• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:AT510003A4
    申请号:T0120010
    申请日:2010-07-15
    公开日:2012-01-15
    发明作者:Christof Braunegg
    申请人:Troges Gmbh；
    IPC主号:
    专利说明:

    1* ·. • i "« F / 43889
    The invention relates to a ventilation device according to the preamble of claim 1, and a method for cleaning and disinfecting a ventilation device according to the preamble of claim 5. Ventilation devices are used in a generally known manner for the ventilation of premises in interior areas, in particular to perform one or more of the following functions Circulation, filtration, heating, cooling, heat recovery, humidification, drying and mixing of air. If the ventilation unit is arranged outdoors, for example on a building roof, outside air is drawn in directly from the ventilation unit, and the exhaust air is discharged directly from the ventilation unit to the outside area. If the ventilation unit is located within a building envelope, outside air is sucked in from the outside area via a ventilation duct to the outside air connection of the ventilation unit, and the exhaust air is discharged from an exhaust air connection of the ventilation unit to the outside via further ventilation ducts. Within the ventilation unit several components are provided to treat the sucked air, such as to filter, heat, cool, dehumidify, humidify or recover heat, and promote by means of fans to a supply air connection of the ventilation unit, of the other, outside lead the ventilation unit lying ventilation ducts to the indoor spaces to be ventilated. The group of those components inside the ventilation device which are arranged along the flow path of the intake air between the outside air connection and the supply air connection is referred to below as the air supply unit of the ventilation device.
    Furthermore, an exhaust air connection is provided in ventilation units, which is connected via further ventilation ducts, which are outside of the ventilation unit, with a spatiality of an interior area, and is extracted via the exhaust air from the premises to be ventilated. Within the ventilation device, in turn, several components may be provided to perform on the extracted air one or more of the above functions, and to promote them using fans to the exhaust port of the ventilation unit. The group of those components inside the ventilation device which are arranged along the flow path of the extracted air between the exhaust air connection and the exhaust air connection is referred to below as the exhaust unit of the ventilation device.
    In the supply air and exhaust air filter are usually provided to filter the sucked and the extracted air. These filters are expediently interchangeable. Nevertheless, it sometimes comes to a rapid contamination of the ventilation device, in particular by organic matter such as bacteria, germs, viruses, spores and other microorganisms that can be removed only inadequately by the use of filters. With disinfectants, the ventilation unit can be cleaned, but manual disinfection is time-consuming, and it is difficult to fully clean the ventilation unit in all corners and crevices. Furthermore, care must be taken to ensure that during normal operation of the ventilation unit there is no load on the supply air caused by disinfectants and the like.
    It is therefore the object of the invention to enable a cleaning, in particular disinfection, of a ventilation device. The cleaning should also be automatable, and avoid contamination of the supply air by disinfectant and the like. being inside
    These objects are achieved by the features of claims 1 and 5. Claim 1 refers to a ventilation unit with a closed ventilation box, which has an outside air connection with an outside air flap, a supply air connection with a supply air flap, an exhaust connection with an exhaust air flap, and an exhaust air connection with an exhaust air flap, wherein within the ventilation device a Zulufteinheit is provided along the flow path of the sucked air is arranged between the outside air connection and the supply air connection, and an exhaust air unit is provided, which is arranged along the flow path of the extracted air between the exhaust air connection and the exhaust air connection. According to the invention, it is provided in such a ventilation unit that controllable circulating air flaps are provided inside the ventilation unit, which in the open position connect the air intake unit to the exhaust air unit, and an ozonation module is provided inside the ventilation unit in the supply air or exhaust air unit.
