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Compressor provided with an oil separatorRelated Patent Categories: Pumps, CombinedCompressor provided with an oil separator description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060110266, Compressor provided with an oil separator. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] The present invention relates to a compressor provided with an oil separator. [0002] Japanese Patent Laid-Open Publications No. 11-324910 and No. 2001-289164 disclose compressors comprising a compressing device, an outlet chamber, a centrifugal separator for separating lubricating oil from refrigerant gas discharged from the compressing device into the outlet chamber and a casing for accommodating the compressing device, the outlet chamber and the centrifugal separator. [0003] In the aforementioned compressors, lubricating oil separated from refrigerant gas is led to sliding parts of the compressing device. [0004] Each of the aforementioned compressors has a problem in that the structure of the compressor is complicated and the manufacturing cost of the compressor is high because a separation chamber for accommodating the centrifugal separator is disposed in the casing of the compressor independently of the outlet chamber and a refrigerant gas passage for communicating the outlet chamber with the separation chamber is formed in the casing of the compressor. SUMMARY OF THE INVENTION [0005] An object of the present invention is to provide a compressor comprising a compressing device, an outlet chamber, a centrifugal separator for separating lubricating oil from refrigerant gas discharged from the compressing device into the outlet chamber and a casing for accommodating the compressing device, the outlet chamber and the centrifugal separator, wherein the structure of the compressor is simpler and the manufacturing cost of the compressor is lower than the compressors disclosed in Japanese Patent Laid-Open Publications No. 11-324910 and No. 2001-289164. [0006] In accordance with the present invention, there is provided a compressor comprising a compressing device, an outlet chamber, a centrifugal separator for separating lubricating oil from refrigerant gas discharged from the compressing device into the outlet chamber and a casing for accommodating the compressing device, the outlet chamber and the centrifugal separator, wherein a lubricating oil separator assembly comprising a bulkhead forming a refrigerant gas passage and the centrifugal separator assembled with the bulkhead as a unitary body is disposed in the outlet chamber. [0007] In the compressor of the present invention, there is no need for disposing a separation chamber in the casing of the compressor independently of the outlet chamber and a refrigerant gas passage for communicating the separation chamber with the outlet chamber in the casing of the compressor because a lubricating oil separator assembly comprising a bulkhead forming a refrigerant gas passage and the centrifugal separator assembled with the bulkhead as a unitary body is disposed in the outlet chamber. Therefore, the compressor in accordance with the present invention is simpler in structure and lower in manufacturing cost than the compressors disclosed in Japanese Patent Laid-Open Publications No. 11-324910 and No. 2001-289164. [0008] In a preferred embodiment of the present invention, the centrifugal separator is formed integrally with the bulkhead. [0009] When the centrifugal separator is formed integrally with the bulkhead, the number of elements becomes smaller and the manufacturing cost becomes lower in comparison with the case when the bulkhead and the centrifugal separator are formed independently of each other and assembled as a unitary body. [0010] In another preferred embodiment of the present invention, the bulkhead cooperates with the surrounding wall of the outlet chamber to form the refrigerant gas passage. [0011] When the bulkhead cooperates with the surrounding wall of the outlet chamber to form the refrigerant gas passage, the weight of the member necessary for forming the refrigerant gas passage decreases to decrease the weight of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS [0012] In the drawings: [0013] FIG. 1 is a sectional view of a variable displacement swash plate compressor for a car air conditioner in accordance with a preferred embodiment of the present invention. [0014] FIG. 2 is a structural view of a lubricating oil separator assembly provided for the variable displacement swash plate compressor for a car air conditioner in accordance with the preferred embodiment of the present invention, wherein (a) is a side view and (b) is a view in the direction of arrows b-b in (a). [0015] FIG. 3 is a fragmentary sectional view of the variable displacement swash plate compressor for a car air conditioner in accordance with the preferred embodiment of the present invention. [0016] FIG. 4 is an exploded perspective view of a cylinder head of the variable displacement swash plate compressor for a car air conditioner in accordance with the preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0017] A variable displacement swash plate compressor for a car air conditioner in accordance with a preferred embodiment of the present invention will be described. [0018] As shown in FIG. 1, a variable displacement swash plate compressor A for a car air conditioner is provided with a rotating shaft 10, a rotor 11 fixed to the rotating shaft 10, a swash plate 12 fitted on the rotating shaft 10 to engage the rotating shaft 10 sidably and to be variable in inclination relative to the rotating shaft 10 and a spring 13 slidably fitted on the rotating shaft 10 to engage the rotor 11 and the swash plate 12. The swash plate 12 is connected to the rotor 11 through a linkage 14 to be variable in inclination relative to the driving shaft 10, thereby rotating synchronously with the rotating shaft 10. [0019] A plurality of pistons 16 engage the swash plate 12 through a plurality of pairs of shoes 15 that slidably engage the outer peripheral portion of the swash plate 12. The pistons 16 are inserted into cylinder bores 17a formed in a cylinder block 17. [0020] The plurality of pairs of shoes 15, the pistons 16 and the cylinder bores 17a are distanced from each other in the circumferential direction. Continue reading about Compressor provided with an oil separator... Full patent description for Compressor provided with an oil separator Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Compressor provided with an oil separator patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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