IP Library Granted Patent US 7,293,419
Granted Patent B1
US 7,293,419 · App. 10/936,497 · Granted Nov 13, 2007

Refrigerant transfer system and method

Assignee: Snap-On Incorporated
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Quick Facts
Patent No.
US 7,293,419
App. No.
10/936,497
Granted
Nov 13, 2007
Kind
B1
Abstract

A refrigerant recovery/recycling system includes a source container fluidly connected to a recovery/recycling device via a vaporizer. Liquid refrigerant is introduced into the vaporizer via the source container and the vaporizer changes the refrigerant from a liquid into a vapor. In so doing, slow/no flow conditions of both the source container and the recovery/recycling device can be reduced, which increases the rate in which the recovery/recycling device is charged with refrigerant.

Claims (20)

1. A refrigerant recovery/recycling system, comprising:

a source container for storing refrigerant;

a recovery/recycling device having a refrigerant recovery tank;

a vaporizer disposed between and fluidly connected to the source container and the refrigerant recovery tank of the recover/recycling device.

2. The system according to claim 1 , wherein the vaporizer is a thermal expansion valve.

3. The system according to claim 1 , wherein the vaporizer is a regulator.

4. The system according to claim 1 , wherein the vaporizer is a pulsed solenoid.

5. The system according to claim 1 , wherein the vaporizer is an orifice.

6. The system according to claim 1 , wherein the vaporizer is positioned within the recovery/recycling device.

7. The system according to claim 1 , wherein the vaporizer is positioned away from the recovery/recycling device.

8. A method for charging a recovery/recycling device with refrigerant, comprising:

transferring liquid refrigerant from a source container to a vaporizer separate from said source container;

vaporizing the liquid refrigerant using the vaporizer;

transferring the vaporized refrigerant from the vaporizer to a refrigerant recovery tank of the recovery/recycling device.

9. The method according to claim 8 , wherein the vaporizer is a thermal expansion valve.

10. The method according to claim 8 , wherein the vaporizer is a regulator.

11. The method according to claim 8 , wherein the vaporizer is a pulsed solenoid.

12. The method according to claim 8 , wherein the vaporizer is an orifice.

13. The system according to claim 8 , wherein the vaporizer is positioned within the recovery/recycling device.

14. The system according to claim 8 , wherein the vaporizer is positioned away from the recovery/recycling device.

Assignments (2)
CONFIRMATORY ASSIGNMENT BETWEEN SNAP-ON INCORPORATED AND SPX CORPORATION Recorded Aug 20, 2009
From: SNAP-ON INCORPORATED (A DELAWARE CORPORATION)
To: SPX CORPORATION (A DELAWARE CORPORATION)
Reel/Frame 023119/0435 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2004
From: MOLLER, LARRY G.; PFEFFERLE, DEAN P.
To: SNAP-ON INCORPORATED
Reel/Frame 015782/0258 →
Continuity (1)
Provisional Application 6057457700 · May 27, 2004