Patent Publication Number: US-11391494-B2

Title: Multiple directional blow unit cooler

Description:
COPYRIGHT AND TRADEMARK NOTICE 
     This application includes material which is subject or may be subject to copyright and/or trademark protection. The copyright and trademark owner(s) has no objection to the facsimile reproduction by any of the patent disclosure, as it appears in the Patent and Trademark Office files or records, but otherwise reserves all copyright and trademark rights whatsoever. 
     BACKGROUND OF THE INVENTION 
     (1) Field of the Invention 
     The invention generally relates refrigeration systems. More particularly, the invention relates to the manufacture and application of evaporator coil systems contained within housing assemblies that comport to compact, awkward and food contaminated commercial environments. 
     (2) Description of the Related Art 
     U.S. Pat. No. 9,242,525 by Kobayshi and issued on Jan. 26, 2016 teaches multi directional blowing in a rotational assembly wherein a condenser coil and evaporator coil rotate around an elongated shaft. While Kobayshi does provide directed outlets, Kobayshi fail to teach or anticipate the multiple directions of air flow enabled by the presently disclosed embodiments. Moreover, Kobayshi adds complexity and mechanical challenge in refrigeration since Kobayshi requires the use of balancing weights, a feature not needed in the disclosed embodiments. 
     U.S. Patent Publication 2014/0360221 by Kyle et al and published on Dec. 11, 2014 discloses a refrigeration system suited for small boats. Kyle uses a self-contained system taking the shape of a hollow cylinder. While Kyle appears to be well suited for compact spaces, Kyle fails to teach, suggest or disclose means or methods of accommodating varying directions of air flow as needed in land based commercial settings. 
     U.S. Pat. No. 8,117,864 by Montminy et al and granted on Feb. 21, 2012 discloses modular and compact air conditioning systems used in small carts for air craft support. While the Montminy system is compact, the system does not contemplate, anticipate or suggest the use of a housing system to allow for quick adjustment of air flow direction or multiple mounting positions. 
     BRIEF SUMMARY OF THE INVENTION 
     The present invention overcomes shortfalls in the related art by presenting an unobvious and unique combination, configuration and use of mounting brackets, housing configurations, fan motors, shaped discharge of blown air, and other features to create a versatile system that is well suited for a myriad of commercial environments. 
     The known related art fails to disclose, suggest or teach the use of the disclosed coil and fan mounting systems wherein two or so mounting brackets can be used interchangeably within the system to allow for multiple mounting positions, such as back wall mount, ceiling mount or a mullion style mount. The disclosed embodiments achieve advantages in manufacture by use of a frame or housing system that easily and nondestructively comports to many mounting positions and airflow configurations. 
     Objectives of the disclosed embodiments include the efficient manufacture of a line of evaporator coils that are energy efficient, quickly adaptable to fit into tight areas, extremely versatile, strong and compatible to the harsh environments evaporator coils are subject to in commercial environments, especially those in the food industry. 
     The disclosed embodiments may include multiple coils with varying BTU ratings. Various embodiments may be of the same height and depth and may use the same motors and other components. 
     A main assembly, housing or body may comprise a front cover, back panel, drain pans mounts and other components that may be comprised of 20-gauge 304 stainless steel or similar materials. Such materials and/or other disclosed features, give the disclosed embodiments the needed durability and longevity to survive in commercial food environments. The disclosed evaporator coils and other disclosed components are well suited for harsh environments wherein food and sauces may disburse acids and other contaminants that will corrode the systems of the related art. Said coils may be coated by dipping and baking so as to add longevity to the coils. 
     Disclosed embodiments include unique fan motors, motor bodies and impellers may be made of plastic or other non-corrosive materials so as not to rust or corrode. Disclosed motors may include ball bearing that comprise protective coatings to minimize water damage to the bearings. The disclosed motors may be RoHS II certified and/or are rated to operate at 100 v-240 v 50/60 hz. Disclosed motors may use or require 0.06 amps or less, which represents a meaningful improvement as compared to the related art. The blow pattern of a disclosed motor may comport to a cone shape. In a disclosed cone shaped discharge, the flow starts at the base of the motor and projects air outwardly in a cone shape. Disclosed cone shape discharges cover more area than a direct air pattern, as embraced by the prior art. 
     The disclosed embodiments include versatility in mounting and use of variable and multiple air blow directions. Disclosed coils can be efficiently mounted to a back-wall mount, ceiling mount, mullion style mount. The different mounting positions may be achieved with just two interchangeable mounting brackets. With said mounting brackets sometimes made from 304 stainless steel. The depth of the coils may be 4⅜″ deep, allowing a disclosed coil to fit in areas where coils of the prior art would not fit. To make multiple mounting options feasible and to overcome air flow problems of the related art, disclosed embodiments allow for quick attachment or configuration of multiple fans to enable multiple air flow directions and multiple points of origin and destination of air flow. Embodiments may be quickly and nondestructively configured to blow air forward, up, and back. Moreover, multiple directions of air flow may be combined and may occur at the same time. The prior art fails to provide such quickly executed versatility. The prior art requires multiple fixed configurations that are selected or purchased separately for each anticipated mounting and blow pattern environment. Thus, the prior art has a significant shortfall in requiring vendors to purchase, store and stock multiple models, or special order a particular model. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  exploded view of housing assembly 
         FIG. 2  perspective view of a wall mount configuration 
         FIG. 3  perspective view of a mullion mount configuration 
         FIG. 4  top view in a wall mount configuration 
         FIG. 5  front view in a wall mount configuration 
         FIG. 6  end view in a wall mount configuration 
         FIG. 7  rear view in a mullion mount configuration 
         FIG. 8  perspective vie of front plate 
         FIG. 9  side edge assembly of front plate from  FIG. 8   
         FIG. 10  expanded view of fastener detail from  FIG. 9   
         FIG. 11  perspective view of a mullion mount bracket 
         FIG. 12  perspective view with front plate removed 
         FIG. 13  back plate with coil installed 
         FIG. 14  various internal components 
         FIG. 15  back plate and front plate of a horizontal embodiment 
         FIG. 16  front view with front fans installed and top fan voids covered 
         FIG. 17  perspective view of a cooling side of a horizontal embodiment 
         FIG. 18  perspective view of a drainage end of a horizontal embodiment 
         FIG. 19  inner side of a front plate for a horizontal embodiment 
         FIG. 20  outer side of a front plate for a horizontal embodiment 
     
