Apparatus And Method For Thermoelectric Cooling Of Comestible Products
20200173697 ยท 2020-06-04
Inventors
Cpc classification
F25B21/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
A23G9/22
HUMAN NECESSITIES
International classification
F25B21/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
A23G9/22
HUMAN NECESSITIES
Abstract
Disclosed herein are methods, systems, and apparatuses for dispensing comestible products that are frozen or partially frozen by thermoelectric cooling. The systems and apparatuses may function for long periods of time without cleaning. The systems and apparatuses may be used in producing soft-serve and frozen beverage products including soft-serve ice cream, frozen yogurt, smoothies, acai mix, and other foods capable of being made into soft-serve products, and frozen beverages, slush, margaritas, granita, and the like. One or more thermoelectric cooling elements may be used to quickly and efficient freeze-down small batches of product. A lateral extrusion mechanism may be used to effect movement of the thermoelectric cooling element toward and away from the product. When the product is contained within a deformable container, a vertical extrusion mechanism may be used to effect dispensing of the product from the container into a desired receptacle.
Claims
1. An apparatus for dispensing a comestible product, the apparatus comprising: a cooling chamber, wherein the cooling chamber is adapted to receive a deformable container within which the comestible product is stored; a product conduit having an upper end and a terminal end; at least one thermoelectric cooling element; and an extrusion mechanism configured to effect dispensing of the comestible through the product conduit to an outlet at the terminal end of the product conduit.
2. The apparatus of claim 1, further comprising a heat sink, wherein the at least one thermoelectric cooling element is positioned between the heat sink and the product conduit.
3. The apparatus of claim 1, wherein the at least one thermoelectric cooling element includes a first thermoelectric cooling element and a second thermoelectric cooling element, the first and second thermoelectric cooling elements being spaced apart from one another so as to form the product conduit therebetween.
4. The apparatus of claim 3, further comprising a first heat sink and a second heat sink, wherein the first thermoelectric cooling element is positioned between the first heat sink and the product conduit and the second thermoelectric cooling element is positioned between the second heat sink and the product conduit.
5. The apparatus of claim 1, wherein the extrusion mechanism is a lateral extrusion mechanism configured to contact and effect movement of the at least one thermoelectric cooling element toward and away from the product conduit, such that the thermoelectric cooling contacts and at least partially compresses the deformable container, thereby reducing the volume of the deformable container and extruding the comestible product under increased pressure through the product conduit to an outlet at the terminal end of the product conduit.
6. The apparatus of claim 5, wherein the lateral extrusion mechanism is a spring or plunger.
7. The apparatus of claim 1, wherein the extrusion mechanism is a vertical extrusion mechanism configured to at least partially compress the deformable container, thereby reducing the volume of the deformable container and extruding the comestible product under increased pressure through the product conduit to an outlet at the terminal end of the product conduit.
8. The apparatus of claim 7, wherein the vertical extrusion mechanism is a plunger or roller.
9. The apparatus of claim 1, wherein the at least one thermoelectric cooling element is capable of cooling the cooling chamber to 0 degrees Fahrenheit or less within 20 seconds of starting the apparatus, and is further capable of cooling the comestible product to 24 degrees Fahrenheit or less within 60 seconds of starting the apparatus.
10. The apparatus of claim 1, wherein: the apparatus does not comprise a compressor or condenser; or the apparatus has a total weight of 35 pounds or less and a total volume of 3 cubic feet or less.
11. The apparatus of claim 1, wherein the deformable container is disposable and contains a single serving of the comestible product.
12. A method for dispensing a comestible product, the method comprising: introducing a comestible product into a cooler chamber of a dispensing apparatus, the dispensing apparatus comprising at least one thermoelectric cooling element; and operating an extrusion mechanism of the dispensing apparatus to effect dispensing of the comestible product through the product conduit to an outlet at a terminal end of the product conduit.
