WO2018142681A1 - Unité intérieure pour climatiseur et climatiseur pourvu de celle-ci - Google Patents

Unité intérieure pour climatiseur et climatiseur pourvu de celle-ci Download PDF

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Publication number
WO2018142681A1
WO2018142681A1 PCT/JP2017/037348 JP2017037348W WO2018142681A1 WO 2018142681 A1 WO2018142681 A1 WO 2018142681A1 JP 2017037348 W JP2017037348 W JP 2017037348W WO 2018142681 A1 WO2018142681 A1 WO 2018142681A1
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Prior art keywords
heat exchanger
air conditioner
flat
angle
indoor unit
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Application number
PCT/JP2017/037348
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English (en)
Japanese (ja)
Inventor
匠弥 平田
高藤　亮一
Original Assignee
日立ジョンソンコントロールズ空調株式会社
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Publication of WO2018142681A1 publication Critical patent/WO2018142681A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements

Definitions

  • the present invention relates to an indoor unit of an air conditioner and an air conditioner including the same.
  • Patent Document 1 in addition to the main heat exchanger, a sub heat exchanger having a shape different from that of the main heat exchanger is disposed, and the air heat pipe of the sub heat exchanger has a step pitch shorter than that of the main heat exchanger. A harmonic machine is described.
  • This invention solves the said conventional subject, and provides the indoor unit of the air conditioner which can perform heat exchange with high efficiency, and an air conditioner provided with the same.
  • the present invention provides a heat exchanger having a plurality of fins and a plurality of flat heat transfer tubes having a flat cross-sectional shape penetrating the plurality of fins, and air exchanged in the heat exchanger outside the casing
  • the plurality of flat heat transfer tubes are arranged in a plurality of rows side by side in the longitudinal direction of the fin, and are arranged on the windward flat tube arranged on the air introduction side and on the blower side. And the angle of the leeward flat tube and the angle of the leeward flat tube are at least partially different from each other.
  • Drawing 1 is a lineblock diagram showing the refrigerant circuit of the air harmony machine concerning a 1st embodiment.
  • an air conditioner 100 includes an outdoor unit 1 installed outside (non-air-conditioned space) on the heat source side, and an indoor unit 2 (air conditioner) installed indoors (air-conditioned space) on the use side.
  • the outdoor unit 1 and the indoor unit 2 are connected by the refrigerant pipes 3 and 3.
  • the outdoor unit 1 includes a compressor 4, a four-way valve 5, an outdoor heat exchanger 6, an outdoor fan 7, and an expansion valve 9.
  • the outdoor fan 7 is usually a propeller fan.
  • the indoor unit 2 includes an indoor heat exchanger 8 (8A, 8B, 8C, 8D, 8E) and a blower 10 including a cross-flow fan.
  • the refrigerant in the gas state compressed by the compressor 4 flows to the indoor heat exchanger 8 through the four-way valve 5 and exchanges heat with the indoor air by the air flow generated by the blower 10 so that the refrigerant is gas. It condenses from the state and changes to a liquid state.
  • the refrigerant in the liquid state flows to the outdoor heat exchanger 6 through the expansion valve 9, absorbs the heat of the outdoor air by the air flow generated by the outdoor fan 7, and performs heat exchange, so that the refrigerant is out of the liquid state. It evaporates into a gas state and flows to the compressor 4.
  • switching the four-way valve 5 reverses the direction in which the refrigerant flows as compared to the heating operation.
  • the refrigerant in the gas state compressed by the compressor 4 flows into the outdoor heat exchanger 6 through the four-way valve 5, releases the heat to the outdoor air by the air flow generated by the outdoor fan 7, and performs heat exchange. It condenses and changes to a liquid state.
  • the refrigerant in the liquid state flows to the indoor heat exchanger 8 through the expansion valve 9, absorbs heat from the indoor air with the air flow generated by the blower 10, and evaporates to become a gas state and flows to the compressor 4. .
  • the air conditioner 100 including the indoor unit 2 of the present embodiment is equipped with both the heating operation mode and the cooling operation mode, the one equipped only with the cooling operation mode, the heating operation mode and the cooling operation mode.
  • a dehumidifying operation mode may be installed.
  • FIG. 2 is a cross-sectional view showing the air conditioner according to the first embodiment.
  • the indoor unit 2 includes an indoor heat exchanger 8 ⁇ / b> A and a blower 10.
  • the indoor unit 2 includes a housing 11 molded into a horizontally long box shape with a synthetic resin, and houses the indoor heat exchanger 8A and the blower 10.
  • the blower 10 is configured by, for example, a once-through fan, and includes a plurality of fan blades 10a and an annular support plate 10b.
  • the fan blades 10a are arranged on the support plate 10b at equal intervals in the circumferential direction. ing.
  • the blower 10 has a substantially cylindrical shape, and extends along the indoor heat exchanger 8A (in the direction perpendicular to the plane of FIG. 2).
  • the blower 10 has one end in the axial direction supported rotatably on the housing 11 side, and the other end in the axial direction is connected to a motor (not shown).
  • the housing 11 includes air suction ports 11a and 11b that suck indoor air into the upper surface and the front surface, and an air outlet 11c that blows out air whose temperature and humidity are harmonized by heat exchange on the lower surface.
  • Filters 12a and 12b for purifying indoor air and taking it into the housing 11 are attached to the air suction ports 11a and 11b.
  • a left and right wind direction plate (not shown) for deflecting the left and right direction of the air flow and an up and down wind direction plate 13 for deflecting the air flow in the vertical direction are attached to the air outlet 11c.
  • the housing 11 includes a back casing 14 and a front casing 15.
  • a front panel 16 is rotatably attached to the front surface of the housing 11 so as to open and close the air suction port 11b by a driving force of a motor (not shown).
  • the back casing 14 is located on the back side of the blower 10, is formed continuously with the air outlet 11 c, and has a curved surface 14 a as an air flow path wall surface.
  • the curved surface 14 a is disposed so that the concave surface faces the front, and is curved so as to gradually approach the blower 10 from the edge of the air outlet 11 c.
  • the back casing 14 has a back nose portion 14b (also referred to as a rear guider) protruding between the blower 10 and a rear heat exchanger 23 described later.
  • the surface 14b1 on the blower 10 side of the back nose portion 14b extends so as to be a smooth continuous surface without a step difference from the curved surface 14a.
  • the front end of the back nose portion 14 b extends to the extent that it is located at the approximate center in the longitudinal direction of the rear heat exchanger 23.
  • the surface 14b2 on the opposite side to the blower 10 of the back nose portion 14b is formed substantially parallel to the rear heat exchanger 23.
