US2226641A - Ventilator - Google Patents

Description

v 31,, 1940. B. SONNTAG 2,226,641

VENTILATOR Filed April 10, 1959 Patented Dec. 31, 1940 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to ventilators, and it has particular reference to ventilators of the type used to carry away grease-laden vapors, smoke and heat resulting from the use of kitchen ranges and stoves for cooking purposes.

The principal object of the invention is to provide a ventilator assembly so arranged that accumulations of grease may readily be removed with a minimum of efiort.

Another object is to provide a ventilator structure so constructed that liquified grease is drained from the centrifugal blower housing prior to solidification, thereby precluding the possibility of the congealed grease clogging the 5 blower and preventing its rotation.

A still further object is to provide a ventilator so arranged that the parts thereof are easily assembled and disassembled for cleaning or other purposes.

20 With the foregoing objects as paramount, the invention has particular reference to its salient features of construction and arrangement of parts which will become manifest as the description proceeds taken in connection with the g5 accompanying drawing, wherein:

Figure 1 is a fragmentary perspective view of a gas range showing the hood in place and with portions thereof broken away,

Figure 2 is a view in vertical transverse sec- 30 tion of the hood and showing in detail the centrifugal blower and its attendant parts,

Figure 3 is a top plan view of Figure 2, shown with the hood removed,

Figure 4 is an elevational view of the exhaust 35 housing cover plate, shown with portions broken away,

Figure 5 is a perspective view of the preferred form of the grease trap,

Figure 6 is a fragmentary view in perspective of a modified form of grease trap, and

Figure 7 is a cross-sectional view of the means for slidably interconnecting the smoke deflector to the ventilator assembly.

The present invention is a continuation of 45 U. S. Patent No. 2,077,496 issued to Bernhard Sonntag, April 20, 1937.

Referring to the drawing, the reference 'numeral l denotes a cooking range. A back plate 2 is arranged as shown, to which plate a hood 3 50 is attached, both units being afiixed to the wall of the kitchen or directly attached to the range or made a part thereof.

A vent pipe t leads to the fiue or other suitable vent of the building structure. 65 The exhaust unit is comprised primarily of a centrifugal blower 5, which blower is driven by an electric motor 6.

The blower 5 and the motor 6 are enclosed by a housing comprised of a bottom plate I, a partition wall 8, and a cover plate 9. 5 An opening I0 is provided in the cover plate 9, through which air and grease-laden vapors, smoke, heat, etc., are drawn and subsequently delivered to the vent pipe 4 by the action of the blower 5, which blower is surrounded by a scroll 10 shaped member ll, best shown in Figure 4.

A smoke deflector I2 is slidably attached to the base 1 by means of the angularly bent members l3 and M, which members are aflixed to the shield l2 and base I as best shown in Figure 7. Ready assembly and disassembly of thesmoke deflector may thus be accomplished. Removal of the cover plate 9 is accomplished by loosening the wing nuts 55, handles it being arranged as shown.

Operation of a light ll is controlled by a pull cord it and current to the motor it is switched ofi or on by means of a pull cord is.

The preferred form. of grease trap 26 is illustrated in perspective in Figure 5. The trap or pan 2b is secured to the wall 8 by means of a wing nut 21!. Liquified grease entrapped within the scrollmember ll passes by gravity through a hole or opening 22 into the pan 20 from which the grease may be periodically removed in a 3 solid state when so required. Undesirable grease accumulation is thus prevented within the scroll housing ll, centrifugal blower 5, vent pipe 4 and the flue or chimney to which vent is attached.

Figure 6 is a fragmentary view in perspective of a modified form of the invention wherein a blower 23 is encased by a scroll housing 24. A back plate 25 which is secured to the housing 24 serves to form a wall which, combined with the housing 24 and plate 26 forms a grease trap below the blower 23, from which solidified grease may be removed.

Manifestly, the construction shown is capable of considerable modification, and such modification as is considered within the scope of the appended claim is likewise considered within the spirit and intent of the invention.

What is claimed is:

A ventilator of the class described and in combination with a hood, said hood including a housing having a rearwardly projecting support, the said housing comprising a bottom wall, and a rear wall, a removable cover plate for the housing, the said removable cover plate having an opening for inlet of smoke and fumes, an outlet to allow drainage of grease irom the interior of the said scroll housing to said grease trap, an angular means secured to the bottom wall of the first-mentioned housing, a removable smoke deflecting apron having means for slidably engaging the angular means of the bottom wall for holding the smoke deflecting apron in operable position in the hood, and the removable trap being accessible by removing the said removable deflecting apron and the removable cover 10 plate.

BERNHARD SONNTAG.

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