Refrigeration leak sealant and method
OwnerRobert H. Holzknechtinventor
Life of this patent
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Abstract
A stop leak composition for sealing leaks in refrigeration systems and method for using same. A mixture of smooth surfaced particles having a size small relative to the leak size is suspended in refrigeration oil and injected into the refrigerant circuit of a system. The particles will be forced into small leaks and will agglomerate to seal the leak. Graphite particles and Teflon.RTM. particles in size ranges from 20 microns to 65 mesh are suitable.
Claims11
A stop leak composition for stopping a leak in refrigeration systems having a refrigerant comprising:
- mineral oil compatible with the refrigerant;
- and
- a mixture of smooth surfaced particles having sizes small relative to the size of the leak, said mixture suspended in said mineral oil wherein the ratio of said particles selected from the group consisting of graphite, polytetrafluoroethylene, magnesium, aluminum sulfate, zinc oxide and mixtures thereof to said mineral oil is within the ratio of about 1:10 to 6:10.
In a refrigeration system having a refrigerant, the leak proofing system comprising:
- a dryer having means for passing said refrigerant therethrough;
- dessicant holding means disposed within said dryer, including a dessicant for absorbing moisture from said refrigerant, said holding means adapted to isolate said dessicant from contact with said refrigerant;
- and
- refrigeration oil having suspended therein a mixture of smooth surfaced particles selected from the group consisting of graphite, polytetrafluoroethylene, magnesium, aluminum sulfate, zinc oxide and mixtures thereof having sizes in the range of about 20 microns to 65 mesh, said refrigerant oil and said mixture being mixed with said refrigerant.
A method for leak proofing and for sealing small leaks in refrigeration systems comprising the steps of:
- a. mixing smooth surfaced particles selected from the group consisting of graphite, polytetrafluoroethylene, magnesium, aluminum sulfate, zinc oxide and mixtures thereof having sizes small relative to the leak size;
- b. suspending the mixed particles in mineral oil compatible with the refrigerant;
- and
- c. injecting the mineral oil and suspended particles into the refrigerant circuit of the system.
Dependencies are inferred from the claim text.