JP2018044681A - Heat exchange unit - Google Patents

Abstract

Provided is a heat exchange unit including a heat exchanger that is lightweight and compact and in which scattering of dew condensation water is suppressed. A heat exchange unit includes a first heat exchange unit and a second heat exchange unit. The first heat exchange section 21 has a plurality of first flat tubes 26 and a plurality of first heat transfer fins 25. The second heat exchange section 22 has a plurality of second flat tubes 28 and a plurality of second heat transfer fins 27. The second heat exchange section 22 extends from the end 21 a of the first heat exchange section 21 in a direction different from that of the first heat exchange section 21. Each of the plurality of first heat transfer fins 25 has a first main portion 25a located on the upper side, into which the first flat tube 26 is inserted, and a first communication portion 25b located on the lower side. Each of the plurality of second heat transfer fins 27 has a second main portion 27a located on the upper side, into which the second flat tube 28 is inserted, and a second communication portion 27b located on the lower side. [Selection diagram] FIG.

Description

  The present invention relates to a heat exchange unit.

  Conventionally, a plurality of heat transfer fins arranged in parallel to each other and a plurality of flat tubes inserted into the heat transfer fins, for example, heat described in Patent Document 1 (Japanese Patent Laid-Open No. 2013-221713) An exchanger is known. In the heat exchanger of Patent Document 1, the heat transfer fins communicate with each other on both sides of the flat tube so that the flat tube penetrates the heat transfer fin. As described above, in the heat exchanger in which the heat transfer fins communicate with each other on both sides of the flat tube, the condensed water can be flowed by using one of the communication portions of the heat transfer fins regardless of the inclination of the heat transfer fin.

  However, as described in Patent Document 1, in a heat exchanger in which a flat tube passes through a heat transfer fin and there are communication portions on both sides, it is difficult to manufacture the heat exchanger, and thus the manufacturing cost increases. End up. Moreover, a heat exchanger will enlarge.

  An object of the present invention is to provide a heat exchange unit including a heat exchanger with a simple configuration, lightweight and compact, in which scattering of condensed water is suppressed.

  A heat exchange unit according to a first aspect of the present invention includes a first heat exchange unit having a plurality of first flat tubes and a plurality of first heat transfer fins, and an end of the first heat exchange unit or the vicinity of the end. A second heat exchange part having a plurality of second flat tubes and a plurality of second heat transfer fins extending in a direction different from the first heat exchange part and extending in a direction in which the plurality of first flat pipes extend. A plurality of first heat transfer fins, each of which is located on the upper side and formed with a plurality of first notches into which a first flat tube is inserted, and a plurality of first notches A plurality of second heat transfer fins that are respectively located on the upper side and into which the second flat tube is inserted; The second communication portion located on the lower side opposite to the plurality of second opening ends of the plurality of second notches and the second main portion having the notches formed therein With the door.

  According to the heat exchange unit according to the first aspect of the present invention, the first communication part of the first heat transfer fin of the first heat exchange part is located on the lower side, and the second heat transfer fin of the second heat exchange part Since the second communication portion is also located on the lower side, both the first communication portion and the second communication portion can be used as a dew condensation water flow path.

  A heat exchange unit according to a second aspect of the present invention is the heat exchange unit according to the first aspect, arranged next to the first heat exchange unit and the second heat exchange unit, and the first heat exchange unit and the second heat exchange unit. The first heat exchanging unit further includes a blower fan that generates an air flow, and the first heat exchanging unit extends upward from the upper end of the second heat exchanging unit or near the upper end in a direction different from the second heat exchanging unit, The main part is located on the leeward side and the first communication part is located on the leeward side. The second heat exchange part is located on the leeward side and the second communication part is on the leeward side. It is what is arranged to be located.

  According to the heat exchange unit according to the second aspect of the present invention, in the first heat exchange part, the direction in which the condensed water is transmitted through the first communication part by gravity is the forward direction with respect to the direction of the air flow. It becomes easy to collect the dew condensation water generated in the first heat exchange part at the upper end part of the exchange part or in the vicinity thereof. In the second heat exchange section, the direction in which the condensed water is transmitted by gravity through the second flat tube is the forward direction with respect to the direction of the air flow, so the second communication section is located on the leeward side, so that the second main section It becomes easy to collect condensed water in the second communication part.

  The heat exchange unit according to a third aspect of the present invention is the heat exchange unit according to the first aspect, and is disposed beside the first heat exchange unit and the second heat exchange unit, and the first heat exchange unit and the second heat exchange unit. The first heat exchanging unit further includes a blower fan that generates an air flow, and the first heat exchanging unit extends upward from the upper end of the second heat exchanging unit or near the upper end in a direction different from the second heat exchanging unit, The main part is located on the leeward side and the first communicating part is located on the leeward side, and the second heat exchange part is located on the leeward side while the second main part is located on the leeward side. It is what is arranged to be located.

  According to the heat exchange unit according to the third aspect of the present invention, in the first heat exchange part, the direction in which the dew condensation water is transmitted through the first flat tube by gravity is the forward direction with respect to the direction of the airflow, so the first main part. As compared with the case where is placed on the leeward side, the dew condensation can be reduced. In the second heat exchanging part, since the leeward side of the second communication part is lowered, the direction in which the dew condensation water is transmitted through the second communication part by gravity is the forward direction with respect to the direction of the air flow. It becomes easy to move the condensed water collected to the lower end of the second communication portion.

  A heat exchange unit according to a fourth aspect of the present invention is the heat exchange unit according to any one of the first to third aspects, wherein the first heat exchange part extends obliquely upward and the second heat exchange part extends obliquely downward. Thus, the first heat exchange part and the second heat exchange part are connected to each other so as to have a wedge shape when viewed from the direction perpendicular to the surfaces of the first heat transfer fin and the second heat transfer fin. It is.

  According to the heat exchange unit according to the fourth aspect of the present invention, since the first heat exchange part extends obliquely upward and the second heat exchange part extends obliquely downward, the first flat tube and the second flat tube have the wind direction. Is changed in an oblique direction, and the first communication portion and the second communication portion extend in the oblique direction, and the first communication portion and the second communication portion can guide the condensed water in the oblique direction.

  A heat exchange unit according to a fifth aspect of the present invention is the heat exchange unit according to the first aspect, further comprising a blower fan that generates an air flow upward from below in the first heat exchange unit and the second heat exchange unit, The first heat exchanging portion and the second heat exchanging portion extend downward in opposite directions from the upper end portions that are close to or in contact with each other, and the first main portion and the second main portion are located on the lower leeward side. The first communication part and the second communication part are arranged so as to be located on the windward side.

  According to the heat exchange unit according to the fifth aspect of the present invention, the condensed water flows from the top to the bottom due to gravity, and from the first main part toward the first communication part and from the second main part toward the second communication part. Since the condensed water flows, it becomes easy to collect the condensed water in the first communication portion and the second communication portion. In addition, since water can be guided by the first communication portion and the second communication portion, it is possible to reduce the scattering of condensed water as compared with the case where the first main portion and the second main portion are positioned on the windward side below. Furthermore, by blowing air from below to the dew condensation water flowing through the first communication part and the second communication part, the dew condensation water easily flows to the lower end without dropping in the middle of the first communication part and the second communication part. .

  A heat exchange unit according to a sixth aspect of the present invention is the heat exchange unit according to the first aspect, further comprising a blower fan that generates an air flow from below to above in the first heat exchange unit and the second heat exchange unit, The first heat exchanging part and the second heat exchanging part extend upward in opposite directions from the lower end parts that are close to or in contact with each other, and the first main part and the second main part are located on the leeward side and the first communication part It arrange | positions so that a part and a 2nd communication part may be located in a windward side.

  According to the heat exchange unit according to the sixth aspect of the present invention, the condensed water flows from the top to the bottom due to gravity, and from the first main part toward the first communication part and from the second main part toward the second communication part. Since the condensed water flows with respect to the airflow, the condensed water is easily collected in the first communication portion and the second communication portion. In addition, since water can be guided by the first communication portion and the second communication portion, it is possible to reduce the scattering of condensed water as compared with the case where the first main portion and the second main portion are positioned on the windward side below. Furthermore, by blowing air from below to the dew condensation water flowing through the first communication part and the second communication part, the dew condensation water easily flows to the lower end without dropping in the middle of the first communication part and the second communication part. .

