JP2018194248A - Ceiling-embedded duct type air conditioner - Google Patents

Abstract

To enable an indoor machine to be installed on an attic of a gable roof so as to avoid climbing beams, the indoor machine having a length longer than an interval between the climbing beams.SOLUTION: When an indoor machine 10A with a heat exchange unit 20 and a blower unit 30 separate from each other is installed on an attic of a gable roof where a plurality of climbing beams 3 is provided in parallel between a ridge beam 1 and a pole plate 2, at a support tool 27 supporting an end part of a heat exchanger 25 in a housing 20A of the heat exchange unit 20, a beam avoiding part 28 is integrally provided, the beam avoiding part forming a beam insertion groove 40 into which a portion of the climbing beam is inserted at a corner part on an upper side of the housing 20A.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a ceiling-embedded duct type air conditioner in which a heat exchange unit and a blower unit are divided, and more specifically, a ceiling-embedded duct suitable for being placed in a relatively narrow ceiling behind a triangular roof. This relates to a type air conditioner.

  The ceiling-embedded duct type air conditioner is installed in the ceiling (attic) of the indoor unit, but is included in the indoor unit 10 as shown in FIG. The heat exchange unit 20 and the blower unit 30 are divided, and these units 20 and 30 are separately carried into the ceiling and assembled (see, for example, Patent Document 1).

  By the way, in the case of a triangular roof as shown in FIG. 9, the heat exchange unit 20 and the blower unit 30 may not be connected and assembled behind the ceiling due to the beam structure.

  The triangular roof is bridged diagonally between the purlin 1 arranged on the top, the pair of eaves 2 and 2 arranged in parallel to the skirt and parallel to the skirt 1, and the purlin 1 and eaves 2 and 2. It has a triangular shape including a climbing beam (rafter) 3 and a shed beam 4 spanned between the eaves beams 2 and 2, and the interval between the climbing beams 3 is generally defined as 600 mm (or more). In addition, the width of the climbing beam 3 is specified to be about 20 to 50 mm in the case of 2 × 4 method (wooden framed wall method).

  In recent years, high air conditioning capability has been demanded, and in association with this, large heat exchangers and blowers are used. Therefore, both the heat exchange unit 20 and the blower unit 30 become large, and these units 20 and 30 are connected. The length (length along the ventilation direction) L of the indoor unit 10 is, for example, 950 mm, and the distance between the climbing beams 3 on the triangular roof exceeds 600 mm. Therefore, the climbing beam 3 becomes an obstacle, and the heat exchange unit 20 and the blower unit 30 Cannot be connected (connected).

  For this reason, the indoor unit 10 that has a length L of less than 600 mm and fits between the climbing beams 3 and 3 is adopted, but if one unit has insufficient air conditioning capacity, a second unit is required, and the cost is reduced accordingly. There is a problem that the installation work becomes complicated as the height increases.

  Note that Patent Document 2 discloses a ceiling buried structure in which a fan and a heat exchanger are arranged in order from the back side to the front side in a ventilation path formed from the back side to the front side formed in the casing. In a built-in duct type indoor unit, an outer shape protruding upward so that a portion of the casing near the front surface where the heat exchanger is disposed is larger than the height dimension of the rear surface portion where the fan is disposed Thus, it is described that the heat exchanger can be installed in a ceiling space while increasing the size of the heat exchanger (to ensure both air conditioning performance and installation in a restricted ceiling space).

  However, even if the rear side portion (corresponding to the blower unit 30) where the fan is arranged is made smaller than the front side portion (corresponding to the heat exchange unit 20) where the heat exchanger is arranged, the triangle When installed on the ceiling of the roof, interference with the climbing beam 3 is not always avoided. That is, the invention described in Patent Document 2 is not considered at all for the installation of the triangular roof on the ceiling.

JP 2011-158187 A JP 2013-249994 A

  By the way, as one of the measures for avoiding interference with the climbing beam 3, a beam avoiding groove through which a part of the climbing beam 3 passes through a corner portion on the upper surface side of either the heat exchange unit 20 or the blower unit 30. It is conceivable to form (beam insertion groove).

  First, when the beam insertion groove is formed in the corner portion on the upper surface side of the blower unit 30, the beam insertion groove forming metal fitting is attached by cutting out the portion of the casing made of sheet metal. Since there is no support structure at the upper side corner portion, a dedicated metal fitting for supporting the metal fitting for forming the beam insertion groove is required separately, which increases the number of parts and the number of work steps, which is not preferable.

