WO2014104547A1 - Hotte de décharge de type vortex - Google Patents

Hotte de décharge de type vortex Download PDF

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Publication number
WO2014104547A1
WO2014104547A1 PCT/KR2013/008920 KR2013008920W WO2014104547A1 WO 2014104547 A1 WO2014104547 A1 WO 2014104547A1 KR 2013008920 W KR2013008920 W KR 2013008920W WO 2014104547 A1 WO2014104547 A1 WO 2014104547A1
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WO
WIPO (PCT)
Prior art keywords
case
air
vortex
unit
hood
Prior art date
Application number
PCT/KR2013/008920
Other languages
English (en)
Korean (ko)
Inventor
윤승원
Original Assignee
한국생산기술연구원
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 claimed from KR1020120156047A external-priority patent/KR101395187B1/ko
Priority claimed from KR1020130112636A external-priority patent/KR101550193B1/ko
Application filed by 한국생산기술연구원 filed Critical 한국생산기술연구원
Priority to JP2014554677A priority Critical patent/JP5753955B2/ja
Priority to CN201380001514.2A priority patent/CN104039468B/zh
Publication of WO2014104547A1 publication Critical patent/WO2014104547A1/fr

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/46—Air flow forming a vortex

Definitions

  • the present invention relates to a vortex type discharge hood that sucks air containing contaminants such as dust or fumes generated in a large industrial site and discharges it to the outside of the workplace. More specifically, there is no mechanical operating part. Vortex caused by the injected air is generated inside the hood, so that contaminated air in and around the hood can be sucked out with a strong suction force, and the hood is manufactured by unitizing a structure for injecting air into the hood. And a vortex discharge hood which is easy to operate.
  • the hood is installed in the area where the pollutant is generated to force the polluted air to be sucked out.
  • the contaminated air sucked into the hood is sent to the dust collector installed outside the workplace through the exhaust duct, and the dust collector filters the contaminants in the contaminated air and then discharges the filtered air to the atmosphere.
  • the conventional hood has a circular or rectangular cross-sectional shape of the air intake port, and has a shape in which the area is narrowed upward.
  • one end of the discharge duct for discharging air is connected to the upper end of the hood, and an air discharge device such as a blower is installed at the other end of the discharge duct.
  • the conventional hood is a method of inhaling and discharging contaminated air into the hood by using the suction force generated by the operation of the air discharge device, and the streamline distribution of the air flow flowing into the hood is limited to the inside and the lower space of the hood. Due to the distribution, only the air in the local area space is discharged, and the polluted air in the space around the outside of the hood is not discharged, there is a problem of low polluted air discharge efficiency.
  • Japanese Laid-Open Patent Publication No. 1989-38540 proposes to discharge air flows from four struts to generate spiral rising vortices and to generate intake in a direction orthogonal to the rising vortices at the center of the space.
  • the technique disclosed in the above patent document is a structure in which air is discharged in a tangential direction with respect to the center of the exhaust port of the exhaust hood having a circular cross-sectional shape of the inlet port continuous to the exhaust duct, and the air is ejected in the air outlet port and the bottom bottom direction. It is an invention that needs to install a plurality of blades for the air outlet or air inlet to the complicated structure, it is required to supply the power to drive the operating parts, there is a disadvantage that the noise generated by the operation of the drive power.
  • US Patent No. 6,851,421 B2 and US Patent Publication No. US 2007/0015449 A1 show that the fumes generated in the range are sucked into the hood without leaving the range due to the vortices generated by the air jet that is ejected at a low speed vertically upward from the bottom of the range.
  • Disclosed is a structure that is discharged, but there is a disadvantage that the exhaust air is limited to the space under the hood.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 1989-38540 (1989.02.08)
  • Patent Document 2 US Patent No. 6,851,421 B2 (2005.02.08)
  • Patent Document 3 US published patent US 2007/0015449 A1 (2007.01.18)
  • the present invention has been made in consideration of the above problems, and an object of the present invention is to use a vortex generated inside the hood, and a vortex discharge which can effectively inhale and discharge the contaminated air in the lower part of the hood and the space around the hood In providing a hood.