  A heat exchange unit according to a seventh aspect of the present invention is the heat exchange unit according to the first aspect, further comprising a blower fan that generates an air flow from the upper side to the lower side in the first heat exchange unit and the second heat exchange unit, The first heat exchanging part and the second heat exchanging part extend downward in opposite directions from upper ends that are close to or in contact with each other, and the first main part and the second main part are located on the windward side and are connected to the first side. It arrange | positions so that a part and a 2nd communication part may be located in a leeward side.

  According to the heat exchange unit according to the seventh aspect of the present invention, the dew condensation water flows from the first main part toward the first communication part and from the second main part toward the second communication part from the top to the bottom due to gravity. The direction becomes the forward direction with respect to the air current, and the condensed water can be quickly collected downward. In addition, since the condensed water is guided to the first communicating portion and the second communicating portion that communicate with each other below, the amount of scattered condensed water is reduced as compared with the case where the first main portion and the second main portion are located on the leeward side below. be able to.

  A heat exchanging unit according to an eighth aspect of the present invention is the heat exchanging unit according to the first aspect, further comprising a blower fan that generates an air flow from the upper side to the lower side in the first heat exchanging unit and the second heat exchanging unit, The first heat exchanging part and the second heat exchanging part extend upward in opposite directions from the lower end parts that are close to or in contact with each other, and the first main part and the second main part are located on the windward side and the first communication It arrange | positions so that a part and a 2nd communication part may be located in a leeward side.

  According to the heat exchange unit according to the eighth aspect of the present invention, the dew condensation water flows from the first main part toward the first communication part and from the second main part toward the second communication part due to gravity. The direction becomes the forward direction with respect to the air current, and the condensed water can be quickly collected downward. In addition, since the condensed water is guided to the first communicating portion and the second communicating portion that communicate with each other below, the amount of scattered condensed water is reduced as compared with the case where the first main portion and the second main portion are located on the leeward side below. be able to.

  The heat exchange unit according to the ninth aspect of the present invention is the heat exchange unit according to any one of the first to eighth aspects, wherein the airflow flowing into at least one of the first heat exchange part and the second heat exchange part is The front wind speed is 2 m / sec or less.

  According to the heat exchange unit according to the ninth aspect of the present invention, the front wind speed is 2 m / sec or less, thereby improving the drainage of the condensed water while suppressing the increase in ventilation resistance and the scattering of the condensed water. Heat exchange by the heat exchange unit can be performed as far as possible.

  In the heat exchange unit according to the first aspect of the present invention, the first heat transfer fin and the second heat transfer fin in which the first notch and the second notch into which the first flat tube and the second flat tube are inserted are used. With a simple configuration, light weight and compactness can be achieved, and the dew condensation water flows through the first communication part of the first heat exchange part and the second communication part of the second heat exchange part by gravity, so that the dew condensation water is prevented from scattering.

  In the heat exchange unit according to the second aspect of the present invention, the effect of suppressing the scattering of the dew condensation water in the second heat exchange part is enhanced, and the dew condensation water is quickly drained using the second communication part of the second heat exchange part. can do.

  In the heat exchange unit according to the third aspect of the present invention, the effect of suppressing the scattering of the dew condensation water in the first heat exchange part is enhanced, and the dew condensation water is quickly drained using the second communication part of the second heat exchange part. can do.

  In the heat exchange unit according to the fourth aspect of the present invention, scattering of condensed water in the horizontal direction is suppressed.

  In the heat exchange unit according to the fifth aspect of the present invention, the dew condensation water can be easily guided to the lower ends of the first communication portion and the second communication portion.

  In the heat exchange unit according to the sixth aspect of the present invention, the dew condensation water can be easily guided to the lower ends of the first communication portion and the second communication portion.

  In the heat exchange unit according to the seventh aspect of the present invention, the dew condensation water can be quickly guided to the lower ends of the first communication portion and the second communication portion.

  In the heat exchange unit according to the eighth aspect of the present invention, the dew condensation water can be promptly led to the lower ends of the first communication portion and the second communication portion.

  In the heat exchange unit according to the ninth aspect of the present invention, it is possible to improve the drainage of the condensed water while suppressing an increase in ventilation resistance and scattering of the condensed water.

The perspective view which shows the external appearance of the heat exchange unit which concerns on 1st Embodiment. The perspective view which shows the state which removed a part of casing of FIG. 1 and notched a part of heat exchanger. The side view which shows the heat exchange unit of the state of FIG. The expanded sectional view which expanded some cross sections of the heat exchanger. The typical sectional view showing the heat exchange unit concerning modification 1A. The typical sectional view showing the heat exchange unit concerning modification 1B. The typical sectional view showing the heat exchange unit concerning modification 1C. The typical expanded sectional view of the heat exchanger for explaining the effect of a 1st embodiment. The typical expanded sectional view of the other heat exchanger for explaining the effect of a 1st embodiment. The perspective view which shows the structure of the heat exchange unit which concerns on 2nd Embodiment. Sectional drawing which shows the structure of the heat exchange unit which concerns on 2nd Embodiment. The typical sectional view for explaining the heat exchange unit concerning modification 2A. The typical sectional view for explaining the heat exchange unit concerning modification 2B. A typical sectional view for explaining a heat exchange unit concerning modification 2C. A typical sectional view for explaining a heat exchange unit concerning modification 2D. The typical sectional view for explaining the heat exchange unit concerning modification 2E. The typical sectional view for explaining the heat exchange unit concerning modification 2F. The typical sectional view for explaining the heat exchange unit concerning modification 2G. The partially broken perspective view which fractured | ruptured partially in order to demonstrate the structure of the heat exchange unit which concerns on 3rd Embodiment. Sectional drawing which shows the structure of the heat exchanger which concerns on 3rd Embodiment, and its periphery. The perspective view which shows the external appearance of the heat exchange unit which concerns on 4th Embodiment. Sectional drawing of the heat exchange unit cut | disconnected by the II line | wire of FIG. (A) The schematic diagram which shows the state of drainage evaluation of the heat exchange part of this embodiment, (b) The schematic diagram which shows the state of drainage evaluation of the conventional heat exchange part. Sectional drawing of the heat exchange unit cut | disconnected by the II line | wire of FIG. 21 which shows the result of drainage evaluation. (A) The schematic diagram which shows the other state about the drainage property evaluation of the heat exchange part of this embodiment, (b) The schematic diagram which shows the other state about the drainage property evaluation of the conventional heat exchange part.

<First Embodiment>
(1) Configuration of Duct-Type Heat Exchange Unit FIG. 1 shows an appearance of a duct-type heat exchange unit according to the first embodiment of the present invention. FIG. 2 shows the inside of the heat exchange unit with a part of the casing of the heat exchange unit of FIG. 1 removed. In FIG. 2, in order to make the configuration of the heat exchanger easy to understand, the heat exchanger is partially cut away. Moreover, the state which looked at the heat exchange unit of the state of FIG. 2 from the side surface is shown by FIG. 1 to 3, the X direction corresponds to the front-rear direction of the heat exchange unit, the Y direction corresponds to the left-right direction, and the Z direction corresponds to the up-down direction.

  The duct-type heat exchange unit 10 includes a casing 11, a partition member 12, a heat exchanger 20, a blower fan 30, and a drain pan 40. A suction port 13 is formed in the front surface 11a of the casing 11, and an air outlet 14 is formed in the back surface 11b. A suction duct 15 is connected to the suction port 13, and an outlet duct 16 is connected to the outlet 14. The air blower chamber 18 is disposed behind the heat exchanger chamber 17 and the heat exchanger chamber 17 following the suction port 13, and the blower chamber 18 continues to the outlet 14. The heat exchanger chamber 17 and the blower chamber 18 are partitioned by the partition member 12.

  The heat exchanger 20 is installed in the heat exchanger chamber 17, and the blower fan 30 is installed in the blower chamber 18. The blower fan 30 generates an airflow AF that flows from the suction port 13 through the heat exchanger chamber 17 and the blower chamber 18 toward the blowout port 14. The airflow AF generated by the blower fan 30 is indicated by a two-dot chain line arrow. The airflow AF flows in the front-rear direction (X direction) while finely changing the direction in the vertical direction (Z direction) and the left-right direction (Y direction). The airflow AF generated by the blower fan 30 sequentially passes through the suction port 13, the heat exchanger 20, the blower fan 30, and the blower outlet 14. In the heat exchanger chamber 17, a drain pan 40 is disposed under the heat exchanger 20. The drain pan 40 receives the dew condensation water generated by the heat exchanger 20.