  In a ceiling-embedded duct type air conditioner, a sirocco fan is usually used as a blower. In the case of a sirocco fan, it is preferable that there is no ventilation resistance in the space between the housing inner surface and the sirocco fan because there is an air suction port on the side surface facing the axial end of the multiblade rotating cylinder of the fan casing. . For this reason, it is not preferable to provide a metal fitting for forming a beam insertion groove that provides ventilation resistance on the blower unit 30 side.

  Accordingly, an object of the present invention is to provide a beam insertion groove that is reasonably arranged, and to climb an indoor unit in which the length of the indoor unit is longer than the interval of the climbing beam on the ceiling of the triangular roof having the beam structure described above. It is an object to provide a ceiling-embedded duct type air conditioner that can be installed avoiding the above.

In order to solve the above-described problems, the present invention provides a heat exchange unit in which a heat exchanger is accommodated in a rectangular parallelepiped first casing, and a blower unit in which a blower is accommodated in a rectangular parallelepiped second casing. The indoor unit includes a purlin arranged at the top, a pair of eaves girder parallel to the purlin and parallel to each other at the skirt, and slanted between the purlin and the eaves girder In the ceiling-embedded duct type air conditioner installed on the back of the triangular roof with a triangular shape including the climbing beam passed,
The heat exchange unit includes a support member that supports an end of the heat exchanger in the first housing, and the climbing beam is formed on a part of the support member at a corner portion on the upper side of the first housing. A beam avoiding portion for forming a beam insertion groove through which a part of the beam is passed is provided.

  In this invention, it is preferable that the said beam avoidance part is arrange | positioned in contact with the connection part with the said 2nd housing | casing among the said 1st housing | casing.

  According to the present invention, since the beam insertion groove through which a part of the climbing beam is passed is formed in the corner portion on the upper side of the first casing of the heat exchange unit, the length of the indoor unit is set to the interval between the climbing beams. Longer indoor units can be installed avoiding climbing beams.

  In addition, the beam avoiding portion is provided in a part of the support that supports the end portion of the heat exchanger in the first housing, and the support avoiding portion and the beam avoiding portion are integrated as one part, so that the beam avoiding portion is provided. In particular, it is not necessary to prepare the beam avoidance part as a separate separate part.

1 is a perspective view showing a first embodiment of a ceiling-embedded duct type air conditioner according to the present invention. The perspective view which isolate | separates and shows the heat exchange unit and air blower unit of the said 1st Embodiment. The perspective view which decomposes | disassembles and shows the heat exchange unit in FIG. The perspective view which shows the support tool of a heat exchanger. The perspective view which shows another example of the said support tool. The perspective view which shows 2nd Embodiment of the ceiling embedded duct type air conditioner which concerns on this invention. The perspective view which isolate | separates and shows the heat exchange unit and air blower unit of the said 2nd Embodiment. The typical perspective view which shows the indoor unit of a ceiling embedded duct type air conditioner. The perspective view which shows the beam structure of a triangular roof.

  Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 7, but the present invention is not limited to this.

  First, referring to FIGS. 1 to 3, a ceiling-embedded duct type air conditioner (hereinafter, also referred to as “indoor unit”) 10 </ b> A according to this embodiment includes a heat exchange unit 20, a blower unit 30, and the like. It has.

  The heat exchange unit 20 and the blower unit 30 are carried into the back of the ceiling in a divided state and assembled so as to be integrated with the back of the ceiling. The assembled heat exchange unit 20 and the blower unit 30 are suspended from the ceiling by a suspension tool such as a suspension bolt (not shown).

  The heat exchange unit 20 includes a rectangular parallelepiped casing (first casing) 20A. The housing 20A includes a top panel 21, a bottom panel 22, a left side panel 23L, and a right side panel 23R. As shown in FIGS. 1 and 2, the front side on the front side and the back side on the rear side are open for ventilation. Has been.

  A frame 24 for connecting a duct (not shown) is attached to the periphery of the opening on the front side. When it is not necessary to distinguish the left side panel 23L and the right side panel 23R, they are collectively referred to as the side panel 23.

  As shown in FIG. 3, a heat exchanger 25 and a drain pan (dew tray) 26 are accommodated in the housing 20A. In this embodiment, the heat exchanger 25 is connected to each side of the flat-type first heat exchanger 25a and the second heat exchanger 25b with a connecting member, and is also called a wedge shape (also referred to as a "U" shape). ) Is used.

  In this embodiment, the right side panel 23R includes a pipe connection portion 251 of the heat exchanger 25, a drawer guide groove 231 for pulling out the drain outlet 261 of the drain pan 26, and the front side of the side panel 23R in FIG. And a curtain plate 232 that is bent so as to wrap around the front side of the housing 20A.

