JP6041136B2 - Flat fan guard and outdoor unit - Google Patents

Description

  The present invention relates to a flat fan guard disposed in an exterior body and an outdoor unit using the same.

  Conventionally, in an outdoor unit of an air conditioner, a flat fan guard arranged on the top surface of an exterior body is known (see, for example, Patent Document 1).

Japanese Patent No. 3110216

However, since the exterior body and the flat fan guard are in contact with each other in the conventional configuration, when vibration is transmitted to the exterior body during operation of the outdoor unit, the exterior body and the flat fan guard repeatedly collide, There was a risk that a so-called chatter noise would occur.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a flat fan guard and an outdoor unit capable of suppressing chatter noise.

  In order to achieve the above object, the present invention is a flat fan guard disposed on a sheet metal exterior body end surface, wherein the outer periphery of the fan guard is formed smaller than the inner periphery of the exterior body end surface, A plurality of fine wire rods are arranged in a row, a thick wire rod is arranged between the thin wire rods, and an attachment portion for attaching the fan guard to the end face of the exterior body is provided at both ends of any of the thick wire rods. Features.

  In the above configuration, a plurality of the thick wire rods may be arranged next to each other, and the end portions of the respective thick wire rods may be closed to form the attachment portion.

  The said structure WHEREIN: The positioning part for preventing reverse attachment of a fan guard may be provided in the edge part of one of the thin wire materials, and the said attachment part may be provided in the both ends of the said thick wire material adjacent to the said thin wire material.

  In the above configuration, a plurality of the thick wires may be arranged on the outer peripheral edge of the fan guard.

  The said structure WHEREIN: The said attachment part may be formed by bending the edge part of the said thick wire.

  The present invention also relates to an outdoor unit in which a flat fan guard is disposed on an end face of a sheet metal exterior body, and a propeller fan for an outdoor heat exchanger is disposed in the back of the flat fan guard. The outer peripheral edge is formed smaller than the inner peripheral edge of the exterior body end face, a plurality of fine wire members are arranged in columns and rows, a thick wire member is arranged between the thin wire members, and at both ends of either thick wire member An attachment part for attaching the fan guard to the end face of the exterior body is provided.

  According to the present invention, since the outer periphery of the fan guard is formed smaller than the inner periphery of the end face of the exterior body, contact between the fan guard and the exterior body can be suppressed. In addition, because a plurality of fine wire rods are arranged in columns and rows, a thick wire rod is arranged between the thin wire rods, and an attachment portion for attaching the fan guard to the end face of the exterior body is provided at both ends of either of the thick wire rods Since the fan guard can be firmly fixed to the exterior body by the thick wire, the collision between the exterior body and the fan guard can be prevented. As a result, chatter noise can be suppressed.

It is a perspective view which shows the outdoor unit which concerns on embodiment of this invention. It is a figure which shows the internal structure of an outdoor unit, and is II-II sectional drawing of FIG. It is a perspective view which shows the upper part of the outdoor unit of the state which removed the flat fan guard. It is a disassembled perspective view which shows the upper part of the outdoor unit of FIG. It is a perspective view which shows a front side top panel part. It is a perspective view which shows a rear side top panel part. It is a top view which shows the outdoor unit of the state which fixed the flat fan guard. It is a front view which shows a flat fan guard. It is a perspective view which expands and shows the attachment part of a flat fan guard. It is a disassembled perspective view which expands and shows the positioning part of a flat fan guard. It is a perspective view which expands and shows the positioning part of a flat fan guard.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The air conditioner is composed of an outdoor unit 10 and an indoor unit (not shown), and performs a cooling operation and a heating operation by flowing a refrigerant through a refrigerant circuit connected by a refrigerant pipe. The outdoor unit 10 is installed outside, exchanges heat with outdoor air, condenses the refrigerant during the cooling operation and releases heat to the outside air, and evaporates the refrigerant during the heating operation and takes in heat from the outside air. In addition, the directions such as up and down and left and right described below indicate directions when the outdoor unit 10 is viewed from the front side in a state where the outdoor unit 10 is installed.

