Abstract:
A beverage dispenser with an improved component configuration for enhancing serviceability as well as increasing both the beverage dispensing capacity and the quantity of beverage dispensed at a cooler temperature while maintaining a compact size. The beverage dispenser includes a housing defining a cooling chamber having a cooling fluid contained therein, a water line, a product line, a rechill line substantially submerged within the cooling fluid, a carbonator within the cooling chamber coupled with the water line and a carbon dioxide gas source, dispensing valves mounted on the housing and coupled to the product lines and to at least one of the rechill line and the water line to deliver a beverage, and a refrigeration unit for cooling the cooling fluid. The refrigeration unit includes an evaporator coil substantially submerged within the cooling fluid. The evaporator coil, a one piece unit, includes a substantially concentric coil defined by an outer coil section and an inner coil section that is disposed within and substantially offset from the outer coil section for forming a uniformly distributed slab of frozen cooling fluid. The beverage dispenser includes a component configuration for enhancing serviceability including a mounting bracket for facilitating removal and attachment of component parts to the beverage dispenser without requiring an accompanying mounting screw to be separated from the beverage dispenser.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention generally relates to beverage dispensers and, more particularly, but not by way of limitation, to a beverage dispenser with an improved component configuration which increases both the beverage dispensing capacity and the quantity of beverage dispensed at a cooler temperature.  
           [0003]    2. Description of the Related Art  
           [0004]    Self-service beverage dispensers are growing in popularity and availability. More people than ever before enjoy today&#39;s convenience of selecting a beverage of choice from a beverage dispenser. By placing a cup accordingly and activating a valve, the beverage dispenser dispenses a desired drink into the cup at a preset rate and at a desired temperature, such as the industry standard of less than 42° F.  
           [0005]    Beverage dispensers introduced into new commercial settings must compete with other products for limited shelf space. Accordingly, there is a demand to design compact beverage dispensers, which can sufficiently serve a large number of customers. Consequently, compact designs featuring beverage dispensers with smaller and, thus, less effective internal refrigeration units compromise the ability to serve large numbers of customers beverages below the standard of 42° F. Ultimately, designers of compact beverage dispensers identified a need to increase the cooling efficiency of refrigeration units to accommodate large numbers of customers.  
           [0006]    U.S. Pat. No. 5,368,198, which issued Nov. 29, 1994 to Goulet, discloses a beverage dispenser that attempts to combine compactness with increased beverage dispensing capacity. In operation, a refrigeration unit cools a cooling fluid within a cooling chamber so that the cooling fluid freezes in a slab about the refrigeration unit&#39;s evaporator coil, which is set within the cooling chamber. An agitator motor drives an impeller via a shaft to circulate unfrozen cooling fluid about the cooling chamber. Proper circulation requires a steady flow of the unfrozen cooling fluid from underneath the frozen cooling fluid slab, around its sides, over its top, and back through its center. Circulation of the unfrozen cooling fluid along this described path is essential to the heat transfer process which produces cool drinks and increases beverage dispensing capacity. Such circulation provides for the heat transfer between unfrozen cooling fluid and, relatively warmer, product, water, and carbonated water lines positioned within the cooling chamber.  
           [0007]    Specifically, the unfrozen cooling fluid receives heat from the product and water lines as well as, in part, from the carbonated water line and delivers that heat to the frozen cooling fluid slab as it circulates about the cooling chamber. As such, the frozen cooling fluid melts to dissipate the heat from the product, water, and carbonated water so that a resulting cold beverage is dispensed as the cooled product and carbonated water or water act to form the desired drink. Unfortunately, the carbonated water line of the beverage dispenser disclosed in U.S. Pat. No. 5,368,198 fails to provide for the total cooling of carbonated water exiting the beverage dispenser&#39;s carbonator. In particular, by being exposed over time to the warmer surrounding atmosphere, a segment of the carbonated water line extending outside the bath of cooling fluid is subject to warming in that there is no desired heat exchange with the cooling fluid along the segment which diminishes the overall cooling efficiency of the beverage dispenser.  
