MX2008012798A

MX2008012798A - An air mover cover for a direct current air conditioning system.

Info

Publication number: MX2008012798A
Application number: MX2008012798A
Authority: MX
Inventors: Bryan D Simmons; Eduardo Leon; Matthew Cowling; Bisher J Rayyahin
Original assignee: Emerson Network Power Energy
Priority date: 2006-04-04
Filing date: 2007-03-29
Publication date: 2008-11-14
Also published as: WO2007114909A3; US20070227177A1; WO2007114909A2; EP2011379A2; CA2648279A1; BRPI0710307A2; CN101438639A

Abstract

An evaporator air mover cover for a direct current (DC) powered variable capacity air conditioning system having a housing enclosing an evaporator assembly. The housing defines an air intake opening for intaking air from an enclosed environment into the evaporator assembly. The evaporator air mover cover includes a single piece seamless structure positioned over the air intake opening for covering at least a portion of the air intake opening. Further, the evaporator air mover cover allows air from the enclosed environment to flow through the air intake opening and into the evaporator assembly.

Description

AIR MOVING COVER FOR DIRECT CURRENT AIR CONDITIONING SYSTEM FIELD OF THE INVENTION The present disclosure is concerned with direct current (CD) air conditioning systems that include an air mover cover for such systems.

BACKGROUND OF THE INVENTION The statements in this section only provide background information pertaining to the present disclosure and may not constitute prior art. Direct current (DC) environmental temperature control (ETCS) systems, also referred to as air conditioning systems, are often used to control temperature inside enclosed environments where ETCS alternating current (AC) is not feasible , desirable or reliable. For example, in environments enclosed by structures that are remotely located where AC power is not available or conveniently accessible or where a backup air conditioning system is necessary in the event that AC power is interrupted or wherein a CD air conditioning system is more desirable than an AC air conditioning system. In. In general, CD air conditioning systems have a appropriate capacity to efficiently control the temperature of environments enclosed by smaller structures or constructions. For example, CD air conditioning systems are well suited to control temperature inside service sheds, portable or mobile structures and electronic component cabinets and service structures or equipment such as electronic wireless cellular communications cabinets and cabinets. battery backup. Such smaller structures can be located in a wide variety of external locations that present a myriad of rigorous outdoor environmental conditions that affect the temperature within the structures. That is, the structures can be exposed to a wide range of external temperatures, for example, -30 ° C to 55 ° C, variable solar loads and various forms of precipitation that can all affect the internal environmental temperature. In the case of equipment cabinets, the requirements for temperature control can be severe in order to prevent damage to frequently expensive equipment and not terribly robust inside. Thus, the use of CD air conditioning systems is often desirable to actively control the temperature of the enclosed environment of such smaller structures. In addition, in many cases, the Efficiency, consistency and reliability are critical needs of the CD air conditioning system. Commonly, CD air conditioning systems include a condenser assembly and an evaporator assembly both of which are placed within a housing. In operation, the evaporator assembly receives air from an environment enclosed through a first hole in the housing and an air mover drives the air through a heater or an evaporator heat exchanger to condition the air (ie, air). , to heat or cool the air) before emitting the air through a second hole in the housing in the enclosed environment. In some known designs, an air mover cover can be mounted over the first hole to allow air to the evaporator assembly. Commonly, these covers are made of sheet metal having edges that are sealed together by using a sealant, such as a vulcanizing sealer at room temperature or by welding the edges together. These seals or welds are time consuming to apply, costly and prone to failure. Over time, these seals and / or welds may deteriorate, which may compromise the effectiveness of the evaporator assembly.

