WO2023233426A1

WO2023233426A1 - A device for ripening edible foods and a system thereof

Info

Publication number: WO2023233426A1
Application number: PCT/IN2023/050515
Authority: WO
Inventors: Tristan Kleinpaste
Original assignee: Sabarikanth, Rajasundaram
Priority date: 2022-06-01
Filing date: 2023-06-01
Publication date: 2023-12-07

Abstract

Present disclosure discloses a device (100) for ripening edible foods (2). The device comprising an enclosure (10) defined with a base (10b) and at least one wall (28) extending from the base. At least one holder (1) is connected to the at least one wall. The at least one holder (1) is configured to receive at least one of the edible foods (2). A plurality of light sources (3) are installed on the at least one wall. The plurality of light sources are configured to impinge light on an outer surface of the edible foods. A plurality of auxiliary light sources (3a) are arranged within the at least one holder (1). The plurality of auxiliary light sources is configured to selectively illuminate a portion of edible foods for ripening.

Description

A DEVICE FOR RIPENING EDIBLE FOODS AND A SYSTEM THEREOF

RELATED APPLICATION

This application claims the benefit of Indian provisional patent application number 202241028477 filed on June 01, 2022.

TECHNICAL FIELD

Present disclosure relates in general to a device for ripening of edible foods such as fruits and vegetables. Particularly, but not exclusively the present disclosure relates to the device and a system for ripening edible foods using a light source.

BACKGROUND

Typically, edible foods like fruits and vegetables are stored in a cooler or a cooling chamber to prevent premature ripening. Conventionally, the fruits and vegetables are ripened by supplying various chemicals within the cooling chambers for a required time. The ripening time is controlled by adjusting a temperature within the cooling chambers. The ripened fruits or vegetables are then supplied to consumers or into the market. Also, typically the fruits or vegetables are ripened by wrapping them in a paper bag or a sock, in order to maintain the temperature and promote ripening. However, this takes a longer time for ripening and cannot be performed in large scale.

Other conventional systems include supply of ethylene gas into the cooling chambers for ripening of fruits and vegetables. Upon increasing a concentration of ethylene, the fruits such as Avocados, bananas etc., quickly soften and age, causing them to ripen quickly. This kind of ripening generally takes up to 4 to 7 days, depending on a season and a type of fruits and vegetables. Although, this ripening method is effective, however use of ethylene gas to ripen is harmful and toxic to humans which restricts its application in public places such as supermarkets or outlets. Also, usage of the ethylene gas causes change in taste and flavor of the fruits and vegetables.

Also, light sources such as LED fixtures or light sources are also used for ripening process. These light sources are fixed to a roof of a box such that the light may impinge on a surface of the fruits and vegetables that are placed within the box. Although, the existing LED lighting fixtures provide minimum number of wavelengths of light which is required to support photosynthetic activity (PA). Still, it is challenging to control the intensity of light falling on the fruit or vegetable to ripen them. Further, it is not possible to impinge uniform light on the fruit or vegetable. Consequently, this leads to incomplete or partial ripening of the fruits and vegetables which is undesirable. Further, it is also difficult to ripen a large quantity of fruits and vegetables which may require large space and complex systems. Also, this may prove challenging to ripen all the fruits and vegetables in a desired time period.

Therefore, a need exists for developing an improved device for accelerated ripening of fruits and vegetables to mitigate one or more above shortcomings.

SUMMARY

The one or more shortcomings of the prior art are overcome by a device for ripening edible foods (hereinafter referred to as a device) and additional advantages are provided through the provisions of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein.

The present disclosure relates to a device for ripening edible foods. The device comprises an enclosure defined with a base and at least one wall extending from the base. At least one holder is connected to the at least one wall and the at least one holder is configured to receive at least one of the edible foods. A plurality of light sources are installed on the at least one wall and the plurality of light sources that are configured to impinge light on an outer surface of the edible foods. Further, a plurality of auxiliary light sources are arranged within the at least one holder. The plurality of auxiliary light sources are configured to selectively illuminate a portion of edible foods for ripening.

In an embodiment of the present disclosure, the device comprises a plurality of sensors provided to the at least one wall, to sense at least one of a temperature and a light intensity values within the enclosure. The plurality of sensors are positioned apart from each other in a configuration that surrounds the edible foods within the enclosure.

In an embodiment of the present disclosure, the enclosure comprises a top cover connected to the at least one wall and configured to cover the enclosure. In an embodiment of the present disclosure, the enclosure comprises at least four walls (extending from the base. At least two walls among the at least four walls are disposed opposite to each other forming a cuboidal enclosure .

In an embodiment of the present disclosure, at least one cooling fan is mounted to the top cover, wherein the at least one cooling fan is configured to maintain a predefined temperature in a range of 18-27°c within the enclosure.

In an embodiment of the present disclosure, a plurality of conduits are arranged on at least one of the top cover and the at least four walls to spray a fluid onto the edible foods, to maintain a predetermined humidity level within the enclosure.

In an embodiment of the present disclosure, the device further comprises a control unit communicatively coupled to the plurality of light sources, the plurality of auxiliary light sources, the plurality of sensors and the at least one cooling fan. The control unit is configured to receive an input signal from the plurality of sensors corresponding to the light intensity and the temperature values within the enclosure. The control unit is configured to compare the light intensity and the temperature values obtained from the plurality of sensors with a predetermined data. Based on the comparison, the control unit is configured to actuate the plurality of light sources and the plurality of auxiliary light sources to impinge light on the edible foods at a predefined light intensity value. Further, the at least one cooling fan is actuated by the control unit to maintain the predefined temperature within the enclosure. The control unit is also configured to actuate the plurality of conduits to maintain humidity level within the enclosure.

In an embodiment of the present disclosure, the at least one holder comprises at least one strip extending from the at least one holder towards the at least one wall. The at least one strip supports the at least one holder within the enclosure at a predetermined distance from the base.