           [0008]    In addition, U.S. Pat. No. 5,368,198 features an evaporator coil consisting of two pieces bused together whereby a series of inner and outer coil sections reside along the same horizontal plane. Accordingly, a resulting frozen slab will bulge around the area where the inner and outer coil sections lie in the same horizontal plane such that unfrozen cooling fluid will encounter great difficulty in flowing through the channel defined by the hollowed interior portion of the slab. Thus, such improperly distributed bulges would greatly hinder or completely stop the free-flow of cooling fluid either by creating an undesirably narrow channel whereby cooling fluid could not satisfactorily flow therethrough or, in some cases, by completely freezing over the channel. In the same manner, bulges can completely freeze up an entire beverage dispenser by allowing the frozen slab of cooling fluid to grow and run into the walls of a cooling chamber. Such encumbrances acting against the free-flow of unfrozen cooling fluid thus diminishes the overall cooling efficiency of a beverage dispenser.  
           [0009]    Accordingly, there is a long felt need for a compact beverage dispenser which occupies very little shelf space and permits the maximum transfer of heat between the product, water, and carbonated water lines and the unfrozen cooling fluid, thereby increasing cooling efficiency and, ultimately, drink dispensing capacity.  
         SUMMARY OF THE INVENTION  
         [0010]    In accordance with the present invention, a beverage dispenser with an improved component configuration includes a housing defining a cooling chamber having a top and a bottom portion as well as a cooling fluid contained therein. The beverage dispenser includes a water line substantially submerged within the cooling fluid and coupled with a water source and a carbonator disposed within the cooling chamber and coupled with the water line and a carbon dioxide gas source. The beverage dispenser further includes a rechill line substantially submerged within the cooling fluid and coupled with the carbonator. Additionally, the beverage dispenser includes product lines, substantially submerged within the cooling chamber and coupled with a product source. Thus, a supply of chilled water, chilled carbonated water, and chilled product necessary for the formation of a desired drink by the beverage dispenser are provided by the carbonator, the water line, the rechill line, and the product lines.  
           [0011]    Moreover, the rechill line and the water line are positioned in cooperation with each other for directing the flow of cooling fluid about the cooling chamber. To facilitate placement in the cooling chamber, the rechill line may assume a serpentine configuration formed by channels that direct the flow of cooling fluid about the cooling chamber.  
           [0012]    The beverage dispenser still further includes dispensing valves mounted on the housing. The dispensing valves are coupled to the product lines and to at least one of the rechill lines and the water line to deliver a beverage.  
           [0013]    A refrigeration unit including an evaporator coil positioned substantially centrally within the cooling chamber provides cooling for the cooling fluid. The evaporator coil, a one piece unit, includes a substantially concentric coil defined by an outer coil section and an inner coil section that is disposed within and substantially offset from the outer coil section. The substantially offset coils are an improved design to uniformly distribute the frozen slab that freezes about the evaporator coil so as to ultimately allow for the optimal flow of unfrozen cooling fluid around the frozen cooling fluid slab and through a channel defined by a hollowed interior portion of the slab. In particular, each inner and outer coil section develops a frozen cooling portion that freezes with an adjacent portion thus decreasing the formation time for creating a slab of frozen cooling fluid.  
           [0014]    Furthermore, to ensure that the cooling fluid freezes to form a uniform slab with maximum cooling effect, an optimal horizontal distance and an optimal vertical distance between adjacent inner and outer coil sections, respectively, are provided. To further enhance heat transfer, the inner coil section and/or outer coil section may be substantially parallel to the top and bottom sections of the cooling chamber. The evaporator coil may also be configured with a rough outer surface texture, a thin wall thickness, and/or a material composition that best facilitates maximum heat transfer about the evaporator coil.  
           [0015]    The beverage dispenser component configuration for enhancing serviceability includes a housing constructed in one seamless integral piece for preventing objects from falling therein, a housing platform mounted atop the housing, a compressor deck platform coupled with the housing platform to form one continuous surface that mounts atop the housing, and a compressor secured to the compressor deck platform. The housing includes a rounded configuration for enhancing serviceability. Moreover, the compressor deck platform is configured to be removed from and inserted with the housing platform.  
