# US 6,719,622 B2 · Smoke exhaust structure

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- Number: US 6,719,622 B2
- Document ID: US6719622B2
- Status: Granted
- Kind: B2
- Application number: 10/216,933
- Filed: 2002-08-13
- Published: 2004-02-19
- Granted: 2004-04-13
- Earliest claimed: 2002-08-13
- Inventors: Ja-Chun Peng
- Web page: https://patentgrep.com/patent/US6719622B2

## CPC

- F23L 17/02: Tops for chimneys or ventilating shafts; Terminals for flues
- B08B 15/02: using chambers or hoods covering the area {(B08B15/002 takes precedence)}
- F24C 15/20: Removing cooking fumes (parts, details or accessories of cooking-vessels for withdrawing or condensing cooking vapours from such vessels A47J36/38)
- F23L: SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ({air-supply arrangements for fluent fuels F23C;} firebridges with means for feeding air or steam F23M3/04; baffles or shields with air supply passages F23M9/04); VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS {(dampers and throat restrictors for open fire-places F24; air inlet valves for open fire fronts F24)}; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION

## Abstract

A smoke exhaust structure including a housing, a circuit system and a smoke exhaust system. At least one motor is arranged on the housing. The circuit system is connected with the motor and a controller via electric wire. The smoke exhaust system is composed of at least one fan, a wind chamber and at least one oil tank. The smoke exhaust system is an independent passage. The wind chamber communicates with the housing and the circuit system only via at least one through hole which is slightly larger than the motors, permitting the motor to pass therethrough. The wind chamber of the smoke exhaust system is totally isolated from the circuit system and the housing, whereby a user can easily detach the components of the entire smoke exhaust system for cleaning or replacement so as to fully clean up the oily dirt and ensure good smoke exhausting function of the smoke exhaust structure.

## Claims

### Claim 1

A smoke exhaust structure comprising a housing, a circuit system and a smoke exhaust system, at least one motor being arranged on the housing, the circuit system being connected with the motor and a controller via electric wire, the smoke exhaust system being composed of at least one fan, a wind chamber and at least one oil tank, the smoke exhaust system being an independent passage, the wind chamber communicating with the housing and the circuit system only via at least one through hole which is slightly larger than the motors, permitting the motor to pass therethrough, said smoke exhaust structure being characterized in that the wind chamber of the smoke exhaust system is totally isolated from the circuit system and the housing, whereby a user can easily detach the components of the entire smoke exhaust system for cleaning or replacement so as to fully clean up the oily dirt and ensure good smoke exhausting function of the smoke exhaust structure.

### Claim 2 (depends on 1)

The smoke exhaust structure as claimed in claim 1, wherein the smoke exhaust system and the motor are locked in the housing and inclined from rear wall of the housing.

### Claim 3 (depends on 1)

The smoke exhaust structure as claimed in claim 1, wherein the smoke exhaust system and the motor are locked on a vertical rear wall of the housing.

### Claim 4 (depends on 1)

The smoke exhaust structure as claimed in claim 1, wherein the wind chamber has a peripheral wall, two sides of the peripheral wall being formed with a first face and a second face opposite to the first face, the peripheral wall sealing the wind chamber and defining a smoke exhaust passage in the wind chamber, the first face facing the inner face of the housing, the circuit system and the housing are positioned on outer side of the smoke exhaust passage.

### Claim 5 (depends on 4)

The smoke exhaust structure as claimed in claim 4, wherein the first face is separated from the wind chamber and the first face is locked on inner face of the housing by multiple bolts.

### Claim 6 (depends on 4)

The smoke exhaust structure as claimed in claim 4, wherein an outer face of the first face proximal to the inner face of the housing and the inner face of the housing define therebetween a receiving space through which the circuit passes.

### Claim 7 (depends on 4)

The smoke exhaust structure as claimed in claim 4, wherein the circumference of the first face is welded with the circumference of the peripheral wall of the wind chamber.

### Claim 8 (depends on 1)

The smoke exhaust structure as claimed in claim 1, wherein a leakproof washer is disposed along the inner circumference of the through hole.