Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
  • F24C15/00—Details
  • F24C15/20—Removing cooking fumes
  • F24C15/2028—Removing cooking fumes using an air curtain

Definitions

• the invention relates to a ventilation arrangement with a vapor extraction hood provided according to the preamble of claim 1.
• a ventilation arrangement with an extractor hood in which in the region of a separator filtered exhaust air is received via a distribution well so that an adjustable to the respective steam load ventilation system is effective.
• An additional supply line can be integrated into this hood construction in such a way that fresh air can be supplied to the extractor hood in the vicinity of the extractor hood.
• the vertical air flow upstream of the separator is intensified by detecting a partial air flow behind the separator and leading it downwards into the area of the cooking surface, so that an additional direct delivery jet is introduced into the suction air portion and adverse eddies occur.
• a generic type vapor extraction hood is known in which, starting from a distribution shaft containing a UVC system, a return connection which detects a partial volume of the filtered and disinfected exhaust air is integrated into the multi-layered wall of the hood construction (WO 2012/055504 A1 ), so that a compact structure with variable positioning possibilities is achieved.
• the partial volume of the UV light irradiated and filtered exhaust air in the area behind the separator optional
• the invention is concerned with the problem of providing a ventilation arrangement for a located on a central ventilation hood in which with little technical effort especially in large kitchens variably deployable assembly for exhaust air return to the low installation height having hood system is realized, while the in The kitchen fumes sucked in the extractor chamber can be influenced in an optimal flow orientation towards the separator and overall energy savings are achieved in comparison to known extractor hoods even with comparatively low supply of fresh air.
• the invention solves this problem with a ventilation arrangement with an extractor hood according to claim 1. Further advantageous embodiments emerge from the claims 2 to 21.
• the ventilation arrangement with connected to a central extraction hood is provided with a return connection, which according to the invention at least one extending outside of the particular limited by the ceiling part and the longitudinal and transverse side parts vapor receiving space extending branch channel as a functional additional part of the system.
• a return connection which according to the invention at least one extending outside of the particular limited by the ceiling part and the longitudinal and transverse side parts vapor receiving space extending branch channel as a functional additional part of the system.
• This branch duct enables optimum control and distribution of an exhaust air flow, in particular in the area of commercial kitchens on ships connected to a central exhaust system, so that control and return flow from the extractor hood can be achieved Control automatic significant energy savings can be achieved.
• the structurally variable executable concept of the branch channel provides that with this a the exhaust air "dividing" recirculation system is integrated into the hood.
• the branch channel is achieved by a partial return of filtered exhaust air also targeted influencing the sucked into the extractor chamber before the separator Wrasens.
• the partial volume of the exhaust air guided via the return connection of the branch channel a flow generated system with which an unwanted escape of moisture-containing haze can be avoided in the environment of the hood.
• the circulating air partial volume supplied via the branch duct and a transfer chamber into the extractor chamber can be controlled and directed in fluidic optimization such that this partial volume branched off from the "heated" exhaust air flows only in the area below the extractor hood near its ceiling part. In this case, it is avoided that exhaust air enters the surrounding space, and at the same time the ascending vapor can be deflected in its direction of movement towards the separator, such that a fluidically influenced air-vapor mixture is detected in the extractor chamber and discharged from it.
• This partial volume of the exhaust air is thereby discharged in particular from the located on one of the side parts transfer chamber by means of a fan, so that in the vicinity of the transfer chamber, a negative pressure in the vapor receiving chamber is effective and the rising from the surrounding space vapors a delivery impulse toward the transfer chamber opposite separator experiences.
• the hood system with the outer branch channel can be adapted to the installation conditions so that an overall flat construction is achieved and in particular the requirements for headroom in the area of kitchen equipment on ships are ensured.
• the flow direction of the emerging from the transfer chamber subvolume can be optimally adjusted in the fan, so that in the region of variable installation conditions, in particular concerning the inclination of the filter surface, adjustable separator a maximum demand of vaporous air mixture can be achieved.
• the manufacturing optimization of the ventilation arrangement provides that the branch duct advantageously extends above the hood receiving space substantially single-layer bounding and opposite both connected to the distribution well and with the transfer chamber ceiling part. It can be provided at variable positions of the branch channel of the respective sub-volume of the filtered exhaust air separating fan.
• the construction provides that several branch channels provided with a respective fan open in the area of the transfer chamber. The sucked by means of the fan sub-volume enters the front cover having a transfer chamber, in which case a steering is performed such that the sub-volume of the filtered exhaust air can flow with a substantially parallel to the ceiling portion of the hood extraction direction.