FIG. 1 is a perspective view showing the outdoor unit 10, and FIG. 2 is a view showing an internal configuration of the outdoor unit 10, and is a cross-sectional view taken along the line II-II in FIG.
As shown in FIG. 1, the outdoor unit 10 includes a unit case (housing, exterior body) 11 having a substantially rectangular parallelepiped box shape. The unit case 11 is mounted on a pair of leg members 13 and 13 extending in the front-rear direction. A bottom plate 12 that is passed and fixed, columns 14 that extend vertically from four corners of the bottom plate 12, and a front panel 15 are configured.
As shown in FIG. 2, a heat exchanger 21 is formed on the bottom plate 12 by being bent into a substantially U shape when viewed from above. Is formed. An air blower (axial flow type air blower) 22 is disposed above the heat exchanger 21. The heat exchanger 21 constitutes a side surface portion of the unit case 11 and is arranged from the left side surface of the unit case 11 along the back surface and the right side surface.

The blower 22 includes a fan motor 23 disposed above the heat exchanger 21 and a propeller fan (impeller) 24 attached to the shaft of the fan motor 23. Between adjacent struts 14 and 14, connecting members 16 and 16 (see FIG. 4) for connecting the struts 14 and 14 at positions corresponding to the upper ends of the heat exchanger 21 are provided. It is fixed to support frames 17, 17 that are stretched between the members 16, 16.
Around the propeller fan 24, a bell mouth 25 is provided for guiding the air on the suction side of the propeller fan 24 to the blowing side, and above the blowing opening 25A of the bell mouth 25, as shown in FIG. 24 is covered with a flat fan guard 40 that prevents contact of a human body or the like with 24. A decorative panel 27 is provided around the bell mouth 25.

  When the propeller fan 24 is rotationally driven by the fan motor 23, as shown by the arrow X in the drawing around the outdoor unit 10, more specifically, the left side, the back side, and the right side excluding the front surface of the unit case 11. Outside air is sucked into the unit case 11 from the surface side, and is discharged outside through the blowout opening 25 </ b> A of the bell mouth 25 provided on the upper surface portion of the unit case 11. That is, the outdoor unit 10 is configured as a top blowing type that blows out air after heat exchange from the top surface.

In the unit case 11, a compressor, an accumulator, an oil separator, and a receiver tank, which are part of the refrigerant circuit, are provided on the bottom plate 12, but a valve body such as a four-way valve or an expansion valve is provided. The refrigerant circuit components are accommodated by pipe connection. One end side of the piping of these refrigerant circuit components is connected to the indoor unit via the heat exchanger 21, and the other end side of the piping of the refrigerant circuit components is connected to the indoor unit. A circulating refrigerant circuit is configured.
Further, in this configuration, the compressor is disposed on the front side of the unit case 11, and the electrical box 50 in which various electrical units such as a control board for controlling the air conditioner are disposed in the upper space of the compressor. The For this reason, by removing the front panel 15, the operator can easily perform maintenance work on the components in the unit case 11 from the front side. Reference numeral 29 is a cover plate that is provided above, behind, and on the left and right sides of the compressor so as to prevent raindrops from being directly applied to the compressor.

Next, the structure of the upper part of the outdoor unit 10 will be described.
FIG. 3 is a perspective view showing the upper part of the outdoor unit 10 with the flat fan guard 40 removed. FIG. 4 is an exploded perspective view showing the upper part of the outdoor unit 10 of FIG. FIG. 5 is a perspective view showing the front top panel portion 33A. FIG. 6 is a perspective view showing the rear top panel portion 33B. FIG. 7 is a plan view showing the outdoor unit 10 in a state where the flat fan guard 40 is fixed.
As shown in FIGS. 3 and 4, the rear and left and right sides of the bell mouth 25 are covered with a back panel body 31 and side panel bodies (side plates) 32 and 32, respectively. The bell mouth 25 is formed to have substantially the same size as the short length of the unit case 11 (the width in the left-right direction in the present embodiment), and the straight portion 25B along the side panel bodies 32, 32 along the outlet opening 25A. , 25B. Each of the panel bodies 31 and 32 includes upper end surfaces (exterior body end surfaces) 31A and 32A formed by bending the upper part inward. The back panel body 31 and the side panel bodies 32, 32 are fixed to the support column 14 at the side portions and to the connecting members 16, 16 at the lower ends.
A top panel body (end plate) 33 is provided on the back panel body 31 and the side panel bodies 32 and 32. These panel bodies 31-33 are made of sheet metal and constitute a unit case (exterior body) 11.

