• 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:BE1020569A3
    申请号:E201100232
    申请日:2011-04-21
    公开日:2014-01-07
    发明作者:Jan Jansen
    申请人:J P Systems B V；
    IPC主号:
    专利说明:

    Device for forming an air curtain for shielding the access opening of an acclimatized space, acclimatized space and transport vehicle
    The invention relates to a device for forming an air curtain for shielding the access opening of an acclimatized space, comprising a housing which is provided with at least one supply for supplying air from the acclimatized space, at least one elongated discharge opening remote from the at least one supply and air displacing means for moving air from the at least one supply through the at least one elongated first discharge opening to outside the housing for forming an air curtain extending substantially in one plane. The invention also relates to an acclimatized space. The invention further relates to a transport vehicle.
    Air curtains are used to shield the access opening of an acclimatized room. For this purpose, a stream of air is blown under pressure along the access opening of the acclimatized room, for example, along a door opening. The local overpressure caused by the air curtain ensures that no air from outside the room enters the acclimatized room through the access opening. Consequently, without physically shielding the room such as, for example, by means of a door, the risk of undesired temperature variations of the air in the acclimatized room is reduced. This is advantageous for persons as products in the room or one of the two, in particular products that are required to be stored in a predetermined temperature range.
    Known devices for forming an air curtain are designed to be compact and include a housing that is provided with at least one elongated outlet opening, a supply directed to the space to be shielded and a fan for sucking air through the feeding and blowing the air out of the housing through the elongated discharge opening to form an air curtain that extends substantially in one plane. On average, the width of the elongated discharge opening is approximately 10 mm, the thickness of the air curtain increasing with increasing distance from the discharge opening to approximately 20 - 40 cm near the end of the air curtain.
    A known example of the use of an air curtain is the screening of the access opening of an acclimatized loading or cargo space of a transport vehicle. Depending on the products to be transported and the climate along the transport route, the acclimatized cargo space is heated by a heating device and / or cooled by an air conditioning, in case the temperature surrounding the cargo space is relatively low and relatively high, respectively. When the access door is opened, for example during the (partial) loading and unloading of the cargo space, the air curtain reduces the risk that air from outside the space enters the cargo space. If the air is sucked from the acclimatized loading space to the device for forming an air curtain, the desired air temperature in the loading space can easily be maintained.
    Transport vehicles and their cargo spaces tend to become larger. Use is made of cooling or heating devices for air-conditioning the load space with an increased capacity or of multiple devices to maintain the desired temperature within a preferred range in substantially the entire relatively large load space. Consequently, acclimatization of relatively large spaces requires a lot of energy. In the case that the acclimatized space is a loading space of a transport vehicle, this leads to an increased fuel consumption, which is relatively expensive, environmentally unfriendly and leads to a reduced range of the transport vehicle.
    It is an object of the present invention to provide a device for forming an air curtain that at least partially overcomes the aforementioned disadvantages.
    According to the invention, one of the objectives is achieved by means of a device for forming an air curtain for shielding the access opening of an acclimatized space, comprising a housing, which is provided with at least one supply for supplying air from the acclimatized space, at least one elongated first outlet opening remote from the at least one inlet and air displacement means for moving air from the at least one inlet through the at least one elongated first outlet opening outside the housing to form a air curtain extending substantially in a plane, the housing further comprising at least one second outlet opening spaced from the at least one supply and air displacement means for moving air from the at least one supply through the at least one one second outlet opening outside the housing e n outside the plane of the air curtain. By blowing air outside the housing and outside the plane of the air curtain, an air flow is formed in the acclimatized space, which distributes air through at least a part of the acclimatized space. Consequently, variations in the air temperature in the acclimatized room have decreased.
