초록 ▼

A liquid level control system is disclosed for use with a swimming pool or the like having a pool reservoir, a main drain or outlet, usually at the bottom of the reservoir, and an outlet located at a predetermined water maintenance level for the pool. The system includes fluid amplifier means positi

A liquid level control system is disclosed for use with a swimming pool or the like having a pool reservoir, a main drain or outlet, usually at the bottom of the reservoir, and an outlet located at a predetermined water maintenance level for the pool. The system includes fluid amplifier means positioned relative to the pool reservoir for sensing an interface between liquid and gas, or water and air, at the surface of the water in the pool and developing a fluid pressure signal when the interface falls below a predetermined level. Liquid circulation means, including a skimmer at the surface of the water in the pool reservoir is provided for circulating water from the pool reservoir between the outlet and an inlet. A portion of the water circulated by the circulation means is channeled to the fluid amplifier means for operating the same. Fluid valve means is provided which is responsive to the fluid pressure signal developed by the fluid amplifier means. The system further includes water supply means for adding water to the pool from an external supply thereof when the fluid valve means senses the fluid pressure signal developed by the fluid amplifier means.

대표청구항 ▼

A liquid level control system for use with a swimming pool or the like, comprising: a pool reservoir; outlet means from the pool reservoir; inlet means to the pool reservoir; water circulation means between said outlet means and said inlet means; means including a fluid amplifier positioned relative

A liquid level control system for use with a swimming pool or the like, comprising: a pool reservoir; outlet means from the pool reservoir; inlet means to the pool reservoir; water circulation means between said outlet means and said inlet means; means including a fluid amplifier positioned relative to said pool reservoir in communication with said water circulation means for sensing an interface between liquid and gas at the surface level of water in said pool reservoir, said interface sensing means producing a fluid pressure signal when said interface falls below a predetermined water level; means including a fluid valve which is responsive to said signal produced by said interface sensing means, said signal responsive means being normally closed in an inoperative position and movable to an operative open position when said fluid pressure signal is produced by said interface sensing means; and means associated with said signal responsive means for supplying water from an external water supply to said reservoir when said signal responsive means is moved to said operative position.