High performance diverter valve

• US 5,937,903 A
• Filed: 10/15/1997
• Issued: 08/17/1999
• Est. Priority Date: 10/15/1997
• Status: Expired due to Term

• Current Assignee: Pac-Fab Incorporated
• Original Assignee: Pac-Fab Incorporated
• Inventors: Bazargan, Afshin, Afshar, Reza
• Primary Examiner(s): Ferensic, Denise L.
• Assistant Examiner(s): FARID, RAMYAR M
• Application Number:
  US08/950,813
• Time in Patent Office: 671 Days
• Field of Search: 137/597, 137/625.46, 137/625.47, 210/169, 210/424, 210/425, 210/278
• US Class Current: 137/625.46
• CPC Class Codes: F16K 11/0856 having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug
• CPC Class Codes: Y10T 137/86863 Rotary valve unit
• CPC Class Codes: Y10T 137/87249 Multiple inlet with multiple outlet

Abstract

A diverter valve having a valve body with five ports. A valve assembly is disposed in the valve body and is rotatable between first and second positions. When the valve assembly is in the first position, fluid flows between aligned first and second ports by travelling axially through a cylindrical diverter gate, and fluid flows between aligned third and fourth ports by travelling axially through a generally cylindrical blocking gate. A fifth port is blocked by a waste seal. When the diverter valve is in the second position, the fifth port is open and a blocking projection on the blocking gate closes the fourth port. The blocking gate and the diverter gate direct fluid from the first port to the third port, and from the second port to the fifth port.

Claims

1. A diverter valve for connection into a conditioning system for a fluid source, said conditioning system including a conditioning apparatus, said diverter valve comprising:

a valve body including;

axially aligned first and second ports disposed on opposing sides of the valve body, said first port being for connection to the fluid source and said second port being for connection to the conditioning apparatus;

axially aligned third and fourth ports disposed on opposing sides of the valve body, said third port being for connection to the conditioning apparatus; and

a fifth port; and

a valve assembly disposed inside the valve body, said valve assembly directing fluid through the valve body and being rotatably movable between a first position and a second position, said valve assembly having first and second gates defining linear passages for respectively connecting said first and second ports and said third and fourth ports when said valve assembly is in the first position, said second gate being generally cylindrical, and wherein the first and second linear passages extend axially through the first and second gates, respectively, wherein said second gate comprises a blocking projection extending outwardly from said second gate to cover the fourth port when the valve assembly is in the second position;

wherein when the diverter valve is connected into the conditioning system and the valve assembly is in the first position, fluid enters the first port, exits the second port, passes through the conditioning apparatus, enters the third port and exits the fourth port; and

wherein when the diverter valve is connected into the conditioning system and the valve assembly is in the second position, fluid enters the first port, exits the third port, passes through the conditioning apparatus, enters the second port, and exits the fifth port.

2. The diverter valve of claim 1 wherein the fifth port is disposed at a substantially right angle to the first and second ports, and to the third and fourth ports.

3. The diverter valve of claim 1 wherein the conditioning system comprises a filter system and wherein the conditioning apparatus comprises a filter apparatus.

4. The diverter valve of claim 3 wherein when the diverter valve is connected into the filter system and the valve assembly is in the first position, the diverter valve directs fluid through the filter apparatus such that the fluid is filtered by the filter apparatus;

and

wherein when the diverter valve is connected into the conditioning system and the valve assembly is in the second position, the diverter valve directs fluid through the filter apparatus such that the fluid backwashes the filter apparatus.

5. The diverter valve of claim 1 wherein the valve assembly further comprises a stop gate covering the fifth port when the valve assembly is in the first position.

6. The diverter valve of claim 1 wherein the first and second gates cooperate to define a passage connecting the first and third ports when the valve assembly is in the second position.

7. A valve for directing fluid, said valve comprising:

a valve body including;

aligned first and second ports disposed on opposing sides of the valve body; and

aligned third and fourth ports disposed on opposing sides of the valve body; and

a valve assembly disposed inside the valve body, said valve assembly directing fluid through the valve body and being movable between a first position and a second position, said valve assembly including;

a first gate defining a first linear passage connecting the first and second ports when the valve assembly is in the first position;

said first gate compromising a generally cylindrical body having oppositely directed upper and lower deflector plates extending therefrom, said upper and lower deflector plates helping direct fluid from the first port to the third port when the valve assembly is in the second position and

a second gate defining a second linear passage connecting the third and fourth ports when the valve assembly is in the first position, said second gate being generally cylindrical, and wherein the first and second linear passages extend axially through the first and second gates, respectively.

8. The valve of claim 7 wherein the valve body further comprises a fifth port.

9. The valve of claim 7 wherein the valve assembly is rotatable between the first and second positions.

10. The valve of claim 8 wherein the second and third ports are connected to a filter apparatus of a fluid filtering system;

and

wherein when the second and third ports are connected to the filter apparatus and the valve assembly is in the first position, fluid enters the first port, exits the second port, passes through the filter apparatus in a forward direction, enters the third port and exits the fourth port, thereby filtering the fluid; and

wherein when the second and third ports are connected to the filter apparatus and the valve assembly is in the second position, fluid enters the first port, exits the third port, passes through the filter apparatus in a reverse direction, enters the second port, and exits the fifth port, thereby backwashing the filter apparatus.

11. The valve of claim 8 further comprising a stop gate covering the fifth port when the valve assembly is in the first position.

12. The valve of claim 11 further comprising:

a first shaft connecting the first gate to the second gate; and

a second shaft connecting the first gate to the stop gate.

13. The valve of claim 7 wherein the first and second ports are located above the fifth port and below the third and fourth ports.

16. The valve of claim 11 wherein the second gate comprises a generally cylindrical body having a blocking projection extending therefrom, said blocking projection covering the fourth port when the valve assembly is in the second position;

and

wherein the second passage extends axially through the body of the second gate.

14. A valve for directing fluid, said valve comprising:

a valve body having first, second, third, fourth, and fifth ports; and

a valve assembly disposed inside the valve body, said valve assembly directing fluid through the valve body and being movable between a first position and a second position, said valve assembly including;

a first gate having a first passage extending therethrough, said first passage connecting the first and second ports when the valve assembly is in the first position;

said first gate comprising a generally cylindrical body having oppositely directed upper and lower deflector plates helping direct fluid from the first port to the third port when the valve assembly is in the second position;

a second gate having a second passage extending therethrough, said second passage connecting the third and fourth ports when the valve assembly is in the first position;

a stop gate covering the fifth port when the valve assembly is in the first position;

a first shaft connecting the first gate to the second gate; and

a second shaft connecting the first gate to the stop gate.

15. The valve of claim 14 wherein the valve body and the first and second gates are composed of plastic.