In an embodiment of the present disclosure, the plurality of light sources and the plurality of auxiliary light sources are configured to emit light at a predefined wavelength and frequency for ripening. The predefined wavelength of the light includes a spectrum of at least one of blue, red and white lights and the wavelengths of light is in a range of 380-750 nm based on a type of light used for illumination.

In an embodiment of the present disclosure, the edible foods include at least one of fruits and vegetables.

Present disclosure also provides a system to handle a device for ripening edible foods, the system. The system comprises a column and a plurality of platforms extending perpendicularly from the column. The plurality of platforms are arranged in a spaced apart configuration. An array of the devices is supported on the plurality of platforms, each device comprises of an enclosure defined with a base and at least one wall extending from the base. At least one holder is connected to the at least one wall, and is configured to receive at least one of the edible foods. A plurality of light sources are installed on the at least one wall, the plurality of light sources are configured to impinge light on an outer surface of the edible foods. A plurality of auxiliary light sources are arranged within the at least one holder and the plurality of auxiliary light sources are configured to selectively illuminate a portion of edible foods for ripening. Further, at least one robotic arm assembly is movably connected to each of the plurality of platforms. The at least one robotic arm assembly comprises a guide member connected each platform of the plurality of platforms. The guide member is configured to traverse on the plurality of platforms across the array. A robotic arm is coupled to the guide member and is configured to pick and place each device from the array of devices. A plurality of imaging devices connected to the guide member, wherein each of the plurality of imaging devices are configured to capture a data of the devices in the array. A control unit is communicatively coupled with the array of the devices. The control unit is configured to monitor a ripening state of the edible foods within each device in the array by analyzing the data captured by the plurality of imaging devices, receive a signal from a plurality of sensors connected to each device in the array corresponding to a light intensity and a temperature values within the device. The control unit is configured to compare the light intensity, humidity and the temperature values obtained from the plurality of sensors with a predetermined data. The control unit is configured to actuate the plurality of light sources and the plurality of auxiliary light sources to illuminate the light at the predefined light intensity value to facilitate uniform illumination on the edible foods within the enclosure. In an embodiment of the present disclosure, the system comprises a transportation unit configured to receive the plurality of devices picked by the at least one robotic arm assembly and dispatch the plurality of devices from the system.

Present disclosure also discloses a method of ripening edible foods using the device. The method comprises the steps of initially receiving by a control unit, a first signal from a user interface unit corresponding to one or more values of a light intensity and a temperature, actuating, by the control unit, a plurality of light sources and a plurality of auxiliary light sources based on the signals received from the user interface unit. Then, the control unit receives a second signal from a plurality of sensors corresponding to the actuation of the plurality of light sources and the plurality of auxiliary light sources at a predefined light intensity and the temperature value within the enclosure. Later, the control unit controls the operation of the plurality of light sources and the plurality of auxiliary light sources based on the second signal for uniform illumination of light on the at least one of edible food. Lastly, the control unit, deactivates the plurality of light sources and the plurality of auxiliary light sources upon ripening of the at least one of the edible food positioned within the device.

It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined together to form a further embodiment of the disclosure.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

The novel features and characteristic of the disclosure are set forth in the description. The disclosure itself, however, as well as a preferred mode of use, further objectives, and advantages thereof, will best be understood by reference to the following description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:

FIG 1 A illustrates a schematic front view of a device for ripening edible foods in accordance with an embodiment of the present disclosure.

FIG IB illustrates a perspective view of the device for ripening edible foods without a top cover, in accordance with an embodiment of the present disclosure.

FIG 1C illustrates a side view of a device and an air filtration, a climate control and an air treatment section for ripening edible foods in accordance with an embodiment of the present disclosure.

FIG 2 illustrates a perspective view indicating an enclosure with a provision to receive air into the enclosure, in accordance with an embodiment of the present disclosure.

FIG 3 illustrates a perspective view of the device for ripening edible foods, in accordance with an embodiment of the present disclosure.

FIG 4 illustrates top view of the enclosure depicting direction of light rays within a storage space, in accordance with an embodiment of the present disclosure.

FIGS 5A and 5B illustrates side and perspective views of the enclosure depicting the direction of light rays when the edible foods are oriented horizontally with respect to a base of the enclosure, in accordance with an embodiment of the present disclosure.

FIGS 6A and 6B illustrates a system with an array of devices for automated ripening edible foods in accordance with another embodiment of the present disclosure.

FIG. 7 illustrates a block diagram of a control unit of the device in accordance with an embodiment of the present disclosure; and

FIG. 8 illustrates a flow diagram of a method of ripening the edible foods using the device in accordance with an embodiment of the present disclosure.

The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the apparatus and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other assemblies for carrying out the same purposes of the present disclosure. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a nonexclusive inclusion, such that a setup, device, or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises... a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.

Embodiments of the present disclosure discloses a device for ripening edible foods without using toxic chemicals and gases and a system for handling the device. Conventional devices used for ripening may include freezers and chambers which store the edible foods after harvest. Once the harvest is collected, chemicals and gases, mostly ethylene gas is introduced into the chambers. The fruits react with increased quantities of the gas and undergo ripening. This process is not advisable to be carried out at home or near public places like supermarkets, outlets etc., as ethylene gas has harmful effects on humans and is only suitable for industrial purposes following strict safety procedures. Moreover, this process also takes about a week to ripen the edible foods using ethylene gas whereas natural methods such as covering the fruits in paper bags can take even more time. Further, it is not possible to impinge the light on a bottom surface of the fruit since the light is made to impinge from the top. Consequently, this leads to incomplete or partial ripening of the edible foods which is undesirable.

