JP2013036703A - Air conditioner outdoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner outdoor unit that prevents displacement of heat exchangers stacked in two stages and which reinforces strength of a casing.SOLUTION: The air conditioner outdoor unit 1 includes an upper heat exchanger 40 and a lower heat exchanger 41 stacked above and below in two stages, a blower fan 30, a motor 31, and a motor mounting base 6 for holding the motor 31. The motor mounting base 6 includes a motor mounting surface 60 and a flange 61. The motor mounting surface 60 has a plurality of openings 63 for ventilation. A tip end of a heat exchanger supporting part 65 projecting to the side of both heat exchangers is bent from an edge part of one of the openings 63 and has a pressing part 65a for pressing an abutting part 44 between the upper heat exchanger and the lower heat exchanger stacked above and below to the back face side thereof.

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to a structure of a motor mount.

There is known a multi-room type air conditioner in which a plurality of indoor units are provided for one outdoor unit and the outdoor unit and the indoor unit are connected by a refrigerant pipe. The inside of the outdoor unit is a blower room in which a machine room equipped with a compressor, an accumulator, etc., and a heat exchanger, a blower fan, etc. are installed by a partition plate attached to a bottom plate that forms part of the casing of the outdoor unit. It is divided into and.
As shown in FIG. 10, the heat exchanger 101 in the blower chamber 100 is placed on the bottom plate 105 in two upper and lower stages, and two blower fans 102 arranged in the upper and lower directions are pivotally supported by the motor 103. The motor mounting base 104 is attached to the motor mounting openings 104a provided at two locations on the top and bottom. The motor mounting base 104 is supported by fixing the upper holding portion 104b to the upper end of the heat exchanger 101 and fixing the lower holding portion 104c to the bottom plate 105 with screws. (See Patent Document 1).

Japanese Patent Laid-Open No. 03-177726 (FIG. 1)

The two-stage heat exchanger described above is supported by the bottom plate by passing a plurality of heat transfer tubes through the fins of the thin aluminum plates arranged in close proximity, and screwing the left and right ends of the heat exchanger to the side plates. Therefore, although it is stable even in two-stage stacking, there is a possibility that a position shift may occur in the stacked heat exchangers due to an unexpected external force applied during transfer or the like.
Also, the motor mounting base that supports the motor becomes longer as the heat exchanger becomes larger, and the vibration and vibration caused by the motor increase. Therefore, it is necessary to reinforce the strength.

  The present invention solves the above-described problems, and in an outdoor unit of an air conditioner in which heat exchangers are stacked in two stages, air that prevents positional displacement of the stacked heat exchangers and reinforces the strength of the housing. It aims at providing the outdoor unit of a harmony machine.

In order to solve the above-described problems, the inside of the housing is divided into a blower chamber and a machine chamber by a partition plate, and the blower chamber is divided into an upper heat exchanger and a lower heat exchanger that are vertically stacked on the back side, and on the front side. In an outdoor unit of an air conditioner including a blower fan, a motor that drives the blower fan, and a motor support that holds the motor,
The motor support includes a motor mounting base for mounting the motor, an upper holding portion for fixing the upper end of the motor mounting base to the upper end of the heat exchanger, and a lower holding portion for fixing the lower end of the motor mounting base to the bottom plate of the housing. Become
The motor mount comprises a motor mounting surface having a motor mounting port and a plurality of ventilation openings, and a flange portion where the periphery of the motor mounting surface is bent toward the heat exchanger,
One edge of the opening is provided with a heat exchanger support that protrudes toward the two heat exchangers. The heat exchanger support has a top heat exchanger that is bent at the top and stacked in two stages. A pressing portion that presses the contact portion of the heat exchanger toward the back side is provided.

  The pressing part is divided vertically, and a part thereof is bent horizontally, and is inserted between the contact parts of the upper heat exchanger and the lower heat exchanger.

  A lower heat exchanger support part protruding toward the lower heat exchanger is provided at the lower edge of the lower opening, and the lower heat exchanger support part is bent upward at its tip to press the lower heat exchanger. A lower pressing part is provided.

  The motor mounting base is made of a steel plate, and is formed by leaving a part of the opening in an X-shaped or Y-shaped bracing.

  The heat exchanger support is provided at the upper edge of the opening corresponding to the Y shape.

