WO2020152823A1 - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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Publication number
WO2020152823A1
WO2020152823A1 PCT/JP2019/002256 JP2019002256W WO2020152823A1 WO 2020152823 A1 WO2020152823 A1 WO 2020152823A1 JP 2019002256 W JP2019002256 W JP 2019002256W WO 2020152823 A1 WO2020152823 A1 WO 2020152823A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
sheet metal
bent
bending
housing
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Application number
PCT/JP2019/002256
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French (fr)
Japanese (ja)
Inventor
一輝 永井
周平 横田
將太 須貝
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2020567314A priority Critical patent/JPWO2020152823A1/en
Priority to PCT/JP2019/002256 priority patent/WO2020152823A1/en
Publication of WO2020152823A1 publication Critical patent/WO2020152823A1/en

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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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins

Definitions

  • the present invention relates to an indoor unit of a wall-mounted air conditioner.
  • the heat exchanger is arranged on the front side of the housing and has a bent shape in which the upper side is bent to the rear side with respect to the lower side, and the heat exchanger is arranged on the rear side of the housing. And a rear heat exchanger connected to one end of the front heat exchanger.
  • the heat exchanger is fixed in the housing by a side plate made of sheet metal attached to the right side surface of the heat exchanger. Further, the front heat exchanger is bent with the side plate attached to the right side surface, and the bending angle is maintained by engaging the engaging holes provided in the side plate with the engaging protrusions.
  • the bending angle of the front heat exchanger is maintained by the engagement holes and the engagement protrusions provided in the side plate engaging with each other.
  • the bent portion of the side plate that is bent together when the front heat exchanger is bent is narrower than other parts, the rigidity of the side plate in the plate thickness direction is low, and the front heat is not formed after the side plate is molded.
  • the bending angle of the front heat exchanger cannot be maintained at a correct angle.
  • the bending angle of the front heat exchanger affects the performance of the air conditioner, if the bending angle of the front heat exchanger cannot be maintained at a correct angle, there is a problem in that the performance of the air conditioner varies. there were.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide an indoor unit of an air conditioner that can suppress variations in the performance of the air conditioner. ..
  • An indoor unit of an air conditioner a heat exchanger having a plurality of fins arranged in parallel at intervals and a plurality of heat transfer tubes penetrating orthogonally to the fins,
  • the heat exchanger includes a heat exchanger and a rear heat exchanger arranged on the rear side of the housing and connected to one end of the front heat exchanger.
  • the heat exchanger is provided on a side surface of the front heat exchanger.
  • a fixing plate made of sheet metal for fixing the container to the inside of the housing is attached, and the fixing plate made of sheet metal has a width narrower than other portions, and is bent when bending in the direction along the plate surface. It is provided with a bent portion which is a position and a wall portion which is formed by being bent at an end portion on an inner peripheral side when the bent portion is bent.
  • the sheet metal fixing plate is formed by being bent at the end portion on the inner peripheral side at the time of bending of the bending portion having a width narrower than other portions. It has a wall. Therefore, the rigidity of the sheet metal fixed plate in the plate thickness direction can be increased, and the deformation of the sheet metal fixed plate can be suppressed. Therefore, it is possible to prevent the bending angle of the front heat exchanger from being unable to be maintained at a correct angle. .. As a result, it is possible to suppress variations in the performance of the air conditioner.
  • FIG. 1 It is a perspective view which shows the indoor unit of the air conditioner which concerns on embodiment of this invention. It is the schematic diagram which looked at the vertical cross section of the indoor unit of the air conditioner which concerns on embodiment of this invention from the side. It is an exploded perspective view showing an indoor unit of an air harmony machine concerning an embodiment of the invention. It is a perspective view showing a heat exchanger concerning an embodiment of the invention. It is the side view which shows the state in which the sheet metal fixing plate is not attached to the heat exchanger which concerns on embodiment of this invention. It is the detailed view which looked at the state where the sheet metal fixed board was attached to the heat exchanger concerning the embodiment of the present invention. It is a perspective view which shows the conventional 1st sheet metal fixed plate. It is an enlarged view of the broken line part of FIG.
  • FIG. 1 is a perspective view showing an indoor unit 100 of an air conditioner according to an embodiment of the present invention.
  • FIG. 2 is a schematic view of a vertical cross section of the indoor unit 100 of the air conditioner according to the embodiment of the present invention as viewed from the side.
  • FIG. 3 is an exploded perspective view showing the indoor unit 100 of the air conditioner according to the embodiment of the present invention.
  • the indoor unit 100 of the air conditioner according to the present embodiment is a wall-mounted type that is installed on a wall surface in the room.
  • the interior of the indoor unit 100 is configured by a casing 1 including a front casing 1a and a rear casing 1b attached to the rear side of the front casing 1a.
  • a front design panel 2 is provided on the front side of the front housing 1a.
  • the front design panel 2 is provided so as to be rotatable in the vertical direction and removable so that an installer, a user, and the like can easily perform installation work, cleaning, and inspection.
  • a suction port 3 for sucking air into the housing 1 is provided in an upper portion of the front housing 1a, and an air outlet 4 for blowing air from the inside of the housing 1 is provided in a lower portion of the front housing 1a. Is provided. Further, the air outlet 4 is provided with a vertical airflow direction adjusting plate 5 that adjusts the vertical direction of the air blown from the air outlet 4.
  • a crossflow fan 6 for generating a flow of air, and a heat exchanger 10 arranged to cover the crossflow fan 6 from above and performing heat exchange with the air blown from the crossflow fan 6 are provided in the rear housing 1b.
  • the electrical component box 7 on which the drive circuit of the cross flow fan 6 and the like are mounted are fixed and housed inside the housing 1.
  • the heat exchanger 10 is a fin-tube type, and has a plurality of fins 11 arranged in parallel with each other with a space therebetween, that is, a plurality of fins 11 and a plurality of heat transfer tubes 12 that penetrate through the fins 11 at right angles. doing.
  • the heat exchanger 10 is arranged on the front side of the housing 1, and the front heat exchanger 10a has a bent shape in which the upper side is bent to the rear side with respect to the lower side, and the heat exchanger 10 is arranged on the rear side of the housing 1.
  • a rear surface heat exchanger 10b connected to one end of the front surface heat exchanger 10a.
  • the crossflow fan 6 When the operation of the air conditioner is started, the crossflow fan 6 is rotationally driven, and the air flow generated thereby causes the indoor air to be sucked into the housing 1 through the suction port 3.
  • the sucked indoor air is heat-exchanged in the heat exchanger 10 when passing through the heat exchanger 10, becomes cold air or warm air, and is blown out into the room from the air outlet 4.
  • the vertical airflow direction adjusting plate 5 provided at the air outlet 4 is rotated to adjust the vertical direction of the cool air or the warm air blown out from the air outlet 4.
  • FIG. 4 is a perspective view showing the heat exchanger 10 according to the embodiment of the present invention.
  • FIG. 5 is a schematic side view of the heat exchanger 10 according to the embodiment of the present invention in which the sheet metal fixed plate 20 is not attached.
  • FIG. 6 is a detailed view of the heat exchanger 10 according to the embodiment of the present invention with the fixing plate 20 made of sheet metal attached to the side view.
  • a resin fixing plate 14 for fixing the heat exchanger 10 to the inside of the housing 1, more specifically, the rear housing 1b is attached to the left side surface of the heat exchanger 10. ing. Further, on the right side surface of the heat exchanger 10, a metal plate fixing plate 20 for fixing the heat exchanger 10 to the inside of the housing 1, specifically, the rear housing 1b is attached.
  • the sheet metal fixed plate 20 is composed of a first sheet metal fixed plate 20a attached to the front heat exchanger 10a and a second sheet metal fixed plate 20b attached to the rear heat exchanger 10b.
  • the sheet metal fixing plate 20 is attached to the right side surface of the heat exchanger 10 by being fixed with a screw 30.
  • the first sheet metal fixed plate 20a is fixed to the right side surface of the front heat exchanger 10a with a screw 30
  • the second sheet metal fixed plate 20b is fixed to the right side surface of the rear heat exchanger 10b with a screw 30. It is fixed.