Accordingly, the present disclosure discloses a device for ripening edible foods without using any harmful chemicals or gases. Further, the device of the present disclosure reduces ripening time and offers increased quality and flavor of ripened edible foods with increased shelf life. Also, the device can be operated without refrigeration at typical indoor temperatures. Additionally, the device is simple and is designed with minimal components and thereby offers flexibility in transportation, handling and storage of the device. Further, the system allows to easily handle multiple devices to ripen higher quantity of edible foods within a predetermined periods of time. Thereby making the system suitable for mass ripening of the edible foods.

Referring to Figures 1 to 3 which illustrates a perspective view of device for ripening edible foods (2). The device for ripening edible foods (2) (hereby referred to as “the device ( 100)”) is configured to store and ripen the edible foods (2) after their harvest. The device (100) comprises an enclosure (10) in which all the components are arranged. The enclosure (10) is defined with a base (10b) which extends in a horizontal plane. At least one wall (28) extends perpendicularly from a base (10b). The base (10b) is bound by a plurality of walls that extend perpendicularly from each side of the base (10b), such as a front wall (not shown in FIG’s), side walls (28a, 28b), a rear wall (28d) to form a storage space (11). The side walls (28a, 28b) may be disposed opposite to each other. Further, the enclosure (10) is covered by a top cover (10a). All the components of the device (100) are rigidly secured on the base (10b) with a suitable fastening means inside the enclosure (10). The fastening means may be at least one of adhesive, thermal or mechanical means to secure the components. As an example, the components of the device (100) may be secured by screws, rivets, welding, or bolt and nuts on the base (10b) within the enclosure (10). In an embodiment, at least one of the front wall (not shown in FIG’s), the side walls (28a, 28b), the rear wall (28d), and the top cover (10a) is removable to allow a user or a machine to access the storage space (11) of the device (100) arranged thereof. The enclosure (10) may be of any shape selected from a group comprising of rectangle, square, circle or any polygonal structure to match the shape and size of the edible foods (2) that is placed within the enclosure (10). However, the geometrical shape selected above shall not be considered as a limitation as any other geometrical shape may be used to serve the purpose depending on the requirement. A plurality of sensors (12) is provided to the at least one wall (28) to sense at least one a temperature, a light intensity and a determine humidity within the enclosure (10). In an embodiment, the plurality of sensors (12) are positioned apart from each other in a configuration that surrounds the edible foods (2) within the enclosure (10). In an embodiment, the plurality of sensors (12) are at least one of a temperature sensor to monitor the air temperature inside the storage space (11). In an embodiment, additional sensors may be provided which include light wavelength/spectrometer, laser spectrography, additionally odor sensors may also be incorporated, air composition, surface temperature of the edible foods (2), climate conditions, light intensity or other important factors in the storage space (11).

Further, at least one holder (1) is fixed to the base (10b) of the enclosure (10) to accommodate the edible foods (2). The edible foods (2) may be positioned on the holder (1) vertically or horizontally. In an embodiment, the edible foods (2) may be at least one of fruits and/or vegetables such as but not limited to an avocado, mango, tomato, radish, banana etc. At least one strip (25) is configured to extend from the at least one holder (1) towards the at least one wall (28) to support the at least one holder (1) within the enclosure (10). The at least one strip (25) supports the at least one holder (1) at a predetermined distance from the base (10b). In an embodiment, the at least one strip (25) may be hollow in configuration to accommodate an electrical connecting element such as a wire (not shown). A provision (la) may be provided within a central part of each holder (1) to receive an auxiliary light source. The edible foods (2) may be mounted horizontally with respect to the base (10b), and the light sources (3) may be arranged on the top cover (10a) as shown in figures 5 A and 5B. In an embodiment, the edible foods (2) may be mounted at an angle with respect to the at least one holder (1). In an embodiment, the at least one holder (1) is positioned at a predetermined distance from the base (10b). In an embodiment, the at least one holder (1) may be of any shape such as circular, oval etc. which is complementary to a bottom surface of the edible foods (2) to be accommodated.

The present disclosure comprises a plurality of light sources (3) that are arranged on internal surface of the side walls (28a, 28b). The plurality of light sources (3) are configured to emit light (4) for illuminating the edible foods (2) positioned within the enclosure (10). The plurality of light sources (3) are of a semi-conductor light source such as light emitting diodes (LED’s) of different wavelengths, directly radiating or using waveguides or other diffuse methods to deliver light to edible foods (2). In an embodiment, laser diodes may also be used as future efficiencies increase. In an embodiment, the plurality of light sources (3) may be arranged linearly in the form of LED arrays or a plurality of LED fixtures which may be attached to the side walls (28a, 28b) by a suitable fastening means. The plurality of light sources (3) are configured to emit light (4)/ a plurality of light rays within the storage space (11) in all directions at various angles. The LEDs are selected with different wavelengths of light depending upon the type of edible foods (2) within the storage space (11). An intensity of light (4) from the LED’s may be within the visible spectrum of approximately 380 -750 nm, covering the entirety of the upper-UV and deep blue region through to deep red and near infrared wavelengths. A value of the light intensities are selected based on the type and species of edible foods (2) used for ripening. In an embodiment, the light rays (4) are passed through a transparent glass, or a transparent cover (9) arranged next to the light sources (3) within the enclosure (10) for illuminating the edible foods (2). In an embodiment, the transparent cover (9) may be cerium/phosphor coated or incorporate another stokes conversion emission or other light emitting surface coating or material impregnation.

The device further comprises the plurality of auxiliary light sources (3a). The plurality of auxiliary light sources (3a) are defined within the provision (la) of the at least one holder (1). configured to emit light to illuminate a bottom surface of the edible foods (2), if they cannot be reached with light rays normally, as shown in lower left of Fig. 1 A. In an embodiment, the plurality of auxiliary light sources (3a) are in form of a light tube or a wire (not shown in FIGS) looped within an internal surface of the at least one holder (1). that is used to supply power to the plurality of auxiliary light sources (3 a).