    The second discharge opening can be very close or even adjacent to the first discharge opening. The first and second discharge openings may even be part of one end of a single passage. A valve located at the end of the passage can be oriented such that the air flows from the first and / or second discharge opening in the preferred direction. The at least one second discharge opening and the at least one elongated first discharge opening are preferably spaced apart. This is advantageous in that the air flowing out of the at least second discharge opening has no or at least a slight influence on the air curtain which is formed by air flowing out of the at least one first discharge opening. Consequently, the device is arranged to distribute air in the room, leading to smaller temperature variations, without affecting the effect of the air curtain for shielding the access opening of the room.
    The second outlet opening is provided and / or directed for blowing air out of the plane of the air curtain. The air can be blown outside the housing of the device at a distance from the air curtain, in a direction parallel to the air curtain. The at least one second outlet opening can for instance be situated at 1.0 meter from the first outlet opening, wherein a second air curtain is established for distributing air in the room. The discharge opening can also be arranged and / or directed such that the air is blown outside the housing of the device at an angle with respect to the air curtain. This can surprisingly lead to a significant decrease in the variations of the air temperature in the acclimatized room. A relatively simple construction is obtained in the case that the at least one first and second discharge openings are located in first and second wall parts of the housing, which first and second wall parts extend in a mutually substantially perpendicular direction.
    The device can be designed in various ways. In one embodiment, the air displacement means are located in the at least one supply. This leads to a simple design of the housing, since air displacement means at only one location in the housing can be sufficient for blowing air through the at least one and first discharge openings to outside the housing of the device.
    To increase the operational flexibility of the device, the housing comprises first air displacement means for displacing air through the at least one first outlet opening and second air displacement means for displacing air through the at least one second outlet opening. In this way the air can be controlled independently through the at least one first and second discharge openings. A relatively small airflow through the at least one first outlet opening can thus be combined with a relatively large airflow through the at least one second outlet opening.
    In another embodiment, the housing comprises a first supply in connection with the at least one first discharge opening and a second supply in connection with the at least one second discharge opening. In this way the design of the device can be further improved depending on the specific circumstances. For example, the first supply for the at least one first outlet opening for forming an air curtain can be arranged and / or directed for supplying air with the temperature of the acclimatized space, while the second supply can be arranged and / or directed for the supplying air with a temperature that deviates from the desired temperature, for blowing air to a device for heating or cooling air. The device for heating or cooling air will adjust the temperature of the air with a temperature that deviates from the desired temperature, which further leads to a decrease in the variations of the air temperature in the acclimatized room, and the device for cooling and / or heating the air consumes less energy because it will not process air that has the desired air temperature or has a temperature close to the desired air temperature.
    In yet another embodiment, the housing comprises air temperature adjusting means for adjusting the temperature of the air in the housing. In this way, the air blown out of the housing through the at least one first and / or second outlet opening has the desired temperature or has a temperature close to the desired temperature of the acclimatized space. This is particularly advantageous in relatively large spaces, such as large cargo spaces.
    It may be that a single device for heating and / or cooling the air temperature in the acclimatized space does not have a capacity large enough to keep the air in the acclimatized space at the desired temperature or that the device has such a large capacity that other disadvantages may be present, such as an excessively large building volume or an air temperature near the outlet opening of the heating and / or cooling device, which deviates considerably from the desired air temperature, in order to ensure a desired temperature in the room at a distance from the heating - and / or cooling device. This is particularly true in the case of products having to be stored in a certain temperature range, such as vegetables. If such products have to be stored a few degrees above 0 ° C and the temperature near the outlet opening of the heating and / or cooling device is below 0 ° C, this can lower the quality of the products or even render the products worthless.
    The air temperature adjusting means can be designed in various ways. Reliable and energy-efficient heating means for heating the air comprise a container for a liquid medium and heating means for heating the medium. In the event that it is desired to cool the air in the housing, the temperature adjustment means are designed to cool the air, such as an air conditioner.
