KR20070114204A - Evaporator Fan / Motor Assembly Support Brackets - Google Patents

Abstract

The refrigerated showcase 10 is a top wall 22, a bottom wall 24 to define an internal product display space 100 for housing the product 110 on the shelf 112 in a refrigerated environment intended for consumer selection. ), A cabinet 20 having a back wall 34 and side walls 36 and 38. The refrigeration unit cassette 50 is disposed in operative coupling with the internal product display space in the compartment 55 below the lower wall 24. The evaporator fan 63 and its associated fan motor 61 are supported by a bracket 80, which bracket 80 has three legs 85, 87, 89 extending therefrom, in effect a T-shaped body. And mounted to the housing 96 of the evaporator 60 housed in the refrigeration unit cassette 50.

Description

Evaporator Fan / Motor Assembly Support Bracket}

<Cross Reference of Related Application>

Reference is made to US Provisional Application No. 60 / 663,409, filed Mar. 18, 2005, and entitled “Evaporator Motor Mounting Bracket”, the application of which is incorporated by reference in its entirety herein, and which is incorporated herein by reference. Enjoy the profits.

This application is assigned to the co-assignee of this application and filed with the U.S. Patent and Trademark Office on the same date as the present application, that is, international patent application No. PCT / US05 / (representative list 210_817PCT) entitled "Cold Showcase". ); International Patent Application No. PCT / US05 / (Agent List 210_816PCT) entitled "Sealing System for Refrigerated Cassettes"; International Patent Application No. PCT / US05 / (agent list 210_820PCT) entitled "Modular Refrigeration Cassette"; International Patent Application No. PCT / US05 / (Agent List 210_879PCT) entitled "Modular Refrigeration Cassette with Condensation Evaporation Tray"; And International Patent Application No. PCT / US05 / (Agent List No. 210_818PCT) entitled “Bottom Bottom Plate Assembly for Refrigerated Showcase”. Each of the foregoing patent applications is hereby incorporated by reference in its entirety.

The present invention relates generally to support for fans and motor assemblies, and more particularly to brackets for supporting evaporator fans and their associated motors in limited flow paths of refrigerated showcases.

The refrigerated showcase has a refrigeration system associated therewith to provide a cooling environment in the refrigerated internal product space defined in its cabinet. The refrigeration system of such refrigerated showcases generally employs known Carnot refrigeration cycles, and evaporator and evaporator fans which are operatively combined with condenser, condenser fan and compressor, as well as the refrigerated internal product space of the refrigerated cabinet. It includes. In a standalone cabinet, the compressor, condenser and condenser fan are housed in an equipment compartment that is separated and insulated from the refrigerated internal product space of the refrigerated cabinet. The refrigerant is circulated by the compressor through a refrigerant line connecting the compressor, condenser and evaporator in a conventional manner to form a closed circuit. Air in the adiabatic refrigerated internal product space of the refrigeration cabinet is circulated and cooled by the evaporator fan through the evaporator in a heat exchange relationship with the refrigerant. The evaporator and the evaporator fan may be arranged in the cooled interior of the refrigeration cabinet, for example in its upper region.

However, it is known that evaporator and evaporator fans may also be housed in equipment compartments in sections of equipment compartments insulated from compressors, condensers and condenser fans. Among other uses, this type of refrigerated showcase can be used as a product display cabinet for refrigerated or frozen food, as a vending machine and as a cold beverage showcase in supermarkets, grocery stores, gas stations, convenience stores and other retail facilities. For example, cold beverages such as soft drinks, beer, wine coolers and the like are commonly displayed in refrigerated display cases for self-service purchases by customers. Conventional beverage showcases of this type include an insulating cabinet with one or more glass doors that define a refrigerated internal product display space and provide access to the product display space. Typically, beverage products in cans or bottles are stored in the form of only one or six-packs on shelves in the refrigerated display space of the cabinet. To purchase a drink, the customer opens one of the doors and reaches out into the refrigerated cabinet to find the desired product from the shelf.

US Pat. No. 5,347,827 to refrigerated showcases having refrigeration units disposed under refrigerated cabinets, for example to Ludick et al .; 5,402,654; 5,402,654; No. 5,417,079; And 5,417,081. In these refrigerated showcases, the refrigerated air from the refrigeration unit flows upwards from the equipment compartment through the flow duct along the rear wall of the cabinet, along the upper wall of the cabinet toward the front of the cabinet and from the front of the cabinet to the base deck. It flows downward to the bottom of the product display area, also called. Refrigerated air may also enter the product display area from the rear flow duct through a plurality of openings in the panel that separate the flow duct from the product display area. Refrigerated air from the product display area returns to the refrigeration unit through an air return inlet that opens through the cabinet bottom.

