GB2111190A - Ventilation equipment - Google Patents

Ventilation equipment Download PDF

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Publication number
GB2111190A
GB2111190A GB08136970A GB8136970A GB2111190A GB 2111190 A GB2111190 A GB 2111190A GB 08136970 A GB08136970 A GB 08136970A GB 8136970 A GB8136970 A GB 8136970A GB 2111190 A GB2111190 A GB 2111190A
Authority
GB
United Kingdom
Prior art keywords
ducting
sack
diffuser
holes
air
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
GB08136970A
Other versions
GB2111190B (en
Inventor
Colin James Robson
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB08136970A priority Critical patent/GB2111190B/en
Publication of GB2111190A publication Critical patent/GB2111190A/en
Application granted granted Critical
Publication of GB2111190B publication Critical patent/GB2111190B/en
Expired legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02Ducting arrangements
    • F24F13/06Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)

Abstract

A diffuser (2) comprises a generally cylindrical sack of foldable material, the sack being made up of a generally cylindrical wall component (3) and an end wall component (4). Both the components (3,4) are provided with holes (6,7). The diffuser can be used on the end of ducting (1) of a forced ventilation system in a mine to minimize the disturbance of dust by high velocity air discharging from the ducting. <IMAGE>

Description

SPECIFICATION Ventilation equipment This invention relates to ventilation equipment.
In particular, although not exclusively, the present invention relates to ventilation equipment used in underground mines.
It is known in underground mines for working regions to have only one access roadway and for such regions to be ventilated by forcing air into the regions along ducting. In order to control airborne dust in such a working region it is often necessary to install an extraction ventilation system comprising ducting, a fan for inducing air flow along the ducting and a dust collector for arresting dust from the induced air flow. For such a system to be effective it is necessary for the extraction system to induce air flow into itself and relies on dusty air in the working region not being disturbed by the effect of high velocity air discharging from the ducting of the main forced ventilation system. In order to overcome or reduce this problem diffusers have been fitted to the discharge section of the ducting.
Unfortunately, known diffusers tend to be heavy, bulky, liable to damage by passing equipment and relatively expensive.
An object of the present invention is to overcome the above disadvantages associated with known diffusers.
According to the present invention, a diffuser for air induced to flow along ducting comprises a generally cylindrical sack of foldable material which is adapted on one end for connection to the ducting and which is at least partially closed against air flow, at least portions of the sack wall being provided with holes for the passage of air which in use is discharged from the ducting.
Preferably, the holes are provided in a generally cylindrical wall component of the sack and in an end wall component partially closing the associated end of the sack.
Advantageously, the total area defined by the holes is at least as great as the cross-sectional area of the ducting.
Preferably, the total area defined by the holes is at least twice as great as the cross-sectional area of the ducting.
Conveniently, the total area defined by the holes provided in the end wall component of the sack constitutes approximately one tenth of the toal area defined by all the holes provided in the sack walls.
Conveniently, the end wall component is detachable from the generally cylindrical wall component.
By way of example only, one embodiment of the present invention will be described with reference to the accompanying drawing which is a diagrammatic perspective view of a sack constructed in accordance with the present invention.
The accompanying drawing shows one end of a section 1 of air flow ducting installed along an undergound mine roadway. A fan (not shown) is arranged to blow air into a working region in the mine causing air to be directed along the ducting towards the section 1 (in a direction indicated by arrow X) where it is discharged into the working region. A diffuser 2 is mounted on the downstream end of the section 1 in order to defuse the air discharging from the ducting. The diffuser 2 comprises a generally cylindrical sack of foldable material constituted by a generally cylindrical wall component 3 and an end wall component 4 detachably mounted on to one end of the generally cylindrical wall component 3, the component 3 being mounted at its other end on to the section 1.The mounting means for both these connections comprises rings provided on the associated ends of the section 1 and of the diffuser components 3 and 4, and clamp means for holding two adjacent rings connected together.
The walls of the diffuser sack components 3 and 4 are provided with holes 6 and 7, respectively, for the passage of air flow discharging from the ducting. The total area defined by the holes is at least as great as the cross-sectional area of the ducting 1 and frequently the total area defined by the holes is at least twice as great as the cross-sectional area of the ducting 1.
Conveniently, the total area defined by the holes provided in the end wall component 4 of the diffusers constitutes approximately one tenth of the total area defined by all the holes provided in the sack walls.
In use, the action of the diffuser is to at least partially close the discharge end of the ducting to avoid the aforementioned problems associated with relatively high air flow discharging towards a region of dust production.
From the above description it will be appreciated that the present invention provides an air diffuser which collapses and is light to facilitate easy handling and assembly and which is simple, robust and inexpensive, the diffuser tending to overcome the problems associated with prior known diffusers.
Claims
1. A diffuser for air induced to flow along ducting comprising a generally cylindrical sack of foldable material which is adapted on one end for connection to the ducting and which is at least partially closed against air flow, at least portions of the sack wall being provided with holes for the passage of air which in use is discharged from the ducting.
2. A diffuser as claimed in claim 1, in which the holes are provided in a generally cylindrical wall component of the sack and in an end wall component partially closing the associated end of the sack.
3. A diffuser as claimed in claim 2, in which the total area defined by the holes is at least as great as the cross-sectional area of the ducting.
4. A diffuser as claimed in claim 2, in which the total area defined by the holes is at least twice as
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Ventilation equipment This invention relates to ventilation equipment. In particular, although not exclusively, the present invention relates to ventilation equipment used in underground mines. It is known in underground mines for working regions to have only one access roadway and for such regions to be ventilated by forcing air into the regions along ducting. In order to control airborne dust in such a working region it is often necessary to install an extraction ventilation system comprising ducting, a fan for inducing air flow along the ducting and a dust collector for arresting dust from the induced air flow. For such a system to be effective it is necessary for the extraction system to induce air flow into itself and relies on dusty air in the working region not being disturbed by the effect of high velocity air discharging from the ducting of the main forced ventilation system. In order to overcome or reduce this problem diffusers have been fitted to the discharge section of the ducting. Unfortunately, known diffusers tend to be heavy, bulky, liable to damage by passing equipment and relatively expensive. An object of the present invention is to overcome the above disadvantages associated with known diffusers. According to the present invention, a diffuser for air induced to flow along ducting comprises a generally cylindrical sack of foldable material which is adapted on one end for connection to the ducting and which is at least partially closed against air flow, at least portions of the sack wall being provided with holes for the passage of air which in use is discharged from the ducting. Preferably, the holes are provided in a generally cylindrical wall component of the sack and in an end wall component partially closing the associated end of the sack. Advantageously, the total area defined by the holes is at least as great as the cross-sectional area of the ducting. Preferably, the total area defined by the holes is at least twice as great as the cross-sectional area of the ducting. Conveniently, the total area defined by the holes provided in the end wall component of the sack constitutes approximately one tenth of the toal area defined by all the holes provided in the sack walls. Conveniently, the end wall component is detachable from the generally cylindrical wall component. By way of example only, one embodiment of the present invention will be described with reference to the accompanying drawing which is a diagrammatic perspective view of a sack constructed in accordance with the present invention. The accompanying drawing shows one end of a section 1 of air flow ducting installed along an undergound mine roadway. A fan (not shown) is arranged to blow air into a working region in the mine causing air to be directed along the ducting towards the section 1 (in a direction indicated by arrow X) where it is discharged into the working region. A diffuser 2 is mounted on the downstream end of the section 1 in order to defuse the air discharging from the ducting. The diffuser 2 comprises a generally cylindrical sack of foldable material constituted by a generally cylindrical wall component 3 and an end wall component 4 detachably mounted on to one end of the generally cylindrical wall component 3, the component 3 being mounted at its other end on to the section 1.The mounting means for both these connections comprises rings provided on the associated ends of the section 1 and of the diffuser components 3 and 4, and clamp means for holding two adjacent rings connected together. The walls of the diffuser sack components 3 and 4 are provided with holes 6 and 7, respectively, for the passage of air flow discharging from the ducting. The total area defined by the holes is at least as great as the cross-sectional area of the ducting 1 and frequently the total area defined by the holes is at least twice as great as the cross-sectional area of the ducting 1. Conveniently, the total area defined by the holes provided in the end wall component 4 of the diffusers constitutes approximately one tenth of the total area defined by all the holes provided in the sack walls. In use, the action of the diffuser is to at least partially close the discharge end of the ducting to avoid the aforementioned problems associated with relatively high air flow discharging towards a region of dust production. From the above description it will be appreciated that the present invention provides an air diffuser which collapses and is light to facilitate easy handling and assembly and which is simple, robust and inexpensive, the diffuser tending to overcome the problems associated with prior known diffusers. Claims
1. A diffuser for air induced to flow along ducting comprising a generally cylindrical sack of foldable material which is adapted on one end for connection to the ducting and which is at least partially closed against air flow, at least portions of the sack wall being provided with holes for the passage of air which in use is discharged from the ducting.
2. A diffuser as claimed in claim 1, in which the holes are provided in a generally cylindrical wall component of the sack and in an end wall component partially closing the associated end of the sack.
3. A diffuser as claimed in claim 2, in which the total area defined by the holes is at least as great as the cross-sectional area of the ducting.
4. A diffuser as claimed in claim 2, in which the total area defined by the holes is at least twice as great as the cross-sectional area of the ducting.
5. A diffuser as claimed in claim 2, 3 or 4, in which the total area defined by the holes provided in the end wall component of the sack constitutes approximately one tenth of the total area defined by all the holes provided in the sack walls.
6. A diffuser as claimed in claim 2, 3, 4 or 5, in which the end wall component is detachable from the generally cylindrical wall component.
7. A diffuser for air induced to flow along ducting substantially as described herein and substantially as shown in the accompanying drawings.
GB08136970A 1981-12-08 1981-12-08 Ventilation equipment Expired GB2111190B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08136970A GB2111190B (en) 1981-12-08 1981-12-08 Ventilation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08136970A GB2111190B (en) 1981-12-08 1981-12-08 Ventilation equipment

