JP4831207B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner for cooling a space in which a plurality of racks on which electronic devices such as servers are mounted are arranged.

  Conventionally, various cooling systems that cool a peripheral space of a rack on which high-performance electronic devices such as servers that generate high heat during operation are mounted have been used (for example, see Patent Document 1 below).

  In Patent Document 1, a plurality of rack rows in which a plurality of racks on which electronic devices are mounted are arranged, and an air conditioner is provided above the space formed between the rack rows so as to be suspended from the ceiling. An air conditioning system for cooling a space is disclosed. In this air conditioning system, the space formed between the rack rows is cooled by the air conditioner, and the cooled air is taken into the rack, thereby cooling the electronic devices in each rack.

  However, in the above air conditioning system, since an air conditioner is provided above the space formed between the rack rows, a certain amount of space must be secured above the rack, and it is used in a server room or the like having a low ceiling height. There was a problem that I could not.

  Thus, a rack type air conditioner has been proposed. The air conditioner is substantially the same in height and depth as a rack on which electronic devices are mounted, and has a casing in which an air intake port and an air outlet port are formed, and heat exchange between cooling water and air flowing inside. A water-cooled heat exchanger, a fan that circulates air from the inlet to the outlet, and a motor that rotationally drives the fan are provided. In this air conditioner, the air taken into the casing from the inlet by the drive of the fan is cooled in the heat exchanger and discharged from the outlet.

  When such an air conditioner is inserted into a rack row formed in the same manner as in Patent Document 1, the air in the space between the rack rows heated by exhaust heat from the electronic device is transferred to the air conditioner. The air is sucked and cooled, and the cooled air is discharged into the space between the rack rows. Thereby, the air in the space between the rack rows is cooled, and the electronic equipment in the rack is cooled.

JP 2003-166729 A

  Today's air conditioners are required to be multi-functional, and electrical component boxes provided with a control unit that drives and controls each operation mechanism of the devices tend to be larger. In the rack-type air conditioner, the fan circulates air from the intake port toward the air outlet in the casing, and a heat exchanger is disposed in the air flow path from the intake port toward the air outlet. Due to the increase in size of the electrical component box, it is difficult to secure a large space in the air flow passage, resulting in an increase in fan power and a decrease in air volume. On the other hand, the maintenance work of the control unit in the electrical component box becomes difficult only by arranging the electrical component box at the end of the casing while avoiding the position of the air flow passage.

  The present invention has been made to solve the above-described problem, and can prevent the installation of the electrical component box from causing an increase in the power of the fan or a decrease in the air volume, and maintenance work of the control unit in the electrical component box. It aims to make it easy to do.

The invention according to claim 1 of the present invention is an air conditioner (10) that is arranged in parallel to a rack (2) on which electronic devices are mounted, and cools air around the rack (2).
A casing (11) having an air intake port (11c) and an air outlet (11d);
A fan (12) that circulates air from the inlet (11c) to the outlet (11d) in the casing (11);
A heat exchanger (14) that is disposed in an air flow path from the intake port (11c) to the air outlet (11d) and that cools the air flowing through the casing (11) by the fan (12). ,
A control unit (31) is provided in an area in the casing (11) below the fan (12) and the heat exchanger (14), and controls the operation mechanism of the air conditioner (10). A flat electrical component box (30) provided in the
The electrical component box (30) has an upper edge (301) extending in a direction orthogonal to the direction in which the rack (2) and the air conditioner (10) are arranged, and the fan (12) in the casing (11). And a guide rail (60) extending in the orthogonal direction at a position below the heat exchanger (14), and below the bottom (302) of the electrical component box (30) and the bottom of the casing (302 The guide rail (60) guides the advancing / retreating operation of the upper edge portion with respect to the casing (11) in the orthogonal direction with a gap provided between the upper edge and the casing (11).

  In this invention, since the electrical component box is provided in the area in the casing below the fan and the heat exchanger, and the electrical component box does not block the air flow path, the installation of the electrical component box increases the power of the fan. The air volume is not reduced. In addition, since the electrical component box is guided by the guide rail in the direction perpendicular to the direction in which the rack and the air conditioner are arranged, the upper edge of the casing is positioned below the fan and the heat exchanger. Even when the flat electrical component box is arranged, the maintenance person can easily perform maintenance work of the control unit in the electrical component box by pulling the electrical component box out of the casing in the forward / backward movement direction. become. In addition, since the guide rail guides the advancing and retreating operation with a gap provided between the bottom of the electrical component box and the bottom of the casing, effective use of the gap, for example, electric wiring, etc. It becomes possible to dispose.

The invention according to claim 2 is the air conditioner according to claim 1, wherein the electrical component box (30) has a shape with an open top,
Between the area in the casing (11) in which the fan (12) and the heat exchanger (14) are disposed, and the area in the casing (11) in which the electrical component box (30) is disposed A closing plate (50) that covers and closes the upper part of the electrical component box (30) is provided across the inner walls of both sides (11j, 11k) of the casing (11),
The guide rail (60) is provided on both sides of the closing plate (50) extending in the orthogonal direction.