(2) Heat exchanger 20
The heat exchanger 20 includes a first heat exchange unit 21 and a second heat exchange unit 22. One end 21 a of the first heat exchange unit 21 and one end 22 a of the second heat exchange unit 22 are connected by a partition plate 23. The 1st heat exchange part 21 is extended in the direction different from the 2nd heat exchange part 22 from the edge part 22a of the 2nd heat exchange part 22 which contacted the edge part 21a. That is, the first heat exchanging portion 21 extends obliquely upward from the end portion 21a to the upstream side of the air flow AF, whereas the second heat exchanging portion 22 extends from the end portion 21a to the upstream side of the air flow AF. It extends obliquely downward. That is, when the heat exchanger 20 is viewed from the side, the first heat exchanging portion 21 and the second heat exchanging portion 22 have a wedge shape, and more specifically, the end portions 21a and 22a are rotated by rotating the V shape 90 degrees. The shape is arranged on the downstream side. At this time, the other end portions 21 b and 22 b arranged on the upstream side are separated from each other in the vertical direction (in the Z direction), and the end portion 21 b of the first heat exchange portion 21 is located near the upper surface 11 c of the casing 11. The end 22b of the second heat exchange unit 22 is disposed near the lower surface 11d of the casing 11.

  The first heat exchange unit 21 has a plurality of first heat transfer fins 25 and a plurality of first flat tubes 26. The second heat exchange unit 22 includes a plurality of second heat transfer fins 27 and a plurality of second flat tubes 28. Each first heat transfer fin 25 and each second heat transfer fin 27 are arranged in parallel to the XZ plane. The plurality of first heat transfer fins 25 are arranged in the left-right direction (Y direction). Similarly, the plurality of second heat transfer fins 27 are also arranged in the left-right direction. The airflow AF generated by the blower fan 30 passes between the first heat transfer fins 25 adjacent to each other or passes between the second heat transfer fins 27 adjacent to each other.

  Each first flat tube 26 extends in the left-right direction (Y direction). When each first flat tube 26 is combined with each first heat transfer fin 25, each first heat transfer fin 25 and each first flat tube 26 are arranged so as to be orthogonal to each other. Similarly, each second flat tube 28 also extends in the left-right direction (Y direction). Accordingly, the plurality of second flat tubes 28 extend along the Y direction in which the plurality of first flat tubes 26 extend. When each second flat tube 28 is combined with each second heat transfer fin 27, each second heat transfer fin 27 and each second flat tube 28 are arranged so as to be orthogonal to each other. The airflow AF generated by the blower fan 30 passes between the first flat tubes 26 adjacent to each other or passes between the second flat tubes 28 adjacent to each other.

  In FIG. 4, a part of the first heat exchange part 21 and the second heat exchange part 22 of the heat exchanger 20 is shown enlarged. The first heat transfer fin 25 is divided into a first main part 25a and a first communication part 25b. The first main portion 25 a is located above the first heat transfer fin 25. A plurality of first notches 25c into which the first flat tube 26 is inserted are formed in the first main portion 25a. In other words, the region where the first notch 25c is formed (the region extending in the longitudinal direction of the first heat transfer fin 25) is the first main portion 25a. The first communication portion 25 b is located below the first heat transfer fin 25. That is, the first communication portion 25b is located on the opposite side of the first heat transfer fin 25 from the first opening end 25d of the first notch 25c.

  Similarly, the second heat transfer fin 27 is divided into a second main portion 27a and a second communication portion 27b. The second main portion 27 a is located above the second heat transfer fins 27. A plurality of second notches 27c into which the second flat tube 28 is inserted are formed in the second main portion 27a. In other words, the region where the second notch 27c is formed (the region extending in the longitudinal direction of the second heat transfer fin 27) is the second main portion 27a. The second communication portion 27 b is located below the second heat transfer fin 27. That is, the second communication portion 27b is located on the opposite side to the second opening end 27d of the second notch 27c in the second heat transfer fin 27.

(3) Blower fan 30
For example, a centrifugal fan can be used as the blower fan 30. The blower chamber 18 in which the blower fan 30 is installed is located between the heat exchanger 20 and the blower outlet 14, and the air blown by the blower fan 30 from the heat exchanger 20 is pushed out from the blower outlet 14. The airflow AF flowing from the front to the rear, that is, from the end portions 21b and 22b of the heat exchanger 20 toward the end portions 21a and 22a is generated.

  The blower fan 30 is disposed beside the first heat exchange unit 21 and the second heat exchange unit 22. And the 1st communication part 25b of the 1st heat-transfer fin 25 is arrange | positioned in the windward side of the airflow AF generated by the ventilation fan 30, and the 1st main part 25a is arrange | positioned in the leeward side. Further, the second main portion 27a of the second heat transfer fin 27 is disposed on the windward side of the airflow AF, and the second communication portion 27b is disposed on the leeward side.

  The heat exchange unit 10 is configured such that the front wind speed of the airflow flowing into the heat exchanger 20 by the blower fan 30 can be adjusted to 2 m / sec or less. In other words, the heat exchange unit 10 is configured so that the surface average velocity of the airflow flowing vertically into the heat exchanger 20 can be adjusted to 2 m / sec or less. The heat exchange unit 10 may be adjusted by the blower fan 30 so that the front wind speed is 2 m / sec or less, for example, when cooling and the heat exchanger 20 satisfies the conditions for condensation. . During heating, the heat exchanger 20 does not cause condensation, so the heat exchange unit 10 may be configured so that the front wind speed can be adjusted to be greater than 2 m / sec. Moreover, in the location where water jump is difficult to occur, there may be a location where the front wind speed is locally about 4 m / sec. As a result of the deterioration of the drainage of the portion, if the ventilation resistance increases and the ventilation speed decreases, the condensed water in that portion is drained from the first communication portion 25b (water conveyance path) on the windward side.

  For example, as shown in FIGS. 23 (a) and 23 (b), the evaluation of drainability in the heat exchanger 20 is performed by performing the first heat exchange between the front side ventilation path 61 and the rear side ventilation path 62. This is performed by arranging the part 21 (or the second heat exchanging part 22) and the conventional heat exchanging part 121. Evaluation of drainage is performed, for example, by allowing humid air to flow into the inclined heat exchange section through the front-side ventilation path 61, circulating cold water at a predetermined temperature through the flat tube, and visually checking the drainage of the dew condensation water. Can do. Moreover, the ventilation resistance of the heat exchange unit can be measured by measuring the pressure difference between the front side ventilation path 61 and the rear side ventilation path 62 by the ventilation resistance measuring device 70, for example.

  In the airflow AF shown in FIGS. 23A and 23B, the surface average speed passing through the vertical surface 63 of the front-side ventilation path 61 is variously changed. The airflow resistance is measured by the airflow resistance measuring device 70 with respect to the changing surface average speed. In FIG. 24, the first heat exchanging part 21 (or the second heat exchanging part 22) and the conventional heat exchanging part 121 at an angle of 30 degrees (acute angle) with respect to the airflow AF (the blowing direction of the front side air passage 61). The relationship between the front wind speed Va and the ventilation resistance ΔP is shown. The front wind speed Va1 m / sec shown in FIG. 24 is the limit wind speed at which the occurrence of water jumping (spattering of condensed water) does not occur in the first heat exchange unit 21 (or the second heat exchange unit 22). The front wind speed Va2 m / sec shown in 24 is a limit wind speed at which water splash does not occur in the conventional heat exchange unit 121.

  When the front wind speed is a low wind speed of 2 m / sec or less, the first heat exchange unit 21 (or the second heat exchange unit 22) is better than the conventional heat exchange unit 121 for draining condensed water. Moreover, the conventional heat exchange part 121 has larger ventilation resistance ΔP than the first heat exchange part 21 (or the second heat exchange part 22). Accordingly, when the first heat exchange unit 21 (or the second heat exchange unit 22) is arranged at an angle of 30 degrees with respect to the airflow AF, the heat exchange unit 10 adjusts the front wind speed to 2 m / sec or less. As shown in FIG. 24, it is possible to reduce the ventilation resistance and improve the drainage of the condensed water compared to the conventional heat exchange unit 121. However, when the front wind speed is higher than 2 m / sec, the dew condensation water is discharged from the conventional heat exchange unit 121 rather than the first heat exchange unit 21 (or the second heat exchange unit 22). good. The first heat exchange unit 21 (or the second heat exchange unit 22) has a larger ventilation resistance ΔP than the conventional heat exchange unit 121. Further, the water jump limit wind speed is higher in the conventional heat exchange unit 121 than in the first heat exchange unit 21 (or the second heat exchange unit 22).

