Pressure operable device for an integrated pressure management apparatus

• US 6,470,908 B1
• Filed: 04/05/2000
• Issued: 10/29/2002
• Est. Priority Date: 11/19/1999
• Status: Expired due to Fees

• Current Assignee: Siemens Canada Limited (Siemens AG)
• Original Assignee: Siemens Canada Limited (Siemens AG)
• Inventors: Perry, Paul D.
• Primary Examiner(s): RIVELL, JOHN A
• Application Number:
  US09/543,748
• Time in Patent Office: 937 Days
• Field of Search: 123/516, 123/518, 123/519, 123/520, 137/493, 137/494, 137/495, 137/493.9, 137/560, 251/65, 251/129.15, 200/83.Q, 200/61.86
• US Class Current: 137/494
• CPC Class Codes: F02M 25/0809 Judging failure of purge control system
• CPC Class Codes: F02M 25/0836 Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
• CPC Class Codes: F02M 25/0854 Details of the absorption canister
• CPC Class Codes: F16K 24/00 Devices, e.g. valves, for venting or aerating enclosures equalising valves F16K17/00; arrangement or mounting in pipes or pipe systems F16L55/07; venting or aerating as an additional function of steam traps or like apparatus F16T; ventilation of rooms, vehicles, see the appropriate subclass, e.g. F24F
• CPC Class Codes: F16K 31/0655 Lift valves
• CPC Class Codes: F16K 31/0672 the valve member being a diaphragm
• CPC Class Codes: F16K 31/365 the fluid acting on a diaphragm
• CPC Class Codes: Y10T 137/7771 Bi-directional flow valves
• CPC Class Codes: Y10T 137/7781 With separate connected fluid reactor surface
• CPC Class Codes: Y10T 137/7782 With manual or external control for line valve

Abstract

A pressure operable device for an integrated pressure management apparatus. The pressure operable device includes a poppet moving between a first configuration permitting fluid communication between first and second ports of the integrated pressure management apparatus, and a second configuration preventing fluid communication between the first and second ports. A spring biases the poppet toward the second configuration, and a diaphragm operably engages the poppet to move the poppet toward the first configuration.

Claims

1. A pressure operable device for an integrated pressure management apparatus having first and second fluid ports in fluid communication with an interior chamber, the pressure operable device comprising:

a poppet movable between first and second configurations, the first configuration being adapted for permitting fluid communication between the first and second ports, and the second configuration being adapted for fluidly isolating the first and second ports from each other;

a spring biasing the poppet toward the second configuration; and

a diaphragm operably engaging the poppet to move the poppet toward the first configuration, the diaphragm adapted to separate a signal chamber in fluid communication with the first port from an interior chamber portion in fluid communication with the second port.

2. The pressure operable device according to claim 1, wherein the poppet has a first port side and a second port side, the spring operably engaging the first port side and the diaphragm operably engaging the second port side.

3. A pressure operable device for an integrated pressure management apparatus having first and second fluid ports in fluid communication with an interior chamber, the pressure operable device comprising:

a poppet movable between first and second configurations, the first configuration being adapted for permitting fluid communication between the first and second ports, and the second configuration being adapted for fluidly isolating the first and second ports from each other, a negative pressure at the first port that is below a first pressure level displacing the poppet to the first configuration;

a spring biasing the poppet toward the second configuration; and

a diaphragm operably engaging the poppet to move the poppet toward the first configuration.

4. The pressure operable device according to claim 3, wherein a biasing force of the spring is substantially equal to a biasing force of the negative pressure at the first pressure level acting on the poppet.

5. The pressure operable device according to claim 3, wherein a positive pressure at the first port that is above a second pressure level displaces the diaphragm and the poppet against the spring bias to the first configuration.

6. The pressure operable device according to claim 5, wherein a biasing force of the spring is substantially equal to a biasing force of the positive pressure at the second pressure level acting on the diaphragm less and a biasing force of the positive pressure at the second pressure level acting on the poppet.

7. The pressure operable device according to claim 5, wherein the diaphragm occludes a first area and the poppet occludes a second area, and a first force produced by the pressure at the second pressure level acting on the first area overcomes a sum of the spring bias and a second force produced by the pressure at the second pressure level acting on the second area.

8. A pressure operable device for an integrated pressure management apparatus having first and second fluid ports in fluid communication with an interior chamber, the pressure operable device comprising:

a poppet movable between first and second configurations, the first configuration being adapted for permitting fluid communication between the first and second ports, and the second configuration being adapted for fluidly isolating the first and second ports from each other, the poppet occluding a second area;

a spring biasing the poppet toward the second configuration; and

a diaphragm operably engaging the poppet to move the poppet toward the first configuration, the diaphragm occluding a first area, a ratio of the first area to the second area greater than 9.5.