GB2111125A - Apparatus for inducing fluid flow by Coanda effect - Google Patents

Apparatus for inducing fluid flow by Coanda effect Download PDF

Info

Publication number
GB2111125A
GB2111125A GB08229120A GB8229120A GB2111125A GB 2111125 A GB2111125 A GB 2111125A GB 08229120 A GB08229120 A GB 08229120A GB 8229120 A GB8229120 A GB 8229120A GB 2111125 A GB2111125 A GB 2111125A
Authority
GB
United Kingdom
Prior art keywords
body
apparatus
slot
flow
coanda
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.)
Withdrawn
Application number
GB08229120A
Inventor
Christopher Frederick Jones
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.)
Beavair Ltd
Original Assignee
* BEAVAIR LIMITED
BEAVAIR LIMITED
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
Priority to GB8130885 priority Critical
Application filed by * BEAVAIR LIMITED, BEAVAIR LIMITED filed Critical * BEAVAIR LIMITED
Priority to GB08229120A priority patent/GB2111125A/en
Publication of GB2111125A publication Critical patent/GB2111125A/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/48Control
    • F04F5/50Control of compressing pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids

Abstract

An apparatus for inducing air flow for ventilation purposes in mines, refineries and the like hazardous environments comprises a first tubular body 1, which defines the air flow duct A, having a mouth 2 which is flared to form a venturi shape and which defines an annular lip 3. A second body 4 is coaxially located around the first body 1 and secured by a screw threading 5 which permits relative axial movement by rotation of body 4 about body 1. The body 4 has a tapered inlet 7 forming a venturi surface with mouth 2 and a lip 8 which defines, with lip 3, an annular coanda slot 9 communicating with chamber 10 fed with pressure gas. Gas flow out of slot 9 induces flow through the body in direction A. <IMAGE>

Description

SPECIFICATION Apparatus for inducing fluid flow by Coanda effect This invention relates to an apparatus for inducing fluid flow by Coanda effect whereby flow of air, such as for ventilation in aggressive environments, may be induced using a high energy flow. Specification G.B. 863124 discloses an apparatus mainly intended for inducing flow in gas turbine power units using a convergent-divergent venturi passage requiring an insert neck. Specifications 1411083 and 1403188 disclose apparatus primarily for dilution of internal combustion engine exhaust gases.

It is an object of this invention to provide an apparatus of the kind described which is of simplified construction wherein the Coanda slot is adjustable and readily capable of calibration.

According to this invention there is provided an apparatus for inducing fluid flow by Coanda effect comprising a tubular first body defining a fluid flow duct and having a flared mouth with an annular lip, a second body coaxial with the first body and secured thereto in an axially movable manner, the second body having a tapered inlet with an inwardly directed annular lip forming, with the lip of the first body, an annular Coanda slot, said slot communicating with an annular chamber defined between the first and second bodies with the chamber having an inlet connection for flow inducing fluid medium which is fed under pressure through the Coanda slot.

Preferably the first and second bodies are secured together through a screw threaded coupling permitting accurate relative axial movement whereby the dimension of the Coanda slot may be set. The coupling will preferably include a locking means, such as a set screw.

The first body may include an internal threading at the end opposite the mouth for connection with an exhaust funnel duct.

An embodiment according to this invention is shown by way of example in the accompanying drawing showing an axial section through a preferred construction of apparatus.

In the drawing an apparatus for inducing air flow for ventilation purposes in mines, refineries and the like hazardous environments comprises a first tubular body 1, which defines the air flow duct A, having a mouth 2 which is flared to form a venturi shape and which defines an annular lip 3. A second body 4 is coaxially located around the first body 1 and secured by a screw threading 5 which permits relative axial movement by rotation of body 4 about body 1. The two bodies may be locked together by set screws 6.

The second body 4 has a tapered bell mouthed inlet 7, which is shaped to form a venturi surface coextensive with the mouth 2.

The inlet 7 has an inwardly directed annular lip 8 which forms, with the lip 3 of the first body 1, a Coanda slot 9 which is annular. The slot 9 is in communication with an annular chamber 10 defined between the two bodies 1 and 4 and the chamber has an inlet connec tion 11 provided in a lower extension part of the body 4.

The body 1 has an internal screw threading 1 2 at the rear which serves for connection with a funnel shaped ducting 1 3.