The outdoor unit of the air conditioner of the present invention configured as described above includes a heat exchanger support portion on a motor mounting base, and an upper heat exchanger and a lower heat exchanger stacked in two stages on the tip of the heat exchanger support portion. By providing a pressing portion that presses the contact portion of the heat exchanger to the back side, there is an effect of preventing positional deviation between the upper heat exchanger and the lower heat exchanger during transfer.
In particular, by inserting a part of the pressing portion between the contact portions of the upper heat exchanger and the lower heat exchanger, the pressing portion is fixed to the contact portion.
Moreover, by providing the lower press part which presses a lower heat exchanger, it will press a heat exchanger in two places near the center part and bottom face of a heat exchanger, and while preventing the position shift of both heat exchangers The motor mount itself has the effect of being supported by both heat exchangers, and the strength of the housing of the outdoor unit is reinforced.
Further, a part of the opening is formed by leaving the steel plate in the X-shaped or Y-shaped bracing, thereby forming a beam shape, which is more resistant to torsional deformation, the strength is increased, and the heat exchanger support portion is By providing it at the upper edge of the opening corresponding to the Y shape, the strength of supporting the heat exchanger support is increased by the beam shape.

It is a front view of the outdoor unit by this invention. It is a figure which shows the internal structure of the outdoor unit by this invention. It is a figure which shows the structure by the side of the air blower room of the outdoor unit by this invention. It is an exploded view by the side of a fan room of an outdoor unit by the present invention. It is a figure before bending a motor mounting base. It is a front view of a motor mounting base. It is the perspective view which looked at the motor mounting base from the back side. It is AA fragmentary sectional drawing of FIG. It is a figure of 2nd Example, (A) is the principal part perspective view which looked at the motor mounting base from the back side, (B) is principal part sectional drawing. It is a principal part perspective view of the outdoor unit of the air conditioner by a prior art example.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated in detail as an Example based on an accompanying drawing.

The outdoor unit of the air conditioner according to the present invention is installed outdoors, and is connected to at least one indoor unit installed in the air-conditioned room via a refrigerant pipe to constitute a refrigeration cycle.
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the outdoor unit 1 of the air conditioner according to the present embodiment has a substantially rectangular parallelepiped housing. The outer shell of the housing is mainly formed by processing a steel plate, covers the front panel 10 that covers one of the front surfaces, the blower outlet 1a that is circularly opened at two upper and lower portions of the front panel 10, and the blower outlet 1a. A fan guard 11, a rear panel 12 serving also as one side panel, a removable service panel 13 covering the other one of the front side, a left side panel 14 having a suction port 1b composed of a plurality of four-sided holes, The bottom plate 15, the top plate 16, and the piping cover 17 are configured.
The bottom plate 15 is assembled with a part of the front panel 10 and the back panel 12 and the lower end of the pipe cover 17 by screwing with a flange 15a around the bottom plate 15, and the top plate 16 is assembled with the front panel 10 and the back panel 12. The upper end of the cover is closed and assembled by screwing.

  In the following description, in the case of the outdoor unit 1, the front panel 10 in FIG. 1 is the front surface, the opposite surface is the back surface, and the service panel 13 is disposed when the front panel 10 is viewed from the front. The explanation will proceed with the right side as the opposite side and the left side as the opposite side.

  The inside of the casing of the outdoor unit 1 is partitioned into a machine room 2 and a blower room 3 by a partition plate 18. The machine room 2 accommodates an accumulator 20, a compressor, a four-way valve, and a pipe 21 (not shown). An electrical component box 23 is disposed in the upper part of the machine room 2 and is fixed to the partition plate 18.

  As shown in FIGS. 1 to 3, the blower chamber 3 includes a heat exchanger 4 on the back side and two blower fans 30 pivotally supported by a motor, which will be described later, on the front side facing the air outlet 1 a. Is provided.