    
    
     REFERENCE NUMERALS IN THE DRAWINGS 
     
         
         
           
               100  housing assembly 
               200  front plate of housing assembly 
               203  front plate of a horizontal embodiment 
               204  drainage wall of front plate  203  for horizontal embodiment 
               205  drainage creases for front plate of a horizontal embodiment 
               207  a horizontal embodiment in general 
               210  top ledge of front plate  200   
               212  first top void defined within top ledge  210   
               215  second top void defined within top ledge  210   
               217  third top void defined within top ledge  210   
               250  side wall of front plate  200   
               260  first side void defined within side wall  250   
               265  second side void defined within side wall  250   
               267  third side void defined within side wall  250   
               280  lateral edge piece 
               285  tig weld at transition junctions of lateral edge pieces 
               290  instrument reading void defined within the side wall or front wall of the front plate 
               293  lower edge or lower edges of front plate 
               300  back plate of housing assembly 
               310  vertical wall of backplate 
               320  first void defined within vertical wall of backplate 
               325  second void defined within vertical wall of backplate 
               360  left side wall of back plate 
               370  right side wall of back plate 
               380  lower edge or lower edges of back plate 
               400  first mullion mount bracket 
               410  top horizontal plate of mullion mount bracket  400   
               421  vertical extension section of mullion mount bracket 
               425  transition jog between vertical extension section  421  and lower mount plate  430   
               430  lower mount plate of mullion mount bracket  400   
               450  second mullion mount bracket 
               470  housing in a mullion mount configuration 
               500  back support angle 
               520  fastener such as a button rivet 
               550  housing in a wall mount configuration  720   
               600  drip pan 
               620  drain tube of drip pan 
               630  air circulation void defined by upper edges of drain pan and lower edges of front plate and back plate 
               635  upper edge or upper edges of drip pan  600   
               700  fan 
               720  protective cage for fan 
               730  void cover, in area sometimes used for a fan  300   
               800  evaporation coil 
           