  • the curved surface 14a and the back nose portion 14b of the back casing 14 extend along the axial direction (perpendicular to the paper surface) of the blower 10 so as to face from one end to the other end of the blower 10. Yes.
  • the back casing 14 has a channel wall surface 14c extending upward in the vertical direction behind the back nose portion 14b.
  • the back casing 14 is formed with a concave portion 14d into which a part (about the lower half) of the rear heat exchanger 23 is inserted between the back nose portion 14b and the channel wall surface 14c.
  • the front casing 15 is positioned substantially in front of the blower 10 and has a wall surface 15a extending toward the blower 10 continuously to the air outlet 11c in the vicinity below the front lower heat exchanger 22.
  • a front nose portion 15b also referred to as a stabilizer
  • the front nose portion 15b extends from the one end of the blower 10 to the other end along the axial direction (perpendicular to the paper surface) of the blower 10.
  • the indoor heat exchanger 8A is disposed on the upstream side of the blower 10 between the blower 10 and the air suction ports 11a and 11b.
  • the indoor heat exchanger 8A includes a front upper heat exchanger 21A located on the front side from the approximate center in the front-rear direction of the housing 11, and a front lower heat exchanger 22 located on the lower side of the front upper heat exchanger 21A.
  • the rear heat exchanger 23 is located on the rear side from the approximate center in the front-rear direction of the housing 11.
  • the front upper heat exchanger 21A and the rear heat exchanger 23 are combined above the blower 10 and arranged in an inverted V shape in a side view. Further, the front upper heat exchanger 21A and the front lower heat exchanger 22 are combined in front of the blower 10 and configured in a boomerang shape (in a square shape) in a side view.
  • the front upper heat exchanger 21A includes, for example, fins 31 (plural fins) configured by arranging a plurality of aluminum or aluminum alloy thin plates in the thickness direction, and aluminum having a flat cross-sectional shape that penetrates the fins 31. And a flat tube group 32 (a plurality of flat heat transfer tubes) formed of an aluminum alloy or the like.
  • fins 31 plural fins
  • aluminum having a flat cross-sectional shape that penetrates the fins 31.
  • a flat tube group 32 a plurality of flat heat transfer tubes formed of an aluminum alloy or the like.
  • the fin 31 has an elongated shape from the upper end 31a toward the lower end 31b in a side view from the direction of the rotation axis (rotation center O) of the blower 10.
  • the front end 31c and the rear end 31d of the fin 31 are inclined forward from the upper end 31a to the lower end 31b, and the front end 31c and the rear end 31d are parallel to each other.
  • the upper end 31a and the lower end 31b of the fin 31 extend in the horizontal direction, and the upper end 31a and the lower end 31b are parallel to each other.
  • the flat tube group 32 is configured in two rows (a plurality of rows) from the outside of the indoor heat exchanger 8A toward the blower 10 (in the air flow direction). That is, the flat tube group 32 has an upwind flat tube 32A disposed on the air introduction side (air introduction side) and a leeward flat tube 32B disposed on the blower 10 side.
  • the windward flat tube 32 ⁇ / b> A is configured by a plurality of flat heat transfer tubes 32 a arranged along the longitudinal direction s ⁇ b> 1 of the fins 31.
  • the leeward side flat tube 32 ⁇ / b> B is configured by a plurality of flat heat transfer tubes 32 b and 32 c arranged along the longitudinal direction s ⁇ b> 1 of the fin 31.
  • the flat heat transfer tube 32c is located on the upper end side in the direction in which the flat heat transfer tubes 32b and 32c are arranged.
  • the flat heat transfer tube 32a of the windward flat tube 32A and the flat heat transfer tubes 32b and 32c of the leeward flat tube 32B are respectively opposed to each other between one end and the other end of a flat portion (straight portion) and a flat portion (straight portion). And a bending portion that connects the two.
  • the flat heat transfer tubes 32a, 32b, and 32c are partitioned into a plurality of refrigerant flow paths by a plurality of partition walls that extend from the inner wall surface of one flat portion toward the inner wall surface of the other flat portion.
  • the flat heat transfer tubes 32 a are located outside the front upper heat exchanger 21 ⁇ / b> A and are arranged along the longitudinal direction s ⁇ b> 1 of the fins 31. Moreover, the space
  • the flat heat transfer tubes 32 b are located on the blower 10 side of the front upper heat exchanger 21 ⁇ / b> A and are arranged side by side along the longitudinal direction s ⁇ b> 1 of the fins 31. Moreover, the space
  • the flat heat transfer tube 32c is different from the flat heat transfer tube 32a in the direction of the major axis direction x2.
  • the angle of the flat heat transfer tube 32a of the windward flat tube 32A in the front upper heat exchanger 21A is different from the angle of the flat heat transfer tube 32c of the leeward flat tube 32B.
  • the angle ⁇ 10 of the flat heat transfer tube 32a of the windward flat tube 32A is larger than the angle ⁇ 20 of the flat heat transfer tube 32c of the leeward flat tube 32B. Is set.
  • the angle ⁇ 10 means an angle formed by the gravity direction G and the longitudinal direction x1 of the flat heat transfer tube 32a.
  • the angle ⁇ 20 means an angle formed by the gravity direction G and the longitudinal direction x2 of the flat heat transfer tube 32c. Specifically, the angle ⁇ 10 of the windward flat tube 32A is set to 45 degrees or more, and the angle ⁇ 20 of the flat heat transfer tube 32c of the leeward flat tube 32B is set to less than 45 degrees.
  • the direction of the flat heat transfer tube 32c (the direction of the long axis direction x2) is substantially parallel to the flow direction of the wind introduced from above the front upper heat exchanger 21A (the upper end 31a of the fin 31) (see arrow A1). It arrange
  • the air flow direction can pass through the front upper heat exchanger 21A without bending significantly.
  • the flat heat transfer tubes 32a, 32b, and 32c are inserted into flat holes formed in the fins 31 and joined to the fins 31 by brazing. Further, the flat heat transfer tubes 32a, 32b, and 32c may be mechanically expanded from the inside and the fins 31 may be caulked to fix the flat heat transfer tubes 32a, 32b, and 32c and the fins 31.
  • the fin 31 may have a U-shaped cutout at the front end 31c or the rear end 31d in the longitudinal direction s1, and the flat heat transfer tubes 32a, 32b, 32c may be inserted and joined by brazing.
  • the front lower heat exchanger 22 includes, for example, fins 33 and flat tube groups 34 made of the same material as the front upper heat exchanger 21A.
  • the fin 33 has an elongated shape from the upper end 33a toward the lower end 33b in a side view from the direction of the rotation axis (rotation center O) of the blower 10.