Referring to figure 4, the light (4) emitted from the plurality of light sources (3) and the plurality of auxiliary light sources (3a) illuminate the edible foods (2) positioned within the enclosure (10) in all the directions. An entire surface of edible foods (2) is exposed to the light rays (4) to start photosynthetic activity in the edible foods (2) for ripening. The light energy absorbed by the edible foods (2) is converted into chemical energy which enables them to synthesize necessary chemicals and sugars which are necessary for ripening. The photosynthetic activity is accelerated by adjusting the wavelengths of light for ripening of edible foods (2). In an embodiment, different sets of LED fixtures may be used to emit corresponding wavelengths of light. In an embodiment, a wavelength(s) of light (4) used to accelerate the photosynthetic activity within the storage space (11) are in range of 350-750nm. The light irradiance values lie in between 5-2500pmol/m²s. The light is emitted within the storage space (11) at a predetermined time intervals. For example, the light (4) may be emitted continuously for 12 hours and then ceased for another 12 hours. The preferable emission time may be of 18 hours while cut-off time is for remaining 6 hours for effective ripening of the edible foods (2).

Further, an aperture (20) is defined on the top cover (32) of the enclosure (10). The aperture (20) is configured to receive ambient air into the storage space (11) and also to allow easy access to the edible foods (2) positioned within the enclosure (10). In an embodiment, the aperture (20) is configured to discharge the fluid from the enclosure (10) into the atmosphere. In an embodiment, the aperture (20) may be of circular, square or in a rectangular configuration. The aperture (20) may comprise of a removable lid (not shown in figures) to seal the enclosure (10) from being exposed to the atmosphere. In an embodiment, a mesh or a netting (not shown in figures) may be provided to cover the aperture (20) to prevent the entry of foreign substances like dust, insects etc. In an embodiment, a carbon filter (6) is positioned at least at one end of the enclosure (10). The carbon filter (6) includes a porous substrate to trap pollutants within the air entering the enclosure (10) as shown in figure 1C. Further, an ozone or ionic filter along with a humidity control filter are positioned adjacent to the carbon filter (6) to remove the smoke particulate matter in the air and maintain required humidity within the enclosure (10) for improved ripening. The shape of the filters may be conformed to the shape of enclosure (10) at its end or may be in any other suitable configuration. In an embodiment, other filters such as High Efficiency Particulate Air (HEPA), anti-bacterial and cleaning sprays may be administered in separate sections, post-filtration. The device (100) further comprises a cooling fan (22) arranged above the aperture (20) and connected to the top cover (10a) at a predetermined distance. In an embodiment, the cooling fan (22) may be enclosed within a frame structure (20a) which is fastened to the top cover (10a). The fastening means may be any mechanical joint such as screws, nuts and bolts, rivets and welding etc. The cooling fan (22) is configured to pass or discharge the fluid within the enclosure (10) by forced convection to cool the edible foods (2) within the storage space (11) of the enclosure (10) and maintains a predefined temperature within the enclosure (10). The cooling fan (22) can be varied in speed to increase or decrease temperature of fruit as necessary, if environmental or input air temperature and or humidity control is not used. Further, an additional fan (5) can be mounted at any side of the enclosure (10) for air flow into the space (11). In an embodiment, the predefined temperature may be in a range of 15-30°C. The device (100) comprises a plurality of conduits (16) arranged on the side walls (28a, 28b). The plurality of conduits (16) are fastened to the side walls (28a, 28b) using suitable process such as welding, riveting or screwing etc. In an embodiment, the plurality of conduits (16) may be affixed to the side walls (28a, 28b) with an adhesive. In an embodiment, the plurality of conduits (16) are arranged on the top cover (10a) of the enclosure (10). The plurality of conduits (16) are defined with a plurality of perforations (16a) along a length of each conduit (16) of the plurality of conduits (16). The plurality of conduits (16) discharge a predefined volume of a fluid into the enclosure (10). In an embodiment, the fluid may be water or gas. The plurality of conduits (16) are configured to spray the fluid onto the edible foods (2) through the plurality of perforations (16a), to maintain a predetermined humidity level within the enclosure (10). In an embodiment, the plurality of conduits (16) may be structured in a cylindrical shape. However, this cannot be construed as a limitation and the plurality of conduits (16) may be structured in any hollow shape. In an embodiment, the plurality of conduits (16) may be connected to a fluid reservoir (not shown in FIG’s) that stores and supplies the fluid through the plurality of conduits (16) via a pump (not shown in FIG’s). In an embodiment, the fluid reservoir and the pump may be positioned exterior of the enclosure (10).

Further, the device (100) of the present disclosure comprises a control unit (15) communicatively coupled to the plurality of light sources (3), the plurality of auxiliary light sources (3a), the plurality of sensors (12), the cooling fan (22) and the pump. The control unit (15) is communicatively coupled to the plurality of light sources (3), sensors and the cooling fan (22). The control unit (15) is configured to control the operation of the plurality of light sources (3) and the cooling fan (22) inside the enclosure (10). The control unit (15) is responsible for selectively controlling and/or providing various intensities of light within the storage space (11) for effective ripening of the edible foods (2). The control unit is configured to receive a signal from the plurality of sensors (12) to evaluate the temperature of the storage space (11). The control unit (15) is configured to receive an input signal from the plurality of sensors (12) corresponding to the light intensity and the temperature values within the enclosure (10). The control unit (15) compares the light intensity and the temperature values obtained from the plurality of sensors (12) with a predetermined data that is stored within the control unit (15). In an embodiment, the predetermined data is stored within the control unit (15) which corresponds to a standard values of light intensity and temperature to be maintained with respect to a time period for ripening that is selected or input by n user. Upon comparison, the control unit (15) is configured to actuate the plurality of light sources (3) and the plurality of auxiliary light sources (3a) to impinge light on the edible foods (2) at a predefined light intensity value. The control unit (15) also actuates the at least one cooling fan (22) to maintain the predefined temperature within the enclosure (10). The control unit (15) is configured to actuate the pump to direct the fluid flow to the plurality of conduits (16) to spray the fluid within the enclosure (10) in order to maintain humidity level within the enclosure (10).