    Although it is not excluded that the air with an adjusted air temperature is blown outside the housing through the second or both the first and the second discharge opening or one of the two, the air temperature adjusting device and / or the housing are preferably adapted to moving air at an adjusted temperature from the at least one supply through the at least one elongated first discharge opening to outside the housing to form an air curtain extending substantially in a plane. In this way a relatively large volume of the acclimatized space can be kept at a desired temperature, because air with the desired air temperature or close to the desired temperature is blown through the air curtain into the acclimatized space outside the housing, without the need for a separate device for adjusting the air temperature, which also requires air displacement means and thus consumes relatively much energy.
    The device according to the invention can be designed with different capacities. The air displacement means are preferably adapted to move at least 800 cubic meters per hour, preferably at least 1000 cubic meters per hour and most preferably at least 1200 cubic meters per hour through the at least one first and / or second discharge opening . Such devices can advantageously be used in loading spaces for transport vehicles, such as containers for trucks and ships, whereby a sufficiently good air distribution in the space can be obtained without excessive energy consumption.
    Simple and reliable air displacement from the at least one supply through the at least one first and / or second discharge opening can be obtained in the case where the air displacing means comprise at least one fan.
    To reduce the disturbance of the air flow for forming the air curtain, the at least one first and / or second discharge opening is located at a distance of at least 1.0 meter from the at least one supply. To further reduce the disturbance of the air curtain, the housing is provided with at least two spaced-apart first and / or second feeds. The feeds may be located on the sides of the housing, preferably in a substantially parallel manner or substantially in one line.
    In yet another embodiment, the at least two feeds are located in mutually displaceable wall parts of the housing for adjusting the distance between the feeds. This makes it possible for the device to be set up and to work efficiently in spaces with different dimensions.
    The invention also provides an acclimatized space which is provided with a device according to any one of the preceding claims, wherein the at least one first discharge opening is directed to shielding the access opening of the acclimatized space and wherein the at least one second discharge opening has a directional component parallel to a wall part of the acclimatized room.
    The advantages of the acclimatized space therefore correspond to the above-mentioned advantages with respect to the device for forming an air curtain for shielding the access opening of an acclimatized space according to the invention.
    In one embodiment, the at least one first outlet opening extends substantially along the ceiling of the acclimatized space. This can lead to a significant decrease in temperature variations in the acclimatized room.
    The invention further provides a transport vehicle provided with an acclimatized loading space with an access opening, wherein the acclimatized space is provided with a device for forming an air curtain for shielding the access opening from the acclimatized space according to the invention. The invention can be used advantageously in particular in the case of transport vehicles. The use of the device for forming an air curtain for shielding the access opening of the acclimatized loading space of a transport vehicle leads to a more energy-efficient way of acclimating a loading or cargo space, which leads to a decrease in fuel during operation . The use of fuel is relatively expensive, environmentally unfriendly and leads to a smaller reach of the transport vehicle. The transport vehicle can be a car, truck, train, ship or even an aircraft for transporting products, such as food, or people.
    In a first embodiment, the device is located at a distance from the access opening, which leads to a decrease in the disturbance of the air curtain by external factors, such as wind and solar radiation, whereby the air temperature behind the air curtain is retained in the acclimatized loading space.
    It is advantageous if the device is situated at a distance of at least a fifth and preferably at least a quarter of the height of the access opening. Arranging the device at such distances from the access opening leads to good shielding of the access opening and no or only little disturbance of the air curtain by external factors, while the volume of the cargo space behind the air curtain in the cargo space is limited to a limited extent.
    In a preferred embodiment, the device is arranged at a distance of at least 0.5 meters and preferably at least 0.7 meters from the access opening, which leads to minimal disruption of the air curtain.
    In another embodiment, the acclimatized loading space has a substantially rectangular cross-section, the at least one supply of the device being arranged in an upper corner of the cross-section. Such a location of the device occupies little of the effective volume of the loading space, whereby the loading or loading space can be used as efficiently as possible for products and / or people.
    The invention will now be further elucidated with reference to the following schematic figures, without however being limited thereto.