  • the front end 33c and the rear end 33d of the fin 33 are inclined rearward from the upper end 33a toward the lower end 33b, and the front end 33c and the rear end 33d are parallel to each other.
  • the upper end 33a and the lower end 33b of the fin 33 extend in the horizontal direction, and the upper end 33a and the lower end 33b are parallel to each other.
  • the lower end 31b of the fin 31 and the upper end 33a of the fin 33 are combined so as to be in linear contact with each other.
  • the flat tube group 34 is configured in two rows (a plurality of rows) by a plurality of flat heat transfer tubes 34a and 34b from the outside of the indoor heat exchanger 8A toward the blower 10 (toward the air flow direction). Yes. That is, the flat tube group 34 has an upwind flat tube 34A disposed on the air introduction side (air introduction side) and a leeward flat tube 34B disposed on the blower 10 side.
  • the windward flat tube 34 ⁇ / b> A includes a plurality of flat heat transfer tubes 34 a arranged along the longitudinal direction s ⁇ b> 2 of the fin 31.
  • the leeward side flat tube 34 ⁇ / b> B is configured by a plurality of flat heat transfer tubes 34 b disposed along the longitudinal direction s ⁇ b> 2 of the fin 31.
  • the flat heat transfer tubes 34a, 34b are configured in the same manner as the flat heat transfer tubes 32a, 32b, 32c described above.
  • the flat heat transfer tubes 34 a are located in the outer row of the front lower heat exchanger 22 and are arranged along the longitudinal direction s ⁇ b> 2 of the fins 33. Moreover, the space
  • the flat heat transfer tube 34a faces the direction in which the long axis direction x3 of the flat heat transfer tube 34a is orthogonal to the longitudinal direction s2.
  • the flat heat transfer tubes 34 b are located on the blower 10 side of the front lower heat exchanger 22 and are arranged side by side along the longitudinal direction s ⁇ b> 2 of the fins 33. Moreover, the space
  • the flat heat transfer tube 34b faces the direction in which the long axis direction x3 of the flat heat transfer tube 34b is orthogonal to the longitudinal direction s2.
  • the rear heat exchanger 23 is configured by, for example, fins 35 and flat tube groups 36 made of the same material as the front upper heat exchanger 21 ⁇ / b> A and the front lower heat exchanger 22. That is, the flat tube group 36 has an upwind flat tube 36A disposed on the air introduction side (air introduction side) and a leeward flat tube 36B disposed on the blower 10 side.
  • the windward flat tube 36 ⁇ / b> A is configured by a plurality of flat heat transfer tubes 36 a arranged along the longitudinal direction s ⁇ b> 3 of the fin 31.
  • the leeward side flat tube 36 ⁇ / b> B includes a plurality of flat heat transfer tubes 36 b disposed along the longitudinal direction s ⁇ b> 3 of the fin 31.
  • the flat heat transfer tubes 36a, 36b are configured in the same manner as the flat heat transfer tubes 32a, 32b, 32c described above.
  • the fin 35 has an elongated shape from the upper end 35a toward the lower end 35b in a side view from the direction of the rotation axis (rotation center O) of the blower 10.
  • the front end 35c and the rear end 35d of the fin 35 are inclined rearward from the upper end 35a toward the lower end 35b, and the front end 35c and the rear end 35d are parallel to each other.
  • the flat tube group 36 is configured in two rows (a plurality of rows) by a plurality of flat heat transfer tubes 36a and 36b from the outside of the indoor heat exchanger 8A toward the blower 10 (toward the air flow direction). Yes.
  • the flat heat transfer tubes 36 a are located outside the rear heat exchanger 23 and are arranged side by side along the longitudinal direction s 3 of the fins 35. Moreover, the space
  • the flat heat transfer tube 36a faces the direction in which the long axis direction x4 of the flat heat transfer tube 36a is orthogonal to the longitudinal direction s3.
  • the flat heat transfer tubes 36 b are located on the blower 10 side of the rear heat exchanger 23 and are arranged side by side along the longitudinal direction s 3 of the fins 35. Moreover, the space
  • the upper end 35a of the rear heat exchanger 23 and the upper end 31a of the front upper heat exchanger 21A are parallel to each other, and both are arranged at the same height position.
  • the indoor unit 2 configured as described above, when the blower 10 rotates in a state where the front panel 16 is opened, indoor air is introduced from the air suction ports 11a and 11b, and the filters 12a and 12b and the indoor heat exchanger are introduced. 8A passes through the blower 10 and is blown out from the air outlet 11c.
  • indoor air is sucked from above at the upper air suction port 11a.
  • the indoor air sucked from the air suction port 11a is sucked from the front of the front upper heat exchanger 21A, passes through the front upper heat exchanger 21A, and passes through the room air and the flat heat transfer tubes 32a, 32b, 32c.
  • Heat exchange with the The indoor air sucked from the air suction port 11a is sucked from the front of the front lower heat exchanger 22 and passes through the front lower heat exchanger 22, so that the refrigerant passes through the room air and the flat heat transfer tubes 34a and 34b.
  • the room air sucked from the air suction port 11b is sucked from the front of the front upper heat exchanger 21A and passes through the front upper heat exchanger 21A, thereby passing through the room air and the flat heat transfer tubes 32a, 32b, and 32c. Heat exchange is performed with the passing refrigerant.
  • the indoor air sucked from the air suction port 11b is sucked from the front of the front lower heat exchanger 22 and passes through the front lower heat exchanger 22 so that the refrigerant passes through the room air and the flat heat transfer tubes 34a and 34b. Heat exchange with the
  • FIG. 3 is a cross-sectional view showing an air conditioner according to Comparative Example 1.
  • FIG. 3 collectively shows comparative examples for the first embodiment, the third embodiment, the fourth embodiment, and the fifth embodiment.
  • white arrows A200 to A220 are comparative examples corresponding to the first embodiment
  • arrows A230 to A260 are comparative examples corresponding to the third embodiment
  • arrow A270 corresponds to the fourth embodiment.
  • the arrow A280 is a comparative example corresponding to the fifth embodiment.
  • the flat heat transfer tubes 32b have the same spacing and orientation as the flat heat transfer tubes 32b in the first embodiment.
  • Other configurations are the same as those of the first embodiment.
  • the indoor air sucked from above the front upper heat exchanger 21 is indicated by the white arrow A210.
  • the flow greatly changes in direction so as to pass between the flat heat transfer tube 32b and the flat heat transfer tube 32b.
  • the indoor air which flowed out from the front side upper heat exchanger 21 changes direction to the air blower 10 side, as shown by the white arrow A220.
  • the indoor heat exchanger 200 is often not a plate shape but a curved or bent shape due to restrictions on the shape of the indoor unit.