  FIG. 24 shows the evaluation of drainage of the heat exchanger 20 performed by arranging the heat exchange part at an angle of 30 degrees with respect to the airflow AF. The angle ranges from 20 degrees to 85 degrees (acute angle). However, if the front wind speed is set to 2 m / sec or less, the ventilation resistance of the first heat exchange unit 21 (or the second heat exchange unit 22) is approximately the same as the ventilation resistance of the conventional heat exchange unit 121. The drainage of the first heat exchange unit 21 (or the second heat exchange unit 22) can be made better than that of the conventional heat exchange unit 121 while suppressing water splashing.

  Further, in FIG. 25A, the first heat exchange unit 21 (or the second heat exchange unit 22) is formed at an angle of 150 degrees with respect to the airflow AF between the front side ventilation path 61 and the rear side ventilation path 62. ) Is shown, and FIG. 25 (b) shows a conventional angle between the front-side air passage 61 and the rear-side air passage 62 at an angle of 150 degrees (obtuse angle) with respect to the airflow AF. The example which has arrange | positioned the heat exchange part 121 is shown. When the airflow AF is laterally blown (when the blower fan 30 is disposed beside the first heat exchange unit 21 and the second heat exchange unit 22), the angle formed by the laterally blown airflow AF and the heat exchange unit is 150 degrees ( (Obtuse angle), in any wind speed region, the installation in which the first communication portion 25b (or the second communication portion 27b) faces downward (see FIG. 25A) has the communication portion facing upward (see FIG. 25A). 25 (b)), the ventilation resistance can be made smaller, and the drainage can be made better than the conventional heat exchanging part 121. The same applies to the case where the angle formed between the side blowing airflow AF and the heat exchange unit is changed in the range of 95 degrees to 160 degrees (obtuse angle).

  Moreover, what was demonstrated using Fig.23 (a) and FIG.25 (a) is when the airflow is a horizontal blowing (the ventilation fan 30 is arrange | positioned beside the 1st heat exchange part 21 and the 2nd heat exchange part 22). However, even when the airflow blows up and down (when the blower fan 30 generates the airflow from the lower side to the upper side or from the upper side to the lower side in the first heat exchange unit 21 and the second heat exchange unit 22). The same thing can be said. In the narrow space sandwiched between the first heat transfer fins 25 (or the second heat transfer fins 27), the air flow AF passes through the portion having the smallest blowing resistance, and as a result, the first heat exchange unit 21 (or This is because in the second heat exchanging part 22), air flows in a direction along the width direction of the first flat tube 26 (or the second flat tube 28). Here, the width direction of the first flat tube 26 (or the second flat tube 28) appears when the first flat tube 26 (or the second flat tube 28) is cut perpendicular to the direction in which the refrigerant flows. This is a direction in which the length of the cross-sectional shape is long, in other words, a direction in which a plurality of refrigerant flow paths in the first flat tube 26 (or the second flat tube 28) are arranged.

(4) Modification (4-1) Modification 1A
In the said 1st Embodiment, the ventilation fan 30 is arrange | positioned at the edge part 21a of the 1st heat exchange part 21 and the edge part 22a of the 2nd heat exchange part 22 which mutually contact, and the ventilation fan 30 is the heat exchanger 20. As shown in FIG. 5, the blower fan 30 is disposed on the upstream side of the heat exchanger 20, and the end portion 21 b of the first heat exchange unit 21 that is separated from each other, as shown in FIG. 5. And the end 22b of the second heat exchanging part 22 can also be arranged on the side of the blower fan 30.

  Also when arrange | positioning as FIG. 5 shows, the 1st heat exchange part 21 is with the 2nd heat exchange part 22 toward the upper direction from the edge part 22a which is the upper end part of the 2nd heat exchange part 22. It extends in different directions. That is, the first heat exchanging part 21 extends from the end 21a of the first heat exchanging part 21 toward the upper side of the windward side, whereas the second heat exchanging part 22 is the second heat exchanging part 22. Extends from the end 22a of the windshield toward the lower side of the windward side.

  In the case of the arrangement as shown in FIG. 5, as in the first embodiment, the first main portion 25a of the first heat transfer fin 25 of the first heat exchanging portion 21 is located on the leeward side, and the first communicating portion 25b. Is located on the windward side. Moreover, the 2nd main part 27a of the 2nd heat-transfer fin 27 of the 2nd heat exchange part 22 is located in the windward side, and the 2nd communication part 27b is located in the leeward side.

(4-2) Modification 1B
In the first embodiment and the modified example 1A, the first heat exchanging portion 21a and the end portion 22a of the second heat exchanging portion 22 that are close to each other are located on the leeward side and separated from each other. The case where the end portion 21b of 21 and the end portion 22b of the second heat exchange unit 22 are on the windward side has been described as an example. Moreover, in the said 1st Embodiment, the ventilation fan 30 is arrange | positioned at the edge part 21a of the 1st heat exchange part 21 and the edge part 22a of the 2nd heat exchange part 22 which adjoin mutually.

  However, the direction of the heat exchanger 20 disposed in the heat exchange unit 10 is not limited to the example of the first embodiment. For example, as shown in FIG. 6, the end 21 a of the first heat exchange unit 21 and the end 22 a of the second heat exchange unit 22 that are close to each other are arranged on the leeward side and are separated from each other. The blower fan 30 may be disposed on the end 21 b of the heat exchange unit 21 and the end 22 b of the second heat exchange unit 22.

  In the heat exchanger 20 arranged as shown in FIG. 6, the first heat exchange unit 21 is different from the second heat exchange unit 22 from the end 22 a that is the upper end of the second heat exchange unit 22 toward the top. Extending in the direction. That is, the first heat exchange unit 21 extends from the end 21a of the first heat exchange unit 21 toward the leeward side, whereas the second heat exchange unit 22 is the second heat exchange unit 22. From the end portion 22a of the rim, it extends downward on the leeward side.

  The first main portion 25a of the first heat transfer fin 25 of the first heat exchanging portion 21 arranged as shown in FIG. 6 is located on the leeward side, and the first communication portion 25b is located on the leeward side. Moreover, the 2nd main part 27a of the 2nd heat-transfer fin 27 of the 2nd heat exchange part 22 is located in the leeward side, and the 2nd communication part 27b is located in the leeward side.

(4-3) Modification 1C
In the modified example 1B, the blower fan 30 is disposed on the side of the end 21b of the first heat exchange unit 21 and the end 22b of the second heat exchange unit 22 that are separated from each other. As shown in FIG. 7, the blower fan 30 is disposed on the upstream side of the heat exchanger 20, and the end of the first heat exchange unit 21 that is close to each other, as shown in FIG. 7. 21a and the end 22a of the second heat exchanging part 22 may be arranged on the side of the blower fan 30.

  Also when arrange | positioning as FIG. 7 shows, the 1st heat exchange part 21 is with the 2nd heat exchange part 22 toward the upper direction from the edge part 22a which is the upper end part of the 2nd heat exchange part 22. It extends in different directions. That is, the first heat exchange unit 21 extends from the end 21a of the first heat exchange unit 21 toward the leeward side, whereas the second heat exchange unit 22 is the second heat exchange unit 22. From the end portion 22a of the rim, it extends downward on the leeward side.

  Also in the case of the arrangement as shown in FIG. 7, the first main portion 25a of the first heat transfer fin 25 of the first heat exchanging portion 21 is located on the windward side and the first communication portion 25b is leeward in the same manner as in the modification 1B. Located on the side. Moreover, the 2nd main part 27a of the 2nd heat-transfer fin 27 of the 2nd heat exchange part 22 is located in the leeward side, and the 2nd communication part 27b is located in the leeward side.