    Figure 1 shows diagrammatically a perspective view of a device for forming an air curtain for shielding the access opening of an acclimatized space, comprising a housing according to the invention; Figure 2 shows a cross-section of the device from Figure 1 through the lines A-A from Figure 1; and figures 3 and 4 show a transport vehicle with an acclimatized cargo space, provided with a device according to the invention for forming an air curtain for shielding the access opening of the acclimatized cargo space 1.
    With reference to Figure 1, an apparatus 1 for forming an air curtain for shielding the access opening of an acclimatized room is shown (see also Figures 3 and 4). The device comprises a housing 2 provided with two channels 2a, 2b extending in a parallel direction, and a third channel 2c which is connected to the channels 2a, 2b at a first end of the channels 2a, 2b. The third channel 2c extends perpendicularly to the channels 2a, 2b. The channel 2c is made up of two main parts and an intermediate part 2d. The two main parts of the channel 2c are movable in the intermediate part 2d, so that the total length of the channel 2c is adjustable. This makes it possible to adjust the width of the housing 2, so that the housing 2 can be arranged in spaces with different dimensions. At the respective ends of the channel 2c, the housing 2 comprises fixing elements 2e for fixing the housing 2 to wall parts of the space in which the device 1 is to be arranged. At the undersides of the channels 2a, 2b, the channels 2a, 2b of the housing 2 are provided with a supply, respectively 3a, 3b, for supplying air from an acclimatized space to the housing 2. At the undersides of the channel 2c 2d, the channel 2c is provided with an elongated first discharge opening 4, at a distance A of 1 meter from the feeds 3a, 3b. The elongated first discharge opening 4 extends along the length of the channel 2c and has a width of 10 mm. The housing 2 also comprises a first fan (see Fig. 2) for moving air from the inlet 3a, 3b through the at least one elongated first outlet opening 4 to outside the housing 2 for forming an air curtain which extends substantially into extends a plane (see also Figures 3 and 4). At the second ends of the channels 2a, 2b, the channels 2a, 2b are provided with second discharge openings 5a, 5b, which are located at a distance B of 1 meter from the feeds 3a, 3b. Near the second discharge openings 5a, 5b, second fans are located in the channels 2a, 2b (see Fig. 2) for displacing air from the feeds 3a, 3b through the second discharge openings 5a, 5b to outside the housing 2 in a direction perpendicular to the air curtain (see also figures 3 and 4). The elongated first discharge opening 4 is located in a lower wall part of the channel 2c and second discharge openings 5a, 5b are located in a side wall part of the channels 2a, 2b, which wall parts extend in a mutually substantially perpendicular direction. The fans comprise an electric motor (not shown) for driving the blades of the fans, the electric motors being connectable to a source of electrical energy, for example with alternating current or a battery. The electric motors, fans and the housing 2 are adapted to move a total of at least 1200 cubic meters per hour through the first elongated discharge opening 4 and the second discharge openings 5a, 5b.
    With reference to Figure 2, a cross-section of the device 1 of Figure 1 is shown along the lines A-A of Figure 1. During operation, air is sucked from an acclimatized space 20 through the supply 3a to the housing 2 according to the arrows 8. The air flow in the housing 2 is divided into a first part which is sucked to the first elongated discharge opening 4 as a result of the operation of the fan 6, according to the arrows 9, and a second part which is sucked to the second discharge opening 5a as a result of the operation of the fan 7, according to the arrows 11.
    The first part of the air stream is blown out of the housing 2 through the first elongated outlet opening 4, according to the arrows 10, forming an air curtain (see Figure 3). The second part of the air stream is blown out of housing 2 through second exhaust opening 5a, 5b, according to arrows 12, air being distributed in the acclimatized space 20 (see figure 3). Due to the fact that the air is blown outside the housing 2 according to the arrows 12, variations in the air temperature in the acclimatized space 20 have decreased.