  • the flat heat transfer tubes are often arranged in parallel with each other at an angle so as to face the rotation center O of the cross-flow fan (blower 10).
  • the air flow path (see arrow A220) from the indoor heat exchanger 200 to the once-through fan (blower 10) does not change greatly, but the air entering the indoor heat exchanger 200 from the outside of the indoor heat exchanger 200
  • the ventilation flow path of this type has a large angle depending on the part, and this increases the ventilation resistance in the indoor heat exchanger 200.
  • a dead water region region P surrounded by ⁇ in FIG. 3 in which air stagnates occurs in a part of the flat heat transfer tube 32b, which may reduce the heat exchange efficiency.
  • the flat heat transfer tubes 32b are flattened so as to reduce the airflow resistance as compared with the case where they are arranged as flat heat transfer tubes 32b.
  • the direction of the heat transfer tubes 32c and 32c is changed by rotating with respect to the flat heat transfer tube 32b. That is, when the flow direction of the air in front of the front upper heat exchanger 21A is the arrow A1 (similar to A200), the flow direction of the air flowing between the flat heat transfer tubes 32c and 32c is the arrow A2, and the front upper heat exchanger After exiting 21A, it becomes arrow A3.
  • the direction of the flat heat transfer tubes 32c and 32c is changed so that the flow direction of the air passing through the front upper heat exchanger 21A is substantially along the air flow in front of the front upper heat exchanger 21A.
  • the heat exchange efficiency in the front upper heat exchanger 21A is improved by changing the orientation of the flat heat transfer tubes 32c and 32c, which are places where the ventilation resistance is increased as it is, so that the ventilation resistance is reduced.
  • the indoor unit 2 with improved performance of the indoor heat exchanger 8A can be realized.
  • the indoor unit 2 of the air conditioner has the fins 31, 33, 35 and the plurality of flat heat transfer tubes 32a, 32b having a flat cross-sectional shape penetrating the fins 31, 33, 35. , 32c, 34a, 34b, 36a, 36b, and an air blower 10 for discharging the air heat-exchanged in the indoor heat exchanger 8A to the outside of the casing 11.
  • the plurality of flat heat transfer tubes 32a, 32b, and 32c are arranged in a plurality of rows side by side in the longitudinal direction s1 of the fin 31, and are arranged on the windward flat tube 32A and the blower 10 side arranged on the air introduction side.
  • the angle ⁇ 10 of the windward flat tube 32A (flat heat transfer tube 32a) is different from the angle ⁇ 20 of a portion of the leeward flat tube 32B (flat heat transfer tube 32c). According to this, it becomes possible to reduce the flow resistance of air from above the indoor heat exchanger 8A (see arrow A2 in FIG. 2), and the heat exchange efficiency in the front upper heat exchanger 21A can be improved.
  • the front upper heat exchanger 32A has an angle ⁇ 20 of a part of the leeward flat tube 32B (flat heat transfer tube 32c) of the leeward flat tube 32A when the gravity direction G is 0 degree. It is smaller than the angle of (flat heat transfer tube 32a). Thereby, since it becomes easy to point the leeward side flat tube 32B (flat heat transfer tube 32c) in the upper part of the indoor heat exchanger 8A toward the blower 10, it is possible to reduce the ventilation resistance.
  • the angle of the leeward flat tube 32A is 45 degrees or more, and the angle of the leeward flat tube 32B (flat heat transfer tube 32c) is less than 45 degrees.
  • the indoor unit 2 of the first embodiment to the air conditioner 100, the air conditioner 100 having excellent operation efficiency can be realized.
  • the present invention is not limited to such a configuration.
  • the uppermost flat heat transfer tube 32a (windward flat tube 32A) in the outer row of the front upper heat exchanger 21A may be used.
  • the direction may be changed so as to reduce the ventilation resistance, or the top flat heat transfer tube 36b (leeward side flat tube 36B) in the row on the blower 10 side of the rear heat exchanger 23.
  • the direction of 36b may be changed so that the ventilation resistance is reduced in the same manner as the flat heat transfer tube 32c.
  • FIG. 4 is a cross-sectional view showing an air conditioner according to the second embodiment.
  • the indoor unit 2 of the second embodiment includes an indoor heat exchanger 8 ⁇ / b> B and a blower 10.
  • the indoor heat exchanger 8B includes a front upper heat exchanger 21, a front lower heat exchanger 22A, and a rear heat exchanger 23.
  • the front lower heat exchanger 22A includes, for example, fins 33 and flat tube groups 34 that are made of the same material as the front upper heat exchanger 21A.
  • the flat tube group 34 is configured in two rows (a plurality of rows) by a plurality of flat heat transfer tubes 34b and 34c from the outside of the indoor heat exchanger 8B toward the blower 10 (toward the air flow direction). Yes. That is, the flat tube group 34 has an upwind flat tube 34A disposed on the air introduction side (air introduction side) and a leeward flat tube 34B disposed on the blower 10 side.
  • the windward flat tube 34 ⁇ / b> A is configured by a plurality of flat heat transfer tubes 34 c disposed along the longitudinal direction s ⁇ b> 2 of the fin 33.
  • the leeward side flat tube 34 ⁇ / b> B includes a plurality of flat heat transfer tubes 34 b arranged along the longitudinal direction s ⁇ b> 2 of the fins 33.
  • the flat heat transfer tubes 34b and 34c are configured similarly to the flat heat transfer tubes 32a, 32b and 32c described above.
  • the long axis direction x3a of the flat heat transfer tube 34c is different from the direction of the long axis direction x3 of the flat heat transfer tube 34b.
  • the angle ⁇ 30 of the flat heat transfer tube 34c of the windward flat tube 34A and the angle ⁇ 40 of the flat heat transfer tube 34b of the leeward flat tube 34B in the front lower heat exchanger 22A are different.
  • the angle ⁇ 30 of the flat heat transfer tube 34c of the windward flat tube 34A is smaller than the angle ⁇ 40 of the flat heat transfer tube 34b of the leeward flat tube 34B.
  • the angle ⁇ 30 means an angle formed by the gravity direction G and the longitudinal direction x3a of the flat heat transfer tube 34c. Further, the angle ⁇ 40 means an angle formed by the gravity direction G and the longitudinal direction x3 of the flat heat transfer tube 34b. Specifically, the angle ⁇ 30 of the windward flat tube 34A is set to less than 90 degrees, and the angle ⁇ 40 of the flat heat transfer tube 34b of the leeward flat tube 34B is set to 90 degrees or more.
  • the flat heat transfer tubes 34 c are located in the outer row of the front lower heat exchanger 22 ⁇ / b> A, and are arranged along the longitudinal direction s ⁇ b> 2 of the fins 33. Moreover, the space
  • the direction (arrow A4) along the air flow in front of 22 A of front side lower heat exchangers becomes the flow direction (arrow A5) of the air which passes along the flat heat exchanger tubes 34c and 34c.