• the sub-volume in particular through nozzles
• the sub-volume can be guided to the opposite separator of the distribution shaft largely without changes in direction, for example by avoiding lying components as a deflection.
• several flow nozzles can be provided as a cover in the region of the transfer chamber.
• the fan or the associated flow nozzles can be closed by means of respective ventilation flaps against the conveying direction of the partial volume.
• an outlet opening into the branch duct is provided in an upper subregion of the distribution shaft which is bounded by the ceiling part and the outlet pipe cooperating with the central exhaust can be connected to the distribution duct at a distance from this outlet opening ,
• the branch channel is provided in the region of its outlet directly with the at least one fan.
• the subsequent branch channel is guided in the form of a multi-section pipe bend leading to the transfer chamber and opens in front of their provided with a cover outlet. In the area are Provided flow nozzles, with which the introduced partial volume of the exhaust air is passed into the vapor receiving space.
• the distribution shaft can be provided with a space extending behind the separator chamber hood approach.
• This hood attachment is placed directly on the outlet of the extractor hood and defines only one outlet of the distribution shaft. From this hood approach can then - be branched off to the transfer chamber - at largely variable position.
• the usable for the diversion of the partial volume of the exhaust fan is provided directly in the area connected to the hood approach to the branch channel discharge.
• the fan of this branch channel - in particular under the aspect of improved accessibility - be arranged at the outlet end of the branch channel in the region of the transfer chamber.
• control flap can be displaced by means of a drive member or by hand, so that a closed or opened position for the distribution shaft is provided according to the respective usage situation.
• control flap can also be infinitely adjusted according to the respective suction and thus the volume of air to be delivered is influenced.
• FIG 4 a plan view of the hood according to FIG 4 shows a partially sectioned front view of the extractor hood according to a line VV in FIG. 4, a partially sectioned side view similar to FIG. 3 with a second embodiment of the extractor hood,
• FIG. 7 is a sectional end view of the extractor according to a line VII-VII in Fig. 6, 8 is an enlarged detail view in the region of the hood approach with a control valve located in the closed position,
• FIG. 9 is a sectional view similar to FIG. 8 with an open position of the control flap
• FIG. 10 is a side view similar to FIG. 6 with additional items for
• a generally designated L ventilation arrangement (Fig. 2) is shown in an oblique view from below, to which assembly a designated overall by 1 extractor hood is connected.
• This extractor hood 1 is based on a construction according to WO 2012/055504 A1, wherein such hoods are provided in the form of a fume hood, in particular for the kitchen area of a ship's equipment.
• the extractor hood 1 in this case has a known housing-like construction and can be connected to a venting system 3 by means of an outlet connection 2 or the like.
• This extractor hood 1 is provided with an upper ceiling part 4 and in each case of this angled longitudinal and transverse side parts 5, 6 and 7, 8, so that in the installation position downwardly open vapor receiving chamber 9 is formed.
• Such extractor hoods 1 act in particular with an external suction drive (central ventilation 62, Fig. 10) together, by means of which an air flow S is generated so that from the extractor chamber 9 out water and / or greasy vapor via a separator 10 in a generally designated K channel in the form of a distribution shaft 1 is received and forwarded as largely cleaned exhaust air T (dashed line, Fig. 3) to the outlet port 2 out.
• the provided as a distribution well 11 channel K is provided with at least one a partial volume TV of the filtered exhaust air T detecting return connection TR.
• This return connection TR opens to the vapor receiving chamber 9 in the area of at least one transfer chamber 30. At the outlet of which a flow direction TR "of the recycled partial volume TV 'influencing cover 34 is provided.
• the system according to the invention of the extractor hood 1 provides (as shown in FIGS. 1 to 9) an optimized return connection TR, the latter being connected to a branch channel 50.1 (FIG. 2) or 50.2 (FIG. 2) which can be connected to the hood plates as an additional assembly 6).
• a variably configurable additional module is provided. This forms a substantially outside of - from the ceiling part 4 and the longitudinal and transverse side parts 5, 6, 7, 8 limited - Dunstworkraumes 9 extending while the region of the distribution shaft 11 with the transfer chamber 30 connecting return connection TR.
• branch channel 50.1 and 50.2 can advantageously be arranged such that it is essentially single-layered above the vapor receiving space 9 delimiting and opposite to both the distribution shaft 11 and the transfer chamber 30 connected to the ceiling part 4 extends. It is also conceivable that a branch channel is branched off from the region of the distribution shaft 11 in a manner not shown, that with a running adjacent to or below the hood 1 line arranged in the region of the longitudinal and transverse side parts 5, 6, 7, 8 return connection is shown (not shown) and thus the height H of the hood 1 is advantageously reduced. It is also conceivable that the system is also provided in the region of the transverse side parts 7, 8 with transfer chambers of the type described above.
