WO2003006901A1

WO2003006901A1 - Ice maker and cooler

Info

Publication number: WO2003006901A1
Application number: PCT/US2002/019812
Authority: WO
Inventors: Willy Van Esch; Scott Summerville
Original assignee: The Coca-Cola Company
Priority date: 2001-07-13
Filing date: 2002-07-12
Publication date: 2003-01-23
Also published as: AU2002316338A1; US20030010054A1; WO2003006901A8

Abstract

An ice-making system (10) may include a bin (14) configured to contain an initial quantity of water and an ice making assembly (42) configured to make ice solely from the initial quantity of water. A conveyor (54) may be configured to transport the ice from the ice making assembly (42) to the bin (14), and a water circuit (11) may be configured to re-circulate the initial quantity of water through the ice making assembly (42).

Description

ICE MAKER AND COOLER

Technical Field

[01] The invention relates generally to a cooler and, more particularly, to an ice maker cooler configured to contain, display, and/or cool products, for example, beverage containers, produce, and the like.

Background

[02] Conventional coolers include a compartment for containing one or more products. Often times, the compartment completely encloses the products such that ice or mechanical cooling mechanisms can maintain the products at a desired temperature below ambient temperature. Other times, the compartment may be open such that the products are prominently displayed. These open compartments typically contain ice to maintain the products at a desired temperature.

[03] In conventional coolers that use ice to maintain products at a desired temperature, the ice is typically loaded manually into a storage compartment together with the products. When ambient air temperature is above freezing, the ice eventually melts and the quantity of ice becomes depleted. If someone monitors the cooler, additional ice may be manually loaded into the storage compartment at an appropriate time. The compartment may include a drain to allow the meltdown water from the ice to exit the compartment. The drain may communicate with a waste water outlet or a waste bucket.

[04] Conventional ice dispensers and cold drink vendors with ice dispensers re-circulate meltdown water by continuously pumping the meltdown water back to an ice maker reservoir. In these systems, the ice produced by the ice maker and the recirculated meltdown water are intended for human consumption in either solid or liquid form. Thus, these systems require a constant water source to continuously generate additional ice and cold drinks.

Summary of the Invention

[05] According to one optional aspect of the invention, an ice maker and cooler apparatus for displaying products may comprise a bin configured to contain ice and the products. The bin may include an access opening configured to receive and display the products. The apparatus may also comprise an ice making assembly configured to make the ice, a conveyor configured to transport ice from the ice making assembly to the bin, and a recirculation system configured to recirculate meltdown water from the ice contained in the bin.

[06] According to another optional aspect of the invention, a system for displaying chilled products may comprise a chamber configured to hold and display the chilled products, an ice making assembly configured to periodically feed a stream of ice particles to the chamber, and a control system configured to sense an amount of water in a region of the ice making assembly and to enable the ice making assembly when the sensed amount of water reaches a predetermined, or threshold, level.

[07] According to yet another optional aspect of the invention, an ice maker and cooler apparatus for displaying products may comprise a housing configured to contain at least one component of the apparatus. The apparatus may also comprise a refrigeration system including a compressor and an evaporator, a bin configured to contain ice and the products, and an ice making chamber having the refrigeration system evaporator therein for making ice. The apparatus may further comprise a first reservoir configured to receive a supply of water from the bin and a second reservoir in fluid communication with the ice making chamber. The apparatus may also comprise a conveyor configured to transport ice from the ice making chamber to the bin and a sensor in the first reservoir for determining when the water level therein is above or below a threshold level; and. A pump may be provided in fluid communication with the first and second reservoirs for pumping water from the first reservoir to the second reservoir when the water level sensed is above said threshold level.

[08] According to another optional aspect of the invention, a method for making ice may comprise loading an ice making system with an initial quantity of water as a sole source of water and making ice from the initial quantity of water. The method may also comprise conveying the ice made from the initial quantity of water to a bin and recirculating meltdown water from the bin. The meltdown water may solely comprise meltdown water from the ice made from the initial quantity of water.

[09] According to still another optional aspect of the invention, an ice- making system may comprise a bin configured to contain an initial quantity of water, an ice making assembly configured to make ice solely from the initial quantity of water, a conveyor configured to transport the ice from the ice making assembly to the bin, and a water circuit configured to re-circulate the initial quantity of water through the ice making assembly.