Further, an electrical power source (not shown in FIG’s) that is configured to power the cooling fan (22), plurality of light sources (3), the plurality of sensors (12) and the control unit (15). The power source may be at least one of electrical supply, battery powered or solar. In an embodiment, the device may be plugged into an AC/DC power source.

The control unit (15) further comprises, a processor (not shown in FIGS) and a memory unit (not shown in FIGS) are communicatively coupled to the processor. The processors can be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuitries, and/or any devices that manipulate signals based on operational instructions. The memory unit stores processor-executable instructions, which, on execution, causes the processor to receive one or more command signals associated with the user inputs from a user interface unit (14) of the device (100). In an embodiment, the user interface unit (14) is integrated to the control unit (15) to receive inputs from the user to perform the ripening process. The inputs received from the user may include, but are not limited to, a login credentials such as username and password, type of edible foods (2), required wavelengths, temperature within the enclosure (10), time interval, weight of the edible foods (2), humidity within the enclosure (10), ripening amount preference and any essential details that are required to perform controlled ripening process. In an embodiment there may be provided an input/ output device to display graphical information related to the ripening process.

In an embodiment, the device (100) includes a communication module (not shown in FIGS) that facilitates an interaction of the device (100) with an application installable on a computing device, through which an operation of the device (100) may be configured and controlled remotely. In an embodiment, the computing device includes, but is not limited to laptop computer, a desktop computer, a notebook, a workstation, a mainframe computer, a server, a network server, cloud, hand-held device, wearable device, and the like. The communication of the device (100) with the computing device may occur through a wide variety of networks and protocol types, including wired networks, for example, LAN, cable, etc., and wireless networks, such as WLAN, cellular, or satellite. In an embodiment, the communication may occur via Bluetooth Low Energy, LoRa, ZigBee, or any other electromagnetic radiation including radio or optical and the like. In an embodiment, a display of the computing device may also function as the user interface unit.

Referring to figures 6A and 6B, a system (200) for ripening edible foods (2) is disclosed. The system (200) comprises a column (203) extending vertically from a ground surface (201). A plurality of platforms (202) are structured to extend perpendicularly from the column (203). The plurality of platforms (202) are arranged in a spaced apart configuration to define a space (205) between each platform (202) of the plurality of platforms (202). Each platform is provided to define an area for accommodating an array (204) of the devices (100) for ripening edible foods (2) are disposed within the space (205). The Each platform (202) may be structured in any suitable shape considering the area required to accommodate the array of devices and also depending on the area available for installing the system (200). The array (204) of devices is supported on the plurality of platforms (202). Further, the system comprises at least one robotic arm assembly (206) movably connected to each of the plurality of platforms (202). The at least one robotic arm assembly (206) comprises at least one guide member (212) is movably connected to each platform (202) of the plurality of platforms (202).. The guide member (212) is configured to traverse on the plurality of platforms (202) across the array (204). In an embodiment, the guide member (212) may include rollers (not shown in figures) that may engage with each of the plurality of platforms (202). In an embodiment, the guide member (212) may be slidable on respective platform (202). A plurality of imaging devices (242) are connected to the guide member (212). Each of the plurality of imaging devices (242) are configured to capture an image/video data of the edible foods (2) accommodated within the devices (100) in the array (204). In an embodiment, the plurality of imaging device (242) may be a camera, a video recorder etc. In an embodiment, a plurality of spectral analysis devices (not shown in FIG’s) may be connected to the guide member (212). Each of the spectral analysis devices are configured to provide visual indication of the devices (100) and analysis of various wavelengths of light within the devices (100). The at least one robotic arm assembly (206) comprises a robotic arm (240) attached to the guide member (212). In an embodiment, the robotic arm (240) may be attached to a central portion of the guide member (212). The robotic arm (240) is configured to pick and place each device (100) from the array (204) of devices (100). In an embodiment, the robotic arm (240) may include a connecting portion (240a) that is configured to attached the robotic arm (240) to the guide member (212). A body (240b) is attached to the connecting portion (240a) and the body (240b) is connected to an end effector (241) that is actuated to pick and place the devices (100) from the array (204). The body (240b) comprises an actuating means (not shown in FIG’s) that is used to actuate the end effector (241). In an embodiment, the actuating means may be at least one of a motor, a battery etc. In an embodiment, the end effector (241) may be a plurality of grippers (241) that may magnetically attach to the devices (100) for handling the devices across the array (204) of devices (100).

