GB2119920A - Controlling spray booth atmosphere - Google Patents

Controlling spray booth atmosphere Download PDF

Info

Publication number
GB2119920A
GB2119920A GB08311504A GB8311504A GB2119920A GB 2119920 A GB2119920 A GB 2119920A GB 08311504 A GB08311504 A GB 08311504A GB 8311504 A GB8311504 A GB 8311504A GB 2119920 A GB2119920 A GB 2119920A
Authority
GB
United Kingdom
Prior art keywords
spray booth
fan
unit
filter
connecting sleeve
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.)
Granted
Application number
GB08311504A
Other versions
GB2119920B (en
GB8311504D0 (en
Inventor
Christopher Vernon Callaghan
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.)
AUTO OVENS Ltd
Original Assignee
AUTO OVENS Ltd
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 AUTO OVENS Ltd filed Critical AUTO OVENS Ltd
Priority to GB08311504A priority Critical patent/GB2119920B/en
Publication of GB8311504D0 publication Critical patent/GB8311504D0/en
Publication of GB2119920A publication Critical patent/GB2119920A/en
Application granted granted Critical
Publication of GB2119920B publication Critical patent/GB2119920B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/43—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0608—Perforated ducts

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

A filtered air supply unit for a spray booth comprises a mounting plate (1) having an aperture for alignment with an aperture (4) in the spray booth wall (5) and a connecting sleeve having a flange (7) formed with holes co-operating with studs on the mounting plate and a tubular length (10) which extends through and projects from the side of the spray booth wall (5). A fan (19) is secured to the mounting plate (1) with its outlet in register with the connecting sleeve and a closure (21) for the fan is secured to the mounting plate and carries an outer filter (22). A tubular adaptor (11) has one end (12) fitting round the inner end of the connecting sleeve and an inner filter (13) at the other end. Means (23) are provided for adjusting the output of the fan to maintain a slight positive pressure in the spray booth. <IMAGE>