           [0016]    The compressor deck platform includes an electronic components housing assembly secured atop the compressor deck platform and an agitator motor secured atop the compressor deck platform. The electronic components housing assembly and/or agitator motor are secured to the compressor deck platform by a mounting bracket and a mounting screw cooperatively engaged with the mounting bracket. The mounting bracket facilitates removal and attachment to the beverage dispenser without requiring the accompanying mounting screw to be separated from the beverage dispenser. The mounting bracket forms at least one slide aperture, each aperture including a removal portion which is wide enough to allow the head of the mounting screw to pass through the mounting bracket and a mounting portion which is narrow enough to keep the head of the mounting screw above the mounting bracket to secure the mounting bracket onto the beverage dispenser.  
           [0017]    It is therefore an object of the present invention to provide a beverage dispenser with an improved component configuration for increasing both the beverage dispensing capacity and the quantity of beverage dispensed at a cooler temperature while maintaining a compact size.  
           [0018]    It is a further object of the present invention to provide a beverage dispenser with enhanced cooling efficiency for maximum heat transfer between the unfrozen cooling fluid and the evaporator coil, the product line, the water line, and the carbonated water line.  
           [0019]    It is still a further object of the present invention to provide a beverage dispenser including a component configuration for enhancing serviceability.  
           [0020]    Still other objects, features, and advantages of the present invention will become evident to those skilled in the art in light of the following. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0021]    [0021]FIG. 1 is a perspective view illustrating a beverage dispenser featuring an improved cooling chamber configuration.  
         [0022]    [0022]FIG. 2 is an exploded view illustrating the beverage dispenser.  
         [0023]    [0023]FIG. 3 is a top elevation view illustrating the preferred embodiment of an evaporator coil featured within the improved cooling chamber configuration.  
         [0024]    [0024]FIG. 4 is a perspective view illustrating the preferred embodiment of an evaporator coil featured within the improved cooling chamber configuration.  
         [0025]    [0025]FIG. 5 is a top elevation view illustrating various components of the beverage dispenser positioned on a platform that is situated above the cooling chamber. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0026]    As required, detailed embodiments of the present invention are disclosed herein, however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. The figures are not necessarily to scale, and some features may be exaggerated to show details of particular components or steps.  
         [0027]    As illustrated in FIGS.  1 - 5 , beverage dispenser  10  includes a housing  11 , a refrigeration unit  13 , and dispensing valves  16 A-C. Housing  11 , in turn, includes a front wall  15 A, a rear wall  15 B, side walls  15 C and D, and a bottom  15 E that define a cooling chamber  12 . Furthermore, cooling chamber  12  contains a cooling fluid, which is typically water.  
         [0028]    Product lines  71 - 73  reside in front of cooling chamber  12  and mount therein using any suitable mounting means. Each of product lines  71 - 73  includes an inlet that communicates with a product source (not shown). Product lines  71 - 73  each further include an outlet that connects to dispensing valves  16 A-C, respectively, to supply product to dispensing valves  16 A-C. In an alternative embodiment, product lines  71 - 73  could each include a helical configuration to better facilitate heat transfer by providing greater surface area along each product line to thermodynamically interact with the circulating cooling fluid. An example of such a helical configuration is seen in U.S. patent application Ser. No. 09/136,086, the disclosure of which is incorporated herein by reference. Although three product lines and dispensing valves are disclosed, one of ordinary skill in the art will recognize that additional product and dispensing valves or that fewer product lines and dispensing valves may be implemented in any combination.  