  • the U-shaped portion of the heat transfer tube 12 is arranged on the left side surface of the heat exchanger 10, and brazing for connecting the U-shaped tube is not necessary. Therefore, the resin fixing plate 14 attached to the left side surface of the heat exchanger 10 is made of resin. On the other hand, the right side surface of the heat exchanger 10 requires brazing by connecting a U-shaped tube to the end of the heat transfer tube 12. Therefore, the sheet metal fixed plate 20 attached to the right side surface of the heat exchanger 10 is made of sheet metal.
  • FIG. 7 is a perspective view showing a conventional first sheet metal fixed plate 40a.
  • FIG. 8 is an enlarged view of the broken line portion of FIG. 7.
  • FIG. 9 is a side view schematically showing a state before bending of the front heat exchanger 10a to which the conventional first sheet metal fixing plate 40a is attached.
  • FIG. 10 is the schematic diagram which looked at the state after bending of the front heat exchanger 10a to which the conventional 1st sheet metal fixed plate 40a was attached from the side view.
  • the conventional first sheet metal fixing plate 40a is a substantially rectangular flat plate as shown in FIGS. 7 and 8.
  • the first fixing plate 40a made of sheet metal has a width narrower than other portions, and has a bending portion 41 which is a bending position when bending in a direction along the plate surface, a fitting hole portion 42, and a fitting hole portion 42. It has a fitting projection 43 fitted into the fitting hole 42.
  • the bent portion 41 is formed by cutting out a part of both side surfaces on the longitudinal side of the first sheet metal fixed plate 40a.
  • the bending portion 41 which is the bending position of the first sheet metal fixing plate 40a, has a narrower width than the other portions. This is because when the front heat exchanger 10a is bent, the front heat This is for facilitating bending of the exchanger 10a.
  • the bent portion 41 By providing the bent portion 41 in this manner, the front heat exchanger 10a can be easily bent, but since the bent portion 41 is narrower in width than other portions, the first sheet metal fixing plate 40a is formed.
  • the rigidity in the plate thickness direction is lower than that in other portions, and the bent portion 41 is easily deformed in the plate thickness direction.
  • the first sheet metal fixed plate 40a is mounted before being attached to the right side surface of the front heat exchanger 10a and bent to form the front heat exchanger 10a. May be deformed in the plate thickness direction at the bent portion 41. Then, even if the front heat exchanger 10a is tried to be bent with the first sheet metal fixing plate 40a deformed in the plate thickness direction at the bending portion 41, it is difficult to bend the front heat exchanger 10a, or the front heat exchanger 10a is difficult to bend. Even if the container 10a is bent, the bending angle may vary. Then, since the heat exchange efficiency in the heat exchanger 10 is reduced, the performance of the air conditioner is reduced.
  • FIG. 11 is a perspective view showing a first sheet metal fixed plate 20a according to the embodiment of the present invention.
  • FIG. 12 is an enlarged view of the broken line portion of FIG.
  • the first sheet metal fixed plate 20a has the configuration shown in FIGS. 11 and 12.
  • the first sheet metal fixing plate 20a is a substantially rectangular flat plate.
  • the width of the first fixing plate 20a made of sheet metal is narrower than that of the other portions, and the bending portion 21 is a bending position when bending in the direction along the plate surface, the fitting hole portion 22, and the fitting hole portion 22. It has a fitting projection portion 23 fitted in the fitting hole portion 22.
  • the bent portion 21 is formed by cutting out a part of both side surfaces on the longitudinal side of the first sheet metal fixed plate 20a.
  • the first fixing plate 20a made of sheet metal is provided at the wall portion 24 provided at the end portion on the inner peripheral side when the bending portion 21 is bent, and at the end portion on the outer peripheral side when the bending portion 21 is bent. It has a notch 25.
  • the positions where the fitting hole 22 and the fitting protrusion 23 are provided may be opposite.
  • the end portion on the inner peripheral side and the end portion on the outer peripheral side at the time of bending the bent portion 21 are bent in a state where the first sheet metal fixing plate 40a is attached to the right side surface of the front heat exchanger 10a. It is the end on the inner peripheral side and the end on the outer peripheral side of the bent portion 21 when it is opened.
  • the wall portion 24 is formed by bending the end portion on the inner peripheral side at the time of bending the bending portion 21 to the outside, the thickness thereof is the plate thickness, and the amount of protrusion to the outside (hereinafter referred to as height). ) Is equal to or less than the peripheral edge portion 26 provided on the peripheral edge of the hole into which the heat transfer tube 12 is inserted.
  • the bending angle of the wall portion 24 is, for example, 90 degrees, but is not limited thereto.
  • the outer side is the outer side when the first sheet metal fixed plate 20a is attached to the right side surface of the front heat exchanger 10a, and the same applies hereinafter.
  • the wall portion 24 is bent outward is that if the wall portion 24 is bent inward, it will hit the fin 11. Further, the height of the wall portion 24 is equal to or less than that of the peripheral edge portion 26. If the height of the wall portion 24 is higher than that of the peripheral edge portion 26, it will collide with a pipe expanding device for expanding the heat transfer tube 12 during manufacturing. This is because.
  • the rigidity of the bending portion 21 in the plate thickness direction can be increased, and the bending portion 21 can be deformed in the plate thickness direction. Can be suppressed.
  • the notch 25 is formed by notching the end portion on the outer peripheral side when the bending portion 21 is bent into a V shape.
  • the V-shaped notch 25 may have a sharp tip or an R shape.
  • FIG. 13 is a perspective view showing the front heat exchanger 10a according to the embodiment of the present invention.
  • FIG. 14 is a first enlarged view of an essential part of the right side surface of the front heat exchanger 10a shown in FIG.
  • FIG. 15 is a second enlarged view of an essential part of the right side surface of the front heat exchanger 10a shown in FIG.
  • FIG. 16 is a third enlarged view of an essential part of the right side surface of the front heat exchanger 10a shown in FIG.
  • the front heat exchanger 10a has a bent shape in which the upper side is bent to the rear side with respect to the lower side, and the fitting protrusion 23 is fitted into the fitting hole 22.
  • the bending angle of the front heat exchanger 10a is fixed and the bent state is maintained. Since the front heat exchanger 10a is bent with the first sheet metal fixing plate 20a attached to the right side surface, the first sheet metal fixing plate 20a is also folded at the same time.
  • the notch 25 is formed, the stress applied to the first sheet metal fixing plate 20a when the front heat exchanger 10a is bent can be concentrated in the notch 25.
  • the wall portion 24 is provided to increase the rigidity of the bent portion 21 in the plate thickness direction, the rigidity in the direction along the plate surface also increases, and the front heat exchanger 10a becomes difficult to bend.
  • the notch 25 even if the wall portion 24 is provided and the rigidity of the bent portion 21 in the plate thickness direction is increased, it is possible to prevent the front heat exchanger 10a from being difficult to bend. Furthermore, by forming the notch 25, the center of the bending position, which tends to vary when the front heat exchanger 10a is bent, can be easily determined, so that the accuracy of the bending angle of the front heat exchanger 10a can be improved.
  • the wall portion 24 is formed at the end portion on the inner peripheral side when the folding portion 21 is folded. It is advisable to determine the depth of the notch 25 so that it can be bent as easily as before it is provided.
  • the indoor unit 100 of the air conditioner includes the plurality of fins 11 arranged in parallel with each other and the plurality of heat transfer tubes 12 penetrating orthogonally to the fins 11.
  • the heat exchanger 10 has the heat exchanger 10 and the housing 1 that accommodates the heat exchanger 10 therein.
  • the heat exchanger 10 is arranged on the front surface side of the housing 1 and the upper side is on the rear side with respect to the lower side.
  • the front heat exchanger 10a having a bent shape and a rear heat exchanger 10b arranged on the rear side of the housing 1 and connected to one end of the front heat exchanger 10a.
  • a first sheet metal fixing plate 20a for fixing the heat exchanger 10 to the inside of the housing 1 is attached to a side surface of the exchanger 10a, and the first sheet metal fixing plate 20a is provided more than other portions.
