巴西专利BR112014032684B1 system

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专利摘要:
SYSTEM FOR SUPPORTING THE AUTOMATED DRINK SUPPLY PROCESS. Means are provided to support automated beverage supply processes. More particularly, the detection of the presence and the content of exchangeable supply packages (9) in beverage dispensing machines is automated. On-site package detection is provided by the emission of light and measurement of the presence of the light emitted in a light detector (7, 75), the system determines the lack or the correct / incorrect location of the supply packaging. The detection of product availability is provided by the detection of the light intensity that comes through a transparent element in the supply package by another light detector (5; 65; 69), the system identifies the degree of the presence of the product in the packaging. supply.
公开号:BR112014032684B1
申请号:R112014032684-3
申请日:2013-07-01
公开日:2020-10-13
发明作者:Leonardus Cornelis Van Der Velden
申请人:Koninklijke Douwe Egberts B.V；
IPC主号:

专利说明:

FIELD OF THE INVENTION
[001] The invention relates to a system comprising a drink dispensing machine and an exchangeable supply package comprising a dispenser, whose system comprises means for automatically detecting the presence of the exchangeable supply package and the product in the exchangeable supply package .
[002] Beverage service providers distribute their drinks primarily through automatic dispensers in offices, public places and other locations. Such beverage dispensing machines may include coffee machines for making hot drinks or machines for dispensing and selling post mix juice for such products. Increasing the ease of use during operation of these beverage dispensing machines is crucial, not only for the consumer, but also for the supplier. In the supply process, service providers are challenged to minimize human interference and maximize the degree of automation, due to costs, efficiency and failure reduction. The present invention provides a robust, easy to use, fail-safe and cost-effective system for supporting the automated beverage supply process.
[003] Recognition of packaging and supplies in a beverage machine is revealed in several documents such as DE 102008055949 and US 2005/022674. While each of the prior art supply detection devices is reasonably effective, they all require substantial effort with respect to sensors that need to be sensitive and accurate and the electronic systems involved. A drawback of such sensors and electronic systems is that they are relatively expensive and require great attention to detail, not only because they are incorporated into household appliances, but also with regard to the product supply packaging that they have to be compatible with. .
[004] Thus, it is an objective of the present invention to propose an improved system to automatically perform detection of supply, such as detection of packaging positioning (packaging in place) and product availability. In a more general sense, it is an objective of the invention to overcome or mitigate at least one of the disadvantages of the prior art. It is also an objective of the present invention to provide alternative systems that are less problematic in assembly and operation and which in addition can be made relatively inexpensively.
[005] For this purpose, the invention provides a system defined in the appended claims. A supply detection device like this has the benefit of being relatively simple and reliable. The invention additionally provides a reliable and possibly also fail-safe distinction between individual signals generated by the first and second detectors, when a transmitter is used. BACKGROUND OF THE INVENTION Detection and Recognition
[006] The invention automates the detection of the presence and contents of exchangeable supply packages in beverage dispensing machines. The invention can use light detection for the automatic detection of packaging position and product availability. An advantage of this system is that there is no physical contact between the first and second interfaces. System
[007] The invention provides a system comprising a drink dispensing machine and exchangeable supply packs comprising a dispenser, the packs of which are adapted to contain a product to be supplied in the operation of the system. Middle
[008] The invention uses radiation such as light for automatic detection and recognition. More particularly, the invention can include several light sources and detectors in combination with transparent and opaque elements that are part of the dispenser. On-Site Packaging Detection
[009] By emitting light and measuring the presence of light emitted in a light detector, the system determines the absence or correct / incorrect placement of the supply packaging. More particularly, when the light comes unimpeded, the supply package is missing or not properly placed. Product Availability Detection
[0010] By detecting the intensity of light that reaches through transparent elements in the dispenser, the system identifies the degree of presence of the product in the supply packaging. Components for determining the presence of packaging and products
[0011] The device presented for supply detection uses two light detectors. A transparent element of the doser is positioned between a transmitter and the first detector. An opaque element of the doser is positioned between a transmitter and the second detector. This measure provides a fail-safe distinction between individual signals generated by the first and second detectors. Examples of transmitters include infrared (IR) light transmitters or light emitting diodes (LED).
[0012] The invention can be arranged to check whether a signal generated by the first detector is below or above a predefined threshold. It can also be arranged so that when the first detector detects radiation above the predefined threshold in combination with the second detector generating substantially no signal, a period of time after activation is considered to determine whether a positioned packet is empty or full, but not yet open.
[0013] In this way, a complete lack of signal or unexpected levels of at least one of the first and second detectors could be interpreted as a fault condition.
[0014] Division of detection into two sensors allows for a cheap, reliable and simple detection method, as opposed to a single sensor, which needs to be very accurate and is therefore expensive.
[0015] It was also observed that the end of product availability can be physically indicated by the presence of air in the liquid product as it is dispensed. The detection system uses the change in the refractive index between a liquid and air to amplify the presence of air in the fluid as it passes to the pump. Therefore, it is advantageous that the transparent element of the dispenser is an optical element, whereby it is only necessary that an optical element like this can be used to change the direction of the light that falls on that optical element. The optical element can be in any shape or shape that makes use of the difference in the refractive index of fluid and air. The presence of a liquid in the transparent element of the doser causes the light from the transmitter to remain in the liquid and be detected by the first detector. When air is present in the transparent element, the direction of the light is changed. The deflected light is preferably detected by a third detector. Preferably, the first detector is then substantially aligned with the transmitter on a common axis and the third detector is then directed perpendicular to the common axis. Most preferably, the optical element is a prism. Above all, preferably, the prism includes a plurality of facets of the prism (71). The third detector can be a reflection sensor.
