Refrigerant recovery and recharge device

Patent metadata

Field	Value
Publication number	US-9618248-B2
Application number	US-201214131322-A
Country	US
Kind code	B2
Filing date	May 9, 2012
Priority date	Jul 8, 2011
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A refrigerant recovery and recharge device and a method to recharge oil to refrigeration equipment is disclosed. The refrigerant recovery and recharge device comprises a valve block which is adapted to establish fluid communication between the device and refrigeration equipment and a recharge path adapted to recharge oil to the refrigeration equipment through an outlet in the valve block. The device further comprises at least a first oil container and a second oil container and the valve block comprises a valve with a first inlet and a second inlet. The first oil container is in fluid communication with the first inlet and the second oil container is in fluid communication with the second inlet to recharge oil to the refrigeration equipment. The method for recharging oil recharges oil either from the first oil container or the second oil container in dependence of the type of fuel used in the vehicle.

First claim

The invention claimed is:

1. A refrigerant recovery and recharge device comprising:
a valve block configured to establish fluid communication between said refrigerant and recovery device and refrigeration equipment;
a recharge path configured to recharge oil to said refrigeration equipment through an outlet in said valve block;
a first oil container configured to recharge oil to said refrigeration equipment through said recharge path; and
a second oil container configured to recharge oil to said refrigeration equipment through said recharge path;
wherein the valve block includes a valve with a first inlet and a second inlet, said first oil container being in fluid communication with said first inlet and said second oil container being in fluid communication with said second inlet to recharge oil to said refrigeration equipment; and
wherein said first oil container and said second oil container contain different oils.

2. The device as claimed in claim 1 , wherein said refrigeration equipment is vehicle refrigeration equipment.

3. The device as claimed in claim 1 , wherein said first oil container contains oil used in the refrigeration equipment of a fossil fuel vehicle.

4. The device as claimed in claim 1 , wherein said second oil container contains oil used in the refrigeration equipment of a hybrid vehicle.

5. The device as claimed in claim 1 , wherein said valve in said valve block is used to selectively recharge oil from one of said first oil container and said second oil container to said refrigeration equipment.

6. The device as claimed in claim 1 , wherein one of said first oil container and said second oil container has a male connector and the other has a female connector to connect said first oil container and said second oil container to said valve.

7. A method to recharge oil in vehicle refrigeration equipment using a refrigerant recovery and recharge device, said method comprising:
establishing a fluid communication between the vehicle refrigeration equipment and a refrigerant recovery and recharge device through a valve in a valve block; and
recharging oil to said refrigeration equipment from one of a first oil container, which contains a first oil, and a second oil container, which contains a second oil that is different from the first oil, depending on a type of oil used by said vehicle refrigeration equipment.

8. The method as claimed in claim 7 , wherein the recharging of the oil to said refrigeration equipment includes charging said first oil to the refrigeration equipment of a fossil fuel vehicle.

9. The method as claimed in claim 7 , wherein the recharging of the oil to said refrigeration equipment includes charging said second oil to the refrigeration equipment of a hybrid vehicle.

10. The method as claimed in claim 7 , wherein the recharging of the oil to said refrigeration equipment includes operating said valve in said valve block to selectively recharge oil from one of said first oil container and said second oil container to said refrigeration equipment.

11. The method as claimed in claim 7 , wherein one of said first oil container and said second oil container has a male connector and the other has a female connector to connect said first oil container and said second oil container to said valve.

12. A refrigerant recovery and recharge device comprising:
a valve block configured to establish fluid communication between said refrigerant and recovery device and refrigeration equipment;
a recharge path configured to recharge oil to said refrigeration equipment through an outlet in said valve block;
a first oil container configured to recharge oil to said refrigeration equipment through said recharge path; and
a second oil container configured to recharge oil to said refrigeration equipment through said recharge path;
wherein the valve block includes a valve with a first inlet and a second inlet, said first oil container being in fluid communication with said first inlet and said second oil container being in fluid communication with said second inlet, to selectively recharge oil from one of said first oil container and said second oil container to said refrigeration equipment.

13. The device as claimed in claim 12 , wherein said refrigeration equipment is vehicle refrigeration equipment.

14. The device as claimed in claim 12 , wherein said first oil container contains oil used in the refrigeration equipment of a fossil fuel vehicle.

15. The device as claimed in claim 12 , wherein said second oil container contains oil used in the refrigeration equipment of a hybrid vehicle.

16. The device as claimed in claim 12 , wherein one of said first oil container and said second oil container has a male connector and the other has a female connector to connect said first oil container and said second oil container to said valve.

Assignees

• Iyengar Venkatesh Gorur Krishna
• Mahle Int Gmbh

Inventors

• Iyengar Venkatesh Gorur Krishna

Classifications

• B60H1/00585

  Means for monitoring, testing or servicing the air-conditioning · CPC title

• F25B2345/004

  with several tanks to collect or charge a cycle · CPC title

• F25B45/00 Primary

  Arrangements for charging or discharging refrigerant · CPC title

• F25B43/02

  for separating lubricants from the refrigerant · CPC title