         [0029]    In the preferred embodiment, cooling chamber  12  includes a water line  14  having a serpentine configuration to permit its placement on the bottom of cooling chamber  12 . Water line  14  mounts to the bottom  15 E of housing  11  using any suitable mounting means. An inlet  101  into water line  14  connects to main water pump  75  which, in turn, connects to any suitable external water source such as a public water line. The placement of the water line  14  on the bottom of cooling chamber  12 , so that it is substantially submerged within the cooling fluid, allows for the water within the water line  14  to be chilled via heat transfer with the relatively cooler cooling fluid. Chilling the water within water line  14  serves two distinct functions. First, the beverage dispenser  10  may dispense chilled, plain water through a plain water outlet  102  of the water line  14 , and, second, plain water within the water line  14  is “prechilled” before delivery into a carbonator  18  disposed in cooling chamber  12 . In particular, an outlet  103  from water line  14  connects to a T-connector, which delivers the water received from the water line  14  to carbonator  18 . Additionally, carbonator  18  connects to and receives carbon dioxide from a carbon dioxide source (not shown) to carbonate the water delivered from water line  14 . Carbonator  18  mounts within the front of the cooling chamber  12  using any suitable mounting means.  
         [0030]    Because a relatively small amount of chilled water is diverted by the plain water outlet  102 , the majority of the chilled water within water line  14  is carbonated upon passing through carbonator  18 . Water chilled prior to delivery to carbonator  18  is highly desirable because it enhances the carbonation process.  
         [0031]    In this preferred embodiment, cooling chamber  12  includes a rechill line  100  whereby carbonated water exits carbonator  18  through outlet  104  and enters rechill line  100  via inlet  105 . Rechill line  100  includes a serpentine configuration to permit its placement on the bottom of cooling chamber  12 . Rechill line  100  is positioned in cooperation with water line  14  so that both the rechill line  100  and the water line  14  act together to direct the flow of unfrozen cooling fluid about cooling chamber  12 , as is discussed below. Moreover, by placing rechill line  100  on the bottom of the cooling chamber so that it is substantially submerged within the cooling fluid, rechill line  100  allows for carbonated water therein to be “rechilled” via heat transfer with the relatively cooler cooling fluid.  
         [0032]    The introduction of rechill line  100  into the cooling chamber  12  significantly increases the dispensing capacity of the beverage dispenser  10 . The rechill line  100  significantly increases the ability of the beverage dispenser  10  to dispense carbonated water and, thus, drinks at or below the industry standard temperature, especially when the dispensing valves  16 A-C have not been used for a prolonged period, because rechill line  100  remains submerged in the cooling fluid until a drink is ready to be dispensed. More particularly, cooled carbonated water from rechill line  100  combines with cooled product from product lines  71 - 73  to form a relatively colder beverage, as compared to beverage dispensers without a rechill line, thereby greatly enhancing the beverage dispensing capacity of the beverage dispenser  10  without increasing its overall size.  
         [0033]    When a desired beverage is accessed through one of the dispensing valves  16 A-C, carbonated water exits the rechill line  100  through outlets  106  and enters a designated dispensing valve so as to be mixed with the desired product and then dispensed into a cup below. Product pumps  76 - 78  are provided to pump the desired product from the product lines  71 - 73  to the dispensing valves  16 A-C. The dispensing valves  16 A-C, in turn, are secured to the front wall  15 A of housing  11  by a faucet plate  16 D. (See FIG. 2). A drip tray  123  is provided beneath the dispensing valves  16 A-C. The drip tray  123  is secured to the lower portion of front wall  15 A using any suitable means to collect beverage drippings emitted by the valves above. In addition, an easy to clean splash plate  122  is secured using any suitable means onto the forward facing surface of front wall  15 A to protect the beverage dispenser  10  against the unwanted accumulation of beverage drippings and splashings from the valves.  
         [0034]    In this preferred embodiment, cooling chamber  12  includes refrigeration unit  13 . Refrigeration unit  13  is a standard beverage dispenser refrigeration system that includes a compressor  115 , a condenser assembly  33 , and a compressor deck platform  110 . Condenser assembly  33 , in turn, includes a condenser coil  34 , a fan  36  to blow air across condenser coil  34  thereby facilitating heat transfer, and an air directing shroud  117  that houses the condenser coil  34  and supports the fan  36 . The air directing shroud  117  is optimally configured to facilitate heat transfer between the condenser coil  34  and the air blown by fan  36 . Fan  36  mounts onto and condenser coil  34  is secured within the air directing shroud  117  using any suitable mounting means.  
