JP2011202952A - Wind direction guide unit and outdoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change direction of exhaust air while suppressing decline in air quantity and equipment efficiency in an outdoor unit for an air conditioner.SOLUTION: In the outdoor unit 1 for the air conditioner, a wind direction guide unit 11 is mounted to a grille 28 of an exhaust port 27. The wind direction guide unit 11 has an approximately rectangular frame 16, and lateral fins 12 serving as a wind direction guide plate and a vertical fin 13 serving as a partition plate are formed within the frame 16. The lateral fin 12 is formed by a plate-shaped member. When the center in the width direction of the frame 16 is defined as a boundary, one side serves as an approximately U-shaped downward flow receiving fin 12A and the other side serves as an approximately straight upward flow receiving fin 12B facing upwardly. The vertical fin 13 is also formed by a plate-shaped member. When the center in the height direction of the frame 16 is defined as a boundary, the upper side serves as an upper vertical fin 13A inclined to one side direction, and the other serves as a lower vertical fin 13B inclined to the other side direction.

Description

  The present invention relates to a wind direction guide unit disposed in an outdoor unit of an air conditioner and an outdoor unit of the air conditioner.

Conventionally, an outdoor unit of an air conditioner that exhausts air from the front is known. In this outdoor unit, it is necessary to adjust the installation direction so as to avoid exhausting to the position that becomes the passage, and it is necessary to make various adjustments regarding installation, such as securing a space on the exhaust side. It was. In view of this, an arrangement in which an air direction adjusting plate for changing the exhaust direction is arranged at the exhaust port of the outdoor unit has been proposed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-201542

  However, when an air direction adjusting plate or the like is provided in order to change the exhaust direction of the outdoor unit, the air flow adjusting plate has a large ventilation resistance, and there is a concern about a decrease in the air volume and a concomitant decrease in equipment efficiency.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to change the direction of exhaust gas in an outdoor unit of an air conditioner while suppressing a decrease in air volume and a decrease in equipment efficiency.

  In order to solve the above-mentioned problems, the present invention includes a propeller fan for exhaust, and exhaust is discharged from an exhaust outlet grill provided in the panel by the rotational action of the fan. In the outdoor unit of the air conditioner to which the unit is attached, the wind direction guide unit is a substantially rectangular frame, and includes a horizontal fin as a wind direction guide plate and a vertical fin as a partition plate. Is formed of a plate-like member, and is composed of a substantially U-shaped downward flow receiving fin on one side with respect to the center in the width direction of the frame, and an upper flow receiving fin obliquely upward on the other side. The upper vertical fin is formed of a member, and the upper side is inclined in one side with respect to the center in the height direction of the frame, and the lower vertical fin is inclined in the other side. Providing outdoor unit of the air conditioner with.

  According to this configuration, the direction of the exhaust can be efficiently changed by guiding the swirling flow blown from the propeller fan for exhaust smoothly in a predetermined direction while suppressing the ventilation resistance. Thereby, it can exhaust in arbitrary directions, without causing the fall of the air volume in the outdoor unit of an air conditioning apparatus, and the fall of apparatus efficiency.

  In the present invention, among the plurality of wind direction guide plates, the wind direction guide plate located in a region where the angle of attack with respect to the swirl flow is large reduces the ventilation resistance given to the swirl flow generated by the propeller fan, and smoothly in a predetermined direction. It is good also as a structure formed so that exhaust is possible.

  In this case, since the ventilation resistance in the wind direction guide plate located in the region where the angle of attack with respect to the swirling flow is large is suppressed, it is possible to effectively suppress the ventilation resistance related to the exhaust and increase the exhaust efficiency in the outdoor unit of the air conditioner. it can.

  Further, in the present invention, a partition plate that connects intermediate portions in the longitudinal direction of the plurality of wind direction guide plates is provided, and the partition plate reduces the ventilation resistance given to the swirling flow generated by the propeller fan and smoothly. It is good also as a structure formed so that exhausting in a predetermined direction is possible.

  In this case, since the plurality of wind direction guide plates are connected by the partition plate, the strength of the wind direction guide plate is increased to improve the durability, and the wind direction guide plate is sufficiently resistant to the pressure received from the exhaust and stable. The direction of exhaust can be changed. Further, since the partition plate itself is formed so that the ventilation resistance given to the swirling flow is suppressed and can be smoothly exhausted in a predetermined direction, the ventilation resistance related to the exhaust is suppressed to be smaller, and in the outdoor unit of the air conditioner Exhaust efficiency can be increased.

  According to the outdoor unit of the air conditioner of the present invention, it is possible to efficiently change the direction of exhaust by guiding the swirling flow blown out from the propeller fan for exhaust in a predetermined direction smoothly while suppressing the draft resistance. Therefore, it is possible to change the exhaust direction without causing a reduction in air volume or equipment efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view of an outdoor unit of an air conditioner according to an embodiment to which the present invention is applied, and FIG. 2 is a side view. 3 is a partially broken front view showing the configuration of the outdoor unit main body, FIG. 4 is an exploded perspective view showing the configuration of the exterior part of the outdoor unit main body, and FIG. 5 is housed in the outdoor unit main body 2. It is a disassembled perspective view which shows the structure of an apparatus.

  In the outdoor unit 1 according to the present embodiment, wind direction guide units 11 and 12 are attached to an outdoor unit main body 2. The outdoor unit main body 2 incorporates a refrigerant circuit including devices such as an outdoor heat exchanger, a compressor, an accumulator, and a receiver tank, and constitutes an air conditioner by being connected to an indoor unit (not shown).

  First, the configuration of the outdoor unit body 2 will be described with reference to FIGS.

  The exterior body 20 of the outdoor unit main body 2 includes a top plate 21, a front plate 22, a side plate 23, a bottom plate 24, a back plate 25, and an exhaust port panel 26 that constitutes the front surface of the outdoor unit main body 2 along with the front plate 22. The external shape is a substantially rectangular parallelepiped. The front plate 22 and the exhaust port panel 26 are provided with a handle 36 used when carrying the outdoor unit 1, and a similar handle (not shown) is also provided on the back side of the outdoor unit main body 2. A plurality of legs 37 are attached below the bottom plate 24 that constitutes the lower surface of the outdoor unit main body 2.

  The interior of the exterior body 20 is divided into two spaces by a partition plate 31, one of which contains an outdoor heat exchanger 32, and the other is a machine room 40. The machine room 40 accommodates a compressor 41, equipment that constitutes a refrigerant circuit such as a soundproof member 42, an accumulator 43, 44, a receiver tank 45, and the like, and an outdoor unit main body below the compressor 41. An electrical box 47 that houses a power transformer 48 and the like that supplies power to each part 2 is disposed. Further, as shown in the broken portion in FIG. 3, the machine room 40 is provided with a pipe connection part 38 for connecting another outdoor unit, the refrigerant circuit of the indoor unit, or the like to the refrigerant circuit in the exterior body 20.

  In addition, two propeller fans 5 that forcibly exhaust the air in the outdoor unit body 2 are disposed in the vicinity of the outdoor heat exchanger 32 of the outdoor unit body 2. These two propeller fans 5 are each driven by a fan motor 33 that rotates upon receiving power supply from a power transformer 48. When these two propeller fans 5 exhaust, heat exchange in the outdoor heat exchanger 32 is forcibly promoted, and further, heat generated by the compressor 41 and the power transformer 48 accommodated in the machine room 40 is generated. Then, it is discharged to the outside of the outdoor unit body 2.

  Two propeller fans 5 are arranged side by side, and two exhaust ports 27 are formed in the exhaust port panel 26 corresponding to each propeller fan 5. On the front surface of the outdoor unit main body 2, grills 28 and 29 that cover the two exhaust ports 27 are attached to the exhaust port panel 26 with screws or fitted. By these grills 28 and 29, the exhaust port 27 is completely covered, and the propeller fan 5 is protected from being exposed from the exhaust port 27.

  And the wind direction guide unit 11 is attached to the grills 28 and 29 lined up and down on the front surface of the outdoor unit main body 2 as shown in FIGS. These two wind direction guide units 11 guide the exhaust from the propeller fan 5 upward.

  FIG. 6 is a perspective view showing the configuration of the propeller fan 5, in which the arrow R indicates the rotation direction of the propeller fan 5, and the arrow W indicates the blowing direction. As shown in FIG. 6, the propeller fan 5 has a configuration in which three blades 52 are erected on a hub portion 51 having a rotation center, and the blade surfaces of the blades 52 are warped. When the propeller fan 5 rotates in the direction indicated by the arrow R, air is pushed out in the direction indicated by the arrow W by each blade 52 to form a swirling flow. The wind direction indicated by the arrow W in FIG. 6 is an arbitrary point on the blade surface of the blade 52, and the point forms an angle of 60 degrees with respect to the tangent of the locus (circle) drawn during rotation.

  Therefore, the exhaust of the propeller fan 5 is blown against the wind direction guide unit 11 while turning, and the turning angle of this turning flow is 60 degrees in the example of FIG. For this reason, when a wind direction guide having a configuration in which parallel flat plates are arranged as a wind direction guide plate, the direction of the wind direction guide plate does not coincide with the direction of the swirl flow, so the ventilation resistance is very large and the propeller fan 5 rotates. Receives resistance. For example, when the turning angle is 60 degrees, it is estimated that 25% of the energy given to the air by the propeller fan 5 is wasted.

  Therefore, the wind direction guide unit 11 provided in the outdoor unit 1 has a shape that reduces the ventilation resistance and smoothly guides the exhaust upward in accordance with the direction of the swirling flow by the propeller fan 5.

  Hereinafter, the configuration of the wind direction guide unit 11 will be described in detail.

  7 to 12 are diagrams showing the configuration of the wind direction guide unit 11, FIG. 7 is a perspective view, FIG. 8 is a front view, FIG. 9 is a right side view, FIG. 10 is a left side view, and FIG. FIG. 12 is a bottom view. For convenience of understanding, the propeller fan 5 is shown together with the wind direction guide unit 11 in FIGS.

  In the present embodiment, the case where the exhaust gas is guided upward by the wind direction guide unit 11 will be exemplified, and for convenience, the description will be made with the upper, lower, left, and right as a reference with reference to FIGS. Of course, by changing the installation direction of the wind direction guide unit 11, it is of course possible to set the exhaust direction of the outdoor unit 1 to be horizontal or downward. In this case, the vertical and horizontal directions in the following description are used as the wind direction guide. What is necessary is just to change according to the installation direction of the unit 11.

  As shown in FIG. 7, the wind direction guide unit 11 is provided with a horizontal fin 12 as a wind direction guide plate and a vertical fin 13 as a partition plate in a substantially rectangular frame 16 having three surfaces lacking the upper surface. Composed. In addition, two screw holes 17 are provided at each of the four corners of the frame 16, and the wind direction guide unit 11 is screwed to the front surface of the outdoor unit main body 2 through the screw holes 17. Further, the frame lower surface 16A of the frame 16 has a smooth slope that extends obliquely upward. This is to reduce the ventilation resistance when the exhaust gas guided upward by the wind direction guide unit 11 located below the outdoor unit 1 hits the frame lower surface 16A.

  The horizontal fins 12 are plate-like members that extend in the width direction of the frame 16 (left-right direction in FIG. 8), and the cross section is a curved surface that protrudes downward. The vertical fins 13 are plate-like members extending in the height direction of the frame 16 (up and down direction in FIG. 8), and are warped. The lateral fins 12 have a lower flow receiving fin 12A on the right side and an upper flow receiving fin 12B on the left side with the width direction center of the frame 16 as a boundary. The vertical fin 13 has an upper vertical fin 13A on the upper side and a lower vertical fin 13B on the lower side with the height direction of the frame 16 as a boundary.

  A plurality of lower flow receiving fins 12 </ b> A and upper flow receiving fins 12 </ b> B are arranged in parallel on the frame 16. In the present embodiment, the four downward flow receiving fins 12A and the upper flow receiving fins 12B are provided at equal intervals, but the number and the interval between them are arbitrary. Further, at the intersections of the upper vertical fin 13A and the lower vertical fin 13B with the lower flow receiving fin 12A and the upper flow receiving fin 12B, the upper vertical fin 13A, the lower vertical fin 13B, the lower flow receiving fin 12A and the upper flow fin, respectively. The receiving fin 12B is connected. Accordingly, the plurality of lower flow receiving fins 12A and the upper flow receiving fins 12B are connected to each other and supported at a predetermined interval.

  As shown in FIG. 8, the wind direction guide unit 11 is disposed such that the rotation center of the propeller fan 5 substantially overlaps the center in the frame 16. For this reason, when the propeller fan 5 rotates in the direction of the arrow R in the figure, a swirling flow about the center of the frame 16 is blown to the wind direction guide unit 11. This swirling flow blows in different directions with the height direction center line XX of the wind direction guide unit 11 as a boundary, and blows in different directions with the width direction center line YY as a boundary.

  That is, paying attention to the width direction of the wind direction guide unit 11, the swirl flow is blown downward on the right side of the width direction center line YY, and the swirl flow is blown upward on the left side. If attention is paid to the height direction of the wind direction guide unit 11, the swirl flow is blown rightward above the height direction center line XX, and the swirl flow is blown leftward below.

  The lower receiving fins 12A and the upper receiving fins 12B constituting the horizontal fins 12 and the upper vertical fins 13A and the lower vertical fins 13B constituting the vertical fins 13 correspond to the direction of the swirling flow, and provide ventilation to the swirling flow. It is formed so that the resistance can be reduced and the air can be smoothly exhausted in a predetermined direction.

  As shown in the right side view of FIG. 9, the lower receiving fin 12A is formed of a substantially V-shaped curved surface that protrudes downward. When the propeller fan 5 rotates in the direction of the arrow R, a downward airflow indicated by the arrow W is blown onto the downward receiving fin 12A. If the downward air flow is guided upward, the angle of attack is large and a large draft resistance is generated. However, since the downward flow receiving fin 12A has a downward slope on the side close to the propeller fan 5, the air flow indicated by the arrow W is provided. Is blown between the downward flow receiving fins 12A without resistance. Further, since the side away from the propeller fan 5 is an upward slope, the airflow blown between the lower flow receiving fins 12A is smoothly guided upward.

  Further, as shown in the left side view of FIG. 10, the upper receiving fin 12B is a plate-like member that is inclined and fixed to the frame 16 so as to face obliquely upward, and is slightly warped. The warping of the upper flow receiving fin 12B reduces the draft resistance and smoothly changes the direction of the exhaust gas. However, a certain effect can be expected without warping. When the propeller fan 5 rotates in the direction of the arrow R, an airflow blowing upward as indicated by the arrow W blows on the upper receiving fin 12B. This airflow is blown without resistance between the upper flow receiving fins 12B inclined in the same direction, and is smoothly guided upward.

  On the other hand, as shown in the top view of FIG. 11, the upper vertical fin 13 </ b> A has a shape in which two surfaces having different inclinations are connected. That is, the side close to the propeller fan 5 is a surface inclined rightward, and the side away from the propeller fan 5 is a surface substantially facing the front of the wind direction guide unit 11. When the propeller fan 5 rotates in the direction of the arrow R, as shown by the arrow W, an air current blows to the upper vertical fin 13A in the right direction in the figure. This airflow is blown without resistance toward the upper vertical fins 13 </ b> A inclined in the same direction, and is smoothly guided toward the front of the wind direction guide unit 11.

  As shown in the bottom view of FIG. 12, the lower vertical fin 13B has a shape formed by connecting two surfaces having different inclinations and is symmetrical with respect to the upper vertical fin 13A. When the propeller fan 5 rotates in the direction of the arrow R, the air current blows to the lower vertical fin 13B in the left direction in the figure as indicated by the arrow W. This airflow is blown without resistance toward the lower vertical fin 13B inclined in the same direction, and is smoothly guided toward the front of the wind direction guide unit 11.

