| 摘要 |
There is provided a control valve for a variable capacity compressor, which is applicable to a compressor of large capacity. This control valve comprises a valve main body ( 20 ) equipped with a valve rod ( 15 ) having a valve body ( 15 a), with a valve chamber ( 21 ) having a guide hole ( 19 ) in which the valve rod is enabled to slide and a valve aperture ( 22 ) for the valve body, with a cooling medium inlet port ( 25 ) disposed on an upstream side of the valve aperture for introducing a cooling medium from the compressor, and with a cooling medium outlet port ( 26 ) disposed on a downstream side of the valve aperture and communicated with a crank chamber; an electromagnetic actuator ( 30 ) for driving the valve rod to move in the direction of opening or closing the valve aperture; and a pressure sensitive moving member ( 40 ) for driving the valve rod to move in response to a sucking pressure of the compressor; which is characterized in that a contracted hole portion is formed at an upper portion of the guide hole, that a diametrally reduced rod portion ( 15 b) to be inserted into the contracted hole portion ( 19 b) is formed at an upper portion of the valve rod, and that the valve rod is provided with an equalizing hole ( 51 ) for introducing a cooling medium pressure of the cooling medium outlet port into an equalizing pressure introducing chamber ( 52 ).
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