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WO2008002190A1 - Procédé de pulvérisation d'un liquide à sélection et recirculation et dispositif correspondant - Google Patents

Procédé de pulvérisation d'un liquide à sélection et recirculation et dispositif correspondant Download PDF

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Publication number
WO2008002190A1
WO2008002190A1 PCT/RU2007/000307 RU2007000307W WO2008002190A1 WO 2008002190 A1 WO2008002190 A1 WO 2008002190A1 RU 2007000307 W RU2007000307 W RU 2007000307W WO 2008002190 A1 WO2008002190 A1 WO 2008002190A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
spraying
pulsed
spray
particles
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.)
Ceased
Application number
PCT/RU2007/000307
Other languages
English (en)
Russian (ru)
Inventor
Sergei Viktorovich Nadmitov
Oleg Viktorovich Nadmitov
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2008002190A1 publication Critical patent/WO2008002190A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B05B12/06—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for effecting pulsating flow
    • 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

Definitions

  • the invention relates to methods and devices for spraying liquids in technological processes that require a spray jet of uniform atomic liquid velocity and particle size, in particular in combustion devices, in internal combustion engines, in spraying devices for applying various kinds of coatings, in the food industry, in the chemical industry.
  • the closest in technical essence to the method is the method of hydraulic spraying (prototype), described in the book Pazhi D.G., Galustov V.S. Fundamentals of spraying liquids. - M .: Chemistry, 1984, on page 10.
  • the method consists in the fact that the spraying is carried out by supplying a liquid under discharge pressure through a spray device.
  • the main energy factor leading to the decay of the liquid into droplets is the discharge pressure.
  • the liquid flow Passing through the spray device, the liquid flow, firstly, acquires a fairly high speed, and, secondly, is converted into a form that facilitates rapid and effective decay (stream, film, large particles, depending on the sprayer belonging to one class or another) )
  • the disadvantage of this method is the heterogeneity of the spray torch in size and velocity of the particles of the atomized liquid. This heterogeneity of the spray pattern is due to various reasons, one of which consists in the fact that under the action of aerodynamic drag forces, small particles of the atomized liquid are slowed down more strongly than larger particles.
  • the closest in technical essence to the device is a device for spraying liquid (prototype), described in the book by Nikolaenko A.V. Theory, design and calculation of automotive engines 2nd ed., Revised. and add. - M .: Kolos, 1992, p. 309, fig. 72.
  • the device comprises a container with a sprayed liquid, communicating through a device for pulsed fluid supply under discharge pressure with a spray nozzle.
  • the disadvantage of this device is the heterogeneity of the spray jet in terms of speed and particle size of the atomized liquid. This heterogeneity of the spray pattern is caused by various reasons, one of which is that, under the action of aerodynamic drag forces, small particles of the sprayed liquid are slowed down more strongly than larger particles.
  • the present invention solves the problem of reducing the inhomogeneity of the spray jet in speed and particle size.
  • sprayed liquid by pulsed spraying supplemented by selection (selection) from the plume of particles of sprayed liquid forming an accumulated liquid, which is sent for re-spraying (recirculation).
  • selection selection
  • recirculation recirculation
  • the technical result for the method is achieved in that the spraying is carried out by supplying liquid under the injection pressure through the spraying device, the spraying process is carried out by pulses and complemented by a pulsed process of selecting fragments from the spraying torch from which particles of the sprayed liquid are collected, which form a liquid in the accumulated form, which is sent for re-spraying, and the pulsed spraying process is synchronized with the pulsed process of selection from the torch p spyleniya fragments.
  • spraying is carried out by supplying liquid under a discharge pressure through a spray device.
  • the spraying process is carried out by pulses; • complement the process of pulse selection from the spray torch of its fragments, from which particles of the atomized liquid are captured, forming the accumulated liquid, which is sent for re-spraying; • the pulsed spraying process is synchronized with the pulsed process of selection from the spray torch of its fragments.
  • the technical result for the device is achieved due to the fact that in the device containing the container with the sprayed liquid, communicating through the device for the pulsed fluid supply under the injection pressure with the spray nozzle, a synchronizer is installed for the operation of the device pulsed fluid supply under the injection pressure with the work of the flow distributor located and made with the possibility of pulsed switching of the spray torch in the receiver for collecting particles, and the receiver for collecting particles together tsya with the container with the fluid being dispensed.
  • FIG. 1 shows a General view of a device for pulsed selective-recirculation spray of liquid.
  • FIG. Figure 2 illustrates the difference in the speed of movement of large and small particles of atomized liquid.
  • the method is as follows. From the tank with the sprayed liquid, the pump is supplied with pulses of liquid under the injection pressure through the spray nozzle.
  • the fluid flow passes through the spray nozzle, acquiring a high speed and in the form of a jet, flows out of the nozzle.
  • a stream of liquid flowing out of the nozzle breaks up into particles of different sizes, forming a spray torch.
  • a pulsed fluid supply under a discharge pressure leads to a pulsed spraying process in which a spraying torch appears, exists for some time, and disappears.
  • the device consists of a container with a sprayed liquid 1, communicating by means of a pipe 2 through a pulsed fluid supply device with a discharge pressure 3 and a spray nozzle 4.
  • a flow distributor 5 is installed and configured to pulse switch the spray torch to a receiver for collecting particles 6.
  • a receiver for collecting particles 6 communicates using a pipe 7 with a container with a sprayed liquid 1.
  • a synchronizer 8 is installed, coordinating the operation of the device for pulsed fluid supply under discharge pressure 3 with the operation of the flow distributor 5.
  • the device operates as follows.
  • the liquid from the tank 1 enters through the pipe 2 to the device for pulsed liquid supply under the discharge pressure 3, then the liquid impulses enters the spray nozzle 4.
  • the liquid flows from the nozzle 4 in the form of a jet that breaks up into particles of different sizes, forming a spray torch.
  • a pulsed fluid supply under a discharge pressure leads to a pulsed spraying process in which a spraying torch appears, exists for some time, and disappears.
  • small particles of the atomized liquid are slowed down more strongly than larger particles, which leads to an uneven distribution of particles sprayed liquid in a flare, as illustrated in FIG. 2.
  • the leading front is characterized by larger fast particles, and small slow particles by the trailing edge of the torch.
  • the flow distributor 5 pulsedly switches the spray torch to a particle collection receiver 6, which leads to the removal of fragments from the spray torch (leading edge or trailing edge of the generated flame pulse).
  • the remaining spray pattern is characterized by greater uniformity in speed and particle size of the sprayed liquid.
  • Particles of sprayed liquid collected from 6 fragments of the spray torch directed to the receiver for collecting particles form a liquid in accumulated form, which flows by gravity through pipe 7 into a container with sprayed liquid 1.
  • Synchronizer 8 of the device for pulsed liquid supply under discharge pressure 3 with the operation of the distributor stream 5 provides the conditions for the removal of the specified fragments from the spray torch.
  • the device pulsed fluid supply under a discharge pressure 3 made in the form of a plunger pump.
  • a discharge pressure 3 made in the form of a plunger pump.
  • a flow distributor 5 located and configured to pulse switch the spray torch to a particle collection receiver 6 is made in the form of a cutter blade fixed to shaft. During rotation, the cutter blade impulse closes the spray jet, directing the spray jet to the receiver to collect particles 6.
  • the location of the flow distributor 5 is determined by the geometric dimensions of the spray jet.
  • the receiver for collecting particles 6 is made in the form of a casing in the form of side surfaces of two identical truncated cones connected by large bases.
  • the synchronizer 8, coordinating the operation of the pulsed fluid supply device under discharge pressure 3 with the operation of the flow distributor 5 is made in the form of a gear transmission connecting the rotation shaft of the flow distributor 5 with a crank mechanism connected to the plunger of the plunger pump.
  • Other versions of the synchronizer 8 are possible, it is necessary and sufficient to realize the function of synchronizing the operation of the pulsed fluid supply device under discharge pressure 3 with the operation of the flow distributor 5 to create conditions for the selection of specified fragments of the spray torch.