         
       
    
     These and other aspects of the present invention will become apparent upon reading the following detailed description in conjunction with the associated drawings. 
     DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION 
     The following detailed description is directed to certain specific embodiments of the invention. However, the invention can be embodied in a multitude of different ways as defined and covered by the claims and their equivalents. In this description, reference is made to the drawings wherein like parts are designated with like numerals throughout. 
     Unless otherwise noted in this specification or in the claims, all of the terms used in the specification and the claims will have the meanings normally ascribed to these terms by workers in the art. 
     Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise,” “comprising” and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in a sense of “including, but not limited to.” Words using the singular or plural number also include the plural or singular number, respectively. Additionally, the words “herein,” “above,” “below,” and words of similar import, when used in this application, shall refer to this application as a whole and not to any particular portions of this application. 
     Referring to  FIG. 1 , a housing assembly  100  may include a front plate  200 , a back plate  300 , a drip pan  600 . At least two mounting options are easily configured without breaching the inside of the housing. For a back mount application, a first and second back support angle  500  may be attached to the back plate. The back support angle may then be attached to a wall or other environmental element. An advantage of the disclosed embodiments is that a unit may be sold with both a set of mullion mount brackets  400  and back support angles  500  at little additional cost. Such a configuration allows an end user or installer to make an onsite decision as to a mounting position without having to open the housing. 
     A further advantage over the prior art is that the disclosed embodiments may include a plurality of fan voids with the fan voids being defined within three different surfaces with each surface disposed on a different plane. Each fan void may be filled with a fan or a void cover. Each fan void may be filled or equipped with a fan with such installation not requiring a movement or reinstallation of a coil. A coil, as shown in  FIG. 13 , a coil is disposed within a lower section of a back plate, allowing the fan voids of the back plate to be covered or filled with fans without disturbing the installed coil. Since there are few or no parts installed upon the front plate, the voids of the front plate are easily covered or filled with fans. Due in part, to the combination of housing assembly elements, the front and back plates may be removed or attached to one another with ease, as shown in  FIG. 15 . 
     Referring to  FIG. 1 , a front plate  200  may comprise a top ledge  210  with the top ledge defining a first top void  212 , a second top void  215  and a third top void  217 . A front plate may also comprise a side wall  250  or front wall, with the side wall sometimes defining a first side void  250 , a second side void  265  and a third side void  267 . The sides or lateral edges of the front plate may comprise a bent lip or lateral edge pieces, as shown in  FIG. 9  in reference number  280 . 
     A backplate  300  may comprise two side walls such as a left side wall  360  and a right sidewall  370  with the terms “left” and “right” being interchangeable. A backplate may further comprise a vertical wall or back wall which may define a first void  320  and a second void  325 . An advantage of the disclosed configurations is that both the back support angles  500  and mullion mount brackets  400  may be attached to the back plate only, allowing the front plate to be removed for unit servicing without having to dismount the unit from the wall or ceiling. 
     Referring to  FIG. 2 , a perspective view of an assembled embodiment is illustrated with fans disposed in three voids of the side wall  250  or front wall of the front plate and three voids of the top ledge of the front plate are used to secure fans as well. In this illustrated configuration, air is blown in both front and upward directions. 
     Disclosed embodiments overcome shortfalls in the related art by use of air circulation voids  630  which may be defined by upper edges  635  of the drain pan and front plate lower edges  293  and back plate lower edges  380 . The circulation void or circulation voids are artfully created by using the native edges of the back plate, front plate and drain pan so as to not require any modifications to the housing components. Superior intake air flow is achieved by the circulation void(s) in that the circulation voids are distal from the fan voids and fans so as to draw air over the internal coil. 
       FIG. 3  is similar to  FIG. 2 , except a wall mount configuration  550  is shown wherein a pair of mullion mount brackets are disposed on the superior section of the embodiment, allowing for ceiling installation. 