  • Another object of the present invention is to provide a vortex inside the hood by injecting air into the hood without installing a mechanical device such as a fan directly in the hood.
  • the present invention provides a vortex discharge hood that requires no maintenance work on the operation site.
  • Another object of the present invention by allowing the air injection unit unitized by the air injection unit for injecting air into the hood to be detachable to the hood case, the vortex that improves the convenience for replacement or maintenance of the air injection unit To provide a drainage hood.
  • the front / rear / left / right side and the upper surface is closed, the lower surface is made of an open structure, the upper surface of the arcuate A case formed of a structure;
  • a discharge duct installed on each of the left and right sides of the case to form a flow path through which air introduced into the case is discharged;
  • a plurality of air injection units installed at each of the rear and the upper surface of the case and injecting air in a tangential direction to the inner surface of the case to generate a vortex that rotates about a horizontal pivot axis inside the case. It provides a vortex discharge hood.
  • the air injection unit may be assembled to an installation hole formed in the case, and may be configured as an air injection unit connected to an external air supply source and injecting air supplied from the air supply source in a tangential direction to the inner surface of the case.
  • the air injection unit has a flange assembled to the case by a bolt while being in close contact with the periphery of the installation hole, and is connected to an air source to form a chamber into which the air supplied from the air source is introduced, the inside of the case
  • the dispersion plate may include a flange portion fixed to the case by bolts for assembling the flange of the unit case to the case, and an air dispersion portion extending from the flange portion into the unit case to disperse air.
  • the nozzle plate has a flange portion fixed to the case by bolts for assembling the flanges of the unit case to the upper and lower ends, respectively, and between the two flange portions, air that guides the air passing through the air dispersion unit into the nozzle structure.
  • the guide portion is formed.
  • the air dispersion portion is formed to be inclined away from the nozzle plate, the air induction portion is formed in a cross-sectional structure convexly curved in a direction away from the dispersion plate.
  • a spacer for separating the two flange portion is configured to space the flange portion of the nozzle plate from the inner surface of the case.
  • the spacer is preferably formed so as to integrally form the spacer on the nozzle plate by protruding the peripheral portion of the hole formed in the flange portion so as to penetrate in the direction of the dispersion plate.
  • the air dispersing unit has a structure extending in the longitudinal direction of the unit case facing the air flowing into the unit case, the bottom is installed spaced apart from the inner bottom surface of the unit case, the bottom is formed in the unit case The portion closest to the air inlet is closest to the inner bottom surface of the case, and is inclined away from the inner bottom surface of the unit case as it moves away from the air inlet.
  • the discharge duct the left discharge duct provided on the left side of the case; And a right discharge duct installed on the right side of the case so as to have a symmetrical structure with the left discharge duct, wherein the left discharge duct and the right discharge duct are connected to each other at the outside of the case to form one discharge duct.
  • the length of the rear of the case is formed longer than the length of the front, it is preferable that the front and rear of the case is formed in an asymmetric structure.
  • the air injected in the direction tangential to the inner surface of the case from the air injection unit flows in such a way that the air flows from the rear of the case to the upper surface and from the upper surface to the front direction from the rear surface of the vortex generated inside the case It is configured to turn in the direction leading to the front via.
  • the air injection unit installed on the rear and upper surface of the case is generated by the effect of the vortex generated by the air injected in the tangential direction to the inner surface of the case, and the air injected By the suction force by the Coanda effect, there is an effect of inhaling and discharging the contaminated air around the hood and the vertical lower portion of the hood.