[0016] The system uses exchangeable supply packages comprising fluid substances that are used in the preparation of a drink for a user. The fluid substance may include, but is not limited to, coffee extracts, tea extracts, chocolate drinks, milk, flavors, juices, and / or concentrates thereof.
[0017] Examples of exchangeable supply packaging are box-type packaging or rigid containers disclosed in WO 2011/049446. An example of the doser is as disclosed in WO 2011/037464. The entire feeder housing can be used as the second interface. Alternatively, only part of the dispenser includes the second interface.
[0018] In an additional embodiment, the exchangeable supply package can additionally be provided with a removable or perforable seal, which separates the dispenser from the main body of the exchangeable supply package that forms the real fluid container. This seal covers the outlet opening of the actual fluid container, and is automatically enlarged by mechanical drilling or by pulling the removable seal out by fully fitting the dispenser with the machine interface. This self-extending system is revealed in an Internet publication published on April 12, 2011, http://pdfcast.org/pdf/auto-broaching.
[0019] In another embodiment, the dispenser and the exchangeable supply package can be two separate elements through which the dispenser can be connectable in the exchangeable supply package.
[0020] The system of the present invention is described by the use of a supply detection arrangement for an exchangeable supply package comprising a dispenser. However, a beverage dispensing machine may comprise more than one exchangeable supply package. In this way, the system of the present invention can comprise one or more devices for automatically detecting depending on the number of exchangeable supply packs in the system.
[0021] The use of the terms "substantially transparent" and "substantially opaque" should not be construed to limit the present invention. It should be understood that these expressions in the form used here refer to the respective possibilities of visualization, allowing light to be transmitted through, and to effectively block all light. In their broadest sense, these terms mean that the first element is able to let in more radiation than the second element. Another term for transparent can be translucent. Another term for opaque can be reflective. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Detailed aspects and additional advantages of the invention will be explained with reference to the accompanying drawings, in which:
[0023] Figure 1 is a schematic view of a supply detection arrangement according to the invention with a complete and correctly inserted exchangeable supply package comprising a dispenser;
[0024] Figure 2 is a schematic view of a machine interface of the detection arrangement with an exchangeable supply package comprising a dispenser not yet inserted;
[0025] Figure 3 is a schematic view of the machine interface with an exchangeable supply package comprising a dispenser that has not been fully inserted;
[0026] Figure 4 is a schematic view of the machine interface with a complete and correctly inserted exchangeable supply package comprising a dispenser;
[0027] Figure 5 is a schematic view of an insertable exchangeable supply package comprising a dispenser that is empty, or that has been emptied;
[0028] Figure 6 is a schematic view of an additional modality that has a removable seal on the exchangeable supply package, which has not been opened;
[0029] Figure 7 shows schematic detector readings over time for detection of packaging in place (PIP) and detection of product availability (PAD)
[0030] Figure 8 shows a side view of an alternative embodiment of the present invention;
[0031] Figure 9 is the perspective view of the embodiment of figure 8;
[0032] Figure 10 is a supply detection arrangement according to the invention;
[0033] Figure 11 is an exploded view showing the primary components in an alternative form of a doser for a system according to the invention;
[0034] Figure 12 shows the dispenser assembled in figure 11 with an optical detection arrangement that is part of a beverage dispensing apparatus;
[0035] Figure 13 is a schematic representation of an air prism operation (A), with water (B), and a detailed view of a stepped prism design (C);
[0036] Figure 14 is a general arrangement for the optical system of figure 12, seen from above;
[0037] Figure 15 is a detailed cross-sectional view, on an enlarged scale, of a flow diverter;
[0038] Figure 16 shows the dispenser without supply packaging inserted in its initial position with respect to a part of a beverage dispensing apparatus that carries the optical sensor arrangement;
[0039] Figure 17 is a partial detailed perspective view showing the detection flap for detection of packaging approach;
[0040] Figure 18 is a partial cross section of a gear pinion about to fit a drive axis of the beverage apparatus; and
[0041] Figure 19 shows schematically the doser lowering in the position at greater (A) and smaller (B) approach distances. DETAILED DESCRIPTION OF THE INVENTION
[0042] A preferred embodiment of the present invention uses dual detection of a beam of light, such as an Infra Red (IR) beam, irradiated by a single transmitter, to detect product positioning and product availability. It is expressly implied that transmitters and sensors in other frequency ranges of the spectrum can also be used.
[0043] As shown in figure 1, a suitable detection device can be an IR 1 detection array with a single IR 3 transmitter and first and second detectors 5, 7, instead of just one, as in conventional systems. The first detector 5 together with the IR transmitter 3 to detect product availability is proven technology and has been used in detection systems before. A second detector 7 is used to detect whether an exchangeable supply package 9 comprising a dispenser 11 is in place. The detection arrangement 1 is part of a system that includes a beverage dispensing machine (not shown, but conventional) and at least one exchangeable supply package comprising the dispenser 11. Such machines comprise at least one first interface or machine interface 13 to receive at least one exchangeable supply package 9 in at least one position. The dispenser 11 comprises a fluid connector and a dosing mechanism, such as a pump (not shown), and acts as a second interface or interface of the package.
