CA2154384A1 - Vessel for preparation or cooking of e.g. food-stuff and beverages by heating, and an information carrier for use with such vessels - Google Patents
Vessel for preparation or cooking of e.g. food-stuff and beverages by heating, and an information carrier for use with such vesselsInfo
- Publication number
- CA2154384A1 CA2154384A1 CA 2154384 CA2154384A CA2154384A1 CA 2154384 A1 CA2154384 A1 CA 2154384A1 CA 2154384 CA2154384 CA 2154384 CA 2154384 A CA2154384 A CA 2154384A CA 2154384 A1 CA2154384 A1 CA 2154384A1
- Authority
- CA
- Canada
- Prior art keywords
- vessel
- temperature
- color
- oven
- information carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Landscapes
- Cookers (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
A method for controlling av heating procedure in an oven by using an optically readable information carrier with or on lthe heating object. The oven may be prodided with an optical reading device for touchless reading of the information carrier before and/or during the reading.
By providing the information carrier with one or more fieds that exhibit color shift at temperatures at will, a feed-back control of the procedure is made possible with simple technical solutions.
By providing the information carrier with one or more fieds that exhibit color shift at temperatures at will, a feed-back control of the procedure is made possible with simple technical solutions.
Description
215g384 A vessel for preparation or roo~i ng of e.g. food-stuff and beverage~ by heating, and an information carrier for use with such vessel~
The present invention relates to a vessel, particularly to a vessel having walls of a material which permits heating of the content of the vesssel by radiation, in particular micro-wave radiation.
Such vessels, and the term vessel is used here to include also packages and containers of different kinds which normally, at least partially, have walls of material which depends on the actual kind of heating. If the heating takes place by heat radiation of the type infrared heat radiation from e.g. a cooking plate, the material may be metal, at least in the bottom. If the heating takes place by means of the nowadays very common heating type using micro-vawes, then the material may be cardboard or plastics or the like. Below, to facilitate, such vessels, along with the instant content in each case, will sometimes be referred to as "object".
Common to all types of heating is the problem of accurately controlling the temperature, e.g. to prevent that the temperature is insufficient for the application in question or to prevent that the vessel as used bursts up and starts leaking due to too a high internal pressure within the vessel, which may happen if the temperature has unintentionally become too high.
The object of the present invention has been to provide a vessel wherein this problem has been remedied, and, in accordance therewith to provide an information carrier for use with such vessels.
According to the invention this object has been achieved in that the vessel is provided with an information carrier having one or more optically readable control information fields which information carrier is adapted to be used in order to indicate the temperature of the object as the object is heated in an oven. Here, it is conceivable, for instance, to watch visually how the ~154~84 information carrier shifts color as the desired temperature has been reached, so that the heating procedure may be stopped then.
However, the information carrier is preferably adapted to cooperate with an optical reading device of the oven and a control device to control the heating procedure at least partially in dependence of the read temperature - information.
According to the invention it is preferred that the information carrier is arranged directly on the heating object, e.g. as a disposable label or, alternatively, as a device for repeated use, which device is applied on the object, its vessel, package or contaner, e.g. as the heating is performed.
According to the invention it is preferred that the label or device comprises a field of temperature sensitive color which exhibits a color shift at the desired end temperature of the object, preferably the ready-temperatureof a food-stuff or a beverage.
It is conceivable, according to the invention, that the information carrier has the shape of a label or a device for use in an oven having a lighting within the - oven cavity, in which case the information carrier preferably is characterized in that the field with temperature sensitive color is composed of two layers, viz. an uppermost layer, which shifts from transparent into non-transparent, or vice versa, at a color shift, and a lowermost layer, which exhibits fluorescense at activation by the oven cavity lighting.
