EP3702708A1 - Procédé et dispositif de refroidissement de produits alimentaires - Google Patents
Procédé et dispositif de refroidissement de produits alimentaires Download PDFInfo
- Publication number
- EP3702708A1 EP3702708A1 EP19160325.7A EP19160325A EP3702708A1 EP 3702708 A1 EP3702708 A1 EP 3702708A1 EP 19160325 A EP19160325 A EP 19160325A EP 3702708 A1 EP3702708 A1 EP 3702708A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- cooling time
- determined
- food product
- temperature limit
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 248
- 235000013305 food Nutrition 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000003213 activating effect Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000011664 signaling Effects 0.000 claims description 4
- 239000000047 product Substances 0.000 description 20
- 239000012467 final product Substances 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 4
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000036962 time dependent Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
- F25D2400/361—Interactive visual displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2500/00—Problems to be solved
- F25D2500/04—Calculation of parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/16—Sensors measuring the temperature of products
Definitions
- the present invention relates to a method for cooling food products, in particular thermally treated food products, even more particular cooked food products.
- the present invention also relates to a cooling device for cooling food products, in particular thermally treated food products, even more particular cooked food products.
- Cooling devices such as blast chillers or blast freezers, are particularly known in the professional kitchen services sector. The purpose of such cooling devices resides in cooling a cooked food product immediately after its preparation for preservation purposes.
- a typical cooling device comprises a cooling chamber delimiting a cooling space of the cooling device and a door moveable between an open position and a closed position at which the door respectively allows the insertion and/or removal of the food product into and/or from the cooling space and to close and/or seal the cooling space.
- a typical cooling device also comprises a temperature sensor configured to determine and/or measure a temperature of the food product, in particular so as to monitor the temperature course of the food product during its cooling within the cooling space.
- a typical cooling device also comprises a display window configured to display information such as the temperature within the cooling space and/or the product temperature of the food product being disposed within the cooling space and/or operational parameters such as set-point temperatures.
- a display window is part of a human-machine interface allowing to set the operational parameters of the cooling device.
- the operation of the cooling device should guarantee that the time that the food product has a temperature between roughly 57°C and 8°C is limited as this is the temperature range at which bacterial growth is the fastest.
- varying national standards have been developed, which define a maximum cooling time allowed for controlling the food product from a pre-defined upper temperature limit to a pre-defined lower temperature limit in order for the food product being considered to be in conformity with the safety standards otherwise the food product is to be considered to not to be in conformity.
- one national standard fore sees that the maximum cooling time of the food product from 63 °C to 10 °C must not exceed 110 minutes.
- Some cooling devices are configured to determine the real cooling time from the upper temperature limit to the lower temperature limit and compare the real cooling time with the maximum cooling time allowed. In the case that the real cooling time exceeds this maximum cooling time, the cooling device releases an alert signal indicating that the food product was not cooled according to the safety standards, meaning that the cooled food product is not suitable to be consumed by costumers leading to unwanted and undesired commercial losses.
- One aim of the present invention is to provide for a method for cooling food products, in particular cooled food products, to overcome, in a straightforward manner, at least one of the aforementioned drawbacks.
- Another aim of the present invention is to provide for a cooling device for cooling food products, in particular cooled food products, to overcome, in a straightforward manner, at least one of the aforementioned drawbacks.
- a method for cooling, in particular chilling or freezing, a food product comprising at least the steps of placing a food product to be cooled, in particular to be chilled or to be frozen, into a cooling space of a cooling device, estimating and/or calculating a cooling time needed to cool the food product from a pre-determined upper temperature limit to a pre-determined lower temperature limit, comparing the estimated and/or calculated cooling time with a pre-determined maximum cooling time and releasing and/or prompting an alert signal indicating the risk of the cooling time exceeding the pre-determined maximum cooling time if the estimated and/or calculated cooling time is larger than the pre-determined maximum cooling time.
- a user is alerted about the risk of not conforming with a safety standard as expressed in the pre-determined upper, lower temperature limits and the maximum cooling time.