[0044] With the arrangement according to figure 1, detections are possible, as discussed with reference to figures 2 to 6. In figure 2 and subsequent figures 3 to 6, arrows represented in the transmitter 3 and in the first and second detectors 5, 7 will schematically indicate the activity of the transmitter or the respective detector.
[0045] In figure 2, a situation is shown that a full exchangeable supply package 9 comprising a doser 11 has not yet been received between the transmitter 3 and the first and second detectors 5 and 7. Each of the first and second detectors is now exposed the clear radiation from the transmitter 3. This is characteristic for a situation where no packaging is present. The dispenser 11 acts as a second interface or interface of the package to cooperate with the first interface, or machine interface 13.
[0046] In figure 3, a full exchangeable supply package 9 is shown, whereby the dispenser 11 of the supply package 9 is partially inserted between the transmitter 3 and the first detector 5. The dispenser 11 has an upper part HA which is substantially transparent. The dispenser 11 additionally has a lower part 11B. The lower portion 11B of the dispenser 11 is substantially opaque. When the first detector 5, shown in figure 3, does not detect any radiation from the transmitter and when at the same time the second detector 7 detects the clear radiation from the transmitter 3, then it can be determined that the package 9 is not correctly inserted.
[0047] In figure 4, it is shown that the full package 9 is properly inserted, with the upper part HA facing the first detector 5 and the lower part 11B facing the second detector 7. In this case, the package 9 is full and so filled with a liquid product. In this case, the upper part 11A is filled with the liquid contents of the package 9. Light emitted by the transmitter 3 is detected by the first detector 5 through the substantially transparent upper part HA and the translucency of the liquid. This results in a signal generated by the first detector that is below a typical level for liquid detection (product availability). The second detector 7 does not receive radiation from the transmitter 3, because of the opacity of the lower part 11B of the doser 11. This can be interpreted as a full package properly inserted.
[0048] In figure 5, the same situation as in figure 4 is shown, except that here the packaging 9 reached an empty state. Here, the partially translucent liquid product reached below the level of the first detector 5, which now receives radiation from transmitter 3 which is only obstructed by the transparent outer wall of the upper part 11 A. This results in the generation of a different signal by the first detector 5 which is above a predefined threshold, typical for an empty 11A top.
[0049] In a variation shown in figure 6, the package 9 is additionally provided with a removable or perforable seal 15, which separates the upper part 11A from the main body of the package 9 that forms the real fluid container. This seal 15 covers the outlet opening of the actual fluid container, and is automatically enlarged by mechanically perforating or pushing the removable seal 15 out by fully engaging the dispenser 11 with the machine interface 13. As shown in figure 6, removal the seal 15 was not properly made and no liquid consequently entered the upper part 11 A. This results in a combined reading of the first and second detectors 5 and 7 which differs from the situation in figure 4 and consequently an unsuccessful enlargement of the package 9 can be detected. Basically, the combined reading of the first and second detectors 5 and 7 is the same as in the case of an emptied package (Figure 5), but the non-extended diagnosis may be related to the insertion action of the directly anterior package having resulted in several changes detector readings.
[0050] The available detector readings are shown in Table 1. Table 1:

[0051] As shown in Table 1, double conditions exist. To differentiate these conditions, it is also possible to make use of the interaction with an open door or bottom of a machine packaging compartment. It is thus possible with a door like this closed or with the machine starting when this detector reading occurs to give the 'not extended' condition a higher priority. It is also possible to activate the machine to try again to enlarge the packaging seal, even when it has already been enlarged at an earlier stage. When, for example, after two seconds, no fluid enters the dosing environment of the upper part 11 A, a valid conclusion is generated that the package 9 is empty.
[0052] Alternatively, the diagnosis of non-enlarged and empty packaging can also be related to a period of time that elapsed after the device was last switched on.
[0053] Placing the signals of the first and second detectors 5 and 7 in a graph as a function of time, it can be determined whether a package is being placed or removed. This is shown in figure 7, where schematic readings of the detector over time are shown for packaging in place detection (PIP) and product availability detection (PAD) and the resulting diagnosis.
[0054] An additional requirement is to perform the detection of product and / or packaging availability in the previously explained places for incorrectly displaced packaging in a safe manner. In order to make the detection fail-proof, the valid detection range is between 0% and 100%, which are typical failure modes of these types of detectors. A proper test routine can be provided by disconnecting the sensors or transmitter. In order to create a fail-proof path in this one, it is additionally proposed that the dispenser does not block 100% light to detect the presence of packaging, but, by way of example only, 70%. When 100% blocking is detected, then something else probably occurred, such as a detector or transmitter being defective. Examples are given in Table 2, which also includes typical failure modes for detectors. Table 2:

[0055] It is apparent that, when in failure mode, a transmitter is no longer transmitting light or a sensor is no longer detecting light, this is detectable in the system when the optical damping of the dosage of the packaging presence part is, for example, 60 to 70%, instead of 100%.