Prior to describing the invention in more details with reference to the figures in the drawin it might be worthwhile to make some general remarks with respect to the invention, viz. that the invention generally is based on the concept that it is possible to utilize o-ptical reading for the provision of a control system for an oven, which is partially associated with the oven itself, and the technical establishment thereof, and which is 438~
partially associated with the object or the food-stuff which should be subjected to heating/preparation,and, further, the realization that such a system, particularly the case with feed-back control, which in known ovens is solely associated with the technical establishment of the oven, may achieve considerable simplifications in the design of the control system of the oven and the general operation of the oven, and that this may be achieved while utilizing cost efficient technical solutions that are known per se by those skilled in the art. There exists no principal limit for how much control information may be taken from the information carrier. Just as well as the information carrier may hold information for choice of a pre-set program with the control unit of the oven, the information carrier itself may comprise the control program, which is then read into the control unit at the actual use. In the present case the term optical reading is used, e.g. reading while using light vawelengts within the optical range, but also other vawelengths may be possible. Thus, the information carrier may comprise fields with chrystalline or similar substances which at activation by scanning radiation my be cauesd to emit their information by discree vawelengths or within defined vawelength-rangesa. A feedback control may be achieved in that these substances are adapted to emit radiation of a temperature dependent vawelength.
According to a further development of the invention the vessel may be provided with a further characterizing feature in the shape of an additional, temperature non-sensitive color marking which is disposed in such a mannerthat it can be detected by a further detecting device, adapted to control the start of the heating procedure.
Only vessels having a marking that controls the stop of the heating are provided with the additional color marking, which results in that if a vessel that lacks both kinds of markings is inserted into e.g. a microvawe oven having an indicator for stopping of the heating then no heating can be started. In this way it is prevented that a heating is started that cannot be automatically in-terrupted at the desired temperature.
The temperature sensitive color can be applied by painting or by printing the color directly on at least one of the valls of the vessel. As the temperature sensitive color may contain liquid chrystals and may be difficult to apply by printing procedures it may be advantageous to have to color applied to a base having a self-adhering glue on one side thereof, by means of which the color marking may be affixed to at least one of the walls of the vessel. If the vessel has a plastic covered surface then the marking may be detached after use in to be used repeatedly. Such color markings, having different temperature definitions, may be stored on a storage sheet and may be moved to and from a vessel as desired.
Tests have verified that the temperature of the content of the vessel is only slightly higher than the temperature of the outer surface of the vessel. Only at temperature higher than about 65 C and up to 95 C will the temperature of the surface be about 5 C lower. It is possible to compensate for this by the manufacture of the colormarkings, e.g. by disposing the color markings interiorly of a vessel made wholly or partly of a transparent material, so that the color marking is visible from the outer side.
The invention is disclosed in more details below with reference had to the accompanying drawings which schematically show various exaples of vessels according to the invention and wherein figure 1 is a perspective view of a vessel according to a first embodiment, used as an example, figure 2 is a side elevation of a vessel according to a second example, disposed in a micro-vawe oven, figure 3 is a side elevation of a vessel according to a third embodiment disposed on a heating plate, figure 4 is a perspective view of a vessel acording to a further embodiment, and figure 5 is view of a chart of color mar-kings and a partial view of a vessel having a marking for disposition of color marks.
Figure 1 shows a container or vessel of conventional type, containing water and a capsule with instant coffee powder (not shown). The content of the capsule should be heated up to 93 C in order for the capsule to open, and, thus, in order for the coffee so produced to have the correct serving temperature. Therefore, the container is provided with a temperature sensitive color marking 2 which shifts color at a temperature of the outer surface of the vessel that corresponds to a temperature of 93 C of the coffee within the vessel with a ordinary performed cooking, which has to be determined from case to case. On an adjacent side the container is provided with another temperature-sensitive color marking 3 which shifts its color at a temperature of 80 C of the content of the container. Further, the continer 1 is provided with a color mark 4 which denotes that the container is intended to be used for heating in a micro-vawe oven having automatic means for control of the heating up to the desired temperature.