(4-4) Modification 1D
In the first embodiment, Modification 1A to Modification 1C, the case where the end 21a of the first heat exchange unit 21 and the end 22a of the second heat exchange unit 22 are in contact with each other has been described. The end 21a of the exchange unit 21 and the end 22a of the second heat exchange unit 22 are close to each other, but may be configured not to contact each other. In these cases, the first heat exchange unit 21 is arranged so as to extend upward from the vicinity of the end 22a which is the upper end of the second heat exchange unit 22.

(5) Features (5-1)
In the heat exchanger 20 of the heat exchange unit 10 according to the first embodiment and the modifications 1A to 1D described above, the first communication portion 25b of the first heat transfer fin 25 of the first heat exchange portion 21 is on the lower side. Since the second communication part 27b of the second heat transfer fin 27 of the second heat exchange part 22 is also located on the lower side, the first communication part 25b is also second as shown in FIG. The communication portion 27 b can also be a flow path for the condensed water 100. In the heat exchanger 20 shown in FIG. 8, the partition plate 23 that contacts the first communication portion 25 b and the second communication portion 27 b also serves as a flow path for the condensed water 100. Since the dew condensation water 100 flows through the first communication part 25b of the first heat exchange part 21 and the second communication part 27b of the second heat exchange part 22 by the gravity shown by the arrow g in FIG. Is prevented. In the heat exchanger 20 of the first embodiment and the modifications 1A to 1D described above, the first notch 25c and the second notch 27c into which the first flat tube 26 and the second flat tube 28 are inserted are formed. By using the first heat transfer fins 25 and the second heat transfer fins 27, the heat exchange unit 10 can be reduced in weight and size.

  On the other hand, as shown in FIG. 9, in the second heat exchange unit 22, when the second main portion 27a is disposed on the lower side and the second communication portion 27b is disposed on the upper side, In the second main portion 27a, the second flat tube 28 hinders the flow of the dew condensation water 100. For this reason, the condensed water 100 is accumulated along the second heat transfer fins 27 above the second flat tube 28. Since the condensed water 100 collected in this way is easily blown off by the air flow AF, the condensed water 100 is easily scattered.

(5-2)
In the heat exchanger 20 according to the first embodiment and the modified example 1A shown in FIGS. 3 and 5, in the first heat exchange unit 21, the direction in which the condensed water 100 is transmitted through the first communication unit 25b by gravity is an air flow. The direction is forward with respect to the AF direction. Therefore, it becomes easy to collect the dew condensation water 100 generated in the first heat exchange unit 21 at or near the upper end 22a of the second heat exchange unit 22. Further, in the second heat exchange section 22, the direction in which the condensed water 100 is transmitted by gravity through the second flat tube 28 is the forward direction with respect to the direction of the airflow AF, and the second communication section 27b is located on the leeward side. It becomes easy to collect condensed water from the second main part 27a to the second communication part 27b. As a result, it is possible to enhance the effect of suppressing the scattering of the dew condensation water 100 at the second heat exchange unit 22 and drain the dew condensation water 100 quickly using the second communication unit 27b of the second heat exchange unit 22.

(5-3)
In the heat exchanger 20 according to Modification 1B and Modification 1C shown in FIGS. 6 and 7, in the first heat exchange unit 21, the direction in which the condensed water 100 is transmitted by gravity through the first flat tube 26 is airflow AF. Therefore, it is possible to reduce the scattering of the dew condensation water 100 as compared with the case where the first main portion 25a is positioned on the leeward side. Further, in the second heat exchanging part 22, since the leeward side of the second communication part 27b is lowered, the direction in which the condensed water 100 is transmitted by gravity through the second communication part 27b is forward with respect to the direction of the airflow AF. It becomes easy to move the condensed water 100 collected in the second communication part 27b to the lower end of the second communication part 27b. As a result, it is possible to enhance the effect of suppressing scattering of the dew condensation water 100 in the first heat exchange unit 21 and drain the dew condensation water 100 quickly using the second communication part 27b of the second heat exchange unit 22.

(5-4)
In the heat exchanger 20 according to the first embodiment and the modifications 1A to 1C described above, the first heat exchange section 21 extends obliquely upward and the second heat exchange section 22 extends obliquely downward, thereby When viewed from the direction perpendicular to the surfaces of the first heat transfer fin 25 and the second heat transfer fin 27, the first heat exchange unit 21 and the second heat exchange unit 22 are connected to each other so as to exhibit a wedge shape. . Therefore, the direction of the wind is changed to the oblique direction in the first flat tube 26 and the second flat tube 28, and the first communication portion 25b and the second communication portion 27b extend in the oblique direction so that the first communication portion 25b and the second communication portion are connected. Since the part 27b can guide the dew condensation water 100 in an oblique direction, scattering of the dew condensation water 100 in the horizontal direction is suppressed as compared with the case where the part 27b is guided in the vertical direction.

(5-5)
As shown in FIG. 24, the heat exchange unit 10 adjusts the front wind speed to 2 m / sec or less, thereby suppressing the increase in ventilation resistance in the first heat exchange unit 21 as shown in FIG. Heat exchange can be performed as long as drainage can be improved. In the heat exchange unit 10 adjusted in this way, an increase in ventilation resistance can be suppressed and drainage of condensed water can be improved.

Second Embodiment
(6) Configuration of Duct Type Heat Exchange Unit In the heat exchange unit 10 of the first embodiment, the heat exchanger 20 and the blower fan 30 are arranged side by side. However, as in the heat exchange unit 10A of the second embodiment shown in FIGS. 10 and 11, the heat exchanger 20 and the blower fan 30 can be arranged vertically. A heat exchange unit 10A shown in FIGS. 10 and 11 includes a casing 11, a partition member 12, a heat exchanger 20, a blower fan 30, and a drain pan 40A. In order to facilitate understanding of the positional relationship among the first heat transfer fins 25, the first flat tubes 26, the second heat transfer fins 27, and the second flat tubes 28 of the heat exchanger 20, FIG. The cross section of the heat exchanger 20 cut | disconnected along XZ plane is shown.

  The heat exchange unit 10A can be placed vertically as shown in FIG. 10, and the heat exchanger 20 and the blower fan 30 can be arranged vertically (in the Z direction). As in the exchange unit 10, the heat exchanger 20 and the blower fan 30 can be arranged side by side in the front and back (in the X direction). As described above, the drain pan 40 </ b> A of the heat exchange unit 10 </ b> A includes the first drain pan 41 and the second drain pan 42 in order to enable both vertical placement and horizontal placement. As shown in FIG. 11, when the heat exchange unit 10 </ b> A is placed vertically, the dew condensation water generated in the heat exchanger 20 is received by the second drain pan 42. When it is in the horizontal position, the first drain pan 41 receives the condensed water generated in the heat exchanger 20. Therefore, when placed horizontally, the first drain pan 41 is placed under the heat exchanger 20.

  In the vertically placed state, the suction port 13 is formed on the lower surface 11 d of the casing 11, and the air outlet 14 is formed on the upper surface 11 c of the casing 11. The second drain pan 42 disposed on the suction port 13 is disposed around the suction port 13 so as not to block the suction port 13. A suction duct 15 is connected below the suction port 13, and an outlet duct 16 is connected above the outlet 14. The blower chamber 18 is disposed above the heat exchanger chamber 17 and the heat exchanger chamber 17 following the suction port 13, and the blower chamber 18 continues to the outlet 14. The heat exchanger chamber 17 and the blower chamber 18 are partitioned by the partition member 12. The heat exchanger 20 is installed in the heat exchanger chamber 17, and the blower fan 30 is installed in the blower chamber 18. The blower fan 30 generates an airflow that flows from the suction port 13 toward the blowout port 14 via the heat exchanger chamber 17 and the blower chamber 18.

(7) Heat exchanger 20
The heat exchanger 20 of the heat exchange unit 10A of the second embodiment includes a first heat exchange unit 21 and a second heat exchange unit 22 in the same manner as the heat exchanger 20 of the heat exchange unit 10 of the first embodiment. The first heat exchange section 21 has a plurality of first heat transfer fins 25 and a plurality of first flat tubes 26, and the second heat exchange section 22 has a plurality of second heat transfer fins 27 and a plurality of second flat tubes. 28. One end 21 a of the first heat exchange unit 21 and one end 22 a of the second heat exchange unit 22 are connected by a partition plate 23.