[0056] Figures 8 and 9 show an alternative modality in side and perspective view. This modality is a doser according to the principles revealed in WO 2011/0377464. The two required elements are positioned beyond the inlet and outlet of the doser which comprises a fluid connector and a dosing mechanism, such as a pump (not shown). The dispenser 11 has an upper part 11A which is substantially transparent, and which is filled with the liquid contents of the package 9 (not shown). The dispenser 11 additionally has a bottom part 11B. The lower portion 11B of the dispenser 11 is substantially opaque. Figure 9 shows the nozzle 17 for connecting the dispenser 11 in the exchangeable supply package. Figure 10 shows a supply detection arrangement 1 according to the invention in which the dispenser according to figures 8 and 9 is adapted. It clearly shows transmitter 3 and the first and second detectors 5, 7.
[0057] An alternative dispenser 31 is shown in figure 11. A first substantially transparent element 49 can be seen standing out on the right side of the dispenser 31. A stepped / serrated feature 51 provides the optical element of the system, as will be explained below . The doser additionally includes a lower housing 39, a pump housing 41 and an upper cover 43. The lower housing 39 is the main housing of the metering pump 31. A pump accommodated in the pump housing 41 is a gear pump with a pair of mutually engaged gear pinions 45, 47. One of the gear pinions 45, 47 of the pair is arranged to engage on a drive shaft of a beverage dispensing machine.
[0058] Pump housing 41 provides the gear pump body and both inlet and outlet holes for the pump. In the specific embodiment, as described here, an extension 55 in the fluid flow path 53 can be seen on the right side of the pump housing 41. This extension 55 functions as a flow diverter. This flow diverter 55 ensures that product extracted to the pump passes through the first substantially transparent element, in the present figure, sample chamber 49 and, consequently, through the field of view of an optical system to be described below. It must be understood, however, that the flow diverter is an optional element, not essential for the operation of the optical system.
[0059] The upper cover 43 is mounted in the lower housing 39. The upper cover 43 is used for attaching the dispenser 31 in an exchangeable supply package (not shown, but conventional).
[0060] Figure 12 shows the dispenser 31 of figure 11 in the assembled condition and in position with respect to a detection arrangement. The end of product availability (presence of liquid), in the alternative mode of dispenser 31, is physically indicated by the presence of air in the liquid product as it is dispensed. The detection system uses the change in the refractive index between a liquid and air to amplify the presence of air in the fluid as it passes to the pump. An example of this optical effect is shown schematically in figure 13.
[0061] Light from an external light source 57 is directed to a prism 59 that forms a part of the sample chamber 49. Here, the prism 59 acts as an optical element, which can be an element in any shape or form it does use of the difference in the refractive indexes of fluids and air. It is only required that an optical element like this can be used to change the direction of light that falls on this optical element. Light from light source 57 passes through an outer wall 61, but is reflected in an inner wall 63 when air is in the sample chamber 49 (see figure 13A). The reflected light then leaves the prism 59 where it is detected by a third detector, for example, a reflection sensor 65.
[0062] The presence of a liquid in the sample chamber 49 (see figure 13B) changes the refractive index on the inner wall 63, causing the light to remain in the liquid, instead of being reflected. Light emerging from a wall of the distant chamber 67 is detected by a first detector, for example, transmission sensor 69.
[0063] To reduce cost and improve manufacturability, the solid prism 59 of the schematic figure 13 (A and B) is replaced by a series of minor facets of the prism 71 shown in figure 13C. In the described embodiment, the facets of the prism 71 form the stepped serrated feature 51 on an exterior of the inner wall 63 of the sample chamber 49. In other conceivable examples, the entire dispenser housing can be used as the sample chamber and the facets of the sample chamber. prism could be incorporated into the side wall of the housing.
[0064] The facets of the prism 71 act to amplify the presence of air in the sample chamber by switching light towards the reflection sensor 65 when air is present for the inner wall 63. An additional method of improving detection is the monitoring of the various sensors during a pumping cycle. Typically, such internal reflection sensors 65 could be used as a static device in which the presence of air is only tested before or after the dispensing cycle.
[0065] The viscous and inhomogeneous nature of some liquids, especially liquid coffees, makes an approach like this problematic. By monitoring the transmission and reflection sensors 65, 69 while the pump is running, it is possible to detect air bubbles trapped in the liquid. By the careful design of the dispenser 31, it is possible to guarantee that the trapped bubbles pass through the sensors' field of view. An additional design consideration is to ensure that the bubbles are forced into contact with the inner wall 63 of each facet of the prism 71. This both improves detection and acts to clean the inner surfaces of the product buildup.
[0066] In the schematic example described above, with reference to figure 13 (A and B), a solid triangular prism 59 is used as the optical element in the system. The angle of the inner wall 63 is chosen according to the different refractive indices of air and liquid to be measured. The angle is determined by optical analysis. In ideal conditions with air in the sample chamber 49, all light is reflected in the reflection sensor 65 placed at 90 degrees with the incident light. Testing with various molding techniques has shown that optical performance is relatively unaffected by the drop in surface resources. The detection technique could therefore also use a solid prism. Figure 13C shows the stepped prism design, using the plurality of facets 71. In practice, it is preferred that a low volume of plastic is used. The solid prism 59 was implemented using a series of smaller triangular facets 71. These facets 71 form a stepped feature 51, shown in figure 13C. Again, the angle of the face or inner wall 63 is optimized through analysis. The size of the steps is a function of the exit angle of the light transmitting source 57 and the entry angle of the reflection sensor 65. The steps of facet 71 are typically 90 degrees (but can be optimized if required). The surface finish should be flat and smooth to prevent surface dispersion / deformation. Analysis has shown that a certain tap on either or both surfaces does not have a significant impact on its performance. The design is reasonably tolerant of variations due to manufacturing tolerances.
