Displacement control valve of a variable displacement swash plate
a technology of displacement control valve and variable displacement, which is applied in the direction of machines/engines, positive displacement liquid engines, liquid fuel engines, etc., can solve the problems of preventing smooth movement of valve shaft and operation of displacement control valve, and achieve the effect of generating whirl movemen
Inactive Publication Date: 2006-06-08
SANDEN CORP
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- Application Information
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Benefits of technology
[0005] An object of the present invention is to provide a displacement control valve of a variable displacement swash plate compressor comprising a valve body provided with a valve shaft, a driver for applying driving force to the valve body, a tube-shaped valve chest accommodating the valve body to be capable of reciprocal movement and provided with a valve shaft inserting hole through which the valve shaft of the valve body is passed slidably at one end wall, an inlet hole at a circumferential wall and a valve hole which is opened and closed by the valve body at the other end wall, wherein the inlet hole communicates with an outlet chamber of the compressor and the valve hole communicates with a crank chamber of the compressor, and wherein invasion of small particles of foreign matter into a space between the circumferential wall of the valve shaft inserting hole and the valve shaft of the valve body is prevented.
Problems solved by technology
The aforementioned displacement control valve has a problem in that small particles of foreign matter or abraded matter in the compressor, or small particles of foreign matter in an external refrigeration circuit flow through the inlet hole into the valve chest entrained by the refrigerant gas to invade into a space between the circumferential wall of the valve shaft inserting hole and the valve shaft of the valve body, thereby preventing smooth movement of the valve shaft and the operation of the displacement control valve.
Method used
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Embodiment Construction
[0025] A displacement control valve of a variable displacement swash plate compressor in accordance with a preferred embodiment of the present invention will be described.
[0026] As shown in FIG. 1, a variable displacement swash plate compressor A 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. The swash plate 12 is connected to the rotor 11 through a linkage 13 to be variable in inclination relative to the driving shaft 10, thereby rotating synchronously with the rotating shaft 10.
[0027] A plurality of pistons 15 engage the swash plate 12 through a plurality of pairs of shoes 14 that slidably engage the outer peripheral portion of the swash plate 12. The pistons 15 are inserted into cylinder bores 16a formed in a cylinder block 16.
[0028] The plurality of pairs of shoes 14, the pistons 15 and ...
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A displacement control valve of a variable displacement swash plate compressor comprises a valve body provided with a valve shaft, a driver for applying driving force to the valve body, a tube-shaped valve chest accommodating the valve body to be capable of reciprocal movement and provided with a valve shaft inserting hole through which the valve shaft of the valve body is passed slidably at one end wall, an inlet hole at a circumferential wall and a valve hole which is opened and closed by the valve body at the other end. The inlet hole communicates with an outlet chamber of the compressor and the valve hole communicates with a crank chamber of the compressor. The inlet hole is directed at right angle to and disposed offset in the radial direction from the central axis of the valve chest.
Description
BACKGROUND OF THE INVENTION [0001] The present invention relates to a displacement control valve of a variable displacement swash plate compressor. [0002] Japanese Patent Laid-Open Publication No. 9-268973 discloses a displacement control valve of a variable displacement swash plate compressor comprising a valve body provided with a valve shaft, a driver for applying driving force to the valve body, a tube-shaped valve chest accommodating the valve body to be capable of reciprocal movement and provided with a valve shaft inserting hole through which the valve shaft of the valve body is passed slidably at one end wall, an inlet hole at a circumferential wall and a valve hole which is opened and closed by the valve body at the other end wall, wherein the inlet hole communicates with an outlet chamber of the compressor and the valve hole communicates with a crank chamber of the compressor. [0003] In the aforementioned displacement control valve, the valve body opens and closes the valv...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F01C1/00F04B27/08F04B1/26
CPCF04B27/1804F04B2027/1827F04B2027/1854F04B2027/1859
Inventor TAGUCHI, YUKIHIKO
Owner SANDEN CORP