WO2018010971A1

WO2018010971A1 - Ventilation arrangement having a vapor extraction hood

Info

Publication number: WO2018010971A1
Application number: PCT/EP2017/066188
Authority: WO
Inventors: Heinrich Wagener
Original assignee: Heinrich Wagener
Priority date: 2016-07-13
Filing date: 2017-06-29
Publication date: 2018-01-18
Also published as: EP3485199B1; DE202016004286U1; EP3485199A1

Abstract

Ventilation arrangement having a vapor extraction hood for the galley area of marine equipment, that, by means of an outlet pipe of a venting system, forms a vapor receiving chamber which is open at the bottom in the installed position, whence vapor is received at least in one duct via a separator and is conveyed to the outlet pipe as exhaust air. The duct provided in the form of a distribution shaft is provided with a recirculation connection that collects a partial volume of the filtered exhaust air, this recirculation connection discharges toward the vapor receiving chamber in the region of at least one transit chamber and at the exit thereof there is provided a cover that influences the flow direction of the recirculated partial volume. There is provided a branch duct which forms the recirculation connection and which extends, outside the vapor receiving chamber, between the region of the distribution shaft and of the transit chamber. Thus, a partial volume of the exhaust air can be recirculated from the region of the distribution shaft into the vapor receiving chamber. The venting system is connected to a motorized central ventilation system as the source of suction, which interacts via a control unit with a drive member of a control flap. A guide sensor, which influences the operating values of the control unit, is integrated into the fluid conveying system that receives exhaust air.

Description

Ventilation arrangement with an extractor hood

The invention relates to a ventilation arrangement with a vapor extraction hood provided according to the preamble of claim 1.

From DE 10 2010 049 363 A1 a ventilation arrangement with an extractor hood is known 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. In this hood construction, an additional supply line can be integrated so that the extractor hood fresh air can be supplied in the vicinity of the extractor chamber. In the case of an extractor hood according to DE 36 23 210 A1, 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.

Starting from this basic construction with a distribution well, 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 Light irradiated and filtered exhaust air in the area behind the separator either from the distribution shaft or a transfer chamber are returned to the vapor receiving chamber. A mixture with fresh air is also provided for this professional hood design. According to EP 0 401 583 A1, a construction which can be used in private kitchens as a circulating air hood with only one fan is shown. In the area of an air treatment chamber, a peripheral vortex nozzle is intended to improve the delivery of the exhaust air via the fan to a passive exhaust air line. The central "circulating air blower" generates the exhaust air flow, serves for the horizontal generation of pressure and causes edge eddying, so that overall only a small exhaust air disposal is possible. In a similar extractor hood according to DE 10 2006 032 477 A, this is designed as a cuboid housing, so that a closed filter box is provided for private cooking areas. In this case, the only fan of the system on the output side interacts directly with respective separator and filter elements, so that this fan is exposed to disadvantageous high loads and the filter performance is adversely limited.

A similar construction of a circulating unit is shown in US 4 127 106 A, wherein by means of a blower, the air is circulated in front of the Ausleitstutzen. According to US Pat. No. 4,541,409, a supply air duct and an exhaust duct are combined in a filter box in parallel, and in a circulation according to US 2005/0051 159 A1, a vertical air jet is generated in the region of a hob. Also US

2006/0278216 A1 and US 4 438 316 A show respective circulating units. A generic ventilation arrangement according to WO 2013/189598 A1 shows an extractor hood connected to a central ventilation system of a ship. This is provided with a controllable drive for air displacement, with only a differential pressure switch can detect the operating pressure and thus optimal control with a view to the total energy in the exhaust air system is limited.

The invention is concerned with the problem of providing a ventilation arrangement for an extractor hood located on a central ventilation, in which, with little technical effort, an assembly which can be variably used, in particular, in commercial kitchens of ships, is realized for exhaust air ducting on the hood system and thereby the kitchen unit is sucked in. Wrasen can be optimally extracted and / or distributed under the perspective of energy conservation.