Such an oven 5 is shown schematically in figure 2. A
container 1 of the kind as shown in figure 1, although made from a transparent material and having a color marking 9 disposed internally of the container, is placed in the oven in a guide 6 for the lowermost part of the container with the color marking 2 facing a sensing device 7. Simultaneously, the color mark 4 is positioned opposite a second sensing device 8. When the oven is switched on the sensing device 8 senses the existence of the color mark 4 nd activates a relay or the like so that the oven starts the heating. Within a few minutes the content of the container has reached the desired 93 and the color mark 2 shifts color which is sensed by the sensing device 7 which interrupts the heating through a relay or the like (not shown). In case a heating to only 80 C had been desired then the container should have been 215438~
placed in the oven with the color mark 3 facing the sensing device 7.
The design of the oven 5 and of the devices 7 and 8 do not form a part of the invention, and therefore they are not described in more details here.
Sometimes, particularly with containers that may be opened and resealed, it is desirable to determine the heating temperature from case to case. It is then possible to use self-adhering color markings that are applied to the container in question. Such color markings on a carrier 21 of self-adhering plastics are shown in figure 5 and are denoted 22, 23 and 24 for the temperatures 60 C, 80 C and 93 C, respectively, and are affixed to a chart 25. To facilitate detaching the carriers 21 are provided with a flap, that is non-adhering and on which the temperature values are preferably printed. One such color marking is adapted to be affixed to a container which is provided with a an indication 30 where the color marks 22, 23 och 24 are to be placed in order to get a correct position within the micro-vawe oven. If desired,the color markings may be detached from the container 1 after use, and again affixed to the chart 25 for repeated use a number of times.
The present invention relates to a vessel, particularly to a vessel having walls of a material which permits heating of the content of the vesssel by radiation, in particular micro-wave radiation.
Such vessels, and the term vessel is used here to include also packages and containers of different kinds which normally, at least partially, have walls of material which depends on the actual kind of heating. If the heating takes place by heat radiation of the type infrared heat radiation from e.g. a cooking plate, the material may be metal, at least in the bottom. If the heating takes place by means of the nowadays very common heating type using micro-vawes, then the material may be cardboard or plastics or the like. Below, to facilitate, such vessels, along with the instant content in each case, will sometimes be referred to as "object".
Common to all types of heating is the problem of accurately controlling the temperature, e.g. to prevent that the temperature is insufficient for the application in question or to prevent that the vessel as used bursts up and starts leaking due to too a high internal pressure within the vessel, which may happen if the temperature has unintentionally become too high.
The object of the present invention has been to provide a vessel wherein this problem has been remedied, and, in accordance therewith to provide an information carrier for use with such vessels.
According to the invention this object has been achieved in that the vessel is provided with an information carrier having one or more optically readable control information fields which information carrier is adapted to be used in order to indicate the temperature of the object as the object is heated in an oven. Here, it is conceivable, for instance, to watch visually how the ~154~84 information carrier shifts color as the desired temperature has been reached, so that the heating procedure may be stopped then.
However, the information carrier is preferably adapted to cooperate with an optical reading device of the oven and a control device to control the heating procedure at least partially in dependence of the read temperature - information.
According to the invention it is preferred that the information carrier is arranged directly on the heating object, e.g. as a disposable label or, alternatively, as a device for repeated use, which device is applied on the object, its vessel, package or contaner, e.g. as the heating is performed.
According to the invention it is preferred that the label or device comprises a field of temperature sensitive color which exhibits a color shift at the desired end temperature of the object, preferably the ready-temperatureof a food-stuff or a beverage.
It is conceivable, according to the invention, that the information carrier has the shape of a label or a device for use in an oven having a lighting within the - oven cavity, in which case the information carrier preferably is characterized in that the field with temperature sensitive color is composed of two layers, viz. an uppermost layer, which shifts from transparent into non-transparent, or vice versa, at a color shift, and a lowermost layer, which exhibits fluorescense at activation by the oven cavity lighting.