Description

SPECIFICATION Controlling spray booth atmosphere This invention relates to the controlling of spray booth atmosphere and has for its object the avoidance of tailor-made installations, e.g. using plenum chambers for supplying clean replacement air.
According to the present invention, a filtered air supply unit for a spray booth comprises a mounting plate with bolt holes disposed about an aperture for alignment with the outer end of an aperture in the spray booth wall or ceiling, a connecting sleeve having a flange abutting the mounting plate and a tubular length to extend through and project from the inside of the spray booth wall or ceiling, a fan secured to the mounting plate with its outlet in register with the connecting sleeve, an enclosure for the fan secured to the mounting plate and carrying an outer filter, a tubular adaptor having one end fitting round the inner end of the connecting sleeve, an inner filter at the end of the tubular adaptor, and means for adjusting the output of the fan.
The entire unit is carried by the mounting plate and is readily fitted to a spray booth by making an aperture in its wall or ceiling.
Assuming the unit has an air supply capability in excess of the rate at which an exhaust fan removes volatiles-laden air, the output of the fan is adjusted until a slight positive pressure exists in the spray booth (as is preferably indicated by a manometer attached to the outside of the spray booth adjacent the unit) so as to prevent dust-laden air being drawn into the booth through gaps round or under doors, and without risk of blowing volatiles-laden air out through such gaps.
If the unit has an air supply capability less than the rate at which an exhaust fan removes volatiles-laden air, two (or more) such units are employed and the outputs of the fans are adjusted until a slight positive pressure exists in the spray booth.
The output of the fan may be controlled by an adjustable baffle, but the fan is preferably a speedreducible centrifugal fan, which may be enclosed by a cage covered with filter material providing the outer filter, which is preferably a "coarse" filter passing particles of 10 microns, while the inner filter may be a sock which is preferably a "fine" filter passing particles of 5 microns and enclosed within a cage secured to the adaptor.
The connecting sleeve preferably has a rectangular cross-section corresponding to the outlet of the fan, and the adaptor has a transition from a rectangular end fitting round the connecting sleeve to a circular end carrying the inner filter sock. The adaptor may include a bend through 90" to enable the inner filter sock to extend parallel to the wall or ceiling (as the case may be) of a spray booth.
The inner filter cage is preferably comprised of two cylindrical portions, one end of one portion being closed and its open end being fastened to one open end of the other cylindrical portion, the completed cage being adapted to be suspended from the ceiling.
The invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is an exploded perspective view of the principle parts of a filtered air supply unit in accordance with the invention; Figure2 is a diagrammatic drawing showing the assembled filtered air supply unit in situ; Figure 3 is an enlarged detail of part of Figure 2; Figure 4 is a diagrammatic vertical section of a spray booth incorporating a filtered air supply unit of the invention; Figure corresponds to Figure 4 but shows a different disposition of a filtered air supply unit of the invention; Figure 6 is a perspective view of a 90" bend for horizontal installation of the inner filter of a filtered air supply unit of the invention;; Figure 7 is a diagrammatic plan of a spray booth incorporating two filtered air supply units in accordance with the invention each with a bend as in Figure 6; Figure 8 is a diagrammatic vertical section of a spray booth as in Figure 7 but showing a different disposition of the filtered air supply units.
Figure 9 is a perspective view of a 90" bend for vertical installation of the inner filter of a filtered air supply unit of the invention; and Figure 70 is a diagrammatic vertical section of a spray booth incorporating a filtered air supply unit of the invention with a bend as in Figure 9.
In Figures 1 to 3 a filtered air supply unit for a spray booth has a mounting plate 1 having bolt holes 2 about an aperture 3 for alignment with the outer end of an aperture 4 in a spray booth wall 5, a connecting sleeve 6 which has a flange 7 having holes 8 for studs 9 on the mounting plate, and a tubular length 10 which extends through and projects from the inside of the wall 5, a tubular adaptor 11 of which one end 12 is rectangular and is fitted round the inner end of the tubular length 10 of the connecting sleeve 6 and secured (e.g. by screws, not shown), an inner filter 13 at the other, round end 14 of the adaptor 11 and secured by means of a band clip 15 adjacent a circumferential rib 16 on the round end 14, the inner filter 13 being within a cage 17 which is supported from the ceiling by chains 18.A fan 19 is secured to the mounting plate 1 outside the booth by means of the studs 9 with its outlet 20 in register with the connecting sleeve 6 and provided with an enclosure 21 and carrying an outer filter 22.
Means 23 for adjusting the output of the fan is provided between a mains lead 24 and an input lead 25 to the fan 19. A manometer 26 is provided outside the spray booth and has an outer tube 27 and an inner tube 28 the openings of which are at the same level, the manometer is to provide an indication of the pressure difference between the inside and the outside of the spray booth.
In Figure 4 a filtered air supply unit is shown in a position similar to that in Figure 3 in a spray booth 29, the spray booth having a door 30 and an exhaust fan 31 for removing safely volatiles-laden air. Figure 5 shows a similar installation to Figure 4 but vertically through the ceiling. Figure 6 shows a 90" bend 32 for installation intermediate the connecting sleeve 6 and the adaptor 11 to permit horizontal installation of the inner filter 13 of the unit as shown in Figures 7 and 8 which also show in each Figure two such units installed in one booth. Figure 9 shows a further 90 bend 33 which permits vertical installation of the inner filter 13 as shown in the spray booth of Figure 10. The bends 32 and 33 are provided with bracing webs 34.

Claims (13)

1. A filtered air supply unit for a spray booth comprising a mounting plate with bolt holes disposed about an aperture for alignment with the outer end of an aperture in the spray booth wall or ceiling, a connecting sleeve having a flange abutting the mounting plate and a tubular length to extend through ad project from the inside of the spray booth wall or ceiling, a fan secured to the mounting plate with its outlet in register with the connecting sleeve, an enclosure for the fan secured to the mounting plate and carrying an outer filter, a tubular adaptor having one end fitting round the inner end of the connecting sleeve, an inner filter at the other end of the tubular adaptor, and means for adjusting the output of the fan.
2. A unit as in Claim 1,wherein the output of the fan is controlled by an adjustable baffle.
3. A unit as in Claim 1, wherein the fan is a speed-reducible centrifugal fan.
4. A unit as in any one of Claims 1 to 3, wherein the fan is enclosed by a cage covered with filter material providing the outer filter.
5. A unit as in any one of Claims 1 to 4, wherein the outer filter is a "coarse" filter passing particles of 10 microns while the inner filter is a "fine" filter passing particles of 5 microns.
6. A unit as in Claim 5, wherein the inner filter is a sock enclosed within a cage secured to the adaptor.
7. A unit as in any one of the preceding Claims, wherein the connecting sleeve has a rectangular cross-section corresponding to the outlet of the fan, and the adaptor has a transition from a rectangular end fitting round the connecting sleeve to a circular end carrying the inner filter sock.
8. A unit as in Claim 7, wherein the adaptor includes a bend through 90" to enable the inner filter sock to extend parallel to the wall or ceiling.
9. A unit as in Claim 6, wherein the inner filter cage is comprised of two cylindrical portions, one end of one portion being closed and its open end being fastened to one open end of the other cylindrical portion, the completed cage being adapted to be suspended from the ceiling.
10. A filtered air supply unit for a spray booth substantially as herein before described with reference to Figures 1 to 3 of the accompanying drawings.
11. A spray booth provided with at least one filtered air supply unit as in any one of the preceding Claims.
12. A spray booth provided with a filtered air supply unit and substantially as hereinbefore described with reference to Figure 4 or Figure 5 or Figures 9 and 10 of the accompanying drawings.
13. A spray booth provided with two filtered air supply units and substantially as hereinbefore described with reference to Figure 7 or Figure 8 in combination with Figure 6 of the accompanying drawings.
GB08311504A 1982-04-30 1983-04-27 Controlling spray booth atmosphere Expired GB2119920B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08311504A GB2119920B (en) 1982-04-30 1983-04-27 Controlling spray booth atmosphere