13. The method of claim 12, wherein the comestible product is stored within a deformable container.
14. The method of claim 12, wherein operating the extrusion mechanism comprises operating a lateral extrusion mechanism to contact and effect movement of the at least one thermoelectric cooling element toward and away from the product conduit, such that the thermoelectric cooling contacts and at least partially compresses the deformable container, thereby reducing the volume of the deformable container and extruding the comestible product under increased pressure through the product conduit to an outlet at the terminal end of the product conduit.
15. The apparatus of claim 12, wherein operating the extrusion mechanism comprises operating a vertical extrusion mechanism to at least partially compress the deformable container, thereby reducing the volume of the deformable container and extruding the comestible product under increased pressure through the product conduit to an outlet at the terminal end of the product conduit.
16. The method of claim 12, wherein the at least one thermoelectric cooling element cools the cooling chamber to 0 degrees Fahrenheit or less within 20 seconds of starting the apparatus, and is further capable of cooling the comestible product to 24 degrees Fahrenheit or less within 60 seconds of starting the dispensing apparatus.
17. The method of claim 16, wherein the comestible product is at a temperature of 50 degrees Fahrenheit or more prior to the introducing step.
18. An apparatus for dispensing a comestible product, the apparatus comprising: a cooling chamber, wherein the cooling chamber is adapted to receive a deformable container within which the comestible product is stored; and at least one thermoelectric cooling element located in the cooling chamber, wherein the at least one thermoelectric cooling element is capable of cooling the cooling chamber to 0 degrees Fahrenheit or less within 20 seconds of starting the apparatus, and is further capable of cooling the comestible product to 24 degrees Fahrenheit or less within 60 seconds of starting the apparatus.
19. The apparatus of claim 18, wherein the at least one thermoelectric cooling element includes first and second thermoelectric cooling elements spaced apart from one another, each of the first and second thermoelectric cooling elements having a semicircular cross-section so as to form a circular product conduit therebetween.
20. The apparatus of claim 19, further comprising an agitator disposed within the product conduit between the first and second thermoelectric cooling elements for mixing the comestible product in the cooling chamber.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The foregoing and other features of the present disclosure will become more fully apparent from the following description, taken in conjunction with the accompanying drawings. These drawings depict only several embodiments in accordance with the disclosure and are, therefore, not to be considered limiting of its scope. The disclosure will be described with additional specificity and detail through use of the accompanying drawings.
[0021] In the drawings:
[0022]
[0023]
[0024]
[0025]
[0026]
[0027]
[0028]
DETAILED DESCRIPTION
[0029] With reference to
[0030] Turning to
[0031] The comestible product can be introduced directly into the cooling chamber (e.g., by pouring the comestible product into the cooling chamber). Alternatively, the comestible product may be stored in a container (e.g., a deformable container of the type described in more detail herein), and the container may be introduced into the cooling chamber. When the comestible product is stored in a container that is introduced into the cooling chamber, the need to clean or sanitize the cooling chamber after dispensing is alleviated or eliminated. In this regard, the container may be a single-use disposable container, such as a single-use pod or cartridge. The disposable and enclosed nature of the container may thereby obviate the need to clean or sanitize the cooling chamber after dispensing. The comestible product may be a shelf-stable product and may be stored and introduced into the dispensing apparatus at a temperature of 50 degrees Fahrenheit or more.