It was recognized that mounting refrigeration unit components on a common platform that could slide into the equipment compartment located at the bottom of the exhibition cabinet would make the refrigeration unit more accessible for cleaning and other maintenance. For example, US Pat. No. 5,678,421 to Maynard et al discloses a refrigerated showcase having a modular refrigeration unit that can be removed from the compartment bottom to facilitate maintenance. The condenser and its associated fan are mounted at the front end of the bottom tray. The evaporator and its associated fan are mounted to the rear of the vertical partition mounted to the rear end of the tray rear of the condenser / condenser fan assembly. The motor driving the evaporator is mounted to the compartment by a generally U-shaped plate with side flanges that are bolted to the compartment. The plate bracket, although effective for supporting the evaporator fan and motor assembly, provides a relatively high drag to the air flowing inside the evaporator fan. In addition, the flow of air through this relatively large plate mounting bracket can produce an undesirable level of noise.

It is an object of one embodiment of the present invention to provide a relatively low profile bracket for supporting a motor driving an evaporator fan.

It is an object of one embodiment of the present invention to provide a bracket for supporting a motor for driving an evaporator fan having a relatively low drag characteristic.

It is an object of one embodiment of the present invention to provide a bracket for supporting a motor for driving an evaporator fan having a relatively low noise characteristic.

It is an object of other embodiments of the present invention to provide a fan, a motor, and an improved mounting bracket assembly.

A bracket is provided for mounting a multi-bladed fan and a motor associated therewith to a support member. The bracket has a body having a plurality of legs extending out therefrom. The legs are arranged in an asymmetrical relationship with respect to the plurality of blades on the multi-bladed fan. The legs may also not be equal in number to the plurality of fan blades.

In one embodiment, the bracket has a substantially T-shaped body having a longitudinally extending member and a transverse member extending laterally to said longitudinally extending member, and extending outwardly from an end of said longitudinally extending member. A first leg, a second leg extending outwardly from the first end of the cross member, and a third leg extending outward from the second end of the cross member laterally opposed to the first end of the cross member. . Each leg may have a foot extending out therefrom and each foot has a hole therethrough to receive a fastener for mounting the bracket to the support member.

In another aspect of the invention, a motor having a drive shaft, a fan having a plurality of blades extending outwardly from and disposed circumferentially around a central fan hub mounted to the drive shaft of the motor, and configured to mount the motor A fan, motor, and bracket assembly is provided that includes a bracket having a body. The bracket has a body having a plurality of legs extending outwardly therefrom, each leg being configured to be mounted to the support structure. The legs are arranged in an asymmetrical arrangement with respect to the plurality of fan blades and do not have the same number and number of fan blades.

In one embodiment of the fan, motor, and bracket assembly, the bracket has a substantially T-shaped body having a longitudinally extending member and a transverse member extending laterally to said longitudinally extending member, and said longitudinally extending member. A first leg extending outwardly from an end of the member, a second leg extending outwardly from the first end of the cross member, and an outwardly from the second end of the cross member laterally opposed to the first end of the cross member. A third leg that extends. The body is provided with at least one hole for receiving a fastener for mounting the motor to the body. Each leg has a foot extending therefrom and having a hole therethrough for receiving a fastener for mounting the bracket to the support member.

For further understanding of these objects of the present invention, reference will now be made to the following detailed description of the invention which should be read in conjunction with the accompanying drawings.

1 is a side cross-sectional view of a refrigerated showcase equipped with a bottom mounted refrigeration unit cassette.

2 is a side cross-sectional view taken along line 2-2 of FIG.

3 is a perspective view of the refrigeration unit cassette of FIG. 1 showing a pair of evaporator fan / motor assemblies mounted therein.

4 is a partial side cross-sectional view of a fan, motor, and bracket assembly in accordance with the present invention.

Figure 5 is an end view taken along line 4-4 of Figure 4 with the motor removed for clarity.

Fig. 6 is a trial showing an embodiment of the support bracket of the present invention shown in Figs. 4 and 5;

Figure 7 is a perspective view showing another embodiment of the support bracket of the present invention.