The heat exchanger 4 is exchanged with the upper heat exchanger 40 and the lower heat exchanger 40, each of which is composed of thin fins 4a made of aluminum and arranged in parallel, and heat transfer tubes 4b arranged in a meandering manner so as to be orthogonal to the fins 4a. The unit 41 is placed on the bottom plate 15 in two upper and lower stages, is substantially L-shaped when viewed from above, and is arranged along the back surface from the left side surface of the outdoor unit 1.
Left side plates 40 a and 41 a are respectively attached to the left end portions of the upper heat exchanger 40 and the lower heat exchanger 41, and the left side plates 40 a and 41 a are fixed to the left side panel 14 by a connecting plate 42.
Further, right plates 40 b and 41 b are attached to the right ends of the upper heat exchanger 40 and the lower heat exchanger 41, respectively, and the right plates 40 b and 41 b are integrated by a connecting plate 43.
Further, the lower ends of the left side plate 41 a and the right side plate 41 b of the lower heat exchanger 41 are fixed to the bottom plate 15. Thereby, both ends of the upper heat exchanger 40 and the lower heat exchanger 41 are fixed to the housing of the outdoor unit 1.

  2, the heat exchanger 4 is exposed between the side end of the back panel 12 and the side end of the left side panel 14, and the blower fan 30 causes the blower chamber to be located on the back side of the outdoor unit 1. 3 is a rear suction port 1c for taking outside air, and a protective member 19 is provided in the rear suction port 1c.

  As shown in FIG. 4, the two blower fans 30 are each pivotally supported by a motor 31, and the motor 31 is attached to the motor support 5 fixed to the housing of the outdoor unit 1, so that the blowers are arranged vertically. Arranged in the chamber 3.

  With the above-described configuration, the outdoor unit 1 of the air conditioner is, for example, a fin that is in pressure contact with the heat of the high-temperature and high-pressure refrigerant that circulates inside the heat transfer tube 4b of the heat exchanger 4 during cooling operation. While transferring heat to 4a, the heat-transferred fin 3a is heat-exchanged by being cooled by the air sucked from the rear suction port 1c by the blower fan 30.

As shown in FIG. 4, the motor support 5 includes a motor mount 6 that fixes the motor 31 and an upper support that is locked to the upper end of the upper heat exchanger 40 by locking the upper end of the motor mount 6. It consists of a tool 7 and a lower support tool 8 that locks the lower end of the motor mounting plate 6 and is fixed on the bottom plate 15.
Here, the motor support 5 will be described as a separate component structure of the motor mount 6, the upper support 7 and the lower support 8. However, the motor mount 5 is an integral unit having an upper support and a lower support. The same effect can be obtained with the above-described configuration or a configuration in which either the upper support portion or the lower support portion is integrated with the motor mount.

The upper support 7 is composed of a horizontal upper surface portion 70 and a flange portion 71 suspended from the four sides of the upper surface portion 70, and a locking claw 72 cut out from a part of the upper surface portion 70 and bent downward is provided. The motor mounting base 6 is fixed to the motor mounting base 6 by engaging with a locking hole 61a of the flange part 61 of the motor mounting base 6 to be described later and then screwing the flange part 71 and the side surface of the flange part 61 with screws.
A part of the side surface portion of the flange portion 71 is notched and becomes a notched portion 73 that is inserted through the upper end of the upper heat exchanger 40 and is latched to the upper heat exchanger 40.
The front portion 71a of the flange portion 71 is screwed to the upper end of the front panel 10, the front panel 10 is screwed to the top plate 16, and the rear surface portion 71b of the flange portion 71 is screwed to the top plate 16. The upper part of the motor support 5 and the upper heat exchanger 40 are held by the top plate 16, so that positional displacement does not occur.

  The lower support 8 includes a horizontal bottom surface 80, a flange portion 81 raised from both side surfaces of the bottom surface 80, and a locking hole 82 provided in a bent portion of the flange portion 81 and the bottom surface 80. The locking claw 61b protruding from the lower end of the flange portion 61 of the motor mount, which will be described later, is locked in the stop hole 82, and then the side of the flange portion 81 and the flange portion 61 is screwed to fix the motor mount 6 The motor support 5 is fixed to the housing of the outdoor unit 1 by screwing the bottom surface 81 and the bottom plate 15 with screws.

  As shown in FIG. 5, the motor mount 6 is formed by cutting and bending from a single steel plate. As shown in FIG. 4, the processed motor mounting base 6 has substantially the same height as the heat exchanger 4, and includes a motor mounting surface 60 and a flange portion 61 where the periphery of the steel plate is bent to the back side. A locking hole 61 a for locking the locking claw 72 of the upper support 7 described above is provided on the upper surface side of the flange portion 61, and the locking holes of the lower support 8 described above are provided at the lower ends of both side surfaces of the flange portion 61. A locking claw 61b for locking to 82 is provided in a protruding shape.

