US3592121A - Compensating hood apparatus - Google Patents

Compensating hood apparatus Download PDF

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Publication number
US3592121A
US3592121A US835340A US3592121DA US3592121A US 3592121 A US3592121 A US 3592121A US 835340 A US835340 A US 835340A US 3592121D A US3592121D A US 3592121DA US 3592121 A US3592121 A US 3592121A
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US
United States
Prior art keywords
air
column
operator
intake
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US835340A
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English (en)
Inventor
Alvin S Lundy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RSW Inc A CORP OF MI
Original Assignee
CLAUDE B SCHNEIBLE CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CLAUDE B SCHNEIBLE CO filed Critical CLAUDE B SCHNEIBLE CO
Application granted granted Critical
Publication of US3592121A publication Critical patent/US3592121A/en
Assigned to RSW, INC., A CORP OF MI reassignment RSW, INC., A CORP OF MI ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SCHNEIBLE COMPANY A MI CORP
Assigned to SCHNEIBLE COMPANY reassignment SCHNEIBLE COMPANY CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE SEPT. 1,1970 Assignors: CLAUDE B. SCHNEIBLE CO.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area

Definitions

  • COMPENSATING HOOD APPARATUS BACKGROUND AND SUMMARY Compensating hoods with integral air supply have been pro vided for removing a column of smoke, dust or other contamination while employing an air discharge adjacent to the edge of the hood to direct a curtain of air between the column and the operator, the curtain of air serving to direct the smoke or other contamination toward the intake of the hood.
  • a primary benefit is to reduce room-heating costs as a large portion of the total air exhausted is supplied in unheated form.
  • the compensating hood can be modified to provide adjustable means for cooling the operator by the use of outside air in warm seasons while at the same time providing the air curtain between the operator and the source of smoke, fumes, etc. in the winter season when the incoming air is cold.
  • the air can be directed against the operator for improved cooling purposes while at the same time the air is effective as a blanket for directing the contaminant material toward the discharge intake.
  • FIG. I is a side view in elevation of compensating hood apparatus embodying my invention.
  • FIG. 2 a broken side view in elevation of a portion of the apparatus shown in FIG. I;
  • FIG. 3 a broken front view in elevation of a portion of the apparatus shown in FIG. 1.
  • DETAILED DESCRIPTION designates support apparatus upon which a hood ll is mounted.
  • the hood is provided at its front with an exhaust intake 12 which extends downwardly and inwardly over a casting 13 or other source of smoke, fumes, dust, or other contaminant.
  • a source of suction l4 communicates with the chamber leading to the intake 12.
  • the intake may be provided with spaced louvers 15 which may be of any suitable shape but are preferably tear shaped in cross section.
  • Above the intake 12 is an air discharge opening 16, and forwardly of the opening are mounted deflectors 17 connected by a side member 18. The hinged deflectors may be moved to different positions for guiding the outflow of air and may be clamped in any fixed position by tightening nuts on the hinge rods, etc.
  • the air chamber 16 communicates with an air supply conduit 19 leading to a source of air pressure.
  • exhaust air is drawn in through intake 12 and discharged through the outlet 14 under the force of suction, while supply air is introduced through conduit 19 which communicates directly with the air outlet 16 and the deflectors 17.
  • the compensating hood For proper operation of the compensating hood to provide a curtain between the operator and the contamination source. I prefer to employ an air velocity under 1,200 feet per minute and preferably in the range of 700l,000 feet per minute. While a velocity in this range will cool the operator, improved cooling will be secured with a higher airflow velocity, preferably in the range of 1,200 to 2,500 feet per minute. Accurate of the velocities is important for good results in providing the air curtain between the operator and the source ofcontamination. and also for providing the curtain which en elopes the operator to cool him while at the same time accomplishing the important purpose of directing the column of smoke,
  • any suitable means for increasing the velocity of the air when it is to be directed upon the operator may be provided.
  • the baffle 20 is moved downwardly to position A for use in the winter season when the air curtain is to be directed between the operator and the shaker or casting support, etc. ln the summer season when it is desired to direct the outside air upon the operator, the baffle 20 may be moved to position 8 in which it effectively closes the lower discharge port so that all of the incoming air is discharged through the two upper discharge ports illustrated in FIG. 2.
  • the velocity of the air is approximately 50 percent greater than when the air is used with the baffle 20 in position A.
  • Directing the cooling air upon the operator may be accomplished by moving the deflectors 17 to the desired position, and the velocity of the air may be increased by any suitable means including increasing the volume.
  • the closure baffle 20 when it is swung to the restricting position B, there is an automatic increase in velocity which causes the air to move forwardly to a greater extent, and this may be sufficient by itself to furnish the cooling blanket of air about the operator.
  • the compensating air deflectors may be adjusted to blowing the compensating, or outside, air directly on the workman or workmen in warm weather, thus providing comfort cooling.
  • the baffles may be adjusted to direct the air between the workman and the source of contamination while providing means for increasing the velocity of the discharged air.
  • the air in each type of operation extends downwardly and curves inwardly under the influence of the suction of intake 12 to provide a blanket around the smoke, fumes, etc. and directs it toward intake 12.
  • the air forms an inverted V canopy for directing the rising column of gas, etc. toward the intake 12.
  • an exhaust conduit equipped with an intake adjacent said column, means providing an air chamber communicating with a source of air pressure, said chamber having upper and lower discharge ports for directing the discharged air downwardly and outwardly over said gas column to direct said gas toward said exhaust intake, and closure means for closing said lower port to increase the velocity of the discharged air and to project the air from the upper port.