  • FIG. 1 is a perspective view showing the structure of a vortex discharge hood according to a first embodiment of the present invention
  • Figure 2 is a perspective view cut perpendicularly to the longitudinal direction at any position in the longitudinal direction of the vortex discharge hood according to the first embodiment of the present invention
  • FIG. 3 is a perspective view showing a detailed structure of an air injection unit according to a first embodiment of the present invention
  • FIG. 4 is a perspective view of a vortex discharge hood according to a second embodiment of the present invention.
  • FIG. 5 is a side view of a vortex discharge hood according to a second embodiment of the present invention.
  • FIG. 6 is an exploded perspective view of a vortex discharge hood according to a second embodiment of the present invention.
  • FIG. 7 is a perspective view showing the structure of an air injection unit according to the present invention.
  • FIG. 8 is an exploded perspective view showing a structure of an air injection unit according to the present invention.
  • FIG. 9 is a side view showing the structure of an air injection unit according to the present invention.
  • FIG. 10 is a side view showing a state in which the air injection unit according to the present invention is installed in the case
  • FIG. 11 is a cross-sectional view showing a structure in which a spacer is integrally formed on a nozzle plate according to the present invention
  • FIG. 12 is an exemplary view showing the air flow during operation of the vortex discharge hood according to the second embodiment of the present invention.
  • left discharge duct 220 right discharge duct
  • unit case 311 flange
  • nozzle plate 331 flange portion
  • flange portion 333 air induction portion
  • FIG. 1 is a perspective view showing the structure of the vortex discharge hood according to the first embodiment of the present invention
  • Figure 2 is perpendicular to the longitudinal direction at any position in the longitudinal direction of the vortex discharge hood according to the first embodiment of the present invention
  • 3 is a perspective view illustrating the detailed structure of the air injection part according to the first embodiment of the present invention.
  • the vortex discharge hood according to the present invention has a Coanda effect generated by the influence of the vortex generated by the air injected in the tangential direction to the inner surface of the case and the air injected from the air injection unit installed on the rear and top of the case (Coanda It is characterized in that the suction and discharge the contaminated air in the lower part and the surroundings of the hood by the suction force by the effect, the case 100, the discharge duct 200, and the air injection unit (300 '). It consists of
  • the case 100 is a front / back / left / right side surfaces 101, 102, 103, 104 and the upper surface 105 is closed, the lower surface is an open structure, the upper surface 105 is formed in an arcuate structure.
  • the upper surface 105 of the case 100 is formed in an arcuate structure to interconnect the upper ends of the front surface 101 and the rear surface 102.
  • the upper surface 105 of the case 100 has a convexly curved structure in the upward direction, and the air injected into the case 100 may flow on the inner surface of the case 100 to generate vortices. If it is a structure, it may be formed in a variety of structures, such as round, oval or curved near.
  • the length L1 of the rear surface 102 of the case 100 is formed longer than the length L2 of the front surface 101 so as to improve the generation effect of the vortex, so that the case 100 is the front surface 101 )
  • the back surface 102 are formed in an asymmetrical structure
  • the left surface 103 and the right surface 104 is formed in a symmetrical structure.
  • discharge holes 103a and 104a through which the discharge duct 200 is connected to discharge the contaminated air are formed on the left side 103 and the right side 104 of the case 100, respectively.
  • the centers of the two outlets 103a and 104a respectively formed on the left side 103 and the right side 104 of the case 100 are formed to coincide with the pivot axis s of the vortex generated inside the case 100.
  • the centers of the two outlets 103a and 104a coincide with the swirl axis s of the vortex
  • the centers of the left discharge duct and the right discharge duct which will be described later, coincide with the swirl axis s of the vortex, It is possible to induce the emission of air more smoothly.
  • front surface 101 and the rear surface 102 of the case 100 may be formed in a structure extending in the vertical downward direction from the upper surface 105, the upper surface while maintaining a predetermined slope relative to the vertical position It may be formed in a structure extending downward from the 105.
  • the discharge duct 200 is installed to extend from the case 100 to form a flow path through which contaminated air is discharged, and includes a left discharge duct 210 and a right discharge duct 220.