- a step of estimating and/or calculating is executed prior to the food product reaching the pre-determined upper temperature limit and/or prior to reaching the pre-determined lower temperature limit. As the user is alerted about the risk of non-conformity sufficiently early, the user has time to institute counter-measures so as to conform, at the end of the cooling process, with the safety standard.
- the cooling device comprises an information display and during the step of releasing and/or prompting the alert signal, an information about the risk of the cooling time exceeding the pre-determined maximum cooling time is displayed in the information display, in particular within a pop-up window appearing in the information display. This allows to visually drawing the attention of a user to the possible risk of non-conformance.
- the alert signal contains information inviting and/or signalling and/or suggesting a user to modify operating parameters of the cooling device.
- the user is aided in determining the correct counter-measures so as to obtaining a food produce 2 conforming at the end of the cooling process with the safety standard applied.
- the method also comprises a step of adjusting and/or setting operating parameters of the cooling device. This allows a user to define some details of the cooling process.
- the method also comprises at least one step of repetition, during which at least the steps of estimating and/or calculating, are repeated.
- at least one step of repetition during which at least the steps of estimating and/or calculating, are repeated.
- the method also comprises at least one step of adjusting and/or setting, which is executed after the steps of estimating and/or calculating, comparing and releasing and/or prompting and the step of repetition is executed after the step of adjusting and/or setting. This allows to control whether any change of the operating parameters resolves the problem of non-conformance with the safety standards.
- the method further comprises a step of choosing and/or selecting and/or setting the pre-determined upper temperature limit, the pre-determined lower temperature limit and the pre-determined maximum cooling time.
- the user can define, which safety standard has to be applied, possibly also according to the user's own standards.
- the method also comprises a step of activating a cooling process for cooling the food product within the cooling space.
- the method also comprises a step of determining and/or measuring the product temperature of the food product. In this way, it is possible to monitor the real-time course of the product temperature for monitoring and/or control purposes.
- a cooling device for cooling a food product comprising a cooling space for receiving the food product to be cooled, a calculation unit configured to estimate and/or calculate a cooling time needed to cool the food product from a pre-determined upper temperature limit to a pre-determined lower temperature limit and to compare the estimated and/or calculated cooling time with a pre-determined maximum cooling time, and an alert unit configured to release an alert signal indicating the risk of the cooling time exceeding the pre-determined maximum cooling time if the estimated and/or calculated cooling time is larger than the pre-determined maximum cooling time.
- the cooling device comprises an information display and the alert unit is configured to trigger and/or control the appearance of an information about the risk of the cooling time exceeding the pre-determined maximum cooling time within the information display. This allows to visually alerting, in use, the risk of non-conformity to a user.
- the cooling device further comprises a human-machine interface configured to allow for the setting and/or manipulation and/or insertion of operating parameters of the cooling device and/or for setting and/or manipulating and/or inserting the pre-determined upper temperature limit, the pre-determined lower temperature limit and the pre-determined maximum cooling time.
- a human-machine interface configured to allow for the setting and/or manipulation and/or insertion of operating parameters of the cooling device and/or for setting and/or manipulating and/or inserting the pre-determined upper temperature limit, the pre-determined lower temperature limit and the pre-determined maximum cooling time.
- the cooling device further comprises a memory unit configured to store one or more parameter sets of pre-determined upper temperature limit, the pre-determined lower temperature limit and the pre-determined maximum cooling time.
- a memory unit configured to store one or more parameter sets of pre-determined upper temperature limit, the pre-determined lower temperature limit and the pre-determined maximum cooling time.
- number 1 indicates as a whole a cooling device for cooling a food product 2, in particular a thermally treated food product, even more particular a cooked food product.
- Cooling device 1 is configured to cool, in particular to chill or to freeze, food products 2 as different as e.g. bakery goods, meat, fish, or any other heat-processed food product.
- cooling device 1 is configured to cool food product 2 form an initial product temperature to a defined and/or desired final product temperature.
- cooling device 1 could be of the blast chilling type and/or of the blast freezing type.