  • the width is narrow, and a bending portion that becomes a bending position when bending in the direction along the plate surface, and a wall portion 24 formed by bending the end portion of the bending portion 21 on the inner peripheral side at the time of bending, It is equipped with.
  • the first sheet metal fixed plate 20a has an end on the inner peripheral side when the bending portion 21 having a width narrower than other portions is bent.
  • the wall portion 24 is formed by being bent into a portion. Therefore, the rigidity of the first sheet metal fixed plate 20a in the plate thickness direction can be increased and the deformation of the first sheet metal fixed plate 20a can be suppressed, so that the bending angle of the front heat exchanger 10a is correct. It is possible to suppress that the angle cannot be maintained. As a result, it is possible to suppress variations in the performance of the air conditioner.
  • the first sheet metal fixing plate 20a has the V-shaped cutout 25 provided at the end portion on the outer peripheral side when the bending portion 21 is bent. It is equipped with.
  • the first sheet metal fixed plate 20a includes the cutout 25. Therefore, even if the wall portion 24 is provided to increase the rigidity of the bent portion 21 in the plate thickness direction, it is possible to prevent the front heat exchanger 10a from being difficult to bend. Further, since the first sheet metal fixing plate 20a is provided with the notch 25, it becomes easy to determine the center of the bending position that tends to vary when the front heat exchanger 10a is bent, and therefore the accuracy of the bending angle of the front heat exchanger 10a is high. Can be raised.
  • the first sheet metal fixed plate 20a includes the peripheral edge portion 26 provided at the peripheral edge of the hole into which the heat transfer tube 12 is inserted, and the wall portion 24. Has a height equal to or less than that of the peripheral portion 26.
  • the pipe expanding device that expands the heat transfer pipe 12 during manufacturing. It is possible to suppress the collision.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

This indoor unit of an air conditioner is provided with: a heat exchanger that has a plurality of fins aligned in parallel with gaps therebetween, and a plurality of heat transfer pipes that are perpendicular to and pass through the fins; and a housing that accommodates the heat exchanger therein. The heat exchanger is constituted by: a front surface heat exchanger that is disposed on the front surface side of the housing and that has a bent shape in which an upper side is bent toward the back surface side with respect to a lower side; and a back surface heat exchanger that is disposed on the back surface side of the housing and is connected to one end of the front surface heat exchanger. A sheet metal fixing plate for fixing the heat exchanger inside the housing is attached to a side surface of the front surface heat exchanger. The sheet metal fixing plate is provided with: a bending section, the width of which is narrower than other portions and that serves as a bending position when bending the sheet metal fixing plate along the plate surface; and a wall section that is bent and formed at an end section on the inner circumferential side when bending the bending section.

Description

空気調和機の室内ユニットAir conditioner indoor unit
　本発明は、壁掛け型の空気調和機の室内ユニットに関するものである。 The present invention relates to an indoor unit of a wall-mounted air conditioner.
　従来、筐体内に熱交換器とクロスフローファンとを有しており、熱交換器がクロスフローファンの上方を覆うように配置されている壁掛け型の空気調和機の室内ユニットがある（例えば、特許文献１参照）。 BACKGROUND ART Conventionally, there is a wall-mounted air conditioner indoor unit in which a heat exchanger and a cross flow fan are provided in a housing, and the heat exchanger is arranged so as to cover the cross flow fan (for example, See Patent Document 1).
　特許文献１では、熱交換器は、筐体の前面側に配置されて上側が下側に対して背面側へと屈曲した折り曲げ形状を有する前面熱交換器と、筐体の背面側に配置されて前面熱交換器の一端と接続された背面熱交換器と、で構成されている。そして、熱交換器は、その右側面に取り付けられた板金製の側板によって筐体内に固定されている。また、前面熱交換器は、右側面に側板が取り付けられた状態で折り曲げられ、側板に設けられている係合孔と係合突起とが係合することで、折り曲げ角度が保持されている。 In Patent Document 1, the heat exchanger is arranged on the front side of the housing and has a bent shape in which the upper side is bent to the rear side with respect to the lower side, and the heat exchanger is arranged on the rear side of the housing. And a rear heat exchanger connected to one end of the front heat exchanger. The heat exchanger is fixed in the housing by a side plate made of sheet metal attached to the right side surface of the heat exchanger. Further, the front heat exchanger is bent with the side plate attached to the right side surface, and the bending angle is maintained by engaging the engaging holes provided in the side plate with the engaging protrusions.
特開平９－２１０４５０号公報JP, 9-210450, A
　特許文献１は、側板に設けられている係合孔と係合突起とが係合することで、前面熱交換器の折り曲げ角度が保持されている。しかしながら、前面熱交換器が折り曲げられる際に一緒に折り曲げられる側板の折り曲げ部は、他の部分と比べて幅が狭いため、側板の板厚方向の剛性が低く、側板が成型されてから前面熱交換器を成形するまでに変形する恐れがある。そして、その場合は前面熱交換器の折り曲げ角度を正しい角度に保持できない。また、前面熱交換器の折り曲げ角度は空気調和機の性能に影響するため、前面熱交換器の折り曲げ角度を正しい角度に保持できないと、空気調和機の性能にばらつきが発生してしまうという課題があった。 In Patent Document 1, the bending angle of the front heat exchanger is maintained by the engagement holes and the engagement protrusions provided in the side plate engaging with each other. However, since the bent portion of the side plate that is bent together when the front heat exchanger is bent is narrower than other parts, the rigidity of the side plate in the plate thickness direction is low, and the front heat is not formed after the side plate is molded. There is a risk of deformation before the exchanger is molded. And in that case, the bending angle of the front heat exchanger cannot be maintained at a correct angle. Further, since the bending angle of the front heat exchanger affects the performance of the air conditioner, if the bending angle of the front heat exchanger cannot be maintained at a correct angle, there is a problem in that the performance of the air conditioner varies. there were.
　本発明は、以上のような課題を解決するためになされたもので、空気調和機の性能にばらつきが発生するのを抑制することができる空気調和機の室内ユニットを提供することを目的としている。 The present invention has been made to solve the above problems, and an object of the present invention is to provide an indoor unit of an air conditioner that can suppress variations in the performance of the air conditioner. ..
　本発明に係る空気調和機の室内ユニットは、互いに間隔を空けて平行に並べられた複数のフィンと、前記フィンに直交し貫通している複数の伝熱管と、を有する熱交換器と、前記熱交換器を内部に収容する筐体と、を備え、前記熱交換器は、前記筐体の前面側に配置されて上側が下側に対して背面側へと屈曲した折り曲げ形状を有する前面熱交換器と、前記筐体の背面側に配置されて前記前面熱交換器の一端と接続された背面熱交換器と、で構成されており、前記前面熱交換器の側面には、前記熱交換器を前記筐体の内部に固定する板金製固定板が取り付けられており、前記板金製固定板は、他の部分よりも幅が狭くなっており、板面に沿った方向に曲げる際の折り曲げ位置となる折り曲げ部と、前記折り曲げ部の折り曲げ時の内周側の端部に折り曲げられて形成された壁部と、を備えたものである。 An indoor unit of an air conditioner according to the present invention, a heat exchanger having a plurality of fins arranged in parallel at intervals and a plurality of heat transfer tubes penetrating orthogonally to the fins, A housing for accommodating a heat exchanger therein, wherein the heat exchanger is arranged on the front surface side of the housing and has a bent shape in which the upper side is bent to the rear side with respect to the lower side. The heat exchanger includes a heat exchanger and a rear heat exchanger arranged on the rear side of the housing and connected to one end of the front heat exchanger. The heat exchanger is provided on a side surface of the front heat exchanger. A fixing plate made of sheet metal for fixing the container to the inside of the housing is attached, and the fixing plate made of sheet metal has a width narrower than other portions, and is bent when bending in the direction along the plate surface. It is provided with a bent portion which is a position and a wall portion which is formed by being bent at an end portion on an inner peripheral side when the bent portion is bent.