BRIEF DESCRIPTION OF THE INVENTION In accordance with one aspect of the present disclosure, an evaporator air mover cover for a direct current (DC) variable capacity air conditioning system having a housing that encloses a set of evaporator. The housing defines an air intake port for introducing air from an environment enclosed in the evaporator assembly. The air mover cover of the air evaporator includes a seamless structure or one-piece connections placed over the air intake port to cover at least a portion of the air intake port. In addition, the air mover cover of the evaporator allows air from the enclosed environment to flow through the air intake port and the evaporator assembly. In accordance with another aspect of the present disclosure, there is disclosed a direct current (DC) variable capacity air conditioning system having a housing defining an air intake port and an evaporator assembly enclosed in the housing and positioned adjacent the air intake port to receive air from an enclosed environment. The system further includes an air mover cover comprising a seamless structure or joints in one piece and placed over the air intake orifice to cover at least a portion of the evaporator air mover. The air mover cover allows air from the enclosed environment to flow through the air intake orifice of the evaporator assembly. According to yet another aspect of the present disclosure, a variable capacity direct air (CD) power conditioning air system is described having a housing defining an air intake port and an evaporator assembly including a plurality of components enclosed in the housing and adjacent to the air intake port. The system further includes an evaporator air mover cover having a transparent panel placed over the air intake orifice to cover at least a portion of the evaporator assembly that includes at least a portion of the components. The portion of the components is visible through the transparent panel. According to still another embodiment of the present disclosure, a variable capacity direct air (CD) energy conditioning air system is described having a housing defining an air intake port and an evaporator assembly enclosed in the housing and placed adjacent to the air intake hole. The system also includes a cover of the evaporator air mover that includes a protection element and a sieve that has At least one edge, the cover of the evaporator air mover defines a second orifice. The evaporator air mover cover is placed over the air intake port to cover at least a portion of the evaporator air mover. The protection element is placed at least partially around the second hole, the screen is placed on the second hole and the at least one edge of the screen is placed on the protection element to prevent the at least one edge from being exposed.

BRIEF DESCRIPTION OF THE FIGURES The figures described herein are for purposes of illustration only and are not intended to limit the scope of the present disclosure in any way. Figure 1 is a block diagram of a variable capacity air conditioning system (VCACS) of direct current (DC) energy that includes a cover of the evaporator air mover according to various modalities, connected to a structure that It encloses an environment to be thermally conditioned by the variable capacity air conditioning system. Figure 2 is a detailed perspective view of a portion of the VCACS illustrating various components of the VCACS, according to various embodiments of the present disclosure.

Figure 3 is a front view of a cover of the air mover of the evaporator according to various embodiments of the present disclosure. Figure 4 is a perspective view of the air mover cover of the evaporator of Figure 3. Figure 5 is a front view of the VCACS according to various embodiments of the disclosure. Figure 6 is a front view of a screen according to various embodiments of the present disclosure. Figure 7 is a side cross-sectional view of the air mover cover of the evaporator of Figure 1. Figure 8 is an exploded view of section A, shown in Figure 7, illustrating a protective element for a cover of the air mover of the evaporator according to various embodiments of the present disclosure.