  In the present invention, a closing plate that covers and closes the upper part of the electrical component box is provided between the casing inner region in which the fan and the heat exchanger are disposed and the casing inner region in which the electrical component box is disposed. Therefore, even if condensed water falls on the electrical component box located below the heat exchanger, the electrical component box is protected from the water droplets. In addition, since the guide rail is provided on both sides of the closing plate extending in the orthogonal direction, the upper portion of the electrical component box is covered by the closing plate in a state where the electrical component box has entered the casing. It becomes possible to configure.

The invention according to claim 3 is the air conditioner according to claim 1 or 2, wherein the casing (11) in which the fan (12) and the heat exchanger (14) are disposed. Between the inner region and the inner region of the casing (11) in which the electrical component box (30) is disposed, a drain pan (505) that receives the condensed water generated in the heat exchanger is provided across the both regions. And
The closing plate (50) is provided integrally with the drain pan (505).

  According to this invention, since the closing plate is provided integrally with the drain pan, the closing plate and the drain pan can be provided with a small number of parts.

The invention according to claim 4 is the air conditioner according to any one of claims 1 to 3, wherein the electrical component box (30) includes a bottom (302) parallel to the floor surface. A front side portion (303) provided at an edge position of the bottom portion (302) which is the front side of the casing (11) in the pull-out direction, and a back side of the casing (11) in the pull-out direction. A back side (304) provided at the edge of the bottom (302), a left side (305) and a right side (306) connecting the front side (303) and the back side (304); Have
In order to provide drive control of each operating mechanism, comprising a wiring (6) connected to the control unit (31) in the electrical component box (30),
The front side portion of the casing (11) in the pull-out direction of the electrical component box (30), the casing (11) disposed at a position below the bottom (302) of the electrical component box (30) On the partial member (11n), the wiring (6) passes from the back side of the casing (11) through the lower part (302) of the electrical component box (30) to the lower surface of the partial member (11n). Is hooked to the back side (304) of the electrical component box (30) from the latched portion, and is pulled into the electrical component box (30) from the back side (304). The control unit (31) is connected.

  According to this invention, the wiring forms a gap between the lower part of the electrical component box and the bottom of the casing on the lower surface of the partial member that supports the bottom when the component box is pulled out on the front side of the casing. Using the back side of the casing, it is hooked through the bottom of the bottom of the electrical component box, and is further drawn from the latched portion to the back of the electrical component box, and is drawn into the electrical component box from the back side. Therefore, even when the electrical component box is pulled out in the pulling-out direction, the wiring can be made difficult to get entangled.

  Further, the invention according to claim 5 is the air conditioner (10) according to claim 4, wherein the wiring (6) extends from the hooking portion on the lower surface of the partial member (11n). The electrical component box (30) is temporarily latched on either the left side (305) or the right side (306) and from the latched portion on the left side (305) or the right side (306). It is drawn around the back side part (304) and drawn into the electrical component box (30).

  According to this invention, it is possible to prevent the wiring from dropping below the electrical component box and to prevent the wiring from causing any trouble in the operation of pulling out the electrical component box.

  The invention according to claim 6 is the air conditioner (10) according to claim 4 or claim 5, wherein the partial member (11n) is positioned on the front side of the casing (11). The casing (11) is in contact with the bottom surface (302) of the bottom (302) of the electrical component box (30) and is provided in a posture parallel to the bottom surface (302), and the electrical component box (30) It is a support part (11n) which supports the said bottom part (302) at the time of extraction operation | movement.

  According to the present invention, the wiring uses a gap between the lower part of the bottom of the electrical component box and the bottom of the casing on the lower surface of the support part that supports the bottom when the accessory box is pulled out on the front side of the casing. Then, it is hooked from the back side of the casing through the bottom of the bottom of the electrical component box, drawn from the latched portion to the back of the electrical component box, and drawn from the back into the electrical component box to the control unit. Since they are connected, even when the electrical component box is pulled out in the pull-out direction, the wiring can be made difficult to get entangled.

  According to the present invention, it is possible to avoid the installation of the electrical component box from causing an increase in the power of the fan and a decrease in the air volume, and it is also possible to easily perform the maintenance work of the control unit in the electrical component box.