Compressed air is fed into the chamber 10 through connection 11. This air is circulated I around the chamber and escaped through the slot 9 to cause a vacuum in front of the slot which induces the flow of ambient air creating an output flow or air in excess of the input.

The amount of air that is induced is deter mined by the width of the slot which can be adjusted by means of thread 5, and the width of the slot is measured by the use of feeler gauges. When the correct gap setting is reached the body 4 is locked by screws 6.

The funnel 1 3 is fitted to the body 1 for directing the flow of air and there is also provision for an electrical earth point at 1 4.

1. An apparatus for inducing fluid flow by Coanda effect comprising a tubular first body defining a fluid duct and having a flared mouth with an annular lip, a second body coaxial with the first body and secured thereto in an axially movable manner, the second body having a tapered inlet with an inwardly directed annular lip forming, with the lip of the first body, an annular Coanda slot, said slot communicating with an annular chamber defined between the first and second bodies with the chamber having an inlet connection for flow inducing medium which is fed under pressure through the Coanda slot.

2. An apparatus in accordance with Claim 1, wherein the first and second bodies are secured together through a screw threaded coupling permitting accurate relative axial movement whereby the dimension of the Coanda slot may be set.

3. An apparatus in accordance with Claim 2, wherein the coupling has a locking means to secure same against axial movement.

4. An apparatus in accordance with any preceding Claim, wherein the first body in cludes an internal threading at the end oppo site the mouth for connection with an exhaust funnel duct.

5. An apparatus for the purpose herein set forth and substantially as described and illus trated in the drawing.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Apparatus for inducing fluid flow by Coanda effect This invention relates to an apparatus for inducing fluid flow by Coanda effect whereby flow of air, such as for ventilation in aggressive environments, may be induced using a high energy flow. Specification G.B. 863124 discloses an apparatus mainly intended for inducing flow in gas turbine power units using a convergent-divergent venturi passage requiring an insert neck. Specifications 1411083 and 1403188 disclose apparatus primarily for dilution of internal combustion engine exhaust gases. It is an object of this invention to provide an apparatus of the kind described which is of simplified construction wherein the Coanda slot is adjustable and readily capable of calibration. According to this invention there is provided an apparatus for inducing fluid flow by Coanda effect comprising a tubular first body defining a fluid flow duct and having a flared mouth with an annular lip, a second body coaxial with the first body and secured thereto in an axially movable manner, the second body having a tapered inlet with an inwardly directed annular lip forming, with the lip of the first body, an annular Coanda slot, said slot communicating with an annular chamber defined between the first and second bodies with the chamber having an inlet connection for flow inducing fluid medium which is fed under pressure through the Coanda slot. Preferably the first and second bodies are secured together through a screw threaded coupling permitting accurate relative axial movement whereby the dimension of the Coanda slot may be set. The coupling will preferably include a locking means, such as a set screw. The first body may include an internal threading at the end opposite the mouth for connection with an exhaust funnel duct. An embodiment according to this invention is shown by way of example in the accompanying drawing showing an axial section through a preferred construction of apparatus. In the drawing an apparatus for inducing air flow for ventilation purposes in mines, refineries and the like hazardous environments comprises a first tubular body 1, which defines the air flow duct A, having a mouth 2 which is flared to form a venturi shape and which defines an annular lip 3. A second body 4 is coaxially located around the first body 1 and secured by a screw threading 5 which permits relative axial movement by rotation of body 4 about body 1. The two bodies may be locked together by set screws 6. The second body 4 has a tapered bell mouthed inlet 7, which is shaped to form a venturi surface coextensive with the mouth 2. The inlet 7 has an inwardly directed annular lip 8 which forms, with the lip 3 of the first body 1, a Coanda slot 9 which is annular. The slot 9 is in communication with an annular chamber 10 defined between the two bodies 1 and 4 and the chamber has an inlet connec tion 11 provided in a lower extension part of the body 4. The body 1 has an internal screw threading 1 2 at the rear which serves for connection with a funnel shaped ducting 1 3. Compressed air is fed into the chamber 10 through connection 11. This air is circulated I around the chamber and escaped through the slot 9 to cause a vacuum in front of the slot which induces the flow of ambient air creating an output flow or air in excess of the input. The amount of air that is induced is deter mined by the width of the slot which can be adjusted by means of thread 5, and the width of the slot is measured by the use of feeler gauges. When the correct gap setting is reached the body 4 is locked by screws 6. The funnel 1 3 is fitted to the body 1 for directing the flow of air and there is also provision for an electrical earth point at 1 4. CLAIMS
1. An apparatus for inducing fluid flow by Coanda effect comprising a tubular first body defining a fluid duct and having a flared mouth with an annular lip, a second body coaxial with the first body and secured thereto in an axially movable manner, the second body having a tapered inlet with an inwardly directed annular lip forming, with the lip of the first body, an annular Coanda slot, said slot communicating with an annular chamber defined between the first and second bodies with the chamber having an inlet connection for flow inducing medium which is fed under pressure through the Coanda slot.
2. An apparatus in accordance with Claim 1, wherein the first and second bodies are secured together through a screw threaded coupling permitting accurate relative axial movement whereby the dimension of the Coanda slot may be set.
3. An apparatus in accordance with Claim 2, wherein the coupling has a locking means to secure same against axial movement.
4. An apparatus in accordance with any preceding Claim, wherein the first body in cludes an internal threading at the end oppo site the mouth for connection with an exhaust funnel duct.
5. An apparatus for the purpose herein set forth and substantially as described and illus trated in the drawing.
GB08229120A 1981-10-13 1982-10-12 Apparatus for inducing fluid flow by Coanda effect Withdrawn GB2111125A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8130885 1981-10-13
GB08229120A GB2111125A (en) 1981-10-13 1982-10-12 Apparatus for inducing fluid flow by Coanda effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08229120A GB2111125A (en) 1981-10-13 1982-10-12 Apparatus for inducing fluid flow by Coanda effect