[10] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Brief Description of the Drawings

[11] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings,

[12] FIG. 1 is a perspective view of an ice maker cooler in accordance with an embodiment of the present invention;

[13] FIG. 2 is a schematic view of an ice maker cooler in accordance with an embodiment of the present invention;

[14] FIG. 3 is a schematic view of a exemplary freezer assembly of the ice maker cooler of FIG. 2; and [15] FIG. 4 is a schematic view of an exemplary refrigerant circuit associated with a freezer assembly of the ice maker cooler of FIG. 2.

Detailed Description

[16] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[17] In accordance with the present invention, an ice maker cooler is provided. Referring to FIGS. 1 and 2, an ice maker cooler 10 may include a housing 12 and a bin 14. The housing 12 may contain mechanical and/or electrical components of the cooler 10. The bin 14 may contain ice and/or products, for example, containers such as beverage containers, produce, and the like. The bin 14 may have an access opening 16, for example, and open top, a side opening, or the like, that facilitates loading of the bin 14 and viewing of the products and/or ice contained in the bin 14.

[18] Referring to FIG. 2, the cooler 10 may include a fluid circuit 11 , for example, a water circuit. The circuit 11 may comprise the bin 14 and a tank 18, for example, a water tank, in fluid communication with the bin 14 via drain line 20. The drain line 20 may comprise a flexible hose, a rigid tube, or the like. It should be appreciated that more than one drain line may provide fluid communication between the bin 14 and the tank 18. The capacity of the tank 18 may be varied according to design criteria, for example, capacity of the circuit 11 , the bin 14, etc. The tank 18 may include a filter (not shown), for example, a metal strainer. The filter may be configured to remove relatively large particles from the water before the water exits the tank 18. The tank 18 may also include a drain port 19 for facilitating periodic draining of the water from the cooler.

[19] The water circuit 11 may also include a first reservoir 22 in fluid , communication with the tank 18. A solenoid valve 24 may be associated with a flow line 26 between the tank 18 and the first reservoir 22. A first sensor 28 may be disposed in the first reservoir 22. The first sensor 28 may comprise, for example, a float switch configured to energize and de-energize the solenoid valve 24 when the water level in the first reservoir 22 is above or below a threshold level. As a result, the flow of water into the first reservoir 22 and the water level in the first reservoir 22 may be controlled. The first reservoir 22 may be associated with a pump 34.

[20] The water circuit 11 may further include a second reservoir 32 in fluid communication with the first reservoir 22. The pump 34 may be associated with a flow line 36 providing the fluid communication between the first and second reservoirs 22, 32. The pump 34 may be configured to pump water from the first reservoir 22 to the second reservoir 32.

[21] A second sensor 38 may be disposed in the first reservoir 22.

The second sensor 38 may comprise, for example, a float switch configured to energize and de-energize the pump 34 when the water level in the first reservoir 22 is above or below a threshold level. As a result, the flow of water from the first reservoir 22 to the second reservoir 32 may be controlled.

[22] A filter 40 may be associated with the flow line 36 between the first and second reservoirs 22, 32. The filter 40 may reduce the impurities in the water being pumped to the second reservoir 32 and subsequent components of the cooler 10 including the water circuit 11. The filter 40 may eliminate, for example, small particles and color from the water. The filter 40 may comprise, for example, a twenty micron filter.

[23] The cooler 10 may comprise a freezer assembly, for example, an ice maker assembly 42. The water circuit 11 may comprise portions of the ice maker assembly 42. A flow line 44 may provide fluid communication between the second reservoir 32 and the ice maker assembly 42. A sensor assembly 46 may be disposed in the second reservoir 32. The sensor assembly 46 may comprise, for example, a float valve and/or a float switch. The sensor assembly 46 may be configured to control the level of water in the second reservoir 32. For example, a mechanical float valve may shut off the inlet 48 to the second reservoir 32 when the water level in the second reservoir reaches a predetermined maximum level. Additionally or altematively, a float may be configured to disable operation of the cooler 10 when the water level in the second reservoir 32 is below a threshold level.

[24] Referring to FIG. 3, the ice maker assembly 42 may comprise an inlet 50 configured to receive water from the second reservoir 32 via flow line 44. The ice maker assembly 42 may also include a freezing cylinder 52 and a conveyor, for example, an auger 54. The freezing cylinder 52 may be concentric with and/or surround the auger 54. The auger 54 may comprise, for example, stainless steel.