- cooling device 1 is adapted to cool, in particular to chill, food product 2 to a temperature between 5°C and 0°C and in the case of cooling device 1 being of the blast freezing-type, cooling device 1 is adapted to cool, in particular to freeze, food product 2 to a temperature below 0°C, in particular at least to -18°C or even lower.
- cooling device 1 is controllable, e.g. by a user, so as to set the desired final product temperature and/or any other operational parameter of cooling device 1.
- the core temperature of food product 2, as determined and/or measured at the core of food product 2 defines and/or corresponds to the product temperature of food product 2.
- cooling device 1 comprises a cooling chamber 3 enclosing a cooling space 4 of cooling device 1.
- cooling space 4 being configured to receive at least one food product 2; i.e., in use, food product 2 is placed within cooling space 4 for cooling food product 2.
- cooling device 1 also comprises a closing element, in particular a door 5, configured to selectively open and close cooling space 4.
- door 5 is moveable between a closed position and an open position at which door 5 is configured to respectively open and close cooling space 4.
- door 5 is controlled into the open configuration access to closing space 4 is possible for introducing and/or removing food product 2 into and/or from cooling space 4.
- door 5 is hinged to cooling chamber 3 for being moveable between the closed and open position.
- cooling device 1 comprises a functional unit (not shown and known as such) configured to control the temperature, in particular to cool, cooling space 4.
- cooling cooling space 4 means that the functional unit is adapted to control the temperature within cooling space 4 to any defined temperature being below the ambient temperature.
- the functional unit is adapted to cool the cooling space to at least 5 °C and/or to at least 0°C and/or to at least -18 °C and/or to at least -41°C.
- the functional unit is configured to control the temperature of cooling space 4 for cooling, in use, food product 2 placed within cooling space 4.
- cooling device 1 further comprises at least one temperature sensor 6 configured to determine and/or measure the product temperature, in particular the product temperature at the core of food product 2.
- temperature sensor 6 is configured to be inserted into food product 2.
- the safety standards prescribe that a cooling time of food product 2 from a pre-defined upper temperature limit to a pre-defined lower temperature limit must not exceed a maximum cooling time in order that food product 2 is to be considered to be in conformity with a safety standard.
- safety standards can e.g. be national safety standards, but also customized safety standards can be considered.
- standard N reflects a nonspecific example, which e.g. can correspond to customized values or the nth national standard.
- cooling device 1 further comprises a human-machine interface configured to allow for the setting and/or manipulation and/or insertion of:
- cooling device 1 comprises a memory unit to store one or more parameter sets of pre-determined upper temperature limit, the pre-determined lower temperature limit and the pre-determined maximum cooling time.
- each parameter set corresponds to a respective safety standard.
- cooling device 1 in particular the human-machine interface, is configured such that a user is adapted to set and/or manipulate and/or insert one or more parameter sets into the memory unit.
- the memory unit contains one or more parameter sets according to factory settings of cooling device 1.
- the human-machine interface is configured to allow a user for choosing and/or defining one parameter set prior and/or during and/or after operation of cooling device 1.
- cooling device 1 in particular the human-machine interface, further comprises an information display configured to display information, such as the temperature within cooling space 4 and/or the product temperature of food product 2 and/or operational parameters of cooling device 1 and/or the parameter sets and/or the parameter set chosen and/or the predetermined upper temperature limit and/or the pre-determined lower temperature limit and/or the pre-determined maximum cooling time and/or the already passes cooling time and/or other information.
- information such as the temperature within cooling space 4 and/or the product temperature of food product 2 and/or operational parameters of cooling device 1 and/or the parameter sets and/or the parameter set chosen and/or the predetermined upper temperature limit and/or the pre-determined lower temperature limit and/or the pre-determined maximum cooling time and/or the already passes cooling time and/or other information.
- cooling device 1 also comprises a monitoring unit operatively connected to temperature sensor 6 and configured to monitor the product temperature in dependence of time, e.g. for determining a real-time course of the product temperature during the cooling process.
- cooling device 1 further comprises a calculation unit configured to estimate and/or calculate the cooling time needed to cool food product 2 from the pre-determined upper temperature limit to the pre-determined lower temperature limit and to compare the estimated and/or calculated cooling time with the pre-determined maximum cooling time.