DETAILED DESCRIPTION Additional areas of application of the present disclosure will become apparent from the detailed description provided hereinbelow. It should be understood that the detailed description and specific examples, insofar as they indicate several preferred embodiments, are proposed for purposes of illustration only and are not intended to limit the scope of the disclosure. Additionally, the elements, functions and advantages of the present disclosure can be obtained independently in several modalities or can be combined in still other modalities. Figure 1 illustrates a variable current direct current (CD) energy conditioning air system 10 having a cover of the air mover of the evaporator 21 according to one or more embodiments described later herein. The variable capacity air conditioning system (VCACS) of CD 10 is connected to a wall of a structure 14 enclosing an environment 18 to be thermally conditioned by the VCACS of CD 10. The VCACS CD 10 can operate using any source of appropriate CD power (not shown) such as one or more CD batteries or a converted AC power supply (AC). The structure 14 may be any construction, shed, cabinet, cabinet, portable or mobile structure, or any other structure that encloses an environment desirous of being thermally controlled by the variable capacity air conditioning system of CD 10. For example, the structure 14 can be an enclosure of electronic components and / or equipment, such as an enclosure of cellular wireless communication electronic components or battery backup enclosure, where it is important to keep the enclosed environment 18 at a desired temperature to prevent damage to the enclosure. the components and / or systems enclosed. The VCACS 10 is configured to provide heating and cooling to maintain a substantially constant temperature of the enclosed environment 18 of the structure 14. The VCACS 10 and the structure 14 may comprise a telecommunication station, eg, a wireless telecommunication station, where the. structure 14 is a cabinet of electronic components and telecommunication equipment, for example, a cabinet of electronic components and wireless telecommunication equipment. The VCACS 10 generally includes a housing 12 enclosing a capacitor assembly 34, an evaporator assembly 38 including an evaporator skirt 32 and a variable speed compressor 42 connected to the condenser and evaporator assembly 34 and 38 via refrigerant lines 46. The housing 12 defines an air intake port 17 for introducing air from the enclosed environment 18 to the evaporator assembly 38 (indicated generally by the arrow 16) and an air outlet hole 19 for emitting air from the set of air. evaporator 38 to enclosed environment 18 (indicated generally by arrow 20). The cover 21 of the air mover of the evaporator 21, described in more detail later herein, is placed on the air intake port 16. Referring to Figure 2, in various embodiments, the evaporator assembly 38 includes a heat exchanger. hot of the evaporator 50, a heating mechanism 54, an air mover of the evaporator 58 and a circuit board 62, all of which are mounted to the bottom of the evaporator 32. The air mover of the evaporator 58 can be rotatably mounted to a plate of the air mover of the evaporator 66, which can then be mounted to the evaporator head 32. The air mover of the evaporator 58 can be a radial fan, an axial fan or a turbine, a variable speed backward curved impeller or any suitable air mover to move variable air capacities. In addition, the heating mechanism 54 may be any mechanism that produces appropriate heat such as an open wire resistive heater, radiator type heater, a chemical reaction type heater or any other heating device. The housing 12 (of Figure 1) can include a housing panel 70 and a housing bell 74. The housing panel 70, in various embodiments, is mounted on the air mover of the evaporator 58, evaporator heat exchanger 50 , heating mechanism 54 and circuit board 62 and coupled to the skirt of the evaporator 32 and / or hood of the housing 74. The panel of the housing 70 includes the air intake port 17 and a plurality of grid openings or fins forming in general the air outlet hole 19. In various embodiments, the cover of the The air mover of the evaporator 21 can be placed on the panel of the housing 70, thereby covering at least a portion of the air intake port 17. The cover of the air mover of the evaporator 21, in various embodiments is formed or manufactured as a structure without seams or joints in one piece. For example, the air mover cover of the evaporator 21 can be molded using thermal forming or injection molding, casting, stamping or pressing molding to form a one-piece structure without creased edges or jig seams. In addition, the air mover cover of the evaporator 21 can be manufactured from any suitable material such as a suitable polymer or plastic composite including clear polycarbonate, any suitable reinforced polyurethane or epoxy resin or any other material suitable for manufacturing an air mover cover of the one-piece seamless evaporator 21. Referring now to Figures 3-5 and 7, the air mover cover of the evaporator 21, in various embodiments, includes an inlet ring 48 that defines an orifice 52, a panel 53, a protection element 56 and a terminal block cover 90. The orifice 52 allows air from the enclosed environment 18 to flow through the air intake orifice 17. and to the evaporator assembly 38. Although the orifice 52 is circularly formed, the orifice 52 may be of other suitable shapes (e.g., ovals or rectangles) to allow air to flow through the air inlet orifice 17 and the assembly of evaporator 38 without deviating from the scope of the disclosure. Additionally, the air mover cover of the evaporator 21, in various embodiments, may include a plurality of openings that generally form the orifice 52 and allow air to flow through the air intake port 17 and the evaporator assembly 38 without deviate from the scope of this revelation. The inlet ring 48 surrounds the hole 52 and includes a rounded surface 51, as best seen in Figures 4 and 7. The rounded surface 51 increases the pressure at which air enters the evaporator assembly 38 and consequently the velocity of volumetric flow of air through the evaporator assembly 38. In various embodiments, the inlet ring 48 can be formed integrally with the air mover cover of the evaporator 21. However, in various other embodiments, the inlet ring 48 can being a separate part that is mounted to the air mover cover of the evaporator 21 or the air mover cover of the evaporator 21 may not include the entry ring 48, without deviating from the scope of this disclosure.