  • the angle when changing the direction from the arrow A4 to the arrow A5 is smaller than in the case where the flat heat transfer tube 34c is a flat heat transfer tube 34a1 indicated by a broken line.
  • the heat exchange efficiency in the front lower heat exchanger 22A is improved by changing the direction of the flat heat transfer tubes 34c and 34c, which are the places where the ventilation resistance is increased as it is, so that the ventilation resistance is reduced.
  • the indoor unit 2 with improved performance of the indoor heat exchanger 8B can be realized.
  • the wind flow here is likely to face the longitudinal direction s2 of the front lower heat exchanger 22A.
  • the air is supplied only from the top of the indoor unit 2.
  • the flow of wind is likely to face the longitudinal direction s2 of the front lower heat exchanger 22A. Therefore, as shown in FIG. 4, in the front lower heat exchanger 22 ⁇ / b> A, all the rows of the flat heat transfer tubes 34 c in the outer row are configured to face the same direction.
  • all the flat heat transfer tubes 34c in the same row are oriented in the same direction with respect to the longitudinal direction s2. According to this, in all of the adjacent flat heat transfer tubes 34c, 34c, the change in the angle of the wind direction from the front side of the front lower heat exchanger 22A toward the flat heat transfer tube 34c is reduced, so that the ventilation resistance can be reduced. As a result, the heat exchange efficiency in the front lower heat exchanger 22A can be further improved, and the indoor unit 2 with improved performance of the indoor heat exchanger 8B can be realized.
  • the angle ⁇ 30 is 90 degrees or more and the angle ⁇ 40 is less than 90 degrees, not only the ventilation resistance increases, but also the dead water area (see FIG. 3) is generated as described above due to the change of the wind direction, and the heat exchange efficiency. There is a risk of lowering. Therefore, it is preferable that the angle ⁇ 30 is less than 90 degrees and the angle ⁇ 40 is 90 degrees or more. Thereby, ventilation resistance can be reduced, suppressing generation
  • the case where the orientation of all the flat heat transfer tubes 34c in one row of the front lower heat exchanger 22A is changed has been described as an example, but the flat heat transfer in the outer row of the rear heat exchanger 23 is described.
  • the direction of all the rows of the heat tubes 36a may be changed so as to reduce the resistance from the wind direction passing in front of the rear heat exchanger 23 to the wind direction passing through the flat heat transfer tubes 36a.
  • FIG. 5 is a cross-sectional view showing an air conditioner according to the third embodiment.
  • the indoor unit 2 of the third embodiment includes an indoor heat exchanger 8 ⁇ / b> C and a blower 10.
  • the indoor heat exchanger 8C includes a front upper heat exchanger 21, a front lower heat exchanger 22, and a rear heat exchanger 23A.
  • the rear heat exchanger 23A is constituted by, for example, fins 33 and flat tube groups 36 made of the same material as the front upper heat exchanger 21A.
  • the flat tube group 36 is arranged in two rows by a plurality of flat heat transfer tubes 36a, 36b, 36c, and 36d from the outer side of the rear heat exchanger 23A to the inner side (toward the blower 10) (toward the air flow direction). (Multiple columns). That is, the flat tube group 36 has an upwind flat tube 36A disposed on the air introduction side (air introduction side) and a leeward flat tube 36B disposed on the blower 10 side.
  • the windward flat tube 36 ⁇ / b> A is configured by a plurality of flat heat transfer tubes 36 a and 36 c arranged along the longitudinal direction s ⁇ b> 3 of the fin 33.
  • the leeward side flat tube 36 ⁇ / b> B includes a plurality of flat heat transfer tubes 36 b and 36 d arranged along the longitudinal direction s ⁇ b> 3 of the fin 33.
  • the flat heat transfer tubes 36a, 36b, 36c, and 36d are configured in the same manner as the flat heat transfer tubes 32a, 32b, and 32c.
  • the outer row of the rear heat exchanger 23A includes five flat heat transfer tubes 36a and four flat heat transfer tubes 36c.
  • the inner row (row on the blower 10 side) of the rear heat exchanger 23A is configured by six flat heat transfer tubes 36b and three flat heat transfer tubes 36d.
  • the long axis direction x4 of the flat heat transfer tube 36a is different from the direction of the long axis direction x4a of the flat heat transfer tube 36c.
  • the major axis direction x4 of the flat heat transfer tube 36b is different from the direction of the major axis direction x4b of the flat heat transfer tube 36d.
  • the flat heat transfer tube 36a and the flat heat transfer tube 36b have the same major axis direction x4.
  • the angle ⁇ 70 of the windward flat tube 36A (flat heat transfer tube 36c) in the rear heat exchanger 23A is different from the angle ⁇ 80 of the leeward flat tube 36B (flat heat transfer tube 36d).
  • the angle ⁇ 80 of the flat heat transfer tube 36d of the leeward flat tube 36B is set larger than the angle ⁇ 70 of the flat heat transfer tube 36c of the windward flat tube 36A.
  • the angle ⁇ 70 means an angle formed by the gravity direction G and the longitudinal direction x4a of the flat heat transfer tube 36c.
  • the angle ⁇ 80 means an angle formed by the gravity direction G and the longitudinal direction x4b of the flat heat transfer tube 36d.
  • the angle ⁇ 30 of the windward flat tube 34A is set to less than 45 degrees
  • the angle ⁇ 80 of the leeward flat tube 34B is set to 45 degrees or more.
  • the flat heat transfer tubes 36 a are positioned in the outer row of the rear heat exchanger 23 ⁇ / b> A, and are arranged along the longitudinal direction s ⁇ b> 3 of the fins 35.
  • the flat heat transfer tubes 36 c are located in the outer row of the rear heat exchanger 23 ⁇ / b> A, and are arranged along the longitudinal direction s ⁇ b> 3 of the fins 35.
  • the flat heat transfer tube 36a is disposed at the upper portion of the rear heat exchanger 23A, and the flat heat transfer tube 36c is disposed at the lower portion of the rear heat exchanger 23A.
  • the flat heat exchanger tube 36c is located between the back nose part 14b and the flow-path wall surface 14c.
  • the intervals between adjacent flat heat transfer tubes 36a are formed to be equal, and the intervals between adjacent flat heat transfer tubes 36c are formed to be equal.
  • interval of the flat heat exchanger tubes 36a and 36c is not necessarily limited to an equal space
  • the flat heat transfer tubes 36b are located in a row on the inner side (blower 10 side) of the rear heat exchanger 23A, and are arranged side by side along the longitudinal direction s3 of the fins 35.