[0067] In the present mode, flow diverter 55 is optionally employed to ensure correct operation in which the product has to pass in front of the detection system as it is pumped. Flow diverter 55 has been added to the flow path 53 of the pump to ensure that product is drawn through the sample chamber area 49. Flow diverter 55 does not interfere with the size of the inlet opening of the existing pump. A side view of the flow diverter is shown in figure 15. The flow diverter 55 offers several advantages, in which: it directs the product flow and, in particular, air bubbles, in front of the reflection sensor 65; it is dimensioned on an axis to ensure that air bubbles will touch the inner wall 63 of the facets of the prism 71; it does not interfere with the sensor's field of view because it allows light to be conducted directly through clear plastic from flow diverter 55 to transmission sensor 69, thus reducing the signal-to-noise ratio of the system; and / or it is designed in shape and positioning to achieve the exposed and provide a “washing” action against the inside of the prism facet, guiding the fluid in contact with it.
[0068] The dispenser 31, as previously stated, forms part of an exchangeable supply package designed as a bag in a consumable box. The packaging is placed in the coffee machine / dispenser where the optical detection system is located. The dispenser 31 is shown in figure 16 fitted with an interface part 73 of a dispensing apparatus. Hereby, the dispenser 31 acts as a packaging interface. Locating handles and other mechanisms are not shown to simplify figure 16. The optical components are located at the dispenser interface part 73 around a cavity 74 housing the sample chamber 49 with its facets of the prism 71. Looking to the right in figure 16B, the light source 57 is located to the right of the facets of the prism 71, as will be understood in combination with figures 12 and 14. The reflection sensor 65 is located directly above the facets of the prism 71 (as illustrated in the figure 16B), while the transmission sensor 69 is located to the left of the facets of the prism 71.
[0069] An additional function of the optical system is to confirm that the exchangeable supply package has been properly loaded in the dispensing device. In this regard, a separate package in place (PIP) sensor 75 is located below the transmission sensor 69 on the left of the facets of prism 71, as shown in figure 12.
[0070] The dispensing device thus includes the detection system shown in figure 12 and contains several advantageous features, as will be described below. The light transmitting source 57 for the detection system can be a light emitting diode (LED). To provide maximum product penetration, an infrared LED (wavelength -880 nm) is preferred. The system however will also work at other wavelengths and has also been successfully tested at 650 nm. Generally, a light emitting diode (LED) with a wavelength in the range of 500 nm to 950 nm, preferably in the range of 650 nm to 880 nm is suitable.
[0071] The preferred wavelength depends on the spectral absorbance characteristics of the product. For the most commonly used transmission-only systems (shining through the product), the wavelength will be adjusted so that maximum attenuation is achieved when the product is present. As noted earlier, product build-up on the side walls can be problematic in this approach.
[0072] For the proposed detection system, the wavelength is chosen so that maximum transmission can be achieved. This allows light entering the sample chamber 49 to penetrate any film present which may obscure a void of air left. An additional advantage of an infrared light source is that it is not easily detected by a consumer during packaging replacement.
[0073] A second aspect of the LED transmission is its output beam angle. Illumination of the side wall of the sample chamber 49 with a wide-angle light source will result in light propagation into and around the clear plastic side walls of the dosing assembly 31. This light may come out of the side walls in various parts of the doser in an uncontrolled way and can make its way to the sensors in a very uncontrolled way. The result is that the sensors see some form of signal when in fact none should be present (reduced signal-to-noise ratio). To address this problem, the LED exit angle should be as narrow as possible and preferably around + / 3 degrees (full power beam width 6 degrees). Increasing the exit angle will likely result in reduced performance because of uncontrolled light scattering.
[0074] When air is present against the inner wall 63 of the facets of prism 71, internal reflection will occur resulting in light from the LED light source 57 rotating 90 degrees towards the reflection sensor 65. Where a product film is present between the air and the side wall, reflection will occur in the film / air limit. Although some attenuation and dispersion occurs, this performance of the system's film / air interface is still sufficient to provide a reliable indication that air bubbles are passing through the system. The spacing between the inner wall 63 and the diverter 55 is critical to ensure that the air bubble puts sufficient force against the side wall to ensure that the product film is optically thin.
[0075] Figure 14 is a detailed view of the optical system. The reflection sensor 65 is chosen to match the wavelength of the LED light source 57. The detection angle must be reasonably wide to allow integration of the signal coming from the internal surface of the prism 63. The receiving angle however should not be so large as to allow spurious light to be collected from other parts of the dispenser 31. An acceptance angle of 16 to 24 degrees (corresponding to: +/- 8 to +/- 12 degrees half power) is recommended. For optimal system performance, the LED light source 57, reflection and transmission sensors 65, 69 should be aligned in the same horizontal plane. The reflection sensor must be located at 90 degrees with the LED axis (Figure 12). The exact location of the sensor in the horizontal plane must be optimized. Transmission sensor 69 collects all light that passes through sample chamber 49 when fluid product is present. The parameters for the transmission sensor 69 are similar to those of the reflection sensor 65 with regard to the wavelength and angle of acceptance. Again, for optimal performance, transmission sensor 69 must be located on the same axis as the LED light source 57.
