Valve system

Patent metadata

Field	Value
Publication number	US-10030641-B2
Application number	US-201514658762-A
Country	US
Kind code	B2
Filing date	Mar 16, 2015
Priority date	Mar 16, 2015
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A valve comprising a base plate defining an inlet and outlet passageway. A cover plate is disposed on the base plate and defines a first and second channel. A pressure plate is disposed on the base plate and includes a first anchoring portion, a first sealing portion, and a first biasing portion connecting the first anchoring portion and the first sealing portion. Furthermore, a suction plate is disposed on the base plate and includes a second anchoring portion, a second sealing portion, and a second biasing portion connecting the second anchoring portion to the second sealing portion. The valve is movable between a first configuration, where the first sealing portion is distal to first channel and the second sealing portion is proximal to inlet passageway, and a second configuration, in which the first sealing portion is proximal to first channel, and second sealing portion is distal to inlet passageway.

First claim

What is claimed is:

1. A pump, comprising:
a valve comprising:
a base plate defining an inlet passageway and an outlet passageway, the inlet passageway included in a suction portion of the valve and the outlet passageway included in a pressure portion of the valve,
a cover plate disposed over the base plate, the cover plate defining a first channel in the pressure portion and a second channel in the suction portion,
a pressure plate disposed on the base plate in the pressure portion, the pressure plate including a first anchoring portion, a first sealing portion, and a first biasing portion connecting the first anchoring portion and the first sealing portion,
a suction plate disposed on the base plate in the suction portion, the suction plate including a second anchoring portion, a second sealing portion, and a second biasing portion connecting the second anchoring portion and the second sealing portion,
a first sealing member positioned proximal to an outlet of the first channel, the first sealing member configured to form a first fluid tight seal with the first sealing portion in a second configuration, and
a second sealing member positioned at an inlet of the inlet passageway within the base plate, the second sealing member configured to form a second fluid tight seal with the second sealing portion in a first configuration; and

a membrane disposed on the cover plate, the membrane and the cover plate defining a chamber therebetween, the pressure portion and the suction portion in fluidic communication through the first channel and the second channel via the chamber,
wherein the pump is movable between the first configuration in which the membrane is proximal to the cover plate, the first sealing portion of the pressure plate is distal to the first channel such that a fluid is expelled from the chamber into the outlet passageway through the first channel and the second sealing portion of the suction plate is proximal to the inlet passageway and fluidly seals the inlet passageway, and the second configuration in which the membrane is distal to the cover plate, the first sealing portion is proximal to the first channel and fluidly seals the first channel, and the second sealing portion is distal to the inlet passageway such that the fluid is drawn into the chamber from the inlet passageway via the second channel.

2. The pump of claim 1 , wherein movement of the first sealing portion and the second sealing portion between the first configuration and the second configuration results in a flexing of the first biasing portion about the first anchoring portion, and a flexing of the second biasing portion about the second anchoring portion, respectively.

3. The pump of claim 2 , wherein movement of the membrane distal to the cover plate in the second configuration produces a negative pressure in the first channel and the second channel, the negative pressure moving the first sealing portion proximal to the first channel, the negative pressure also moving the second sealing portion distal from the inlet passageway, the movement of the second sealing portion allowing a fluid to be drawn into the suction portion via the inlet passageway.

4. The pump of claim 3 , wherein movement of the membrane proximal to the cover plate in the first configuration removes the negative pressure in the first channel, the removing allowing the first biasing portion to bend away from the first channel and move the first sealing portion distal from the first channel, the removing further allowing the second biasing portion to bend towards the inlet passageway and move the second sealing portion towards the inlet passageway to seal the inlet passageway, the movement of the first sealing portion allowing at least a portion of the fluid to be communicated from the chamber into the outlet passageway via the first channel.

5. The pump of claim 1 , wherein at least a portion of the cover plate between the first channel and the second channel defines a depression, the depression structured to form the chamber between the membrane and cover plate.

6. The pump of claim 1 , wherein a first cavity is defined in the base plate, the first sealing portion movable between the first configuration and the second configuration within the first cavity.

7. The pump of claim 6 , wherein a second cavity is defined in the cover plate, the second sealing portion movable between the first configuration and the second configuration within the second cavity.

8. The pump of claim 1 , wherein the valve further comprises:
a gasket disposed on the base plate, the gasket configured to divide the valve into the pressure portion and the suction portion.

9. An aftertreatment system, comprising:
a selective catalytic reduction system configured to receive an exhaust gas from an engine, the selective catalytic reduction system including at least one catalyst formulated to reduce the exhaust gas;
a storage tank configured to store an exhaust reductant for providing to the selective catalytic reduction system; and
the pump according to claim 1 , wherein the pump is fluidly coupled to the storage tank and the selective catalytic reduction system and configured to pump the exhaust reductant from the storage tank to the selective catalytic reduction system.

10. The aftertreatment system of claim 9 , wherein movement of the membrane distal to the cover plate in the second configuration produces a negative pressure in the first channel and the second channel, the negative pressure moving the first sealing portion proximal to the first channel, the negative pressure also moving the second sealing portion distal from the inlet passageway, the movement of the second sealing portion allowing a fluid to be drawn into the suction portion via the inlet passageway.

11. The aftertreatment system of claim 10 , wherein movement of the membrane proximal to the cover plate in the first configuration removes the negative pressure in the first channel, the removing allowing the first biasing portion to bend away from the first channel and move the first sealing portion distal from the first channel, the removing further allowing the second biasing portion to bend towards the inlet passageway and move the second sealing portion towards the inlet passageway to seal the inlet passageway, the movement of the first sealing portion allowing at least a portion of the fluid to be communicated from the chamber into the outlet passageway via the first channel.

Assignees

• Cummins Emission Solutions Inc

Inventors

• Hinze Dirk
• Schmidt Kay
• Betz Thomas

Classifications

• F01N2610/02

  the substance being ammonia or urea · CPC title

• F16K15/14

  with flexible valve members · CPC title

• F01N3/2066 Primary

  Selective catalytic reduction [SCR] · CPC title

• F16K15/16

  with tongue-shaped laminae · CPC title

• F04B53/1055

  more than two flexible elements oscillating around a fixed point · CPC title