In various embodiments, the air mover cover of the evaporator 21 includes a screen 56 that can be mounted to the air mover cover of the evaporator 21. The screen 56 covers the orifice 52 and prevents debris from entering the evaporator assembly 38. The sieve 56 also prevents human contact with the air mover of the evaporator 58, thereby preventing potential injuries. The screen 56, in various embodiments, is a coarse metal screen, such as a fabric of physical elements having edges 64 as illustrated in Figure 6. However, the screen can be formed of other suitable materials, such as plastic , without deviating from the scope of this revelation. In various embodiments, the air mover cover of the evaporator 21 may include a protection element 68 that covers the edges 64. The protection element 68 provides protection from injuries by the edges 64 which may be sharp or protruding due to the processes of manufacture. Figure '8 is an exploded view of the section A, shown in Figure 7, illustrating the protection element 68. As shown in Figure 8, the protection element 68 includes a defense portion 72 that joins to a flat portion 76 in a generally orthogonal relationship. Additionally, a recess 77 is formed at the junction of the defense portion 72 and the flat portion 76. The edges 64 are placed against the flat portion 76 within the recess 77. As a result, the edges 64 are covered by the protection element 68, which prevents the edges 64 from being exposed, thereby preventing potential injuries. As best shown in Figure 5, in various embodiments, the panel 53 may be transparent and placed over the air intake port 17 to observe portions of the evaporator assembly 38, such as the circuit board 62, which has a plurality of components 82 placed in the evaporator assembly 38. The components 82 of the circuit board 62 can be various electrical elements, in which one or more status indicators 86 are included. The status indicators can be light-emitting diodes (LEDs) ) indicating the status of one or more elements of the VCACS 10. For example, the status indicators 86 can indicate whether the air mover of the evaporator 58 is functioning properly or whether the evaporator assembly 38 is properly heating or cooling the environment enclosed 18. The components 82 may also include a main DC power supply distribution line, a processor and / or a storage device. electronic storage and may include one or more status indicators. In addition, the components 82 can be used to control one or more elements of the VCACS 10, which includes for example, the evaporator assembly 38 and / or the capacitor assembly 34.

The air mover cover of the evaporator 21 may include, in various embodiments, the terminal block cover 90 for covering a terminal block 94 having a plurality of conductive connectors 96. The terminal block 94 may be connected to a source direct current supply (not shown) to one or more elements of the VCACS 10 including, for example, the evaporator assembly 38 including the circuit board 62 and the capacitor assembly 3. The cover 90 of the terminal block covers the conductors 96 and protects the conductors 96 from being inadvertently shorted. As best seen in the Figure. 5, the air mover cover of the evaporator 21 can be mounted to the housing panel 70. In various embodiments, the air mover cover of the evaporator 21 can be removed from the housing panel 70, thereby allowing access to the air mover. of the evaporator 58 to serve or replace the air mover of the evaporator 58. Although several embodiments indicated above describe the cover of the air mover of the evaporator 21 being a separate part of the housing panel 70, it should be understood that in various embodiments the cover of the air mover of the evaporator 21 and the housing panel 70 can be formed integrally formed as a single unit structure without deviating from the scope of this disclosure.

Additionally, although several embodiments indicated above describe the cover of the air mover of the evaporator 21 defining an orifice 52, it should be understood that the present disclosure is not limited in this manner. For example, the air mover cover 21 may not include a hole, but may instead be placed over the air intake port 17, such that a portion of the air intake port 17 is exposed, thereby enabling air to flow from the enclosed environment 18 through the air intake port 17 and the evaporator assembly 38.

