Drain valve and valve arrangement

Patent metadata

Field	Value
Publication number	US-11806643-B2
Application number	US-201816491358-A
Country	US
Kind code	B2
Filing date	Mar 13, 2018
Priority date	Mar 14, 2017
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

A drain valve ( 10 ) includes a housing ( 11 ), a fluid inlet ( 12 ), a gas outlet ( 13 ) and at least one liquid outlet orifice ( 19 ) arranged in a liquid outlet member ( 20 ) of the housing ( 11 ). The drain valve ( 10 ) furthermore includes a float ( 16 ) connected to a lever ( 17 ) on a first end ( 18 ). The float ( 16 ) is arranged in a float chamber ( 15 ) of the housing ( 11 ). The float chamber ( 15 ) is connected to the fluid inlet ( 12 ), the gas outlet ( 13 ) and the at least one liquid outlet orifice ( 19 ). The liquid outlet orifice ( 19 ) may be opened or closed by a closing member ( 21 ) that is connected to a second end ( 22 ) of the lever ( 17 ) and is rotatably connected to the liquid outlet member ( 20 ).

First claim

What is claimed is:

1. A drain valve comprising a housing, a fluid inlet, a gas outlet, at least one liquid outlet orifice arranged in a liquid outlet member of the housing, a float and a lever connected at a first end to the float, wherein the float is arranged in a float chamber of the housing, and wherein the float chamber is connected to the fluid inlet, the gas outlet and the at least one liquid outlet orifice, and wherein the liquid outlet orifice may be opened or closed by a closing member that is connected to a second end of the lever and is rotatably connected to the liquid outlet member, wherein if a liquid is arranged in the float chamber a rise in the liquid level will result in a lift of the float whereby the closing member is rotated to a more open position of the at least one liquid outlet orifice and vice versa, wherein the liquid outlet member comprises a cylinder-like section and the closing member is arranged concentrically around the cylinder-like section, wherein the closing member comprises a closing element, wherein in the open valve position of the closing member the closing element converges towards the closest liquid outlet orifice that the closing element is matched to such that the surface of the closing element perpendicular to the liquid flow direction through the liquid outlet orifice is minimized, and the end of the liquid outlet orifice that is first exposed when the liquid outlet orifice is opened has the smallest width perpendicular to the opening direction of the closing element.

2. The drain valve according to claim 1 , wherein the closing element is a free end of the closing member.

3. The drain valve according to claim 1 , wherein the closing element has a knife-edge-like shape.

4. The drain valve according to claim 1 , wherein the closing member comprises at least one stop element that limits the rotation of the closing member around the liquid outlet member.

5. The drain valve according to claim 1 , wherein the closing member comprises at least two closing elements, and wherein the drain valve comprises at least two liquid outlet orifices each of which is opened or closed by one of the closing elements of the closing member.

6. The drain valve according to claim 5 , wherein the at least two liquid outlet orifices are arranged on opposite sides of the liquid outlet member.

7. The drain valve according to claim 1 , wherein the at least one liquid outlet orifice is arranged in the cylinder barrel of the cylinder-like section.

8. The drain valve according to claim 1 , wherein the housing comprises a common connector part through which the fluid inlet, the gas outlet and at least one liquid outlet connected to the at least one liquid outlet orifice are led.

9. The drain valve according to claim 1 , wherein the closing member comprises an engagement surface arranged on a side of the closing member opposite to the lever.

10. The drain valve according to claim 9 , wherein the drain valve comprises a manual opening mechanism that is structured and arranged to be operated from an outside of the valve housing to engage the engagement surface and thereby force the drain valve into a more open position of the liquid outlet orifice.

11. A valve arrangement comprising a valve module and a drain valve according claim 1 , wherein the drain valve is connected to the valve module by the fluid inlet, the gas outlet and the liquid outlet.

12. The valve arrangement according to claim 11 , wherein the valve module comprises at least two functional spaces, and wherein the gas outlet and the liquid outlet are connected to a first functional space and the fluid inlet is connected to a second functional space.

13. The valve arrangement according to claim 11 , wherein in that the drain valve is bottom mounted to the valve module such that when a liquid is present in the flow chamber the liquid will collect on the lower side of the float chamber opposite to the valve module.

14. The drain valve according to claim 2 , wherein the closing element has a knife-edge-like shape.

15. The drain valve according to claim 2 , wherein the closing member comprises at least one stop element that limits the rotation of the closing member around the liquid outlet member.

16. The drain valve according to claim 3 , wherein the closing member comprises at least one stop element that limits the rotation of the closing member around the liquid outlet member.

17. The drain valve according to claim 2 , wherein the closing member comprises at least two closing elements, and wherein the drain valve comprises at least two liquid outlet orifices each of which is opened or closed by one of the closing elements of the closing member.

18. The drain valve according to claim 3 , wherein the closing member comprises at least two closing elements, and wherein the drain valve comprises at least two liquid outlet orifices each of which is opened or closed by one of the closing elements of the closing member.

19. The drain valve according to claim 4 , wherein the closing member comprises at least two closing elements, and wherein the drain valve comprises at least two liquid outlet orifices each of which is opened or closed by one of the closing elements of the closing member.

20. The drain valve according to claim 2 , wherein the at least one liquid outlet orifice is arranged in the cylinder barrel of the cylinder-like section.

Assignees

• Danfoss As

Inventors

• Kulkarni Shrikant
• Gurumoorthy Rajendren
• Verma Giriraj
• Vestergaard Niels P

Classifications

• B01D19/0063 Primary

  Regulation, control including valves and floats (for construction and details of valves F16K) · CPC title

• B01D5/006

  with evaporation or distillation · CPC title

• F16K5/0442

  Spindles and actuating means · CPC title

• F16K31/265

  with a second lever or toggle between the pivoted arm and the valve · CPC title

• F16K31/30

  actuating a gate valve or sliding valve · CPC title