Prior to describing the invention in more details with reference to the figures in the drawin it might be worthwhile to make some general remarks with respect to the invention, viz. that the invention generally is based on the concept that it is possible to utilize o-ptical reading for the provision of a control system for an oven, which is partially associated with the oven itself, and the technical establishment thereof, and which is 438~
partially associated with the object or the food-stuff which should be subjected to heating/preparation,and, further, the realization that such a system, particularly the case with feed-back control, which in known ovens is solely associated with the technical establishment of the oven, may achieve considerable simplifications in the design of the control system of the oven and the general operation of the oven, and that this may be achieved while utilizing cost efficient technical solutions that are known per se by those skilled in the art. There exists no principal limit for how much control information may be taken from the information carrier. Just as well as the information carrier may hold information for choice of a pre-set program with the control unit of the oven, the information carrier itself may comprise the control program, which is then read into the control unit at the actual use. In the present case the term optical reading is used, e.g. reading while using light vawelengts within the optical range, but also other vawelengths may be possible. Thus, the information carrier may comprise fields with chrystalline or similar substances which at activation by scanning radiation my be cauesd to emit their information by discree vawelengths or within defined vawelength-rangesa. A feedback control may be achieved in that these substances are adapted to emit radiation of a temperature dependent vawelength.
According to a further development of the invention the vessel may be provided with a further characterizing feature in the shape of an additional, temperature non-sensitive color marking which is disposed in such a mannerthat it can be detected by a further detecting device, adapted to control the start of the heating procedure.
Only vessels having a marking that controls the stop of the heating are provided with the additional color marking, which results in that if a vessel that lacks both kinds of markings is inserted into e.g. a microvawe oven having an indicator for stopping of the heating then no heating can be started. In this way it is prevented that a heating is started that cannot be automatically in-terrupted at the desired temperature.
The temperature sensitive color can be applied by painting or by printing the color directly on at least one of the valls of the vessel. As the temperature sensitive color may contain liquid chrystals and may be difficult to apply by printing procedures it may be advantageous to have to color applied to a base having a self-adhering glue on one side thereof, by means of which the color marking may be affixed to at least one of the walls of the vessel. If the vessel has a plastic covered surface then the marking may be detached after use in to be used repeatedly. Such color markings, having different temperature definitions, may be stored on a storage sheet and may be moved to and from a vessel as desired.
Tests have verified that the temperature of the content of the vessel is only slightly higher than the temperature of the outer surface of the vessel. Only at temperature higher than about 65 C and up to 95 C will the temperature of the surface be about 5 C lower. It is possible to compensate for this by the manufacture of the colormarkings, e.g. by disposing the color markings interiorly of a vessel made wholly or partly of a transparent material, so that the color marking is visible from the outer side.
The invention is disclosed in more details below with reference had to the accompanying drawings which schematically show various exaples of vessels according to the invention and wherein figure 1 is a perspective view of a vessel according to a first embodiment, used as an example, figure 2 is a side elevation of a vessel according to a second example, disposed in a micro-vawe oven, figure 3 is a side elevation of a vessel according to a third embodiment disposed on a heating plate, figure 4 is a perspective view of a vessel acording to a further embodiment, and figure 5 is view of a chart of color mar-kings and a partial view of a vessel having a marking for disposition of color marks.
Figure 1 shows a container or vessel of conventional type, containing water and a capsule with instant coffee powder (not shown). The content of the capsule should be heated up to 93 C in order for the capsule to open, and, thus, in order for the coffee so produced to have the correct serving temperature. Therefore, the container is provided with a temperature sensitive color marking 2 which shifts color at a temperature of the outer surface of the vessel that corresponds to a temperature of 93 C of the coffee within the vessel with a ordinary performed cooking, which has to be determined from case to case. On an adjacent side the container is provided with another temperature-sensitive color marking 3 which shifts its color at a temperature of 80 C of the content of the container. Further, the continer 1 is provided with a color mark 4 which denotes that the container is intended to be used for heating in a micro-vawe oven having automatic means for control of the heating up to the desired temperature.