Claims

CLAIMS 1. An evaporator air mover cover for a direct current (DC) variable capacity air conditioning system having a housing enclosing an evaporator assembly, the housing defining an air intake port for introducing air from an environment enclosed in the evaporator assembly, the cover of the evaporator air mover is characterized in that it comprises: a seamless structure or one-piece joints placed over the air intake orifice to cover at least a portion of the air intake orifice, the evaporator air mover cover allows enclosed environmental air to flow through the air intake orifice and the evaporator assembly. 2. The evaporator air mover cover according to claim 1, characterized in that the cover of the evaporator air mover defines an orifice. 3. The evaporator air mover cover according to claim 1, characterized in that the cover of the air mover of the evaporator further comprises an inlet ring. . The cover of the air mover of the evaporator according to claim 1, characterized in that the Inlet ring is formed integrally with the evaporator air mover cover. 5. The evaporator air mover cover according to claim 1, characterized in that the cover of the air mover of the evaporator includes a transparent panel placed over the air intake orifice to observe a plurality of components enclosed in the housing. . 6. The cover of the evaporator air mover according to claim 1, characterized in that it further comprises a screen having at least one edge, the screen placed on a hole defined by the cover of the air mover of the evaporator. 7. The cover of the air mover of the evaporator according to claim 6, characterized in that the screen is made of fabric of physical elements. 8. The evaporator air mover cover according to claim 6, characterized in that it further comprises a protection element, wherein the at least one edge of the screen is placed on the protection element to prevent the at least one One edge is exposed. 9. The cover of the evaporator air mover according to claim 8, characterized in that the protection element includes a flat portion and a portion of defense, the at least one edge of the sieve placed on the flat portion. 10. The cover of the evaporator air mover according to claim 9, characterized in that the screen includes a plurality of edges, each edge is placed on the flat portion of the protection element. 11. The evaporator air mover cover according to claim 1, characterized in that the cover of the evaporator air mover is configured to cover a terminal block mounted to the housing. 12. The cover of the air mover of the evaporator according to claim 1, characterized in that the structure without seams or joints in one piece is a molded piece of plastic. 13. A direct-current (DC) variable capacity air conditioning system, characterized in that it comprises: a housing defining an air intake orifice, an evaporator assembly enclosed in the housing and positioned adjacent to the intake orifice air to receive air from an enclosed environment, and an air mover cover comprising a seamless structure of one piece and placed over the air intake orifice to cover at least A portion of the evaporator air mover, the air mover cover allows air from the enclosed environment to flow through the air intake orifice and the evaporator assembly. 14. The system in accordance with the claim 13, characterized in that the cover of the air mover of the evaporator defines an orifice. 15. The system according to claim 13, characterized in that the cover of the air mover of the evaporator further comprises an inlet ring. 16. The system according to claim 15, characterized in that the inlet ring is formed integrally with the cover of the air mover of the evaporator. 17. The system in accordance with the claim 13, characterized in that the cover of the air mover of the evaporator has a transparent panel placed over the hole to observe a plurality of components enclosed in the housing. 18. The system in accordance with the claim 13, characterized in that the cover of the air mover of the evaporator according to claim 1, further comprises a screen having at least one edge, the screen being placed over a hole defined by the cover of the air mover of the evaporator. 19. The system according to claim 18, characterized in that the screen is made of fabric of physical elements. The system according to claim 18, characterized in that the cover of the air mover of the evaporator further comprises a protection element, wherein the at least one edge of the screen is placed on the protection element to prevent the At least one edge is exposed. 21. The system in accordance with the claim 20, characterized in that the protection element includes a flat portion and a defense portion, the at least one edge of the screen placed against the flat portion. 22. The cover of the evaporator air mover according to claim 21, characterized in that the screen includes a plurality of edges, each edge placed on the flat portion of the protection element. The system according to claim 13, characterized in that the cover of the air mover of the evaporator is configured to cover a terminal block mounted on the housing. 24. The system according to claim 13, characterized in that the structure without seams or seams of a single piece is a molded piece of plastic. 25. A direct current (DC) variable capacity air conditioning system characterized in that it comprises: a housing defining an air intake orifice, an evaporator assembly that includes a plurality of components enclosed in the housing and positioned adjacent to the orifice of air intake, and an evaporator air mover cover having a transparent panel placed over the air intake orifice to cover at least a portion of the evaporator assembly that includes at least a portion of the components, the portion of the components is visible through the transparent panel. 26. The system according to claim 25, characterized in that the plurality of components are mounted to a circuit board. 27. The system according to claim 25, characterized in that the plurality of components include at least one status indicator. 28. The system according to claim 27, characterized in that the status indicator is a light emitting diode. 29. The system according to claim 25, characterized in that the plurality of components control one or more elements of the system. 30. The system according to claim 25, characterized in that the cover of the air mover of the evaporator comprises a structure without seams or joints in one piece. 31. The system according to claim 31, characterized in that the structure without seams or joints of a single piece is a molded piece of plastic. 32. A direct current (DC) variable capacity air conditioning system characterized in that it comprises: a housing defining an air intake orifice; an evaporator assembly enclosed in the housing and positioned adjacent to the air intake port, a cover of the evaporator air mover including a protection element and a screen having at least one edge, the cover of the air mover of the evaporator. evaporator defines a second orifice, the cover of the air mover of the evaporator placed on the air intake orifice to cover at least a portion of the air mover of the evaporator, the protection element placed at least partially around the second hole, the screen placed on the second hole and the at least one edge of the screen placed on the protection element to prevent the at least one edge from being exposed. 33. The system in accordance with the claim 33, characterized in that the protection element includes a flat portion and a defense portion, the at least one screen edge positioned against the flat portion. 34. The system according to claim 35, characterized in that the screen includes a plurality of edges, each edge placed on the flat portion of the protection element. 35. The system according to claim 32, characterized in that the system further includes a terminal block having a plurality of conductive connectors mounted to the housing, the cover of the evaporator air mover positioned adjacent to the terminal block to cover the block. of terminal. 36. The system according to claim 32, characterized in that the cover of the air mover of the evaporator is mounted removably to the housing to allow access to the air mover of the evaporator.