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8212677 1982-04-30
GB08311504A GB2119920B (en) 1982-04-30 1983-04-27 Controlling spray booth atmosphere

Publications (3)

Publication Number Publication Date
GB8311504D0 GB8311504D0 (en) 1983-06-02
GB2119920A true GB2119920A (en) 1983-11-23
GB2119920B GB2119920B (en) 1985-10-30

Family

ID=26282707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08311504A Expired GB2119920B (en) 1982-04-30 1983-04-27 Controlling spray booth atmosphere

Country Status (1)

Country Link
GB (1) GB2119920B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179437B (en) * 1985-08-19 1989-09-13 Toshiba Kk Ventilator
WO1998017402A1 (en) * 1996-10-24 1998-04-30 Pangle, Sandy, J. Paint spray booth
CN111729772A (en) * 2020-07-07 2020-10-02 东营市万隆精铸金属有限公司 Intelligent spraying device for die machining

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179437B (en) * 1985-08-19 1989-09-13 Toshiba Kk Ventilator
WO1998017402A1 (en) * 1996-10-24 1998-04-30 Pangle, Sandy, J. Paint spray booth
US5820456A (en) * 1996-10-24 1998-10-13 Sandy J. Pangle Paint spray booth
CN111729772A (en) * 2020-07-07 2020-10-02 东营市万隆精铸金属有限公司 Intelligent spraying device for die machining

Also Published As

Publication number Publication date
GB2119920B (en) 1985-10-30
GB8311504D0 (en) 1983-06-02

Similar Documents

Publication Publication Date Title
US4846859A (en) Air cleaner
US4409889A (en) Modular clean room
US5454756A (en) Clean room ventilation system
US4560395A (en) Compact blower and filter assemblies for use in clean air environments
US4178159A (en) Clean room filter assembly
KR101518624B1 (en) Air purifying apparatus for air ventilation
US4217121A (en) Filter module with independent securing means for an outlet grille, and for a filter element behind the grille
KR102257588B1 (en) Filter device of diffuser for air conditioner
KR950704657A (en) Method and device for reducing vortices at a cleanroom celling
US4333750A (en) Filtration module with included illumination
GB2119920A (en) Controlling spray booth atmosphere
RU2122685C1 (en) Ventilation set incorporating filter performing sound absorbing, flow damping, and filtering functions
US3127629A (en) Built-in vacuum cleaning system
PT80022A (en) INSTALLATION FOR THE RAVALMENT OF BUILDINGS
CS203110B2 (en) Frash air pass for room aerotion
US4512241A (en) Plenum/vacuum chamber with duct connection for installation in cabinet of fixture to control air supply or return
DE59005198D1 (en) Air outlet with filter.
JPS62138635A (en) Full surface blow off ceiling facilities in vertical laminar flow type clean room
MXPA02008625A (en) Modular clean room filter system.
EP0115265A3 (en) Improvements in or relating to ventilators
US6308480B1 (en) Ceiling tile dust guard
US3166393A (en) Installed suction cleaner system
ATE164667T1 (en) DISCUSSION AIR DUCT FOR INDOOR AIR CONDITIONING SYSTEMS
JP2006297359A (en) Filter unit
JPS58110938A (en) Air cleaning unit

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee