JP6365582B2 - Refrigeration unit outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of a refrigeration apparatus.

  Conventionally, an up-blowing type outdoor unit in which a fan and a bell mouth are arranged inside a casing has been proposed.

  For example, the outdoor unit described in Patent Document 1 shows a configuration in which a bell mouth arranged in an upper space inside a casing is covered with a plurality of side plates from the periphery.

  Here, in the top-blowing type outdoor unit described in Patent Document 1, the plurality of side plates provided around the bell mouth have no unevenness and have a planar shape spreading in the vertical direction. For this reason, there is a large gap between the upper end of the bell mouth and the side plate in plan view.

  As described above, when there is a large gap between the upper end of the bell mouth and the side plate, the air flow that has passed through the bell mouth upward creates an air vortex in the gap, causing a blowout. There is a possibility that the air volume cannot be increased sufficiently.

  This invention is made | formed in view of the point mentioned above, It is providing the outdoor unit of the freezing apparatus which can increase an air volume in the structure where the side plate is provided around the bell mouth.

The outdoor unit of the refrigeration apparatus according to the first aspect includes a fan, a bell mouth, and a casing. Bellmouth covers the fan. The casing accommodates the fan and the bell mouth inside so that the air flow is directed upward. The casing has a side plate including a surface that forms an air flow path downstream of the bell mouth. The side plate has a first side surface portion and a second side surface portion. The first side surface portion faces the upper edge of the bell mouth. The second side surface portion is provided below the first side surface portion. The gap in plan view between the first side surface part and the upper edge of the bell mouth is smaller than the gap in plan view between the second side part and the upper edge of the bell mouth. The side plate has an inclined surface and a vertical portion. The inclined surface is inclined at the upper end of the side plate so as to be away from the rotation axis of the fan as it extends upward. The vertical portion is a portion extending in the vertical direction from the first side surface portion to the lower end of the inclined surface.

  In the outdoor unit of the refrigeration apparatus, the gap in plan view between the first side surface portion and the upper edge of the bell mouth is smaller than the gap in plan view between the second side surface portion and the upper edge of the bell mouth. It is configured. For this reason, since the gap in the plan view between the bell mouth and the side plate immediately after passing the bell mouth in the air flow direction can be reduced, the generation of air vortex immediately after passing the bell mouth of the air flow is suppressed and the air volume is increased. It becomes possible to make it.

  Moreover, in the outdoor unit of this refrigeration apparatus, before the air flow that has passed through the bell mouth flows out to the outside of the casing, it is possible to flow a portion where the flow path expands toward the downstream side by the inclined surface. This makes it possible to obtain a diffuser effect.

  For example, when a net (for example, a wire net) is provided at the upper end outlet of the casing, an effect of reducing pressure loss when an air flow hits the net is obtained.

  In the outdoor unit of the refrigeration apparatus, the vertical portion formed by the side plate can be made to flow before the air flow after passing through the bell mouth is sent to the inclined surface. Thereby, since it becomes possible to ensure a vertical part in the air flow path, it is possible to further increase the air volume.

  The outdoor unit of the refrigeration apparatus according to the second aspect includes a fan, a bell mouth, a casing, and a diffuser surface. Bellmouth covers the fan. The casing accommodates the fan and the bell mouth inside so that the air flow is directed upward. The casing has a side plate including a surface that forms an air flow path downstream of the bell mouth. The side plate has a first side surface portion and a second side surface portion. The first side surface portion faces the upper edge of the bell mouth. The second side surface portion is connected below the first side surface portion. The gap in plan view between the first side surface part and the upper edge of the bell mouth is smaller than the gap in plan view between the second side part and the upper edge of the bell mouth. The diffuser surface is provided below the upper end of the casing, above the upper end of the bell mouth, and outside the upper end of the bell mouth in plan view. The diffuser surface is inclined away from the rotation axis of the fan as it goes upward. In plan view, the first side surface portion and the diffuser surface are provided at different positions.

  In the outdoor unit of the refrigeration apparatus, the gap in plan view between the first side surface portion and the upper edge of the bell mouth is smaller than the gap in plan view between the second side surface portion and the upper edge of the bell mouth. It is configured. For this reason, since the gap in the plan view between the bell mouth and the side plate immediately after passing the bell mouth in the air flow direction can be reduced, the generation of air vortex immediately after passing the bell mouth of the air flow is suppressed and the air volume is increased. It becomes possible to make it.

  Further, in the outdoor unit of this refrigeration apparatus, before the air flow that has passed through the bell mouth flows out to the outside of the casing, it is possible to flow the portion where the flow path expands toward the downstream side formed by the diffuser surface. . This makes it possible to obtain a diffuser effect.

  The outdoor unit of the refrigeration apparatus according to the third aspect includes a fan, a bell mouth, and a casing. The bell mouth covers the periphery of the fan (except that the downstream end of the air flow is enlarged). The casing accommodates the fan and the bell mouth inside so that the air flow is directed upward. The casing has a first side surface portion and a second side surface portion. The first side surface portion faces the upper edge of the bell mouth and forms an air flow path on the downstream side of the bell mouth. The second side surface portion is provided below the first side surface portion. The gap in plan view between the first side surface part and the upper edge of the bell mouth is smaller than the gap in plan view between the second side part and the upper edge of the bell mouth.

  In the outdoor unit of the refrigeration apparatus, the gap in plan view between the first side surface portion and the upper edge of the bell mouth is smaller than the gap in plan view between the second side surface portion and the upper edge of the bell mouth. It is configured. For this reason, since the gap in the plan view between the bell mouth and the side plate immediately after passing the bell mouth in the air flow direction can be reduced, the generation of air vortex immediately after passing the bell mouth of the air flow is suppressed and the air volume is increased. It becomes possible to make it.

  The outdoor unit of the refrigeration apparatus according to the fourth aspect is an outdoor unit of the refrigeration apparatus according to any one of the first to third aspects, and further includes a heat exchanger. The heat exchanger is provided below the fan. The second side surface portion is provided outside the heat exchanger in plan view.

  In the outdoor unit of the refrigeration apparatus, when the heat exchanger provided below the fan is located outside the fan in plan view, the second side surface portion of the side plate is disposed outside the heat exchanger in plan view. Even if it is provided, the gap in the plan view between the bell mouth and the side plate immediately after passing the bell mouth in the air flow direction can be reduced by narrowing the flow path by the first side surface portion of the side plate. . For this reason, even when the heat exchanger is located outside the fan in plan view, it is possible to suppress the generation of air vortex immediately after passing the bell mouth of the air flow and increase the air volume.

The outdoor unit of the refrigeration apparatus according to the fifth aspect is the outdoor unit of the refrigeration apparatus according to any of the first to fourth aspects, and the casing has a mounting surface. The mounting surface is the upper end of the casing and is provided at the peripheral edge portion in plan view. The mounting surface spreads flat.

  In the outdoor unit of the refrigeration apparatus, a mounting surface is provided at the peripheral edge that does not hinder the air flow at the upper end of the casing. Thereby, a plurality of outdoor units can be stacked vertically and stably arranged, and a storage place can be easily secured.

The outdoor unit of a refrigeration apparatus according to the first aspect, suppressing the occurrence of air vortices immediately after the bell mouth passage of air flow This will allow for some increase the air volume, it is possible to obtain a diffuser effect, the air Since a vertical portion can be secured in the flow path, the air volume can be further increased.

In the outdoor unit of the refrigeration apparatus according to the second aspect, it is possible to suppress the generation of air vortex immediately after passing the bell mouth of the air flow, increase the air volume, and obtain a diffuser effect.

In the outdoor unit of the refrigeration apparatus according to the third aspect, it is possible to suppress the generation of air vortex immediately after the air flow passes through the bell mouth and increase the air volume.

  In the outdoor unit of the refrigeration apparatus according to the fourth aspect, even when the heat exchanger is located outside the fan in plan view, the generation of air vortex immediately after passing the bell mouth of the air flow is suppressed, and the air volume Can be increased.

In the outdoor unit of the refrigeration apparatus according to the fifth aspect , a plurality of outdoor units can be stacked vertically and stably arranged, and the storage location can be easily secured.

It is a schematic block diagram of the air conditioning apparatus by which the outdoor unit which concerns on one Embodiment of this invention was employ | adopted. It is an external appearance perspective view of an outdoor unit. It is a disassembled perspective view of the casing of an outdoor unit, an outdoor heat exchanger, and a fan module. It is a top view which shows the positional relationship of an outdoor heat exchanger, an outdoor fan, and a casing. It is the external appearance schematic perspective view (state except a blowing grill) which looked at the upper part of the casing and the fan module from the upper right. It is the external appearance schematic plan view (state which excluded the blowing grill) which looked at the upper part of the casing and the fan module from the upper part. It is the external appearance schematic perspective view which looked at the upper vicinity of a casing and the fan module from diagonally right forward (state which excluded the blowing grille and the front side ventilation side board). It is the external appearance schematic perspective view which looked at the upper vicinity of the casing and the fan module from the diagonally forward right (state excluding the blowout grill, the front side fan side plate, the rear side fan side plate, and the right side fan side plate). It is a general | schematic external appearance perspective view of a right ventilation side board. It is a figure which shows the arrangement | positioning relationship in the front-back cross section containing the rotating shaft of an outdoor fan. It is a top view which shows the arrangement | positioning relationship of the casing which concerns on the modification B, an outdoor fan, and a bell mouth. 10 is a front view of a side plate according to Modification B. FIG.

  Hereinafter, an embodiment of an outdoor unit of a refrigeration apparatus and its modification will be described based on the drawings. Note that the specific configuration of the outdoor unit of the refrigeration apparatus is not limited to the following embodiments and modifications thereof, and can be changed without departing from the scope of the invention.

(1) Configuration of Air Conditioner FIG. 1 is a schematic configuration diagram of an air conditioner 1 in which an outdoor unit 2 according to an embodiment is employed.

  The air conditioner 1 is a device capable of cooling and heating a room such as a building by performing a vapor compression refrigeration cycle. The air conditioner 1 is mainly configured by connecting an outdoor unit 2 and indoor units 3a and 3b. Here, the outdoor unit 2 and the indoor units 3 a and 3 b are connected via a liquid refrigerant communication tube 4 and a gas refrigerant communication tube 5. That is, the vapor compression refrigerant circuit 6 of the air conditioner 1 is configured by connecting the outdoor unit 2 and the indoor units 3 a and 3 b via the refrigerant communication tubes 4 and 5.

  The outdoor unit 2 is installed outdoors (on the roof of a building, in the vicinity of the wall surface of the building, etc.) and constitutes a part of the refrigerant circuit 6. The outdoor unit 2 mainly includes an accumulator 7, a compressor 8, an oil separator 9, a four-way switching valve 10, an outdoor heat exchanger 11, an outdoor expansion valve 12, a liquid side closing valve 13, and a gas side. A closing valve 14 and an outdoor fan 15 are provided. Each device and the valve are connected by refrigerant pipes 16 to 24.

  The indoor units 3 a and 3 b are installed indoors (such as a living room or a ceiling space) and constitute a part of the refrigerant circuit 6. The indoor unit 3a mainly has an indoor expansion valve 31a, an indoor heat exchanger 32a, and an indoor fan 33a. The indoor unit 3b mainly includes an indoor expansion valve 31b, an indoor heat exchanger 32b, and an indoor fan 33b.

  The refrigerant communication pipes 4 and 5 are refrigerant pipes that are constructed on site when the air conditioner 1 is installed at an installation location such as a building. One end of the liquid refrigerant communication tube 4 is connected to the liquid side closing valve 13 of the outdoor unit 2, and the other end of the liquid refrigerant communication tube 4 is connected to the liquid side ends of the indoor expansion valves 31a and 31b of the indoor units 3a and 3b. Has been. One end of the gas refrigerant communication pipe 5 is connected to the gas side shut-off valve 14 of the outdoor unit 2, and the other end of the gas refrigerant communication pipe 5 is connected to the gas side end of the indoor heat exchangers 32a and 32b of the indoor units 3a and 3b. It is connected.

(2) Overall Configuration of Outdoor Unit FIG. 2 is an external perspective view of the outdoor unit 2. FIG. 3 is an exploded perspective view of the casing 40, the outdoor heat exchanger 11, and the fan module 71 of the outdoor unit 2.

  In the following description, “top”, “bottom”, “left”, “right”, “front”, “back”, “front”, and “back” are shown in FIG. 2 unless otherwise specified. The direction when the outdoor unit 2 to be viewed is viewed from the front (left oblique front side of the drawing) is meant.

  The outdoor unit 2 is called an upper blow type structure that takes air into the casing 40 from below and blows air out of the casing 40 from above. The outdoor unit 2 mainly has a substantially rectangular parallelepiped box-shaped casing 40, a fan module 71, a blowing grill 73, and refrigerant circuit components that constitute a part of the refrigerant circuit 6. The refrigerant circuit constituent parts of the outdoor unit 2 include a compressor 8, an outdoor heat exchanger 11, an accumulator 7, an oil separator 9, a four-way switching valve 10, an outdoor expansion valve 12, a liquid side closing valve 13, and a gas side. There are a closing valve 14 and refrigerant pipes 16 to 24.

  The casing 40 mainly includes a bottom frame 51 that spans a pair of installation legs 41 that extend in the left-right direction, a column 61 that extends vertically from a corner of the bottom frame 51, a front panel 65, and a fan module 71. A front blowing side plate 80, a rear blowing side plate 85, a right blowing side plate 90, and a left blowing side plate 95.

  The bottom frame 51 forms the bottom surface of the casing 40, and the outdoor heat exchanger 11 is provided on the bottom frame 51. In the present embodiment, the bottom frame 51 is configured by combining the left first bottom frame 51a and the right second bottom frame 51b. Here, the outdoor heat exchanger 11 is a substantially U-shaped heat exchanger in plan view facing the back surface and both left and right side surfaces of the casing 40, and substantially forms the back surface and both left and right side surfaces of the casing 40. . The outdoor heat exchanger 11 is disposed along the left edge, the rear edge, and the right edge of the bottom frame 51.

  The front panel 65 is bridged between the support columns 61 on the front side below the fan module 71 and forms the front surface of the casing 40.

  In the casing 40, refrigerant circuit components other than the outdoor fan 15 and the outdoor heat exchanger 11 are also housed. Here, the compressor 8 is a device that compresses the refrigerant, and is provided on the bottom frame 51. The accumulator 7 is a refrigerant container that temporarily stores the refrigerant before being sucked into the compressor 8, and is provided on the bottom frame 51. The oil separator 9 is a device that separates refrigeration oil from the refrigerant discharged from the compressor 8, and is provided on the bottom frame 51.

  The fan module 71 is provided on the upper side of the outdoor heat exchanger 11 and has a bell mouth 72 and the outdoor fan 15. The bell mouth 72 is attached to the upper ends of the four columns 61. The lower part of the bell mouth 72 has a rectangular shape in plan view like the bottom frame 51, and the upper part of the bell mouth 72 has a cylindrical shape with the axial direction as the vertical direction. The cylindrical shape of the upper portion of the bell mouth 72 is located inside the rectangular shape of the lower portion in plan view. The cylindrical portion of the upper portion of the bell mouth 72 covers the outdoor fan 15 from the periphery, and constitutes a part of the flow path of the air flow. The rectangular shape of the lower part of the bell mouth 72 and the cylindrical shape of the upper part are smoothly connected via a curved surface. The outdoor fan 15 is disposed inside the cylindrical shape, which is the upper part of the bell mouth 72, in a posture in which the direction in which the rotation shaft 75 extends is the vertical direction. The outdoor fan 15 is connected to a fan motor (not shown) and is driven and controlled.

  The front side of the fan module 71 is covered with a front blowing side plate 80, the rear side is covered with a rear blowing side plate 85, the right side is covered with a right blowing side plate 90, and the left side is covered with a left blowing side plate 95. The front air blowing side plate 80, the rear air blowing side plate 85, the right air blowing side plate 90, and the left air blowing side plate 95 constitute a substantially rectangular parallelepiped box having an upper surface and a lower surface that are open to the bell mouth 72 and the outdoor fan 15. Housed inside.

  The front blower side plate 80, the rear blower side plate 85, the right blower side plate 90, and the left blower side plate 95 are all fixed to the column 61 and constitute an upper part of the column 61 in the casing 40. Further, the front air blowing side plate 80, the rear air blowing side plate 85, the right air blowing side plate 90, and the left air blowing side plate 95 are screwed and fixed in the vicinity of the front, rear, left and right end portions.

  In the upper part of the fan module 71 (upper part of the casing 40), the right diffuser surface 91, which is a part of the right air blowing side plate 90, and the left diffuser surface 96, which is a part of the left air blowing side plate 95, are mainly supported. In addition, a diffuser is configured by the front inclined surface 83 which is a part of the front blowing side plate 80 and the rear inclined surface 88 which is a part of the rear blowing side plate 85.

  In addition, a blowout grill 73 spreading on a plane is provided at an outlet above the casing 40 (above the diffuser). The blowout grill 73 is not particularly limited, but a metal wire mesh is used in the present embodiment.

(3) Structure of the upper part of the casing of the outdoor unit FIG. 4 is a plan view showing the positional relationship among the outdoor heat exchanger 11, the outdoor fan 15, and the casing 40. FIG. FIG. 5 is an external schematic perspective view of the upper portion of the casing 40 and the fan module 71 as viewed from the upper right (the state where the blowout grill 73 is removed). FIG. 6 is a schematic external plan view of the upper portion of the casing 40 and the fan module 71 as viewed from above (a state where the blowout grill 73 is removed). FIG. 7 is a schematic external perspective view of the vicinity of the upper portion of the casing 40 and the fan module 71 when viewed from the right front (a state in which the blowout grill 73 and the front blowing side plate 80 are removed). FIG. 8 is a schematic external perspective view of the upper vicinity of the casing 40 and the fan module 71 as viewed from the right front (a state in which the blowing grill 73, the front blowing side plate 80, the rear blowing side plate 85, and the right blowing side plate 90 are removed). is there. FIG. 9 is a schematic external perspective view of the right blast side plate 90. FIG. 10 is a diagram showing an arrangement relationship in the front-rear cross section including the rotation shaft 75 of the outdoor fan 15.

  As described above, the front, rear, left and right sides of the bell mouth 72 are covered with the front blowing side plate 80, the rear blowing side plate 85, the right blowing side plate 90, and the left blowing side plate 95. The front air blowing side plate 80, the rear air blowing side plate 85, the right air blowing side plate 90, and the left air blowing side plate 95 are located above the cylindrical portion of the upper portion of the bell mouth 72 (on the downstream side of the air flow F). The flow path leading to is formed. These front air blowing side plate 80, rear air blowing side plate 85, right air blowing side plate 90, and left air blowing side plate 95 are all constituted by sheet metal plate members.

  In the present embodiment, the front fan side plate 80 and the rear fan side plate 85 have a target shape in the front-rear direction, and the right fan side plate 90 and the left fan side plate 95 are target in the left-right direction. It has a shape.

  The front air blowing side plate 80 has a front upper surface portion 81, a front lower surface portion 82, a front inclined surface 83, and a front placement surface 84. The front blower side plate 80 is formed by pressing or bending one plate-like member. As shown in FIGS. 2, 4, and 10, the front upper surface portion 81 is vertically and horizontally movable so as to cover the front side of the upper end edge of the cylindrical portion above the bell mouth 72 and the front portion including the vicinity of the top and bottom thereof. It is the part of the planar shape that spreads out. The upper portion of the front upper surface portion 81 extends to the vicinity of the upper end of the casing 40. Note that the vicinity of the center in the left-right direction at the upper end of the front upper surface portion 81 is positioned lower than the vicinity of both ends in the left-right direction at the upper end of the front upper surface portion 81 so as to be continuous with the lower end portion of the front inclined surface 83. . The front upper surface portion 81 extends from the lower end of the front upper surface portion 81 to the lower end portion of the upper front inclined surface 83 via a portion above the front side of the upper end edge of the cylindrical portion above the bell mouth 72. Until then, it has a portion (vertical portion) that extends in the vertical direction and extends to the left and right. 2, 4 and 10, the front lower surface portion 82 is positioned below the front upper surface portion 81 and extends vertically and horizontally so as to cover the front side of the rectangular portion below the bell mouth 72. It is the part of the spread planar shape. A lower portion of the front lower surface portion 82 extends to the upper end of the support 61. As shown in FIGS. 2, 5, 6, and 10, the front mounting surface 84 constitutes the upper end of the casing 40 and is a surface that spreads flat so that the normal direction is the vertical direction. is there. The front placement surface 84 is provided so as to rim the front upper end edge of the casing 40 by extending in the left-right direction. The rear end portions near the left and right end portions of the front mounting surface 84 are continuous with the upper end of the front upper surface portion 81. Note that the vicinity of the center in the left-right direction at the rear end of the front mounting surface 84 is located on the front side so as to be continuous with the upper end portion of the front inclined surface 83 as compared with the vicinity of both ends in the left-right direction at the rear end. . As shown in FIGS. 2, 5, 6, and 10, the front inclined surface 83 includes a central portion in the left-right direction on the rear side of the front mounting surface 84 and a central portion in the left-right direction on the upper end of the front upper surface portion 81. Are inclined so that the upper part is away from the rotation shaft 75 of the outdoor fan 15. The front inclined surface 83 is provided along the front edge of the upper opening of the casing 40 so that the longitudinal direction is the left-right direction.

  The rear air blowing side plate 85 includes a rear upper surface portion 86, a rear lower surface portion 87, a rear inclined surface 88, and a rear placement surface 89. The rear blower side plate 85 has a target shape in the front-rear direction with respect to the front blower side plate 80, and a description thereof is omitted. In the present embodiment, parts having a common shape are used as the front blowing side plate 80 and the rear blowing side plate 85. Thereby, it is possible to prevent the parts from becoming complicated.

  The right blast side plate 90 has a right diffuser surface 91, a right vertical curved surface 92, a right side surface 93, and a right placement surface 94. The right blast side plate 90 is formed by pressing or bending one plate-like member. 4, 5, 7, and 9, the right side surface 93 is a planar surface that covers the right side above the column 61 of the casing 40 and the right side portion of the outdoor heat exchanger 11, The mouse 72 extends from the lower end to slightly above the upper end. As shown in FIGS. 5, 6, 7, and 9, the right mounting surface 94 extends from the upper end of the right side surface 93 toward the inner side in the horizontal direction (the left side in the horizontal direction), and the normal direction is the vertical direction. It is a surface that spreads flatly. The right placement surface 94 is provided so as to extend and rim the upper right edge of the casing 40 in the front-rear direction. As shown in FIGS. 5, 6, 7, and 9, the right diffuser surface 91 is provided to be inclined so as to extend downward from the inner side (left side) end of the right mounting surface 94 toward the left side. It is an inclined surface. That is, the right diffuser surface 91 is inclined so as to be away from the rotating shaft 75 of the outdoor fan 15 as it goes from below to above. The right diffuser surface 91 extends so as to cover the space between the right edge of the upper end portion of the bell mouth 72 and the right mounting surface 94 in plan view, and the lower end (left end portion) of the right diffuser surface 91 is the bell mouth 72. A circular arc shape is formed along the right edge of the upper end portion. Most of the right diffuser surface 91 is located below the blowing grill 73. The lower end of the right diffuser surface 91 extends further below the lower end of the front inclined surface 83 of the front air blowing side plate 80 and the lower end of the rear inclined surface 88 of the rear air blowing side plate 85. As shown in FIGS. 6, 7, and 9, the right vertical curved surface 92 is a curved surface that extends downward in the vertical direction from the arc-shaped portion at the lower end (left end portion) of the right diffuser surface 91. The lower end of the right vertical curved surface 92 extends downward to a position overlapping with the right side of the arc portion at the upper end of the bell mouth 72 in the left-right direction. The lower end of the right vertical curved surface 92 is along the right edge of the arc portion at the upper end of the bell mouth 72, with a gap of several millimeters formed between the right edge of the arc portion at the upper end of the bell mouth 72. It extends to.

  The left blast side plate 95 has a left diffuser surface 96, a left vertical curved surface 97, a left side surface 98, and a left placement surface 99. The left blast side plate 95 has a target shape in the left-right direction with respect to the right blast side plate 90, and therefore the description thereof is omitted. This left blast side plate 95 is also formed by pressing or bending one plate-like member. In the present embodiment, parts having a common shape are used as the right air blowing side plate 90 and the left air blowing side plate 95. Thereby, it is possible to prevent the parts from becoming complicated.

The front air blowing side plate 80, the rear air blowing side plate 85, the right air blowing side plate 90, and the left air blowing side plate 95 are all configured as separate members, but are shown in FIGS. 5, 6, and 8. As described above, the front blower side plate 80 has a fixing piece (not shown) extending downward near the left front side of the left diffuser surface 96, and by a screw 69 extending in the vertical direction in the vicinity of the left front side of the left diffuser surface 96, The left diffuser surface 96 is screwed and fixed. Thereby, the front air blowing side plate 80 and the left air blowing side plate 95 are fixed. Similarly, the front blower side plate 80 has a fixing piece (not shown) that extends downward near the right front side of the right diffuser surface 91, and a screw 69 that extends vertically near the right front side of the right diffuser surface 91. Thus, the right diffuser surface 91 is screwed and fixed. Thereby, the front air blowing side plate 80 and the right air blowing side plate 90 are fixed. Similarly, the rear blower side plate 85 has a fixing piece (not shown) extending downward near the left rear side of the left diffuser surface 96, and in the vertical direction near the left rear side of the left diffuser surface 96. The screw 69 extends and is fixed to the left diffuser surface 96 by screwing. Thereby, the rear air blowing side plate 85 and the left air blowing side plate 95 are fixed. Similarly, the rear blower plate 8 5 has a fixing piece (not shown) out extends below the right rear side near the right diffuser surface 91, vertical direction in the right rear side near the right diffuser surface 91 The right-hand diffuser surface 91 is screwed and fixed by a screw 69 extending in the right direction. Thereby, the rear air blowing side plate 85 and the right air blowing side plate 90 are fixed.

(4) Arrangement relationship of upper portion of casing of outdoor unit Front lower surface portion 82 of front air blowing side plate 80, rear lower surface portion 87 of rear air blowing side plate 85, right side surface 93 of right air blowing side plate 90, and left air blowing side plate As shown in FIG. 4, the left side surface 98 of 95 is located outside the outdoor heat exchanger 11 in a plan view.

  In this embodiment, the outdoor heat exchanger 11 is arrange | positioned outside the circular arc of the upper end of the outdoor fan 15 or the bellmouth 72 in planar view, as shown in FIG.

  Further, the front upper surface portion 81 of the front air blowing side plate 80 is located on the inner side (rear side) of the front lower surface portion 82 of the front air blowing side plate 80 as shown in FIGS. That is, as shown in FIG. 10, the distance A in the front-rear direction (the shortest distance in the front-rear direction) between the front upper surface portion 81 of the front air blowing side plate 80 and the upper front end of the bell mouth 72 is the front lower surface of the front air blowing side plate 80. It is configured to be shorter than the distance B (the shortest distance in the front-rear direction) between the portion 82 and the upper front end of the bell mouth 72. As described above, the front air blowing side plate 80 is recessed toward the rear side so as to approach the front side portion at the upper end of the bell mouth 72 because the front upper surface portion 81 is located on the rear side relative to the front lower surface portion 82. It has a shape.

  Similarly, the rear upper surface portion 86 of the rear air blowing side plate 85 is located on the inner side (front side) of the rear lower surface portion 87 of the rear air blowing side plate 85 as shown in FIGS. That is, as shown in FIG. 10, the distance in the front-rear direction between the rear upper surface portion 86 of the rear air blowing side plate 85 and the upper rear end portion of the bell mouth 72 is the rear lower surface portion 87 of the rear air blowing side plate 85. It is configured to be shorter than the distance in the front-rear direction from the upper rear end of the bell mouth 72.

  As described above, the rear air blowing side plate 85 has the rear upper surface portion 86 positioned on the front side with respect to the rear lower surface portion 87, and thus faces the front side so as to approach the rear side portion of the upper end of the bell mouth 72. It has a concave shape.

  Further, the front inclined surface 83 of the front air blowing side plate 80, the rear inclined surface 88 of the rear air blowing side plate 85, the right diffuser surface 91 of the right air blowing side plate 90, and the left diffuser surface 96 of the left air blowing side plate 95 are flat surfaces. They are provided at positions that do not overlap in view (different positions) and are arranged so as to surround the outside of the circle at the upper end of the bell mouth 72 in plan view.

  It should be noted that the front mounting surface 84 of the front air blowing side plate 80, the rear mounting surface 89 of the rear air blowing side plate 85, the right mounting surface 94 of the right air blowing side plate 90, and the left mounting surface 99 of the left air blowing side plate 95. And constitutes the upper edge of the casing 40 and is provided so as to spread on a horizontal plane at the same height position.

(5) Features (5-1)
Even if the front upper surface portion 81 in the front air blowing side plate 80 and the rear upper surface portion 86 in the rear air blowing side plate 85 are not provided, the air flow flowing out from the flow path of the cylindrical portion at the upper end of the bell mouth 72 has expanded rapidly. When guided to the flow path, there is a possibility that an air vortex may occur near the front and rear of the bell mouth 72 on the downstream side in the air flow direction at the outlet of the bell mouth 72.

  On the other hand, in the outdoor unit 2 of the air conditioning apparatus 1 according to the present embodiment, the front lower surface portion of the front 40 on the front blowing side plate 80 of the portion of the casing 40 that covers the periphery of the bell mouth 72. Rather than spreading the surface of 82 upward as it is, the front upper surface portion can be positioned behind the front lower surface portion 82 and closer to the front end portion of the upper end portion of the bell mouth 72. 81 is provided. Similarly, in the rear rear fan side plate 85, the upper surface of the bell mouth 72 is more forward than the rear lower surface portion 87 rather than expanding the surface of the rear lower surface portion 87 as it is upward. A rear upper surface portion 86 is provided so as to be able to follow the position close to the rear end of the portion.

  As a result, it is possible to suppress the generation of air vortices on the downstream side of the bell mouth 72, suppress the reduction of the air volume formed by the outdoor fan 15, and increase the air volume.

(5-2)
Further, in the outdoor unit 2 of the air conditioner 1 according to the present embodiment, in the vicinity of the upper end of the front air blowing side plate 80, the downstream side of the air flow is located on the front side (the upper side is away from the rotating shaft 75 of the outdoor fan 15. In the same manner, an inclined front side inclined surface 83 is provided near the upper end of the rear air blowing side plate 85 so that the downstream side of the air flow is located on the rear side (the upper side is the rotational axis of the outdoor fan 15). A rear inclined surface 88 is provided which is inclined (away from 75). Thereby, before the air flow which passed the bell mouth 72 is guide | induced outside from the upper end of the casing 40, it is possible to enlarge the flow path of an air flow gently. Thereby, it is possible to obtain a diffuser effect.

  In particular, the right blower side plate 90 is provided with a right diffuser surface 91 that is inclined so that the downstream side of the air flow is located on the right side (upwardly away from the rotating shaft 75 of the outdoor fan 15). Similarly, at 95, a left diffuser surface 96 that is inclined so as to be located on the left side toward the downstream side of the air flow (so as to be away from the rotating shaft 75 of the outdoor fan 15) is provided. Thereby, before the air flow which passed the bell mouth 72 is guide | induced outside from the upper end of the casing 40, it becomes possible to enlarge the flow path of an air flow more gently. As a result, a more sufficient diffuser effect can be obtained. Particularly, most of the right diffuser surface 91 and the left diffuser surface 96 are located below the blowout grill 73, so that the air flow that has passed through the bell mouth 72 reaches the blowout grill 73. The flow velocity of can be effectively reduced. For this reason, it is possible to reduce the pressure loss due to the air flow colliding with the blowing grill 73, suppress the reduction of the air volume formed by the outdoor fan 15, and increase the air volume.

(5-3)
Furthermore, in the outdoor unit 2 of the air conditioner 1 according to the present embodiment, the front upper surface portion 81 of the front air blowing side plate 80 extends in the vertical direction also in the portion on the air flow downstream side from the bell mouth 72, and the rear air blowing Similarly, the rear upper surface portion 86 of the side plate 85 also spreads in the vertical direction in the portion on the downstream side of the air flow from the bell mouth 72. For this reason, the air flow after passing through the bell mouth 72 can be made to flow straight in the vertical direction before being sent to the front inclined surface 83 and the rear inclined surface 88.

  Further, the right vertical curved surface 92 of the right air blowing side plate 90 also extends in the vertical direction in the portion on the downstream side of the air flow from the bell mouth 72, and the left vertical curved surface 97 of the left air blowing side plate 95 is also downstream of the air flow from the bell mouth 72. The side portion also spreads in the vertical direction. Therefore, the air flow after passing through the bell mouth 72 can be made to flow straight in the vertical direction before being sent to the right diffuser surface 91 and the left diffuser surface 96.

  As a result, a long vertical portion can be secured in the air flow path that has passed through the bell mouth 72, so that the reduction of the air volume by the outdoor fan 15 can be suppressed and the air volume can be further increased. .

(5-4)
Moreover, in the outdoor unit 2 of the air conditioner 1 according to the present embodiment, the outdoor heat exchanger 11 is disposed outside the arcs of the upper ends of the outdoor fan 15 and the bell mouth 72 in a plan view. A support column 61 extending in the vertical direction is arranged further outside the exchanger 11. The rectangular portion at the lower end of the bell mouth 72 is fixed to the upper end of the column 61. For this reason, the size in the front-rear direction of the rectangular portion at the lower end of the bell mouth 72 is larger than the arc at the upper end of the outdoor fan 15 or the bell mouth 72.

  As described above, even when the size of the rectangular portion at the lower end of the bell mouth 72 in the front-rear direction is larger than the arc at the upper end of the outdoor fan 15 or the bell mouth 72, the outdoor unit 2 according to the embodiment described above. The front lower surface portion 82 below the front air blowing side plate 80 is not expanded as it is, but the front upper surface portion 81 closer to the arc portion at the upper end of the bell mouth 72 is adopted, and the lower side of the rear air blowing side plate 85 is adopted. The rear lower surface portion 87 is not expanded as it is, but a rear upper surface portion 86 that is closer to the arc portion at the upper end of the bell mouth 72 is employed. Therefore, even when the outdoor heat exchanger 11 is disposed outside the arc at the upper end of the outdoor fan 15 or the bell mouth 72 in a plan view, the generation of air vortices on the downstream side of the bell mouth 72 is prevented. It is possible to suppress the reduction of the air volume and increase the air volume.

(5-5)
Further, in the outdoor unit 2 of the air conditioner 1 according to the present embodiment, the front mounting surface 84 of the front air blowing side plate 80, the rear mounting surface 89 of the rear air blowing side plate 85, and the right mounting of the right air blowing side plate 90. The mounting surface 94 and the left mounting surface 99 of the left blast side plate 95 both constitute the upper edge of the casing 40 and are provided so as to spread on a horizontal plane at the same height position.

  For this reason, when storing a plurality of outdoor units 2 in a warehouse or the like, the outdoor units 2 can be stacked vertically and stably stacked, thereby reducing the storage space area. It is possible.

(6) Modifications The above embodiment can be modified as appropriate as shown in the following modifications. Each modification may be applied in combination with another modification as long as no contradiction occurs.

(6-1) Modification A
In the above embodiment, as an example of the side plate having the first side surface portion and the second side surface portion, the front air blowing side plate 80 having the front upper surface portion 81 and the front lower surface portion 82, the rear upper surface portion 86 and the rear lower surface portion 87 are used. The rear air blowing side plate 85 having the above has been described as an example.

  However, the side plates having the first side surface portion and the second side surface portion are not limited to those employed only on the front side and the rear side of the casing 40, and the side plates having the first side surface portion and the second side surface portion are the front side, the rear side, You may make it employ | adopt for all of the left side and the right side.

  That is, in the above-described embodiment, the right-side air blowing side plate 90 and the left-side air blowing side plate 95 provided with the diffuser surface and the like are also spread in the vertical direction in the same manner as the front air-side air-side plate 80 and the rear air-side air-side plate 85 in the above-described embodiment. You may be comprised so that it may have 1 side part and 2nd side part. Even in this case, it is possible to suppress the generation of air vortices on the downstream side of the bell mouth 72.

(6-2) Modification B
In the above embodiment, as an example of the first side surface portion and the second side surface portion of the side plate, the front upper surface portion 81, the front lower surface portion 82, the rear upper surface portion 86, and the rear lower surface portion 87, which are flat surfaces spreading in the vertical direction. Each was described with an example.

  However, examples of the first side surface portion and the second side surface portion of the side plate are not limited to this. For example, as shown in FIGS. 11 and 12, the side plate is formed by pressing a sheet metal or the like. Four common blower side plates 280 may be used in combination.

  The common blower side plate 280 has a first facing surface 285 and a second facing surface 286, respectively, so as to surround the bell mouth 72. That is, the first facing surface 285 of a certain common air blowing side plate 280 is disposed so as to face the second facing surface 286 of the adjacent common air blowing side plate 280. Further, the common blower side plate 280 has a cylindrical peripheral surface portion 281 extending in the vertical direction so as to follow the curved surface around the cylindrical portion above the bell mouth 72. The upper end of the cylindrical peripheral surface portion 281 is located further above the upper end of the bell mouth 72. Further, the common blower side plate 280 has an upper inclined surface 283 that is inclined above the cylindrical peripheral surface portion 281 so as to be away from the rotation shaft 75 of the outdoor fan 15 as it is upward. And the common ventilation side board 280 has the lower side inclined surface 282 inclined below the cylindrical surrounding surface part 281 so that it may leave | separate from the rotating shaft 75 of the outdoor fan 15 in the downward direction.

  Even in such a common blower side plate 280, the cylindrical peripheral surface portion 281 is configured to be closer to the arc portion at the upper end of the bell mouth 72 than the lower inclined surface 282. The air vortex on the downstream side of the bell mouth 72 can be suppressed.

(6-3) Modification C
In the said embodiment, the case where the length of the left-right direction of the front ventilation side board 80 and the rear ventilation side board 85 is longer than the front-back direction length of the right ventilation side board 90 and the left ventilation side board 95 in planar view is mentioned as an example. explained.

  However, it is not particularly limited to this, and the length in the left-right direction of the front blowing side plate 80 and the rear blowing side plate 85 and the length in the front-rear direction of the right blowing side plate 90 and the left blowing side plate 95 are the same. Alternatively, the length in the left-right direction of the front blowing side plate 80 and the rear blowing side plate 85 may be shorter than the length in the front-rear direction of the right blowing side plate 90 and the left blowing side plate 95.

  INDUSTRIAL APPLICATION This invention can be utilized for the outdoor unit of the freezing apparatus which accommodates the fan and the bell mouth in the casing.

1 Air conditioning equipment (refrigeration equipment)
2 Outdoor unit 7 Accumulator 8 Compressor 9 Oil separator 11 Outdoor heat exchanger (heat exchanger)
15 Outdoor fan (fan)
40 Casing 51 Bottom frame 72 Bell mouth 75 Rotating shaft 80 Front blower side plate (side plate)
81 Front upper surface portion (first side surface portion, vertical portion)
82 Front lower surface (second side)
83 Front inclined surface (inclined surface)
84 Front mounting surface (mounting surface)
85 Rear ventilation side plate (side plate)
86 Rear upper surface (first side, vertical)
87 Rear lower surface (second side)
88 Rear inclined surface (inclined surface)
89 Rear mounting surface (mounting surface)
90 Right-side ventilation plate 91 Right-side diffuser surface 94 Right-side mounting surface (mounting surface)
95 Left ventilation plate 96 Left diffuser surface 99 Left mounting surface (mounting surface)
202 Outdoor unit 280 Common ventilation side plate (side plate)
281 Cylindrical peripheral surface part (first side part, vertical part)
282 Lower slope (second side)
283 Upper inclined surface (inclined surface)
285 First opposing surface 286 Second opposing surface

JP 2014-194322 A

Claims (5)

Fan (15),
A bell mouth (72) covering the periphery of the fan;
A casing (40) that houses the fan and the bell mouth so that the air flow is directed upward;
With
The casing has side plates (80, 85) including a surface forming an air flow path downstream from the bell mouth,
The side plate includes a first side surface portion (81, 86, 281) facing the upper edge of the bell mouth, and a second side surface portion (82, 87, 282) below the first side surface portion. Have
Gaps in plan view with the upper edge of the bell mouth and the first side portion (A) is rather smaller than the gap (B) in a plan view of the upper edge of the bell mouth and the second side portion ,
The side plate has an inclined surface (83, 88, 283) that is inclined so as to be farther away from the rotation axis (75) of the fan at an upper end, and a vertical direction from the first side surface portion to a lower end of the inclined surface. A vertical portion (81, 86, 281) extending to
The outdoor unit (2) of the refrigeration apparatus (1).   Fan (15),
  A bell mouth (72) covering the periphery of the fan;
  A casing (40) that houses the fan and the bell mouth so that the air flow is directed upward;
With
  The casing has side plates (80, 85) including a surface forming an air flow path downstream from the bell mouth,
  The side plate includes a first side surface portion (81, 86, 281) facing the upper edge of the bell mouth, and a second side surface portion (82, 87, 282) connected below the first side surface portion. , And
  The gap (A) in plan view between the first side surface portion and the upper edge of the bell mouth is smaller than the gap (B) in plan view between the second side surface portion and the upper edge of the bell mouth,
  It is provided below the upper end of the casing, above the upper end of the bell mouth and outside the upper end of the bell mouth in plan view, and tilts away from the rotation axis of the fan toward the upper side. Further comprising a diffuser surface (91, 96)
  In plan view, the first side surface portion and the diffuser surface are provided at different positions.
The outdoor unit (2) of the refrigeration apparatus (1).   Fan (15),
  A bell mouth (72) covering the periphery of the fan (excluding the one in which the downstream end of the air flow is enlarged);
  A casing (40) that houses the fan and the bell mouth so that the air flow is directed upward;
With
  The casing is opposed to the upper edge of the bell mouth and forms a first air flow path portion (81, 86, 281) downstream of the bell mouth, and more than the first side face portion. A lower second side surface portion (82, 87, 282),
  The gap (A) in plan view between the first side surface portion and the upper edge of the bell mouth is smaller than the gap (B) in plan view between the second side surface portion and the upper edge of the bell mouth.
The outdoor unit (2) of the refrigeration apparatus (1). A heat exchanger (11) provided below the fan;
The second side surface portion is provided outside the heat exchanger in plan view.
The outdoor unit of the refrigeration apparatus according to any one of claims 1 to 3. The casing is provided at a peripheral edge in a plan view at the upper end and has a mounting surface (84, 89, 94, 99) that spreads flatly.
The outdoor unit of the freezing apparatus of any one of Claim 1 to 4 .

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