  As described above, the wind direction guide unit 11 includes the lower flow receiving fins 12A and the upper flow receiving fins 12B with the center in the width direction as a boundary corresponding to the swirling flow discharged by the propeller fan 5. Similarly, the wind direction guide unit 11 includes an upper vertical fin 13A and a lower vertical fin 13B with the center in the height direction as a boundary. Accordingly, since the slope of the wind direction guide unit 11 on the side of the propeller fan 5 is lined with slopes that are substantially in the same direction as the swirling flow, the exhaust from the propeller fan 5 has a very low resistance in the wind direction guide unit 11. Infuse. Further, on the side away from the propeller fan 5, the lower receiving fin 12 </ b> A and the upper receiving fin 12 </ b> B are inclined in substantially the same direction, so that the swirling flow becomes an upward flow, and the wind direction guide unit 11 Exhausted. Similarly, since the upper vertical fin 13A and the lower vertical fin 13B face the front of the wind direction guide unit 11 on the side away from the propeller fan 5 of the wind direction guide unit 11, the swirling flow is a frontal flow. Exhausted.

  Accordingly, the wind direction guide unit 11 as a whole exhausts the swirl flow as a generally upward air flow.

  Thereby, the direction of the exhaust gas blown out from the outdoor unit main body 2 by the propeller fan 5 can be smoothly changed to a predetermined direction (upward in the present embodiment) while keeping the ventilation resistance extremely small. Therefore, the exhaust direction can be changed to an arbitrary direction without causing a reduction in the air volume of the propeller fan 5 in the outdoor unit 1, energy loss, reduction in equipment efficiency, or the like. Moreover, since the resistance relating to the rotation of the propeller fan 5 is weakened by reducing the ventilation resistance, an increase in the air volume can be expected, and the exhaust efficiency can be greatly increased.

  In particular, the region where the angle of attack of the propeller fan 5 with respect to the swirling flow is large, that is, the lower receiving fin 12A located on the right side of the widthwise center line YY (FIG. 8) has a slope inclined in substantially the same direction as the swirling flow. Therefore, the ventilation resistance is effectively suppressed, and the ventilation resistance related to the exhaust can be effectively suppressed.

  Further, since the plurality of lower flow receiving fins 12A and the upper flow receiving fins 12B are connected to each other by the upper vertical fins 13A and the lower vertical fins 13B, the strength of the lower flow receiving fins 12A and the upper flow receiving fins 12B is increased. The pressure applied by the exhaust of the propeller fan 5 can be sufficiently resisted, and durability can be improved and stable operation can be achieved. Since the upper vertical fins 13A and the lower vertical fins 13B themselves are formed so as to suppress the ventilation resistance given to the swirl flow and to be smoothly evacuated in a predetermined direction, the ventilation resistance related to the exhaust is suppressed to be smaller and the outdoor The exhaust efficiency in the unit 1 can be increased.

  Then, in the wind direction guide unit disposed on the propeller fan blowing side, the base end portions of the horizontal fins as the plurality of wind direction guide plates are exposed on the propeller fan side, and the base end portions of these horizontal fins are It consists of slopes inclined in different directions with the position of the center of rotation as the boundary. Thereby, ventilation resistance is suppressed very small. Moreover, the front-end | tip part of the horizontal fin as a wind direction guide plate is comprised by the surface which faced the substantially same direction on both sides of the rotation center of a propeller fan. For this reason, since the exhaust from the propeller fan is smoothly exhausted in a predetermined direction, it is possible to exhaust in any direction while suppressing the ventilation resistance.

  Furthermore, it has the vertical fin as a partition plate which connects the intermediate parts of the longitudinal direction of several horizontal fins, the base end part of this vertical fin is exposed to the propeller fan side, and the base end part of this vertical fin is a propeller fan It is configured as an inclined surface inclined in different directions with the position of the rotation center of. For this reason, since a plurality of horizontal fins are connected to each other and the strength is increased and the pressure due to the exhaust of the propeller fan can be sufficiently resisted, durability can be increased and a stable operation can be performed. Moreover, the draft resistance which produces the swirling flow from the propeller fan can be kept small. In addition, since the tip of the vertical fin faces almost the same direction on both sides of the rotation center of the propeller fan, the exhaust from the propeller fan is smoothly guided in a predetermined direction and exhausted in any direction while suppressing draft resistance. Can be made.