As shown in FIGS. 4 to 6, the motor mounting surface 60 is provided with two motor mounting ports 62, which are formed in the same shape as the motor 31 in the vertical direction.
In addition, the motor 31 fits the bottom part of the opposite side of the shaft 31 a into the motor attachment port 62, and screws the attachment parts 31 b provided at a plurality of positions on the side surface of the motor 31 and the screw holes 62 a around the motor attachment hole 62. It is fixed by that.
Thereafter, the blower fan 30 is pivotally supported on the shaft 31 a of the fixed motor 31, so that the blower fan 30 is installed in the outdoor unit 1 and can be rotated by the motor 31.

Since the motor mount 6 is arranged between the heat exchanger 4 and the blower fan 30 and becomes resistance to ventilation, it is better to reduce the area occupied by the steel plate of the motor mount surface 60. On the other hand, when the area occupied by the steel plate is reduced, the strength for supporting the blower fan 30 and the motor 31 is impaired, and in particular, the twisting direction due to vibration during rotation of the blower fan 30 may be weakened.
Therefore, as shown in FIGS. 5 and 6, the motor mounting surface 60 includes a plurality of openings 63 for ventilation in addition to the motor mounting port 62. The opening 63 is formed by cutting out from the steel sheet, leaving a portion to be the opening flange 631 provided around the opening, and bending the portion indicated by the one-dot chain line in FIG. 5 to the back side. The opening 63 is formed by leaving a steel plate in the X-shaped bracing between the upper rectangular opening 63a formed by a rectangular hole on the upper side of the motor mounting base 6 and the motor mounting ports 62 and 62. A triangular opening 63b formed by a triangular hole, and a base-shaped opening 63c corresponding to a Y-shape formed by leaving a steel plate in a Y-shape in a rectangular hole below the triangular opening 63b; There is a trapezoidal opening 63 d that is under the Y-shape, and a lower rectangular opening 63 e on the lower side of the motor mounting base 6.
A plurality of openings 63 reduce the surface that becomes the resistance to ventilation, and the steel plate is left behind to make a beam structure, which is resistant to torsional deformation and strength.

As shown in FIGS. 4 to 8, a heat exchanger support 64 is provided at the upper end edge of the base-shaped opening 63c, and a lower heat exchanger support 65 is provided at the lower end edge of the lower rectangular opening 63e. Is provided.
The heat exchanger support 64 is cut out integrally using a portion that becomes a hole in the base-shaped opening 63c, protrudes from the upper end of the base-shaped opening 63c to the back side, the tip is bent downward, and the bent portion Becomes the pressing portion 64 a of the heat exchanger 4. The pressing portion 64a is positioned at the contact portion 44 between the upper heat exchanger 40 and the lower heat exchanger 41, and the upper heat exchanger 40 and the lower heat exchanger 41 are not displaced so as not to be displaced during the transfer. It plays the role which presses both the heat exchanger 40 and the lower heat exchanger 41 to the back side.

  The lower heat exchanger support 65 is cut out integrally using a portion that becomes a hole of the lower square opening 63e, protrudes from the lower end of the lower square opening 63e to the back side, and the tip is bent upward and bent. The portion becomes the pressing portion 65 a of the lower heat exchanger 41. The pressing part 65a presses the lower heat exchanger 41 to the back side.

  In addition, since the heat exchangers are stacked in two stages, the motor mounting base 6 itself has a shape that is long in the vertical direction. Further, for the motor mounting base 6 that supports the two blower fans 30 and the motor 31, the bottom of the motor mounting base 6 The upper heat exchanger support part 64 and the lower heat exchanger support part 65 arranged at two locations of the section press the upper heat exchanger 40 and the lower heat exchanger 41 to prevent positional displacement and 6 itself also has the effect of being supported by the heat exchanger 4, can suppress vibration even when the motor rotates, and the strength of the housing of the outdoor unit 1 is also reinforced.

