# US 5,706,850 A · Oil diffuser

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,706,850 A
- Document ID: US5706850A
- Status: Granted
- Kind: A
- Application number: 08/752,240
- Filed: 1996-11-19
- Granted: 1998-01-13
- Earliest claimed: 1996-11-19
- Assignees: Carrier Corporation
- Inventors: Terry Nares
- Web page: https://patentgrep.com/patent/US5706850A

## CPC

- B01D 45/02: by utilising gravity
- F04B 39/04: Measures to avoid lubricant contaminating the pumped fluid
- F04B 39/16: Filtration; Moisture separation
- F25B 31/004: {oil recirculating arrangements}
- F25B 43/006: {Accumulators}
- F25D 2500/02: Geometry problems
- Y10T 137/3003: Fluid separating traps or vents
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention provides an oil diffuser in the suction line of a compressor. The oil diffuser provides an increased cross sectional area whereby the flow velocity is decreased and further provides non-aligned entering and discharge lines whereby inertial forces and gravitational forces acting on oil flowing into the diffuser tends to move the oil away from the circuitous path necessary for entering into the discharge line. The resulting separated oil can enter the discharge line via a small hole in the tube which only permits metered mounts of oil to be supplied to the suction of the compressor.

## Claims

### Claim 1

An oil diffuser comprising:
a horizontally extending casing including a body portion and first and second end portions which coact to define a chamber;
said first and second end portions each having an opening in its lower portion;
an inlet line sealingly secured in said opening in said first end portion and extending into said chamber essentially in alignment with said opening in said second end portion;
an outlet line having a first portion sealingly secured in said opening of said second end portion and extending into said chamber essentially in alignment with said inlet line;
said outlet line having a second portion facing said inlet line and extending upwardly above said inlet line and including an inlet in said second portion at a location above said inlet line;
a metering opening formed in the bottom of said first portion of said outlet line at a point within said chamber whereby flow entering said chamber via said inlet line tends to impinge upon said second portion of said outlet line causing separation of oil contained in said flow entering said chamber with said separated oil collecting in said chamber and exiting said chamber in a metered fashion via said metering opening due to aspirating into flow passing through said outlet line.

### Claim 2 (depends on 1)

The diffuser of claim 1 wherein said chamber is essentially cylindrical.

### Claim 3 (depends on 1)

The diffuser of claim 1 wherein said second portion is an elbow.

### Claim 4 (depends on 3)

The diffuser of claim 3 wherein said elbow makes an angle of 45.degree..