Publications (1)

Publication Number Publication Date
GB2111125A true GB2111125A (en) 1983-06-29

Family

ID=26280958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08229120A Withdrawn GB2111125A (en) 1981-10-13 1982-10-12 Apparatus for inducing fluid flow by Coanda effect

Country Status (1)

Country Link
GB (1) GB2111125A (en)

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179099A (en) * 1985-08-12 1987-02-25 Vacuum Pneumatic Transfer Equi Vacuum aerator feed nozzle
US4721126A (en) * 1985-09-09 1988-01-26 Kiyoshi Horii Method of generating spiral fluid flow and the device therefor
GB2216644A (en) * 1988-03-10 1989-10-11 Farleydene Ltd Autoclave assemblies
WO2010046691A1 (en) 2008-10-25 2010-04-29 Dyson Technology Limited A fan
JP2010203441A (en) * 2009-03-04 2010-09-16 Dyson Technology Ltd Blower assembly
AU2010101267B4 (en) * 2008-09-23 2011-01-06 Dyson Technology Limited A fan
JP2011099445A (en) * 2009-11-06 2011-05-19 Dyson Technology Ltd Fan
US7972111B2 (en) 2009-03-04 2011-07-05 Dyson Technology Limited Fan assembly
US8092166B2 (en) 2008-12-11 2012-01-10 Dyson Technology Limited Fan
JP2012037229A (en) * 2010-08-06 2012-02-23 Dyson Technology Ltd Fan assembly
US8246317B2 (en) 2009-03-04 2012-08-21 Dyson Technology Limited Fan assembly
US8308445B2 (en) 2007-09-04 2012-11-13 Dyson Technology Limited Fan
CN102797709A (en) * 2011-05-26 2012-11-28 任文华 Fan
US8348596B2 (en) 2009-03-04 2013-01-08 Dyson Technology Limited Fan assembly
US8356804B2 (en) 2009-03-04 2013-01-22 Dyson Technology Limited Humidifying apparatus
US8366403B2 (en) 2010-08-06 2013-02-05 Dyson Technology Limited Fan assembly
US8403640B2 (en) 2009-03-04 2013-03-26 Dyson Technology Limited Fan assembly
US8408869B2 (en) 2009-03-04 2013-04-02 Dyson Technology Limited Fan assembly
US8430624B2 (en) 2009-03-04 2013-04-30 Dyson Technology Limited Fan assembly
US8469658B2 (en) 2009-03-04 2013-06-25 Dyson Technology Limited Fan
US8469660B2 (en) 2009-03-04 2013-06-25 Dyson Technology Limited Fan assembly
US8613601B2 (en) 2009-03-04 2013-12-24 Dyson Technology Limited Fan assembly
US8721286B2 (en) 2009-03-04 2014-05-13 Dyson Technology Limited Fan assembly
CN101424279B (en) 2007-09-04 2014-05-28 戴森技术有限公司 Fan
US8770946B2 (en) 2010-03-23 2014-07-08 Dyson Technology Limited Accessory for a fan
US8873940B2 (en) 2010-08-06 2014-10-28 Dyson Technology Limited Fan assembly
US8882451B2 (en) 2010-03-23 2014-11-11 Dyson Technology Limited Fan
US8894354B2 (en) 2010-09-07 2014-11-25 Dyson Technology Limited Fan
US8967979B2 (en) 2010-10-18 2015-03-03 Dyson Technology Limited Fan assembly
US8967980B2 (en) 2010-10-18 2015-03-03 Dyson Technology Limited Fan assembly
US9011116B2 (en) 2010-05-27 2015-04-21 Dyson Technology Limited Device for blowing air by means of a nozzle assembly
USD728092S1 (en) 2013-08-01 2015-04-28 Dyson Technology Limited Fan
USD728770S1 (en) 2013-08-01 2015-05-05 Dyson Technology Limited Fan