The invention solves this problem with a ventilation arrangement with an extractor hood according to claim 1. Further advantageous embodiments will become apparent from the claims 2 to 1. 1

The ventilation arrangement with an extractor hood connected to a central extraction unit is provided with a return connection which has at least one branch duct extending as a functional additional part of the system outside the extractor space bounded in particular by the ceiling part and the longitudinal and transverse side parts. This is designed as a variable to the construction of the respective hood customizable additional module. With this branch channel According to the customer-specific installation conditions on the system - in particular in the area of large kitchens on ships connected to a central extraction system - optimum influencing and distribution of an exhaust air flow is possible so that with a fed back to the central extraction from the hood control and automatic control significant energy savings be achieved.

The extractor hood is provided in the region of its filtered exhaust air receiving fluid system with an engaging in this guide sensor and this allows the respective optimum operating values via a connection to the control unit. In this case, the guide sensor is designed in such a way that, in particular in the area of the channel of the fluid system, mixed air consisting of circulating air, external fresh air and / or kitchen vapor can be detected by means of a variably configurable sensor structure. It is likewise provided that a plurality of guide sensors which can be activated in different channel zones are arranged in the region of the fluid system having the channel K.

In this case, the system is geared to ensure that the cooperating with the control unit guide sensor is designed in particular as a temperature sensor. This ensures that the above-described overall system with return connection and the central ventilation can be optimized from an energetic point of view. It is also conceivable to provide a humidity sensor as a guide sensor. Based on the fact that in the control unit, a complex evaluation of sensor data is possible, a simultaneous evaluation of multiple temperature and / or humidity sensors is possible, so that according to the temperature conditions in the range of located under the hood heating and heating systems optimum air control in the from the receiving space ascending Wrasen and the mixed air generated in the channel is possible.

It is possible to equip the extractor hood in the region of the branch channel and / or the transfer chamber with the respective guide sensors and / or further separate sensors.

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. With 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. At the same time a flow system is generated with the guided over the return connection of the branch channel partial volume of the exhaust air, with which an unwanted escape of moisture-containing haze can be avoided in the environment of the hood.

The circulating air partial volume fed into the extractor chamber via the branch channel and a transfer chamber can be controlled and directed in fluidic optimization such that this partial branched off from the "heated" exhaust air volume flows only in the area below the hood near the 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.

This makes it clear that the extractor hood can be optimally controlled with a suction-blower combination in the vicinity of its separator. This largely closed with regard to the above-described air circulation circuit sub-system of the air and Wrasenleitung is constructed so that "only purified" exhaust air from the return connection can be used. Thus, the previously usual blowing of fresh air can be reduced to a minimum and energy saved. At the same time, the recirculated partial volume on the central extractor connected to the extractor hood has the effect that - due to the "recirculated" partial volume - lower extraction power achieves energy savings of 25% to 90% (based on the total circulated air volume) at the extractor hood can be. A variably conceivable control concept on the basis of the central ventilation or central extraction of the ship provides that respective decentralized conveyor components in the extractor hood can be adjusted by means of a programmable control unit to a respectively optimal state of the exhaust air discharge and the partial exhaust return. This can be a substantial energy savings in the overall system, in particular a passenger ship with multiple Absaugpositionen be reached.

An improvement of the hood embodiment according to the invention provides that at least one guide sensor which influences the respectively optimizable operating values of the control unit is provided in the filtered exhaust air of the filtered exhaust system. This guide sensor is preferably integrated in the region of the exhaust air immediately after the filtering receiving channel so that detected in this area from ambient air, external fresh air and / or kitchen art existing mixed air and detects their condition, especially with regard to the temperature and humidity can be.

A further improvement of the system provides that the ventilation arrangement can also be provided in the region of the return connection with the guide sensor in the area of the exhaust air duct and / or further duct parts. This ensures that by means of several such detectors in each case in different channel zones, the fluid parameters can be detected and thus the control unit can respond automatically to varying conditions by corresponding activation signals. In an advantageous embodiment, it is provided that the guide sensor is designed as a temperature sensor. It is also conceivable that a humidity sensor is integrated into the system as a guide sensor. The common arrangement of humidity and temperature sensors is conceivable.

With regard to the structurally optimized ventilation arrangement, provision is made in particular for the extractor hood to have the respective guide sensor in the area of the branch channel and / or the transfer chamber, or additional or separate sensors can also be installed here.