    Ozonation modules include shortwave UV radiation sources which produce oxygen radicals, particularly singlet oxygen, and ozone in irradiated air, and are also referred to as ozone lamps. The wavelengths of UV radiation required for this move in a range of 100-200 nm, which is also referred to in this area of VUV radiation. The gas mixture produced in this way is extremely reactive and oxidises up to 99.99% of all organic contaminants in the air stream and on the surfaces in the ventilation unit, depending on its concentration and the exposure time, which in turn is given by the UV output of the ozone lamp. The use of ozone lamps dispenses with the use of chemical disinfectants, whereby the oxygen radicals and ozone formed are converted back into oxygen as a result of the purifying oxidation reactions and natural decomposition. By generating an oxidizing gas mixture, an almost complete cleaning and disinfection of the ventilation device can also be achieved in its hard to reach parts.
    In particular, the effect of the oxygen radicals and the ozone formed on fats and other organic substances, as well as resulting odors, which are transported in the air stream, interesting. The highly reactive molecules cause a change in the molecular structure of these organic substances, which eliminates unpleasant odors and also called "cold burning". or "cold oxidation" referred to as.
    Although the cleaning and disinfecting effect could also be achieved by direct UV irradiation with a wavelength of 200-280 nm, which is also referred to as UVC radiation, UVC radiation is only effective over a short distance in the doses relevant here , and decreases quadratically in their radiation intensity in relation to the distance. In contrast, ozone has its effect not only in the source, but in the entire course of the flow until its degradation.
    With the aid of the recirculation air flaps provided according to the invention, a cleaning operation can furthermore be made possible in which the oxidizing gas mixture is circulated within the ventilation device. A load on the supply air with oxygen radicals and ozone is thereby avoided. Furthermore, a rinsing operation can be realized in which, after completion of the cleaning, the highly reactive gas mixture is discharged to the outside to avoid any risk of contamination of the supply air after resumption of normal operation.
    According to a preferred embodiment, two heat exchangers may be provided in the air supply unit, wherein the ozonation module is arranged between the two heat exchangers. Heat exchangers are common components in ventilation units that are used in this embodiment to shield the other components of the ventilation unit from the UV rays of the ozonation module.
    It is further proposed that the ozonation module comprises both a UVC radiation source and a VUV radiation source. On the one hand, UVC radiation has a sterilizing effect, but on the other hand also promotes the breakdown of ozone. A UVC radiation source can thus be used to limit or reduce the ozone concentration.
    Furthermore, it is expedient to arrange a warning light outside the ventilation box, which is switched on when operating the ozone lamp. This warning light thus signals the maintenance personnel to the cleaning operation, in which the maintenance doors of the ventilation unit should not be opened. In order to eliminate any risk, it may further be provided that the ventilation box has maintenance doors which are provided with switches, wherein the switches switch off the ozonation module during operation of the ozonation module and opening of the maintenance doors. As a result, a health hazard of the maintenance personnel is excluded in a proper operation, even with an erroneous opening of the maintenance doors during the cleaning operation.
    The invention further relates to a method for cleaning and disinfection of a ventilation device in which, in normal operation, an air flow is supplied from an outside air flap of an outside air connection to a supply air flap of a supply air connection by means of an air unit of the ventilation device, and an air flow is supplied from an air outlet using an exhaust air unit Exhaust air flap of a Ablnftanschlusses an exhaust air flap of an exhaust air connection is supplied. According to the invention, it is provided that in the cleaning operation, the outside air damper, the supply air flap, the exhaust damper and the exhaust air damper are closed, and by opening, arranged within the ventilation unit recirculation flaps Zulufteinehit is connected to the exhaust unit on both sides, the cleaning and disinfection of, on this Way within the ventilation unit circulated air using an ozonation occurs. The ozonation module is only switched on in the cleaning mode. The two-sided closing of the supply air and exhaust air unit produces a self-contained recirculation line, along which the air inside the ventilation unit is circulated and irradiated by the UV sources of the ozonation module to produce oxygen radicals and ozone. In this way, a continuous cleaning and disinfection of the air and surfaces located within the ventilation unit takes place without causing any stress from the highly reactive cleaning or disinfecting gas outside of the ventilation unit.