[0076] Simultaneous detection of both a reflection and transmission allows a more detailed assessment of the product to be made. For example, relatively transparent products, such as a thick thick liquid, will predominantly be detected by the transmission sensor 69. Products such as milk, with high opacity and dispersion properties, will also show a certain signal on the reflection sensor 65. These variations in characteristics (both in dynamic and static state) makes it possible to discern the product contained in the exchangeable supply packaging. This, in turn, can allow the consumer to place the package in any position in a multi-package dispenser, which accepts a plurality of exchangeable supply packages. The dispenser can then certify the type of product that the optical signals presented.
[0077] Without dispenser 31 present in the dispensing apparatus, that is, in its part of the interface 73, the transmission sensor 69 will detect the output of the LED light source 57 directly while the reflection sensor 65 will receive absolutely no signal. This sensor reading can be used by self-calibration software to look for changes at the maximum signal level, where a change can represent possible contamination of the system.
[0078] The presence of an empty feeder 31 will cause the reflection sensor 65 to receive a maximum signal level and the transmission sensor 69 a minimum signal. Again, a self-calibration can be performed at this point. This condition can also be used to initiate a priming sequence for the pump.
[0079] Where a used package is placed on the machine, one or both of the reflection and transmission sensors 65, 69 will receive a reduced signal level. In this case, a pump priming sequence does not need to be started.
[0080] Dynamic measurement is another feature of the detection system in cooperation with the dispenser 31. Known fluid product availability sensor systems use a static measurement system. An example is a sensor floating in a fluid tank. In such systems, the sensor allows the pump to operate as long as sufficient fluid is available to keep the float switch closed. The nature of the fluid product used in the exchangeable supply packaging related to the invention avoids simple static detection system. Between dosing cycles (which can be days) a thick film of product can accumulate on the side walls of the sample chamber 49. This thick accumulation can obscure the transmission detector 69, resulting in a false indication of product availability. The dynamic system developed using prism 59 (ie, facets of prism 71) and flow diverter 55 is basically based on the detection of air bubbles trapped in the product. These bubbles that pass through the sensor system are swept upwards against the inner wall 63 of the facets of the prism 71 resulting in short pulses of light refracting towards the reflection sensor 65. These pulses are easily detected during a pumping cycle.
[0081] A dynamic measurement algorithm examines the sensor system during the pump cycle and estimates the percentage of the pump cycle that contains air. An adjustable threshold determines when an unacceptable amount of air is passing through the system. At this point, the product is flagged as no longer available (end of package). An additional feature of the dispenser 31 is a second substantially opaque element 77 for stirring and detecting PIP (Figure 17). As the package is placed in the dispenser, a corrugated drive shaft 79 of the dispenser pump drive must engage pinion 45 of the dispenser pump mechanism 31 (Figure 18). A problem can be defined in that a driven element, such as pinion 45 of the gear pump, has to be pressed to fit with the fluted shaft 79 that will be driving pinion 45. Both drive shaft 79 and pinion 45 have a moderate friction coefficient. When the flutes 81 of the corrugated shaft 79 are not in line with conjugate formations 83 on pinion 45, a solution is needed to align both without damaging the flutes 81 or conjugated formations 83 from anywhere. This fitting is facilitated if the drive shaft 79 is swinging back and forth around +/- 40 degrees, according to the arrows 85, 87 indicated in figure 18. According to a proposed solution, the PIP 75 sensor it detects when pinion 45 is approaching drive shaft 79 and, when this is the case, drive shaft 79 is agitated slightly to a new degree. This lasts a second after the PIP sensor 75 detects the presence of pinion 45 by means of the second substantially opaque element, in this figure, the detection tab 77 (Figure 17). The solution chosen to simplify the fit between drive and driven elements 79, 45 is effective without human attention. Figure 17 shows the detection tab 77 for approaching the drive shaft and initiating “agitation”. To assist in the early detection of the dispenser 31 approaching the fluted drive shaft 79 of the apparatus, the detection flap 77 is positioned at the base of the sample chamber 49. The flap 77 is sized and located to ensure that the light from the LED light 57 for transmission sensor 69 is obscured during lowering before the fluted drive shaft 79 engages pinion 45 of the dispenser 31. Flap 77 is used by the PIP sensor 75 to detect packaging approach. As the package is placed in the dispenser, the drive flutes 81 of the drive shaft of the dispenser 79 must fit the pump pinion 45 of the dispenser 31. This fit is more easily achieved if the drive shaft 79 is rotated to back and forth a few degrees as the dispenser 31 engages the relevant flutes 81. This oscillating rotation is referred to earlier as "stirring".
[0082] An additional aspect of the LED light source 57 and transmission sensor 69 is that they must be located to allow them to detect the base of the doser sample chamber 49 before the fluted shaft 79 engages the pump mechanism. This detection initiates the stirring action. Flap 77 is opaque or treated to opaque and is added to the base of the sample chamber 49 to ensure that the transmission sensor 69 detects the housing at the correct point in the lowering cycle.
