Patent ID: 9683479
Date: 2017-06-20
CPC Classifications: F01P

Claim:
1. A safety cap device for controlling a pressure in a radiator of a cooling system for a vehicle, the device comprising: a valve seat having a valve receiving space therein and a first communicating hole formed in the valve receiving space; a negative pressure valve provided movably in a vertical direction inside the first communicating hole; a seal disposed on a receiving surface of the valve seat in the valve receiving space and disposed movably with the negative pressure valve, the seal having a second communicating hole which is formed at a central portion of the seal and communicates with the first communicating hole; a positive pressure valve disposed on the seal and having a third communicating hole which is formed at a central portion of the positive pressure valve and communicates with the second communication hole; a cap covering an upper portion of the valve seat; a spring interposed between the positive pressure valve and the cap; and a fluid receiving part provided in the valve seat to prevent cavitation from being generated when an internal fluid expands, wherein the fluid receiving part includes a receiving space for receiving the internal fluid and moving together with the negative pressure valve, and wherein the fluid receiving part includes a foam part collecting air bubbles, and the foam part is disposed in the receiving space of the fluid receiving part.