         [0035]    The compressor  115  and the condenser assembly  33  as well as an electronics components housing assembly  116  and an agitator motor  37  mount on top of the compressor deck platform  110  while an evaporator coil  35  mounts underneath. Compressor deck platform  110  is integrally secured to a housing platform  38  so as to form one continuous surface that mounts on top of housing  11  such that evaporator coil  35  resides substantially submerged within the cooling fluid, just above water line  14  and rechill line  100  and substantially about the central portion of cooling chamber  12 . Moreover, compressor deck platform  110  is configured to be easily removed from housing platform  38  during cleaning or maintenance. In addition to compressor deck platform  110 , main pump  75  and mini pumps  76 - 78  are secured to housing platform  38 .  
         [0036]    Refrigeration unit  13  operates similarly to any standard beverage dispenser refrigeration system to cool the cooling fluid residing within cooling chamber  12  such that the cooling fluid freezes in a slab about evaporator coil  35 . Refrigeration unit  13  cools and ultimately freezes the cooling fluid to facilitate heat transfer between the cooling fluid and the product, water, and carbonated water so that a cool beverage may be dispensed from beverage dispenser  10 . However, because complete freezing of the cooling fluid results in an inefficient heat exchange, a cooling fluid bank control system (not shown), within the electronic components housing assembly  116 , regulates the compressor  115  to prevent the complete freezing of the cooling fluid such that the compressor  115  never remains activated for a time period sufficient to allow the frozen cooling fluid slab to grow onto product lines  71 - 73 .  
         [0037]    In this preferred embodiment, evaporator coil  35  is a one piece unit defined by an alternating series of substantially offset coils; i.e. an inner coil section  35   a  and an outer coil section  35   b , positioned substantially centrally in cooling chamber  12 . (See FIGS.  3 - 4 ). The coils sections are substantially offset in that each outer coil section  35   b  resides in a different horizontal plane from the interior coil section  35   a . The substantially offset coils are an improved design to uniformly distribute the frozen slab that freezes about evaporator coil  35  so as to ultimately allow for the optimal flow of unfrozen cooling fluid around the frozen cooling fluid slab and through a channel defined by the hollowed interior portion of the slab.  
         [0038]    By contrast, U.S. Pat. No. 5,368,198 features an evaporator coil having a series of inner coil sections and outer coil sections residing along the same horizontal plane. Accordingly, the &#39;198 evaporator coil will develop improperly distributed bulges of frozen cooling fluid around the area where the inner coil sections and outer coil sections lie in the same horizontal plane. Collectively, these bulges define a nonuniform frozen slab that greatly hinders or completely stops the free-flow of cooling fluid about the cooling chamber. In particular, the bulges either create an undesirably narrow channel within the frozen slab whereby cooling fluid could not satisfactorily flow therethrough or, in some cases, completely freeze over the channel as well as the entire beverage dispenser.  
         [0039]    As such, evaporator coil  35  includes an inlet  35   c  and an outlet  35   d  through which a refrigerant fluid continuously flows thereby allowing cooling fluid to freeze about the evaporator coil  35  when in operation. As shown in FIG. 4, to ensure that the cooling fluid freezes to form a uniform slab with maximum cooling effect, an optimal height, h, and an optimal width, w, between adjacent inner and outer coil sections  35   a  and  35   b , respectively, are provided.  
         [0040]    The outer surface texture of the inner and outer coil sections,  35   a  and  35   b , can each be configured to allow for different rates of heat transfer. For example, coil sections with a rough texture slow the flow rate of cooling fluid by allowing the fluid to “cling” to the coil section for a longer time to facilitate growth of frozen cooling fluid about evaporator coil  35 . In much the same way as the outer surface texture can be configured, those skilled in the art will recognize that the wall thickness of the coil sections can be configured to accommodate different rates of heat transfer. The material composition of the coil sections can also be configured by those skilled in the art to accommodate different rates of heat transfer for facilitating the growth of a uniformly distributed frozen cooling fluid slab.  