　本発明に係る空気調和機の室内ユニットによれば、板金製固定板は、他の部分よりも幅が狭くなっている折り曲げ部の折り曲げ時の内周側の端部に折り曲げられて形成された壁部を備えている。そのため、板金製固定板の板厚方向の剛性を高めることができ、板金製固定板の変形を抑制することができるので、前面熱交換器の折り曲げ角度を正しい角度に保持できなくなるのを抑制できる。その結果、空気調和機の性能にばらつきが発生するのを抑制することができる。 According to the indoor unit of the air conditioner of the present invention, the sheet metal fixing plate is formed by being bent at the end portion on the inner peripheral side at the time of bending of the bending portion having a width narrower than other portions. It has a wall. Therefore, the rigidity of the sheet metal fixed plate in the plate thickness direction can be increased, and the deformation of the sheet metal fixed plate can be suppressed. Therefore, it is possible to prevent the bending angle of the front heat exchanger from being unable to be maintained at a correct angle. .. As a result, it is possible to suppress variations in the performance of the air conditioner.
本発明の実施の形態に係る空気調和機の室内ユニットを示す斜視図である。It is a perspective view which shows the indoor unit of the air conditioner which concerns on embodiment of this invention. 本発明の実施の形態に係る空気調和機の室内ユニットの縦断面を側面視した模式図である。It is the schematic diagram which looked at the vertical cross section of the indoor unit of the air conditioner which concerns on embodiment of this invention from the side. 本発明の実施の形態に係る空気調和機の室内ユニットを示す分解斜視図である。It is an exploded perspective view showing an indoor unit of an air harmony machine concerning an embodiment of the invention. 本発明の実施の形態に係る熱交換器を示す斜視図である。It is a perspective view showing a heat exchanger concerning an embodiment of the invention. 本発明の実施の形態に係る熱交換器に板金製固定板が取り付けられていない状態を側面視した模式図である。It is the side view which shows the state in which the sheet metal fixing plate is not attached to the heat exchanger which concerns on embodiment of this invention. 本発明の実施の形態に係る熱交換器に板金製固定板が取り付けられた状態を側面視した詳細図である。It is the detailed view which looked at the state where the sheet metal fixed board was attached to the heat exchanger concerning the embodiment of the present invention. 従来の第一の板金製固定板を示す斜視図である。It is a perspective view which shows the conventional 1st sheet metal fixed plate. 図７の破線部の拡大図である。It is an enlarged view of the broken line part of FIG. 従来の第一の板金製固定板が取り付けられた前面熱交換器の折り曲げ前の状態を側面視した模式図である。It is the schematic diagram which looked at the state before bending of the front heat exchanger to which the conventional 1st sheet metal fixing plate was attached from the side view. 従来の第一の板金製固定板が取り付けられた前面熱交換器の折り曲げ後の状態を側面視した模式図である。It is the schematic diagram which looked at the state after bending of the front heat exchanger to which the conventional 1st sheet metal fixing plate was attached from the side view. 本発明の実施の形態に係る第一の板金製固定板を示す斜視図である。It is a perspective view which shows the 1st sheet metal fixed plate which concerns on embodiment of this invention. 図１１の破線部の拡大図である。It is an enlarged view of the broken line part of FIG. 本発明の実施の形態に係る前面熱交換器を示す斜視図である。It is a perspective view which shows the front heat exchanger which concerns on embodiment of this invention. 図１３に示す前面熱交換器の右側面の要部を拡大した第一の図である。It is the 1st figure which expanded the principal part of the right side surface of the front heat exchanger shown in FIG. 図１３に示す前面熱交換器の右側面の要部を拡大した第二の図である。It is the 2nd figure which expanded the principal part of the right side of the front heat exchanger shown in FIG. 図１３に示す前面熱交換器の右側面の要部を拡大した第三の図である。It is the 3rd figure which expanded the principal part of the right side of the front heat exchanger shown in FIG.
　以下、本発明の実施の形態を図面に基づいて説明する。なお、以下に説明する実施の形態によって本発明が限定されるものではない。また、以下の図面では各構成部材の大きさの関係が実際のものとは異なる場合がある。 Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments described below. Further, in the following drawings, the size relationship of each component may be different from the actual one.
　また、以下の説明において、理解を容易にするために方向を表す用語（例えば「上」、「下」、「右」、「左」、「前」、「後」など）を適宜用いるが、これは説明のためのものであって、これらの用語は本願発明を限定するものではない。また、以下に説明する実施の形態では、空気調和機の室内ユニット１００を正面視した状態において、「上」、「下」、「右」、「左」、「前」、「後」などを使用する。 Further, in the following description, in order to facilitate understanding, terms indicating directions (for example, “up”, “down”, “right”, “left”, “front”, “rear”, etc. are used as appropriate. This is for illustration purposes only, and these terms do not limit the present invention. Further, in the embodiment described below, in a state where the indoor unit 100 of the air conditioner is viewed from the front, “upper”, “lower”, “right”, “left”, “front”, “rear”, etc. use.
　実施の形態．
　図１は、本発明の実施の形態に係る空気調和機の室内ユニット１００を示す斜視図である。図２は、本発明の実施の形態に係る空気調和機の室内ユニット１００の縦断面を側面視した模式図である。図３は、本発明の実施の形態に係る空気調和機の室内ユニット１００を示す分解斜視図である。 Embodiment.
FIG. 1 is a perspective view showing an indoor unit 100 of an air conditioner according to an embodiment of the present invention. FIG. 2 is a schematic view of a vertical cross section of the indoor unit 100 of the air conditioner according to the embodiment of the present invention as viewed from the side. FIG. 3 is an exploded perspective view showing the indoor unit 100 of the air conditioner according to the embodiment of the present invention.
　本実施の形態に係る空気調和機の室内ユニット１００は、室内の壁面などに据え付けられる壁掛け型である。室内ユニット１００は、前面筐体１ａと、前面筐体１ａの背面側に取り付けられた背面筐体１ｂと、からなる筐体１で外郭が構成されている。また、前面筐体１ａの前面側には、前面意匠パネル２が設けられている。この前面意匠パネル２は、設置業者およびユーザーなどが据付作業、清掃、および点検がしやすいように、上下方向に回動可能かつ取り外し可能に設けられている。 The indoor unit 100 of the air conditioner according to the present embodiment is a wall-mounted type that is installed on a wall surface in the room. The interior of the indoor unit 100 is configured by a casing 1 including a front casing 1a and a rear casing 1b attached to the rear side of the front casing 1a. A front design panel 2 is provided on the front side of the front housing 1a. The front design panel 2 is provided so as to be rotatable in the vertical direction and removable so that an installer, a user, and the like can easily perform installation work, cleaning, and inspection.
　前面筐体１ａの上部には、筐体１の内部に空気を吸い込む吸込口３が設けられており、また、前面筐体１ａの下部には、筐体１の内部から空気を吹き出す吹出口４が設けられている。また、吹出口４には、そこから吹き出される空気の上下方向の向きを調整する上下風向調整板５が設けられている。 A suction port 3 for sucking air into the housing 1 is provided in an upper portion of the front housing 1a, and an air outlet 4 for blowing air from the inside of the housing 1 is provided in a lower portion of the front housing 1a. Is provided. Further, the air outlet 4 is provided with a vertical airflow direction adjusting plate 5 that adjusts the vertical direction of the air blown from the air outlet 4.
　背面筐体１ｂには、空気の流れを発生させるクロスフローファン６と、クロスフローファン６を上方から覆うように配置され、クロスフローファン６から送風された空気と熱交換を行う熱交換器１０と、クロスフローファン６の駆動回路などが実装された電気品箱７と、が固定され、筐体１の内部に収容されている。 A crossflow fan 6 for generating a flow of air, and a heat exchanger 10 arranged to cover the crossflow fan 6 from above and performing heat exchange with the air blown from the crossflow fan 6 are provided in the rear housing 1b. The electrical component box 7 on which the drive circuit of the cross flow fan 6 and the like are mounted are fixed and housed inside the housing 1.