- the calculation unit is configured to estimate and/or calculate whether the time needed to cool food product 2 once it has, in use, reached the pre-determined upper temperature and to the pre-determined lower temperature exceeds or not the pre-determined maximum cooling time.
- the calculation unit is configured to estimate and/or calculate the cooling time in dependence of the set point of the final product temperature and/or of the type and/or kind and/or format and/or size of food product 2 and/or the initial product temperature and/or any other operational parameter of cooling device 1.
- the calculation unit is configured to estimate and/or calculate the time-dependent temperature curve of the product temperature, in particular starting from the initial product temperature, and to estimate and/or calculate the cooling time from the pre-determined upper temperature limit to the pre-determined lower temperature limit according to the estimated and/or calculated temperature curve.
- the initial temperature of food product 2 is higher than the pre-determined upper temperature limit.
- the calculation unit is configured to estimate and/or calculate the cooling time prior to the product temperature reaching the pre-determined upper temperature limit and/or the pre-determined lower temperature limit.
- cooling device 1 comprises an alert unit configured to release an alert signal indicating the risk of the cooling time exceeding the pre-determined maximum cooling time if the estimated and/or calculated cooling time, in particular as estimated and/or calculated by the calculation unit, is larger than and/or exceeds the pre-determined maximum cooling time.
- the alert unit is configured to trigger and/or control the appearance of an information, in particular within a pop-up window, about the risk of the cooling time exceeding the pre-determined maximum cooling time within the information display.
- the alert unit is also configured to trigger and/or control the appearance of an information inviting and/or signalling and/or suggesting a user to modify operating parameters of cooling device 1, such as e.g. the set point of the final product temperature and/or any other operating parameter.
- cooling device 1 cools food product 2 from the initial product temperature to the final product temperature.
- the method of cooling food product 2 in particular by means of cooling device 1, comprises at least the following steps:
- the step of placing is executed prior to the steps of estimating and/or calculating and comparing and releasing and/or prompting.
- the step of estimating and/or calculating is executed prior to the step of comparing and the step of comparing is executed prior to the step of releasing and/or prompting.
- the method also comprises a step of inserting temperature sensor 6 into food product 2, in particular being executed after the step of placing and prior to the step of estimating and/or calculating.
- the method also comprises a step of moving door 5 between the closed and open configuration.
- the door 5 is moved into the open configuration prior to the step of placing and is moved into the closed configuration after the step of placing and/or the step of inserting.
- the method also comprises a step of activating a cooling process during which food product 2 (placed within cooling space 4 is cooled, in particular chilled or frozen, from the initial product temperature to the final product temperature.
- the functional unit is activated during the step of activating.
- the method also comprises a step of monitoring, in particular executed during the cooling process, during which, in particular by the monitoring unit, the product temperature is monitored in dependence of time.
- the method also comprises a step of adjusting and/or setting operating parameters of cooling device 1.
- the step of adjusting and/or setting can be executed prior and/or during and/or after the step of placing and/or the step of estimating and/or calculating and/or the step of comparing and/or the step of releasing and/or prompting.
- the step of adjusting and/or setting comprises a sub-step of setting the set point of the final product temperature.
- the method also comprises a step of determining and/or measuring the product temperature of food product 2.
- the step of estimating and/or calculating is executed prior to food product 2 reaching the pre-determined upper temperature limit and/or prior to reaching the pre-determined lower temperature limit.
- the step of estimating and/or calculating is executed immediately after the step of placing.
- immediately after means that this step is executed with food product 2 being arranged and door 5 being moved into the closed position and/or with temperature sensor 6 being inserted into food product 2.
- the calculation unit estimates and/or calculates the estimated and/or calculated cooling time.
- the calculation unit estimates and/or calculates the time-dependent temperature curve of the product temperature and estimates and/or calculates the cooling time from the pre-determined upper temperature limit to the pre-determined lower temperature limit according to the estimated and/or calculated temperature curve.
- the calculation unit compares the estimated and/or calculated cooling time with the maximum cooling time.