An extension of the concept with controllable guide components provides that the extractor hood is provided with at least one additional heat exchanger in the area of the fluid system through which the mixed mixed air flows. This heat exchanger is designed so that its control and regulating assemblies can interact with the sensor-controlled control unit and thus the effect of the heat exchanger can be monitored and regulated.

An optimal design of this additional module provides that by means of the heat exchanger, the mixed air formed in the duct acting as a distribution shaft is already cooled. The dissipated heating power can be supplied to an external service water system or the like. The arrangement of these assemblies provides that in the flow direction of the sucked exhaust air - immediately behind the filters of the channel acting as a distribution well - the heat exchanger is associated with an incoming air mixture. It should superiors see that as a heat exchanger respective pipelines are integrated into the hood. It is also conceivable that already by the double-walled design of the walls of channel zones, a respective flow space for in this "integrated" heat exchanger as a transmission medium flowing fluids is formed.

Further details and advantageous embodiments of the invention will become apparent from the following description and the drawing, in which an embodiment of the ventilation arrangement according to the invention with integrated guide sensor is illustrated. 1 shows a partially sectioned side view of the extractor hood with a guide sensor integrated into the branch channel,

2 shows a front view of the extractor hood according to FIG. 1 with a view of the exhaust duct receiving rear duct with filter, FIG.

3 is a plan view of the extractor hood of FIG. 1,

Fig. 4 is a partially sectioned front view similar to FIG. 2, and

Fig. 5 is a side view similar to FIG. 1 with a schematic representation of

Assemblies in the area of the control unit and the guide sensor. In Fig. 1, a generally designated L ventilation arrangement (Fig. 5) is shown in a side view, wherein a total of 1 designated extractor hood is connected to this assembly. 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 cooperate in particular with an external suction drive (central ventilation 62, FIG. 5), by means of which an air flow S can be generated such that water and / or greasy vapor from the extractor chamber 9 is discharged through a separator 10 in a generally K. designated channel is received in the form of a distribution shaft 1 1 and forwarded as a largely purified exhaust air T (dashed line, Fig. 1) to the outlet port 2 out.

In this case, provided as a distribution well 1 1 channel K is provided with at least one partial volume TV of the filtered exhaust air T detecting return connection TR. This return connection TR opens to the vapor receiving chamber 9 out in Area of at least one transfer chamber 30 from. At its outlet, a cover 34 influencing the flow direction TR "of the recirculated partial volume TV is provided.

This extractor hood 1 has (as shown in FIGS. 1 to 5) an optimized return connection TR, the latter being provided with a branch channel 50.1 (FIG. 2) which can be connected to the hood plates as an additional module. With this branch channel 50, a variably configurable additional module is provided. This forms a substantially outside of - from the ceiling part 4 or longitudinal and transverse side parts 5, 6, 7, 8 limited - Dunstaufnahmeraumes 9 extending while the area of the distribution shaft 1 1 connected to the transfer chamber 30 return connection TR. This ensures that by means of variable versions of this - constructive simplifications of the known "integrated" hoods causing - branch channel 50 a partial volume TV of purified exhaust air from the region of the distribution shaft 1 1 is largely conveyed directly into the transfer chamber 30. By means of respective guide means, the partial volume TV can be specifically forwarded from the transfer chamber 30 into the vapor receiving chamber 9.

For efficient use of the respective branch channel 50.1 or 50.1 '(FIG. 3), it is provided that these each interact with at least one fan 51 separating the partial volume TV from the filtered exhaust air T as activatable conducting means. From the plan view of FIG. 3 it is clear that in the region of the respective transfer chambers 30 a plurality of branch channels 50.1 provided with respective fans 51 and 50.1 '. This opens up further options for controlling and returning the respective partial volume TV (FIG. 5).