Referring now to FIGS. 1 and 2, in particular, an internal product display space 100 for holding products 110 to be purchased, such as, for example, bottle or can soda, milk, water, juice, fruit drinks, beer, and other beverages, and the like. A chilled cold beverage showcase 10 comprising a is shown. While the present invention will be described herein with reference to the illustrated embodiment of the chilled cold beverage showcase, the present invention is intended to be maintained in a controlled environment, for example livestock meat, poultry meat, fish, dairy products, packaged frozen food and It should be appreciated that the invention may be applied to other refrigerated display showcases displaying perishable and frozen foods and beverages, including other products.

The beverage showcase 10 is disposed separately from the refrigerated internal product display space 100 and the refrigerated internal product display space 100 and has a separate equipment compartment in which heat transfer can be blocked from the refrigerated internal product display space 100. A cabinet 20 forming 55. The cabinet 20 has an enclosing sidewall structure comprising an upper wall 22 and a rear wall 34, a front wall 32 and opposing and generally vertically extending sidewalls 36, 38. The cabinet also includes a lower wall 24 disposed between the refrigerated interior product display space 100 located at the top and the equipment compartment 55 located at the bottom. The interior product display space 100 may be accessed through an access opening that is an open area in front of the cabinet in the embodiment shown from the outside of the cabinet 20. This open area may be covered as in the embodiment shown by at least one door 40 that is open to the surrounding environment or mounted to the cabinet 20. The door 40 extends across the open area and has a transparent viewing area, such as a glass panel, where at least a portion of the interior product display space 100 can be observed. The door 40 can be selectively positioned between a closed position that covers the open area and an open position where the consumer can access the internal product display space 100 to move the product for purchase. Although the embodiment of the display showcase 10 shown in the figures has only one door 40, the display showcase may have one, two and three or more doors collectively covering the open area when in the closed position. You should know that you can. The door or doors 40 may be mounted to the cabinet 20 in a conventional manner, for example on a hinge for pivotal movement between open and closed positions or on a track for sliding movement between open and closed positions. .

In the illustrated embodiment, the upper wall 22, lower wall 24, rear wall 34 and sidewalls 36, 38 are refrigerated internal product display space 100 from an environment outside the internal product display space 100. Heat transfer is cut off to insulate it. A plurality of shelves 112 are disposed within the interior product display space 100. Shelf 112 is adapted to support a particular product to be displayed for purchase. The particular number, arrangement and configuration of the shelves 112 is not closely related to the present invention and is within the general discretion of one of ordinary skill in the art for selecting a particular product to be displayed.

The rear panel 134 is provided spaced inwardly of the rear sidewall 34 to partially establish the refrigerated air supply duct 104 between the rear sidewall 34 and the rear panel 134. The interior product display space 100 in the refrigerated interior of the display cabinet 20 is defined by the top wall 22, the bottom wall 24, the side walls 36, 38 and in part by the respective rear wall 34 and The boundary is defined by the back panel 134. In the illustrated embodiment, the refrigerated air is partially inside the air outlet 109 at the upper end of the air supply duct 104 and partially through the plurality of openings 135 provided in the rear panel 134. Enter into the product display space 100 to cool the products displayed in the. The refrigerated air exits from the product display space 100 through the opening 102 provided in the lower wall 24.

The equipment compartment 55 is located in the cabinet 20 below the bottom wall 24 and is separated by the bottom wall 24 from the refrigerated internal product display space 100 of the cabinet 20. The bottom wall 24 forms a common wall separating the refrigerated interior space and the equipment compartment. The bottom wall has a top surface that forms the bottom or bottom plate of the interior product display space 100 and has a bottom surface that faces the refrigerated cassette 50 housed within the equipment compartment. The refrigeration unit 15 includes an evaporator 60 and at least one combined evaporator fan / motor assembly 62, a condenser 70 and at least one combined condenser fan / motor assembly 72, and a compressor 74. Include. The evaporator 60 and its associated evaporator fan / motor assembly 62 are housed in a first section 53 of the refrigeration unit cassette 60, the first section 53 being condenser 70 and its associated. The condenser fan / motor assembly 72 and the compressor 74 are separated by a dividing wall 68 from the second section 57 of the refrigeration unit cassette 50 in which it is housed.