  The heat exchanger 25 is fixed in the housing 20 </ b> A via support members 27 attached to both ends thereof. FIG. 3 shows only the right support 27 of the supports 27 attached to both ends of the heat exchanger 25, but the left support, not shown, is shaped as the right support. It is symmetrical with 27 shapes.

  The blower unit 30 includes a rectangular parallelepiped casing (second casing) 30A having substantially the same shape and size as the casing 20A of the heat exchange unit 20. The housing 30A includes a top panel 31, a bottom panel 32, a left side panel 33L, and a right side panel 33R. In this embodiment, two blower fans (preferably sirocco fans) 35 are provided therein. ing.

  As shown in FIGS. 1 and 2, the front side and the back side of the front side of the housing 30 </ b> A are opened for ventilation. In this embodiment, air is blown from the back surface of the housing 30 </ b> A by the operation of the blower fan 35. Is sucked in and air is blown out from the front surface of the housing 30A.

  A partition plate 34 is provided on the front surface (air blowing side) of the housing 30A. Ventilation windows 34 a and 34 a corresponding to the air blowing portions of the blower fans 35 and 35 are formed in the partition plate 34. In this embodiment, air flows from the blower unit 30 side toward the heat exchange unit 20 by the operation of the blower fan 35.

  Although not shown, a connection means for connecting the heat exchange unit 20 and the blower unit 30 is provided at a portion of the heat exchange unit 20 facing the partition plate 34.

  As an actual size example, the length (length along the ventilation direction) L1 of the heat exchange unit 20 is about 460 mm, and the length L2 of the blower unit 30 is about 490 mm. Both units 20 and 30 have a lateral width W of about 1400 mm and a height H of about 365 mm. Moreover, the distance (length of the shed beam 4) between the opposing eaves girder 2 in the triangular roof where this indoor unit 10A is installed is about 1650 mm.

  When the heat exchange unit 20 and the blower unit 30 are connected, the overall length of the indoor unit 10A is L1 + L2 = about 950 mm. On the other hand, if the interval between the climbing beams 3 on the triangular roof is, for example, 600 mm, as described above, the climbing beam 3 becomes an obstacle, and the heat exchange unit 20 and the blower unit 30 can be connected. Can not.

  Therefore, in this embodiment, a part of the climbing beam 3 (see FIG. 9) passes through both corners on the upper side of the casing 20A included in the heat exchange unit 20 (the corner where the top panel 21 and the side panel 23 intersect). The large-sized indoor unit 10 </ b> A can be assembled without being disturbed by the climbing beam 3 on the ceiling of the triangular roof.

  The beam insertion groove 40 is formed by a beam avoiding portion 28 provided in the support tool 27. Referring to FIGS. 3 and 4, the support 27 is fitted with the upper side 271 along the inner surface of the upper panel 21, the side 272 along the inner surface of the curtain 232 of the side panel 23, and the end of the heat exchanger 25. It consists of a metal plate having a holding groove 273. A synthetic resin plate may be used instead of the metal plate.

  A flange piece 271 a that contacts the inner surface of the upper panel 21 is formed on the upper side 271. Further, a flange piece 272 a that contacts the inner surface of the curtain plate 232 is formed on the side 272.

  The flange piece 272a and the curtain plate 232 are respectively provided with screw insertion holes 272b and 232b for screwing both. In the holding groove 273, a positioning surface 273a on which the upper surface of the first heat exchanger 25a abuts and a positioning surface 273b on which the lower surface of the second heat exchanger 25b abuts are formed.

  The beam avoiding portion 28 forming the beam insertion groove 40 is formed integrally with the support tool 27 on the upper side 271 of the support tool 27. In this embodiment (first embodiment), as shown in FIG. 3, a U-shaped notch 21a is formed at an intermediate position of the top panel 21 near the connection side with the blower unit 30, and the side panel. A concave groove 233 corresponding to the notch 21a is also formed on the upper side 23a side of 23, and the beam avoiding portion 28 is disposed in the notch 21a.

  As shown in FIG. 4, the beam avoiding portion 28 includes an inclined plate 281 having an inclined surface that is inclined downward at a predetermined inclination angle from the upper side 271 of the support tool 27, and a side plate 282 that rises substantially perpendicularly from both sides of the inclined plate 281. , 283. The side plates 282 and 283 are provided so that air leakage does not occur from the beam insertion groove 40.

  Flange pieces 281 a, 282 a, and 283 a that are in contact with the inner surface of the side panel 23 are connected to the lower side of the inclined plate 281 and the side between the side plates 282 and 283, respectively. In this embodiment, these flange pieces 281 a, 282 a, and 283 a are screwed to the side panel 23. In addition, flange pieces 282 b and 283 b facing the inner surface of the upper panel 21 are connected to the upper sides of the side plates 282 and 283.