　熱交換器１０はフィンチューブ型であり、互いに間隔を空けて平行に並べられた、つまり積層された複数のフィン１１と、これらフィン１１に直交し貫通している複数の伝熱管１２とを有している。また、熱交換器１０は、筐体１の前面側に配置されて上側が下側に対して背面側へと屈曲した折り曲げ形状を有する前面熱交換器１０ａと、筐体１の背面側に配置されて前面熱交換器１０ａの一端と接続された背面熱交換器１０ｂと、で構成されている。 The heat exchanger 10 is a fin-tube type, and has a plurality of fins 11 arranged in parallel with each other with a space therebetween, that is, a plurality of fins 11 and a plurality of heat transfer tubes 12 that penetrate through the fins 11 at right angles. doing. The heat exchanger 10 is arranged on the front side of the housing 1, and the front heat exchanger 10a has a bent shape in which the upper side is bent to the rear side with respect to the lower side, and the heat exchanger 10 is arranged on the rear side of the housing 1. And a rear surface heat exchanger 10b connected to one end of the front surface heat exchanger 10a.
　ここで、本実施の形態に係る空気調和機の室内ユニット１００の動作について簡単に説明する。 Here, the operation of the indoor unit 100 of the air conditioner according to the present embodiment will be briefly described.
　空気調和機の運転が開始されるとクロスフローファン６が回転駆動し、それによって発生した空気の流れにより吸込口３から室内空気が筐体１の内部に吸い込まれる。その吸い込まれた室内空気は、熱交換器１０を通過する際に熱交換器１０にて熱交換し、冷気または暖気となって、吹出口４から室内へ吹き出される。このとき、吹出口４に設けられた上下風向調整板５が回動することで、吹出口４から吹き出される冷気または暖気の上下方向の向きが調整される。 When the operation of the air conditioner is started, the crossflow fan 6 is rotationally driven, and the air flow generated thereby causes the indoor air to be sucked into the housing 1 through the suction port 3. The sucked indoor air is heat-exchanged in the heat exchanger 10 when passing through the heat exchanger 10, becomes cold air or warm air, and is blown out into the room from the air outlet 4. At this time, the vertical airflow direction adjusting plate 5 provided at the air outlet 4 is rotated to adjust the vertical direction of the cool air or the warm air blown out from the air outlet 4.
　図４は、本発明の実施の形態に係る熱交換器１０を示す斜視図である。図５は、本発明の実施の形態に係る熱交換器１０に板金製固定板２０が取り付けられていない状態を側面視した模式図である。図６は、本発明の実施の形態に係る熱交換器１０に板金製固定板２０が取り付けられた状態を側面視した詳細図である。 FIG. 4 is a perspective view showing the heat exchanger 10 according to the embodiment of the present invention. FIG. 5 is a schematic side view of the heat exchanger 10 according to the embodiment of the present invention in which the sheet metal fixed plate 20 is not attached. FIG. 6 is a detailed view of the heat exchanger 10 according to the embodiment of the present invention with the fixing plate 20 made of sheet metal attached to the side view.
　図４～図６に示すように、熱交換器１０の左側面には、熱交換器１０を筐体１の内部、詳しくは背面筐体１ｂに固定するための樹脂製固定板１４が取り付けられている。また、熱交換器１０の右側面には、熱交換器１０を筐体１の内部、詳しくは背面筐体１ｂに固定するための板金製固定板２０が取り付けられている。この板金製固定板２０は、前面熱交換器１０ａに取り付けられる第一の板金製固定板２０ａと、背面熱交換器１０ｂに取り付けられる第二の板金製固定板２０ｂで構成されている。 As shown in FIGS. 4 to 6, a resin fixing plate 14 for fixing the heat exchanger 10 to the inside of the housing 1, more specifically, the rear housing 1b is attached to the left side surface of the heat exchanger 10. ing. Further, on the right side surface of the heat exchanger 10, a metal plate fixing plate 20 for fixing the heat exchanger 10 to the inside of the housing 1, specifically, the rear housing 1b is attached. The sheet metal fixed plate 20 is composed of a first sheet metal fixed plate 20a attached to the front heat exchanger 10a and a second sheet metal fixed plate 20b attached to the rear heat exchanger 10b.
　図６に示すように、板金製固定板２０は熱交換器１０の右側面にネジ３０で固定されることにより、取り付けられている。詳しくは、第一の板金製固定板２０ａは前面熱交換器１０ａの右側面にネジ３０で固定されており、第二の板金製固定板２０ｂは背面熱交換器１０ｂの右側面にネジ３０で固定されている。 As shown in FIG. 6, the sheet metal fixing plate 20 is attached to the right side surface of the heat exchanger 10 by being fixed with a screw 30. Specifically, the first sheet metal fixed plate 20a is fixed to the right side surface of the front heat exchanger 10a with a screw 30, and the second sheet metal fixed plate 20b is fixed to the right side surface of the rear heat exchanger 10b with a screw 30. It is fixed.
　熱交換器１０の左側面は、伝熱管１２のＵ字部が配置されており、Ｕ字管を接続するロウ付けが不要である。そのため、熱交換器１０の左側面に取り付けられる樹脂製固定板１４は、樹脂で構成されている。一方、熱交換器１０の右側面は、伝熱管１２の端部にＵ字管を接続してロウ付けが必要である。そのため、熱交換器１０の右側面に取り付けられる板金製固定板２０は、板金で構成されている。 The U-shaped portion of the heat transfer tube 12 is arranged on the left side surface of the heat exchanger 10, and brazing for connecting the U-shaped tube is not necessary. Therefore, the resin fixing plate 14 attached to the left side surface of the heat exchanger 10 is made of resin. On the other hand, the right side surface of the heat exchanger 10 requires brazing by connecting a U-shaped tube to the end of the heat transfer tube 12. Therefore, the sheet metal fixed plate 20 attached to the right side surface of the heat exchanger 10 is made of sheet metal.
　図７は、従来の第一の板金製固定板４０ａを示す斜視図である。図８は、図７の破線部の拡大図である。図９は、従来の第一の板金製固定板４０ａが取り付けられた前面熱交換器１０ａの折り曲げ前の状態を側面視した模式図である。図１０は、従来の第一の板金製固定板４０ａが取り付けられた前面熱交換器１０ａの折り曲げ後の状態を側面視した模式図である。 FIG. 7 is a perspective view showing a conventional first sheet metal fixed plate 40a. FIG. 8 is an enlarged view of the broken line portion of FIG. 7. FIG. 9 is a side view schematically showing a state before bending of the front heat exchanger 10a to which the conventional first sheet metal fixing plate 40a is attached. FIG. 10: is the schematic diagram which looked at the state after bending of the front heat exchanger 10a to which the conventional 1st sheet metal fixed plate 40a was attached from the side view.
　従来の第一の板金製固定板４０ａは、図７および図８に示すように、ほぼ長方形状の平板である。この第一の板金製固定板４０ａは、他の部分よりも幅が狭くなっており、板面に沿った方向に曲げる際の折り曲げ位置となる折り曲げ部４１と、嵌合穴部４２と、嵌合穴部４２に嵌め合わされる嵌合突起部４３とを有している。なお、折り曲げ部４１は、第一の板金製固定板４０ａの長手側の両側面の一部が切り欠かれることにより形成されている。 The conventional first sheet metal fixing plate 40a is a substantially rectangular flat plate as shown in FIGS. 7 and 8. The first fixing plate 40a made of sheet metal has a width narrower than other portions, and has a bending portion 41 which is a bending position when bending in a direction along the plate surface, a fitting hole portion 42, and a fitting hole portion 42. It has a fitting projection 43 fitted into the fitting hole 42. The bent portion 41 is formed by cutting out a part of both side surfaces on the longitudinal side of the first sheet metal fixed plate 40a.