With this branch-channel concept, a further optimization in the area of the respective transfer chamber 30 is connected. It is advantageously provided that the partial volume TV of the filtered exhaust air T which can be diverted from the transfer chamber 30 in the region of its cover 34 is provided in a part 4 of the extractor hood 1 in the ceiling

Essentially parallel conveying direction - according to TV - flows (Fig. 1). This ensures that the partial volume TV flowing from the transfer chamber 30 can reach the separator 10 of the distribution shaft 1 1 largely without changes of direction. For this purpose, each acting as an obstacle components have been removed in this area. An additional improvement of this optimally controllable flow path is provided that the transfer chamber 30 is additionally provided in the region of its cover 34 with respective flow nozzles 52.

In Figs. 1 and 5 show the partially sectioned side views (with open distribution shaft 1 1) the arrangement in the region of the branch channels 50.1 and 50.1 '(Fig. 3). In this case, the per se known UV tube system 35 is visible, with which in the region of the distribution shaft 1 1 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 for ventilation. This acting as a distribution shaft 1 1 region of the channel K is designed so that here a mixed air from circulating air, external fresh air and / or kitchen art can be formed. In the region of an inlet opening 58 (FIG. 5) directed towards the distribution shaft 11, the system can be provided with a control flap 59 that can be driven by a motor. With this control flap 59, a complete closure of the system can be achieved in the closed position (FIG. 5), 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, not shown, from the closed position to an open position, not shown. It is also conceivable that a continuous adjustment of the control flap 59 is possible and this can also be displaced by manual operation. In particular, the control flap 59 cooperates with a control unit 63 (FIG. 5) provided for optimizing the exhaust air movement.

In the illustration according to FIG. 5, 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 plurality of hotplates, this having in particular a plurality of connection lines 3 'and at least one outlet 65. This central system has at least one of the suction power in the lines 3 'influencing drive 61 in the form of a suction fan o. The like. Aggregate on.

This drive 61 cooperates with the components provided in the region of the extractor hood 1 for exhaust air movement via a central control unit 63 in such a way that an optimum combination of effective central ventilation 62 and the decentralized delivery components of the fluid system is achieved. For example, in FIG. Binding of connected to a control line 66 to the drive 61 control unit 63 to the control valve 59 (line 67), the fan 51 (line 68) shown.

During operation of this system applied to the central extraction system 62, in known systems, for example, the air pressure in the region of the chamber K is used as a reference variable. As a result of a setpoint comparison provided in 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 cooperation of the central and decentralized components can be controlled by appropriate control programs so that optimal extraction conditions in the range of the extractor hood 1 are achieved and thus the energy balance of the entire 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 (or 50.1, 50.1') are optimally adapted and less fresh air is to be processed in the area of the large kitchen ,

The practical implementations of this complex system with a variably adjustable control system have shown that optimum ventilation conditions are achieved in each case and an advantageous energy saving is achieved with regard to the energy balance of such projects - in particular on passenger ships as self-sufficient units with multi-level distributed cooking zones. A substantial improvement is achieved according to the invention in that the extractor hood 1 is provided with a guide sensor 70 (FIG. 4) which engages in the filtered exhaust air and the respectively optimum operating values via a connection 71 with the control unit 63 allows. The guide sensor 70 is designed in such a way that, in particular in the region of the channel K of the fluid system, a mixed air consisting of circulating air, external fresh air and / or kitchen vapor can be detected by means of a variably configurable sensor structure. It is likewise provided that in the region of the fluid system having the channel K, a plurality of guide sensors 70 which can be activated in different channel zones are arranged (not shown).

In this case, the system is geared to ensuring that the guide sensor 70 cooperating with the control unit 63 is designed in particular as a temperature sensor. This ensures that the above-described overall system with feedback connection TR and the central ventilation 61 can be optimized from an energetic point of view. It is also conceivable to provide a humidity sensor as the guide sensor 70.

Based on the fact that a complex evaluation of sensor data is possible in the control unit 63, a simultaneous evaluation of several temperature and / or humidity sensors is possible, so that according to the temperature conditions in the range of heating and heating systems located under the extractor hood 1 optimal air control in the area of the receiving space 9 rising vapors and the mixed air generated in the channel K is possible.

A further improvement can be achieved in that the extractor hood 1 in the region of the branch channel 50.1 and / or the transfer chamber 30 is equipped with the respective guide sensors 70 and / or further separate sensors.