       FIG. 4  depicts a top view of a top ledge  210  of a front plate or a top end component. The fans are shown to be installed for the upward movement of air. 
       FIG. 5  depicts a front view of a disclosed embodiment with three fans installed for a front movement of air. 
       FIG. 6  depicts a side of a disclosed embodiment, or a view of a left side wall  360  of a backplate. A back support angle  500  is attached to the back plate. 
       FIG. 7  depicts a back side of a disclosed embodiment with a fan disposed within or upon each of the voids defined with in the vertical wall  310  or back wall of the backplate. Such a fan configuration will result in a rearward flow of air. 
       FIG. 8  depicts a front plate  200  or front cover comprising a lateral edge piece  280  or edge surface disposed at either lateral side of the front plate. 
       FIG. 9  more clearly shows lateral edge piece components  280 . 
       FIG. 10  depicts a joint or transition area of  FIG. 9  and shows a tig weld  285  at said transition point. 
       FIG. 11  depicts a perspective view of a mullion mount bracket  400  that may comprise a lower mount plate  430  attached at an inward angle to a transition jog  425  with the transition jog attached to a vertical extension section  421  with the vertical extension section attached to top horizontal plate  410 . Said features of the mullion mount bracket overcome shortfalls in the related art by increasing ease of installation as the top horizontal plates  410  are disposed inwardly from the lateral sides of the backplate, allowing working room for insertion of fasteners through voids of the top horizontal plates. Thus, an embedment may be installed tightly at an interior corner and an installer will have room to access the top horizontal plate by virtue of the inward distance gained by use of the transition jog  425 . 
       FIG. 12  depicts a front plate  200  being attached to a backplate  300  with fans  700  disposed within voids of the front plate and back plate. A coil  800  is disposed within the lower confines of the backplate so as to not interfere with the installation of either fans or void covers upon voids of the backplate. In this configuration, air will blow from both the front and back sides of the embodiment. 
       FIG. 13  depicts and evaporator coil disposed within a backplate. 
       FIG. 14  depicts further components disposed within a backplate. 
       FIG. 15  depicts a front plate  203  of a horizontal embodiment in wired connection with a backplate  300 . 
       FIG. 16  depicts an embodiment ready for either mullion mounting or vertical surface mounting. Void covers  730  block fan voids in both the backplate and front plate. 
       FIG. 17  depicts a horizontal embodiment  207  and the use of back support angles  500 . 
       FIG. 18  depicts a horizontal embodiment with a horizontally disposed drain tube  620 . 
       FIG. 19  depicts inside components or features of a front plate  203  for a horizontal embodiment, with the front plate  203  comprising drainage creases  205  or drainage valleys that provide guidance and slope for fluid drainage to the drain tube  620 . 
       FIG. 20  depicts an outside surface of front plate  203 . 
     The above detailed description of embodiments of the invention is not intended to be exhaustive or to limit the invention to the precise form disclosed above. While specific embodiments of, and examples for, the invention are described above for illustrative purposes, various equivalent modifications are possible within the scope of the invention, as those skilled in the relevant art will recognize. For example, while steps are presented in a given order, alternative embodiments may perform routines having steps in a different order. The teachings of the invention provided herein can be applied to other systems, not only the systems described herein. The various embodiments described herein can be combined to provide further embodiments. These and other changes can be made to the invention in light of the detailed description. 
     All the above references and U.S. patents and applications are incorporated herein by reference. Aspects of the invention can be modified, if necessary, to employ the systems, functions and concepts of the various patents and applications described above to provide yet further embodiments of the invention. 
     These and other changes can be made to the invention in light of the above detailed description. In general, the terms used in the following claims, should not be construed to limit the invention to the specific embodiments disclosed in the specification, unless the above detailed description explicitly defines such terms. Accordingly, the actual scope of the invention encompasses the disclosed embodiments and all equivalent ways of practicing or implementing the invention under the claims. 
     While certain aspects of the invention are presented below in certain claim forms, the inventors contemplate the various aspects of the invention in any number of claim forms.