　そして、図９に示すように、第一の板金製固定板４０ａが前面熱交換器１０ａの右側面に取り付けられた状態で、図１０に示すように、折り曲げ部４１を中心に第一の板金製固定板４０ａが前面熱交換器１０ａと同時に、板面に沿った方向に折り曲げられる。そして、嵌合穴部４２に嵌合突起部４３が嵌め合わされることで、前面熱交換器１０ａの折り曲げ角度が固定され、折り曲げ状態が保持されるようになっている。 Then, as shown in FIG. 9, with the first sheet metal fixed plate 40a attached to the right side surface of the front heat exchanger 10a, as shown in FIG. The manufactured fixed plate 40a is bent in the direction along the plate surface at the same time as the front heat exchanger 10a. Then, by fitting the fitting protrusion 43 into the fitting hole 42, the bending angle of the front heat exchanger 10a is fixed, and the bent state is maintained.
　上記の通り、第一の板金製固定板４０ａの折り曲げ位置となる折り曲げ部４１が、他の部分よりも幅が狭くなっているが、これは、前面熱交換器１０ａを折り曲げる際に、前面熱交換器１０ａを折り曲げやすくするためである。このように折り曲げ部４１を設けることで、前面熱交換器１０ａを折り曲げやすくすることができるが、折り曲げ部４１は他の部分よりも幅が狭くなっているため、第一の板金製固定板４０ａの板厚方向の剛性が他の部分よりも低く、折り曲げ部４１は板厚方向に変形しやすくなっている。 As described above, the bending portion 41, which is the bending position of the first sheet metal fixing plate 40a, has a narrower width than the other portions. This is because when the front heat exchanger 10a is bent, the front heat This is for facilitating bending of the exchanger 10a. By providing the bent portion 41 in this manner, the front heat exchanger 10a can be easily bent, but since the bent portion 41 is narrower in width than other portions, the first sheet metal fixing plate 40a is formed. The rigidity in the plate thickness direction is lower than that in other portions, and the bent portion 41 is easily deformed in the plate thickness direction.
　そのため、従来では、第一の板金製固定板４０ａを成型した後、前面熱交換器１０ａの右側面に取り付けて折り曲げて前面熱交換器１０ａを成形するまでに、第一の板金製固定板４０ａが折り曲げ部４１で板厚方向に変形してしまう恐れがある。そして、第一の板金製固定板４０ａが折り曲げ部４１で板厚方向に変形した状態で前面熱交換器１０ａを折り曲げようとしても、前面熱交換器１０ａの折り曲げが困難であったり、前面熱交換器１０ａを折り曲げられたとしても折り曲げ角度がばらついてしまったりする。そうすると、熱交換器１０での熱交換効率が低下するため、空気調和機の性能が低下してしまう。 Therefore, conventionally, after the first sheet metal fixed plate 40a is molded, the first sheet metal fixed plate 40a is mounted before being attached to the right side surface of the front heat exchanger 10a and bent to form the front heat exchanger 10a. May be deformed in the plate thickness direction at the bent portion 41. Then, even if the front heat exchanger 10a is tried to be bent with the first sheet metal fixing plate 40a deformed in the plate thickness direction at the bending portion 41, it is difficult to bend the front heat exchanger 10a, or the front heat exchanger 10a is difficult to bend. Even if the container 10a is bent, the bending angle may vary. Then, since the heat exchange efficiency in the heat exchanger 10 is reduced, the performance of the air conditioner is reduced.
　図１１は、本発明の実施の形態に係る第一の板金製固定板２０ａを示す斜視図である。図１２は、図１１の破線部の拡大図である。 FIG. 11 is a perspective view showing a first sheet metal fixed plate 20a according to the embodiment of the present invention. FIG. 12 is an enlarged view of the broken line portion of FIG.
　そこで、本実施の形態に係る第一の板金製固定板２０ａでは、図１１および図１２に示す構成となっている。第一の板金製固定板２０ａは、ほぼ長方形状の平板である。この第一の板金製固定板２０ａは、他の部分よりも幅が狭くなっており、板面に沿った方向に曲げる際の折り曲げ位置となる折り曲げ部２１と、嵌合穴部２２と、嵌合穴部２２に嵌め合わされる嵌合突起部２３とを有している。なお、折り曲げ部２１は、第一の板金製固定板２０ａの長手側の両側面の一部が切り欠かれることにより形成されている。 Therefore, the first sheet metal fixed plate 20a according to the present embodiment has the configuration shown in FIGS. 11 and 12. The first sheet metal fixing plate 20a is a substantially rectangular flat plate. The width of the first fixing plate 20a made of sheet metal is narrower than that of the other portions, and the bending portion 21 is a bending position when bending in the direction along the plate surface, the fitting hole portion 22, and the fitting hole portion 22. It has a fitting projection portion 23 fitted in the fitting hole portion 22. The bent portion 21 is formed by cutting out a part of both side surfaces on the longitudinal side of the first sheet metal fixed plate 20a.
　さらに、第一の板金製固定板２０ａは、折り曲げ部２１の折り曲げ時の内周側の端部に設けられた壁部２４と、折り曲げ部２１の折り曲げ時の外周側の端部に設けられた切り欠き２５とを有している。なお、嵌合穴部２２と嵌合突起部２３とが設けられている位置は、反対でもよい。ここで、折り曲げ部２１の折り曲げ時の内周側の端部および外周側の端部とは、第一の板金製固定板４０ａが前面熱交換器１０ａの右側面に取り付けられた状態で折り曲げられた時の折り曲げ部２１の内周側の端部および外周側の端部のことである。 Further, the first fixing plate 20a made of sheet metal is provided at the wall portion 24 provided at the end portion on the inner peripheral side when the bending portion 21 is bent, and at the end portion on the outer peripheral side when the bending portion 21 is bent. It has a notch 25. The positions where the fitting hole 22 and the fitting protrusion 23 are provided may be opposite. Here, the end portion on the inner peripheral side and the end portion on the outer peripheral side at the time of bending the bent portion 21 are bent in a state where the first sheet metal fixing plate 40a is attached to the right side surface of the front heat exchanger 10a. It is the end on the inner peripheral side and the end on the outer peripheral side of the bent portion 21 when it is opened.
　壁部２４は、折り曲げ部２１の折り曲げ時の内周側の端部が外側に曲げられて形成されており、その厚さは板厚であり、その外側への突出量（以下、高さと称する）は伝熱管１２が挿入される孔の周縁に設けられた周縁部２６と同じかそれ以下である。なお、壁部２４の折り曲げ角度は、例えば９０度であるが、それに限定されない。ここで、外側とは、第一の板金製固定板２０ａを前面熱交換器１０ａの右側面に取り付けた際の外側のことであり、以下も同様とする。 The wall portion 24 is formed by bending the end portion on the inner peripheral side at the time of bending the bending portion 21 to the outside, the thickness thereof is the plate thickness, and the amount of protrusion to the outside (hereinafter referred to as height). ) Is equal to or less than the peripheral edge portion 26 provided on the peripheral edge of the hole into which the heat transfer tube 12 is inserted. The bending angle of the wall portion 24 is, for example, 90 degrees, but is not limited thereto. Here, the outer side is the outer side when the first sheet metal fixed plate 20a is attached to the right side surface of the front heat exchanger 10a, and the same applies hereinafter.
　壁部２４を外側に折り曲げているのは、壁部２４が内側に折り曲げられているとフィン１１にぶつかってしまうためである。また、壁部２４の高さを周縁部２６と同じかそれ以下とするのは、壁部２４の高さを周縁部２６より高くすると製造時に伝熱管１２を拡管する拡管用装置とぶつかってしまうためである。 The reason why the wall portion 24 is bent outward is that if the wall portion 24 is bent inward, it will hit the fin 11. Further, the height of the wall portion 24 is equal to or less than that of the peripheral edge portion 26. If the height of the wall portion 24 is higher than that of the peripheral edge portion 26, it will collide with a pipe expanding device for expanding the heat transfer tube 12 during manufacturing. This is because.
　このように、折り曲げ部２１の折り曲げ時の内周側の端部に壁部２４を設けることで、折り曲げ部２１の板厚方向の剛性を高めることができ、折り曲げ部２１の板厚方向の変形を抑制することができる。 In this way, by providing the wall portion 24 at the end portion on the inner peripheral side when the bending portion 21 is bent, the rigidity of the bending portion 21 in the plate thickness direction can be increased, and the bending portion 21 can be deformed in the plate thickness direction. Can be suppressed.