USD728769S1 (en) 2013-08-01 2015-05-05 Dyson Technology Limited Fan
USD729375S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729374S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729372S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729376S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729373S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729925S1 (en) 2013-03-07 2015-05-19 Dyson Technology Limited Fan
US9127855B2 (en) 2011-07-27 2015-09-08 Dyson Technology Limited Fan assembly
US9127689B2 (en) 2009-03-04 2015-09-08 Dyson Technology Limited Fan assembly
US9151299B2 (en) 2012-02-06 2015-10-06 Dyson Technology Limited Fan
USD746425S1 (en) 2013-01-18 2015-12-29 Dyson Technology Limited Humidifier
USD746966S1 (en) 2013-01-18 2016-01-05 Dyson Technology Limited Humidifier
USD747450S1 (en) 2013-01-18 2016-01-12 Dyson Technology Limited Humidifier
US9249809B2 (en) 2012-02-06 2016-02-02 Dyson Technology Limited Fan
USD749231S1 (en) 2013-01-18 2016-02-09 Dyson Technology Limited Humidifier
US9283573B2 (en) 2012-02-06 2016-03-15 Dyson Technology Limited Fan assembly
US9328739B2 (en) 2012-01-19 2016-05-03 Dyson Technology Limited Fan
US9366449B2 (en) 2012-03-06 2016-06-14 Dyson Technology Limited Humidifying apparatus
US9410711B2 (en) 2013-09-26 2016-08-09 Dyson Technology Limited Fan assembly
US9458853B2 (en) 2011-07-27 2016-10-04 Dyson Technology Limited Fan assembly
US9513028B2 (en) 2009-03-04 2016-12-06 Dyson Technology Limited Fan assembly
US9568006B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
US9568021B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
US9599356B2 (en) 2014-07-29 2017-03-21 Dyson Technology Limited Humidifying apparatus
US9732763B2 (en) 2012-07-11 2017-08-15 Dyson Technology Limited Fan assembly
US9745981B2 (en) 2011-11-11 2017-08-29 Dyson Technology Limited Fan assembly
US9745996B2 (en) 2010-12-02 2017-08-29 Dyson Technology Limited Fan
US9752789B2 (en) 2012-03-06 2017-09-05 Dyson Technology Limited Humidifying apparatus
US9797612B2 (en) 2013-01-29 2017-10-24 Dyson Technology Limited Fan assembly
US9797414B2 (en) 2013-07-09 2017-10-24 Dyson Technology Limited Fan assembly
US9797613B2 (en) 2012-03-06 2017-10-24 Dyson Technology Limited Humidifying apparatus
US9822778B2 (en) 2012-04-19 2017-11-21 Dyson Technology Limited Fan assembly
US9903602B2 (en) 2014-07-29 2018-02-27 Dyson Technology Limited Humidifying apparatus
US9927136B2 (en) 2012-03-06 2018-03-27 Dyson Technology Limited Fan assembly
US9926804B2 (en) 2010-11-02 2018-03-27 Dyson Technology Limited Fan assembly
WO2018071965A1 (en) * 2016-10-18 2018-04-26 VTEX Industries Pty Ltd Mine ventilation assembly
US9982677B2 (en) 2014-07-29 2018-05-29 Dyson Technology Limited Fan assembly
US10094392B2 (en) 2011-11-24 2018-10-09 Dyson Technology Limited Fan assembly
US10100836B2 (en) 2010-10-13 2018-10-16 Dyson Technology Limited Fan assembly
US10145583B2 (en) 2012-04-04 2018-12-04 Dyson Technology Limited Heating apparatus