Such an oven 5 is shown schematically in figure 2. A
container 1 of the kind as shown in figure 1, although made from a transparent material and having a color marking 9 disposed internally of the container, is placed in the oven in a guide 6 for the lowermost part of the container with the color marking 2 facing a sensing device 7. Simultaneously, the color mark 4 is positioned opposite a second sensing device 8. When the oven is switched on the sensing device 8 senses the existence of the color mark 4 nd activates a relay or the like so that the oven starts the heating. Within a few minutes the content of the container has reached the desired 93 and the color mark 2 shifts color which is sensed by the sensing device 7 which interrupts the heating through a relay or the like (not shown). In case a heating to only 80 C had been desired then the container should have been 215438~
placed in the oven with the color mark 3 facing the sensing device 7.
The design of the oven 5 and of the devices 7 and 8 do not form a part of the invention, and therefore they are not described in more details here.
Sometimes, particularly with containers that may be opened and resealed, it is desirable to determine the heating temperature from case to case. It is then possible to use self-adhering color markings that are applied to the container in question. Such color markings on a carrier 21 of self-adhering plastics are shown in figure 5 and are denoted 22, 23 and 24 for the temperatures 60 C, 80 C and 93 C, respectively, and are affixed to a chart 25. To facilitate detaching the carriers 21 are provided with a flap, that is non-adhering and on which the temperature values are preferably printed. One such color marking is adapted to be affixed to a container which is provided with a an indication 30 where the color marks 22, 23 och 24 are to be placed in order to get a correct position within the micro-vawe oven. If desired,the color markings may be detached from the container 1 after use, and again affixed to the chart 25 for repeated use a number of times.
Claims (20)
1.A vessel for preparation of e.g. food-stuff and beverages by heating, characterized in that the vessel is provided with an information carrier having one or more optically readable control information fields which information carrier is adapted to be used in order to indicate the temperature of the object as the object is heated in an oven.
2. A vessel as claimed in claim 1, characterized in that the information carrier is adapted to cooperate with an optical reading device of the oven and a control device to control the heating procedure at least partially in dependence of the read temperature information.
3. A vessel as claimed in claim 1 or 2, characterized in that the information carrier is arranged directly on the heating object, e.g. as a disposable label or, alternatively, as a device for repeated use, which device is applied on the object, its vessel, package or contaner, e.g. as the heating is performed.
4. A vessel as claimed in one or more of claims 1 -3, characterized in that the label or device comprises a field of temperature sensitive color which exhibits a color shift at the desired end temperature of the object, preferably the ready-temperature of a food-stuff or a beverage.
5. A vessel as claimed in one or more of claims 1 -4, characterized in that the information carrier has the shape of a label or a device for use in an oven having a lighting within the oven cavity, in which case the information carrier preferably is characterized in that the field with temperature sensitive color is composed of two layers, viz. an uppermost layer, which shifts from transparent into non-transparent, or vice versa, at a color shift, and a lowermost layer, which exhibits fluorescense at activation by the oven cavity lighting.
6. A vessel as claimed in one or more of claims 1 -5, characterized in that the vessel is provided with a further characterizing feature in the shape of an additional, temperature non-sensitive color marking which is disposed in such a manner that it can be detected by a further detecting device, adapted to control the start of the heating procedure.
7. A vessel as claimed in one or more of claims 1 -6, characterized in that the temperature sensitive color is applied by painting or printing of the color directly on at least one of the walls of the vessel.
8. A vessel as claimed in one or more of claims 1 -6, characterized in that the color is arranged on a carrier sheet having one side thereof provided with a self-adhering bonding agent by mean of which the marking may be affixed to at least one of the walls of the vessel.
9. A vessel according to one or more of claims 1 - 8, characterized in that the information carrier is arranged on the inner surface of a vessel which is manufactured at least partially from a transparent material, so that the color markings are visible from the outer side.
10. A vessel as claimed in one or more of claims 1 -9, charactrized in that the vessel is provided with a plurality of color markings which shift color at different temperatures.