In order to optimize this optimally detectable extractor hood 1, it is provided that it can additionally be provided with at least one heat exchanger 72 in the area of the channel system through which the mixed mixed air flows. This heat exchanger 72 in turn can be adjustable by means of a control element 73 and interact with the sensor-controlled control unit 63 (connection 74).

With this additional component in the form of the heat exchanger 72, in particular the mixed air formed in the channel K acting as a distribution well 1 1 can be cooled, and the heat output that can be dissipated can be supplied to a service water system with little effort so that further energy savings are possible. It is provided that in the flow direction of the sucked exhaust air immediately behind the filters 75 of the channel K, the heat exchanger 72 is optimally placed. Taking advantage of known heat transfer media such as water, oil o. The like. It is provided that respective, the heat exchanger 72 forming pipes can be integrated into the hood 1. It is also conceivable that in the system double-walled versions of the pipe walls form respective pipes (not shown) and thus the housing walls are designed as a "direct" heat exchanger.

Claims

claims

1 . Ventilation arrangement with an extractor hood for the kitchen area of a ship's equipment, whereby the venting system (3) acting as a central extraction (62) by means of an outlet connection (3) forms a vapor receiving space (9) which is open in installation position, out of which water and / or or fatty haze via a separator (10) is received in at least one channel (K) and forwarded as largely purified exhaust air (T) to the outlet (2), and provided as a distribution shaft (1 1) channel (K) with at least one a partial volume (TV) of the filtered exhaust air (T) detecting return connection (TR) is provided, these in the region of at least one Überleitkammer (30) opens to the vapor receiving space (9) and at the outlet of a flow direction (TR ") of the recirculated partial volume ( TV) influencing cover (34) is provided, wherein at least one the return connection (TR) forming branch channel (50.1, 50.2) is provided, the extends substantially outside the vapor receiving space (9) between the region of the distribution shaft (1 1) and the transfer chamber (30) and thus a partial volume (TV) of the purified exhaust air (T) from the region of the distribution shaft (1 1) directly into the The venting system (3) to a controllable drive (61) having central ventilation (62) is connected as the suction via a control unit (63) with at least one drive member (60) of a control flap (59) cooperates, such that at least the exhaust air in the interior (K) of the distribution shaft (1 1) is adjustable to an optimizable operating value, characterized indicates that in the filtered exhaust air (T) receiving fluid control at least one of the respectively optimizable operating values of the control unit (63) influencing guide sensor (70) is integrated.

2. Ventilation arrangement according to claim 1, characterized in that in the region of the channel (K) of the fluid system from a circulating air, external fresh air and / or kitchen art existing mixed air by means of the guide sensor (70) is detectable.

3. Ventilation arrangement according to claim 1 or 2, characterized in that in the region of the channel (K) having fluid system several each activatable in different channel zones guide sensors (70) are provided.

4. Ventilation arrangement according to one of claims 1 to 3, characterized in that the guide sensor (70) is designed as a temperature sensor.

5. Ventilation arrangement according to one of claims 1 to 4, characterized in that the guide sensor (70) is designed as a humidity sensor.

6. Ventilation arrangement according to one of claims 1 to 5, characterized in that the extractor hood (1) in the region of the branch channel (50.1) and / or the transfer chamber (30) has the guide sensor (70) and / or separate sensors.

7. Ventilation arrangement according to one of claims 1 to 6, characterized in that the extractor hood (1) is provided in the region of the through-flow of the treated mixed air duct system with at least one heat exchanger (72).

8. Ventilation arrangement according to claim 7, characterized in that the heat exchanger (72) cooperates with the sensor-controlled control unit (63).

9. Ventilation arrangement according to claim 7 or 8, characterized in that by means of the heat exchanger (72) in which the distribution channel (1 1) acting channel (K) formed mixed air can be cooled and thereby dissipating heating power to a service water system can be fed.

10. Ventilation arrangement according to one of claims 7 to 9, characterized in that in the flow direction of the sucked exhaust air directly behind the filters of the channel (K) of the heat exchanger (72) is arranged.

1 1. Ventilation arrangement according to one of claims 7 to 10, characterized in that in the extractor hood (1) respective the heat exchanger (72) forming pipes can be integrated.