Cited By (112)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179099A (en) * 1985-08-12 1987-02-25 Vacuum Pneumatic Transfer Equi Vacuum aerator feed nozzle
GB2179099B (en) * 1985-08-12 1989-07-26 Vacuum Pneumatic Transfer Equi Vacuum aerator feed nozzle
US4721126A (en) * 1985-09-09 1988-01-26 Kiyoshi Horii Method of generating spiral fluid flow and the device therefor
GB2216644A (en) * 1988-03-10 1989-10-11 Farleydene Ltd Autoclave assemblies
GB2216644B (en) * 1988-03-10 1992-08-19 Farleydene Ltd Improvements in or relating to autoclaves
US9249810B2 (en) 2007-09-04 2016-02-02 Dyson Technology Limited Fan
US8308445B2 (en) 2007-09-04 2012-11-13 Dyson Technology Limited Fan
US8764412B2 (en) 2007-09-04 2014-07-01 Dyson Technology Limited Fan
US8403650B2 (en) 2007-09-04 2013-03-26 Dyson Technology Limited Fan
CN101424279B (en) 2007-09-04 2014-05-28 戴森技术有限公司 Fan
AU2010101267C4 (en) * 2008-09-23 2012-05-17 Dyson Technology Limited A fan
AU2009295640B2 (en) * 2008-09-23 2011-06-30 Dyson Technology Limited A fan
AU2010101267B4 (en) * 2008-09-23 2011-01-06 Dyson Technology Limited A fan
US8348629B2 (en) 2008-09-23 2013-01-08 Dyston Technology Limited Fan
WO2010046691A1 (en) 2008-10-25 2010-04-29 Dyson Technology Limited A fan
AU2010101277C4 (en) * 2008-10-25 2012-03-22 Dyson Technology Limited A fan
AU2009306160B2 (en) * 2008-10-25 2011-12-08 Dyson Technology Limited A fan
AU2010101277B4 (en) * 2008-10-25 2011-03-17 Dyson Technology Limited A fan
US9816531B2 (en) 2008-10-25 2017-11-14 Dyson Technology Limited Fan utilizing coanda surface
EP3130808A1 (en) * 2008-10-25 2017-02-15 Dyson Technology Limited A fan
US10145388B2 (en) 2008-10-25 2018-12-04 Dyson Technology Limited Fan with a filter
US8092166B2 (en) 2008-12-11 2012-01-10 Dyson Technology Limited Fan
CN101749289B (en) 2008-12-11 2013-07-03 戴森技术有限公司 Fan
US8356804B2 (en) 2009-03-04 2013-01-22 Dyson Technology Limited Humidifying apparatus
US8348596B2 (en) 2009-03-04 2013-01-08 Dyson Technology Limited Fan assembly
US8348597B2 (en) 2009-03-04 2013-01-08 Dyson Technology Limited Fan assembly
US20120308375A1 (en) * 2009-03-04 2012-12-06 Dyson Technology Limited Fan assembly
JP2013015144A (en) * 2009-03-04 2013-01-24 Dyson Technology Ltd Fan assembly
US8308432B2 (en) 2009-03-04 2012-11-13 Dyson Technology Limited Fan assembly
US8403640B2 (en) 2009-03-04 2013-03-26 Dyson Technology Limited Fan assembly
US8246317B2 (en) 2009-03-04 2012-08-21 Dyson Technology Limited Fan assembly
US8408869B2 (en) 2009-03-04 2013-04-02 Dyson Technology Limited Fan assembly
US8430624B2 (en) 2009-03-04 2013-04-30 Dyson Technology Limited Fan assembly
US9599368B2 (en) 2009-03-04 2017-03-21 Dyson Technology Limited Nozzle for bladeless fan assembly with heater
US8197226B2 (en) 2009-03-04 2012-06-12 Dyson Technology Limited Fan assembly
US8469658B2 (en) 2009-03-04 2013-06-25 Dyson Technology Limited Fan
US8469660B2 (en) 2009-03-04 2013-06-25 Dyson Technology Limited Fan assembly
US9127689B2 (en) 2009-03-04 2015-09-08 Dyson Technology Limited Fan assembly
US8529203B2 (en) 2009-03-04 2013-09-10 Dyson Technology Limited Fan assembly
US8613601B2 (en) 2009-03-04 2013-12-24 Dyson Technology Limited Fan assembly
US8684687B2 (en) 2009-03-04 2014-04-01 Dyson Technology Limited Fan assembly
US8708650B2 (en) 2009-03-04 2014-04-29 Dyson Technology Limited Fan assembly
US8714937B2 (en) 2009-03-04 2014-05-06 Dyson Technology Limited Fan assembly
US8721286B2 (en) 2009-03-04 2014-05-13 Dyson Technology Limited Fan assembly
US10221860B2 (en) 2009-03-04 2019-03-05 Dyson Technology Limited Fan assembly
JP2010203441A (en) * 2009-03-04 2010-09-16 Dyson Technology Ltd Blower assembly
US7972111B2 (en) 2009-03-04 2011-07-05 Dyson Technology Limited Fan assembly
US9513028B2 (en) 2009-03-04 2016-12-06 Dyson Technology Limited Fan assembly
US8784071B2 (en) * 2009-03-04 2014-07-22 Dyson Technology Limited Fan assembly
US8784049B2 (en) 2009-03-04 2014-07-22 Dyson Technology Limited Fan
US8783663B2 (en) 2009-03-04 2014-07-22 Dyson Technology Limited Humidifying apparatus
US10006657B2 (en) 2009-03-04 2018-06-26 Dyson Technology Limited Fan assembly
US8469655B2 (en) 2009-03-04 2013-06-25 Dyson Technology Limited Fan assembly
US8932028B2 (en) 2009-03-04 2015-01-13 Dyson Technology Limited Fan assembly
JP2011099445A (en) * 2009-11-06 2011-05-19 Dyson Technology Ltd Fan