A centralized control unit (215) is communicatively coupled with the array (204) of the devices (100). The centralized control unit (215) is connected to a database (not shown in FIG’s.) to store the data of devices (100) in the system (100). Each device (100) in the array (204) includes the plurality of sensors (12), the plurality of light sources (3), the plurality of auxiliary light sources (3a), the cooling fan (22), pump that are communicatively coupled to the centralized control unit (215). The plurality of sensors (12) are configured to monitor the light intensity, temperature and humidity values and send out the information to the centralized control unit (215) in a form of signals. The centralized control unit The centralized control unit (215) is configured to monitor a ripening state of the edible foods (2) within each device (100) in the array (204) by analyzing the data captured by the plurality of imaging devices (242). The centralized control unit (215) receives a signal from a plurality of sensors (12) connected to each device (100) in the array (204). The signal corresponds to a light intensity, humidity and a temperature values within each device (100) in the array (204). The centralized control unit (215) compares the light intensity, humidity and the temperature values obtained from the plurality of sensors (12) with a predetermined data. After comparison, the centralized control unit (215) actuates the plurality of light sources (3) and the plurality of auxiliary light sources (3 a) to illuminate the light at the predefined light intensity value to facilitate uniform illumination on the edible foods (2) within the enclosure (10). The centralized control unit (215) continuously monitors and controls the ripening process. The system further comprises a user interface unit (14) defined with a display unit. The user interface unit (14) is communicatively connected to the centralized control unit (215) and is configured to receive inputs from a user corresponding to one or more values of the light intensity and the temperature of the plurality of devices (100) to control the ripening process within the plurality of devices (100). The light intensity and the temperature values given by the user is processed by the centralized control unit (215) and the same are maintained within each device (100) in the array (204) by actuating the plurality of light sources (3) and plurality of auxiliary light sources (3a), the pump connected to the plurality of conduits (16) and the cooling fan (22). The data captured by the plurality of imaging devices (242) corresponding to the devices (100) which have completed the ripening of the edible foods (2) are transmitted to the user interface unit (14) by the centralized control unit (215). The plurality of imaging devices (242) are communicatively coupled to the centralized control unit (215). Such devices (100) are transported out of the system (200) by the robotic arm assembly (206). In an embodiment, the user operates the robotic arm assembly (206) to pick and place the devices out of the system (200) for dispatching the ripened edible foods (2) from the devices (100).

In an embodiment, the system (200) comprises a transportation unit (not shown in FIG’s) configured to receive the plurality of devices (100) picked by the at least one robotic arm assembly (206) and dispatch the plurality of devices (100) from the system (200). In an embodiment, the transportation unit may be at least one of a belt conveying means or any other suitable means. In an embodiment, the ripened edible foods (2) are sorted based on their type/grade and are shipped accordingly.

Referring to FIG. 8, a method of ripening the edible foods (2) using the device (100) is disclosed. The method comprises of initially placing the edible foods (2) on the holder (1) within the storage space (11). At step (301), the control unit (15) receives a first signal from the user interface unit (14) corresponding to one or more values of a light intensity and a temperature that is to be maintained within the enclosure (10) for ripening. The user inputs the values through the user interface unit (14). Then, at step (302) the control unit (15) actuates the plurality of light sources (3) and the plurality of auxiliary light sources (3a) based on the signals received from the user. The plurality of light sources (3) and the plurality of auxiliary light sources (3 a) activates the light sources (3) to emit a plurality of light rays (4) of a particular wavelength range inside the storage space (11). The light rays (4) are emitted at various angles on the edible foods (2) in all directions. The emitted light rays (4) illuminate the entire surface of edible foods (2). The edible foods (2) absorb the light rays (4) to initiate the photosynthetic activity for ripening the edible foods (2). The photosynthetic activity is accelerated by providing different wavelengths of light which include a spectrum of blue and red lights and may also incorporate white or green lights or other colours and wavelengths, which typically range in between 380-750 nm, and may include near infrared lights around 730nm. The temperature inside the storage space (11) is maintained by the cooling fan (22) and/or appropriate air temperature control upstream, for example air conditioning. The operation of the cooling fan (22) is controlled by the control unit (15) by monitoring the temperature within the storage space (11) with the aid of the sensors. The required humidity level is also maintained within the enclosure (10) by the control unit by activating the pump which directs the fluid to the plurality of conduits (16). Upon providing the required values of light intensity while maintaining a suitable humidity and/or room temperature within the storage space (11), the edible foods (2) have an advantageous photosynthetic response which facilitates swift ripening. Later, at step (303), the control unit (15) receives a second signal from the plurality of sensors (12) corresponding to the actuation of the plurality of light sources (3) and the plurality of auxiliary light sources (3a) at a predefined light intensity and the temperature value within the enclosure (10). At step (304), the control unit (15) continuously monitors the ripening process and light intensity and temperature values within the enclosure (10) and controls the operation of the plurality of light sources (3) and the plurality of auxiliary light sources (3a) based on the second signal for uniform illumination of light on the at least one of the edible food (2). After the ripening process is complete, at step (305), the control unit (15) deactivates the plurality of light sources (3) and the plurality of auxiliary light sources (3) upon ripening of the at least one of the edible food (2) and prepares the device (100) for dispatch or places fresh edible foods (2) within the device (100) to start the ripening process from step (301).

Further, the control unit (15) and the centralized control unit (215) generates one or more reports including information associated with the ripening progress, one or more recommendations of follow-up test procedures to be conducted, troubleshooting, service-related tasks or maintenance. Further, an analysis opinion is provided based on the intensity of the light passing through the edible foods (2) and the ripening progress is thus determined and displayed on the user interface unit (14). In an embodiment, any emissive technology may be used for illuminating or irradiating the surface for ripening of edible foods (2). The technologies may include remote phosphor, laser, OLED, micro-LED, fluorescent bulbs, plasma bulbs, gas envelopes, incandescent bulbs, halogen bulbs, bioluminescence, Quantum dot emitters, quantum emitters, COB LEDs etc. Further, a transparent surface or an optic such as focus lens, collimation lens may be positioned in front of the light source for better illumination of the surface of the edible foods (2).

Example: Experimental Data

As an example, a Haas avocado (originated from New Zealand) or any vegetable is placed within the ripening device (100) as illustrated in figure 1. The light wavelengths of 380-750nm are emitted by the light sources (3) within the storage space (11), the light irradiance value peaks above 900 pmol/m²s (micromols per square meter per second).