  • the flat heat transfer tubes 36d are located in a row on the inner side (blower 10 side) of the rear heat exchanger 23A, and are arranged side by side along the longitudinal direction s3 of the fins 35.
  • the flat heat transfer tube 36b is arranged at the upper part of the rear side heat exchanger 23A, and the flat heat transfer tube 36d is arranged at the lower side of the rear side heat exchanger 23A.
  • the flat heat transfer tube 36d is located between the back nose portion 14b and the flow path wall surface 14c.
  • the intervals between adjacent flat heat transfer tubes 36b are formed to be equal, and the intervals between adjacent flat heat transfer tubes 36d are formed to be equal.
  • interval of the flat heat exchanger tubes 36b and 36d is not necessarily limited to an equal space
  • the flat heat transfer tube 36 a faces the direction in which the long axis direction x 4 of the flat heat transfer tube 36 a is orthogonal to the longitudinal direction s 3 of the fin 35. Further, when the direction of gravity is 0 degree, the angle ⁇ 50 of the flat heat transfer tube 36a is set to 45 degrees. The angle ⁇ 50 is not limited to 45 degrees, and may be less than 45 degrees. Further, the flat heat transfer tube 36c is oriented in a different direction from the flat heat transfer tube 36a and more in the direction of reducing the ventilation resistance than when it is assumed that the flat heat transfer tube 36a is arranged.
  • the flat heat transfer tube 36 b faces the direction in which the long axis direction x 4 of the flat heat transfer tube 36 b is orthogonal to the longitudinal direction s 3 of the fin 35. Further, when the direction of gravity is 0 degree, the angle ⁇ 60 of the flat heat transfer tube 36b is set to 45 degrees. Note that the angle ⁇ 60 is not limited to 45 degrees, and may be less than 45 degrees. Further, the flat heat transfer tube 36d has a different direction from the flat heat transfer tube 36b, and is directed to reduce the ventilation resistance as compared with the case where it is assumed that the flat heat transfer tube 36b is disposed.
  • a wall (channel wall surface 14 c) exists on the back side of the indoor heat exchanger 200.
  • the rear heat exchanger 23 of the indoor heat exchanger 200 shown in FIG. 3 includes a plurality of flat heat transfer tubes 36a and 36b, and all the flat heat transfer tubes 36a and 36b are orthogonal to the longitudinal direction s3 of the fins 35. Facing. Therefore, as indicated by white arrows A230 and A260 in FIG. 3, the wind direction is almost reversed before and after entering the rear heat exchanger 23, so that the air flows into the rear heat exchanger 23 and flows out. In the meantime, the direction of air flow changes greatly.
  • column outside the rear side heat exchanger 23 form ( The changing angle) is ⁇ 100.
  • the direction of the wind when passing through the flat heat transfer tubes 36a in the outer row of the rear heat exchanger 23 (arrow A240) and the time when passing through the flat heat transfer tubes 36b on the blower 10 side of the rear heat exchanger 23 The angle (change angle) formed by the wind direction (arrow A250) is defined as ⁇ 200.
  • the angle (change angle) formed by the wind direction (arrow A250) when passing through the flat heat transfer tube 36b on the blower 10 side and the wind direction (arrow A260) after flowing out from the rear heat exchanger 23 is ⁇ 300.
  • the angle ⁇ 100 can be reduced by changing the direction of the flat heat transfer tubes 36a in the row outside the rear heat exchanger 23, but the angle ⁇ 200 increases.
  • the angle ⁇ 300 does not change even if the orientation of the flat heat transfer tubes 36a in the outer row of the rear heat exchanger 23 is changed.
  • the angle ⁇ 70 of the windward flat tube 36A (flat heat transfer tube 36c) in the rear heat exchanger 23A and the angle ⁇ 80 of the leeward flat tube 36B (flat heat transfer tube 36d) are made different.
  • the angle ⁇ 80 of the flat heat transfer tube 36d of the leeward flat tube 36B is made larger than the angle ⁇ 70 of the flat heat transfer tube 36c of the windward flat tube 36A.
  • the angle ⁇ 70 of the windward flat tube 34A is set to less than 45 degrees
  • the angle ⁇ 80 of the leeward flat tube 34B is set to 45 degrees or more.
  • the flat heat transfer tubes 36c face the same direction, but the flat heat transfer tubes 36c may face different directions (the same applies to the flat heat transfer tubes 36d).
  • FIG. 6 is a cross-sectional view showing an air conditioner according to Comparative Example 2.
  • the indoor heat exchanger 300 shown as a comparative example in FIG. 6 is configured such that the flat heat transfer tubes 340 in the outer row of the front lower heat exchanger 22 face the horizontal direction (substantially horizontal direction).
  • the flat heat transfer tube 340 having such a direction is provided, when the air conditioner 100 (see FIG. 1) is in a cooling operation, condensed water is formed on the upper portion (flat portion) of the flat heat transfer tube 340. It becomes easy to collect. If the condensed water easily accumulates, water droplets are likely to be discharged from the air outlet 11c of the indoor unit during the cooling operation, causing a so-called “water jump”.
  • the direction of the flat heat transfer tube 34a in the indoor heat exchanger 8A of the first embodiment, the direction of the flat heat transfer tube 34a, in the indoor heat exchanger 8B of the second embodiment, the direction of the flat heat transfer tube 34c, the indoor heat exchanger 8C of the third embodiment. Then, the direction of the flat heat exchanger tube 34a is made not to face the horizontal direction (substantially horizontal direction).
  • the flat heat transfer tubes 34a and 34c not only the flat heat transfer tubes 34a and 34c, but also the flat heat transfer tubes 32a, 32b, 34b, 36a and 36b of the indoor heat exchanger 8A, the flat heat transfer tubes 32a, 32b, 34b and 36a of the indoor heat exchanger 8B, It is preferable that the orientation of 36b and the orientation of the flat heat transfer tubes 32a, 32b, 34b, 36a, 36b, 36c, 36d of the indoor heat exchanger 8C do not face the horizontal direction (substantially horizontal direction). This makes it difficult for the condensed water to accumulate in the flat heat transfer tubes 32a, 32b, 34a to 34c, and 36a to 36d, thereby suppressing "water jumping".
  • the air flow in the portion where the front upper heat exchanger 21 and the front lower heat exchanger 22 are combined is indicated by the front upper heat at a white arrow A270.
  • the flow of air at the portion where the exchanger 21 and the rear heat exchanger 23 are combined is indicated by a white arrow A280.
  • the ventilation resistance is small. Therefore, if the air flow is concentrated here, the amount of air flowing to the indoor heat exchanger 200 in other parts is reduced, and the performance of the indoor heat exchanger 200 is reduced. May decrease.