Evaporator 60, condenser 70 and compressor 74 are closed loop refrigerant circulation circuits (not shown) in a conventional manner to cool air from internal product display space 100 through known Carnot cycles. Is coupled to. The condenser fan / motor assembly 72, which is typically a single fan and motor, is provided with a front grille 12 provided at the lower front of the cabinet 20, from the outside of the refrigerated showcase 10, such as its external surroundings, for example. ), And through the condenser 70, is normally only operable when the compressor 74 is in operation to suck air. As the outside air passes through the condenser 70 in a heat exchange relationship with the refrigerant passing through the condenser by the compressor 74, the refrigerant is cooled and the air is heated. This air is exhausted out of the compartment 55 through the opening at the back of the cabinet to cross the condenser 70 and return to the external environment. Some of the ambient air entering the equipment compartment passes over the compressor 74 to help cool the compressor.

The cooled refrigerant passes from the condenser 70 to the evaporator 60 through a closed loop refrigerant circulation circuit (not shown). One evaporator fan / motor assembly 62 or a plurality of evaporator fan / motor assemblies may be located in the evaporator compartment of the refrigeration cassette 50 through the air return inlet opening 102 of the lower wall 24 from the interior product display space 100. Negative air, and then return the air through evaporator 60 to the refrigerated air supply duct 104 and through the refrigerated air supply duct 104 to the product display space 100. As the circulating air passes through the evaporator 60, the air is cooled in a heat exchange relationship with the cooled refrigerant circulated through the evaporator 60 by the compressor 74, and the refrigerant is heated and evaporated. The evaporator fan 62 is refrigerated from the evaporator compartment 53, through an opening in the return air outlet 108 and the refrigerated air supply duct 104 located at the rear of the bottom wall 24 behind the compartment. To the internal product display space 100, the refrigerated air is circulated again across the evaporator 60.

The cover plate 120 is disposed above the return air inlet 102 in a very spaced relationship with the lower wall 24 to form a flow path between the cover plate 120 and the lower wall 24, through which the flow path is located. Refrigerated air returning from the product display space 100 flows to the air return inlet 102. The cover plate 120 covers the air return inlet 102, whereby leakage or leakage from the product in the product display space 100 flows into the evaporator compartment of the refrigeration unit 15 to direct the evaporator and / or evaporator fan assembly. To prevent contamination; In addition, the cover plate 120 has a lower area of the product display space 100 so that the refrigerated air is directed downward to the air return inlet 102 of the lower wall 24 below the cover plate 120. As it approaches, it flows outwards toward the enclosure walls of the cabinet. In doing so, the refrigerated air passes through the product to cool the product on its lower shelf more evenly and prevent the refrigerated air from directly converging directly to the return air return inlet 102. In one embodiment, the cover plate 120 extends substantially vertically downward from there to the lower wall 24 to support the cover plate 120 above the air return inlet 102 of the lower wall 24. Flange 126. A plurality of circumferentially spaced openings 125 are provided in the circumferential flange 126 to form an air passage connecting the refrigerated product display space 100 in flow communication with the air return inlet 102.

Referring now particularly to FIG. 3, the refrigeration unit cassette 50 comprises a generally rectangular box-shaped structure, which box-shaped structure comprises an upper flange 52, a base plate 54 and an upper flange 52 and a base plate. It has an enclosing structure 56 of side plates extending generally vertically between 54 and comprising a front plate 56A, a back plate 56B, and opposing side plates 56C. The dividing wall 68 separates the interior of the refrigeration unit cassette 50 into the first section 53 described above, ie the evaporator compartment and the second section 57, the condenser / compressor compartment. It extends between opposing side plates 56C from the inner upper front region to the rear plate 56B. The opening 51A is opened to allow air flow communication with the air return inlet 102 of the lower wall 24, where air returning from the refrigerated product display space 100 returns to the evaporator compartment 53. The one or more evaporator fan / motor assemblies 62 enter the evaporator compartment upstream of the evaporator 60 to introduce air from the product display space 100 into the evaporator compartment 53 and to pass the air through the evaporator 60. It is arranged in the part 53. The condenser 70, its associated condenser fan / motor assembly 72 and the compressor 74 are mounted to a common support plate configured to be mounted to a base plate 54 that forms the bottom of the cassette refrigeration unit 50. An opening 59 is provided in the front plate 56A where ambient air enters from the store environment by the condenser fan 72 through the grille 12 of the lower front wall of the cabinet and then passes through the condenser 70. Base plate 54 may be slidably mounted within compartment 55 to facilitate placement of cassette 50 in and out of compartment 55 to facilitate maintenance of the refrigeration equipment. . A condensate tray 76 may be provided below the evaporator 60 to collect condensate dripping from the condenser 70 and the evaporator 60 and to collect condensate that drains the collected condensate to the waste line. have. Condensate tray 76 serves as a condensate evaporation tray where condensate collected therein is evaporated by the hot air as it passes over condensate tray 76.