  The top panel 33 is formed with a substantially circular opening (inner peripheral portion) 34 that exposes the blowout opening 25 </ b> A of the bell mouth 25. The top panel 33 includes a front top panel 33A and a rear top panel 33B, and is configured in a half pair. In the present embodiment, the front top panel portion 33A and the rear top panel portion 33B are provided with a space between the straight portions 25B and 25B of the bell mouth 25.

As shown in FIG. 5, the front top panel 33A includes a top member 33A1 positioned above the bell mouth 25 (FIG. 4), a standing surface 33A2 standing from the top member 33A1, and a standing surface. An upper end surface (exterior body end surface) 33A3 extending from 33A2 to the front front panel 15 (FIG. 1) is integrally provided.
As shown in FIG. 6, the rear top panel 33B includes a top member 33B1 located above the bell mouth 25, a standing surface 33B2 standing from the top member 33B1, and a rear from the standing surface 33B2. An upper end surface (exterior body end surface) 33B3 extending to the rear panel body 31 is integrally provided.

  As shown in FIGS. 4 to 6, extending pieces 33 </ b> A <b> 4 and 33 </ b> B <b> 4 extending downward are provided on both sides of the top surface members 33 </ b> A <b> 1 and 33 </ b> B <b> 1. The extending pieces 33A4 and 33B4 are formed integrally with the top surface members 33A1 and 33B1 by bending a sheet metal constituting the top panel portions 33A and 33B. In the front top panel portion 33A, the upper end surface 33A3 is fixed to the front panel 15 (FIG. 3) and the column 14, and the extending piece 33A4 is fixed to the side panels 32 and 32. In the rear top panel portion 33B, the upper end surface 33B3 is fixed to the upper end surface 31A of the rear panel body 31, and the extending pieces 33B4 are fixed to the side panels 32 and 32.

As shown in FIG. 7, the upper end surfaces 31A, 32A, 33A3, 33B3 of the panel body 31-33 constitute a substantially rectangular inner peripheral edge 30, and are flat on these upper end surfaces 31A, 32A, 33A3, 33B3. The fan guard 40 is fixed. Thus, since the flat fan guard 40 is fixed to the upper end surfaces 31A, 32A, 33A3, 33B3 of the panel body 31-33 instead of the top surface members 33A1, 33B1 of the top panel body 33, the shape of the flat fan guard 40 is changed. Therefore, it is not necessary to match the circular opening 34, and the design freedom of the flat fan guard 40 is improved.
5 and 6, reference numeral 35 denotes a cut-and-raised wall that rises upward along the opening 34, and reference numerals 36 and 37 denote drainage points for draining the water that has entered the top surface materials 33A1 and 33B1. . The drainage point 37 is provided in a notch 38 that avoids the support column 14.

Next, the flat fan guard 40 will be described.
FIG. 8 is a front view showing the flat fan guard 40. FIG. 9 is an enlarged perspective view showing the attachment portion 43 of the flat fan guard 40. FIG. 10 is an exploded perspective view showing the positioning portion 45 of the flat fan guard 40 in an enlarged manner. FIG. 11 is an enlarged perspective view showing the positioning portion 45 of the flat fan guard 40.

  As shown in FIG. 7, the flat fan guard 40 is a fan guard formed in a flat shape and a substantially rectangular shape, and the outer peripheral edge 40A is formed smaller than the inner peripheral edge 30 of the panel body 31-33. . Thereby, since the gap δ is formed between the flat fan guard 40 and the panel body 31-33, the contact between the flat fan guard 40 and the panel body 31-33 can be suppressed. The flat fan guard 40 is configured by arranging a plurality of fine wire rods 41 in a vertical row and a horizontal row, and arranging a thick wire rod 42 between the thin wire rods 41. In addition, in this embodiment, although the space | interval of the wire 41 and 42 is made into the equal space | interval, it is not limited to this. Further, the row wires 41 and 42 are mounted on the row wires 41 and 42, but the present invention is not limited to this. For example, the row wires 41 and 42 are placed on the row wires 41 and 42. It may be attached or the top and bottom of the columns and rows may be alternately changed.