  • the left discharge duct 210 is installed to be connected to an outlet 103a formed on the left side 103 of the case 100, and the right discharge duct 220 is formed on the right side 104 of the case 100.
  • the left discharge duct 210 and the right discharge duct 220 installed on the left side 103 and the right side 104 of the case 100, respectively, are installed to be connected to the 104 a. It is installed to have a mutually symmetrical structure.
  • a known air discharge device such as a blower is installed at the discharge side ends of the left discharge duct 210 and the right discharge duct 220 to induce smooth discharge of contaminated air through the discharge duct.
  • the air injection unit 300 ′ injects air in a tangential direction to the inner surface of the case 100, and has a horizontal pivot axis s inside the case by air injected from the air injection unit 300 ′.
  • the vortices are rotated about and the suction force is generated by the Coanda effect generated by the effect of the injected air.
  • One or more air spraying units 300 ⁇ are formed on the rear surface 102 and the upper surface 105, respectively, and the air injected from the air spraying unit 300 ⁇ is disposed on the rear surface 102 of the case 100 ⁇ the upper surface ( 105) to form a flow leading to the front surface 101.
  • the air spraying unit 300 ′ formed on the rear surface 102 injects air so that air flows from the rear surface 102 toward the upper surface 105, and the air spraying unit 300 ′ formed on the upper surface 105. ) Injects air so that air flows from the upper surface 105 toward the front surface 101.
  • FIG. 2 illustrates a structure in which one air injection unit 300 ′ is formed on the rear surface 102 and two air injection units 300 ′ are formed on the top surface 105.
  • each of the air injection unit 300 ⁇ is formed in a structure extending in a straight line toward the right side 104 from the left side 103 of the case 100 to inject air uniformly throughout the inner surface of the case 100 Is configured to.
  • each air injection unit 300 ⁇ is configured to form a structure of a known shrinkage diffusion nozzle.
  • each air injection unit 300 ′ has a nozzle inlet 111 formed in the case 100 and the nozzle to guide the air introduced through the nozzle inlet 111 into the case 100. It is installed to extend from the inlet 111 into the case 100, the nozzle contraction portion 1121 to induce a pressure increase of the air flowing through the nozzle inlet 111, and the end of the nozzle contraction portion 1121 It is composed of a guide member 112 to form a nozzle diffusion portion 1122 to gradually increase the cross-sectional area of the flow path from the air pressure to lower the pressure.
  • the air injection unit 300 ⁇ composed of the nozzle inlet 111 and the guide member 112 is connected to a separate air supply device, not shown, and the air introduced through the nozzle inlet 111 from the air supply device is The pressure is increased in the process of passing through the nozzle contraction portion 1121, and when passing through the nozzle diffuser 1122 through the nozzle neck 1123, which is a boundary between the nozzle contraction portion 1121 and the nozzle diffuser 1122, air is released. As the pressure is lowered, the air velocity discharged from the air injection unit 300 ⁇ is increased. Since the principle of the shrinkage diffusion nozzle is a widely known principle, more detailed description will be omitted.
  • FIG. 4 is a perspective view of a vortex discharge hood according to a second embodiment of the present invention
  • FIG. 5 is a side view of a vortex discharge hood according to a second embodiment of the present invention
  • FIG. 6 is a second embodiment of the present invention. The exploded perspective view of the vortex discharge hood according to the present invention is shown.
  • the vortex discharge hood according to the second embodiment of the present invention also has air injected in a tangential direction to the inner surface of the case from an air injection unit installed at the rear and top of the case. It is characterized in that the suction and discharge the contaminated air into the hood by using the suction force caused by the vortex generated by the air, and the Coanda effect (Coanda effect) generated by the effect of the injected air, the case 100 and , The exhaust duct 200, and the air injection unit 300 ′.