It is a schematic plan view of the server room in which the air conditioning apparatus which concerns on one Embodiment of this invention is installed. It is a perspective view which shows the external appearance of an air conditioning apparatus. It is a perspective view which shows the internal structure of an air conditioning apparatus, and has shown the air conditioning apparatus of the state which removed the casing. It is a front view which shows the engagement state of the upper edge part of an electrical component box, and the guide rail of an obstruction board. It is the perspective view which looked at the obstruction board and the electrical component box part from the front. It is the perspective view which looked at the obstruction board and the electrical component box part from back. It is an internal side view which shows the wiring routing state in a casing. It is a bottom view which shows the wiring routing state with respect to an electrical component box. It is a figure which shows the top view of a control part. It is a front view of an electrical component box. It is a rear view of an electrical component box. It is sectional drawing at the time of seeing an electrical component box and a control part from the front side. It is a figure which shows schematic structure of the refrigerant circuit of an air conditioning apparatus. It is a front view which shows an electrical component box and the obstruction board which functions also as a drain pan. It is the side view which shows the closing plate which serves as a heat exchanger, the drain pan arrange | positioned under the heat exchanger, and the electrical component box, and is the figure which showed the obstruction board part which also serves as a drain pan as a sectional side view. It is a perspective view which shows other embodiment of the wiring with respect to an electrical component box. It is a schematic rear view which shows other embodiment of the wiring with respect to an electrical component box. It is a schematic side view which shows other embodiment of the wiring with respect to an electrical component box, and is a figure which shows the state by which the electrical component box was accommodated in the casing. It is a schematic side view which shows other embodiment of the wiring with respect to an electrical component box, and is a side view which shows the state by which the electrical component box was pulled out of the casing from the inside of a casing.

  Hereinafter, an air conditioner according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic plan view of a server room in which an air conditioner according to an embodiment of the present invention is installed. As shown in FIG. 1, a plurality of racks 2 on which electronic devices such as servers are mounted are provided in the server room 1. The front surface 2a of each rack 2 is formed with an intake port for taking air into the interior, and the rear surface 2b is formed with an air outlet for discharging the air.

  The plurality of racks 2 are arranged in a row in the width direction to form a rack row 3. The rack row 3 is formed in a plurality of rows (six rows in FIG. 1) in the server room 1. The plurality of rack rows 3 are arranged so that the front surfaces 2a or the back surfaces 2b of the racks 2 face each other. With this arrangement, a front space A facing the front surface 2a of each rack is formed in front of each rack 2, and a rear space facing the back surface 2b of each rack 2 is formed behind each rack 2. B is formed.

  The air conditioner 10 is inserted and arranged between the racks 2 in the rack row 3. For example, the air conditioner 10 is provided such that the front surface 11a of the casing 11 faces the front space A, and the back surface 11b faces the rear space B. A plurality of air conditioners 10 are provided in the server room 1, and are provided for each of the five racks 2 in the rack row 3 in this embodiment.

  Next, the configuration of the air conditioner 10 will be described. FIG. 2 is a perspective view showing the appearance of the air conditioner 10. FIG. 3 is a perspective view showing the internal structure of the air conditioner 10 and shows the air conditioner 10 with the casing 11 removed.

  As shown in FIGS. 2 and 3, the air conditioner 10 includes a casing 11, a fan 12, a motor 13 that rotationally drives the fan 12, and a heat exchanger 14. The fan 12, the motor 13, and the heat exchanger 14 are provided in the casing 11.

  In the present embodiment, the back surface 11b of the casing 11 is formed with an intake port 11c for taking in air therein, and the front surface 11a is formed with a blowout port 11d for discharging the internal air to the outside. A protective cover 11e made of a mesh member capable of air circulation is attached to the air outlet 11d.

  The front surface 11 a has one side portion 11 f rotatably attached to a side edge portion 11 g of the casing 11 on the front surface 11 a side, and the other side portion 11 h of the front surface 11 a is in contact with and away from the casing 11. It is configured to move in the direction. A handle 11i is provided in the vicinity of the side portion 11h of the front surface 11a. The operator inserts a finger into the handle 11i from a position facing the front surface 11a and pulls the handle 11i and the front surface 11a toward the front, thereby moving the front surface 11a in the direction of the arrow shown in FIG. It can be rotated. That is, the front surface 11a functions as an openable front door.

  Although not particularly illustrated, a protective cover made of a mesh member capable of air circulation is also attached to the intake port 11c on the back surface 11b of the casing 11.

  A partition base 21 for partitioning each fan 12 is attached to the front surface 11 a side in the casing 11. In this embodiment, since three each of the fan 12 and the motor 13 are provided, two partition tables 21 are provided. As shown in FIG. 3, the two partition tables 21 are arranged in parallel at a predetermined interval in the vertical direction in front of the casing 11.

  The fan 12 has an impeller constituted by a plurality of blades in a housing. The fan 12 is fixed to a frame 101 that forms a part of the casing 11 together with the motor 13 via a support member 102, and is also fixed to a partition 103 provided between the fan 12 and the heat exchanger 14. As shown in FIG. 3, the partition 103 is provided with an opening 101 a at each position where the fan 12 is attached, and each fan 12 has a suction port 22 on the back surface 11 b side of the casing 11 from the opening 101 a. It opens toward the heat exchanger 14. The blower outlet 23 of the fan 12 is arranged to open toward the side of the casing 11.

  In the casing 11, a closing plate 50 is further provided at a position below the lowermost fan 12 and the motor 13 and below the two heat exchangers 14. The closing plate 50 has a width extending from both side surfaces 11j and 11k of the casing 11, and is provided from the front surface 11a to the back surface 11b.