  The embodiment described above shows one embodiment of the present invention, and it is needless to say that the embodiment can be arbitrarily modified and applied within the scope of the present invention. For example, although one outdoor unit 1 has been described in the present embodiment, a plurality of outdoor units 1 may be connected to form one air conditioner, and a plurality of indoor units (not shown) may be connected. May be. Moreover, in the said embodiment, although the outdoor unit main body 2 demonstrated the structure provided with the two propeller fans 5 arranged up and down, this invention is not limited to this, The structure provided with more propeller fans 5 It is good. Further, for example, a plurality of propeller fans 5 may be arranged in a horizontal direction. In this case, the exhaust of the plurality of propeller fans 5 may be guided in the lateral direction by the wind direction guide unit 11. Furthermore, the configuration of the wind direction guide unit 11 described in the above embodiment is an example, and the number of the horizontal fins 12 and the vertical fins 13 and the degree of bending / warping, the lateral fins 12 with respect to the width of the side surface of the frame 16 and the lower surface 16A of the frame 16 are described. Of course, the width and the like of the outdoor unit 1 are arbitrary, and the detailed configuration of the other outdoor units 1 can be arbitrarily changed.

It is a front view of the outdoor unit which concerns on embodiment of this invention. It is a side view of an outdoor unit. It is a partially broken front view of an outdoor unit body. It is a disassembled perspective view which shows the structure of the exterior part of an outdoor unit main body. It is a disassembled perspective view which shows the structure of the apparatus accommodated in an outdoor unit main body. It is a perspective view of a propeller fan. It is a perspective view of a wind direction guide unit. It is a front view of a wind direction guide unit. It is a right view of a wind direction guide unit. It is a left view of a wind direction guide unit. It is a top view of a wind direction guide unit. It is a bottom view of a wind direction guide unit.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Outdoor unit main body 5 Propeller fan 11 Wind direction guide unit 12 Horizontal fin (wind direction guide plate)
12A Lower receiving fin 12B Upper receiving fin 13 Vertical fin (partition plate)
13A Upper vertical fin 13B Lower vertical fin 16 Frame 16A Lower surface 20 Exterior body 26 Exhaust port panel 27 Exhaust port 28, 29 Grill 32 Outdoor heat exchanger 33 Fan motor 40 Machine room 51 Hub part 52 Wings

Claims (3)

In the outdoor unit of the air conditioner in which the propeller fan for exhaust is built in and exhaust is discharged from the grill of the exhaust port provided in the panel by the rotational action of the fan. The wind direction guide unit is a substantially rectangular frame, and includes a horizontal fin as a wind direction guide plate and a vertical fin as a partition plate.
The lateral fin is formed of a plate-like member, and is composed of a substantially U-shaped downward flow receiving fin on one side with respect to the center in the width direction of the frame, and an upward flow receiving fin obliquely upward on the other side,
The vertical fin is also formed of a plate-like member, and is composed of an upper vertical fin whose upper side is inclined in one direction and a lower vertical fin whose lower side is inclined in the other direction from the center in the height direction of the frame. An outdoor unit of an air conditioner characterized by the above.   Of the plurality of wind direction guide plates, a wind direction guide plate located in a region where the angle of attack with respect to the swirling flow generated by the rotating action of the propeller fan is large reduces ventilation resistance given to the swirling flow generated by the propeller fan, and The outdoor unit for an air conditioner according to claim 1, wherein the outdoor unit is formed so as to be smoothly evacuated in a predetermined direction.   The plurality of partition plates are formed so as to reduce a ventilation resistance given to a swirling flow generated by a rotating action of the propeller fan and to be smoothly evacuated in a predetermined direction. The outdoor unit of the air conditioning apparatus described.