  • the case 100 has the same structure as that of the case 100 of the first embodiment, and thus the detailed description of the case 100 is omitted, and the same reference numerals are used.
  • the discharge duct 200 is discharged to the left side, which is installed to be connected to the discharge ports 103a and 104a respectively formed on the left side 103 and the right side 104 of the case 100, similarly to the discharge duct 200 of the first embodiment.
  • a duct 210 and a right discharge duct 220 Comprising a duct 210 and a right discharge duct 220, the basic structure of the left discharge duct 210 and the right discharge duct 220 and the left discharge duct 210 and the right discharge duct 220 of the first embodiment and Since it is the same, a description of the basic structure is omitted, and the same reference numerals are used.
  • the left discharge duct 210 and the right discharge duct 220 according to the second embodiment is connected to each other on the outside of the case 100 and extends to the outside while forming one discharge duct, such discharge duct 200
  • An air discharge device is installed to guide the polluted air to be smoothly discharged through the discharge duct 200.
  • the air discharge device may be composed of a known blower, and this air discharge device is already widely used, so that the illustration and detailed description of the air discharge device will be omitted.
  • the centers of the outlets 103a and 104a respectively formed on the left side 103 and the right side 104 of the case 100 to connect the left discharge duct 210 and the right discharge duct 220 are the case 100. It is formed to coincide with the pivot axis (s) of the vortex generated inside the.
  • At least one air spraying unit 300 ′ is installed at each of the rear surface 102 and the upper surface 105 of the case 100 to inject air in a tangential direction to the inner surface of the case. Master 300 'and the function is the same.
  • the air spray unit 300 ′ according to the second embodiment of the present invention is configured to assemble and mount the separately manufactured air spray unit 300 to the case 100.
  • FIG. 7 is a perspective view showing the structure of the air injection unit according to the invention
  • Figure 8 is an exploded perspective view showing the structure of the air injection unit according to the invention
  • Figure 9 is a side view showing the structure of the air injection unit according to the present invention 10 is a side view showing a state in which an air spray unit according to the present invention is installed in a case
  • FIG. 11 is a sectional view showing a structure in which a spacer is integrally formed on a nozzle plate according to the present invention.
  • the air injection unit 300 is composed of a unit case 310, a dispersion plate 320, and a nozzle plate 330.
  • the unit case 310 is assembled to the case 100 and is connected to an external air supply source to receive air provided from the air supply source and to spray the inside of the case 100.
  • the external air source may be composed of a known blower or a compressor.
  • the unit case 310 is formed of a polygonal or cylindrical enclosure that is entirely closed to form a chamber to disperse the air supplied from the air source while temporarily staying therein, the inner direction of the case 100
  • the one side 310a positioned at is formed in an open structure, and the open one side 310a is closed by the nozzle plate 330 to be described later.
  • flanges 311 and 312 for assembling with the case 100 are formed at both sides of the open side surface 310a, and the flanges 311 and 312 are held in close contact with the inner surface of the case 100 by bolts. 100).
  • the unit case 310 having such a structure is inserted into the installation holes 102a and 105a (shown in FIG. 6) formed in the rear surface 102 or the upper surface 105 of the case 100 in the inward direction of the case 100.
  • the flanges 311 and 312 are in close contact with the inner surface of the case 100 in this process, the flanges 311 and 312 of the unit case 310 are fastened to the case 100 by bolts to be assembled with the case 100. do.
  • the unit case 310 has an air inlet 313 connected to an air supply source and a hose or pipe at a predetermined position.
  • the dispersion plate 320 disperses air introduced into the unit case 310 through the air inlet 313 in the unit case 310, and the flange portion 321 and the air dispersion portion 322. It consists of.
  • the flange part 321 is a part fixed to the unit case 310, and the case 100 together with the unit case 310 by bolts for assembling the flange 311 of the unit case 310 to the case 100. Is fixed to.