    Furthermore, a rinsing operation is proposed in which the outer air damper and the exhaust air damper are opened when the UV sources of the ozonation module are switched off, and the supply air unit with the exhaust air unit is only closed on one side by opening a circulating air damper.
    The invention will be explained in more detail below with reference to an embodiment with reference to the accompanying drawings. It show here
    1 is a schematic representation of an embodiment of a ventilation unit with the flow paths in normal operation,
    Fig. 2, the ventilation device according to FIG. 1 in the cleaning operation, and the
    3 shows the ventilation device according to FIG. 1 during flushing operation.
    The decisive for the invention components of an embodiment of a ventilation device will first be explained with reference to FIG. 1. In this case, the ventilation unit has a closed ventilation box 1, on which there is an outside air connection 2 with an outside air flap 3, via which external air is drawn in by means of a supply air fan 4 and fed to a supply air connection 5 with a supply air flap 6. 1-3, via which the supply air is supplied to the premises to be ventilated of an interior area, the connection can be made via flexible connecting pieces in order to prevent structure-borne noise transmissions to the connected ventilation system Those components which are arranged along the flow path of the intake air between the outside air connection 2 and the supply air connection 5 are referred to herein as air supply unit The premises to be ventilated are extracted by means of an exhaust air fan 9 and supplied to an exhaust air connection 10 with an exhaust air flap 11. Those components which are arranged along the flow path of the extracted air between the exhaust air connection 7 and the exhaust air connection 10 become in its entirety herein referred to as exhaust unit. The exhaust port 7 and the exhaust valve 8 is also connected via ventilation ducts with the premises to be ventilated, which are not apparent in Figs. 1-3. The exhaust air connection 10 is further connected to an outdoor area. In the supply air and exhaust air filter 12 are usually arranged, which are designed to be interchangeable.
    For heat recovery from the exhaust air as a cross-flow heat exchanger 13 is used, via which the heat of the exhaust air is transferred to the mostly colder outside air.
    FIG. 1 furthermore shows the components essential to the invention, namely two circulating air flaps 14, 15, and the ozonation module 16, which contains one or more UV sources, for example a UVC and a VUV radiation source. As already mentioned, in VUV irradiation of air, oxygen radicals, in particular singlet oxygen, and ozone are produced. On the one hand, UVC radiation has a sterilizing effect, but on the other hand also promotes the breakdown of ozone. A UVC radiation source can thus be used to limit or reduce the ozone concentration more quickly. Therefore, it is intended, for example, to use in the ozonation module 16 both a VUV radiation source for the production of the ozone and a UVC radiation source for the reduction of the ozone concentration. Furthermore, an ozone sensor is mounted on the inner wall of the ozonation module 16, and connected via a PG-gland to a mounted on the outer wall of the ventilation box 1 ozone monitor.
    An outside area-side recirculation damper 14 is arranged at those ends of the supply air and exhaust air unit, which are located in the region of the outside air flap 3 and the exhaust air flap 11. An inside recirculation damper 15 is arranged at those ends of the supply air and exhaust air unit, which are located in the region of the exhaust air flap 8 and the inlet flap 6. The exact positioning of the recirculating air flaps 14, 15 is not essential, but they must connect the flow path within the supply air and exhaust air in its open position, thus allowing a circulation of air within the ventilation unit along a closed recirculation path. The ozonation module 16 is arranged between two heat exchangers 17, 18, which on the one hand serve for heating and / or cooling the supply air, but in the arrangement shown also shield the UV radiation generated by the ozone lamp from the other components of the ventilation device.
    The fresh air flap 3, supply air flap 6, exhaust air flap 8, and the exhaust air flap 11 are preferably designed as high-density flaps to minimize leakage into the adjacent air duct system during the cleaning phase. For the supply air fan 4 and the exhaust fan 9 so-called EC fans are preferably used, optionally with hygienic coating. These fans are characterized by energy efficiency and good controllability even at low air volumes. Furthermore, a regulation is provided which controls the outside air flap 3, inlet air flap 6, exhaust air flap 8, exhaust air flap 11, the recirculation flaps 14, 15, the ozonation module 16, and the supply air fan 4 and the exhaust fan 9. About the regulation can from
    Operator manually or automatically the normal operation, the cleaning operation, or the rinsing operation are activated.