Landscapes

  • Nozzles (AREA)

Abstract

L'invention concerne la pulvérisation de liquides dans des processus technologiques nécessitant la présence d'une torche de diffusion de particules d'un liquide diffusé (la vitesse et la taille des particules étant homogènes) et peut s'utiliser dans des brûleurs, des moteurs à combustion interne et dans les industries chimique et alimentaire. L'invention permet de fabriquer une torche de diffusion de liquide assurant une meilleure homogénéité de la vitesse et de la taille des particules de liquide diffusées grâce à la suppression dans la torche de diffusion des grandes particules se déplaçant rapidement et des petites particules se déplaçantlentement. Le processus de diffusion s'effectue en mode pulsé et est complété par un processus pulsé de capture dans la torche de fragments de diffusion, dans lesquels on capte des particules de liquide diffusé qui constituent sous forme accumulée un liquide renvoyé pour une deuxième pulvérisation. Le processus pulsé de diffusion est synchronisé avec le processus pulsé de sélection dans la torche de pulvérisation de ses fragments. Le dispositif comprend un mécanisme de synchronisation du fonctionnement du dispositif d'alimentation pulsée de liquide sous une pression d'injection et du fonctionnement du distributeur de flux, qui est disposé etréalisé de manière à permettre la commutation pulsée de la torche de pulvérisation dans le réceptacle de collecte de particules. Le réceptacle de collecte de particules communique avec un récipient contenant le liquide à pulvériser.
PCT/RU2007/000307 2006-06-19 2007-06-07 Procédé de pulvérisation d'un liquide à sélection et recirculation et dispositif correspondant Ceased WO2008002190A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2006121776 2006-06-19
RU2006121776/12A RU2317151C1 (ru) 2006-06-19 2006-06-19 Способ импульсного селективно-рециркуляционного распыления жидкости и устройство для его осуществления

Publications (1)

Publication Number Publication Date
WO2008002190A1 true WO2008002190A1 (fr) 2008-01-03

Family

ID=38845850

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2007/000307 Ceased WO2008002190A1 (fr) 2006-06-19 2007-06-07 Procédé de pulvérisation d'un liquide à sélection et recirculation et dispositif correspondant

Country Status (2)

Country Link
RU (1) RU2317151C1 (fr)
WO (1) WO2008002190A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892363A (en) * 1974-08-05 1975-07-01 Ass Mills Inc Attachment for hydrotherapy bath
SU1480882A1 (ru) * 1988-01-07 1989-05-23 Н.Ф.Корнийчук Устройство дл импульсного распылени жидкости
WO1992008546A1 (fr) * 1990-11-20 1992-05-29 Alsons Corporation Pomme de douche a main a jet pulse ou constant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892363A (en) * 1974-08-05 1975-07-01 Ass Mills Inc Attachment for hydrotherapy bath
SU1480882A1 (ru) * 1988-01-07 1989-05-23 Н.Ф.Корнийчук Устройство дл импульсного распылени жидкости
WO1992008546A1 (fr) * 1990-11-20 1992-05-29 Alsons Corporation Pomme de douche a main a jet pulse ou constant

Also Published As

Publication number Publication date
RU2317151C1 (ru) 2008-02-20

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