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  • Air-Flow Control Members (AREA)
  • Ventilation (AREA)
  • Prevention Of Fouling (AREA)
US835340A 1969-06-23 1969-06-23 Compensating hood apparatus Expired - Lifetime US3592121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83534069A 1969-06-23 1969-06-23

Publications (1)

Publication Number Publication Date
US3592121A true US3592121A (en) 1971-07-13

Family

ID=25269258

Family Applications (1)

Application Number Title Priority Date Filing Date
US835340A Expired - Lifetime US3592121A (en) 1969-06-23 1969-06-23 Compensating hood apparatus

Country Status (5)

Country Link
US (1) US3592121A (de)
CH (1) CH502563A (de)
DE (1) DE2000696C3 (de)
FR (1) FR2031221A5 (de)
GB (1) GB1216070A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266528A (en) * 1978-12-13 1981-05-12 The Celotex Corporation Ducted/ductless range hood
US4714097A (en) * 1986-10-14 1987-12-22 Dravo Corporation Dust containment system for bulk cargo containers
US4961442A (en) * 1988-03-18 1990-10-09 Polinorsud Dynamic containment device
US20040148753A1 (en) * 1996-07-26 2004-08-05 Dubuc Paul C. Solid surface material fabrication station

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716257A1 (de) * 1987-05-15 1988-11-24 Takeo Imai Verfahren und vorrichtung zum auffangen verschmutzter substanzen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565933A (en) * 1948-03-22 1951-08-28 Claude B Schneible Ventilating exhaust structure
US3411428A (en) * 1966-06-27 1968-11-19 Willard K. Ahlrich Ventilating hood for food cooking device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565933A (en) * 1948-03-22 1951-08-28 Claude B Schneible Ventilating exhaust structure
US3411428A (en) * 1966-06-27 1968-11-19 Willard K. Ahlrich Ventilating hood for food cooking device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266528A (en) * 1978-12-13 1981-05-12 The Celotex Corporation Ducted/ductless range hood
US4714097A (en) * 1986-10-14 1987-12-22 Dravo Corporation Dust containment system for bulk cargo containers
US4961442A (en) * 1988-03-18 1990-10-09 Polinorsud Dynamic containment device
US20040148753A1 (en) * 1996-07-26 2004-08-05 Dubuc Paul C. Solid surface material fabrication station
US7080443B2 (en) * 1996-07-26 2006-07-25 Dubuc Paul C Solid surface material fabrication station

Also Published As

Publication number Publication date
DE2000696C3 (de) 1980-09-25
FR2031221A5 (de) 1970-11-13
GB1216070A (en) 1970-12-16
DE2000696A1 (de) 1971-01-14
DE2000696B2 (de) 1980-02-07
CH502563A (de) 1971-01-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: RSW, INC., 714 NORTH SAGINAW STREET HOLLY, MI 484

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SCHNEIBLE COMPANY A MI CORP;REEL/FRAME:004403/0724

Effective date: 19840809

Owner name: SCHNEIBLE COMPANY

Free format text: CHANGE OF NAME;ASSIGNOR:CLAUDE B. SCHNEIBLE CO.;REEL/FRAME:004400/0803

Effective date: 19850416