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Electromotive swash plate type compressorRelated Patent Categories: Pumps, Three Or More Cylinders Arranged In Parallel, Radial, Or Conical Relationship With Rotary Transmission AxisElectromotive swash plate type compressor description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070020118, Electromotive swash plate type compressor. Brief Patent Description - Full Patent Description - Patent Application Claims
TECHNICAL FIELD [0001] The present invention relates to a compressor with an electromotive swash plate, and more particularly, to a multi-stage compressor with an electromotive swash plate. BACKGROUND ART [0002] Generally, an air conditioner for a vehicle compresses a refrigerant in a compressor, condenses the compressed refrigerant in a condenser, and transmits the condensed refrigerant to an expansion valve. Then, the expansion valve converts the condensed refrigerant into wet vapor with low temperature and low pressure and transmits the wet vapor to an evaporator. The wet vapor transmitted to the evaporator is heat-exchanged with external air to absorb heat of the external air and is then returned to the compressor for recirculation. [0003] The compressor used for compressing the refrigerant functions to (a) intake a heat-exchange medium evaporated in the evaporator, (b) compress the heat-exchange medium, and (c) pump out the heat-exchange medium for the continuous circulation of the heat-exchange medium. Such a compressor is classified, according to a driving manner, into a swash plate type, a scroll type, a rotary type, and a wobble plate type. [0004] The swash plate type compressor comprises a cylinder block having a plurality of bores in which respective pistons reciprocate. The cylinder block is fixed by front and rear housings. A driving shaft is installed in a central portion of the cylinder block. A swash plate is inserted in the cylinder block and coupled to the driving shaft. As the swash plate rotates, the pistons successively reciprocate in a longitudinal direction of the cylinder block. The swash plate type compressor is classified into a single-head type, where the compression is realized in a sided portion, and a double-head type, where the compression is realized in opposite sides. The latter comprises low and high-pressure chambers formed in the rear housing. The low-pressure chamber is provided to allow the refrigerant to be introduced into the cylinder via a valve assembly and the high-pressure chamber is provided to compress the refrigerant using the pistons. The pistons are formed of a dual-head piston to alternatively compress the refrigerant to the high-pressure chambers of the front and rear housings. The refrigerant compressed to the high pressure chamber of the front housing is discharged to the rear housing through a communication passage formed between the cylinder and the bore, and is then further discharged to a discharge chamber of a manifold installed on an external side of the compressor. [0005] The valve assembly is formed between inner surfaces of the front and rear housings and external opposite ends of the cylinder to allow the refrigerant in the fluid passage to be introduced into the cylinder and to control the flow of the refrigerant when the introduced refrigerant is compressed by the pistons. That is, in accordance with the operation of the valve assembly, the refrigerant is introduced into the cylinder and compressed by the piston. The compressed refrigerant is discharged out of the compressor by the valve assembly. [0006] As a power source for rotating the driving shaft of the compressor, an engine or a motor may be used. The motor is generally used for a scroll type compressor and a single-head swash plate type compressor. The compressor using the motor comprises a motor part and a compressing part for compressing the refrigerant. [0007] Japanese Laid-open patent publication No. 2001-193639 discloses a single-head swash plate type compressor in which gas that is primarily compressed at a side is recompressed by a piston corresponding to a next rotation turn. [0008] In this swash type compressor, while the discharge direction of the refrigerant is uniform, but discharge pressure is not uniform, thereby deteriorating the operational reliability due to the variation of the discharge pressure pulsation and torque. BRIEF DESCRIPTION OF THE DRAWINGS [0009] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: [0010] FIG. 1 is a sectional view of a compressor with an electromotive swash plate according to an embodiment of the present invention; [0011] FIG. 2 is a perspective view of a cylinder block depicted in FIG. 1; [0012] FIG. 3 is a sectional view taken along line A-A of FIG. 1; [0013] FIG. 4 is a sectional view taken along line B-B of FIG. 1; [0014] FIG. 5 is a sectional view of a compressor with an electromotive swash plate according to another embodiment of the present invention; [0015] FIG. 6 is a sectional view taken along line C-C of FIG. 5; and [0016] FIG. 7 is a sectional view taken along line D-D of FIG. 5. DETAILED DESCRIPTION OF THE INVENTION Technical Goal of the Invention [0017] The present invention provides a compressor with an electromotive swash plate, which can provide uniform discharge pressure. [0018] The preset invention also provides a compressor with an electromotive swash plate, which can improve compression efficiency. [0019] The present invention also provides a compressor with an electromotive swash plate, which can improve lubrication for the operation of a swash plate in a swash plate chamber. Continue reading about Electromotive swash plate type compressor... Full patent description for Electromotive swash plate type compressor Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Electromotive swash plate type compressor 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. 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