A plurality (two in this embodiment) of thick wires 42 are arranged in the vicinity (outer peripheral edge) of the outer peripheral edge 40A of the flat fan guard 40. More specifically, the outer peripheral edge 40A on the four sides of the flat fan guard 40 is constituted by the thick wire 42, and the wire adjacent to the outer peripheral edge 40A is constituted by the thick wire 42. Thereby, the rigidity of the outer peripheral edge where the rigidity is relatively low can be increased.
Further, the thick wire 42 is provided not only on the outer peripheral edge portion but also on the entire flat fan guard 40 so as to be spaced apart from each other. Thereby, the intensity | strength of the flat fan guard 40 whole can be improved. In the present embodiment, at most, the two thin wire members 41 are provided at intervals between the thick wire members 42.

  The flat fan guard 40 is fixed to the upper end surfaces 31A, 32A, 33A3, and 33B3 of the panel body 31-33 by screws 49 at a plurality of positions (six positions in the present embodiment). Attachment portions 43 and 44 for attaching the flat fan guard 40 to 31A, 32A, 33A3 and 33B3 of the panel body 31-33 are provided at both end portions 42A of any of the thick wire members 42 as shown in FIG. Yes. As described above, the flat fan guard 40 can be firmly fixed to the panel body 31-33 by the thick wire material 42 by providing the attachment portions 43, 44 at both end portions 42A of the thick wire material 42. Collision with the fan guard 40 can be prevented.

  On the short side of the flat fan guard 40, a plurality of thick wire rods 42 extending in the long side direction (two in this embodiment) are arranged next to each other, and the end portions 42A of the respective thick wire rods 42 are closed to each other and attached. 43 is formed. The attachment portion 43 is formed at both end portions 42A of a thick wire 42 extending in the long side direction. As shown in FIG. 9, the attachment portion 43 is provided with a bent portion 43A by bending parallel thick wire members 42 in the vicinity of the outer peripheral edge 40A so as to be close to each other, and a size with which the seat surface of the screw 49 abuts ( In this embodiment, it is narrowed to the size of the washer 49A. Thus, the strength of the attachment portion 43 can be increased by providing the bent portion 43A in the vicinity of the outer peripheral edge 40A. In addition, since a plurality of thick wire members 42 are arranged in parallel, the strength of the entire flat fan guard 40 can be improved. For example, when the flat fan guard 40 is covered with snow, a load is applied to the flat fan guard 40 from above. However, deformation of the flat fan guard 40 can be prevented.

  In the long side of the flat fan guard 40, as shown in FIGS. 10 and 11, the end 42A of the thick wire member 42 extending in the short side direction is sized so that the seating surface of the screw 49 abuts (in this embodiment, The attachment portion 44 is formed so as to be bent to the size of the washer 49A. Thus, by bending the end portion 42 </ b> A of the thick wire 42 to form the attachment portion 44, the attachment portion 44 can be easily provided, and the rigidity of the thick wire 42 can be increased by the attachment portion 44. In addition, in this embodiment, although the attaching part 43 bend | folds the edge part 42A of the thick wire 42 in substantially circle shape, a bending shape is not limited to this.

The thin wire member 41 extending in the short side direction is provided with a positioning portion 45 for preventing the flat fan guard 40 from being reversely attached to the end portion 41A. The positioning portion 45 is formed by bending an end portion 41A of the thin wire member 41 toward the panel body 32, and is inserted into and engaged with an engagement hole 30B formed in the panel body 32. Thus, the positioning part 45 can be easily formed by providing the positioning part 45 on the thin wire 41. In this embodiment, the positioning portion 45 is formed on the long side of the flat fan guard 40 formed on the thin wire 41 extending in the short side direction, but is formed flat on the thin wire 41 extending in the long side direction. You may provide in the short side of the fan guard 40. FIG.
The positioning portion 45 is formed on the fine wire 41 adjacent to the thick wire 42 having the attachment portions 43 formed at both end portions 42A. Thereby, since the flat fan guard 40 can be firmly fixed in the vicinity of the thin wire member 41 provided with the positioning portion 45, chatter noise of the positioning portion 45 can be prevented.