  The front side of the casing 11 is divided into four regions in the vertical direction by the two partition tables 21 and the closing plate 50. An electrical component box 30 is provided in a region below the closing plate 50. The configuration of the electrical component box 30 will be described later.

  The closing plate 50 is provided between the in-casing region 105 in which the fan 12 and the heat exchanger 14 to be described later are disposed, and the in-casing region 106 in which the electrical component box 30 is disposed, and separates the two regions. . The closing plate 50 covers and closes the upper part of the electrical component box 30.

  Two heat exchangers 14 and 14 are provided in the casing 11. Each heat exchanger 14 is a so-called fin-and-tube heat exchanger provided with a plurality of flat fins and a plurality of heat transfer tubes. The plurality of fins are provided so as to extend in the vertical direction, and are arranged in parallel in the horizontal direction at predetermined intervals. On the other hand, the plurality of heat transfer tubes are provided so as to extend in the arrangement direction (horizontal direction) of the plurality of fins and penetrate the plurality of fins. The heat transfer tube of the heat exchanger 14 is connected to a refrigerant circuit 500 described later.

  As shown in FIG. 3, the two heat exchangers 14 are arranged in such a manner that flat portions 141 made of fins and heat transfer tubes face each other, and the flat portions 141 are inclined with respect to the side surfaces 11 j and 11 k of the casing 11. ing. The two heat exchangers 14 are provided such that the end portions 143 and 143 on the front side of the casing 11 (on the fan 12 side) are close to a distance where they contact each other. Moreover, as for the two heat exchanger 14, each edge part 144,144 used as the back surface 11b side of the casing 11 is located in the side surfaces 11j and 11k vicinity of the casing 11. FIG. As a result, as indicated by an arrow C in FIG. 3, the air sucked from the intake port 11 c on the back surface 11 b side of the casing 11 enters the region 107 surrounded by the two heat exchangers 14, and the two heat exchangers 14, the air is guided to the front surface 11a side of the casing 11 by each fan 12, and is blown out of the casing 11 on the front surface side of the casing 11 from the air outlet 11d of the front surface 11a. When the ambient air drawn into the casing 11 by the fan 12 passes through the two heat exchangers 14, heat exchange is performed to cool the air.

  In addition, although illustration is abbreviate | omitted, in the casing 11, when the dew condensation occurs on the surface of each heat exchanger 14, a condensed water treatment mechanism that collects and discharges the condensed water generated in the heat exchanger 14 is provided. It is provided below each heat exchanger 14.

  The electrical component box 30 will be described. The electrical component box 30 has a flat plate shape in which a control unit 31 that drives and controls each operation mechanism of the air conditioner 10 is provided. The electrical component box 30 is perpendicular to the direction in which the rack 2 and the air conditioner 10 are lined up (in the direction of arrow A in FIG. 3) in the area inside the casing 11 below the fan 12 and the heat exchanger 14. 3 (in the direction of arrow B). In the present embodiment, the lower region in the casing 11 in which the electrical component box 30 is disposed is opened, and the space between the lower surface of the electrical component box 30 and the floor surface of the server room 1 located below the electrical component box 30 is open. The member of the casing 11 is not provided in the space.

  Both side portions of the closing plate 50 provided in the casing 11 are located in the vicinity of the side surfaces 11j and 11k side of the casing 11, and the both side portions extend in the arrow B direction in FIG. 3 along the side surfaces 11j and 11k. Both side portions of the closing plate 50 are formed as guide rails 60. The guide rails 60 formed on both sides of the closing plate 50 extend in the orthogonal direction (the direction of arrow B in FIG. 3) at a position below the fan 12 and the heat exchanger 14 in the casing 11.

  FIG. 4 is a front view showing an engaged state between the upper edge portion 301 of the electrical component box 30 and the guide rail 60 of the closing plate 50. 5 is a perspective view of the closing plate 50 and the electrical component box 30 as viewed from the front, and FIG. 6 is a perspective view of the closing plate 50 and the electrical component box 30 as viewed from the rear. For example, as shown in FIG. 4, the closing plate 50 includes a protruding portion 507 extending downward from both sides thereof, and further extending downward and fixed to the protruding portion 507 in the same manner as the protruding portion 507. Has a guide rail 60 provided with a bent portion 60 a bent in the inner direction of the casing 11. The closing plate 50 is attached to the frame 101 by, for example, the inside of the frame 101 from the front side of the frame 101 so that the protruding portion 507 and the guide rail 60 are positioned on the attachment member 11r provided on the frame 101. It is inserted toward When the closing plate 50 is housed in the frame 101, the protruding portion 507 and the attachment member 11r are coupled by bolting or welding. A spacer 601 is provided in the gap between the guide rail 60 and the closing plate 50.

  In the electrical component box 30, an upper edge portion 301 extending in a direction orthogonal to the direction in which the rack 2 and the air conditioner 10 are arranged (the direction of arrow B in FIG. 3) is placed on the bent portion 60 a of the guide rail 60. Thus, it is assembled to the closing plate 50 and the guide rail 60 so as to be locked so as to be movable in the orthogonal direction. As a result, the upper edge portion 301 can slide on the guide rail 60. Moreover, in the state where the electrical component box 30 is slid and stored in the frame 101 by the assembly, the upper portion of the opened electrical component box 30 is closed by the closing plate 50. The vertical dimension of the electrical component box 30 is set such that a gap is provided between the lower portion 302 of the electrical component box 30 and the lower edge portion 11 m of the casing 11. As described above, the guide rail 60 allows the upper edge 301 to move forward and backward with respect to the casing 11 in the orthogonal direction with a gap between the lower portion 302 of the electrical component box 30 and the lower edge portion 11m of the casing 11. Guided.

  3, 5, and 6, the upper edge portion 301 extends to the back surface 11 b side of the casing 11 from the main body portion 300 of the electrical component box 30, and the side end portion 301 a on the back surface 11 b side of the casing 11 is The shape protrudes to the side. Further, the attachment member 11r has a shape in which an upper end portion 11s on the front surface 11a side of the casing 11 protrudes upward. As a result, even if the electrical component box 30 is pulled out in the orthogonal direction, that is, from the front surface 11a of the casing 11 to the front outer side of the casing 11 until the rear side portion 304 of the electrical component box 30 comes out of the casing 11, The product box 30 is kept engaged with the casing 11 by the engagement between the side end portion 301a of the upper edge portion 301 and the upper end portion 11s of the attachment member 11r.

  The electrical component box 30 includes a bottom portion 302 parallel to the floor surface of the server room 1, a front side portion 303 provided at an edge position of the bottom portion 302 which is the front surface 11a side of the casing 11 in the drawing direction, and the drawing direction. , A rear side portion 304 provided at an edge position of the bottom portion 302 which is the rear side of the casing 11, and a left side portion 305 and a right side portion 306 that connect the front side portion 303 and the rear side portion 304. Further, the front side portion 303 is provided with a handle 307 for the operator to pull out the electrical component box 30 to the near side (in the direction of arrow B).

  Next, the wiring in the air conditioning apparatus 10 will be described. FIG. 7 is an internal side view showing a wiring routed state in the casing 11, and FIG. 8 is a bottom view showing a wiring routed state with respect to the electrical component box 30.

  As shown in FIGS. 7 and 8, the control unit 31 in the electrical component box 30 is connected to the wiring 6 that connects the control unit 31 and each operation mechanism of the air conditioner 10. In the casing 11, the electrical component box 30 is disposed at the lowermost portion of the casing 11, and each operation mechanism such as the fan 12 is provided above the electrical component box 30. Further, the casing 11 forms a part of the casing 11 at a position of the casing 11 which is a front surface 11 a side portion of the casing 11 in the drawing direction of the electrical component box 30 and which is a lower surface side of the bottom portion 302 of the electrical component box 30. A side edge (partial member) 11n is provided.

  The wiring 6 is routed from each operation mechanism (or a mechanism outside the machine) located above the casing 11 to the electrical component box 30 below the casing 11. At this time, as shown in FIG. 7, the wiring 6 passes from below the bottom portion 302 of the electrical component box 30 on the back surface 11 b side of the casing 11 to the lower surface of the side edge portion 11 n forming a part of the casing 11. 11p and is hooked on the lower surface 11p.

  The wiring 6 is further routed from the hooking portion of the lower surface 11p to the outer surface side of the rear side portion 304 of the electrical component box 30, and wiring ports 304a and 304b provided in the rear side portion 304 (see FIG. 3). Are drawn into the electrical component box 30 and connected to the control unit 31.

  In this embodiment, the wiring 6 is hooked to the lower surface 11p of the side edge portion 11n. For example, the casing 11 is on the front surface 11a side of the casing 11 as the side edge portion 11n. Provided in a position in contact with the lower surface of the bottom portion 302 in a posture parallel to the bottom portion 302 and supporting portion 11n for supporting the bottom portion 302 when the electrical component box 30 is pulled out. It is good also as what is hooked on the lower surface 11p of 11n.

  FIG. 9 is a plan view of the control unit 31. FIG. 10 is a front view of the electrical component box 30, and FIG. 11 is a rear view of the electrical component box 30. As shown in FIG. 9, the control unit 31 in the electrical component box 30 is provided with electronic components such as terminals, fuses, printed boards, connectors, and the like. Each wiring 6 drawn into the control unit 31 in the electrical component box 30 from the wiring ports 304a and 304b is connected to each electronic component in the electrical component box 30 as shown in FIG.

  A switch 7 for switching on / off driving of the fan 12 is disposed on the front surface 11a side of the control unit 31. The switch 7 is attached so as to protrude from the front side portion 303 of the electrical component box 30 to the front side of the electrical component box 30 through each switch port 303 a provided in the front side portion 303 of the electrical component box 30. ing.

  Thereby, the operator can operate the fan 12 to be driven or stopped by operating the switch 7 of the fan 12 from the front side of the air conditioner 10.

  FIG. 12 is a cross-sectional view of the electrical component box 30 and the control unit 31 when viewed from the front side. Furthermore, the control unit 31 includes a flat plate-shaped mounting portion 311 to which an electronic component 31a constituting a part of the control unit 31 is mounted, and the electrical component box 30 extending from the mounting portion 311 in a direction orthogonal to the mounting portion 311. A mounting jig 310 having a flat plate-like installation portion 312 to be installed on the bottom portion 302 is provided.

  In the control unit 31, the installation unit 312 is attached to the control unit 31 on the bottom 302 of the electrical component box 30 in a state where the electronic component 31 a is screwed to the attachment unit 311 and is attached by soldering or bonding.

  When the electronic component 31 a whose installation direction is defined only in the vertical posture is assembled as the control unit 31, the electronic component box 30 is first attached to the attachment unit 311. Then, the wiring 6 is connected to the electronic component 31a attached to the attachment portion 311. As shown in FIG. 12, the attachment jig 310 to which the electronic component 31 a after the connection is attached has an installation part 312 that connects the installation part 312 and the bottom part 302 on the inner surface of the bottom part 302 in the electrical component box 30. Installed as a parallel posture. According to the present embodiment, a large number of electronic components 31 a whose installation direction is defined only in the vertical posture can be arranged side by side in the horizontal direction in a space-saving manner on the control unit 31 on the flat plate in the bottom 302 of the electrical component box 30. As a result, it is not necessary to arrange the electronic components 31a having the specified installation posture in parallel in the vertical direction, so that the height of the electrical component box 30 can be suppressed as much as possible. Further, when the electronic component 31a is arranged in the electrical component box 30 using the mounting jig 310 in this way, the wiring 6 is connected to the electronic component 31a before the electronic component 31a is installed in the electrical component box 30. Therefore, the wiring connection work for the electronic component 31a is facilitated.

  Next, the refrigerant circuit of the air conditioner 10 will be described. FIG. 13 is a diagram illustrating a schematic configuration of a refrigerant circuit of the air conditioning apparatus 10.

  As shown in FIG. 13, the air conditioner 10 is connected by a refrigerant pipe 501 to a pump unit 55 that is configured separately from the air conditioner 10. The pump unit 55 includes a heat source side heat exchanger 52, a receiver tank 53, and a circulation pump 51.

  The refrigerant circuit 500 includes the heat exchanger 14 of the air conditioner 10, a circulation pump 51, a heat source side heat exchanger 52, a receiver tank 53, and a refrigerant pipe 501 connecting them. The pump unit 55 is provided in a place separated from the rack row 3 provided in the server room 1.

  The circulation pump 51 pumps the sucked refrigerant to circulate the refrigerant in the refrigerant circuit 500.

  The heat source side heat exchanger 52 has a first flow path 52a and a second flow path 52b formed therein, the first flow path 52a is connected to the refrigerant circuit 500, and cooling water flows through the second flow path 52b. The cooling water circuit 600 is connected. The heat source side heat exchanger 52 performs heat exchange between the refrigerant flowing through the first flow path 52a and the cooling water flowing through the second flow path 52b.

  The receiver tank 53 temporarily stores the refrigerant therein and adjusts the refrigerant circulation amount in the refrigerant circuit 500.

  The operation of the air conditioner 10 will be described.

  During normal operation, the air conditioning apparatus 10 performs normal operation (cooling operation) in which air outside the apparatus is taken in and cooled, and the cooling air is supplied to the outside of the apparatus. Specifically, a controller (not shown) drives the motor 13 to operate the fan 12 and drives the circulation pump 51 of the pump unit 55.

  When the motor 13 is driven by the controller, the air around the air conditioner 10 is taken into the casing 11 from the intake port 11c provided in the casing 11 when the fan 12 is driven to rotate. The taken-in air is sucked into the suction port 22 of the fan 12. Thus, an air flow is formed in the casing 11 from the rear to the front.

  Specifically, the air that has flowed into the interior from the intake port 11 c on the back surface 11 b of the casing 11 flows forward and passes between the plurality of fins of each heat exchanger 14. At that time, the air is cooled by exchanging heat with the refrigerant flowing through the heat transfer tubes.

  Air (cooling air) cooled by passing through the heat exchanger 14 reaches the periphery of the three fans 12 and is sucked from the suction ports 22 of the fans 12. Then, the cooling air sucked into each fan 12 is discharged from each air outlet 23 to the outside from an air outlet 11 d formed on the front surface 11 a of the casing 11.

  When the circulation pump 51 is driven during the normal operation, the refrigerant circulates in the refrigerant circuit 500. In the refrigerant circuit 500, the refrigerant first undergoes heat exchange with the cooling water in the heat source side heat exchanger 52 and changes in phase from gas to liquid. Specifically, the refrigerant that has flowed into the first flow path 52a of the heat source side heat exchanger 52 releases the latent heat and condenses into the cooling water flowing through the second flow path 52b. The condensed refrigerant flows out of the heat source side heat exchanger 52 and is pumped by the circulation pump 51 to the heat exchanger 14 side of the air conditioner 10.

  And the said refrigerant | coolant flows in into the heat exchanger tube of the heat exchanger 14 of the air conditioning apparatus 10, and heat-exchanges with the air which passes between some fins, and changes a phase from a liquid to gas. Specifically, the refrigerant flowing into the heat transfer tube evaporates by absorbing latent heat and sensible heat from the air passing between the fins in the heat transfer tube. Thereby, the air which passes between several fins is cooled with the refrigerant | coolant which distribute | circulates the inside of a heat exchanger tube.

  Thus, when normal operation is performed, when the air taken into the casing 11 passes through the heat exchanger 14, it is cooled by exchanging heat with the refrigerant circulating in the refrigerant circuit 500, and the casing 11 is cooled. Be blown out to the outside. Thereby, the air of the periphery (space which spreads ahead) of the air conditioning apparatus 10 is cooled.

  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made. For example, in the above embodiment, the closing plate 50 is provided, and this closing plate 50 covers the upper part of the electrical component box 30 and protects the control unit 31 in the 30 from dew condensation water or the like. The closing plate 50 and the drain pan (condensation water treatment mechanism) may be provided integrally.

  FIG. 14 is a front view showing the electrical component box 30 and the closing plate 50 that also functions as a drain pan. FIG. 15 is a side view showing the heat exchanger 14, the closing plate 50 also serving as a drain pan, and the electrical component box 30 disposed below the heat exchanger 14, and is a view showing the closing plate 50 portion also serving as the drain pan as a side sectional view. It is.

  For example, as shown in FIGS. 14 and 15, a side wall portion orthogonal to the upper surface 502 at a position on the upper surface 502 of the closing plate 50 that can surround the two heat exchangers 14 from four sides. 503 is provided. Thereby, the condensed water (condensation water) generated on the surface of the heat exchanger 14 can be collected in the side wall portion 503 that surrounds the two heat exchangers 14 from four directions. The inside of the side wall portion 503 that surrounds the two heat exchangers 14 from the four sides on the upper surface 502 portion of the closing plate 50 functions as a drain pan 505. The drain pan 505 is formed as a bowl having an upper surface opened. The drain pan 505 receives condensed water between the area in the casing in which the fan 12 and the two heat exchangers 14 are disposed and the area in the casing in which the electrical component box 30 is disposed with the both areas being separated. .

  Although not particularly shown in FIGS. 14 and 15, the drain pan 505 is formed with a discharge port for discharging the condensed water collected inside. In addition, the air conditioner 10 includes a drain pump for discharging the condensed water collected in the drain pan 505 from the discharge port to the outside of the apparatus through a drain hose.

  With such a configuration, even if condensed water is generated on the surface of the heat exchanger 14, the condensed water is first collected by the drain pan 71 and does not reach the control unit 31 in the electrical component box 30.

  Furthermore, another embodiment of the wiring 6 for the electrical component box 30 will be described. FIG. 16 is a perspective view showing another embodiment of the wiring 6 for the electrical component box 30, and FIG. 17 is a schematic rear view showing another embodiment of the wiring 6 for the electrical component box 30. 18 is a schematic side view showing another embodiment of the wiring 6 for the electrical component box 30, and shows a state in which the electrical component box 30 is housed in the casing 11, and FIG. 19 shows the wiring 6 for the electrical component box 30. It is a schematic side view which shows other embodiment, and is the side view which shows the state by which the electrical component box 30 was pulled out of the casing 11 out of the casing 11.

  In the embodiment of the wiring 6 for the electrical component box 30 shown in FIGS. 7 and 8, the wiring 6 passes from below the bottom portion 302 of the electrical component box 30 from the upper side of the back surface 11 b side of the casing 11 to the casing 11. It is hooked on the lower surface 11p of the side edge portion 11n, and is routed from the hooked portion of the lower surface 11p to the outer surface side of the rear side portion 304 of the electrical component box 30, and inside the electrical component box 30 from the wiring ports 304a and 304b. Has been drawn into.

  7 and 8, the wiring 6 is connected to the electrical component from the hooking portion k on the lower surface 11p of the side edge portion 11n (support portion 11n) as shown in FIGS. 15 and 16. It is once hooked on the right side 306 of the box 30, drawn from the hooking portion m in the right side 306 to the back side part 304 of the electrical component box 30, and pulled into the electrical component box 30 from the wiring port 304 b. You may do it. In addition, although not particularly illustrated, similarly, the wiring 6 is once latched from the above-described latching portion on the lower surface 11p to the left side portion 305 of the electrical component box 30, and from the latching portion in the left side portion 305 to the electrical component box. 30 may be drawn into the electrical component box 30 through the wiring port 304a.

  According to this embodiment, as shown in FIGS. 18 and 19, even when the electrical component box 30 is housed in the casing 11 (FIG. 18), the electrical component box 30 is pulled out of the casing 11 from the casing 11. Even in this state (FIG. 19), in both states, the wiring 6 does not fall below the electrical component box 30, and the wiring 6 does not interfere with the drawing operation of the electrical component box 30. Is possible.

  In addition, the refrigerant circuit 500 is not limited to the one in the present embodiment, and may be in any form as long as the air flowing through the heat exchanger 14 can be cooled using the phase change of the refrigerant.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or its use.

DESCRIPTION OF SYMBOLS 1 Server room 2 Rack 6 Wiring 10 Air conditioning apparatus 11 Casing 12 Fan 14 Heat exchanger 22 Suction port 30 Electrical component box 300 Main body part 301 Upper edge part 302 Bottom part 303 Front side part 304 Rear side part 305 Left part 306 Right part 31 Control part 31a Electronic component 310 Mounting jig 311 Mounting part 312 Installation part 50 Closure plate 501 Protrusion part 505 Drain pan 60 Guide rail

Claims (6)

An air conditioner (10) that is arranged in parallel with a rack (2) on which electronic devices are mounted and cools air around the rack (2),
A casing (11) having an air intake port (11c) and an air outlet (11d);
A fan (12) that circulates air from the inlet (11c) to the outlet (11d) in the casing (11);
A heat exchanger (14) that is disposed in an air flow path from the intake port (11c) to the air outlet (11d) and that cools the air flowing through the casing (11) by the fan (12). ,
A control unit (31) is provided in an area in the casing (11) below the fan (12) and the heat exchanger (14), and controls the operation mechanism of the air conditioner (10). A flat electrical component box (30) provided in the
The electrical component box (30) has an upper edge (301) extending in a direction orthogonal to the direction in which the rack (2) and the air conditioner (10) are arranged, and the fan (12) in the casing (11). And a guide rail (60) extending in the orthogonal direction at a position below the heat exchanger (14), and below the bottom (302) of the electrical component box (30) and the bottom of the casing (302 The air conditioner (10) in which the guide rail (60) guides the advancing and retreating operation of the upper edge portion in the orthogonal direction relative to the casing (11) in a state where a gap is provided therebetween. The electrical component box (30) has a shape with an open top,
Between the area in the casing (11) in which the fan (12) and the heat exchanger (14) are disposed, and the area in the casing (11) in which the electrical component box (30) is disposed A closing plate (50) that covers and closes the upper part of the electrical component box (30) is provided across the inner walls of both sides (11j, 11k) of the casing (11),
The air conditioner according to claim 1, wherein the guide rail (60) is provided on both sides of the closing plate (50) extending in the orthogonal direction. Between the area in the casing (11) in which the fan (12) and the heat exchanger (14) are disposed, and the area in the casing (11) in which the electrical component box (30) is disposed A drain pan (505) for receiving condensed water generated in the heat exchanger across both regions is provided,
The air conditioner (10) according to claim 1 or 2, wherein the closing plate (50) is provided integrally with the drain pan (505). The electrical component box (30) includes a bottom portion (302) parallel to the floor surface, and a front side portion provided at an edge position of the bottom portion (302) which is the front side of the casing (11) in the pull-out direction. (303), a back side portion (304) provided at an edge position of the bottom portion (302) which is the back side of the casing (11) in the pull-out direction, the front side portion (303) and the back side A left side part (305) and a right side part (306) connecting the part (304),
In order to provide drive control of each operating mechanism, comprising a wiring (6) connected to the control unit (31) in the electrical component box (30),
The front side portion of the casing (11) in the pull-out direction of the electrical component box (30), the casing (11) disposed at a position below the bottom (302) of the electrical component box (30) On the partial member (11n), the wiring (6) passes from the back side of the casing (11) through the lower part (302) of the electrical component box (30) to the lower surface of the partial member (11n). Is hooked to the back side (304) of the electrical component box (30) from the latched portion, and is pulled into the electrical component box (30) from the back side (304). The air conditioner (10) according to any one of claims 1 to 3, wherein the air conditioner (10) is connected to the controller (31).   The wiring (6) is temporarily latched from the latching portion on the lower surface of the partial member (11n) to either the left side (305) or the right side (306), and the left side ( 305) or the hook portion in the right side portion (306) is drawn to the back side portion (304) of the electrical component box (30) and drawn into the electrical component box (30). The air conditioner (10) as described.   The partial member (11n) is located on the bottom surface (302) at a position on the front surface side of the casing (11) and in a casing (11) position that contacts the lower surface of the bottom portion (302) of the electrical component box (30). 6. The air conditioner according to claim 4, wherein the air conditioner is a support portion (11 n) provided in a posture parallel to the electrical component box and supporting the bottom portion (302) when the electrical component box (30) is pulled out. (Ten).

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