Air conditioning and refrigeration system using a sulfur containing polar compound

• US 6,362,139 B1
• Filed: 05/02/2000
• Issued: 03/26/2002
• Est. Priority Date: 05/02/2000
• Status: Expired due to Fees

• Current Assignee: Teresa Leigh Barr, Tony Pio Sgarbi
• Original Assignee: Teresa Leigh Barr, Tony Pio Sgarbi
• Inventors: Sgarbi, Tony Pio, Barr, Teresa Leigh
• Primary Examiner(s): Howard, Jacqueline V.
• Application Number:
  US09/563,217
• Time in Patent Office: 693 Days
• Field of Search: 252/68, 508/551, 508/569, 508/570
• US Class Current: 508/551
• CPC Class Codes: C09K 5/041 for compression-type refrigeration systems
• CPC Class Codes: C10M 141/08 at least one of them being an organic sulfur-, selenium- or tellurium-containing compound
• CPC Class Codes: C10M 169/04 Mixtures of base-materials and additives
• CPC Class Codes: C10M 171/008 Lubricant compositions compatible with refrigerants
• CPC Class Codes: C10M 2207/022 containing at least two hydroxy groups
• CPC Class Codes: C10M 2207/283 of polyhydroxy compounds
• CPC Class Codes: C10M 2219/04 containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
• CPC Class Codes: C10M 2219/044 Sulfonic acids, Derivatives thereof, e.g. neutral salts
• CPC Class Codes: C10M 2219/066 Thiocarbamic type compounds
• CPC Class Codes: C10N 2020/101 Containing Hydrofluorocarbons
• CPC Class Codes: C10N 2040/30 Refrigerators lubricants or compressors lubricants

Abstract

A method of improving the efficiency of an air conditioning and refrigeration system, comprising introducing into the system a mixture of a carrier with an energy transferring polar compound comprising a sulfur component; a novel additive in a polar compound containing a sulfur component; and an air conditioning system utilizing a polar compound containing a sulfur component.

Claims

1. A method of improving the efficiency of a compressor driven system for removing heat using a compressible liquid refrigerant consisting of a member of the group CFC, HCFC and HFC comprising the step of introducing a lubricant composition into the compressor of the system, wherein said lubricant composition comprises a sulfur containing polar compound and a polyol ester wherein said sulfur containing polar compound is a liquid sulfur containing polar compound containing 6-24 carbon atoms and 1 to 12 sulfur atoms.

2. The method of claim 1, wherein said sulfur containing polar compound is C 12-14-tert alkyl sulfamate.

3. The method of claim 1, wherein said polar compound is present in an amount from 1 to 40 percent by volume of the total volume of lubricant in the compressor.

6. The method of claim 1, wherein said lubricant composition comprises:

10 to 30 wt % of a polyol ester;

a member of the group consisting of a di-pentol glycol to increase viscosity (q.s, in quantity) or a neo-pentol glycol to lower viscosity of the lubricant;

10 to 20 wt % of a tracer dye;

1 to 10 wt % of methylene-bis-(dibutyldithiocarbamate);

1 to 10 wt % of a calcium salt of dialkyl aromatic sulfonic acid; and

about 60 wt % of C 12-14-tert alkyl sulfamate.

16. The method of claim 6, wherein said polyol ester is 20 wt %;

and wherein said calcium salt of dialkyl aromatic sulfonic acid is 2 wt %.

4. In a compressor driven system for removing heat using a compressible liquid refrigerant consisting of a member of the group CFC, HCFC and HFC, the improvement comprises adding to lubricant in the compressor a sulfur containing polar compound and a polyol ester wherein said sulfur containing polar compound is a liquid sulfur containing polar compound containing 6-24 carbon atoms and 1 to 12 sulfur atoms.

17. The improvement of claim 4, wherein said sulfur containing polar compound is C 12-14-tert alkyl sulfamate.

5. An additive for use in lubricants in a system for removing beat using a compressible liquid refrigerant consisting of a member of the group CFC, HCFC and HFC comprising:

a sulfur containing polar compound, a polyol ester and a carrier fluid wherein said sulfur containing polar compound is a liquid sulfur containing polar compound containing 6-24 carbon atoms and 1 to 12 sulfur atoms.

7. The additive of claim 5, wherein extreme pressure additives are further mixed with the additive.

8. The additive of claim 5, wherein the carrier fluid is naphthenic oil.

9. The additive of claim 5, further comprising a member of the group consisting of:

a metal conditioner, a metal stabilizer, a corrosion inhibitor, an antioxident, a seal conditioner, a tracer dye, a biocide, an acid scavenger, a water displacement additive, and combinations thereof.

12. The additive of claim 5, for use in an air conditioning system.

13. The additive of claim 5, for use in a refrigeration system.

18. The additive of claim 5, wherein said sulfur containing polar compound is C 12-14-tert alkyl sulfamate.

10. An additive for lubricants comprising a polyol ester, a dipentol glycol, a methylene-bis-(dibutyldithiocarbamate), a calcium salt of dialkyl aromatic sulfonic acid, and C 12-14-tert alkyl sulfamate.

11. The additive of claim 10, further comprising a tracer dye.

14. An additive for lubricants comprising a polyol ester, a neo-pentol glycol, a methylene-bis-(dibutyldithiocarbamate), a calcium salt of dialkyl aromatic sulfonic acid, and C 12-14-tert alkyl sulfamate.

15. The additive of claim 14, further comprising a tracer dye.