[0083] The fit between the fluted shaft 79 and the feeder housing 39 is shown in figures 18 and 19. The shaft 79 meets the surface of the feeder base when the feeder 31 is at a first distance (in this example) 8,8 mm above its initial position. The flutes 81 on shaft 79 only fit pinion 45 at a second distance, the last (in this example) representing 3.9 mm of a lowering cycle. The agitation must start between the first and the second distance. The fitting sequence is described in more detail below.
[0084] Figure 18 illustrates the fluted fitting of the pump pinion 45 of the dispenser 31, while the detection of packaging in the subsequent place is shown in figure 19. As a final check on the readiness of the system, the additional PIP sensor 75 is placed below transmission sensor 69. This sensor is activated when the dispenser 31 is in the fully loaded start position. The PIP 75 sensor is located so that sufficient light from the LED light source 57 is detected when the package is not in place. When properly located, the tab 77 at the base of the sample chamber 49 will obscure the PIP 75 sensor, thus providing an indication that the package is fully loaded and can be operated (see also Figure 17).
[0085] As previously noted, transmission sensor 69 and LED light source 57 must be on the same axis. To allow enough light to reach the PIP 75 sensor, and to ensure that it is activated in the correct position, it may be necessary to move the transmission sensor 69 slightly off-axis. In this case, great care must be taken to ensure that the performance of the product availability detection system (PAD) is not compromised. Optical ray tracing followed by testing is recommended to ensure that the system retains the desired PAD performance.
[0086] The sequence of lowering the package with its dispenser 31 which is used to trigger the shaking action and indicate that the package is in place is shown in figures 17-19. At a third distance (in this example) 10 mm above from the starting position, light for the transmission sensor 69 is already being blocked by flap 77 in the sample chamber 49. As noted earlier, axis 79 is yet to meet housing 39 at this point. In figure 19, the dispenser 31 is shown lowering in position at the third distance of 10 mm (Figure 19A) and at a fourth distance (in this example) of 5 mm (Figure 19B). At about 5 mm, transmission sensor 69 is completely obscured, but still well ahead of the second 3.8 mm distance from the drive shaft socket with gear pinion 45. The PIP 75 sensor is now also starting to become obscured at this point. At a fifth distance (in this example) of 2.5 mm the PIP 75 sensor was completely obscured. The loading handle (not shown, but conventional) can conveniently have a spring loaded "over the center" operation and will thus help to drive the dispenser 31 to its initial fully lowered position.
[0087] Although in the examples described here the various detectors have been represented as sensors, it is within the understanding of those skilled in the art that such detectors could be assemblies including lenses, light guides, optical and / or electronic filters, etc. As will also be clear to those skilled in the art, automatic detection is not related to the specific gear pump for dosing fluid and other dosage forms can be combined with the detection system of the invention.
[0088] In this way, means have been described that are provided to support the automated beverage supply process. More particularly, the detection of the presence and the contents of exchangeable supply packages (9) in beverage dispensing machines is hereby automated. A packaging detection in place is provided by emitting light and measuring the presence of the light emitted in a light detector (7, 75), the system determines the absence or correct / incorrect placement of the supply packaging. A product availability detection is provided by detecting the light intensity from a transparent element in the supply package by another light detector (5; 65, 69), the system identifies the degree of product presence in the supply package.
[0089] It is believed that the operation and construction of the present invention will be apparent from the description presented and attached drawings. It will be clear to those skilled in the art that the invention is not limited to any modality described herein and that modifications are possible, which must be considered within the scope of the appended claims. Also, kinematic inversions are considered to be inherently revealed and within the scope of the invention. In the claims, any reference sign should not be construed as limiting the claim. The terms "comprising" and "including", when used in this description or in the appended claims, should not be interpreted in an exclusive or exhaustive sense, but rather in an inclusive sense. Thus, the term "comprising" in the form used herein does not exclude the presence of other elements or steps, in addition to those listed in any claim. In addition, the words "one" and "one" should not be interpreted limited to "only one", but are used instead to mean "at least one", and do not exclude a plurality. Features that are not specifically or explicitly described or claimed may be additionally included in the structure of the invention within its scope. Expressions such as: "means for ..." should be read as: "component configured for ..." or "element built for ..." and should be interpreted to include equivalents for the revealed structures. expressions such as: "critical", "preferred", "especially preferred", etc. are not intended to limit the invention. Additions, deletions and modifications within the field of expertise of those skilled in the art can generally be made without departing from the spirit and scope of invention, determined by the claims.