  As described above, according to the present embodiment, the outer peripheral edge 40A of the flat fan guard 40 is formed smaller than the inner peripheral edge 30 of the upper end surfaces 31A, 32A, 33A3, and 33B3 of the panel body 31-33. The contact between 40 and the panel body 31-33 can be suppressed. Further, a plurality of fine wire members 41 are arranged in columns and rows, a thick wire material 42 is arranged between the fine wire materials 41, and the flat fan guard 40 is attached to both end portions 42A of any of the thick wire materials 42 to the panel bodies 31-33. Since the flat fan guard 40 can be firmly fixed to the panel body 31-33 by the thick wire material 42, since the mounting portions 43, 44 for mounting on the upper end surfaces 31A, 32A, 33A3, 33B3 of the panel body 31-33 are provided. Collision with the flat fan guard 40 can be prevented. As a result, chatter noise can be suppressed.

  Further, according to the present embodiment, a plurality of thick wire rods 42 are arranged adjacent to each other, and the attachment portions 43 are formed by closing the end portions 42A of the respective thick wire rods 42. With this configuration, since a plurality of thick wire members 42 are arranged in parallel, the strength of the entire flat fan guard 40 can be improved.

Moreover, according to this embodiment, since the positioning part 45 for preventing reverse attachment of the flat fan guard 40 was provided in the edge part 41A of any thin wire | line material 41, the positioning part 45 can be formed easily.
Moreover, since the attachment part 43 was provided in the both ends 42A of the thick wire 42 adjacent to the fine wire 41 which provided the positioning part 45, the flat fan guard 40 can be firmly fixed in the vicinity of the thin wire 41 provided with the positioning part 45. Therefore, chatter noise of the positioning portion 45 can be prevented.

  In addition, according to the present embodiment, since a plurality of the thick wire members 42 are arranged in the vicinity (outer peripheral edge) of the outer peripheral edge 40A of the flat fan guard 40, the rigidity of the outer peripheral edge where the rigidity is relatively low can be increased. it can.

  Further, according to the present embodiment, since the attachment portion 44 is formed by bending the end portion 42A of the thick wire 42, the attachment portion 44 can be easily provided and the rigidity of the thick wire 42 can be increased. it can.

However, the above embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention.
For example, in the above embodiment, the flat fan guard 40 is formed in a substantially rectangular shape, but the shape of the flat fan guard 40 is not limited to this.

10 Outdoor unit 11 Unit case (housing, exterior body)
21 Outdoor heat exchanger 24 Propeller fan 30 Inner peripheral edge 31-33 Panel body (exterior body)
31A, 32A, 33A3, 33B3 Upper end surface (exterior body end surface)
40 flat fan guard 40A outer peripheral edge 41 fine wire material 41A end portion 42 thick wire material 42A end portion 43, 44 mounting portion 45 positioning portion

Claims (6)

A flat fan guard disposed on the end face of the outer body made of sheet metal,
The outer periphery of the fan guard is formed to be smaller than the inner periphery of the end surface of the exterior body, a plurality of thin wire members are arranged in columns and rows, thick wire members are arranged between the thin wire members, and both ends of any of the thick wire members A flat fan guard comprising a mounting portion for mounting the fan guard on the end face of the exterior body.   The flat fan guard according to claim 1, wherein a plurality of the thick wire rods are arranged next to each other, and ends of the thick wire rods are closed to form the attachment portion.   A positioning portion for preventing reverse mounting of the fan guard is provided at an end portion of any one of the thin wire members, and the attachment portions are provided at both end portions of the thick wire member adjacent to the thin wire member. The flat fan guard according to 1 or 2.   The flat fan guard according to any one of claims 1 to 3, wherein a plurality of the thick wires are arranged on an outer peripheral edge of the fan guard.   The flat fan guard according to any one of claims 1 to 4, wherein the mounting portion is formed by bending an end portion of the thick wire. An outdoor unit in which a flat fan guard is disposed on an end surface of a sheet metal exterior body, and a propeller fan for an outdoor heat exchanger is disposed in the back of the flat fan guard,
Flat fan guard
The outer periphery of the fan guard is formed smaller than the inner periphery of the end face of the exterior body, a plurality of fine wires are arranged in columns and rows, a thick wire is arranged between the thin wires, and both ends of any of the thick wires An outdoor unit comprising an attachment portion for attaching the fan guard to the end face of the exterior body.

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