  The 1st heat exchange part 21 is extended in the direction different from the 2nd heat exchange part 22 from the edge part 22a of the 2nd heat exchange part 22 which contacted the edge part 21a. That is, the first heat exchanging portion 21 shown in FIG. 11 extends from the end portion 21a toward the lower right side of the upstream side of the airflow AF, whereas the second heat exchanging portion 22 has an end portion. It extends from 21a toward the lower left of the upstream side of the airflow AF. That is, when the heat exchanger 20 is viewed from the side, the first heat exchanging portion 21 and the second heat exchanging portion 22 have a Λ shape (inverted V shape). At this time, the other end portions 21 b and 22 b arranged on the upstream side are separated from each other in the left-right direction (in the X direction), and the end portion 21 b of the first heat exchange portion 21 is in the vicinity of the right side surface 11 e of the casing 11. The end 22b of the second heat exchange part 22 is arranged in the vicinity of the left side surface 11f of the casing 11.

  Each first heat transfer fin 25 and each second heat transfer fin 27 are arranged in parallel to the XZ plane. The plurality of first heat transfer fins 25 and the plurality of second heat transfer fins 27 are arranged in the left-right direction (Y direction). The airflow AF generated by the blower fan 30 passes between the first heat transfer fins 25 adjacent to each other or passes between the second heat transfer fins 27 adjacent to each other.

  Each first flat tube 26 and each second flat tube 28 extend in the left-right direction (Y direction). When each first flat tube 26 is combined with each first heat transfer fin 25, each first heat transfer fin 25 and each first flat tube 26 are arranged so as to be orthogonal to each other. When each second flat tube 28 is combined with each second heat transfer fin 27, each second heat transfer fin 27 and each second flat tube 28 are arranged so as to be orthogonal to each other. The airflow AF generated by the blower fan 30 passes between the first flat tubes 26 adjacent to each other or passes between the second flat tubes 28 adjacent to each other.

  The first main part 25a and the second main part 27a are located above the first heat transfer fins 25 and the second heat transfer fins 27, and the first communication part 25b and the second communication part 27b are the first heat transfer fins. 25 and the second heat transfer fin 27.

(8) Blower fan 30
The blower chamber 18 in which the blower fan 30 is installed is located between the heat exchanger 20 and the blower outlet 14, and the air blown by the blower fan 30 from the heat exchanger 20 is pushed out from the blower outlet 14. The airflow AF flowing from the bottom to the top, that is, from the end portions 21b and 22b of the heat exchanger 20 toward the end portions 21a and 22a is generated.

  The blower fan 30 is disposed on the first heat exchange unit 21 and the second heat exchange unit 22. And the 1st communication part 25b of the 1st heat-transfer fin 25 and the 2nd communication part 27b of the 2nd heat-transfer fin 27 are arranged on the windward side of the air current AF generated by the blower fan 30, and the first main part 25a and The second main portion 27a is disposed on the leeward side.

(9) Modification (9-1) Modification 2A
In the said 2nd Embodiment, the ventilation fan 30 is arrange | positioned at the edge part 21a of the 1st heat exchange part 21 and the edge part 22a of the 2nd heat exchange part 22 which mutually contact, and the ventilation fan 30 is the heat exchanger 20. As shown in FIG. 12, the blower fan 30 is disposed on the upstream side of the heat exchanger 20, and the end portion 21 b of the first heat exchange unit 21 that is separated from each other, as shown in FIG. 12. And the end 22b of the second heat exchanging part 22 can also be arranged on the side of the blower fan 30.

  Also when arrange | positioning as FIG. 12 shows, the 1st heat exchange part 21 is the 2nd heat exchange part 22 toward the lower right from the edge part 22a which is the upper end part of the 2nd heat exchange part 22. Extend in different directions. That is, the first heat exchanging part 21 extends from the end 21a of the first heat exchanging part 21 toward the lower right on the windward side, whereas the second heat exchanging part 22 is the second heat exchanging part. 22 extends from the end 22a toward the lower left on the windward side.

  In the case of the arrangement as shown in FIG. 12, as in the second embodiment, the first main portion 25a of the first heat transfer fin 25 of the first heat exchanging portion 21 is located on the leeward side, and the first communicating portion 25b. Is located on the windward side. Moreover, the 2nd main part 27a of the 2nd heat-transfer fin 27 of the 2nd heat exchange part 22 is located in the leeward side, and the 2nd communication part 27b is located in the leeward side.

(9-2) Modifications 2B and 2C
In the second embodiment and the modification 2A, the first heat exchanging portion 21a and the end 22a of the second heat exchanging portion 22 that are in contact with each other are disposed below and separated from each other. The end 21b of 21 and the end 22b of the second heat exchange unit 22 may be arranged upward. In that case, it is modification 2B that the ventilation fan 30 is arrange | positioned above the heat exchanger 20 (refer FIG. 13), and the ventilation fan 30 is arrange | positioned below the heat exchanger 20. FIG. Is Modification 2C (see FIG. 14).

  When arranged as shown in FIGS. 13 and 14, the first heat exchange unit 21 performs the second heat exchange from the end 22 a, which is the upper end of the second heat exchange unit 22, toward the upper right. It extends in a direction different from the portion 22. That is, the first heat exchanging part 21 extends from the end 21a of the first heat exchanging part 21 toward the upper right on the leeward side, whereas the second heat exchanging part 22 is the second heat exchanging part. 22 extends from the end 22a toward the upper left on the leeward side.

  When arranged as in FIGS. 13 and 14, the first main portion 25 a of the first heat transfer fin 25 of the first heat exchange portion 21 and the second of the second heat transfer fin 27 of the second heat exchange portion 22 are arranged. The main portion 27a is located on the leeward side, and the first communication portion 25b and the second communication portion 27b are located on the leeward side.

(9-3) Modifications 2D, 2E, 2F, 2G
In the second embodiment and the modified examples 2A to 2C, the airflow AF is blown upward from the bottom, but conversely, the airflow AF flowing from the top to the bottom may be generated. The heat exchange unit 10A (see FIG. 15) of Modification 2D has the same positional relationship between the heat exchanger 20 and the blower fan 30 as the heat exchange unit 10A of the second embodiment shown in FIG. Is the only change. The heat exchange unit 10A (see FIG. 16) of the modification 2E has the same positional relationship between the heat exchanger 20 and the blower fan 30 as the heat exchange unit 10A of the modification 2A shown in FIG. Is reversed. The heat exchange unit 10A (see FIG. 17) of the modified example 2F has the same positional relationship between the heat exchanger 20 and the blower fan 30 as the heat exchange unit 10A of the modified example 2B shown in FIG. Is reversed. The heat exchange unit 10A (see FIG. 18) of the modification 2G has the same positional relationship between the heat exchanger 20 and the blower fan 30 as the heat exchange unit 10A of the modification 2C shown in FIG. Is reversed.

  15, 16, 17, and 18, the first main portion 25 a of the first heat transfer fin 25 of the first heat exchange portion 21 and the second heat transfer of the second heat exchange portion 22 are arranged. The second main portion 27a of the heat fin 27 is located on the leeward side, and the first communication portion 25b and the second communication portion 27b are located on the leeward side.

(9-4) Modification 2H
In the second embodiment, Modification 2A to Modification 2G, the case where the end 21a of the first heat exchange unit 21 and the end 22a of the second heat exchange unit 22 are in contact with each other has been described. The end 21a of the exchange unit 21 and the end 22a of the second heat exchange unit 22 are close to each other, but may be configured not to contact each other.

(10) Features (10-1)
In the heat exchanger 20 of the heat exchange unit 10A according to the above-described second embodiment and Modifications 2A to 2G, the first communication part 25b of the first heat transfer fin 25 of the first heat exchange part 21 is located below. Since the second communication part 27b of the second heat transfer fin 27 of the second heat exchange part 22 is also located on the lower side, both the first communication part 25b and the second communication part 27b flow of the condensed water 100. It can be a road. Condensed water flows through the first communicating portion 25b of the first heat exchanging portion 21 and the second communicating portion 27b of the second heat exchanging portion 22 due to gravity, so that the condensed water is prevented from scattering. Further, in the heat exchanger 20 of the first embodiment and the modifications 1A to 1D described above, the first notch 25c and the second notch 27c into which the first flat tube 26 and the second flat tube 28 are inserted are formed. By using the first heat transfer fins 25 and the second heat transfer fins 27, the heat exchange unit 10A can be reduced in weight and size without complicating the configuration.

