Reversing valve

Patent metadata

Field	Value
Publication number	US-10697675-B2
Application number	US-201816027476-A
Country	US
Kind code	B2
Filing date	Jul 5, 2018
Priority date	Mar 23, 2012
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A reversing valve comprising a valve body having an internal cavity therein and an input port, output port and first and second reversing ports. A baffle is located within the internal cavity and is configured to rotate around a pivot point within the internal cavity. At least one electromagnet is coupled to the valve body. The electromagnet is configured to cause the baffle to rotate in one of the clockwise direction or counter-clock wise direction when a voltage is applied to the electromagnet.

First claim

What is claimed is:

1. A reversing valve, comprising:
a valve body that includes:
an internal cavity therein;
an input port;
output port;
a first reversing port;
a second reversing port, wherein the input port, the output port, the first reversing port and the second reversing port are all in fluid communication with the internal cavity; and
a baffle located within the internal cavity, wherein:
the baffle is configured to rotate around a pivot point within the internal cavity, wherein ends of the baffle contact interior walls of the valve body when the baffle rotates about the pivot point in a clockwise direction; and
the ends of the baffle contact different interior walls of the valve body when the baffle rotates about the pivot point in a counter-clock wise direction;

at least one electromagnet coupled to the valve body;
responsive to a voltage being applied to the at least one electromagnet, the at least one electromagnet rotates the baffle in a first direction;
the pivot point is connected to a torsion spring concentric to the pivot point; and
the torsion spring is configured to rotate the baffle in a direction opposite the first direction.

2. The reversing valve of claim 1 , wherein the input port and the output port are located opposite one another on the valve body.

3. The reversing valve of claim 1 , wherein at least one interior wall includes recesses, each recess is configured such that a portion of a major surface of the baffle near one of the ends of the baffle contacts the recess to stop the baffle rotation and forms a fluid seal between the baffle and the at least one interior wall.

4. The reversing valve of claim 1 , wherein a gap distance between outer edges of the baffle and the interior walls is about ⅛ inch or less.

5. The reversing valve of claim 1 , wherein at least an outer edge of the baffle is covered with a pliable material that contacts the interior walls.

6. The reversing valve of claim 1 , wherein the internal cavity of the valve body is covered with a pliable material.

7. The reversing valve of claim 1 , wherein the baffle is substantially composed of a ferromagnetic material.

8. The reversing valve of claim 1 , wherein the baffle is substantially composed of a non-ferromagnetic material and further includes a ferromagnetic material attached thereto.

9. The reversing valve of claim 1 , the first reversing port and the second reversing port are located opposite one another on the valve body.

10. The reversing valve of claim 1 , wherein the pivot point is substantially offset from a center of the internal cavity along a central axis along the input port and the output port.

11. The reversing valve of claim 1 , wherein:
the at least one electromagnet comprises a first electromagnet and a second electromagnet;
the second electromagnet is coupled to the valve body; and
responsive to the voltage being applied to the second electromagnet and no voltage being applied to the first electromagnet, the second electromagnet rotates the baffle in a direction opposite the first direction.

12. The reversing valve of claim 1 , further including a plurality of electromagnets each coupled to the valve body, wherein a first set of the electromagnets are configured to rotate the baffle in the first direction when the voltage is applied to the first set of the electromagnets and no voltage is applied to a second set of the electromagnets, and the second set of the electromagnets are configured to rotate the baffle in the direction opposite the first direction when the voltage is applied to the second set of the electromagnets and no voltage is applied to the first set electromagnets.

13. The reversing valve of claim 12 , wherein:
the first set of electromagnets includes a first electromagnet and a second electromagnet diagonally opposed to the first electromagnet; and
the second set of electromagnets includes a third electromagnet and a fourth electromagnet diagonally opposed to the third electromagnet.

14. The reversing valve of claim 1 , wherein:
the input port is configured to be coupled to a refrigerant discharge line from a compressor;
the output port is configured to be coupled to a refrigerant suction line of the compressor; and
the first reversing port and the second reversing port are configured to be coupled to an indoor heat exchange coil and an outdoor heat exchange coil, respectively.

Assignees

• Lennox Ind Inc

Inventors

• Giles Eric
• Mchugh Chris

Classifications

• F16K11/0525 Primary

  the closure members being pivoted around an essentially central axis · CPC title

• F25B41/26

  of fluid flow reversing valves · CPC title

• F25B13/00

  Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title

• Y10T29/49405

  Valve or choke making · CPC title

• Y10T137/86839

  Four port reversing valves · CPC title