    A truck 30 is shown with reference to Figures 3 and 4. The truck 30 is in a relatively hot environment with an air temperature of approximately 28 ° C. The truck 30 is provided with an acclimatized loading or freight space 20, which has a rectangular cross-section with a height H of 2.8 meters and an access opening 21. Freight spaces with heights smaller than or more than 2.8 meters are also common. Products 22 are provided in the acclimatized cargo space 20, which are to be stored at a relatively cold temperature of approximately 8 ° C. At the front 20a of the acclimatized cargo space 20 there is an air conditioning system 23, which cools air from outside the cargo space 20 below 8 ° C and blows the cooled air into the space 20 according to the arrows 13. Consequently, the temperature in the cargo space 20 becomes kept at a preferred air temperature of about 8 ° C. At the ceiling 20a of the acclimatized cargo space 20 and at a distance C of 0.7 meters from the access opening 21, the acclimatized cargo space 20 is provided with a device 1 for forming an air curtain for shielding the access opening 21 from the acclimatized cargo space 20 according to the invention. The air conditioning 23 and the device 1 are connected to the batteries (not shown) of the truck 30 and the truck 30 comprises a control device (not shown), which control device comprises a screen which indicates various parameters, such as air temperature, humidity, etc., on different places in the cargo space 20. To this end, the cargo space 20 comprises various detection means 25 for detecting the temperature, air flow, humidity, which communicate with the control device. The steering device can be used by the driver from the cab 30a of the truck 30.
    During the transport, the access opening 21 is closed by means of doors 24. When the doors 24 are opened, for example for the (partial) loading or unloading of products 22, the outside air which has a relatively high air temperature can enter the cargo space 20. The air curtain according to the arrows 10 prevents the relatively hot air from entering the cargo space 20. Moreover, both during transport and during (partial) loading or unloading of products 22, air is blown out of second discharge openings 5a, 5b of the housing 2 of the device 1, for distributing air in the cargo space 20 according to the arrows 12 This additional air distribution leads to a decrease in temperature variations in the cargo space 20. Consequently, the risk of undesired deterioration of products 22 is reduced and / or an air conditioning system 23 with a smaller capacity can be used, which consequently requires less energy.
    权利要求:
    Claims (22)
    [1]
    An apparatus for forming an air curtain for shielding an access opening from an acclimatized space, comprising a housing, comprising: at least one supply for supplying air from the acclimatized space; and at least one elongated first discharge opening remote from the at least one feed; and air displacement means for moving air from the at least one feed through the at least one elongated first outlet opening to outside the housing to form an air curtain that extends substantially in one plane, the housing further comprising at least one spaced apart from the at least one inlet and second displacement means for displacing air from the at least one inlet through the at least one second outlet opening out of the housing and out of the plane of the air curtain.
    [2]
    Device as claimed in claim 1, characterized in that the at least one second discharge opening and the at least one first discharge opening are mutually spaced.
    [3]
    Device as claimed in claim 1 or 2, characterized in that the at least one second discharge opening is adapted for blowing air out of the housing in a direction substantially perpendicular to the plane of the air curtain.
    [4]
    Device as claimed in claim 3, characterized in that the at least one first and second discharge openings are located in first and second wall parts of the housing, which first and second wall parts extend mutually substantially perpendicularly to each other.
    [5]
    Device as claimed in any of the foregoing claims, characterized in that the air displacing means are located in the at least one supply.
    [6]
    Device as claimed in any of the claims 1-4, characterized in that the housing comprises first air displacement means for displacing air through the first discharge opening and second air displacement means for displacing air through the second discharge opening.
    [7]
    Device as claimed in any of the foregoing claims, characterized in that the housing comprises a first supply connected to the at least one first discharge opening and a second supply connected to the at least one second discharge opening.
    [8]
    Device as claimed in any of the foregoing claims, characterized in that the housing comprises air temperature adjusting means for adjusting the air temperature in the housing.