US8454322B2 (en) 2009-11-06 2013-06-04 Dyson Technology Limited Fan having a magnetically attached remote control
US9004878B2 (en) 2009-11-06 2015-04-14 Dyson Technology Limited Fan having a magnetically attached remote control
US8770946B2 (en) 2010-03-23 2014-07-08 Dyson Technology Limited Accessory for a fan
US8882451B2 (en) 2010-03-23 2014-11-11 Dyson Technology Limited Fan
US9011116B2 (en) 2010-05-27 2015-04-21 Dyson Technology Limited Device for blowing air by means of a nozzle assembly
US8873940B2 (en) 2010-08-06 2014-10-28 Dyson Technology Limited Fan assembly
US8366403B2 (en) 2010-08-06 2013-02-05 Dyson Technology Limited Fan assembly
US8734094B2 (en) 2010-08-06 2014-05-27 Dyson Technology Limited Fan assembly
JP2012037229A (en) * 2010-08-06 2012-02-23 Dyson Technology Ltd Fan assembly
US9745988B2 (en) 2010-09-07 2017-08-29 Dyson Technology Limited Fan
US8894354B2 (en) 2010-09-07 2014-11-25 Dyson Technology Limited Fan
US10100836B2 (en) 2010-10-13 2018-10-16 Dyson Technology Limited Fan assembly
US8967979B2 (en) 2010-10-18 2015-03-03 Dyson Technology Limited Fan assembly
US8967980B2 (en) 2010-10-18 2015-03-03 Dyson Technology Limited Fan assembly
US9926804B2 (en) 2010-11-02 2018-03-27 Dyson Technology Limited Fan assembly
US9745996B2 (en) 2010-12-02 2017-08-29 Dyson Technology Limited Fan
CN102797709A (en) * 2011-05-26 2012-11-28 任文华 Fan
US10094581B2 (en) 2011-07-27 2018-10-09 Dyson Technology Limited Fan assembly
US9458853B2 (en) 2011-07-27 2016-10-04 Dyson Technology Limited Fan assembly
US9127855B2 (en) 2011-07-27 2015-09-08 Dyson Technology Limited Fan assembly
US9335064B2 (en) 2011-07-27 2016-05-10 Dyson Technology Limited Fan assembly
US9291361B2 (en) 2011-07-27 2016-03-22 Dyson Technology Limited Fan assembly
US9745981B2 (en) 2011-11-11 2017-08-29 Dyson Technology Limited Fan assembly
US10094392B2 (en) 2011-11-24 2018-10-09 Dyson Technology Limited Fan assembly
US9328739B2 (en) 2012-01-19 2016-05-03 Dyson Technology Limited Fan
US9249809B2 (en) 2012-02-06 2016-02-02 Dyson Technology Limited Fan
US9151299B2 (en) 2012-02-06 2015-10-06 Dyson Technology Limited Fan
US9283573B2 (en) 2012-02-06 2016-03-15 Dyson Technology Limited Fan assembly
US9366449B2 (en) 2012-03-06 2016-06-14 Dyson Technology Limited Humidifying apparatus
US9797613B2 (en) 2012-03-06 2017-10-24 Dyson Technology Limited Humidifying apparatus
US9927136B2 (en) 2012-03-06 2018-03-27 Dyson Technology Limited Fan assembly
US9752789B2 (en) 2012-03-06 2017-09-05 Dyson Technology Limited Humidifying apparatus
US10145583B2 (en) 2012-04-04 2018-12-04 Dyson Technology Limited Heating apparatus
US9822778B2 (en) 2012-04-19 2017-11-21 Dyson Technology Limited Fan assembly
US9568006B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
US9568021B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
US9732763B2 (en) 2012-07-11 2017-08-15 Dyson Technology Limited Fan assembly
USD746425S1 (en) 2013-01-18 2015-12-29 Dyson Technology Limited Humidifier
USD746966S1 (en) 2013-01-18 2016-01-05 Dyson Technology Limited Humidifier
USD749231S1 (en) 2013-01-18 2016-02-09 Dyson Technology Limited Humidifier
USD747450S1 (en) 2013-01-18 2016-01-12 Dyson Technology Limited Humidifier
US9797612B2 (en) 2013-01-29 2017-10-24 Dyson Technology Limited Fan assembly
USD729374S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729375S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729372S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729376S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729373S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729925S1 (en) 2013-03-07 2015-05-19 Dyson Technology Limited Fan
US9797414B2 (en) 2013-07-09 2017-10-24 Dyson Technology Limited Fan assembly
USD728769S1 (en) 2013-08-01 2015-05-05 Dyson Technology Limited Fan
USD728092S1 (en) 2013-08-01 2015-04-28 Dyson Technology Limited Fan
USD728770S1 (en) 2013-08-01 2015-05-05 Dyson Technology Limited Fan
US9410711B2 (en) 2013-09-26 2016-08-09 Dyson Technology Limited Fan assembly
US9599356B2 (en) 2014-07-29 2017-03-21 Dyson Technology Limited Humidifying apparatus
US9903602B2 (en) 2014-07-29 2018-02-27 Dyson Technology Limited Humidifying apparatus
US9982677B2 (en) 2014-07-29 2018-05-29 Dyson Technology Limited Fan assembly
WO2018071965A1 (en) * 2016-10-18 2018-04-26 VTEX Industries Pty Ltd Mine ventilation assembly