  • the air dispersing portion 322 is formed to extend into the unit case 310 from the flange portion 321, and is formed to face the air flowing into the unit case 310 through the air inlet 313. .
  • the air dispersion unit 322 is formed in a structure extending in the longitudinal direction of the unit case 310 and has a function of dispersing air introduced from the air inlet 313 in the longitudinal direction of the unit case 310.
  • the bottom end 323 of the air dispersion unit 322 as described above is spaced apart from the inner bottom surface 310b of the unit case 310 and the air dispersed by the air dispersion unit 322 and the unit case 310 It is configured to form a space flowing to the nozzle structure (N) side formed between the nozzle plate 330, wherein the bottom 323 of the air dispersing portion 322 is an air inlet 313 formed in the case 100
  • the portion 323a closest to the closest to the inner bottom surface 310b of the unit case 310 is inclined away from the inner bottom surface 310b of the case 100 as it moves away from the air inlet 313. Is formed.
  • the distance between the bottom 323 of the air dispersing unit 322 and the inner bottom surface 310b of the unit case 310 is increased in proportion to the distance between the air inlet 313 and the bottom 323.
  • the flow resistance of the air decreases, so that the amount of air flowing toward the nozzle structure N through the lower portion of the air dispersing unit 322 can be maintained to be uniform throughout.
  • the nozzle plate 330 is installed to close the open side 310a of the unit case 310, and a part of the case is spaced apart from the unit case 310 to receive air introduced into the unit case 310 into the case 100. It is to form a nozzle structure (N) for spraying in the tangential direction to the inner surface of the).
  • the nozzle plate 330 is composed of a flange portion (331,332) and the air induction portion 333.
  • the flanges 331 and 332 are formed at the upper and lower ends of the nozzle plate 330, respectively, and are fixed to the case 100 by bolts for assembling the flanges 331 and 332 of the unit case 310 to the case 100.
  • the two flanges 331, 332 of the flange portion 331 located on the upper end of the nozzle plate 330 is installed to be spaced apart from the unit case 310, the air flowing into the unit case 310 is the case 100 ) Forms a nozzle structure (N) which is sprayed in a direction tangential to the inner surface.
  • a spacer is installed between the flange portion 321 and the unit case 310 so that the flange portion 331 is spaced apart from the unit case 310, and more specifically, the nozzle plate 330 and the dispersion plate ( Spacers are installed between the flange portions 321 of the 320.
  • the spacer is a fastening method so that a bolt for fastening the air injection unit 300 to the case 100 in a state in which a spacer separately prepared in a ring shape is disposed between two flange portions 331 and 321 through the spacer.
  • the spacer 334 may be integrally formed with the nozzle plate 330 by molding the peripheral portion of the hole 331a through which the bolt penetrates to protrude in the direction of the dispersion plate 320.
  • the air induction part 333 connects two flange parts 331 and 332 formed at the upper end and the lower end of the nozzle plate 330 to induce air to the nozzle structure (N) side.
  • the case 100 through the nozzle structure (N) formed by the nozzle plate 330 In order to increase the flow rate of the air injected into the inside of the air induction unit 333 and the air dispersion unit 322 is formed so that the area of the space in which air flows gradually decreases.
  • the air induction part 333 is connected to the flange portion 331 of the upper end and the flange portion 332 of the lower end, but is formed in a cross-sectional structure bent convex in the direction away from the dispersion plate 320,
  • the air dispersion unit 322 is formed to be inclined in a direction away from the nozzle plate 330.
  • the air flowing into the space between the air induction part 333 and the air dispersing part 322 is gradually narrowed by the nozzle structure (N)
  • the pressure is increased in the process flowing into the side to increase the speed of the air discharged to the nozzle structure (N).
  • Vortex type exhaust hood according to the present invention is installed in a place where the discharge of contaminated air, like a known hood, is discharged at the end of the discharge duct 200, such as a blower for inducing a smooth discharge of the contaminated air
  • the apparatus is installed, and the air injection unit 300 is connected to an air source such as a blower or a compressor provided at the site.