The sealing member 58 is located between the lower wall 24 and the refrigeration unit cassette 50, and the lift device 150 separates the refrigerated internal product display space 100 from the equipment compartment 55. The refrigeration unit cassette 50 is positioned in a sealing relationship with the 24. The sealing member 58 may be mounted to the lower surface of the lower wall 24 around the opening 102 in the lower wall 24 and, as shown, the upper flange 52 of the refrigeration unit cassette 50. It may be mounted on or simply held on the bottom surface of the. The sealing member 58 extends around the opening 51 of the upper flange 52, which is at least substantially the same size as the opening 102 of the lower wall 24, and also the lower wall disposed behind the opening 51. It extends around the opening 108 of 24. The sealing member 58 is provided with refrigerated air returning from the product display space 100 to the refrigeration unit 15 bypasses the evaporator 60 and instead the inlet from the air return inlet 102 to the air supply duct 104 ( 108) to prevent direct flow. The sealing member 58 is also provided with ambient air from the outside of the refrigeration unit cassette 50 such as ambient air introduced to pass through the condenser 70 through the front grille 12. 102 and through the inlet opening in the upper flange 52 of the refrigeration unit cassette 50 to prevent it from entering the refrigerated air returning to the refrigeration unit 15.

Referring now to FIGS. 4 and 5, each evaporator fan / motor assembly 62 includes a fan 63, a motor 90, and a support bracket 80. The fan 63 has a plurality of blades 63 arranged at circumferentially spaced intervals around the central hub 64, for example four blades arranged at intervals of 90 degrees around the circumference of the hub. Motor 90 may be any conventional fan motor having drive shaft 92 extending around central longitudinal axis 91. The central hub 64 is conventionally mounted to the drive shaft 92 of the coupled motor 90. Motor 90 is mounted to support bracket 80 mounted to a stable support member such as fan shroud 96.

Referring now to FIGS. 6 and 7, in the illustrated exemplary embodiment of the present invention, the bracket 80 extends laterally across the longitudinal member 84 and the proximal end of the longitudinal member 84. It is generally a three leg structure with a T-shaped body 82 with a transverse member 86, one leg 85 extending outward from the distal end of the longitudinal member 84, and having a pair of legs ( 87, 89 extend outwards from opposite ends of traverse member 86. Each leg 85, 87, 89 has a foot 98 extending outward from its distal end. Each foot 98 has a mounting hole 99 through it. The support bracket 80 may be mounted to the evaporator housing 96 by fasteners inserted through mounting holes 99 and secured to the evaporator fan shroud, such as bolt 92 screwed into the manifold. .

The longitudinal member 84 of the support bracket 80 has a pair of mounting holes 93 therethrough. The evaporator fan / motor assembly 62 is a longitudinal member 84, for example by means of fasteners inserted through mounting holes 93 and fixed to the casing of the motor 90, such as bolt 92 screwed into the motor casing. ) Is mounted. The motor 90 is mounted underneath the longitudinal member 84, whereby the fan 63, conventionally mounted to the drive shaft of the motor 90, allows the air flow to pass through the evaporator 60. It is appropriately positioned in each hole 65 of 64.

The fan / motor assembly support bracket 80 of the present invention provides a very limited profile to the air flow entering the evaporator 60. Thus, the support bracket 80 does not significantly spread the air flowing past the bracket and produces no drag. In addition, the legs 85, 87, 89 of the bracket 80 are arranged in an asymmetrical arrangement with respect to the plurality of blades 61 on the fan 63. In the embodiment of the bracket 80 shown in FIG. 6, the two legs 87, 89 extend vertically outward from the body 82 of the bracket at opposite ends of the cross member 86. In the embodiment of the bracket 80 shown in FIG. 7, the two legs 87, 89 extend outwardly from the body 82 of the bracket at opposite ends of the transverse member 86 but are not vertical. In addition, in the embodiment of the bracket 80 shown in FIG. 7, the two legs 87, 89 are connected at their distal ends by additional cross members that further provide structural rigidity to the bracket.