　また、切り欠き２５は、折り曲げ部２１の折り曲げ時の外周側の端部をＶ字形状に切り欠いて形成されている。なお、Ｖ字形状の切り欠き２５は、その先端がとがった形状でもよいし、Ｒ形状でもよい。 Further, the notch 25 is formed by notching the end portion on the outer peripheral side when the bending portion 21 is bent into a V shape. The V-shaped notch 25 may have a sharp tip or an R shape.
　図１３は、本発明の実施の形態に係る前面熱交換器１０ａを示す斜視図である。図１４は、図１３に示す前面熱交換器１０ａの右側面の要部を拡大した第一の図である。図１５は、図１３に示す前面熱交換器１０ａの右側面の要部を拡大した第二の図である。図１６は、図１３に示す前面熱交換器１０ａの右側面の要部を拡大した第三の図である。 FIG. 13 is a perspective view showing the front heat exchanger 10a according to the embodiment of the present invention. FIG. 14 is a first enlarged view of an essential part of the right side surface of the front heat exchanger 10a shown in FIG. FIG. 15 is a second enlarged view of an essential part of the right side surface of the front heat exchanger 10a shown in FIG. FIG. 16 is a third enlarged view of an essential part of the right side surface of the front heat exchanger 10a shown in FIG.
　図１３～図１４に示すように、前面熱交換器１０ａは上側が下側に対して背面側へと屈曲した折り曲げ形状を有しており、嵌合穴部２２に嵌合突起部２３が嵌め合わされることで、前面熱交換器１０ａの折り曲げ角度が固定され、折り曲げ状態が保持されている。なお、前面熱交換器１０ａは、右側面に第一の板金製固定板２０ａが取り付けられた状態で折り曲げられるため、第一の板金製固定板２０ａも同時に折り曲げられる。 As shown in FIGS. 13 to 14, the front heat exchanger 10a has a bent shape in which the upper side is bent to the rear side with respect to the lower side, and the fitting protrusion 23 is fitted into the fitting hole 22. By being combined, the bending angle of the front heat exchanger 10a is fixed and the bent state is maintained. Since the front heat exchanger 10a is bent with the first sheet metal fixing plate 20a attached to the right side surface, the first sheet metal fixing plate 20a is also folded at the same time.
　このとき、切り欠き２５が形成されていることで、前面熱交換器１０ａの折り曲げ時に第一の板金製固定板２０ａにかかる応力をこの切り欠き２５に集中させることができる。ここで、壁部２４を設けて折り曲げ部２１の板厚方向の剛性を高めると、板面に沿った方向の剛性も高くなり、前面熱交換器１０ａが折り曲げにくくなる。 At this time, since the notch 25 is formed, the stress applied to the first sheet metal fixing plate 20a when the front heat exchanger 10a is bent can be concentrated in the notch 25. Here, when the wall portion 24 is provided to increase the rigidity of the bent portion 21 in the plate thickness direction, the rigidity in the direction along the plate surface also increases, and the front heat exchanger 10a becomes difficult to bend.
　そこで、切り欠き２５を形成することで、壁部２４を設けて折り曲げ部２１の板厚方向の剛性を高めたとしても、前面熱交換器１０ａが折り曲げにくくなるのを抑制することができる。さらに、切り欠き２５を形成することで、前面熱交換器１０ａを折り曲げる際にばらつきやすい折り曲げ位置の中心が決まりやすくなるため、前面熱交換器１０ａの折り曲げ角度の精度を上げることができる。 Therefore, by forming the notch 25, even if the wall portion 24 is provided and the rigidity of the bent portion 21 in the plate thickness direction is increased, it is possible to prevent the front heat exchanger 10a from being difficult to bend. Furthermore, by forming the notch 25, the center of the bending position, which tends to vary when the front heat exchanger 10a is bent, can be easily determined, so that the accuracy of the bending angle of the front heat exchanger 10a can be improved.
　なお、切り欠き２５は深い方が第一の板金製固定板２０ａを折り曲げやすくなるが、その分強度としては弱くなるため、折り曲げ部２１の折り曲げ時の内周側の端部に壁部２４を設ける前と同じ程度の折り曲げやすさとなるように切り欠き２５の深さを決定するとよい。 The deeper the notch 25 is, the easier it is to fold the first sheet metal fixing plate 20a, but the strength is weaker accordingly. Therefore, the wall portion 24 is formed at the end portion on the inner peripheral side when the folding portion 21 is folded. It is advisable to determine the depth of the notch 25 so that it can be bent as easily as before it is provided.
　以上、本実施の形態に係る空気調和機の室内ユニット１００は、互いに間隔を空けて平行に並べられた複数のフィン１１と、フィン１１に直交し貫通している複数の伝熱管１２と、を有する熱交換器１０と、熱交換器１０を内部に収容する筐体１と、を備え、熱交換器１０は、筐体１の前面側に配置されて上側が下側に対して背面側へと屈曲した折り曲げ形状を有する前面熱交換器１０ａと、筐体１の背面側に配置されて前面熱交換器１０ａの一端と接続された背面熱交換器１０ｂと、で構成されており、前面熱交換器１０ａの側面には、熱交換器１０を筐体１の内部に固定する第一の板金製固定板２０ａが取り付けられており、第一の板金製固定板２０ａは、他の部分よりも幅が狭くなっており、板面に沿った方向に曲げる際の折り曲げ位置となる折り曲げ部と、折り曲げ部２１の折り曲げ時の内周側の端部に折り曲げられて形成された壁部２４と、を備えたものである。 As described above, the indoor unit 100 of the air conditioner according to the present embodiment includes the plurality of fins 11 arranged in parallel with each other and the plurality of heat transfer tubes 12 penetrating orthogonally to the fins 11. The heat exchanger 10 has the heat exchanger 10 and the housing 1 that accommodates the heat exchanger 10 therein. The heat exchanger 10 is arranged on the front surface side of the housing 1 and the upper side is on the rear side with respect to the lower side. The front heat exchanger 10a having a bent shape and a rear heat exchanger 10b arranged on the rear side of the housing 1 and connected to one end of the front heat exchanger 10a. A first sheet metal fixing plate 20a for fixing the heat exchanger 10 to the inside of the housing 1 is attached to a side surface of the exchanger 10a, and the first sheet metal fixing plate 20a is provided more than other portions. The width is narrow, and a bending portion that becomes a bending position when bending in the direction along the plate surface, and a wall portion 24 formed by bending the end portion of the bending portion 21 on the inner peripheral side at the time of bending, It is equipped with.
　本実施の形態に係る空気調和機の室内ユニット１００によれば、第一の板金製固定板２０ａは、他の部分よりも幅が狭くなっている折り曲げ部２１の折り曲げ時の内周側の端部に折り曲げられて形成された壁部２４を備えている。そのため、第一の板金製固定板２０ａの板厚方向の剛性を高めることができ、第一の板金製固定板２０ａの変形を抑制することができるので、前面熱交換器１０ａの折り曲げ角度を正しい角度に保持できなくなるのを抑制できる。その結果、空気調和機の性能にばらつきが発生するのを抑制することができる。 According to the indoor unit 100 for an air conditioner according to the present embodiment, the first sheet metal fixed plate 20a has an end on the inner peripheral side when the bending portion 21 having a width narrower than other portions is bent. The wall portion 24 is formed by being bent into a portion. Therefore, the rigidity of the first sheet metal fixed plate 20a in the plate thickness direction can be increased and the deformation of the first sheet metal fixed plate 20a can be suppressed, so that the bending angle of the front heat exchanger 10a is correct. It is possible to suppress that the angle cannot be maintained. As a result, it is possible to suppress variations in the performance of the air conditioner.
　また、本実施の形態に係る空気調和機の室内ユニット１００において、第一の板金製固定板２０ａは、折り曲げ部２１の折り曲げ時の外周側の端部に設けられたＶ字形状の切り欠き２５を備えたものである。 Further, in the indoor unit 100 of the air conditioner according to the present embodiment, the first sheet metal fixing plate 20a has the V-shaped cutout 25 provided at the end portion on the outer peripheral side when the bending portion 21 is bent. It is equipped with.