    [9]
    Device as claimed in claim 8, characterized in that the air temperature adjusting means and / or the housing are adapted to move air from the at least one feed through the at least one elongated first discharge opening to outside the housing to form a air curtain that extends substantially in one plane.
    [10]
    Device as claimed in claim 8 or 9, characterized in that the air temperature adjusting means comprise a container for liquid medium and heating means for heating the liquid medium.
    [11]
    Device as claimed in any of the foregoing claims, characterized in that the air displacing means are adapted to move at least 800 cubic meters per hour, preferably at least 1000 cubic meters per hour and most preferably at least 1200 cubic meters per hour through the at least one first and / or second discharge opening.
    [12]
    Device as claimed in claim 11, characterized in that the air displacement means comprise at least one fan.
    [13]
    Device as claimed in any of the foregoing claims, characterized in that at least one first and / or second discharge opening is situated at a distance of at least 1 meter from the at least one supply.
    [14]
    Device as claimed in any of the foregoing claims, characterized in that the housing is provided with at least two spaced apart first and / or second feeds.
    [15]
    Device according to claim 14, characterized in that at least two feeds are located in mutually displaceable wall parts of the housing for varying the distance between the feeds.
    [16]
    An acclimatized space provided with a device according to any one of the preceding claims, wherein the at least one first discharge opening is directed to shield an access opening from the acclimatized space and wherein the at least second discharge opening has a directional component parallel to a wall part of the housing .
    [17]
    The acclimatized space according to claim 16, characterized in that the at least one first outlet opening extends substantially along the ceiling of the acclimatized space.
    [18]
    Transport vehicle provided with an acclimatized loading space which has an access opening, wherein the acclimatized space is provided with a device for forming an air curtain for shielding an access opening from the acclimatized loading space according to any one of claims 1-15.
    [19]
    Transport vehicle according to claim 18, characterized in that the device is situated at a distance from the access opening.
    [20]
    Transport vehicle according to claim 19, characterized in that the device is situated at a distance from the access opening of at least one fifth and preferably at least one fourth of the height of the access opening.
    [21]
    Transport vehicle according to claim 19 or 20, characterized in that the device is situated at a distance of the access opening of at least 0.5 meters and preferably at least 0.7 meters from the access opening.
    [22]
    Transport vehicle as claimed in any of the claims 18 or 21, characterized in that the acclimatized loading space has a substantially rectangular cross-section, wherein at least one supply of the device is arranged in an upper corner of the cross-section.
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    同族专利:
    公开号 | 公开日
    NL2004589C2|2011-10-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH435344A|1964-09-17|1967-05-15|Staufen Fahrzeugwerke Eislinge|Motor vehicle with a closed box body and cooling unit|
    DE29518108U1|1995-11-15|1996-01-04|Lks Luft Und Klimaservice Chri|Device for ventilation of rooms|
    DE10029543A1|2000-06-15|2002-01-03|Christiani Gmbh|Hot-air curtain appliance for removing humidity in an air stream and protecting spaces from air changes has control devices forming chambers for controlling air streams each moving separately from each other in a piece of equipment.|
    DE202007002883U1|2007-02-28|2007-05-16|Klaar, Ralph|Zones ventilation system for spatial separation of non-smoker and smoker regions, has arrangement of supply air-outlets, through which supply air enters at area in determined part, and exhaust air-outlets discharging exhaust air|
    NL2001326C2|2008-02-27|2009-08-31|J P Systems B V|Air curtain forming device for shielding acclimatized space in e.g. truck, has fans blowing intake air with pressure through output to form air curtain, where fans extend along ceiling of room|
    US20120276832A1|2011-04-29|2012-11-01|H. Opdam Management B.V.|Air Curtain, And A Vehicle Provided With Such An Air Curtain|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2004589|2010-04-21|
    NL2004589A|NL2004589C2|2010-04-21|2010-04-21|Device for forming an air-curtain for screening the entrance of an acclimated space, acclimated space and transport vehicle.|
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