Capacity control valve

2:

• The capacity control valve according to claim 1, wherein
• the control port communicates with a space which is opened and closed by the main valve.

3:

• The capacity control valve according to claim 1, wherein
• the CS valve includes a cylindrical CS valve element, and a spring configured to bias the CS valve element in a valve opening direction of the CS valve.

4:

• The capacity control valve according to claim 3, wherein
• the CS valve element has a receiving surface extending in a radial direction to receive the dynamic pressure.

5:

• The capacity control valve according to claim 4, wherein
• the CS valve element has a first end surface portion and a second end surface portion on an axially opposite side of the first end surface portion, the first end surface portion is brought into contact with and separated from a CS valve seat formed in the valve housing, and, when biased in the valve opening direction of the CS valve, the second end surface portion is abutted with an inner surface of the valve housing.

6:

• The capacity control valve according to claim 1, wherein
• the CS valve also serves as a differential pressure valve provided between the suction pressure and the control pressure.

7:

• The capacity control valve according to claim 1, further comprising:
• a pressure drive valve configured to be opened and closed by the suction pressure, wherein
• an intermediary communication passage is formed in the main valve element and capable of providing a communication between the control port and the suction port in accordance with an operation of the pressure drive valve.

8:

• The capacity control valve according to claim 7, wherein
• the valve housing is provided with another suction port which forms a flow passage to be opened and closed by the pressure drive valve.

9:

• The capacity control valve according to claim 2, wherein
• the CS valve includes a cylindrical CS valve element, and a spring configured to bias the CS valve element in a valve opening direction of the CS valve.

10:

• The capacity control valve according to claim 9, wherein
• the CS valve element has a receiving surface extending in a radial direction to receive the dynamic pressure.

11:

• The capacity control valve according to claim 10, wherein
• the CS valve element has a first end surface portion and a second end surface portion on an axially opposite side of the first end surface portion, the first end surface portion is brought into contact with and separated from a CS valve seat formed in the valve housing, and, when biased in the valve opening direction of the CS valve, the second end surface portion is abutted with an inner surface of the valve housing.

12:

• The capacity control valve according to claim 2, wherein
• the CS valve also serves as a differential pressure valve provided between the suction pressure and the control pressure.

13:

• The capacity control valve according to claim 2, further comprising:
• a pressure drive valve configured to be opened and closed by the suction pressure, wherein
• an intermediary communication passage is formed in the main valve element and capable of providing a communication between the control port and the suction port in accordance with an operation of the pressure drive valve.

14:

• The capacity control valve according to claim 13, wherein
• the valve housing is provided with another suction port which forms a flow passage to be opened and closed by the pressure drive valve.

15:

• The capacity control valve according to claim 3, wherein
• the CS valve also serves as a differential pressure valve provided between the suction pressure and the control pressure.

16:

• The capacity control valve according to claim 3, further comprising:
• a pressure drive valve configured to be opened and closed by the suction pressure, wherein
• an intermediary communication passage is formed in the main valve element and capable of providing a communication between the control port and the suction port in accordance with an operation of the pressure drive valve.

17:

• The capacity control valve according to claim 16, wherein
• the valve housing is provided with another suction port which forms a flow passage to be opened and closed by the pressure drive valve.

18:

• The capacity control valve according to claim 4, wherein
• the CS valve also serves as a differential pressure valve provided between the suction pressure and the control pressure.

19:

• The capacity control valve according to claim 4, further comprising:
• a pressure drive valve configured to be opened and closed by the suction pressure, wherein
• an intermediary communication passage is formed in the main valve element and capable of providing a communication between the control port and the suction port in accordance with an operation of the pressure drive valve.

20:

• The capacity control valve according to claim 19, wherein
• the valve housing is provided with another suction port which forms a flow passage to be opened and closed by the pressure drive valve.