In any embodiment of the bracket 80, the three legs of the support bracket 80 are generally arranged in a T-shaped arrangement, while the four blades 61 of the fan 63 are at the same spacing, which is the usual way, That is, it is arranged 90 degrees apart around the central longitudinal axis 91 through the motor 90. Thus, the number of legs is not equal to the number of fan blades 61, and the three legs 85, 87, 89 of the support bracket 80 are asymmetrical with respect to the four blades 61 of the fan 63. Is placed. Thus, for example in the case of a four blade fan and a symmetric four leg support bracket, the likelihood of periodic harmonics and the resulting noise increase produced when the fan blade rotates simultaneously through the corresponding number of legs Is prevented.

For the purpose of facilitating the description and understanding of the present invention, the support bracket 80 has been described herein with reference to an embodiment of three legs and four blade fans 63 as shown in the figures. Those skilled in the art will recognize that modifications as some may have been made above, may be made in the depicted embodiments without departing from the spirit and scope of the invention. For example, if the fan / motor assembly comprises five blade fans, a three-legged support bracket or a four-legged bracket that is transverse may be used in accordance with the present invention, in which case the number of legs is Not only is it the same as the number of fan blades, but the positioning of the bracket legs is asymmetrical with respect to the blades of the five blade fans. To support a fan / motor assembly with a fan having three circumferentially symmetrically spaced blades, even a three-legged support bracket may be used in accordance with the present invention, which is a T-shaped support bracket (80). This is because the three support legs 85, 87, 89 of the &lt; RTI ID = 0.0 &gt;

Claims (12)

A bracket for mounting a fan and a coupled motor to the support member, the fan having a plurality of blades extending outwardly from and spaced circumferentially around the central hub mounted to the drive shaft, The bracket includes a body configured to mount a motor thereon, the body having a plurality of legs extending outwardly therefrom, each leg configured to be mounted to a support member, the plurality of legs with respect to the plurality of fan blades. Brackets arranged in an asymmetrical arrangement. The bracket of claim 1 wherein the plurality of legs of the bracket are not equal in number to the plurality of fan blades. The bracket of claim 1 wherein the body of the bracket comprises a substantially T-shaped structure having a member extending longitudinally and a transverse member extending laterally to the longitudinally extending member. 4. The legs of claim 3 wherein the plurality of legs comprise a first leg extending outwardly from an end of the longitudinally extending member, a second leg extending outwardly from the first end of the cross member, and a first end of the cross member. And a third leg extending outwardly from the second end of the laterally opposite cross member. The bracket of claim 1, wherein each of the plurality of legs has a foot extending out therefrom, each foot having a hole therethrough to receive a fastener for mounting the bracket to the support member. The bracket of claim 1, further comprising at least one hole in the body for receiving a fastener for mounting a motor to the body. A motor having a drive shaft extending along the central axis, A fan having a plurality of blades extending outwardly from a central hub mounted to the drive shaft of the motor and disposed at circumferentially spaced intervals thereabout; A bracket having a body configured to mount the motor thereto, The body has a plurality of legs extending out therefrom, each leg configured to be mounted to a support structure, the plurality of legs spaced about a central axis in an asymmetrical arrangement with respect to the plurality of fan blades, and the plurality of legs Is not the same number as the plurality of fan blades assembly. 8. The assembly of claim 7, wherein the fan has four blades and the bracket has three legs. 9. The assembly of claim 8, wherein the four blades are disposed at evenly spaced intervals in the circumferential direction and the three legs are arranged in a substantially T-shaped arrangement. A motor having a drive shaft, A fan having a center hub mounted to a drive shaft of the motor, a plurality of blades extending outwardly from the center hub and disposed at circumferentially spaced intervals thereabout; A substantially T-shaped body structure having a longitudinally extending member and a transverse member extending laterally to said longitudinally extending member, a first leg extending outwardly from an end of said longitudinally extending member, said A bracket having a second leg extending outwardly from the first end of the cross member and a third leg extending outwardly from the second end of the cross member laterally opposed to the first end of the cross member, Each leg is configured to be mounted to a support structure, and wherein the first, second, and third legs are disposed in an asymmetrical arrangement with respect to the plurality of fan blades. 11. The assembly of claim 10, wherein each of the legs has a foot extending out therefrom, each foot having a hole therethrough to receive a fastener for mounting the bracket to the support member. The assembly of claim 10 further comprising a pair of holes in the longitudinally extending member of the body for receiving a fastener for mounting a motor to the body.

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