VARIABLE-CAPACITY COMPRESSOR CONTROL VALVE AND METHOD FOR ASSEMBLING THE SAME
First Claim
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1. A variable-capacity compressor control valve comprising:
- a valve body including a valve chamber with a valve orifice, a Ps inlet/outlet port communicating with a suction chamber of a compressor, a Pd introduction port arranged upstream of the valve orifice and communicating with a discharge chamber of the compressor, and a Pc inlet/outlet port arranged downstream of the valve orifice and communicating with a crank chamber of the compressor;
a valve element adapted to open or close the valve orifice;
an electromagnetic actuator including a plunger and adapted to move the valve element in a direction to open or close the valve orifice;
a pressure-sensitive chamber adapted to receive a suction pressure Ps from the compressor via the Ps inlet/outlet port; and
a pressure-sensitive reaction member arranged in the pressure-sensitive chamber and adapted to urge the valve element in the direction to open or close the valve orifice in accordance with a pressure in the pressure-sensitive chamber,wherein;
the electromagnetic actuator includes a cylindrical stator, an attractor, and the plunger arranged in series on an inner peripheral side of a coil,a closure member adapted to close an opening of the stator on a side opposite to the attractor is press-fitted into the opening in a contracting and expanding direction of the pressure-sensitive reaction member and welded therein so as to form the pressure-sensitive chamber on an inner peripheral side of the stator, andthe stator and the attractor are integrally molded.
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Abstract
Provided are a variable-capacity compressor control valve with a reduced number of component machining steps, a reduced machining cost, a reduced number of components, and a reduced number of assembly steps as well as reduced sizes of components, and with a simple configuration that can adjust the bellows attachment length and can secure airtightness, and a method for assembling such a control valve. A closure member, which is adapted to close an upper-portion opening of a cylindrical stator on the side opposite to an attractor, is press-fitted into the upper-portion opening and welded therein.
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8 Claims
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1. A variable-capacity compressor control valve comprising:
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a valve body including a valve chamber with a valve orifice, a Ps inlet/outlet port communicating with a suction chamber of a compressor, a Pd introduction port arranged upstream of the valve orifice and communicating with a discharge chamber of the compressor, and a Pc inlet/outlet port arranged downstream of the valve orifice and communicating with a crank chamber of the compressor; a valve element adapted to open or close the valve orifice; an electromagnetic actuator including a plunger and adapted to move the valve element in a direction to open or close the valve orifice; a pressure-sensitive chamber adapted to receive a suction pressure Ps from the compressor via the Ps inlet/outlet port; and a pressure-sensitive reaction member arranged in the pressure-sensitive chamber and adapted to urge the valve element in the direction to open or close the valve orifice in accordance with a pressure in the pressure-sensitive chamber, wherein; the electromagnetic actuator includes a cylindrical stator, an attractor, and the plunger arranged in series on an inner peripheral side of a coil, a closure member adapted to close an opening of the stator on a side opposite to the attractor is press-fitted into the opening in a contracting and expanding direction of the pressure-sensitive reaction member and welded therein so as to form the pressure-sensitive chamber on an inner peripheral side of the stator, and the stator and the attractor are integrally molded. - View Dependent Claims (4, 5, 6)
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2. (canceled)
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3. (canceled)
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7. A method for assembling a variable-capacity compressor control valve, the variable-capacity compressor control valve including
a valve body including a valve chamber with a valve orifice, a Ps inlet/outlet port communicating with a suction chamber of a compressor, a Pd introduction port arranged upstream of the valve orifice and communicating with a discharge chamber of the compressor, and a Pc inlet/outlet port arranged downstream of the valve orifice and communicating with a crank chamber of the compressor; -
a valve element adapted to open or close the valve orifice; an electromagnetic actuator including a plunger and adapted to move the valve element in a direction to open or close the valve orifice; a pressure-sensitive chamber adapted to receive a suction pressure Ps from the compressor via the Ps inlet/outlet port; and a pressure-sensitive reaction member arranged in the pressure-sensitive chamber and adapted to urge the valve element in the direction to open or close the valve orifice in accordance with a pressure in the pressure-sensitive chamber, wherein; the electromagnetic actuator includes a cylindrical stator, an attractor, and the plunger arranged in series on an inner peripheral side of a coil, and the pressure-sensitive chamber in which the pressure-sensitive reaction member is arranged is formed on an inner peripheral side of the stator, the method comprising; arranging the pressure-sensitive reaction member on the inner peripheral side of the stator through an opening of the stator on a side opposite to the attractor; adjusting an attachment length of the pressure-sensitive reaction member while press-fitting a closure member adapted to close the opening into the opening; and welding the closure member in the opening and thus fixing the closure member.
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8. (canceled)
Specification