11. A vessel as claimed in one or more of claims 1 to 10, characterized in that the vessel is provided with at least one additional, temperature non-sensitive color marking, which is disposed in such a manner that it can be detected by a further detecting device, adapted to control the start of the heating procedure.
12. An information carrier having one or more optically readable control information fields and adapted to be used with or on a heating object, the vessel thereof, its package or container during heating of the object in an oven, where the oven comprises an optical sensing device for touchlessa reading of the information carrier and a control unit for control of a heating procedure in dependence of the read information, characterized in that the information carrier is formed directly on the object or as a disposable label or the like fo be attached to the object or, alternatively, as a device for repeated use.
13. An information carrier as claimed in claim 12, characterized in that the label or device comprises a field of temperature-sensitive color which exhibits a color shift as the object attains the desired end temperature, preferably the ready temperature of a food-stuff or beverage.
14. An information carrier in the shape of a label or a device according to claim 13 for use with an oven having an oven cavity lighting, characterized in that the label with temperature-sensitive color is built up of two layers, viz. an uppermost layer, which shifts from tran-sparent into non-transparent, or vice versa, at a color shift, and a lowermost layer, which exhibits fluorescense at activation by the oven cavity lighting.
15. An information carrier as claimed in claim 13 or 14, characterized in that the field with temperature sensitie color has a reversible color shift at the ready temperature in that it reverts to its initial color as the field cools down.
16. A preparation vessel or container for use in an oven for heatin/preparation of a food-stuff or a beverage which is put into the vessel or container directly or in its package, where the oven comprises a reading device for touchless reading of an optically readable information characterized in that the vessel or container comprises an information carrier, adapted to read by the reading device and having one or more optically readable information fields, comprising control information for control of a heating/preparation procedure for the food-stuff or beverage.
17. A vessel or container as claimed in claim 16, characterized in that control information fileds having a temperature-sensitive color which exhibits a color shift at a ready temperature for the food-stuff or beverage is arranged on the vessel or container and in that the temperature-sensisitve color has a reversible color shift at the ready temperature in that it reverts to its initial color as the field cools down.
18. A vessel or a container as claimed in claim 17 for use with an oven having an oven cavitylighting, characterized in that the field with temperature-sensitive color is built up of two layers, viz. an uppermost layer, which shifts from transparent into non-transparent, or vice versa, at a color shift, and a lowermost layer, which exhibits fluorescense at activation by the oven cavity lighting.
19. A vessel or container as claimed in claim 17 or 18 for food-stuffs or beverages with different ready temperatures och a food-stuff having different choiseable ready temperatures, characterized in that control information field for the respective ready temperatures are arranged in different positions or on different sides of the vessel or container in order to be able to cooperate with the reading device.
20. The use of an information carrier having one or more optically readable control information fields och intended to be put upon or arranged on a food-stuff or a beverage, the preparation vessel, package, container or the like thereof to control a heating/preparation procedure thereof in an oven having a reading device for touchless reading of the information carrier, preferably a micro-vawe oven, for heating a beverage or food-stuff, particularly a liquid food-stuff, in its package, and provided with an oven cavity, the. shape of which is adapted to the shape of the package, on the outermost surface of which there are provided one or more fields, which form the said information carrier.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9501942A SE9501942D0 (en) | 1995-05-24 | 1995-05-24 | Containers for the preparation or preparation of, for example, food and drink by heating and information carriers for use in such containers |
| SE9501942-8 | 1995-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2154384A1 true CA2154384A1 (en) | 1996-11-25 |
Family
ID=20398429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2154384 Abandoned CA2154384A1 (en) | 1995-05-24 | 1995-07-21 | Vessel for preparation or cooking of e.g. food-stuff and beverages by heating, and an information carrier for use with such vessels |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2154384A1 (en) |
| SE (1) | SE9501942D0 (en) |
-
1995
- 1995-05-24 SE SE9501942A patent/SE9501942D0/en unknown
- 1995-07-21 CA CA 2154384 patent/CA2154384A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| SE9501942D0 (en) | 1995-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |