JP2018119738A - Ceiling-embedded duct type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install an indoor machine at an attic of a triangle roof so as to avoid ascending beams, the indoor machine having a length longer than an interval between the ascending beams.SOLUTION: When an indoor machine 10A, where a heat exchange unit 20 and a blower unit 30 are divided, is installed at an attic of a triangle roof where a plurality of ascending beams 3 are provided in parallel between a ridge beam 1 and a pole plate 2, a relay duct 40 is provided for connecting between a heat exchange unit 20 and a blower unit 30 so that between end parts on both opposite sides of the heat exchange unit 20 and blower unit 30 a beam insertion groove is formed, into which a portion of the ascending beam 3 is inserted.SELECTED DRAWING: Figure 2

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.

  In the ceiling-embedded duct type air conditioner, the indoor unit is installed on the back of the ceiling, but since the carry-in entrance (frontage) to the back of the ceiling is narrow, the heat exchange included in the indoor unit 10 is shown in FIG. The unit 20 and the blower unit 30 are divided, and the 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. 11, the heat exchange unit 20 and the blower unit 30 may not be directly assembled at the back of the ceiling due to the beam structure.

  As shown in FIG. 11, the triangular roof is composed of a purlin 1 arranged at the top, a pair of eaves 2 and 2 arranged in parallel to the skirt and parallel to each other at the skirt, and a purlin 1 and eaves 2 and 2. It has a triangular shape including a climbing beam (rafter) 3 and an eaves girder 2 and 2 that are bridged diagonally between them, and the interval between the climbing beams 3 is generally 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, when both the heat exchange unit 20 and the blower unit 30 become large and these units 20 and 30 are connected to each other, The length of the indoor unit 10 (the length along the ventilation direction) L is, for example, 950 mm, and the distance between the climbing beams 3 on the triangular roof is more than 600 mm. The blower unit 30 cannot be directly 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. However, if one unit has insufficient air conditioning capacity, the second unit is necessary, and the cost is reduced accordingly. There is a problem that the installation work becomes complicated as the height increases.

JP 2011-158187 A

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

In order to solve the above-described problems, the present invention includes an indoor unit having a heat exchange unit and a blower unit, and the indoor unit is arranged in parallel to the purlin arranged at the top, parallel to the purlin and parallel to the skirt. In a ceiling-embedded duct type air conditioner installed in the attic of a triangular roof that has a triangular shape including a pair of eaves and a climbing beam that is bridged obliquely between the purlin and the eaves,
Each of the heat exchange unit and the blower unit has a rectangular parallelepiped housing, and the heat exchange unit and the blower unit have a part of the climbing beam passed between the end portions on both sides of each housing. It is characterized by being connected via a relay duct in a state separated by a predetermined distance so as to form a beam insertion groove.

  According to a preferred aspect of the present invention, a connection auxiliary frame is attached to each of the end surface on the air blowing side of the blower unit and the end surface on the air inflow side of the heat exchange unit so as to cover each end surface, and each of the connection auxiliary frames described above. Has a rectangular ventilation opening at the center thereof, and the relay duct includes a highly rigid sheet metal casing having a ventilation path that matches the ventilation opening of the connection auxiliary frame. The length of the relay duct in the ventilation direction is longer than the width of the climbing beam.

  According to the present invention, the heat exchange unit and the blower unit are connected to the relay duct (preferably the length in the ventilation direction is longer than the width of the climbing beam, and the connecting side end face of each unit (the air blowing side opening face of the blower unit) Part of the climbing beam between the opposite ends of the heat exchange unit and the blower unit, connected (connected) via a relay duct having a width smaller than the width of the air inflow side opening surface of the heat exchange unit) By forming the beam insertion groove through which the indoor unit passes, it is possible to install the indoor unit in which the length of the indoor unit is longer than the interval between the climbing beams while avoiding the climbing beam.

  Moreover, since the heat exchange unit and the blower unit are firmly connected by making the relay duct into a cylindrical sheet metal duct having high rigidity that is difficult to deform, each unit when the heat exchange unit and the blower unit are suspended. It is possible to minimize the deformation of the lower side of the plate.

BRIEF DESCRIPTION OF THE DRAWINGS (a) Typical top view which shows the indoor unit of the ceiling embedded duct type air conditioner which concerns on one Embodiment of this invention, (b) The AA sectional view taken on the line. The perspective view which shows the state which installed the said indoor unit in the ceiling back of a triangular roof. The perspective view which attached the connection auxiliary | assistant frame to the relay duct, and was set as the duct unit. The disassembled perspective view of the said duct unit. The schematic diagram which shows the subject which arises at the time of suspension of the heat exchange unit and air blower unit which were connected with the said relay duct. Sectional drawing of the said duct unit. The expanded sectional view of the circled part B of FIG. The perspective view which shows the fixture which fixes a heat exchange unit and an air blower unit. The perspective view which shows the said fixing bracket single-piece | unit. 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 9, but the present invention is not limited to this.

  First, referring to FIG. 1 and FIG. 2, even in a ceiling-embedded duct type air conditioner (hereinafter, also referred to as “indoor unit”) 10 </ b> A according to this embodiment, it is easy to carry into the ceiling. Therefore, the indoor unit 10A is divided into the heat exchange unit 20 and the blower unit 30, but in the case of the present invention, the heat exchange unit 20 and the blower unit 30 are connected (connected) when assembled in the back of the ceiling. The relay duct 40 is provided. Both the heat exchange unit 20 and the blower unit 30 have a rectangular parallelepiped casing.

  As a basic configuration, a heat exchanger 21 and a drain pan 22 connected to a refrigerant pipe from an outdoor unit (not shown) are provided in the heat exchange unit 20. A blower fan (preferably a sirocco fan) 31 is provided in the blower unit 30. In this embodiment, air flows from the blower unit 30 toward the heat exchange unit 20.

  On the left and right side surfaces 201 and 201 of the heat exchange unit 20, hanging brackets 23 and 23 are fixed. Similarly, hanging brackets 32 and 32 are also fixed to the left and right side surfaces 301 and 301 of the blower unit 30.

  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 W1 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 directly connected, the total 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 directly connects the heat exchange unit 20 and the blower unit 30. I can't.

  Therefore, in the present invention, a relay duct 40 having a narrower width than these units 20 and 30 is interposed between the heat exchange unit 20 and the blower unit 30 so that the end portions on both sides of the heat exchange unit 20 and the blower unit 30 are disposed. As shown in FIG. 2, the large indoor unit 10 </ b> A is installed on the climbing beam 3 in the back of the ceiling of the triangular roof as shown in FIG. 2 so that beam insertion grooves 401 and 401 through which a part of the climbing beam 3 is passed are formed. Can be assembled without being disturbed.

  In this example, the lateral width W2 of the relay duct 40 is 1110 mm, the relay duct 40 is disposed at the center in the lateral width direction (direction perpendicular to the ventilation direction) between the heat exchange unit 20 and the blower unit 30, and the beam insertion groove 401 is disposed. , 401 has a depth D of 145 mm. Further, since the width of the climbing beam 3 is normally 20 to 50 mm, the length (length along the ventilation direction) L3 of the relay duct 40 is 127 mm.

  The relay duct 40 may be a flexible duct that can be deformed (bent), but when the heat exchange unit 20 and the blower unit 30 are connected by the relay duct 40 and suspended as shown in FIG. In order to reduce the deformation such that the lower side of 20 and 30 opens, a sheet metal duct having rigidity that does not easily deform (bend) is more preferable than a flexible duct.

  Referring to FIGS. 3 and 4, relay duct 40 is a rectangular tubular sheet metal duct having an upper plate 41, a lower plate 42, a left side plate 43 and a right side plate 44. Flanges 41 a, 42 a, 43 a, 44 a bent at substantially right angles toward the outside are integrally formed at the respective edges of the upper plate 41, the lower plate 42, the left side plate 43 and the right side plate 44.

  A heat insulating sheet 45 is attached to the outer surfaces of the upper plate 41, the lower plate 42, the left side plate 43, and the right side plate 44, respectively. Further, a sealing material 46 having elasticity is affixed to the flanges 41a, 42a, 43a, 44a.

  The relay duct 40 is attached to the heat exchange unit 20 and the blower unit 30 via the connection auxiliary frames 50 and 60. Both the connection auxiliary frames 50 and 60 are preferably made of sheet metal like the relay duct 40. The relay duct 40 and the connection auxiliary frames 50 and 60 may be made of synthetic resin as long as the rigidity equal to that of the sheet metal material can be obtained.

  One connection auxiliary frame 50 is a connection auxiliary frame on the heat exchange unit 20 side, and is attached so as to cover the connection side end surface (opening surface on the air inflow side in FIG. 1B) 202 of the heat exchange unit 20. A rectangular opening 51 having substantially the same size as the opening of the relay duct 40 is formed at the substantially central portion of the connection auxiliary frame 50.

  On the four sides of the opening 51, an upper guide piece 52, a lower guide piece 53, a left guide piece 54 and a right guide piece 55 are provided so as to enter the relay duct 40. Among these, female screw holes 541 and 551 are respectively formed at two locations on the upper and lower sides of the left guide piece 54 and the right guide piece 55.

  The other connection auxiliary frame 60 is a connection auxiliary frame on the blower unit 30 side, and is attached so as to cover the connection side end face (opening surface on the air blowing side in FIG. 1B) 302 of the blower unit 30. A rectangular opening 61 having substantially the same size as the opening of the relay duct 40 is formed in the substantially central portion of the connection auxiliary frame 60, similarly to the connection auxiliary frame 50 on the heat exchange unit 20 side.

  On the four sides of the opening 61, an upper guide piece 62, a lower guide piece 63, a left guide piece 64, and a right guide piece 65 are provided so as to enter the relay duct 40 (see FIG. 6 for the upper guide piece 62). , See FIG. Among these, female screw holes 641 and 651 are respectively formed at two locations on the upper and lower sides of the left guide piece 64 and the right guide piece 65.

  Screw insertion holes 431 and 431 are formed at positions corresponding to the female screw holes 541 and 541 formed in the left guide piece 54 of the connection auxiliary frame 50 on the connection auxiliary frame 50 side of the left side plate 43 of the relay duct 40. Has been.

  Further, screw insertion holes 432, 432 are provided at positions corresponding to the female screw holes 641, 641 formed in the left guide piece 64 of the connection auxiliary frame 60 on the connection auxiliary frame 60 side of the left side plate 43 of the relay duct 40. It has been drilled.

  Screw insertion holes 441 and 441 are formed at positions corresponding to the female screw holes 551 and 551 formed in the right guide piece 55 of the connection auxiliary frame 50 on the connection auxiliary frame 50 side of the right side plate 44 of the relay duct 40. Has been.

  Further, on the connection auxiliary frame 60 side of the right side plate 44 of the relay duct 40, screw insertion holes 442 and 442 are provided at positions corresponding to the female screw holes 651 and 651 formed in the right guide piece 65 of the connection auxiliary frame 60. It has been drilled.

  According to this, on the left side plate 43 side of the relay duct 40, the screw insertion holes 431 and 431 and the female screw holes 541 and 541 are aligned, and the screw insertion holes 432 and 432 and the female screw holes 641 and 641 are aligned. Then, four male screws (not shown) are screwed into the female screw holes 541, 541, 641 and 641 from the outside of the left side plate 43.

  Similarly, on the right side plate 44 side of the relay duct 40, the screw insertion holes 441 and 441 and the female screw holes 551 and 551 are aligned, and the screw insertion holes 442 and 442 and the female screw holes 651 and 651 are aligned. From the outside of the right side plate 43, four male screws (not shown) are screwed into the female screw holes 541, 541, 641, 641.

  As a result, as shown in FIG. 3, the relay duct 40 is sandwiched between the auxiliary connecting frames 50 and 60 and assembled together. At this time, the sealing material 46 is closely attached around the openings 51 and 61 of the connection auxiliary frames 50 and 60.

  When the heat exchange unit 20 and the blower unit 30 are connected by the relay duct 40, as shown in FIG. 3, the relay duct 40 is sandwiched between the connection auxiliary frames 50 and 60 to form a duct unit. 50 may be attached to the heat exchange unit 20 and the connection auxiliary frame 60 may be attached to the blower unit 30. Conversely, the connection auxiliary frame 50 is first attached to the heat exchange unit 20 and the connection auxiliary frame 60 is attached to the blower. After attaching to the unit 30, you may connect between them by the relay duct 40. FIG.