　本実施の形態に係る空気調和機の室内ユニット１００によれば、第一の板金製固定板２０ａが切り欠き２５を備えている。そのため、壁部２４を設けて折り曲げ部２１の板厚方向の剛性を高めたとしても、前面熱交換器１０ａが折り曲げにくくなるのを抑制することができる。さらに、第一の板金製固定板２０ａが切り欠き２５を備えることで、前面熱交換器１０ａを折り曲げる際にばらつきやすい折り曲げ位置の中心が決まりやすくなるため、前面熱交換器１０ａの折り曲げ角度の精度を上げることができる。 According to the indoor unit 100 for an air conditioner according to the present embodiment, the first sheet metal fixed plate 20a includes the cutout 25. Therefore, even if the wall portion 24 is provided to increase the rigidity of the bent portion 21 in the plate thickness direction, it is possible to prevent the front heat exchanger 10a from being difficult to bend. Further, since the first sheet metal fixing plate 20a is provided with the notch 25, it becomes easy to determine the center of the bending position that tends to vary when the front heat exchanger 10a is bent, and therefore the accuracy of the bending angle of the front heat exchanger 10a is high. Can be raised.
　また、本実施の形態に係る空気調和機の室内ユニット１００において、第一の板金製固定板２０ａは、伝熱管１２が挿入される孔の周縁に設けられた周縁部２６を備え、壁部２４の高さは、周縁部２６と同じまたはそれ以下である。 In addition, in the indoor unit 100 for an air conditioner according to the present embodiment, the first sheet metal fixed plate 20a includes the peripheral edge portion 26 provided at the peripheral edge of the hole into which the heat transfer tube 12 is inserted, and the wall portion 24. Has a height equal to or less than that of the peripheral portion 26.
　本実施の形態に係る空気調和機の室内ユニット１００によれば、壁部２４の高さは、周縁部２６と同じまたはそれ以下となっているため、製造時に伝熱管１２を拡管する拡管用装置とぶつかってしまうのを抑制することができる。 According to the indoor unit 100 for an air conditioner according to the present embodiment, since the height of the wall portion 24 is equal to or less than that of the peripheral edge portion 26, the pipe expanding device that expands the heat transfer pipe 12 during manufacturing. It is possible to suppress the collision.
　１　筐体、１ａ　前面筐体、１ｂ　背面筐体、２　前面意匠パネル、３　吸込口、４　吹出口、５　上下風向調整板、６　クロスフローファン、７　電気品箱、１０　熱交換器、１０ａ　前面熱交換器、１０ｂ　背面熱交換器、１１　フィン、１２　伝熱管、１４　樹脂製固定板、２０　板金製固定板、２０ａ　第一の板金製固定板、２０ｂ　第二の板金製固定板、２１　折り曲げ部、２２　嵌合穴部、２３　嵌合突起部、２４　壁部、２５　切り欠き、２６　周縁部、３０　ネジ、４０ａ　第一の板金製固定板、４１　折り曲げ部、４２　嵌合穴部、４３　嵌合突起部、１００　室内ユニット。 1 case, 1a front case, 1b rear case, 2 front design panel, 3 inlet, 4 outlet, 5 up/down air direction adjusting plate, 6 cross flow fan, 7 electrical box, 10 heat exchanger, 10a front Heat exchanger, 10b rear heat exchanger, 11 fins, 12 heat transfer tubes, 14 resin fixing plate, 20 sheet metal fixing plate, 20a first sheet metal fixing plate, 20b second sheet metal fixing plate, 21 bent portion , 22, fitting hole, 23 fitting protrusion, 24 wall, 25 notch, 26 peripheral part, 30 screw, 40a first sheet metal fixing plate, 41 bent part, 42 fitting hole part, 43 fitting Protrusion, 100 indoor unit.

Claims (3)

  1. 　互いに間隔を空けて平行に並べられた複数のフィンと、前記フィンに直交し貫通している複数の伝熱管と、を有する熱交換器と、
    　前記熱交換器を内部に収容する筐体と、を備え、
    　前記熱交換器は、
    　前記筐体の前面側に配置されて上側が下側に対して背面側へと屈曲した折り曲げ形状を有する前面熱交換器と、前記筐体の背面側に配置されて前記前面熱交換器の一端と接続された背面熱交換器と、で構成されており、
    　前記前面熱交換器の側面には、前記熱交換器を前記筐体の内部に固定する板金製固定板が取り付けられており、
    　前記板金製固定板は、
    　他の部分よりも幅が狭くなっており、板面に沿った方向に曲げる際の折り曲げ位置となる折り曲げ部と、
    　前記折り曲げ部の折り曲げ時の内周側の端部に折り曲げられて形成された壁部と、を備えた
    　空気調和機の室内ユニット。     A heat exchanger having a plurality of fins arranged in parallel with each other at intervals, and a plurality of heat transfer tubes penetrating orthogonally to the fins,
    A housing that houses the heat exchanger therein,
    The heat exchanger is
    A front heat exchanger arranged on the front side of the housing and having a bent shape in which the upper side is bent to the rear side with respect to the lower side; and one end of the front heat exchanger arranged on the rear side of the housing. And a rear heat exchanger connected to
    A fixing plate made of sheet metal for fixing the heat exchanger to the inside of the housing is attached to a side surface of the front heat exchanger,
    The fixed plate made of sheet metal,
    The width is narrower than other parts, and the bending part that becomes the bending position when bending in the direction along the plate surface,
    An indoor unit of an air conditioner, comprising: a wall portion formed by being bent at an end portion on an inner peripheral side when the bending portion is bent.
  2. 　前記板金製固定板は、
    　前記折り曲げ部の折り曲げ時の外周側の端部に設けられたＶ字形状の切り欠きを備えた
    　請求項１に記載の空気調和機の室内ユニット。     The fixed plate made of sheet metal,
    The indoor unit of the air conditioner according to claim 1, further comprising a V-shaped cutout provided at an end portion on the outer peripheral side when the bending portion is bent.
  3. 　前記板金製固定板は、
    　前記伝熱管が挿入される孔の周縁に設けられた周縁部を備え、
    　前記壁部の高さは、前記周縁部と同じまたはそれ以下である
    　請求項１または２に記載の空気調和機の室内ユニット。     The fixed plate made of sheet metal,
    A peripheral portion provided on the peripheral edge of the hole into which the heat transfer tube is inserted;
    The indoor unit of the air conditioner according to claim 1 or 2, wherein a height of the wall portion is equal to or less than that of the peripheral portion.
PCT/JP2019/002256 2019-01-24 2019-01-24 Indoor unit of air conditioner WO2020152823A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04270892A (en) * 1991-02-04 1992-09-28 Mitsubishi Electric Corp Heat exchanger
JPH066954U (en) * 1992-06-17 1994-01-28 東洋ラジエーター株式会社 Air conditioner heat exchanger
JPH09210450A (en) * 1996-01-30 1997-08-12 Mitsubishi Heavy Ind Ltd Air conditioner
JP2001201170A (en) * 2000-01-24 2001-07-27 Mitsubishi Heavy Ind Ltd Method of manufacturing indoor unit, and indoor unit and air conditioner
JP2014047995A (en) * 2012-09-03 2014-03-17 Hitachi Appliances Inc Outdoor unit of air conditioner

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JPH04270892A (en) * 1991-02-04 1992-09-28 Mitsubishi Electric Corp Heat exchanger
JPH066954U (en) * 1992-06-17 1994-01-28 東洋ラジエーター株式会社 Air conditioner heat exchanger
JPH09210450A (en) * 1996-01-30 1997-08-12 Mitsubishi Heavy Ind Ltd Air conditioner
JP2001201170A (en) * 2000-01-24 2001-07-27 Mitsubishi Heavy Ind Ltd Method of manufacturing indoor unit, and indoor unit and air conditioner
JP2014047995A (en) * 2012-09-03 2014-03-17 Hitachi Appliances Inc Outdoor unit of air conditioner

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