(10-2)
In the heat exchanger 20 of the heat exchange unit 10A according to the second embodiment shown in FIG. 11 and the modified example 2A shown in FIG. 12, the dew condensation water flows from the top to the bottom due to gravity, and the upper first Condensed water flows from the main portion 25a toward the lower first communication portion 25b and from the upper second main portion 27a toward the lower second communication portion 27b. Therefore, it becomes easy to collect condensed water in the first communication part 25b and the second communication part 27b. Further, water can be guided by the first communication part 25b and the second communication part 27b, and conversely, the amount of scattered water is reduced compared to the case where the first main part 25a and the second main part 27a are positioned on the windward side below. Can do. Furthermore, air is blown from below to the dew condensation water flowing through the first communication part 25b and the second communication part 27b, so that the dew condensation water is pushed up by the air flow AF, and the dew condensation water is pushed to the first communication part 25b and the second communication part. It becomes easy to flow to the lower end without dropping in the middle of the portion 27b. Thus, it becomes easy to guide dew condensation water to the end parts 21b and 22b which are lower ends of the first communication part 25b and the second communication part 27b, and the dew condensation water guided by the first communication part 25b and the second communication part 27b is The second drain pan 42 on the outer periphery of the heat exchanger 20 can be collected.

(10-3)
In the heat exchanger 20 of the heat exchanging unit 10A according to the modified example 2B shown in FIG. 13 and the modified example 2C shown in FIG. Condensed water flows from the portion 25a toward the lower first communication portion 25b and from the upper second main portion 27a toward the lower second communication portion 27b. Therefore, it becomes easy to collect condensed water in the first communication part 25b and the second communication part 27b. Further, water can be guided by the first communication part 25b and the second communication part 27b, and conversely, the amount of scattered water is reduced compared to the case where the first main part 25a and the second main part 27a are positioned on the windward side below. Can do. Furthermore, air is blown from below to the dew condensation water flowing through the first communication part 25b and the second communication part 27b, so that the dew condensation water is pushed up by the air flow AF, and the dew condensation water is pushed to the first communication part 25b and the second communication part. It becomes easy to flow to the lower end without dropping in the middle of the portion 27b. Thus, it becomes easy to guide dew condensation water to the end parts 21a and 22a which are the lower ends of the first communication part 25b and the second communication part 27b, and the dew condensation water guided by the first communication part 25b and the second communication part 27b is It can be collected by a drain pan (not shown) near the center of the heat exchanger 20.

(10-4)
In the heat exchanger 20 of the heat exchange unit 10A according to the modification 2D illustrated in FIG. 15 and the modification 2E illustrated in FIG. 16, the first heat exchange unit 21 and the second heat are performed by the blower fan 30. An air flow AF from the upper side to the lower side is generated in the exchange unit 22. The first heat exchange unit 21 and the second heat exchange unit 22 extend downward in opposite directions from end portions 22a and 22a that are upper end portions that are close to or in contact with each other. The first main portion 25a and the second main portion 27a are disposed on the leeward side, and the first communication portion 25b and the second communication portion 27b are disposed on the leeward side. Therefore, the direction in which condensed water flows from the first main part 25a toward the first communication part 25b and from the second main part 27a toward the second communication part 27b from the top to the bottom due to gravity is forward with respect to the airflow AF. become. As a result, the dew condensation water can be quickly collected downward, and the dew condensation water can be quickly led to the lower ends of the first communication part and the second communication part. Further, the dew condensation water is guided to the first communication part 25b and the second communication part 27b which communicate with the lower part, and the dew condensation water is compared with the case where the first main part 25a and the second main part 27a are positioned on the lower leeward side. Spattering can be reduced.

(10-5)
In the heat exchanger 20 of the heat exchange unit 10A according to Modification 2F shown in FIG. 16 and Modification 2G shown in FIG. 17, the first heat exchange unit 21 and the second heat are transmitted by the blower fan 30. An air flow AF from the upper side to the lower side is generated in the exchange unit 22. The first heat exchange unit 21 and the second heat exchange unit 22 extend upward in opposite directions from end portions 22a and 22a, which are lower end portions that are close to or in contact with each other. The first main portion 25a and the second main portion 27a are disposed on the leeward side, and the first communication portion 25b and the second communication portion 27b are disposed on the leeward side. Therefore, the direction in which condensed water flows from the first main part 25a toward the first communication part 25b and from the second main part 27a toward the second communication part 27b from the top to the bottom due to gravity is forward with respect to the airflow AF. become. As a result, the dew condensation water can be quickly collected downward, and the dew condensation water can be quickly led to the lower ends of the first communication part and the second communication part. Further, the dew condensation water is guided to the first communication part 25b and the second communication part 27b which communicate with the lower part, and the dew condensation water is compared with the case where the first main part 25a and the second main part 27a are positioned on the lower leeward side. Spattering can be reduced.

<Third Embodiment>
(11) Configuration of Wall-Mounted Heat Exchange Unit FIG. 19 shows the configuration of the wall-mounted heat exchange unit. The wall-mounted heat exchange unit 10B includes a casing 11, a heat exchanger 20B, a blower fan 30, and a drain pan 40B. A suction port 13 is formed in the upper part of the casing 11, and an air outlet 14 is formed in the lower part of the casing 11. A horizontal blade 14a and a vertical blade 14b for adjusting the direction of the air flow to be blown out are attached to the air outlet 14.

  An air filter 19 is installed downstream of the suction port 13 so as to cover the upper part of the heat exchanger 20B. The blower fan 30 is configured by, for example, a cross flow fan, and is disposed near the center of the casing 11. A heat exchanger 20 </ b> B is disposed between the air filter 19 and the blower fan 30. The blower fan 30 generates an airflow AF that flows from the suction port 13 through the air filter 19 and the heat exchanger 20B in order toward the blowout port 14 (see FIG. 20).

(12) Heat exchanger 20B
FIG. 20 shows a cross section of the heat exchanger 20B. In the heat exchange unit 10 of the first embodiment and the heat exchange unit 10A of the second embodiment, the heat exchanger 20 is configured by two blocks of a first heat exchange unit 21 and a second heat exchange unit 22. However, like the heat exchange unit 10B according to the third embodiment shown in FIG. 20, the heat exchanger 20B may be configured by three blocks.

  The heat exchanger 20B includes a front side upper heat exchange unit 51, a front side lower heat exchange unit 52, and a back side heat exchange unit 53. For example, the front side upper heat exchange part 51 is regarded as the first heat exchange part 21, the front side lower heat exchange part 52 is regarded as the second heat exchange part 22, and the rear side heat exchange part 53 is regarded as the second heat exchange part 22. It can be considered.

  If the front side upper heat exchange part 51 is regarded as the first heat exchange part 21 and the front side lower heat exchange part 52 is regarded as the second heat exchange part 22, the front side upper heat exchange part 51 and the front side of the heat exchanger 20B It can be seen that the configuration of the lower heat exchange unit 52 is similar to the configuration of the first heat exchange unit 21 and the second heat exchange unit 22 of the heat exchanger 20 of Modification 1B shown in FIG.

  Further, if the front side upper heat exchanging part 51 is regarded as the first heat exchanging part 21 and the rear side heat exchanging part 53 is regarded as the second heat exchanging part 22, the front side upper heat exchanging part 51 and the rear side of the heat exchanger 20B are considered. The configuration of the portion of the side heat exchanging portion 53 is depicted with the left and right interchanged, but the first heat exchanging portion 21 and the second heat exchanging portion 22 of the heat exchanging unit 10A of the modified example 2E shown in FIG. Similar to configuration.

  Therefore, the actions and effects of the front side upper heat exchange part 51 and the front side lower heat exchange part 52 of the heat exchanger 20B are the same as those of the first heat exchange part of the heat exchanger 20 of the modification 1B shown in FIG. Since it becomes similar to 21 and the 2nd heat exchange part 22, detailed description is abbreviate | omitted. Further, the actions and effects of the front side upper heat exchange part 51 and the rear side heat exchange part 53 of the heat exchanger 20B are the same as those of the first heat exchange part 21 and the first heat exchange part 21A of the heat exchange unit 10A of the modified example 2E shown in FIG. 2 Since it becomes similar to the heat exchange part 22, detailed description is abbreviate | omitted.

