# US 5,699,677 A · Compressor mounted drain pan utilizing polyurethane adhesive > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,699,677 A - Document ID: US5699677A - Status: Granted - Kind: A - Application number: 08/745,044 - Filed: 1996-11-07 - Granted: 1997-12-23 - Earliest claimed: 1996-11-07 - Assignees: White Consolidated Industries, Inc. - Inventors: Kevin E. Hakala; Joseph D. Kunkel; Glenn L. Johnson - Web page: https://patentgrep.com/patent/US5699677A ## CPC - F25D 21/14: Collecting or removing condensed and defrost water; Drip trays - C08G 18/10: Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step - C09J 175/04: Polyurethanes - F25B 2500/13: Vibrations - F25D 2201/30: with respect to sound - F25D 2321/1411: using compressor heat - F25D 2321/1442: outside a refrigerator - F25D: REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR (refrigerated showcases A47F3/04; thermally-insulated vessels for domestic use A47J41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS ## Abstract Disclosed is a compressor and drain pan assembly utilizing a polyurethane adhesive to secure the drain pan to the compressor housing. The adhesive has an elasticity sufficient to dampen vibrations from the compressor, thereby significantly minimizing undesirable noise. ## Claims ### Claim 1 A compressor and drain pan assembly comprising: a compressor unit, said compressor unit having an outer housing; a drain pan adhered to said outer housing; and a polyurethane adhesive disposed between said drain pan and said outer housing, said adhesive adhering said drain pan to said housing. ### Claim 2 (depends on 1) The assembly of claim 1 wherein said outer housing of said compressor unit includes an upper hemispherical cover and a lower cylindrical basket. ### Claim 3 (depends on 1) The assembly of claim 1 wherein said drain pan is formed from a metal. ### Claim 4 (depends on 3) The assembly of claim 3 wherein said drain pan is formed from galvanized steel. ### Claim 5 (depends on 1) The assembly of claim 1 wherein said drain pan includes an outer arcuate wall, an inner arcuate wall, a first arcuate end wall extending between said inner wall and said outer wall, and a second arcuate end wall extending between said inner wall and said outer wall. ### Claim 6 (depends on 5) The assembly of claim 5 wherein said drain pan is adhered to said outer housing of said compressor by use of said adhesive disposed between said inner wall and said outer housing of said compressor. ### Claim 7 (depends on 1) The assembly of claim 1 wherein said polyurethane adhesive is a two component polyurethane adhesive. ### Claim 8 (depends on 7) The assembly of claim 7 wherein said first component of said adhesive comprises a diisocyanate-terminated prepolymer, and said second component comprises a polyol and polyamine cross-linking agent and catalyst. ### Claim 9 A compressor and drain pan assembly comprising: a compressor for use in a refrigeration system, said compressor having an outer housing; a metal drain pan having (i) an outer arcuate wall having a first end and a second end, (ii) an inner arcuate wall having a first end and a second end, (iii) a first arcuate end wall extending between and adjoining said first end of said outer arcuate wall and said first end of said inner arcuate wall, and (iv) a second arcuate end wall extending between and adjoining said second end of said outer arcuate wall and said second end of said inner arcuate wall; and an adhesive disposed between said outer housing of said compressor and said inner arcuate wall of said drain pan, to thereby adhere said drain pan to said compressor. ### Claim 10 (depends on 9) The assembly of claim 9 wherein said drain pan further has (v) a drain spout defined at one of said first end wall and said second end wall. ### Claim 11 (depends on 9) The assembly of claim 9 wherein said first end wall and said second end wall are semi-circular. ### Claim 12 (depends on 9) The assembly of claim 9 wherein said adhesive is a polyurethane adhesive. ### Claim 13 (depends on 12) The assembly of claim 12 wherein said polyurethane adhesive is a two component polyurethane adhesive. ### Claim 14 (depends on 13) The assembly of claim 13 wherein said two component polyurethane adhesive comprises a first component consisting essentially of a diisocyanate-terminated prepolymer, and a second component consisting essentially of a polyol and polyamine cross-linking agent and catalyst. ### Claim 15 A method for reducing the level of noise emitted from a compressor and metal drain pan to be mounted upon said compressor, said method comprising: mounting said drain pan on said compressor by depositing an effective amount of a polyurethane adhesive between and in contact with said drain pan and said compressor, followed by curing said adhesive. ### Claim 16 (depends on 15) The method of claim 15 wherein said polyurethane adhesive is a two component polyurethane adhesive. ### Claim 17 (depends on 16) The method of claim 16 wherein said polyurethane adhesive comprises a first component consisting essentially of a diisocyanate-terminated prepolymer, and said second component comprises a polyol and polyamine cross-linking agent and catalyst.