  • the direction of a part of the flat heat transfer tube in the portion where the air flow is likely to concentrate in this way is set so as to prevent the air flow.
  • the flow concentration is prevented and the performance as a heat exchanger can be improved.
  • FIG. 7 is a cross-sectional view showing an air conditioner according to the fourth embodiment.
  • the indoor unit 2 of the fourth embodiment includes an indoor heat exchanger 8D and a blower 10.
  • the indoor heat exchanger 8D includes a front upper heat exchanger 21B, a front lower heat exchanger 22B, and a rear heat exchanger 23.
  • the front upper heat exchanger 21B is configured by fins 31 (a plurality of fins) and a flat tube group 32. That is, the flat tube group 32 has an upwind flat tube 32A disposed on the air introduction side (air introduction side) and a leeward flat tube 32B disposed on the blower 10 side.
  • the windward flat tube 32 ⁇ / b> A is configured by a plurality of flat heat transfer tubes 32 a and 32 d arranged along the longitudinal direction s ⁇ b> 1 of the fin 31.
  • the leeward side flat tube 32 ⁇ / b> B includes a plurality of flat heat transfer tubes 32 b arranged along the longitudinal direction s ⁇ b> 1 of the fin 31.
  • the plurality of flat heat transfer tubes 32 a and 32 d are arranged side by side in the longitudinal direction s 1 of the fin 31.
  • the direction of the long-axis direction x1 of the flat heat transfer tube 32a is the direction orthogonal to the longitudinal direction s1.
  • the direction of the long-axis direction x5 of the flat heat transfer tube 32d is different from the direction of the flat heat transfer tube 32a, and the ventilation resistance is greater than when assuming that the flat heat transfer tube 32a is disposed (see the flat heat transfer tube 32a1 indicated by a broken line). It is facing the direction of raising.
  • the flat heat transfer tube 32d is configured to be oriented in a direction perpendicular to the air flow (arrow A270, see FIG. 3).
  • the front lower heat exchanger 22B is composed of fins 33 (a plurality of fins) and a heat transfer tube group 34. That is, the flat tube group 34 has an upwind flat tube 34A disposed on the air introduction side (air introduction side) and a leeward flat tube 34B disposed on the blower 10 side.
  • the windward flat tube 34 ⁇ / b> A is configured by a plurality of flat heat transfer tubes 34 a and 34 d disposed along the longitudinal direction s ⁇ b> 2 of the fin 33.
  • the leeward side flat tube 34 ⁇ / b> B includes a plurality of flat heat transfer tubes 34 b arranged along the longitudinal direction s ⁇ b> 2 of the fins 33.
  • the plurality of flat heat transfer tubes 34 a and 34 d are arranged side by side in the longitudinal direction s 2 of the fins 33.
  • the direction of the long-axis direction x3 of the flat heat transfer tube 34a faces the direction orthogonal to the longitudinal direction s2.
  • the direction of the long-axis direction x6 of the flat heat transfer tube 32d is different from the direction of the flat heat transfer tube 34a, and the ventilation resistance is greater than when assuming that the flat heat transfer tube 34a is disposed (see the flat heat transfer tube 34a1 indicated by a broken line). It is facing the direction of raising.
  • the flat heat transfer tube 34d is configured to be oriented in a direction perpendicular to the air flow (arrow A270, see FIG. 3).
  • the angle ⁇ 91 of the flat heat transfer tube 32d of the windward flat tube 32A and the angle ⁇ 10 of the flat heat transfer tube 32b of the leeward flat tube 32B at the boundary between the front upper heat exchanger 21B and the front lower heat exchanger 22B is different.
  • the angle ⁇ 92 of the flat heat transfer tube 34d of the windward flat tube 34A and the angle ⁇ 40 of the flat heat transfer tube 34b of the leeward flat tube 34B at the boundary between the front upper heat exchanger 21B and the front lower heat exchanger 22B are different. Yes.
  • the angle ⁇ 10 of the flat heat transfer tube 32b of the leeward flat tube 32B is larger than the angle ⁇ 91 of the flat heat transfer tube 32d of the windward flat tube 32A. Furthermore, the angle ⁇ 91 of the windward flat tube 32A (flat heat transfer tube 32d) is less than 45 degrees, and the angle of the leeward flat tube 32B (flat heat transfer tube 32b) is 45 degrees or more.
  • the angle ⁇ 40 of the flat heat transfer tube 34b of the leeward flat tube 34B is larger than the angle ⁇ 92 of the flat heat transfer tube 34d of the windward flat tube 34A. Further, the angle ⁇ 92 of the windward flat tube 34A (flat heat transfer tube 34d) is less than 45 degrees, and the angle of the leeward flat tube 34B (flat heat transfer tube 34b) is 45 degrees or more.
  • the airflow resistance is low as it is, and at the boundary of the bent portion (combination portion) between the front upper heat exchanger 21B and the front lower heat exchanger 22B, which is a place where the heat exchange efficiency is low, the flatness is flat.
  • the direction of the heat transfer tubes 32d and 34d is changed so that the ventilation resistance is increased.
  • FIG. 8 is a cross-sectional view showing an air conditioner according to the fifth embodiment.
  • the indoor unit 2 of 5th Embodiment is provided with the indoor heat exchanger 8E and the air blower 10.
  • the indoor heat exchanger 8E includes a front upper heat exchanger 21C, a front lower heat exchanger 22, and a rear heat exchanger 23B.
  • the front upper heat exchanger 21 ⁇ / b> C includes, for example, fins 31 and flat tube groups 32 made of the same material as the front upper heat exchanger 21 ⁇ / b> A.
  • the front upper heat exchanger 21 ⁇ / b> C includes fins 31 (plural fins) and a flat tube group 32. That is, the flat tube group 32 has an upwind flat tube 32A disposed on the air introduction side (air introduction side) and a leeward flat tube 32B disposed on the blower 10 side.
  • the windward flat tube 32 ⁇ / b> A is configured by a plurality of flat heat transfer tubes 32 a arranged along the longitudinal direction s ⁇ b> 1 of the fins 31.
  • the leeward flat tube 32 ⁇ / b> B is configured by a plurality of flat heat transfer tubes 32 b and 32 e arranged along the longitudinal direction s ⁇ b> 1 of the fin 31.
  • the front upper heat exchanger 21C includes fins 31 (a plurality of fins) and a plurality of flat heat transfer tubes 32a, ..., 32b, ..., 32e, from the outside of the front upper heat exchanger 21C. It consists of two rows toward the inside (blower 10 side).
  • the flat heat transfer tubes 32 b and 32 e are arranged side by side in the longitudinal direction s 1 of the fin 31.