[25] The auger 54 may be rotatably held by bearings 64 and may be configured to rotate counter-clockwise relative to the freezing cylinder 52. The auger 54 may be driven by a motor 56, for example, a direct drive gear motor optionally including a gear reducer 58. The motor 56 may be connected to the auger 54 by any well-known coupling 60. A water seal 62 may be provided to prevent water from entering the motor 56.

[26] The freezer assembly 42 may also comprise an ice breaker 66 disposed at an output end 68 of the auger 54 and freezing cylinder 52. The ice breaker 66 may include teeth (not shown) configured to crack ice as the ice is forced to the outlet end 68 by rotation of the auger 54. The freezer assembly 42 may further include a chute 70, for example, an inverted funnel spout, disposed adjacent to the ice breaker 66 at the output end 68 of the auger 54. The chute 70 may be spaced vertically above the bin 14 and configured to distribute ice to the bin 14. The shape and size of the chute 70 and the bin 14, as well as the spacing between them, may be varied as desired.

[27] Referring to FIG. 4, the freezing cylinder 52 may be associated with an optional refrigerant circuit, for example, exemplary refrigerant circuit 72. The exemplary circuit 72 may include a compressor 74, a condenser 76, a drier filter 78, and a capillary tube 80. In operation, a refrigerant, for example, a hot gas refrigerant, may be discharged from the compressor 74 toward the condenser 76. After being cooled down at the condenser 76, the gas condenses into liquid. The liquid may pass through the drier filter 78 and continue through the capillary tube 80, where the liquid loses some of its pressure such that its pressure and temperature are lowered. The refrigerant may eventually enter an evaporator coil 84 wrapped around an inner tube 86 of the freezing cylinder 52. As water is fed to an interior of inner tube 86, heat exchange may take place between the water and the refrigerant in the evaporator coil 84, causing the refrigerant to boil off and evaporate, i.e., changing from liquid to vapor. The vapor refrigerant may pass through a suction accumulator 88 and through a suction line 90 before being sucked into the compressor 74 to be re-circulated.

[28] The cooler 10 may also comprise a controller 100 in electrical communication with one or more components of the cooler 10, for example, the sensors 28, 38, the sensor assembly 46, the pump 34, the solenoid valve 24, the freezer assembly 42, and/or the motor 56. The controller 100 may be configured to control operation of one or more of these and other components. The controller 100 may also be configured to receive operator inputs so as accommodate user-defined changes in sensor sensitivity, pump speed, freezer temperature, and the like.

[29] Referring again to FIG. 2, the ice maker cooler 10 may operate in a self-contained manner. That is, the cooler 10 and the water circuit 11 do not need to be connected to a water supply line. An initial quantity of water may be supplied to the cooler and that quantity may be re-circulated through a closed-loop water circuit. The initial quantity of water may be removed and replaced periodically.

[30] An initial quantity of water in a liquid and/or frozen state may be manually loaded into the bin 14 of the cooler 10. In either case, the water or meltdown water from the ice will eventually flow from the bin 14 to the water tank 18. The initial quantity of water may be measured prior to loading so as not to exceed the capacity of the cooler 10. Alternatively the tank 18 may be sized in accordance with a capacity of the cooler 10. Thus, an unmeasured quantity of water may be poured into the bin 14. The water will drain into the tank 18 until the tank is filled, at which time water will back up into the bin 14. Pouring of water may cease and excess water in the bin 14 may be drained, for example, by opening the tank drain port 19 until the bin is empty.

[31] If the first sensor 28 senses a water level in the first reservoir 22 less than a threshold level, the controller 100 may control operation of the solenoid valve 24 to allow water to flow from the tank 18 to the first reservoir 22. If the first sensor 28 senses a water level in the first reservoir 22 greater than a threshold level, the controller 100 may control operation of the solenoid valve 24 to prevent water from flowing from the tank 8 to the first reservoir.

[32] If the second sensor 38 senses a water level in the first reservoir

22 greater than a threshold level, the controller 100 may control operation of the pump 34 to pump water from the first reservoir 22 to the second reservoir 32. The water may pass through a filter 40 while traveling to the second reservoir 32. If the second sensor 38 senses a water level in the first reservoir less than a threshold level, the controller 100 may prevent water from being be pumped from the first reservoir 22 to the second reservoir 32.