  By the way, when the indoor unit 10A assembled as described above is suspended by the suspension bolts 5 and 5 as shown in FIG. 5, the heat exchange unit 20 and the blower unit 30 are connected to the relay duct 40 by the relay duct. Since it is only screwed on the side plate side of 40, the lower side between each unit is inclined so that the upper side approaches and the amount of crushing of the sealing material 46 varies and the sealing function may be impaired.

  Therefore, referring to FIGS. 6 and 7, the indoor unit 10 </ b> A includes a stopper 410 that regulates the relative movement amount of the heat exchange unit 20 and the blower unit 30 in the relay duct 40. .

  In this embodiment, the stopper 410 includes stoppers 410a, 410b, 410c, 410d. Among these, the stoppers 410a and 410b are provided on the upper plate 41 side, and the stoppers 410c and 410d are provided on the lower plate 42 side.

  The stopper 410a is disposed so as to face the upper guide piece 52 on the connection auxiliary frame 50 side entering the relay duct 40, and the stopper 410b is opposed to the upper guide piece 62 on the connection auxiliary frame 60 side entering the relay duct 40. Are arranged to be.

  The stopper 410c is disposed so as to face the lower guide piece 53 on the connection auxiliary frame 50 side entering the relay duct 40, and the stopper 410d is the lower guide piece 63 on the connection auxiliary frame 60 side entering the relay duct 40. Are arranged to face each other.

  Since the stoppers 410a, 410b, 410c, and 410d have the same configuration, the stopper 410b will be described with reference to FIG.

  When the relay duct 40 and the connection auxiliary frame 60 are connected, the sealing material 46 is sandwiched between them and compressed. If the sealing material 46 is compressed excessively so as to be completely crushed, the durability life is deteriorated, which is not preferable.

  The stopper 410b abuts against the tip 62a of the upper guide piece 62 on the coupling auxiliary frame 60 side before the seal material 46 is excessively compressed, and prevents further compression of the seal material 46.

  That is, referring to FIG. 7, when the minimum compression width of the seal material 46 (compression limit width that does not deteriorate the durable life) is Tmm, the stopper 46 is brought into contact with the connection auxiliary frame 60 without being compressed. 410b is arranged at a position where the distance Ta between the stopper 410b and the tip 62a of the upper guide piece 62 is Tmm or less.

  Similarly, the other stoppers 410 (410a, 410c, 410d) are arranged at positions where the distance Ta to the tip of the guide piece that they face is Tmm or less. The stopper 410 is preferably a cut-and-raised piece cut and raised from the upper plate 41 or the lower plate 42, but may be erected as a rib.

  By providing such a stopper 410 in the relay duct 40, the sealing material 46 is excessively compressed over the entire circumference of the relay duct 40 even when the indoor unit 10A is suspended by the suspension bolts 5 and 5. It will be compressed almost evenly.

  The stoppers 410a, 410b, 410c, and 410d are preferably provided at two places on the right and left sides of the right side plate 44 and the left side plate 45, respectively. However, as shown in FIG. The stoppers 410c and 410d on the lower plate 42 side may be omitted if the lower side of the heat exchange unit 20 and the blower unit 30 is prevented from being tilted.

  In this embodiment, the indoor unit 10A includes a fixing bracket 70 for further firmly fixing the heat exchange unit 20 and the blower unit 30 connected by the relay duct 40, as shown in FIGS. ing. The fixing metal 70 may be employed as a substitute for the stopper 410 or may be used in combination with the stopper 410.

  The fixture 70 is made of sheet metal, and includes a beam insertion groove 401 formed between the heat exchange unit 20 and the blower unit 30 by the relay duct 40 and a substrate 71 having a substantially equal width.

  On one side of the substrate 71 (left side in FIG. 9), a left side plate 72a is provided that is bent at a substantially right angle so as to follow the surface 501 (see FIG. 4) of the connection auxiliary frame 50 attached to the heat exchange unit 20. ing.

  A blade 73a extending along the side surface 201 of the heat exchange unit 20 is drawn out from the end edge 721a of the left side plate 72a. A screw insertion hole 731a is formed in the wing plate 73a, and a locking claw piece 732a bent at a substantially right angle toward the side surface 201 of the heat exchange unit 20 is formed at the end of the wing plate 73a. Is provided.