    If the ventilation unit is produced in a compact design and provided with flaps on all sides, it is not present in the vicinity of the ventilation unit, for example in the ventilation center or in the entire ventilation network, and thus also in the rooms connected to the ventilation system during the cleaning and flushing operation Ozone load to be expected.
    To increase safety, the inspection door of the ozonation module 16 will be provided with a corresponding warning sticker (warning against optical radiation). The closures of the revision door are expediently designed such that they can only be removed by means of tools, e.g. Open-end wrench to open. During the cleaning operation, a red warning light illuminates and signals the presence of a high ozone concentration inside the ventilation unit. In cleaning and purging all maintenance doors of the ventilation unit and the Endkontaktschalter the high-density fresh air damper 3, supply air flap 6, exhaust damper 8, and the exhaust damper 11 are monitored electrotechnically, and lead to improper closing or opening during this phase to an alarm and an emergency shutdown, and others Alerting and, where appropriate, emergency rinsing in the form of rapid discharge of ozone-containing air into the atmosphere.
    The normal operation, ie the ventilation of the premises in an interior, can be taken about using a positive locking only when the two recirculation flaps 14, 15 are completely closed, the ozone lamps are disabled and the intended purge operation has expired in the required intensity. During normal operation of the ventilation system, the ozone lamps (UVC and VUV) are electronically locked. The opening of the inspection doors is then completely safe and unsecured possible, in particular, no electronic monitoring during normal operation is required.
    Fig. 1 shows the flow paths in normal operation of the ventilation unit. Here, the fresh air flap 3, supply air flap 6, exhaust flap 8, and the exhaust air flap 11 are open, the recirculation flaps 14, 15, however, closed. The flow paths within the supply air and exhaust air unit of the ventilation unit thus run separately from each other. For heat recovery may be provided about a cross-flow heat exchanger 13, but other forms of heat recovery can be used. Filtering of the intake and exhaust air takes place with the aid of the filter 12.
    Optionally, the ventilation unit can be manually or automatically switched to the cleaning mode, the outside air flap 3, supply air flap 6, exhaust flap 8, and the exhaust air flap 11 are closed, the recirculation flaps 14, 15, however, open. The supply air fan 4 is stopped, and the exhaust fan 9 operates with a small amount of air. This configuration is shown in FIG. The supply air and exhaust air unit are thus closed on two sides, whereby a circulation of air within the ventilation unit is effected. At the same time, the UV sources of the ozonation module 16 are put into operation, which irradiate the circulated air and generate oxygen radicals and ozone in the Strörr.ungsweg using the atmospheric oxygen. This highly reactive gas mixture is circulated throughout the interior of the unit using circulating air, ensuring effective and near-complete cleaning and disinfection of the ventilation unit's interior.
    Both the VUV radiation source for the production of the ozone and the UVC radiation source for the reduction of the ozone concentration are monitored by two independent control panels (not visible in Figs. 1-3). These signal the failure of individual radiation sources, as well
    11 the approaching expiration of the tube life of the radiation sources.
    The ozone monitoring device signals on a display the current ozone concentration in the interior of the ventilation unit. It switches off the VUV radiation source when reaching a desired concentration, about 20 mg / m3. In the event of a drop below a desired minimum concentration, about 15 mg / m3, the VUV radiation source will be switched on again, provided that the ventilation unit is in cleaning mode. In any case, this switch-on function is forcibly locked.
    The cleaning and rinsing operations are with the
    Slow-speed function of exhaust fan 9 forcibly coupled. In the event of exhaust fan 9 malfunction, or in other abnormal operating conditions, the UV radiation sources can not be put into operation by means of a positive lock, and a fault message is triggered.