[33] Optionally, the pump 34 may operate as long as the first reservoir 22 contains some amount of water. The sensor assembly 46 may open the inlet 48 as long as the assembly 46 senses a water level in the second reservoir 32 below a threshold level, thereby allowing water pumped from the first reservoir 22 to enter the second reservoir 32. If the sensor assembly 46 senses a water level above a threshold level, the assembly 46 may close the inlet 48. For example, the assembly may comprise a mechanical valve. Although the pump 34 may continue to operate, the pressure supplied by the pump may not be great enough to open the inlet 48.

[34] If the sensor assembly 46 senses a water level in the second reservoir 32 less than a threshold level, the controller 100 may stop operation of the cooler. Additionally or alternatively, the sensor assembly 46 may sense an inadequate water quality, for example, excessively soft water, and the controller 100 may consequently stop operation of the cooler.

[35] As shown in FIG. 2, the water may enter the freezer assembly

42 by way of an inlet 50 disposes at a bottom end of a vertically-arranged freezing cylinder 52. Refrigerant in the evaporator coil 84 causes water near the inner tube 86 of the freezing cylinder 52 to freeze into ice, for example, flakes of ice. The conveyor or auger 54 carriers the ice upward along the refrigerated inner wall of the inner tube 86. As a result, the ice gets progressively thicker and harder as it travels vertically through the freezer assembly 42.

[36] As the auger 54 forces the ice toward the outlet end 68, the ice may engage the ice breaker 66. The auger 54 and the ice breaker 66 may cooperate to compact and crack the ice. The ice breaker 66 may cause the ice to lose any excess water content such that very hard, dry bits of ice may result.

[37] The ice may eventually be forced from the auger 54 and into the distributor spout 70. The spout 70 may be configured to receive the ice forced through the outlet end 68 by the auger 54 and to direct the ice into the bin 14. As the spout 70 may be positioned vertically above the bin 14, consumers may see the falling ice being directed from the spout 70 to the bin 14. The audible and visual effects of the falling ice may attract the attention of consumers.

[38] Products 110 may be loaded into the bin 14 at any time. As the ice is directed into the bin 14 from the spout 70, the ice may contact and/or at least partially cover the products 110. The visual effect of the products 110 mixed among the ice in the bin 14 may enhance the perception of an ice-cold refreshment.

[39] After being in contact with ambient air, the ice may eventually melt. The meltdown water from the ice may be collected back into the tank 18 and re-circulated through the water circuit as just described.

[40] It should be appreciated that any one or more of the tank 18, the first reservoir 22, and the second reservoir 32 may be referred to as a reservoir assembly.

[41] It should also be appreciated that the cooler 10 may be equipped with a drain in communication with a wastewater line or a waste bucket. Such a drain may facilitate emptying of the water at desired intervals. At such time, fresh water and/or fresh ice may be loaded into the cooler 10 by way of, for example, the bin 14.

[42] It should further be appreciated that the cooler 10 may equipped with other devices to attract the attention of consumers. For example, lights and/or movable devices may be associated with the cooler 10. Optionally, a rotating device with internal illumination may be mounted on the top of the spout 70.

[43] While the exemplary embodiment is described with respect to water, it should be appreciated that other liquids may be employed in the cooler 10. For example, a liquid combination of water and an icing agent may be employed to raise the freezing temperature of the liquid above that of water.

[44] It should be appreciated that the controller 100 may comprise a general purpose or special purpose computer, a programmed microprocessor or microcontroller and peripheral integrated circuit elements, an ASIC or other integrated circuit, a hardware electronic or logic circuit such as a discrete element circuit, a programmable logic device such as a PLD, PLA, FPGA or PAL, or the like. In general, any device on which a finite state machine capable of implementing the operation of the cooler 10 can be used to implement the controller functions of this invention.

[45] It will be apparent to those skilled in the art that various modifications and variations can be made to the ice maker cooler without departing from the scope or spirit of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims and their equivalents.

Claims

ClaimsWhat is claimed is:

1. An ice maker and cooler apparatus for displaying products, comprising: a bin configured to contain ice and the products, the bin comprising an access opening configured to receive and display the products; an ice making assembly configured to make the ice; a conveyor configured to transport ice from the ice making assembly to the bin; and a recirculation system configured to recirculate meltdown water from the ice contained in the bin.