FIG. 9 shows a second embodiment. In addition, the same code | symbol is provided to the part similar to Example 1, and a different part from Example 1 is demonstrated.
The pressing part 641 of the upper heat exchanger support part 64 is vertically divided into three equal parts, and both end parts are located at the contact part 44 between the upper heat exchanger 40 and the lower heat exchanger 41 as in the first embodiment. The central part is bent until the tip becomes horizontal. The portion that has been bent and leveled becomes the insertion portion 641 a and is inserted between the contact portions 44 of the upper heat exchanger 40 and the lower heat exchanger 41.
By inserting and fixing the insertion portion 641a between the upper heat exchanger 40 and the lower heat exchanger 41, the pressing portion 641 can firmly press the upper heat exchanger 40 and the lower heat exchanger 41 to the back side. Moreover, the position shift of the upper heat exchanger 40 and the lower heat exchanger 41 more than Example 1 can be prevented, and the intensity | strength of the housing of the outdoor unit 1 is further reinforced.
The pressing portion 641 may be vertically divided into two, and in that case, one of the divided portions becomes an insertion portion 641a and is inserted between the contact portions 44 of the upper heat exchanger 40 and the lower heat exchanger 41. It is.

As described above, according to the configuration of the present invention, the external force applied at the time of transfer is provided by including the pressing portion that presses the contact portion of the upper heat exchanger and the lower heat exchanger stacked in two stages on the back side. There is an effect of preventing the positional deviation between the upper heat exchanger and the lower heat exchanger due to the heat, and by providing a lower pressing portion that presses the lower heat exchanger to the back side, 2 near the center and bottom of the heat exchanger. The heat exchanger will be pressed at the location, preventing the displacement of both heat exchangers, the motor mounting itself is also supported by both heat exchangers, and the strength of the outdoor unit housing is also reinforced. The
Further, a part of the opening is formed by leaving the steel plate in the X-shaped or Y-shaped bracing, thereby forming a beam shape, which is resistant to torsional deformation and increases in strength.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 15 Bottom plate 16 Top plate 30 Blower fan 31 Motor 4 Heat exchanger 40 Upper heat exchanger 41 Lower heat exchanger 5 Motor support body 6 Motor mounting base 60 Motor mounting surface 61 Flange part 63 Opening part 64 Upper heat exchanger Holding part 64a Pressing part 65 Lower heat exchanger holding part 65a Pressing part 7 Upper holder 8 Lower holder

Claims (5)

The inside of the housing is divided into a blower room and a machine room by a partition plate, and the blower room is driven by an upper heat exchanger and a lower heat exchanger that are stacked in two layers on the back side, a blower fan on the front side, and the blower fan. In an outdoor unit of an air conditioner provided with a motor that performs and a motor support that holds the motor,
The motor support includes a motor mounting base for mounting the motor, an upper holding portion for fixing the upper end of the motor mounting base to the upper end of the heat exchanger, and a lower holding portion for fixing the lower end of the motor mounting base to the bottom plate of the housing. Become
The motor mount comprises a motor mounting surface having a motor mounting port and a plurality of ventilation openings, and a flange portion where the periphery of the motor mounting surface is bent toward the heat exchanger,
One edge of the opening is provided with a heat exchanger support that protrudes toward the two heat exchangers. The heat exchanger support has a top heat exchanger that is bent at the top and stacked in two stages. An outdoor unit for an air conditioner, comprising a pressing portion that presses the contact portion of the heat exchanger toward the back side.   The said pressing part is divided | segmented vertically, a part is bend | folded horizontally, and it is inserted between the contact parts of the said upper heat exchanger and the said lower heat exchanger, It is characterized by the above-mentioned. Air conditioner outdoor unit.   A lower heat exchanger support part protruding toward the lower heat exchanger is provided at the lower edge of the lower opening, and the lower heat exchanger support part is bent upward at its tip to press the lower heat exchanger. The outdoor unit for an air conditioner according to claim 1, further comprising a lower pressing portion.   The outdoor unit for an air conditioner according to any one of claims 1 to 3, wherein the motor mounting base is made of a steel plate and is formed by leaving a part of the opening portion in an X-shaped or Y-shaped bracing.   The outdoor unit of an air conditioner according to claim 4, wherein the heat exchanger support part is provided at an upper end edge of an opening corresponding to a Y shape.

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