    After a predetermined period of time, which ensures the complete cleaning and disinfection of the ventilation unit, can be switched to a purge mode by the
    Outside air damper 3 and the exhaust air damper 11 are opened, and the outside area recirculation damper 14 is closed, and the ozonation module 16 is turned off. This configuration is shown in FIG. The Zulufteinheit is thus connected to the exhaust unit only on one side, namely by means of the inner-side recirculation damper 15 at those ends of the supply air and exhaust unit flap in the exhaust air 8 and the supply air flap 6 are. In this way, a rinse is produced, rinsed on the remaining ozone from the interior of the ventilation unit and discharged into the outdoor area.
    After a predetermined period of time, which ensures the complete flushing of the ventilation unit, back to the
    Normal operation can be switched by the outside air damper 3, supply air flap 6, exhaust air flap 8, and the exhaust air flap 11 open, the recirculation flaps 14, 15, however, are closed. The flow paths within the supply air and exhaust air thus again run separately from each other (see Fig. 1). A load on the supply air with highly reactive gases containing oxygen radicals and ozone can be avoided in this way.
    With the aid of the invention, a cleaning, in particular disinfection, of a ventilation device is thus made possible, which in particular can be automated, and avoids contamination of the supply air by disinfectants and the like. The inner areas of the ventilation unit can be almost completely disinfected and sterilized.
    权利要求:
    Claims (4)
    [1]
    1. Ventilation device with a closed ventilation box (1) having an outside air connection (2) with an outside air flap (3), a supply air connection (5) with a supply air cap (6), an exhaust air connection (7) with an exhaust air flap (8), and an exhaust air connection (10) with an exhaust air flap (11), wherein within the ventilation unit a Zulufteinheit is provided, which is arranged along the flow path of the sucked air between the outside air connection (2) and the supply air connection (5) and an exhaust air unit is provided , which is arranged along the flow path of the extracted air between the exhaust port (7) and the exhaust air port (10), characterized in that controllable recirculating air dampers (14, 15) are provided within the ventilation device, which connect the air supply unit with the exhaust air unit in the open position , and within the ventilation unit in the supply air or exhaust air an ozonation l (16) is provided. 2. Ventilation device according to claim 1, characterized in that in the Zulufteinheit two heat exchangers (17, 18) are provided, and the ozonation module (16) between the two heat exchangers (17, 18) is arranged. 3. Ventilation device according to claim 1 or 2, characterized in that the ozonation module (16) comprises both a UVC radiation source, as well as a VUV radiation source. 4. Ventilation device according to one of claims 1 to 3, characterized in that the ventilation box (1) has maintenance doors, which are provided with switches, wherein the switches during operation of the

    14 Unscrew the ozonation module (16) and open the maintenance doors to stop the ozonation module (16).
    [2]
    5. A method for cleaning and disinfecting a ventilation device, in which in normal operation by means of a Zulufteinheit the ventilation device, an air flow from an outside air flap (3) Außenluftanschius (2) an air inlet flap (6) of a supply air port (5) is supplied, and with the aid of an exhaust air unit Air flow from an exhaust air flap (8) of an exhaust port (7) an exhaust air flap (11) is supplied to an exhaust air connection (10), characterized in that in the cleaning operation, the fresh air flap (3), the supply air flap (6), the exhaust damper (8) and Exhaust air damper (11) are closed, and by opening, arranged inside the ventilation unit air recirculation flaps (14, 15), the air supply unit is connected to the exhaust air unit on two sides, wherein the cleaning and disinfection of the, thus circulated within the ventilation unit air using an ozonation ( 16).
    [3]
    6. The method according to claim 5, characterized in that a rinsing operation is provided in which the outer air damper (2) and the exhaust air flap (11) is opened when the ozonation module (16) is switched off, and by opening a recirculation damper (14) the Zulufteinheit with the Exhaust unit for producing a Spülweges is only connected on one side. Vienna, am
    [4]
    15, July 2010

    Patenta

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