Similar Documents

Publication Publication Date Title
US3266552A (en) Burner for producing a stable flame with a high concentration of heat stabilized by a shock wave
US2543517A (en) Apparatus for combining and emplacing cementitious substances
GB1155296A (en) Improvements in and relating to Pulverized Fuel Burners.
EP0801265A3 (en) Combustion apparatus
US4791266A (en) Apparatus for supplying electric current to a welding or cutting torch
US4411388A (en) Apparatus for conveying lightweight particulate matter
JPH02275316A (en) Method and device for continuously extracting partial amount from gas flow
GB1490145A (en) Gas turbine engine
JPS5677716A (en) Detector for amount of sucked air
GB1137985A (en) Improvements in and relating to gaseous fuel burners
US4493309A (en) Fuel fired heating element
US2659201A (en) Gas turbine combustion chamber with provision for turbulent mixing of air and fuel
JPH0485A (en) Tube joint
GB1347697A (en) Gas turbine engine combustion chamber
US7913489B2 (en) Device for lowering tail pipe exhaust temperature
GB1534441A (en) Apparatus for feeding a flexible tube through a conduit
EP0257834B1 (en) Jet pump
GB1516868A (en) Combustion chamber for gas turbine engines
Potter Jr et al. Effect of pressure and duct geometry on bluff-body flame stabilization
GB1055234A (en) Ultra-high temperature combustion chambers
US3032990A (en) Fuel nozzle for gas turbine engine
CA2258246A1 (en) Fuel-air mixture apparatus
GB1380308A (en) Combustion head of a burner
JPH03101859A (en) Vortex chamber atomizer
US5454139A (en) Vacuum cleaner for vehicles

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)