         [0041]    Agitator motor  37  mounts onto compressor deck platform  110  to drive, via a shaft (not shown), an impeller (not shown) set within the unfrozen cooling fluid and secured to the end of the shaft. Agitator motor  37  drives the impeller to circulate the unfrozen cooling fluid around the frozen cooling fluid slab as well as about water line  14 , rechill line  100 , and product lines  71 - 73 . The impeller circulates the unfrozen cooling fluid to enhance the transfer of heat, which naturally occurs between the lower temperature cooling fluid and the higher temperature product, water, and carbonated water. Heat transfer results from the product, water, and carbonated water flowing through product lines  71 - 73 , water line  14 , and rechill line  100 , respectively, which give up heat to the unfrozen cooling fluid. The unfrozen cooling fluid, in turn, transfers the heat to the frozen cooling fluid slab which receives that heat and melts in response, thereby completing the thermodynamic cycle by providing “liquid” or unfrozen cooling fluid into cooling chamber  12 . The heat originally transferred from the product, water, and carbonated water into the cooling fluid is continuously dissipated through the melting of the frozen cooling fluid slab. Accordingly, that dissipation of heat and corresponding melting of frozen cooling fluid slab maintain the frozen cooling fluid at the desired temperature of 32° F., which is ideally below the industry standard.  
         [0042]    The effectiveness of the above-described transfer of heat directly relates to the amount of surface area contact between the unfrozen cooling fluid and the frozen cooling fluid slab. That is, if the unfrozen cooling fluid contacts the frozen cooling fluid slab along a maximum amount of its surface area, the transfer of heat significantly increases. Beverage dispenser  10  maintains maximum contact of unfrozen cooling fluid along the surface of the frozen cooling fluid slab due to the positioning of the water line  14  and rechill line  100  at the bottom portion of the cooling chamber  12  and the placement of product lines  71 - 73  at the front portion of cooling chamber  12 . Maximum contact is further achieved due to the serpentine configurations of water line  14  and rechill line  100  as well as the helical configuration of product lines  71 - 73 .  
         [0043]    Specifically, the removal of product lines and water lines from the center of the evaporator coil eliminates the obstruction to the flow of unfrozen cooling fluid experienced by beverage dispensers having one or both of the product and water lines centered within the evaporator coil. Furthermore, by increasing the size of evaporator coil  35 , a larger frozen cooling slab forms. Particularly, the placement of the product lines  71 - 73  in the front portion of cooling chamber  12  permits the size of evaporator coil  35  to be increased without a corresponding increase in the height of housing  11 . A larger frozen cooling fluid slab provides a greater surface area for the transfer of heat with the unfrozen cooling fluid. That increase in cooling efficiency through heat transfer from the unfrozen cooling fluid to the frozen cooling fluid slab maintains the unfrozen cooling fluid at 32° F., even during peak use periods of beverage dispenser  10 . Consequently, the ability to increase the heat extracted from the product and water significantly increases the overall beverage dispensing capacity of beverage dispenser  10 . Moreover, through the above modifications, this increased efficiency optimally facilitates the introduction of the rechill line  100  into the cooling chamber  12  to permit the extraction of heat from the carbonated water within the rechill line  100  by the unfrozen cooling fluid, thereby further enhancing the ability of beverage dispenser  10  to continuously serve beverages well below the industry standard.  
         [0044]    The serpentine configuration of water line  14  increases the effectiveness of the circulation of unfrozen cooling fluid by the impeller. As shown in FIGS.  1 - 2 , the serpentine configuration of water line  14  produces channels that direct the flow of unfrozen cooling fluid toward front wall  15 A and back wall  15 B of housing  11 .  
         [0045]    In the same manner, the serpentine configuration of rechill line  100  increases the effectiveness of the circulation of unfrozen cooling fluid by the impeller. As shown in FIGS.  1 - 2 , the serpentine configuration of rechill line  100  produces channels that direct the flow of unfrozen cooling fluid toward front wall  15 A and back wall  15 B of housing  11 . In addition, rechill line  100  is positioned in cooperation with water line  14  so that both the rechill line  100  and the water line  14  act together to direct the flow of unfrozen cooling fluid about cooling chamber  12 .  
