-13 | Toyota Autom Loom Works Ltd | 圧縮機の脈動減衰構造 |
KR100576631B1 (ko) * | 1999-12-21 | 2006-05-04 | 한라공조주식회사 | 맥동압 저감구조를 가지는 압축기 |
-
2000
- 2000-12-28 JP JP2000399676A patent/JP2002202054A/ja active Pending
-
2001
- 2001-06-27 EP EP01945621A patent/EP1357288A4/en not_active Withdrawn
- 2001-06-27 WO PCT/JP2001/005489 patent/WO2002053913A1/ja not_active Application Discontinuation
- 2001-06-27 US US10/451,490 patent/US20040052648A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07139463A (ja) * | 1993-11-12 | 1995-05-30 | Toyota Autom Loom Works Ltd | 往復動型圧縮機 |
JPH09273477A (ja) * | 1996-04-05 | 1997-10-21 | Sanden Corp | 往復動圧縮機 |
JP2000249059A (ja) * | 1999-03-01 | 2000-09-12 | Toyota Autom Loom Works Ltd | 圧縮機の吸入マフラ構造 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1357288A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7181926B2 (en) | 2005-05-23 | 2007-02-27 | Visteon Global Technologies, Inc. | Oil separator and muffler structure |
Also Published As
Publication number | Publication date |
---|---|
US20040052648A1 (en) | 2004-03-18 |
JP2002202054A (ja) | 2002-07-19 |
EP1357288A4 (en) | 2004-03-03 |
EP1357288A1 (en) | 2003-10-29 |
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