초록 ▼

The temperature controlled valve mechanism herein comprises a valve housing, a valve inlet in the housing for connection with a fluid source, a valve outlet in the housing for draining fluid from the housing and a valve closure member supported for movement toward and away from the valve outlet betw

The temperature controlled valve mechanism herein comprises a valve housing, a valve inlet in the housing for connection with a fluid source, a valve outlet in the housing for draining fluid from the housing and a valve closure member supported for movement toward and away from the valve outlet between closed and opened positions. The valve closure member blocks and closes the valve outlet when it is in the closed position. A biasing spring is provided for urging the valve closure member away from the closed position. An expansion chamber is formed within the housing. Apparatus for introducing a pressure into the expansion chamber is provided for moving the closure member to a closed position against the force of the biasing spring upon entry of a pressurized medium into the expansion chamber. A temperature-activated venting mechanism for venting and depressurizing the expansion chamber upon occurrence of a predetermined temperature drop is provided. Such temperature-activated venting system vents the pressurized medium from the expansion chamber causing the biasing spring to rapidly move the valve closure member from the closed position, whereupon the valve mechanism is opened. When the valve mechanism is thusly opened, the fluid within the system is drained from the system.

대표청구항 ▼

A temperature controlled valve mechanism transportable as a single unit comprising: a single valve housing; a valve inlet in the housing for connection to a fluid source; a valve outlet in the housing for draining fluid from the housing; a valve closure member supported in the housing for movement b

A temperature controlled valve mechanism transportable as a single unit comprising: a single valve housing; a valve inlet in the housing for connection to a fluid source; a valve outlet in the housing for draining fluid from the housing; a valve closure member supported in the housing for movement between closed and open positions, the valve closure member blocking and closing the valve outlet when in its closed position; biasing means in the housing for urging the valve closure member away from its closed position; means forming an expansion chamber in the housing, including means for moving the closure member to its closed position against the force of the biasing means upon entry of a pressurized medium into the expansion chamber; and temperature activated venting means including a temperature responsive actuator in the housing for venting and depressurizing the expansion chamber upon occurrence of a temperature drop to a predetermined temperature, such venting of the expansion chamber causing the biasing means to rapidly move the valve closure member from its closed position whereby the valve mechanism is opened.