  On the other side of the substrate 71 (on the right side in FIG. 9), a right side plate 72b is provided that is bent at a substantially right angle along the surface 601 (see FIG. 4) of the auxiliary connecting frame 60 attached to the blower unit 30. ing.

  A blade 73b extending along the side surface 301 of the blower unit 30 is drawn out from the edge 721b of the left side plate 72b. The blade plate 73b is provided with a screw insertion hole 731b, and an end portion of the blade plate 73b is provided with a locking claw piece 732b bent substantially at a right angle toward the side surface 301 of the blower unit 30. It has been.

  On the left and right side surfaces 201, 201 of the heat exchange unit 20, a female screw hole 202 corresponding to the screw insertion hole 731a of the blade plate 73a and a locking slit 203 for locking the locking claw piece 732a are formed. Has been. Similarly, on the left and right side surfaces 301, 301 of the blower unit 30, a female screw hole 302 corresponding to the screw insertion hole 731b of the blade plate 73b and a locking slit 303 for locking the locking claw piece 732b. Is formed.

  The fixing bracket 70 connects the heat exchange unit 20 and the blower unit 30 via the relay duct 40, and then fits the substrate 71 into the beam insertion groove 401, and the locking claw pieces 732a and 732b are respectively locked to the locking slit 203. , 303 and a male screw (not shown) is screwed into the female screw holes 203, 303 through the screw insertion holes 731a, 731b, thereby being attached to the heat exchange unit 20 and the blower unit 30. 20 and 30 are firmly fixed.

  The securing metal fitting 70 is preferably as large as possible in order to ensure the required strength, but this will interfere with the climbing beam 3.

  Therefore, in this embodiment, as described above, the left side plate 72a and the right side plate 72b bent at substantially right angles are provided on the left side and the right side of the substrate 71 so that the climbing beam 3 is not obstructed. 71 is fitted in the back of the beam insertion groove 401, and a climbing beam insertion groove 71 a included in the beam insertion groove 401 is formed in the substrate 71, thereby strengthening the heat exchange unit 20 and the blower unit 30. The climbing beam 3 is inserted while being fixed.

  In addition, the groove | channel 71a should just have the width | variety equivalent to the width | variety of the climbing beam 3 at least. Further, the fixing bracket 70 may be made of synthetic resin as long as rigidity equivalent to that of a metal material can be obtained.

  As described above, according to the present invention, the heat exchange unit 20 and the blower unit 30 are connected via the relay duct 40, and the climbing beam 3 is interposed between the opposite corner portions of the heat exchange unit 20 and the blower unit 30. By forming the beam insertion groove 401 through which a part of the indoor unit is passed, the indoor unit whose length is longer than the interval between the climbing beams 3 can be installed avoiding the climbing beam 3.

10A Indoor unit 20 Heat exchange unit 30 Blower unit 40 Relay duct 401 Beam insertion groove 410 (410a to 410d) Stopper 50 Connection auxiliary frame (heat exchange unit side)
51 Opening 52-55 Guide Piece 60 Connection Auxiliary Frame (Blower Unit Side)
61 Opening 62-65 Guide piece 70 Fixing bracket

Claims (3)

An indoor unit having a heat exchange unit and a blower unit, wherein the indoor unit is a purlin arranged at the top, a pair of eaves arranged in parallel to the skirt and parallel to the skirt, and the eaves and the eaves In a ceiling embedded duct type air conditioner installed in the attic of a triangular roof that has a triangular shape including climbing beams that are bridged diagonally between,
Each of the heat exchange unit and the blower unit has a rectangular parallelepiped housing, and the heat exchange unit and the blower unit have a part of the climbing beam passed between the end portions on both sides of each housing. A ceiling-embedded duct type air conditioner characterized in that it is connected via a relay duct with a predetermined distance so as to form a beam insertion groove.   A connection auxiliary frame is attached to each of the end surface on the air outlet side of the blower unit and the end surface on the air inflow side of the heat exchange unit so as to cover each end surface, and each of the connection auxiliary frames has a quadrangular shape at the center. The high-rigidity sheet metal housing having a ventilation opening, the relay duct having a ventilation path that matches the ventilation opening of the connection auxiliary frame. The ceiling-embedded duct type air conditioner as described.   The ceiling-embedded duct type air conditioner according to claim 1 or 2, wherein the relay duct has a length in a ventilation direction longer than a width of the climbing beam.

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