Publications (2)

Publication Number Publication Date
GB2111190A true GB2111190A (en) 1983-06-29
GB2111190B GB2111190B (en) 1985-01-30

Family

ID=10526445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08136970A Expired GB2111190B (en) 1981-12-08 1981-12-08 Ventilation equipment

Country Status (1)

Country Link
GB (1) GB2111190B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3743300A1 (en) * 1987-12-19 1989-06-29 Turbon Tunzini Klimatechnik Air distributor
IT201600127985A1 (en) * 2016-12-19 2018-06-19 Marco Zambolin DIFFUSER, AIR TREATMENT PLANT INCLUDING SUCH DIFFUSER AND USE OF SUCH DIFFUSER FOR AIR TREATMENT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3743300A1 (en) * 1987-12-19 1989-06-29 Turbon Tunzini Klimatechnik Air distributor
IT201600127985A1 (en) * 2016-12-19 2018-06-19 Marco Zambolin DIFFUSER, AIR TREATMENT PLANT INCLUDING SUCH DIFFUSER AND USE OF SUCH DIFFUSER FOR AIR TREATMENT
EP3343119A1 (en) * 2016-12-19 2018-07-04 Marco Zambolin Air diffuser

Also Published As

Publication number Publication date
GB2111190B (en) 1985-01-30

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee