JP2009079852A - Outdoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner comprising a heat exchanger unit capable of stably vertically stacking heat exchangers partially bent into the L-shape or U-shape. <P>SOLUTION: A holding member 300 is disposed between the upper heat exchanger 210 and the lower heat exchanger 220 respectively formed into the U-shape, a side face of the upper heat exchanger 210 is supported by a first supporting plate 320, a side face of the lower heat exchanger 220 is supported by a second supporting plate 330, and bent portions 240 of the heat exchangers 210, 220 are supported by third supporting plates 240, 250. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner having a heat exchanger unit in which at least two heat exchangers are stacked and connected to each other, and more specifically, relative to the heat exchanger due to an impact during transportation or the like. The present invention relates to an outdoor unit of an air conditioner including a heat exchanger unit that prevents a general position from shifting.

  Large air conditioner outdoor units installed in buildings, commercial facilities, etc. use large heat exchanger units in which at least two heat exchangers are stacked and connected in order to increase the efficiency of the refrigeration cycle. ing.

  However, stacking the heat exchangers up and down has the following problems. That is, in the heat exchanger, many fins for heat dissipation are brazed along the refrigerant pipe along which the refrigerant moves, but when the heat exchangers are stacked up and down, the fins of the other heat exchanger are located between the fins. Because it enters, the position shifts or tilts.

  Therefore, as one method of connecting the heat exchangers up and down, for example, as described in Patent Document 1, a guide rail having an H-shaped cross section is provided between the heat exchangers stacked up and down, There is a method of supporting a heat exchanger via a guide rail.

  According to this, the heat exchangers can be easily stacked by engaging the heat exchangers along the groove of the guide rail.

  However, although the guide rail described in Patent Document 1 is strong and sturdy, it is therefore large and heavy. Moreover, since it forms in H shape, welding etc. are also required for an assembly process, and a production cost becomes high.

  Therefore, a small holder as described in Patent Document 2 is also provided on the other side. This holder is made by pressing a single metal plate, and support plates for supporting the upper heat exchanger and the lower heat exchanger are formed alternately, and prevents the heat exchanger from being displaced. Therefore, a locking piece inserted between the fins is provided.

  According to this, the shift | offset | difference of the vertical direction of a heat exchanger and a horizontal direction can be prevented. However, many large heat exchangers are bent into an L shape or a U shape along the inner periphery of the outdoor unit housing in consideration of the limited installation space. There was no means to prevent deviation.

Japanese Utility Model Publication No. 60-50764 (see FIG. 4) Japanese Patent No. 3213337 (see FIG. 1)

  Therefore, in order to solve the above-described problems, the present invention prevents relative displacement of a heat exchanger partially bent such as an L shape or a U shape, and can stably stack air up and down. It is to provide an outdoor unit for a harmony machine.

  In order to achieve the above-described object, the present invention has several features described below. The invention according to claim 1 is a polygonal shape in which an air intake port is provided on a side peripheral surface, a housing having an air outlet and a fan on an upper surface, and at least one portion is bent inside the housing. In the outdoor unit of the air conditioner in which the heat exchanger unit is arranged along the air intake port, the heat exchanger unit is configured by stacking at least two heat exchangers up and down, and The holding member is held via a holding member, and the holding member includes a base plate disposed between the heat exchangers, a first support plate that supports a side surface of any one of the heat exchangers, A second support plate for supporting the side surface of the other heat exchanger, a third support plate for supporting the side surface of the bent portion of the heat exchanger, and an end plate for fixing the refrigerant pipe of the heat exchanger. And a fixed plate.

  According to a second aspect of the present invention, in the first aspect, the base plate is provided with an escape hole for allowing drain water generated by the upper heat exchanger to escape.

  According to the first aspect of the present invention, the heat exchangers bent in an L shape or the like are stacked one above the other, and the side surfaces of the heat exchangers are held between the first and second support plates by the holding members provided therebetween. In addition to supporting the bent portion of the heat exchanger with the third support plate, relative displacement of the heat exchanger can be reliably prevented. Further, by fixing the fixing plate to the end plate for fixing the refrigerant pipe of the heat exchanger, it is possible to more reliably prevent the heat exchanger from shifting.

  According to invention of Claim 2, the dew condensation water produced | generated by the upper heat exchanger, the rain water which entered the inside of a housing | casing, etc. can be escaped below through a relief hole.

  Next, with reference to FIGS. 1-11, the heat exchanger unit and the outdoor unit of an air conditioner which concern on one Embodiment of this invention are demonstrated, referring drawings. FIG. 1 is a partial cross-sectional perspective view of an outdoor unit of an air conditioner equipped with a heat exchanger unit of the present invention. FIGS. 2 (a) to 2 (c) are a front view, a right side view, and a left side of the outdoor unit. FIG. 3 is a cross-sectional view taken along line AA, and FIG. 4 is a perspective view showing the skeleton of the housing.

  5a and 5b are partially enlarged perspective views for explaining the attachment state of the side panel. FIG. 6 is a perspective view of the heat exchanger unit of the outdoor unit, and FIG. 7 is an exploded perspective view of the heat exchanger unit. FIG. 8 is a perspective view of the holding member of the heat exchanger unit, and is a development view before the holding member is press-molded. FIG. 10 is a perspective view showing another aspect of the holding member of the heat exchanger unit, and is a development view before the holding member is press-molded.

  As shown in FIGS. 1 and 4, the outdoor unit 1 of this air conditioner is for an air conditioner installed in a large facility such as a building, and includes a large and vertically long casing 100. The casing 100 includes a rectangular base panel 110 installed on an installation surface such as a rooftop, four columns 120a to 120d erected almost vertically from the outer periphery of the base panel 110, and each column 120a to 120a. Four connection panels 130a to 130d for connecting the upper ends of 120d are provided. These consist of a press-formed steel plate material.

  Referring also to FIG. 3, the base panel 110 has a rectangular bottom plate 111 on which the compressor C (see FIG. 1) and the like are placed, and one of the four corners (notch portion). ) 112 is formed so as to be cut out obliquely.

  On the outer peripheral edge of the bottom plate 111, an upright portion 113 that is bent substantially vertically is provided. Although the leg part 114 placed on the installation surface is provided on the bottom surface of the base panel 110, the standing part 113 and the leg part 114 may be arbitrarily selected according to specifications.

  The first support column 120a is made of a rectangular steel material integrally formed with a grill for taking air into the housing 100, and the lower end thereof is screwed to the corner portion 112 of the base panel 110.

  The second support column 120b is made of a steel material having an L-shaped cross section that is attached along the corner (upper right corner in FIG. 3) of the base panel 110, and is screwed to the upright portion 113 of the base panel 110. The third support column 120c has substantially the same shape as the second support column 120b, and is attached along the corner of the base panel 110 (the upper left corner in FIG. 3).

  The fourth support column 120d is formed of a rectangular plate, and in order to secure a space for removing the electrical component box 160 provided in the housing 100, a predetermined position from the remaining corner of the base panel 110 (lower left corner in FIG. 3). It is attached to the side of the shifted base panel 110.

  The 1st connection panel 130a consists of a rectangular-shaped metal panel, and is screwed by the upper end of each support | pillar 120a, 120b so that it may span between the 1st support | pillar 120a and the 2nd support | pillar 120b. The 2nd connection panel 130b consists of a rectangular-shaped metal panel, and is screwed by the upper end of each support | pillar 120b, 120c so that it may span between the 2nd support | pillar 120b and the 3rd support | pillar 120c.

  Similarly, the third connection panel 130c is a rectangular metal panel, and is screwed to the upper ends of the columns 120c and 120d so as to bridge between the third column 120c and the fourth column 120d. The fourth connection panel 130d is an L-shaped panel that connects two panels in an L shape to connect the first support column 120a and the fourth support column 120d, and is screwed to the upper ends of the support columns 120a and 120d. Yes.

  A part from the front surface (front side of the paper surface in FIG. 2A) to the left side surface (front side of the paper surface in FIG. 2B) of the housing 100 is covered with a decorative panel 140. The decorative panel 140 is divided into two upper and lower stages, and they can be detached independently.

  An electrical component box 160 for controlling the outdoor unit 1 is provided on the back side of the upper decorative panel 140. In FIG. 1, a part of the electrical component box 160 is omitted, but actually, the electrical component box 160 is formed up to the side surface of the housing 100. The electrical component box 160 is slidably attached from the side surface (left side surface in FIG. 3) side of the housing 100 so as to be removable.

  The compressor C of the outdoor unit 1 is provided on the back side of the lower decorative panel 140, and the compressor C and the like can be maintained by removing the decorative panel 140.

  The right side surface (front side of the paper in FIG. 2C), the back surface (back side in FIG. 2A), and the left side surface of the housing 100 are opened as air intake ports for taking air into the housing 100. A grill 150 for protecting the inner heat exchanger unit 200 is attached to the opening.

  A ceiling panel 160 that covers the upper surface of the housing 100 is provided at the top of the housing 100. The ceiling panel 160 is a rectangular panel attached to each of the connection panels 130a to 130d, and has an exhaust hole 161 (air outlet) for exhausting air sucked into the housing 100 through the heat exchanger 200 at the center. ) Is opened.

  The exhaust hole 161 protrudes in a cylindrical shape from the ceiling panel 160, and a forced exhaust fan 170 is provided coaxially with the exhaust hole 161 inside the exhaust hole 161. In this example, one exhaust hole 161 and one fan 170 are provided for the ceiling panel 160, but a plurality of exhaust holes 161 and fans 170 may be provided.

  As shown in FIG. 5a, a side panel 180a is provided between each of the columns 120a to 120d so that the joint between the upper heat exchanger 210 and the lower heat exchanger 220 of the heat exchanger unit 200 is not visible. To 180c are provided.

  Since each side panel 180a-180c is the same shape from which only length differs, it demonstrates taking the side panel 180c as an example below. The side panel 180c is formed by pressing a rectangular metal plate, and has stepped surfaces 181 and 181 for attachment at both ends.

  The stepped surfaces 181 and 181 are provided with screw insertion holes 182 and 182 for screwing, and by screwing to the side sides of the columns 120c and 120d via the screw insertion holes 182 and 182, The side panel 180c is arranged so as to close the joint. The side panels 180a to 180c may be made of resin.

  A part of each side panel 180a to 180c comes into contact with a part of the side surface of the heat exchanger unit 200, and the heat exchanger unit 200 is held between the side panels 180a to 180c. Yes.

  In this example, the side panels 180a to 180c are bridged and fixed to the columns 120c and 120d by screw insertion holes 182 and 182 provided in the left and right step surfaces 181 and 181, but as shown in FIG. 5b. In addition, a screw insertion hole 183 for screwing to support plates 320 and 330 of the holding member 300, which will be described later, may be provided and further firmly fixed with screws.

  A heat exchanger unit 200 is provided along the inner peripheral surface of the casing 100. As shown in FIGS. 6 and 7, the heat exchanger unit 200 is a two-stage heat exchanger unit in which an upper heat exchanger 210 and a lower heat exchanger 220 are stacked and connected in two upper and lower stages.

  In this embodiment, since the upper heat exchanger 210 and the lower heat exchanger 220 have the same configuration, the following description will be given taking the upper heat exchanger 210 as an example. The upper heat exchanger 210 has refrigerant tubes 211 arranged in a multi-stage in a staggered pattern, and a plurality of radiating fins 212 are provided in parallel with each other along the refrigerant tubes 211.

  In this example, the upper heat exchanger 210 includes a first bent portion 230 and a second bent portion 240 obtained by bending one pipe at a substantially right angle, and a third bent portion 250 bent gently at an obtuse angle. And the whole is formed in a substantially U shape.

  Fixed end plates 213 and 214 for fixing each refrigerant pipe 211 are provided at both ends of the upper heat exchanger 210. The fixed end plates 213 and 214 are made of a metal plate having a U-shaped cross section, and are provided with a number of unillustrated extraction holes for extracting the refrigerant tubes 211.