- the information about the risk of the cooling time exceeding the pre-determined maximum cooling time is displayed in the information display, in particular in a pop-up window appearing within the information display.
- the step of releasing and/or prompting comprises the release of an acoustic signal and/or further visual signals and/or the emission of other digital signals such as the sending of an e-mail and/or of a short message (SMS) and/or similar.
- SMS short message
- the alert signal contains information inviting and/or signalling and/or suggesting a user to modify operating parameters of cooling device 1, such as the set point of the final temperature.
- the step of adjusting and/or setting is newly executed, in particular by a user, after the release of the alert signal.
- the method also comprises at least one step of repetition, during which at least the steps of estimating and/or calculating and comparing are repeated and, in particular if applicable (i.e. if the estimated and/or calculated cooling time is above the pre-determined maximum cooling time), also the step of releasing and/or prompting.
- the step of repetition is executed after a change of the operating parameters of cooling device 1 and/or after the step of adjusting and/or setting.
- the step of repetition is frequently and/or continuously and/or singularly executed during the cooling of food product 2 from the initial product temperature to the final product temperature so as to frequently and/or continuously and/or singularly control the compliance of the cooling of food product 2 with the respective safety standard.
- the method also comprises a step of confirming, during which a signal is issued (e.g. on the display window and/or another visual signal and/or another acoustic signal and/or any other kind of signal) indicating that the estimated and/or calculated cooling time is in conformance and/or is identical and/or below the maximum cooling time.
- a signal e.g. on the display window and/or another visual signal and/or another acoustic signal and/or any other kind of signal
- the method also comprises a step of choosing and/or selecting and/or setting the pre-determined upper temperature limit, the pre-determined lower temperature limit and the pre-determined maximum cooling time and/or the parameter set to be used.
- the step of choosing and/or selecting and/or setting is executed by a user and, in particular through the human-machine interface.
- the method and cooling device 1 allow alerting a user immediately at the beginning of the cooling process of a possible risk of not conforming the standard requirements.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19160325.7A EP3702708B1 (fr) | 2019-03-01 | 2019-03-01 | Procédé et dispositif de refroidissement de produits alimentaires |
ES19160325T ES2923119T3 (es) | 2019-03-01 | 2019-03-01 | Procedimiento y dispositivo para refrigerar productos alimenticios |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19160325.7A EP3702708B1 (fr) | 2019-03-01 | 2019-03-01 | Procédé et dispositif de refroidissement de produits alimentaires |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3702708A1 true EP3702708A1 (fr) | 2020-09-02 |
EP3702708B1 EP3702708B1 (fr) | 2022-06-22 |
Family
ID=65685149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19160325.7A Active EP3702708B1 (fr) | 2019-03-01 | 2019-03-01 | Procédé et dispositif de refroidissement de produits alimentaires |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3702708B1 (fr) |
ES (1) | ES2923119T3 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5798694A (en) * | 1996-12-19 | 1998-08-25 | Motorola, Inc. | Food storage apparatus and methods and systems for monitoring a food item |
JP2000234832A (ja) * | 1999-02-17 | 2000-08-29 | Sanyo Electric Co Ltd | 急速冷却機の警報装置 |
US20180224150A1 (en) * | 2017-02-08 | 2018-08-09 | Walmart Apollo, Llc | System for monitoring an open container |
-
2019
- 2019-03-01 ES ES19160325T patent/ES2923119T3/es active Active
- 2019-03-01 EP EP19160325.7A patent/EP3702708B1/fr active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5798694A (en) * | 1996-12-19 | 1998-08-25 | Motorola, Inc. | Food storage apparatus and methods and systems for monitoring a food item |
JP2000234832A (ja) * | 1999-02-17 | 2000-08-29 | Sanyo Electric Co Ltd | 急速冷却機の警報装置 |
US20180224150A1 (en) * | 2017-02-08 | 2018-08-09 | Walmart Apollo, Llc | System for monitoring an open container |
Also Published As
Publication number | Publication date |
---|---|
EP3702708B1 (fr) | 2022-06-22 |
ES2923119T3 (es) | 2022-09-23 |
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