• the embodiment of the extractor hood 1 according to FIG. 1 to FIG. 5 is characterized in that, in an upper partial area of the upper part bounded by the ceiling part 4, Partial shaft 11 (FIG. 3) is provided in the branch channel 50.1 opening outlet opening 54 and at a distance A to this outlet opening 54 of the known outlet 2 for the venting system 3 to the distribution shaft 11 is connected.
• the branch channel 50.1 is provided directly in the region of the outlet opening 54 with the at least one fan 51 so that from this the partial volume TV is pressed into the interior of the branch channel 50.1.
• the branch channel 50.1 is provided in the region of its outlet opening 55 (FIG. 3) toward the transfer chamber 30 with the at least one fan 51 (not shown).
• branch channel 50.1 in the form of a plurality of sections 56, 56 ', 56 "having pipe bend is guided to the transfer chamber 30 out.
• Fig. 5 shows the partially sectioned rear view (with open distribution shaft 11), the arrangement of the two fans 51 in the region of the branch channels 50.1 and 50.1 '.
• the per se known UV tube system 35 is visible, with which in the region of the distribution shaft 11 immediately behind the separator 10 ozone formation is effected, such that in addition to the antibacterial effect in the filtered exhaust air contained particles are crushed and the suction. 3 get to the vent.
• a second embodiment of the extractor hood 1 with the branch passage generally designated 50.2 becomes clear.
• the distribution shaft 11 is provided with a space located behind the separator 10 space K and connectable to the outlet 2 of the hood 1 hood extension 57.
• This hood projection 57 is arranged so that the branch channel 50.2 can be led to the transfer chamber 30 from there (FIG. 6).
• At least one fan 51 is provided in the region of the branch channel 50.2 branched off from the hood extension 57. This can be connected as shown (Fig. 6) in the region of the transfer chamber 30 to the branch channel 50.2. It is likewise conceivable to arrange at least one fan 51 at the other end in the region of the outlet opening 59 of the hood attachment 57. NEN. In this construction of the extractor hood 1 with the hood projection 57, it is provided that several of the branch channels 50.2 ', 50.2 ", 50.2'" (FIG. 7) can also be branched off into the transfer chamber 30.
• a particular advantage of this construction with the hood projection 57 results from the fact that it can be provided in the region of its directed to the distribution shaft 11 inlet opening 58 with a motor-driven control flap 59.
• This control flap 59 With this control flap 59, a complete closure of the system can be achieved in the closed position (FIG. 8), so that unwanted air leakage from or into the vapor receiving chamber 9 is avoided.
• the control flap 59 can be displaced by means of a drive member 60 in the open position shown in Fig. 9 (arrow SK). It is also conceivable that a continuous adjustment of the control flap 59 is possible and this can also be displaced by manual operation.
• the control flap 59 cooperates with a control unit 63 (FIG. 10) provided for optimizing the exhaust air movement.
• the above-described system of the air duct with "external" branch duct 50.1, 50.2 can be designed in a further simplified design, for example, by providing the branch duct with an extension which replaces or illustrates the transfer chamber 30 shown. This extension then has the direction of the vapor receiving chamber 9 conducting means, so that thus the influence and control of the vapor-air mixture can be made more direct in accordance with the invention.
• This extension then has the direction of the vapor receiving chamber 9 conducting means, so that thus the influence and control of the vapor-air mixture can be made more direct in accordance with the invention.
• the ventilation system 3 is shown in conjunction with a central ventilation system 62 provided in the area of a passenger ship or the like with a multiplicity of hotplates, wherein these in particular have a plurality of connection lines 3 ', 3 "and at least one outlet 65
• This central system has at least one drive 61, which influences the suction power in the lines 3 ', 3 ", in the form of a suction fan or the like.
• This drive 61 cooperates via a central control unit 63 with the components provided in the area of the extractor hood 1 for the exhaust air movement such that an optimum combination of central ventilation 62 and the decentralized delivery components of the hood (s) 1 is achieved.
• a control line 66 to the drive 61 control unit 63 to the control valve 59 (line 67), the fan 51 (line 68) and a differential pressure switch 64 (line 69) is shown.
• the air pressure in the region of the chamber K is used as a reference variable and this is detected by means of the differential pressure switch 64.
• the control unit 63 if the delivery pressure in the chamber K is too low, the power in the region of the radial fan 51 can be increased. In the event that the fan 51 has reached a power limit, then the control flap 59 can be controlled and thus the volume of air detected by the central suction 62 can be increased.
• This interaction of the central and decentralized components can be regulated by appropriate control programs. that optimal extraction conditions in the region of the hood (s) 1 are achieved and thus the energy balance of the overall system is improved. This means that less "heated" air volume is transported away in the region of the connecting line 3 ', the proportions of conditioned air volume in the region of the branch channel 50 are optimally adapted and less fresh air is to be processed in the area of the large kitchen.

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

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Citations (10)

Family Cites Families (2)

• 2012
  • 2012-06-23 DE DE102012012551A patent/DE102012012551A1/de not_active Withdrawn
• 2013
  • 2013-06-19 EP EP13734329.9A patent/EP2864709B1/de active Active
  • 2013-06-19 WO PCT/EP2013/001809 patent/WO2013189598A1/de not_active Ceased
  • 2013-06-19 PL PL13734329T patent/PL2864709T3/pl unknown

Patent Citations (10)

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