2. The apparatus of claim 1 , further comprising a chute having an input end in communication with the conveyor and an output end configured to deliver the ice into the bin, wherein the chute is configured to deliver ice through the access opening and onto at least one of said products.

3. The apparatus of claim 1 further comprising: a reservoir assembly configured to receive meltdown fluid from the bin; and a controller, the controller configured to operate the ice making assembly when a level of fluid in the reservoir assembly exceeds a threshold level.

4. The apparatus of claim 1 , wherein the conveyor comprises a rotary auger and the ice making assembly comprises an ice making chamber, and wherein at least a portion of the rotary auger is in the ice making chamber.

5. The apparatus of claim 5, further comprising an ice breaking device at an output end of the rotary auger adjacent to an output end of the ice making chamber.

6. A system for displaying chilled products, comprising: a chamber configured to hold and display the chilled products; an ice making assembly configured to periodically feed a stream of ice particles to the chamber; and a control system configured to sense an amount of water in a region of the ice making assembly and to enable the ice making assembly when the sensed amount of water reaches a threshold level.

7. The system of claim 6, wherein the chamber comprises an opening configured to receive the stream of ice particles, and wherein the stream of ice particles is visible to a consumer through the opening of the chamber.

8. The system of claim 7, wherein the opening comprises an open top in the chamber, the open top being configured to accommodate loading the bin with chilled products and viewing at least one of the chilled products and ice in the bin.

9. The system of claim 7, said region of the ice making assembly comprises a reservoir assembly configured to receive meltdown fluid from the chamber.

10. The system of claim 9, wherein the control system comprises: a controller; and a sensor associated with the reservoir assembly, the sensor being configured to sense the level of fluid in the reservoir assembly and to communicate with the controller.

11. An ice maker and cooler apparatus for displaying products, comprising a housing configured to contain at least one component of the apparatus; a refrigeration system including a compressor and an evaporator; a bin configured to contain ice and the products; an ice making chamber having the refrigeration system evaporator therein for making ice; a first reservoir configured to receive a supply of water from the bin; a second reservoir in fluid communication with the ice making chamber, the second reservoir being configured to supply water to the evaporator for making the ice; a conveyor configured to transport ice from the ice making chamber to the bin; a sensor in the first reservoir for determining when the water level therein is above or below a threshold level; and a pump in fluid communication with the first and second reservoirs for pumping water from the first reservoir to the second reservoir when the water level sensed is above said threshold level.

12. The apparatus of claim 11 , further comprising: a sensor in the second reservoir for determining when water therein is above or below a threshold quantity; and a controller associated with the sensor in the second reservoir, the controller being configured to disable the apparatus when the water quantity sensed is below the threshold quantity.

13. The apparatus of claim 11 , wherein the supply of water comprises an initial quantity of water manually introduced into the bin.

14. The apparatus of claim 12, wherein the initial quantity of water comprises at least one of ice and liquid.

15. The apparatus of claim 12, wherein the initial quantity of water comprises a sole water supply of the apparatus, and wherein the initial quantity of water is re-circulated by the apparatus.

16. A method for making ice, comprising: loading an ice making system with an initial quantity of water as a sole source of water; making ice from the initial quantity of water; conveying the ice made from the initial quantity of water to a bin; and recirculating meltdown water from the bin, the meltdown water solely comprising meltdown water from the ice made from the initial quantity of water.

17. The method of claim 16, further comprising: sensing a level of water in a reservoir associated with the ice making system; and controlling operation of the ice making system in response to the sensed level of water in the reservoir.

18. The method of claim 17, wherein said controlling operation comprises disabling the ice making system when the sensed level of water is below a threshold level.

19. An ice-making system, comprising: a bin configured to contain an initial quantity of water; an ice making assembly configured to make ice solely from the initial quantity of water; a conveyor configured to transport the ice from the ice making assembly to the bin; and a water circuit configured to re-circulate the initial quantity of water through the ice making assembly.

20. The system of claim 19, further comprising: a sensor configured to sense a level of water in a reservoir associated with the ice making system; a controller configured to control operation of the ice making system in response to the sensed level of water in the reservoir; and wherein said controller is configured to disable the ice making system when the sensed level of water is below a threshold level.