[0032] In apparatus 100, the thermoelectric cooling elements generally have a hot side and a cold side. In
[0033] The thermoelectric cooling elements 140, 142 may be configured to bring the temperature of the cooling chamber 102 to below the freezing point of the comestible product to form a frozen, comestible product. In particular, thermoelectric cooling elements 140, 142 may be configured to bring the temperature of the product conduit 150 to below the freezing point of the comestible product to form a frozen, comestible product. The thermoelectric cooling elements 140, 142 allow for rapid freeze-down times for the comestible product, including freeze-down times that are much quicker than conventional soft serve and frozen beverage machines or batch freezers that require from about 5 to about 15 minutes for typical soft-serve and barrel frozen beverage machines or batch freezers, and over 30 minutes for frozen beverage or granita machines with a plastic bowl. The thermoelectric cooling elements are generally capable of cooling the product to any desired temperature (e.g., to a frozen or semi-frozen state) for effective dispensing of the particular product. In a preferred embodiment, the thermoelectric cooling elements are capable of cooling the comestible product to 24 degrees Fahrenheit or less within 60 seconds of starting the dispensing apparatus. Put another way, through the use of thermoelectric cooling, the dispensing apparatus is capable of cooling a shelf-stable comestible product to 24 degrees Fahrenheit within 60 seconds of introduction of the product to the dispensing apparatus. In other embodiments, such as when the product to be dispensed is a frozen beverage product, the product may be cooled by the one or more thermoelectric cooling elements to a greater temperature depending on factors such as gas, brix, and the like, although the frozen beverage product may generally be cooled to a temperature of 32 degrees Fahrenheit or less within 60 seconds of starting the apparatus. Relatedly, in a preferred embodiment, the thermoelectric cooling elements are capable of cooling the cooling chamber to 0 degrees Fahrenheit or less within 20 seconds of starting the dispensing apparatus.
[0034] In certain embodiments, such as that depicted in
[0035] When the comestible product has been cooled to a sufficient temperature for dispensing, the comestible product may be dispensed from the dispensing apparatus in a variety of ways. In one an embodiment, a vertical extrusion mechanism 120 may be employed. The vertical extrusion mechanism 120 may be used to effect dispensing of the comestible product through the product conduit 150 from the first or upper end 152 to the second or terminal end 154 thereof. In particular, the vertical extrusion mechanism 120 may be used to effect dispensing of the comestible product to and/or through the outlet or opening 110 at the terminal end 154 of the product conduit 150, the opening 110 thereby operating as an outlet for dispensing the comestible product out of the dispensing apparatus and into a desired receptacle (e.g., a cone, cup, or dish). That is, the vertical extrusion mechanism generally effects linear movement of the comestible product parallel to the longitudinal axis of the product conduit and perpendicular to the movement of the lateral extrusion mechanism. The vertical extrusion mechanism may be configured to engage with the comestible product (or, more preferably, with the container in which the comestible product is stored) and effect dispensing of the comestible product through the product conduit. The vertical extrusion mechanism can be any mechanism suitable for effecting dispensing of the comestible product through the product conduit to the nozzle or outlet at the terminal end of the product conduit, such as a plunger or roller. As will be appreciated by those skilled in the art, any mechanism capable of effecting dispensing (e.g., by pushing, pressing, squeezing, pinching, pressurizing, propelling) of the comestible product from the dispensing apparatus is suitable for use as the vertical extrusion mechanism. Simply put, the vertical extrusion mechanism is configured to compress the comestible product (or, more preferably, the container in which the comestible product is stored), thereby reducing its volume and extruding the comestible product under increased pressure.
[0036] As the comestible product is positioned in the product conduit 150 between the thermoelectric cooling elements 140, 142, the thermoelectric cooling elements may be moved toward and away from the product conduit 150 so as to selectively control the amount of cooling. For example, example, one or more lateral extrusion mechanisms 130, 132 can be employed for effecting linear movement of the thermoelectric cooling elements 140, 142 toward and away from the product conduit 150. In this way, the comestible product in the product conduit 150 can be selectively cooled by effecting movement of the thermoelectric cooling elements toward the product conduit (and, in this embodiment, toward one another) using the corresponding. In certain embodiments, the product or, more preferably, its container may include a tag, RFID chip, or similar device containing data readable by the dispensing apparatus that carriers certain information about the product, such as the desired dispensing temperature, and/or desired freeze-down time. In response to reading such data, the dispensing apparatus may selectively control activation of the various components to achieve the desired dispensing parameters, such as controlling activation and/or movement of the thermoelectric cooling elements, the extrusion mechanism(s), or other components of the apparatus. In preferred embodiments, the lateral extrusion mechanisms are operated so that the product conduit and/or the deformable container in which the comestible product is stored receives maximum surface area exposure to the thermoelectric cooling elements. Alternatively, or in addition to, the vertical extrusion mechanisms, the lateral extrusion mechanisms may be used to effect dispensing of the comestible product from the product conduit. For example, the lateral extrusion mechanism may push, press, or otherwise effect movement of the thermoelectric cooling elements toward the product conduit, thereby reducing the volume of the product conduit and/or the deformable container in which the comestible product is stored and effecting dispensing of the comestible product under increased pressure.
