초록 ▼

A control valve in a compressor that adjusts the discharge displacement based on controlling of an inclination of a cam plate. The compressor includes a supply passage for connecting a discharge chamber with a crank chamber. The control valve is placed midway on the supply passage. The control valve

A control valve in a compressor that adjusts the discharge displacement based on controlling of an inclination of a cam plate. The compressor includes a supply passage for connecting a discharge chamber with a crank chamber. The control valve is placed midway on the supply passage. The control valve has a valve body. The valve body moves in a first direction to open the supply passage and moves in the second direction to close the supply passage. A reacting member reacts to suction pressure. A first transmitting member is placed between the reacting member and the valve body. A solenoid is opposed to the reacting member with respect to the valve body. The solenoid urges the valve body in the second direction via a second transmitting member when the solenoid is excited. An urging device urges the valve body in the first direction, The first transmitting member connects the reacting member with the valve body to move the valve body toward or away from the reacting member. The urging device causes the valve body to fully open the supply passage when the solenoid is de-exited.

대표청구항 ▼

[ What is claimed is:] [1.] A control valve in a variable displacement compressor that adjusts the discharge displacement by controlling an inclination of a cam plate located in a crank chamber, wherein said compressor includes a piston operably coupled to the cam plate and located in a cylinder bor

[ What is claimed is:] [1.] A control valve in a variable displacement compressor that adjusts the discharge displacement by controlling an inclination of a cam plate located in a crank chamber, wherein said compressor includes a piston operably coupled to the cam plate and located in a cylinder bore, said piston compressing gas supplied to the cylinder bore from a first area and discharging the compressed gas to a second area, the inclination of the cam plate is variable based on the pressure in the crank chamber, and a supply passage for connecting the second area with the crank chamber, wherein said control valve is placed midway on the supply passage for adjusting the amount of the gas introduced into the crank chamber from the second area through the supply passage to control the pressure in the crank chamber, said control valve comprising:a valve body for adjusting the opening size of the supply passage, said valve body moves in a first direction and a second direction opposite to the first direction, wherein said valve body moves in the first direction to open the supply passage, and wherein said valve body moves in the second direction to close the supply passage;a reacting member for reacting to the pressure in the first area;a first transmitting member placed between the reacting member and the valve body, wherein said reacting member allows the valve body to move in the second direction via the first transmitting member when the pressure in the first area is raised;a solenoid opposed to the reacting member with respect to the valve body;a second transmitting member placed between the solenoid and the valve body, wherein said solenoid urges the valve body in the second direction via the second transmitting member when the solenoid is excited;means for urging the valve body in the first direction; andsaid first transmitting member connecting the reacting member with the valve body to move the valve body toward or away from the reacting member, whereby said urging means causes the valve body to fully open the supply passage when the solenoid is de-excited and said first transmitting member prevents said reacting member from moving the valve body in the second direction when the solenoid is de-excited.