权利要求:
Claims (25)
[0001]
1. System to support the automated beverage supply process, comprising a beverage dispensing machine and at least one exchangeable supply package (9) comprising a dispenser (11; 31) and a product to be supplied in the operation of the system, the system comprising one or more detection means for at least automatic detection of the product in the exchangeable supply package, the detection means comprising: a first interface (13; 73) for incorporation into a machine; a second interface (11; 31) in the exchangeable supply package dispenser, operably connectable to the first interface; a transmitter (3; 57) at the first interface to emit radiation; and, a first detector (5; 69) at the first interface to detect the presence of product in the exchangeable supply package, characterized by the fact that the presence of the exchangeable supply package can be automatically detected by the system additionally comprising: a second detector (7; 75 ) at the first interface to detect the presence of exchangeable supply packaging; wherein the second interface (11; 31) is receivable between the transmitter (3; 57) and both the first and second detectors (5, 7; 69, 75) to interfere with radiation emitted by the transmitter (3; 57), the second interface (11; 31) comprising: a first transparent element (11 A; 49) that in use is positioned between the transmitter (3; 57) and the first detector (5; 69); and, a second opaque element (11B; 77) that in use is positioned between the transmitter (3; 57) and the second detector (7; 75).
[0002]
2. System according to claim 1, characterized by the fact that the transmitter is an infrared (IR) light transmitter.
[0003]
3. System according to claim 1, characterized by the fact that the transmitter is a light emitting diode (LED).
[0004]
System according to any one of claims 1 to 3, characterized by the fact that the dispenser has an upper part (11 A; 49) that is transparent and adapted to be filled with the product to be supplied and a lower part ( 11B; 77) which is opaque.
[0005]
System according to any one of claims 1 to 4, characterized in that it is arranged to verify that the signal generated by the first detector (5; 69) is lower or higher than the predefined threshold.
[0006]
6. System according to claim 5, characterized by the fact that when the first detector (5; 69) detects radiation above the pre-defined limit in combination with the second detector (7; 75) generating no signal, a period of time lapse after activation is considered to determine whether the positioned packaging is full or empty, but not yet opened.
[0007]
System according to any one of claims 1 to 6, characterized by the fact that a complete lack of signal from at least one of the first and the second detectors (5; 7; 69; 75) is interpreted as a fault condition.
[0008]
System according to any one of claims 1 to 7, characterized in that the first interface is a machine interface and the second interface is a packaging interface.
[0009]
System according to any one of claims 1 to 8, characterized in that the first transparent element (49) includes an optical element (59).
[0010]
10. System according to claim 9, characterized by the fact that the optical element (59) is a prism.
[0011]
System according to claim 10, characterized in that the prism (59) includes a plurality of prism facets (71).
[0012]
System according to any one of claims 1 to 11, characterized in that the machine interface (73) additionally includes a third detector (65)
[0013]
System according to any one of claims 1 to 12, characterized in that the first detector (5; 69) is aligned with the transmitter (3; 57) on a common geometric axis.
[0014]
System according to either of claims 12 or 13, characterized in that the third detector (65) is directed perpendicular to the common geometric axis, and the optical element (59) is adapted to be aligned with both first detector ( 69) and third detector (65).
[0015]
System according to any one of claims 12 to 14, characterized in that the third detector is a reflection sensor.
[0016]
System according to any one of claims 1 to 15, characterized in that the first transparent element is a sample chamber (49) and a flow diverter (55) is arranged within a sample chamber (49) where the flow diverter (55) is made of a transparent material, so that it does not block incidental light emitted by the transmitter (57).
[0017]
System according to any one of claims 1 to 16, characterized in that the second opaque element is an opaque flap (77) extending from the bottom of the sample chamber (49), positioned and located to ensure that during the placement of the exchangeable supply package, the radiation from the transmitter (57) is first obscured by the opaque flap (77), before the transparent sample chamber (49) becomes aligned with the common geometric axis.
[0018]
18. System according to any one of claims 1 to 17, characterized in that the feeder (31) includes a pump having a driven pump pinion (45) and in which the machine interface (73) has a drive shaft to drive the pump pinion (45).
[0019]
19. System according to claim 17, characterized in that the doser (31) includes a pump having a driven pump pinion (45), in which the machine interface (73) has a drive shaft (79) to drive the pump pinion (45), and in which the detection of the flap (77) initiates a rotation movement back and forth of the drive shaft (79), to assist the engagement of the pump pinion (45) with the drive shaft (79).
[0020]
20. System according to any one of claims 1 to 19, characterized by the fact that in use with an exchangeable supply package properly connected to the beverage dispensing machine, the presence of product in the exchangeable supply package is dynamically detected during the cycle dosing of the product from the food packaging to the beverage dispensing machine.
[0021]
21. System according to claim 20, characterized by the fact that a dynamic measurement algorithm is arranged to estimate the amount of air bubbles in the fluid product during the dosing cycle and to decide, based on this estimate, whether the packaging of supply reached the end of its content.
[0022]
22. System according to any one of claims 1 to 21, characterized in that the transmitter is a light-emitting diode (LED) with a wavelength in the range of 500 nm to 950 nm, preferably 650 nm to 880 nm.
[0023]
23. System according to claim 22, characterized by the fact that the transmitter has an exit angle of 3 degrees.
[0024]
24. System according to any one of claims 1 to 23, characterized in that the first detector (69) has a reception angle in a range of 16 to 24 degrees.
[0025]
25. System according to claim 15, characterized by the fact that the third detector (65) is a reflection sensor and has a reception angle in a range of 16 to 24 degrees.

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法律状态:
2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2019-12-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2020-09-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2020-10-13| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 01/07/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

NL2009092|2012-06-29|

PCT/NL2013/050477|WO2014003570A2|2012-06-29|2013-07-01|System for automated detection in beverage dispensing machines|

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