  • the direction of the major axis direction x1 of the flat heat transfer tubes 32a and 32b is the direction orthogonal to the longitudinal direction s1.
  • the direction of the long-axis direction x7 of the flat heat transfer tube 32e is different from the direction of the flat heat transfer tube 32b, and it is assumed that the flat heat transfer tube 32b is disposed (see the flat heat transfer tube 32b1 indicated by a virtual line).
  • the direction is to raise. In other words, the direction is perpendicular to the air flow indicated by arrow A280 in FIG.
  • the flat heat transfer tube 32e is first rotated with respect to the flat heat transfer tube 32b so as to increase the ventilation resistance as indicated by the flat heat transfer tube 32b1 in the broken line, and is further indicated by the flat heat transfer tube 32b2 in the broken line. As described above, the air flow resistance is translated to further increase.
  • the rear heat exchanger 23B is constituted by fins 35 (a plurality of fins) and a flat tube group 36. That is, the flat tube group 36 has an upwind flat tube 36A disposed on the air introduction side (air introduction side) and a leeward flat tube 36B disposed on the blower 10 side.
  • the windward flat tube 36 ⁇ / b> A includes a plurality of flat heat transfer tubes 36 a disposed along the longitudinal direction s ⁇ b> 3 of the fin 35.
  • the leeward side flat tube 36 ⁇ / b> B includes a plurality of flat heat transfer tubes 36 b and 36 e arranged along the longitudinal direction s ⁇ b> 3 of the fin 35.
  • the rear heat exchanger 23B has fins 35 (a plurality of fins) and a plurality of flat heat transfer tubes 36a, ..., 36b, ..., 36e, from the outside of the rear front heat exchanger 23B. It consists of two rows toward the inside (blower 10 side).
  • the flat heat transfer tubes 36 a are arranged side by side in the longitudinal direction s 3 of the fins 33.
  • the direction of the major axis direction x4 of the flat heat transfer tubes 36a, 36b is oriented in a direction orthogonal to the longitudinal direction s3.
  • the direction of the long-axis direction x8 of the flat heat transfer tube 36e is different from the direction of the flat heat transfer tubes 36a and 36b, and it is assumed that the flat heat transfer tube 36b is disposed (see the flat heat transfer tube 36b1 indicated by a broken line). It faces the direction of increasing resistance. In other words, the direction is perpendicular to the air flow indicated by arrow A280 in FIG.
  • the flat heat transfer tube 36e is rotated so as to increase the ventilation resistance as shown by the flat heat transfer tube 36b1 on the basis of the flat heat transfer tube 36b, and changes its direction. As indicated by the heat transfer tube 36b2, it is translated so that the ventilation resistance is further increased.
  • the directions (rotation and translation) of 32e and 34g are changed so as to increase the ventilation resistance.
  • the directions of some of the flat heat transfer tubes 32a and 32b are orthogonal to the longitudinal direction s1 of the fin 31, and some of the flat heat transfer tubes 34a.
  • 34b is a direction perpendicular to the longitudinal direction s2 of the fin 33
  • some flat heat transfer tubes 36a, 36b are oriented to the fin 35 in a direction perpendicular to the longitudinal direction s3. In the range where the effect of the invention is exerted, it may be deviated from orthogonal.
  • the indoor heat exchangers 8A to 8E have been described by taking the example in which the flat heat transfer tubes are configured in two rows, but may be in one row, There may be three or more rows.
  • indoor heat exchangers 8A to 8C of the plurality of embodiments of the first to third embodiments may be combined. Further, the first to third embodiments and the fourth and fifth embodiments may be combined.
  • the case where the front upper heat exchanger and the front lower heat exchanger are configured as separate bodies has been described as an example. It may be configured.
  • the front upper heat exchanger and the rear heat exchanger may be integrated.
  • blower 10 a cross-flow fan is taken as an example, but another type of blower such as a propeller fan may be used.
  • the case where the front upper heat exchanger and the rear heat exchanger do not overlap in the vertical direction has been described as an example.
  • the end 31d and the upper end 35a of the rear heat exchanger 23 may be configured to be in line contact with each other.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

La présente invention comprend : un échangeur de chaleur intérieur (8A) ayant une ailette (31) et une pluralité de tubes de transfert de chaleur plats (32a, 32b, 32c) pénétrant à travers l'ailette (31) et ayant une forme de section transversale plate ; et une soufflante (10) pour évacuer de l'air ayant fait l'objet d'un échange de chaleur dans l'échangeur de chaleur intérieur (8A) vers l'extérieur d'un boîtier (11). La pluralité de tubes de transfert de chaleur plats (32a, 32b, 32c) est disposée dans la direction longitudinale (s1) de l'ailette (31) dans une pluralité de rangées, et comprennent des tubes plats côté contre le vent (32A) disposés sur le côté entrée d'air et des tubes plats côté dans le sens du vent (32B) disposés sur le côté soufflante (10). L'angle des tubes plats côté contre le vent (32A), et l'angle des tubes de transfert de chaleur plats (32c) constituant certains des tubes plats côté dans le sens du vent (32B), diffèrent.
PCT/JP2017/037348 2017-02-06 2017-10-16 Unité intérieure pour climatiseur et climatiseur pourvu de celle-ci WO2018142681A1 (fr)

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JP2017019262A JP6807766B2 (ja) 2017-02-06 2017-02-06 空気調和機の室内機およびこれを備えた空気調和機
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56117287U (fr) * 1980-01-31 1981-09-08
JPS63233225A (ja) * 1987-03-20 1988-09-28 Matsushita Electric Ind Co Ltd 空気調和機
JP2007183088A (ja) * 2005-12-07 2007-07-19 Matsushita Electric Ind Co Ltd 熱交換器
JP2009281693A (ja) * 2008-05-26 2009-12-03 Mitsubishi Electric Corp 熱交換器、その製造方法及びこの熱交換器を用いた空調冷凍装置
JP2011021884A (ja) * 2010-11-05 2011-02-03 Mitsubishi Electric Corp 空気調和機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56117287U (fr) * 1980-01-31 1981-09-08
JPS63233225A (ja) * 1987-03-20 1988-09-28 Matsushita Electric Ind Co Ltd 空気調和機
JP2007183088A (ja) * 2005-12-07 2007-07-19 Matsushita Electric Ind Co Ltd 熱交換器
JP2009281693A (ja) * 2008-05-26 2009-12-03 Mitsubishi Electric Corp 熱交換器、その製造方法及びこの熱交換器を用いた空調冷凍装置
JP2011021884A (ja) * 2010-11-05 2011-02-03 Mitsubishi Electric Corp 空気調和機

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