ANTIFREEZING LIQUID LEVEL REGULATING CONTROL

• US 3,586,017 A
• Filed: 12/16/1968
• Issued: 06/22/1971
• Est. Priority Date: 12/16/1968
• Status: Expired due to Term

• Current Assignee: William R. Walters
• Original Assignee: William R. Walters
• Inventors: Walters, William R.
• Application Number:
  US04/784,002
• Time in Patent Office: 918 Days
• US Class Current: 137/59
• CPC Class Codes: A01K 7/02 Automatic devices ; Medication dispensers
• CPC Class Codes: A01K 7/027 Drinking equipment with water heaters, coolers or means for preventing freezing
• CPC Class Codes: F16K 21/18 closed when a rising liquid reaches a predetermined level float-actuated valves F16K31/18
• CPC Class Codes: G05D 9/02 without auxiliary power
• CPC Class Codes: Y10T 137/1189 Freeze condition responsive safety systems
• CPC Class Codes: Y10T 137/7297 With second diverse control
• CPC Class Codes: Y10T 137/7339 By weight of accumulated fluid

Abstract

A water level controlling apparatus submerged within a water receptacle for conducting water under pressure into the receptacle in order to maintain a predetermined level of water therein. A limited amount of additional water is admitted to the receptacle under control of a temperature sensor in order to prevent freezing of the water.

Claims

2. The combination of claim 1 wherein the valve-controlled biasing means for the flow control device comprises a pressure chamber within the housing into which a restricted flow of liquid is conducted through the pressure responsive valve means, and pressure controlling valve means operatively connected to the bias control means for opening and blocking fluid communication between the receptacle and the pressure chamber, the pressure of the liquid developed within the pressure chamber being exerted on the pressure responsive valve means as the closing bias.

3. The combination of claim 2 wherein said bias controL means comprises a source of compressible fluid under pressure, and differential pressure means exposed to the pressures of said compressible fluid and the liquid within the receptacle for displacing the pressure controlling valve means between positions opening and blocking fluid communication.

4. The combination of claim 3 wherein the temperature responsive control means comprises a valve displacing device engageable with the associated second flow control device for admitting liquid from the source into the receptacle, and a sensing element located adjacent the predetermined level of the liquid and connected to the valve displacing device.

5. The combination of claim 1 wherein the temperature responsive control means comprises a valve displacing device engageable with the associated second flow control device for admitting liquid from the source into the receptacle, and a sensing element located adjacent the predetermined level of the liquid and connected to the valve displacing device.

6. In combination with a receptacle storing liquid supplied thereto from a source of liquid under pressure, a liquid level controlling apparatus submerged within the liquid comprising an inlet conduit connected to said source, a flow control device connected to the inlet conduit for controlling flow of liquid from the source into the receptacle, bias control means connected to the flow control device for opening the same in response to a decrease in liquid in the receptacle below a predetermined level, a second flow control device for conducting liquid from the inlet conduit into the receptacle and temperature responsive control means operatively connected to the second flow control device for preventing flow therethrough until the temperature of the liquid within the receptacle reaches a predetermined limit.

7. In combination with a receptacle storing fluid supplied thereto from a pressurized source, a storage volume controlling apparatus comprising an inlet conduit connected to the source, a flow control device connected to the inlet conduit for controlling inflow of fluid into the receptacle, means connected to the flow control device for opening the same in response to a decrease in volume of the fluid in the receptacle below a predetermined minimum, a second flow control device for conducting fluid from the source into the receptacle and temperature responsive control means operatively connected to the second flow control device for preventing flow therethrough until the temperature of the fluid within the receptacle reaches a predetermined limit.