[0037] In this exemplary embodiment, movement of each thermoelectric cooling element is effected by its own corresponding lateral extrusion mechanism. Notwithstanding, as will be appreciated by those skilled in the art, any number or combination of thermoelectric cooling elements and lateral extrusion mechanisms may be employed. For example, it is specifically contemplated that a single thermoelectric cooling element could be employed opposite a stationary wall of the cooling chamber, with movement of the thermoelectric cooling element capable toward and away from the product conduit positioned between the stationary wall and movable thermoelectric cooling element. For example, if, in such embodiment, it is desired to use the lateral extrusion mechanism for effecting dispensing of the comestible product, the lateral extrusion mechanism may be operated to cause the thermoelectric cooling elements to push or press against the product conduit (with the stationary wall acting as a pressing force along the other side of the product conduit), thereby reducing the volume of the product conduit and/or the deformable container in which the comestible product is stored and effecting dispensing of the comestible product under increased pressure. That is, the lateral extrusion mechanism generally effects linear movement of the thermoelectric cooling element perpendicular to its face plane and parallel to the longitudinal axis of the product conduit. The lateral extrusion mechanisms can be any mechanism suitable for effecting movement a thermoelectric cooling element toward and away from the product conduit, such as a spring or plunger. As will be appreciated by those skilled in the art, any mechanism capable of effecting movement (e.g., by pushing, pressing) of the thermoelectric cooling element toward and away from the product conduit is suitable for use as the vertical extrusion mechanism. Similar to the vertical extrusion mechanism, the lateral extrusion mechanism may be configured to contact and effect movement of the thermoelectric cooling plate, such that the thermoelectric cooling plate contacts and compresses the comestible product (or, more preferably, the container in which the comestible product is stored), thereby reducing its volume and extruding the comestible product under increased pressure.
[0038] A series of valves (not depicted) may also be included within the cooling chamber. For example, a terminal valve may be included at the terminal end 154 of the product conduit 150. The terminal valve may, alone or in combination with the vertical or lateral extrusion mechanisms, be used to selectively control dispensing of the comestible product, such as the amount of the comestible product that is dispensed or, in the case of a multi-way valve and multiple comestible products, which comestible product is dispensed.
[0039] With reference now to
[0040] In some examples, the comestible product may be a soft serve ice cream mixture or frozen yogurt liquid mixture. The freezable, comestible liquid mixture may be in concentrated form and diluted with water from a water input 170 or may be present ready-to-use when introduced to product conduit 150. Water input 170 may be fluidly coupled to product conduit 150. In this scenario, water from water input 170 may dilute the comestible liquid mixture in a controlled fashion, and water input 170 may include a solenoid valve to accomplish this dilution. The dispensing apparatus may further include an air or gas inlet (not shown) to mix in and create a higher overrun.