Demonstration

After placing the avocado/veg etable (2) within the storage space (11) of the ripening device (100), the plurality of light sources (3) are powered ON. A spectrum of light rays (4) of wavelengths equal to the photosynthetic peak ranges ranging from 380-750 nm are transmitted from the light sources (3) within the storage space (11). The light rays (4) from the light sources (3) illuminate the entire surface of the avocado (2). The avocado (2) absorbs the light energy and converts it into a chemical energy which is required for photosynthesis to synthesize required sugar and starches for ripening process. The wavelength of light energy accelerates the photosynthetic activity of the avocado (2). The control unit (15) controls the timing of light sources (3) and the wavelengths of light that is to be transmitted within the storage space (11). The light sources (3) are operated for 18 hours per day and the optimal light irradiance value is from 900-1400 pmol/m²s for optimum results and quicker ripening of the avocado (2).

Result

The ripening process is up to three times quicker than the conventional ripening methods using natural processes and similar to or faster than those using harmful chemical processes.. The shelf life of the avocado (2) is also typically increased by around 50% or more compared to naturally ripened avocado (2), which particularly in end season can barely sustain a shelf life of 1 -2 days before partial rot.

Some light measurement parameters that are considered while performing ripening process using the device (100) are given below:

Resolution - 0.1 pmol m^-2 s^-1

Calibration Uncertainty: - ± 5 %

Measurement Repeatability: - Less than 1 % up to 4000 pmol m^-2 s^-1,

Long-term Drift - Less than 2 % per year,

Non-linearity - Less than 1 % (up to 4000 pmol m^-2 s^-1),

Response Time - In Real time,

Field of view - 180°,

Spectral Range - 389 to 692 nm ± 5 nm,

Spectral Selectivity- Less than 10 % from 412 to 682 nm ± 5 nm.

Some operational parameters that are considered while performing ripening process using the device (100) are given below:

Time maximum deviation +- 10s,

Time Drift maximum deviation +/- 1 minute per month

External Air Temperature: Under 27°c

Fruit Temperature (optimal) 18-20°c

Airflow: 20-80 cu ft/m per fruit chamber (2-4 pieces) Vibration velocity under 0.32mm/s

In an embodiment, the device (100) may also be structured with the base (10b) alone in an open configuration without any walls to ripen the edible foods.

In an embodiment, the plurality of light sources (3), the plurality of auxiliary light sources (3a) and the control unit (15) are powered by a power source such as a battery.

In an embodiment, the storage space (11) of the device (100) can be compartmentalized such that edible foods (2) can be accommodated by layers. In an embodiment, the plurality of light sources (3) can be mounted on all the four walls (28a, 28b, 28c, 28d) based on the requirement.

The device (100) of the present disclosure is robust and without any complex attachments and or complex systems to allow ripening of edible foods (2) upon absorbing the light rays (4) thereby accelerating the photosynthetic activity for ripening.

The device (100) of the present invention has relatively lesser number of components and is compact in construction, thereby offering more sturdiness and reliability for maintenance and transportation.

The device (100) of the present invention facilitates ripening in a closed storage space (11) without being exposed to the atmosphere and foreign particles to provide best results.

The device (100) of the present invention increases the ripening speed by 30-50% when compared to the common method of natural processes and reduce the time taken compared to using chemicals and gases such as ethylene which have been proven to be toxic.

The device (100) of the present disclosure eliminates need of harmful chemicals and leave no residue into the environment, along with removing accidental exposure risk. The device (100) can also be used in close proximity to biological organisms.

The device (100) of the present disclosure provides accurate results by using control unit (15) and the plurality of light sources (3) for emitting light rays (4) of different wavelengths and recording the values of light intensities or irradiance values.

The device (100) of the present disclosure enables ripening of the edible foods (2) evenly without leaving any portion of the edible foods (2) to be unripen and thus provides improved taste and quality. The device (100) of the present disclosure increases the shelf life of the edible foods (2) when compared to the fruits ripened using conventional methods. The devices (100) in the system (200) includes a transportation means for easy transportation of the devices within the system (200) for moving the ripened edible foods (2) to and from the enclosures (10). The device (100) of the present disclosure can be easily used at distribution centres, supermarketsand warehouses etc. without having any harmful effects such as gaseous residues that may be formed while ripening using ethylene or any chemical substances.

Equivalents:

With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting.

Referral Numerals:

Claims

We claim:

1. A device (100) for ripening edible foods (2), the device (100) comprising: an enclosure (10) defined with a base (10b) and at least one wall (28) extending from the base (10b), at least one holder (1) connected to the at least one wall (28), wherein the at least one holder (1) is configured to receive at least one of the edible foods (2); a plurality of light sources (3) installed on the at least one wall (28), the plurality of light sources (3) are configured to impinge light on an outer surface of the edible foods (2); and a plurality of auxiliary light sources (3 a) arranged within the at least one holder (1), wherein the plurality of auxiliary light sources (3a) is configured to selectively illuminate a portion of edible foods (2) for ripening.

2. The device (100) as claimed in claim 1, comprises a plurality of sensors (12) provided to the at least one wall (28), to sense at least one of a temperature and a light intensity value within the enclosure (10).

3. The device (100) as claimed in claim 2, wherein the plurality of sensors (12) are positioned apart from each other in a configuration that surrounds the edible foods (2) within the enclosure (10).

4. The device (100) as claimed in claim 1, wherein the enclosure (10) comprises a top cover (10a) connected to the at least one wall (28) and configured to cover the enclosure (10).

5. The device (100) as claimed in claim 1, wherein the enclosure (10) comprises at least four walls (28a, 28b, 28c, 28d) extending from the base (10b) and at least two walls (28a, 28b) among the at least four walls (28a, 28b, 28c, 28d) are disposed opposite to each other forming a cuboidal enclosure (10).

6. The device (100) as claimed in claim 3, comprises at least one cooling fan (22) mounted to the top cover (10a), wherein the at least one cooling fan (22) is configured to maintain a predefined temperature in a range of 18-27°c within the enclosure (10).