(13) Modification (13-1) Modification 3A
In the said 1st Embodiment, 2nd Embodiment, 3rd Embodiment, and those modifications, the heat exchanger 20 which consists of two blocks of the 1st heat exchange part 21 and the 2nd heat exchange part 22, and front side upper part Although the heat exchanger 20B including the three blocks of the heat exchanging part 51, the front side lower heat exchanging part 52, and the rear side heat exchanging part 53 is shown and described, the present invention is not limited to these. It can also be applied to heat exchangers with more than three blocks.

(13-2) Modification 3B
In the third embodiment, the case where the end of the front side upper heat exchange unit 51 and the end of the front side lower heat exchange unit 52 are in contact with each other is described. The ends of the front side lower heat exchange part 52 are close to each other, but may be configured not to contact each other. Moreover, although the case where the edge part of the front side upper heat exchange part 51 and the edge part of the back side heat exchange part 53 are contacting was demonstrated, the edge part of the front side upper heat exchange part 51 and the back side heat exchange part are demonstrated. The ends of 53 are close to each other, but may be configured not to contact each other.

<Fourth embodiment>
(14) Configuration of Ceiling-Installation Type Heat Exchange Unit FIG. 21 shows the appearance of the ceiling-mount type heat exchange unit, and FIG. 22 schematically shows a cross section of the heat exchange unit cut along line II in FIG. Has been shown. The ceiling-mounted heat exchange unit 10 </ b> C includes a casing 11, a heat exchanger 20 </ b> C, a blower fan 30, and a drain pan 40. A suction port 13 is formed in front of the lower part of the casing 11, and an air outlet 14 is formed in the lower part of the lower part. The casing 11 is fitted into an opening of the ceiling CE, for example. The blower fan 30 is configured by, for example, a cross flow fan, and is disposed near the center of the casing 11. The blower fan 30 generates an airflow AF that flows from the suction port 13 through the heat exchanger 20 </ b> C toward the blowout port 14.

  The heat exchanger 20C of the heat exchange unit 10C of the fourth embodiment is different from the heat exchanger 20 (see FIG. 6) of the heat exchange unit 10 of the modification 1A in that the first heat exchange unit 21 and the second heat The angle formed by the exchange unit 22. In the heat exchanger 20 of the heat exchange unit 10 of Modification 1A, the angle α formed by the first heat exchange unit 21 and the second heat exchange unit 22 is an acute angle. On the other hand, in the heat exchanger 20C of the heat exchange unit 10C of the fourth embodiment, the angle β formed by the first heat exchange unit 21 and the second heat exchange unit 22 is an obtuse angle. Thus, the second heat exchanging part 22 extending in the direction different from the first heat exchanging part 21 from the end of the first heat exchanging part 21 or in the vicinity of the end is an angle β formed with the first heat exchanging part 21. The arrangement may be an obtuse angle. In the heat exchanger 20 shown in FIG. 22, the first communication part 25b and the second communication part 27b serve as a dew condensation water flow path, and the second communication part 27b is lower than the first communication part 25b. Therefore, the partition plate 23 that comes into contact with the first communication portion 25b and the second communication portion 27b also serves as a flow path for the condensed water.

(15) Modification (15-1) Modification 4A
In the fourth embodiment, the heat exchanger 20 </ b> C including one row of the first heat exchange unit 21 and one row of the second heat exchange unit 22 has been described. However, the first heat exchange unit 21 and the second heat exchange unit 22 are described. May be in two or more rows. Moreover, although 1st Embodiment, 2nd Embodiment, 3rd Embodiment, and those modifications demonstrated the case where the 1st heat exchange part 21 and the 2nd heat exchange part 22 were respectively 2 rows, these are Each may be in one row, or may be in three or more rows.

(15-2) Modification 4B
In the fourth embodiment, the case where the end 21a of the first heat exchange unit 21 and the end 22a of the second heat exchange unit 22 are in contact with each other is described. The end portions 22a of the second heat exchange unit 22 are close to each other, but may be configured not to contact each other.

10, 10A, 10B, 10C Heat exchange unit 20, 20B, 20C Heat exchanger 21 First heat exchange part 22 Second heat exchange part 25 First heat transfer fin 25a First main part 25b First communication part 25c First cut Notch 26 1st flat tube 27 2nd heat transfer fin 27a 2nd main part 27b 2nd communication part 27c 2nd notch 28 2nd flat tube

JP 2013-221713 A

Claims (9)

A first heat exchange section (21) having a plurality of first flat tubes (26) and a plurality of first heat transfer fins (25);
A plurality of second flat tubes extending in a direction different from the first heat exchange portion from an end portion of the first heat exchange portion or in the vicinity of the end portions and extending in a direction in which the plurality of first flat tubes extend ( 28) and a second heat exchange section (22) having a plurality of second heat transfer fins (27),
The plurality of first heat transfer fins are respectively located on the upper side, the first main portion (25a) formed with the plurality of first notches (25c) into which the first flat tube is inserted, and the plurality of the first heat transfer fins A first communicating portion (25b) located on the lower side opposite to the plurality of first opening ends of the first notch,
The plurality of second heat transfer fins are respectively located on the upper side, the second main portion (27a) formed with the plurality of second notches (27c) into which the second flat tubes are inserted, and the plurality of the second heat transfer fins A heat exchange unit having a second communication portion (27b) located on the lower side opposite to the plurality of second opening ends of the second notch. A blower fan (30) disposed beside the first heat exchange unit and the second heat exchange unit and generating an air flow in the first heat exchange unit and the second heat exchange unit;
The first heat exchanging portion extends upward from the upper end portion of the second heat exchanging portion or near the upper end portion in a different direction from the second heat exchanging portion, and the first main portion is on the leeward side. Is located so that the first communication part is located on the windward side,
The second heat exchange part is arranged such that the second main part is located on the leeward side and the second communication part is located on the leeward side.
The heat exchange unit according to claim 1. A blower fan (30) disposed beside the first heat exchange unit and the second heat exchange unit and generating an air flow in the first heat exchange unit and the second heat exchange unit;
The first heat exchanging portion extends upward from the upper end portion of the second heat exchanging portion or near the upper end portion in a different direction from the second heat exchanging portion, and the first main portion is on the windward side. Is located so that the first communication part is located on the leeward side,
The second heat exchange part is arranged such that the second main part is located on the leeward side and the second communication part is located on the leeward side.
The heat exchange unit according to claim 1. When the first heat exchange part extends obliquely upward and the second heat exchange part extends obliquely downward, the first heat exchange part extends obliquely downward when viewed from a direction perpendicular to the surfaces of the first heat transfer fin and the second heat transfer fin. The first heat exchange part and the second heat exchange part are connected to each other so as to exhibit a wedge shape,
The heat exchange unit according to any one of claims 1 to 3. An air blower fan (30) for generating an air flow directed from below to above in the first heat exchange unit and the second heat exchange unit;
The first heat exchanging part and the second heat exchanging part extend downward in opposite directions from upper ends that are close to or in contact with each other, and the first main part and the second main part are located on the leeward side. And the first communication part and the second communication part are arranged so as to be located on the windward side,
The heat exchange unit according to claim 1. An air blower fan (30) for generating an air flow directed from below to above in the first heat exchange unit and the second heat exchange unit;
The first heat exchanging part and the second heat exchanging part extend upward in opposite directions from lower end parts approaching or in contact with each other, and the first main part and the second main part are located on the leeward side. And the first communication part and the second communication part are arranged so as to be located on the windward side,
The heat exchange unit according to claim 1. A fan (30) for generating an air flow from the top to the bottom in the first heat exchange section and the second heat exchange section;
The first heat exchange part and the second heat exchange part extend downward in opposite directions from upper ends that are close to or in contact with each other, and the first main part and the second main part are located on the windward side. And the first communication part and the second communication part are arranged on the leeward side,
The heat exchange unit according to claim 1. A fan (30) for generating an air flow from the top to the bottom in the first heat exchange section and the second heat exchange section;
The first heat exchanging part and the second heat exchanging part extend upward in opposite directions from lower end parts approaching or in contact with each other, and the first main part and the second main part are located on the windward side. And the first communication part and the second communication part are arranged on the leeward side,
The heat exchange unit according to claim 1. The front wind speed of the airflow flowing into at least one of the first heat exchange unit and the second heat exchange unit is 2 m / sec or less.
The heat exchange unit according to any one of claims 1 to 8.

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