  The refrigerant pipes 211 are connected to each other via a hairpin-like connection pipe 215, whereby a refrigerant passage is formed. In addition, about the connection form of the refrigerant | coolant pipe | tube 211, a 1 pass system, a multiple pass system, etc. may be sufficient and it is an arbitrary matter in this invention.

  In this example, each refrigerant pipe 211 is integrally formed in a U shape by bending one pipe, but a plurality of straight pipes may be connected by welding or the like via joints. The configuration of the refrigerant pipe 211 can be arbitrarily changed according to the specifications.

  Between the upper heat exchanger 210 and the lower heat exchanger 220, there is provided a holding member 300 that positions the heat exchangers 210 and 220 so that the relative positions do not shift in a state where the heat exchangers 210 and 220 are stacked one above the other. Yes.

  As shown in FIG. 8, the holding member 300 is formed by pressing a single metal plate, and includes a base plate 310 that receives the bottom surface of the upper heat exchanger 210 and the upper surface of the lower heat exchanger 220, and upper heat exchange. A first support plate 320 for supporting the side surface of the heat exchanger 210, a second support plate 330 for supporting the side surface of the lower heat exchanger 220, a third support plate 340 for supporting the first bent portion 230 of the heat exchanger, And a fourth support plate 350 that supports the second bent portion 240.

  The base plate 310 is formed in a substantially U shape so as to match the shape of the butted surfaces of the upper and lower heat exchangers 210 and 220, and the drain plate generated in the upper heat exchanger 210 and the housing 100 A large number of escape holes 311 for escaping rainwater that has entered are provided at predetermined intervals.

  First and second fixings for fixing the holding member 300 to the heat exchanger unit 200 at each end A of the base plate 310 (end surfaces along the fixed end plates 213 and 214 of the heat exchangers 210 and 220). Plates 312 and 313 are provided.

  The first fixed plate 312 is integrally drawn from the end A, and is bent upward substantially at a right angle so as to be parallel to the fixed end plates 213 and 214 on the upper heat exchanger 210 side (upper side). It has been. The first fixing plate 312 is provided with screw insertion holes for screwing, and is fixed to the fixed end plates 213 and 214 via the screw insertion holes.

  The second fixed plate 313 is integrally drawn from the end side A, and is bent downward substantially at a right angle so as to be parallel to the fixed end plates 213 and 214 of the lower heat exchanger 220. The second fixing plate 313 is also provided with screw insertion holes for screwing, and is fixed to the fixed end plates 213 and 214 through the screw insertion holes.

  First support plates 320 and second support plates 330 are alternately formed on each side B of the base plate 310 (end surfaces along the side surfaces of the heat exchangers 210 and 220). The first support plate 320 is formed of a tongue piece integrally drawn from the side B of the base plate 310 and is bent upward along the side B approximately at a right angle.

  The second support plate 330 is a tongue piece that is integrally drawn from the side B of the base plate 310, and is bent along the side B downward substantially at a right angle. The second support plates 330 are provided adjacent to the first support plate 330, and are alternately formed.

  The third support plate 340 is formed of a fan-shaped tongue piece integrally drawn from the corner portion of the side B on the outer peripheral side of the base plate 310, and is bent upward along the side B approximately at a right angle. The fourth support plate 350 is formed of a fan-shaped tongue piece integrally drawn from the corner portion of the side B on the outer peripheral side of the base plate 310, and is bent upward along the side B approximately at a right angle.

  In this example, the third support plate 340 and the fourth support plate 350 are bent upward at substantially right angles so as to receive the bent portions 230 and 240 of the upper heat exchanger 210, but the lower heat exchanger 220 is bent. In order to receive the portions 230 and 240, the portions 230 and 240 may be bent downward or separately.

  In this example, the holding member 300 is formed in a U shape according to the shape of each of the heat exchangers 210 and 220. Other shapes may be used.