         [0046]    The outer surface textures of the rechill line  100  and/or water line  100  can also be configured to allow for different rates of heat transfer. For example, a rechill and/or water line having a rough texture slows the flow rate of cooling fluid by allowing the fluid to “cling” to the channels for a longer time so as to further cool the fluid within that line. In much the same way as the outer surface texture can be configured, those skilled in the art will recognize that the wall thickness of a rechill and/or water line can be configured to accommodate different rates of heat transfer. The material composition of the rechill and/or water line can also be configured by those skilled in the art to accommodate different rates of heat transfer for facilitating better thermal absorption at cooler temperatures.  
         [0047]    It must also be emphasized that beverage dispenser  10  is configured for easy cleaning and serviceability in little time and with a minimum number of tools required. In the past, screws and/or other means for mounting included within beverage dispenser  10  would be lost by falling within various crevices about the beverage dispenser  10  or by falling within the cooling chamber  12  where they would often conglomerate with the slab of frozen cooling fluid. In some cases, screws from the manufacturer were not easy to replace through a trip to the local hardware store, resulting in a lack of replacement of the screws or the use of non-standard attachment means. Beverage dispenser  10  fulfills the past need for easy cleaning and serviceability by eliminating the above problems.  
         [0048]    Accordingly, main water pump  75  and product pumps  76 - 78  are placed near the front of the beverage dispenser  10  for easy access during cleaning and maintenance. Several electronic components, including the cooling fluid bank control system, have been centralized and housed within the electronic components housing assembly  116  which is located on top of the compressor deck platform  110 . In this preferred embodiment, the rectangular housing  11  of beverage dispenser  10  is rounded about its edges to allow for easy lifting and transport, and unwanted holes, gaps, and crevices about the beverage dispenser  10  have been closed to prevent screws and other small objects from falling therein. (See FIG. 5).  
         [0049]    Agitator motor  37 , electronic components housing assembly  116 , and main pump  75  each feature at least one mounting bracket  130 , which facilitates the attachment and the removal of such components from the beverage dispenser  10  without the removal of accompanying mounting screws  131  for at least one bracket  130 . In particular, each mounting bracket  130  features at least one slide aperture  132 . The slide aperture  132  includes a removal portion which is wide enough to allow the head of mounting screw  131  to pass through mounting bracket  130  and a mounting portion which is narrow enough to keep the head of the mounting screw  131  above the mounting bracket  130  so that the mounting bracket  130  is firmly secured onto the beverage dispenser  10 . In operation, mounting screw  131  is sufficiently loosened to allow mounting bracket  130  to be moved in a manner such that the head of mounting screw  131  slides along the upper portion of slide aperture  132  from the mounting portion to the removal portion. The mounting bracket  130  is then lifted away from the beverage dispenser  10  by allowing the head of the mounting screw  131  to pass through the mounting bracket. Thus, the mounting screw  131  is never completely removed from the beverage dispenser  10  and is only sufficiently loosened for the mounting bracket  130  to slide out, thereby eliminating the once frequent problem of lost mounting screws. In a manner opposite to that described above, the mounting bracket  130  is affixed to the beverage dispenser  10 .  
         [0050]    Furthermore, in this preferred embodiment, compressor  115  features at least one clip  135  and at least one corresponding loop  136 , which facilitate the attachment and the removal of compressor  115  from the beverage dispenser  10 . In particular, the loop  136  is secured to the surface of the compressor deck platform  110  using any suitable means. Thus, the compressor  115  is removed from the compressor deck platform  110  by removing the clip  135  from the loop  136  and then lifting the compressor  115  away from the beverage dispenser  10 . It should be also emphasized that one of ordinary skill in the art will recognize that other suitable mounting means for components within the beverage dispenser  10  other than the mounting bracket  130  as well as the clip  135  and loop  136  described above may be used.  