  According to this embodiment, the support member 27 is attached to both ends of the heat exchanger 25, and the beam avoiding portion 28 provided on the support member 27 is disposed on the upper surface as the heat exchanger 25 is incorporated into the housing 20A. A beam insertion groove 40 is formed between the notch 21a of the panel 21 and the groove 233 of the side panel 23, and a part of the climbing beam 3 is passed through both corners on the upper side of the housing 20A. Note that the beam insertion groove 40 by the beam avoiding portion 28 may be provided at one corner of the upper side of the housing 20A.

  The support 27 in the above embodiment is for a rust-like heat exchanger that connects each side of the planar first heat exchanger 25a and the second heat exchanger 25b, but as shown in FIG. Alternatively, it may be a support 27a for one planar heat exchanger 25a (or 25b). In this case, the support 27a is formed with a slit-like holding groove 273c into which the end of the heat exchanger 25a is fitted.

  In any case, since the support tool 27 (27a) is a component that is always required when the heat exchanger 25 is installed in the heat exchange unit 20, the beam avoiding portion 28 is provided in a part of the support tool 27 (27a). By providing the support member 27 (27a) and the beam avoiding portion 28 as one component, it is not necessary to prepare the beam avoiding portion 28 as a separate component.

  With reference to FIG. 1 thru | or FIG. 3, in the said embodiment (1st Embodiment), since the beam insertion groove 40 is arrange | positioned in the intermediate position near the connection side with the air blower unit 30, it climbs the heat exchange unit 20. When installed between the beams 3 and 3, the heat exchange unit 20 is lowered to a position where the width W rises and enters between the beams 3 and 3 so that the climbing beams 3 and 3 enter the beam insertion grooves 40 and 40. After that, the heat exchange unit 20 may be lifted to a predetermined height position.

  On the other hand, according to the beam insertion groove 40A of the second embodiment shown in FIGS. 6 and 7, the beam insertion groove 40A is provided in contact with the connecting portion with the blower unit 30, whereby the heat exchange unit 20. Can be installed between the climbing beams 3 and 3 only by moving in the lateral direction (on the blower unit 30 side in FIG. 7 and in the direction of arrow A in FIG. 9).

  The beam insertion groove 40A has an L-shaped U-shaped notch 21a formed in the upper panel 21 in FIG. 3, and a concave groove formed on the upper side 23a side of the side panel 23. 233 is similarly L-shaped, and is obtained by deleting the outer side plate 282 of the side plates 282 and 283 provided in the beam avoiding portion 28 in FIG.

  By providing such a beam insertion groove 40A, it is possible to climb the beam insertion groove 40A simply by moving the heat exchange unit 20 in a horizontal direction (on the side of the blower unit 30 in FIG. 7 and in the direction of arrow A in FIG. 9). It can be fitted to the beam 3. The beam insertion grooves 40A are also provided at both corners or one corner according to the width W of the heat exchange unit 20.

  As described above, according to the present invention, a part of the climbing beam 3 is passed through the upper side corners (both corners or one side corners) of the housing 20 </ b> A that forms the outline of the heat exchange unit 20. Since the beam avoiding portion 28 that forms the beam insertion groove 40 is provided, an indoor unit in which the length of the indoor unit is longer than the interval between the climbing beams 3 can be installed avoiding the climbing beam.

10A indoor unit 20 heat exchange unit 20A housing (first housing)
21 Top panel 22 Bottom panel 23 (23L, 23R) Side panel 25 (25a, 25b) Heat exchanger 26 Drain pan 27 Holder 28 Beam avoiding part 30 Blower unit 30A Housing (second housing)
31 Top panel 32 Bottom panel 33 (33L, 33R) Side panel 34 Partition plate 34a Ventilation window 40 Beam insertion groove

Claims (2)

An indoor unit including a heat exchange unit in which a heat exchanger is accommodated in a rectangular parallelepiped first casing and a blower unit in which a blower is accommodated in a rectangular parallelepiped second casing, and the indoor unit includes: A triangular roof having a triangular shape including a purlin arranged at the top, a pair of eaves girder parallel to the urn and parallel to each other at the skirt, and climbing beams spanned diagonally between the eaves and the eaves In the ceiling embedded duct type air conditioner installed in the attic of
The heat exchange unit includes a support member that supports an end of the heat exchanger in the first housing, and the climbing beam is formed on a part of the support member at a corner portion on the upper side of the first housing. A ceiling-embedded duct type air conditioner characterized in that a beam avoiding portion that forms a beam insertion groove through which a part of the air is passed is provided.   2. The ceiling-embedded duct type air conditioner according to claim 1, wherein the beam avoiding portion is disposed in contact with a connection portion of the first casing with the second casing.

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