[0041] In other examples, the comestible product may be a shelf-stable product that is ready-to-serve, needing only to be cooled prior to dispensing or cooled and removed for consumption. As depicted in
[0042] With reference to
[0043] With continued reference to
[0044] In the alternative embodiment depicted in
[0045] Some differences between the dispenser apparatus and methods described herein and conventional frozen products will be described. The use of thermoelectric cooling elements has the advantages of avoiding the use of some moving parts; avoiding the use of compressors, condensers, and refrigerant and refrigerant lines, which cannot be moved and are commonly susceptible to leaking, corrosion, and cracking and which require highly skilled and certified refrigeration technicians for fixing; increased life; and decreased size, noise, vibration, cost, and required cleaning. Unlike conventional systems, the disclosed dispenser apparatus requires minimal to no routine cleaning or sanitation. Further, the disclosed dispenser apparatus is much smaller and less expensive than conventional systems. For example, the disclosed dispenser apparatus may weigh about 35 pounds or less (including a total weight of 10 pounds or less) and/or have a volume of about 2-3 cubic feet or less (including a total volume of less than 1 cubic foot), which is about 1/10 the size or less of a conventional system. While manufacturing costs for conventional soft serve and frozen beverage machines or batch freezers typically begin at $1,500 and can be considerably greater, the manufacturing costs for the disclosed dispensing apparatus can be $75 or less. The disclosed dispenser apparatus is further capable of rapid freeze-down times of pre-made, shelf-stable products. For example, the disclosed dispenser apparatus may be capable of freeze-down times of from about 30-60 seconds or less, in comparison to conventional systems having freeze-down times of from about 5 to about 15 minutes. In addition, the disclosed dispenser apparatus may be capable of receiving shelf-stable product (e.g., stored and introduced at a temperature of 50 degrees Fahrenheit or more) and cool such product to a suitable dispensing temperature (e.g., to 24 degrees Fahrenheit or less) in less than 60 seconds, whereas conventional systems are only capable of cooling such shelf-stable product to a suitable dispensing temperature in over 5 minutes. The disclosed dispensing apparatus thus obviates the need to transport and store product at low temperatures, thereby reducing transport and storage costs. As a result of the rapid freeze-down times achievable, the disclosed dispensing apparatus may be operable in a non-continuous batch mode, which requires the apparatus to only be running when product is desired to be dispensed. In comparison, conventional machines or freezers must typically be operated in continuous on demand modes, which requires the system to be constantly running and results in undesirable inefficiencies. The disclosed dispenser apparatus does not require many of the bulky and expensive components required by conventional systems, such as compressors, condensers, refrigerant lines, or refrigerants such as Freon. The disclosed dispensing apparatus may also be devoid of any augers, beater, or blades as will typically be found in conventional machines or freezers. The disclosed dispensing apparatus may likewise be devoid of any O-rings, gaskets, or other seals as will typically be found in conventional machines or freezers. Finally, the disclosed dispenser may have a significantly lower heat output and/or electrical consumption than conventional machines or freezers.
[0046] All directional references (e.g., proximal, distal, upper, lower, upward, downward, left, right, lateral, longitudinal, front, back, top, bottom, above, below, vertical, horizontal, radial, axial, clockwise, and counterclockwise) are only used for identification purposes to aid the reader's understanding of the present invention, and do not create limitations, particularly as to the position, orientation, or use of the invention. Connection references (e.g., attached, coupled, connected, and joined) are to be construed broadly and may include intermediate members between a collection of elements and relative movement between elements unless otherwise indicated. As such, connection references do not necessarily infer that two elements are directly connected and in fixed relation to each other. The exemplary drawings are for purposes of illustration only and the dimensions, positions, order and relative sizes reflected in the drawings attached hereto may vary.
[0047] The above specification, examples and data provide a description of the structure and use of exemplary embodiments of the invention as defined in the claims. Although various embodiments of the claimed invention have been described above with a certain degree of particularity, or with reference to one or more individual embodiments, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the spirit or scope of the claimed invention. Other embodiments are therefore contemplated. It is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative only of particular embodiments and not limiting. Changes in detail or structure may be made without departing from the basic elements of the invention as defined in the following claims.