         [0051]    In operation, agitator motor  37  drives the impeller to force unfrozen cooling fluid from the channel defined by the interior surface of the hollowed slab of frozen cooling fluid toward water line  14  and rechill line  100 . As the forced flow of unfrozen cooling fluid approaches the wound channels of water line  14  and rechill line  100 , these channels direct the unfrozen cooling fluid toward the front wall  15 A and back wall  15 B of housing  11 . More particularly, the channels direct a first stream of unfrozen cooling fluid toward the front wall  15 A and a second stream of unfrozen cooling fluid toward the rear wall  15 B.  
         [0052]    As the first stream of unfrozen cooling fluid flows into the front portion of cooling chamber  12 , it contacts product lines  71 - 73  to remove heat from the product flowing therein. Furthermore, the unfrozen cooling fluid contacts the frozen cooling fluid slab to transfer heat therebetween. Likewise, as the second stream of unfrozen cooling fluid flows into the rear portion of cooling chamber  12 , it contacts the frozen cooling fluid slab to produce heat transfer therebetween.  
         [0053]    The first and second streams of unfrozen cooling fluid circulate from the front and rear portions of the cooling chamber  12 , respectively, into the top portion of cooling chamber  12 . As the first and second streams of unfrozen cooling fluid enter the top portion of cooling chamber  12 , they contact the top of the frozen cooling fluid slab to produce heat transfer therebetween. Furthermore, the first and second streams of unfrozen cooling fluid flow into the channel defined by the interior surface of the frozen cooling fluid slab where such streams recombine to contact the frozen cooling fluid slab for a further heat transfer. The recombined cooling fluid stream entering the channel is again forced from the channel toward water line  14  and rechill line  100  by the impeller in a manner so that the above-described circulation repeats.  
         [0054]    Additionally, the impeller propels unfrozen cooling fluid from the channel of the frozen cooling fluid slab toward side walls  15 C and D. The unfrozen cooling fluid divides into third and fourth streams of unfrozen cooling fluid which travel a circuitous path around the sides of the frozen cooling fluid slab, over the top of the frozen cooling fluid slab, and back to the channel defined by the slab of frozen cooling fluid. That flow of the third and fourth streams of unfrozen cooling fluid produces additional heat transfer from the product, water, and carbonated water to the unfrozen cooling fluid.  
         [0055]    Accordingly, the completely unobstructed path for unfrozen cooling fluid about all sides of the frozen cooling fluid slab as well as through the channel of the frozen cooling fluid slab provides maximum surface area contact between frozen and unfrozen cooling fluid. That maximum surface area contact results in maximum heat transfer from the product, water, and carbonated water to the unfrozen cooling fluid and, in turn, to the frozen cooling fluid slab. Consequently, beverage dispenser  10  exhibits an increased beverage dispensing capacity because the unfrozen cooling fluid maintains a temperature, below the industry standard, of approximately 32° F. even during peak use periods due to its increased circulation and corresponding increased heat transfer capacity.  
         [0056]    Without the constant circulation of unfrozen cooling fluid, the same unfrozen cooling fluid would remain between the frozen cooling fluid slab and the front, rear, and side walls  15 A,  15 B, and  15 C-D, respectively. Eventually, that unagitated unfrozen cooling fluid would freeze because it would not receive sufficient heat from the product, water, and carbonated water to prevent its freezing. Accordingly, the increased circulation of unfrozen cooling fluid produced by the above mentioned configuration of beverage dispenser  10  not only produces a larger beverage dispensing capacity in beverage dispenser  10 , but it also prevents a freeze-up of cooling fluid which would severely limit beverage dispensing capacity.  
         [0057]    Although the present invention has been described in terms of the foregoing embodiment, such description has been for exemplary purposes only and, as will be apparent to those of ordinary skill in the art, many alternatives, equivalents, and variations of varying degrees will fall within the scope of the present invention. That scope, accordingly, is not to be limited in any respect by the foregoing description, rather, it is defined only by the claims which follow.