  • Figure 12 shows an exemplary view showing the air flow during the operation of the vortex discharge hood according to the second embodiment of the present invention.
  • the vortex type discharge hood of the present invention is formed by the negative pressure formed in the hood due to the operation of the air discharge device, the vortex generated by the air injected in the tangential direction of the inner surface of the hood from the air injector 300 ', and the jet air.
  • a strong suction force is generated around the inlet side of the hood, that is, the front space and the bottom surface of the case 100 and around the entire circumference of the case outer end.
  • this suction force not only the contaminated air in the lower part of the hood, but also the contaminated air around the hood can be smoothly sucked out and discharged.
  • the air injected from the plurality of air injection units 300 ′ formed in the case 100 is sprayed in a tangential direction to the inner surface of the case 100, and also from the rear surface 102 to the upper surface 105. Sprayed to form a flow leading to the front surface 101.
  • the vortices that rotate in the direction from the rear surface 102 to the front surface 101 through the upper surface 105 are generated inside the case 100 by the flow of air injected from the air injection unit 300 ′.
  • the air and the air inside the hood are caused by the effects of the suction force generated by the swirling, the negative pressure generated by the operation of the air discharge device, and the Coanda effect generated by the air injected from the air injection unit 300 ⁇ .
  • the air in the space outside the hood is sucked together and discharged.
  • the amount and the injection speed of the air injected through each air injection unit 300 ⁇ may vary depending on the position or number of the air injection unit 300 ⁇ installed in the case 100 so that the vortex generation is efficiently induced have.
  • the vortex discharge hood may be further installed in the lower end of the case 100, foreign matter inflow prevention grid to prevent the foreign matter larger than a limited size flow into the hood.
  • the air injection unit 300 can be easily configured by additionally installing the air injection unit 300 in the case 100, and can easily replace only the air injection unit 300. There is this.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Nozzles (AREA)

Abstract

La présente invention concerne une hotte de décharge de type vortex apte à aspirer et décharger efficacement de l'air pollué dans la partie inférieure de la hotte et dans l'espace à proximité de la hotte à l'aide d'un vortex généré dans la hotte. Selon l'invention, la hotte de décharge de type vortex comprend : un boîtier présentant des surfaces frontale, arrière, de gauche et de droite fermées, une surface supérieure fermée et une surface inférieure présentant une structure ouverte, la surface supérieure étant formée de manière à présenter une structure en forme d'arc ; des conduits de décharge disposés respectivement sur les surfaces latérales gauche et droite du boîtier de manière à former des voies d'écoulement dans lesquelles l'air aspiré dans le boîtier est déchargé ; et des unités multiples d'injection d'air présentant au moins une unité disposée sur chacune parmi la surface arrière et la surface supérieure du boîtier et injectant l'air dans une direction tangentielle par rapport à la surface interne du boîtier de manière à générer un vortex tournant autour d'un axe de révolution qui est parallèle à la partie interne du boîtier.
PCT/KR2013/008920 2012-12-28 2013-10-07 Hotte de décharge de type vortex WO2014104547A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014554677A JP5753955B2 (ja) 2012-12-28 2013-10-07 渦流式排出フード
CN201380001514.2A CN104039468B (zh) 2012-12-28 2013-10-07 涡流式排出罩

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020120156047A KR101395187B1 (ko) 2012-12-28 2012-12-28 와류식 배출 후드
KR10-2012-0156047 2012-12-28
KR1020130112636A KR101550193B1 (ko) 2013-09-23 2013-09-23 와류식 배출 후드
KR10-2013-0112636 2013-09-23

Publications (1)

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WO2014104547A1 true WO2014104547A1 (fr) 2014-07-03

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KR102469350B1 (ko) * 2020-12-21 2022-11-23 주식회사 포스코 집진장치 및 집진방법

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