  That is, as shown in FIG. 10, the holding member 300 may have a structure including two first and second holding member members 300a and 300b. In addition, the same referential mark is attached | subjected to the location considered the same and the same as embodiment mentioned above, and the description is abbreviate | omitted.

  The first holding member member 300a is formed in an L shape so as to hold two sides that are developed to the left and right with the first bent portion 230 of the heat exchanger unit 200 as the center. The 1st-3rd support plates 320-330 are formed similarly.

  The 2nd holding member member 300b is formed in the substantially L shape which hold | maintains the 2 sides expand | deployed right and left centering | focusing on the 2nd bending part 240 of the heat exchanger unit 200, The 1st mentioned above in each side The second support plates 320 and 330 and the fourth support plate 350 are formed.

  According to this, since the holding member 300 is divided into two holding member members 300a and 300b, it is possible to reliably suppress relative displacement between the upper heat exchanger 210 and the lower heat exchanger 220, and to reduce the production cost. Can be reduced at a lower cost, and further weight reduction can be achieved.

  As shown in FIGS. 9 and 11, these holding members 300 can be easily formed by punching one steel plate and press-molding it. That is, first, one steel plate is punched, and the base plate 310 and the support plates 320 to 340 are integrally punched.

  Next, after separating the boundary between the first support plate 320 and the second support plate 330, the first support plate 320 is bent upward (valley fold in FIGS. 9 and 10) by a press machine, and the second support plate 330 is bent. Is folded downward (mountain folds in FIGS. 9 and 10).

  In addition, after the third support plate 330 is folded upward (valley folded in FIGS. 9 and 10), the fixing plates 313 and 314 at both ends are also folded up and down, so that the holding member can be easily formed. .

  In this embodiment, the heat exchanger unit 200 consists of an upper heat exchanger 210 and a lower heat exchanger 220 that are assembled in two upper and lower stages, but in addition to this, the holding member of the present invention is assembled in three stages. 300 may be applied. Further, the holding member 300 of the present invention can be used not only in the vertical assembly but also in the horizontal assembly.

The partial cross section perspective view of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention. (A) Front view, (b) Left side view, and (c) Right side view of the outdoor unit. AA line sectional view of the above-mentioned outdoor unit. The perspective view explaining the frame structure of the said outdoor unit. The partial expansion perspective view explaining the attachment state of a side panel. The partial expansion perspective view explaining the attachment state of a side panel. The perspective view of the heat exchanger unit of the said outdoor unit. The exploded perspective view of a heat exchanger unit. The perspective view of the holding member of the said heat exchanger unit. The expanded view before press-molding a holding member. The perspective view which shows another aspect of the holding member of the said heat exchanger unit. The expanded view before press-molding a holding member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outdoor unit 100 Case 110 Base panel 120a-120d Support | pillar 130a-130d Connection panel 140 Cosmetic panel 150 Grill 160 Ceiling panel 170 Fan 180 Side panel 200 Heat exchanger unit 210 Upper heat exchanger unit 220 Lower heat exchanger unit 230, 240 bent portion 300 holding member 300a, 300b holding member member 310 base plate 320 first support plate 330 second support plate 340, 350 third support plate

Claims (2)

A polygonal heat exchanger unit that includes a housing having an air intake port on a side peripheral surface, an air outlet and a fan on an upper surface, and having at least one bent inside the housing includes the air In the outdoor unit of the air conditioner arranged along the intake port,
In the heat exchanger unit, at least two heat exchangers are stacked one above the other, and these are held via a predetermined holding member, and the holding member is a base disposed between the heat exchangers. A plate, a first support plate that supports a side surface of one of the heat exchangers, a second support plate that supports a side surface of the other heat exchanger, and a side surface of a bent portion of the heat exchanger An outdoor unit for an air conditioner, comprising: a third support plate that supports the heat exchanger; and a fixing plate that is attached to an end plate that fixes the refrigerant pipe of the heat exchanger.   An outdoor unit of an air conditioner, wherein the base plate is provided with an escape hole for allowing drain water generated by the upper heat exchanger to escape.

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