7. The device (100) as claimed in claims 1 and 3, comprises a plurality of conduits (16) arranged on at least one of the top cover (10a) and the at least four walls (28a, 28b, 28c 28d) to spray a fluid onto the edible foods (2), to maintain a predetermined humidity level within the enclosure (10).

8. The device (100) as claimed in claim 1, comprises a control unit (15) communicatively coupled to the plurality of light sources (3), the plurality of auxiliary light sources (3a), the plurality of sensors (12) and the at least one cooling fan (22), wherein the control unit (15) is configured to: receive an input signal from the plurality of sensors (12) corresponding to the light intensity and the temperature values within the enclosure (10); compare the light intensity and the temperature values obtained from the plurality of sensors (12) with a predetermined data; actuate the plurality of light sources (3) and the plurality of auxiliary light sources (3a) to impinge light on the edible foods (2) at a predefined light intensity value; and actuate the at least one cooling fan (22) to maintain the predefined temperature within the enclosure (10); and actuate the plurality of conduits (16) to maintain humidity level within the enclosure (10).

9. The device (100) as claimed in claim 1, wherein the at least one holder (1) comprises at least one strip (25) extending from the at least one holder (1) towards the at least one wall (28) to support the at least one holder (1) within the enclosure (10) at a predetermined distance from the base (10b).

10. The device (100) as claimed in claim 1, wherein the plurality of light sources (3) and the plurality of auxiliary light sources (3a) are configured to emit light (4) at a predefined wavelength and frequency for ripening.

11. The device (100) as claimed in claim 10, wherein the predefined wavelength of the light (4) includes a spectrum of at least one of blue, red and white lights and the wavelengths of light (4) is in a range of 380-750 nm based on a type of light used for illumination.

12. The device (100) as claimed in claim 1, comprises a user interface unit (14), connected to the at least four walls (28a, 28b, 28c 28d), and configured to receive inputs from a user corresponding to one or more values of light intensity and temperature within the enclosure (10) to control a ripening process of edible foods (2).

13. The device (100) as claimed in claim 1, wherein the edible foods (2) include at least one of fruits and vegetables.

14. A system (200) to handle a device (100) for ripening edible foods (2), the system (200) comprises: a column (203); a plurality of platforms (202) extending perpendicularly from the column (203), wherein the plurality of platforms (202) are arranged in a spaced apart configuration; an array (204) of the devices (100) supported on the plurality of platforms (202); each device (100) comprises an enclosure (10) defined with a base (10b) and at least one wall (28) extending from the base (10b), at least one holder (1) connected to the at least one wall (28), wherein the at least one holder (1) is configured to receive at least one of the edible foods (2); a plurality of light sources (3) installed on the at least one wall (28), the plurality of light sources (3) are configured to impinge light on an outer surface of the edible foods (2); and a plurality of auxiliary light sources (3a) arranged within the at least one holder (1), wherein the plurality of auxiliary light sources (3a) is configured to selectively illuminate a portion of edible foods (2) for ripening; at least one robotic arm assembly (206) movably connected to each of the plurality of platforms (202), the at least one robotic arm assembly (206) comprising: a guide member (212) connected each platform (202) of the plurality of platforms (202), wherein the guide member (212) is configured to traverse on the plurality of platforms (202) across the array (204); a robotic arm (240) coupled to the guide member (212), the robotic arm (240) is configured to pick and place each device (100) from the array (204) of devices (100); and a plurality of imaging devices (242) and a plurality of spectral analysis devices are connected to the guide member (212), wherein each of the plurality of imaging devices (242) are configured to capture a data of the devices (100) in the array (204); a centralized control unit (215) communicatively coupled with the array (204) of the devices (100), the centralized control unit (215) is configured to: monitor a ripening state of edible foods (2) within each device (100) in the array (204) by analyzing the data captured by the plurality of imaging devices (242); receive a signal from a plurality of sensors (12) connected to each device (100) in the array (204) corresponding to a light intensity, humidity and a temperature values within the device (100); compare the light intensity, humidity and the temperature values obtained from the plurality of sensors (12) with a predetermined data; and actuate the plurality of light sources (3) and the plurality of auxiliary light sources (3a) to illuminate the light at the predefined light intensity value to facilitate uniform illumination on the edible foods (2) within the enclosure (10). The system (200) as claimed in claim 14, comprises a transportation unit configured to receive the plurality of devices (100) picked by the at least one robotic arm assembly (206) and dispatch the plurality of devices (100) from the system (200). The system (200) as claimed in claim 14, comprises at least one cooling fan (22) arranged at both ends of the array (204) of devices (100) to maintain a predefined temperature of the plurality of devices (100) in the array (204), for example 18-27°c. The system (200) as claimed in claim 14, comprises a user interface unit (14) defined with a display unit, wherein the user interface unit (14) is communicatively connected to the centralized control unit (215) and configured to receive inputs from a user corresponding to one or more values of the light intensity and the temperature of the plurality of devices (100) to control a ripening process within the plurality of devices (100). A method (300) of ripening edible foods (2) using the device (100), the method (300) comprising: receiving by a control unit (15), a first signal from a user interface unit (14) corresponding to one or more values of a light intensity and a temperature; actuating, by the control unit (15), a plurality of light sources (3) and a plurality of auxiliary light sources (3a) based on the signals received from the user interface unit (14); receiving, by the control unit (15), a second signal from a plurality of sensors (12) corresponding to the actuation of the plurality of light sources (3) and the plurality of auxiliary light sources (3 a) at a predefined light intensity and the temperature value within the enclosure (10); controlling, by the control unit (15) the operation of the plurality of light sources (3) and the plurality of auxiliary light sources (3 a) based on the second signal for uniform illumination of light on the at least one of edible food (2); and deactivating, by the control unit (15), the plurality of light sources (3) and the plurality of auxiliary light sources (3a) upon ripening of the at least one of the edible foods (2) positioned within the device (100).