JP2017146011A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an air conditioner suppressing presence feeling of indoor units and being capable of enhancing integrated feeling of the indoor units and a foundation structure.SOLUTION: An air conditioner comprises: a frame assembled to a foundation structure located in a space to be air-conditioned; a plurality of indoor units attached to the frame so as to face a periphery of the foundation structure; and a plurality of panels attached to the frame. Each of the plurality of indoor units includes: a heat exchanger performing a heat exchange between coolant and air; and a suction port guiding the air to the heat exchanger. The plurality of panels surrounds the periphery of the foundation structure in cooperation with the indoor units. In a state of the indoor units and the panels being attached to the frame, a suction passage partitioned from the space to be air-conditioned is regulated around the foundation structure, and the suction ports of the indoor units communicate with the suction passage.SELECTED DRAWING: Figure 9

Description

  Embodiments of the present invention relate to an air conditioner in which a plurality of indoor units are installed around a foundation structure such as a pillar.

  For example, in a large-scale production factory, an air conditioner that locally cools and heats a work area dispersed in the factory building is used. This type of air conditioner includes a plurality of indoor units that blow out air whose temperature and humidity are adjusted toward a work area. The indoor unit is installed on the outer peripheral portion of the pillar so as to surround the pillar that is a skeleton of the building, for example.

Japanese Examined Patent Publication No. 7-62558

  When a plurality of indoor units are installed around the pillar, ducts that lead air to the heat exchanger of the indoor units and piping that lead the refrigerant to the heat exchanger may be exposed to the work area. Since ducts and piping are routed around the pillars, the presence of indoor units in the work area cannot be emphasized.

  At the same time, it tends to be an unnatural form as if the indoor unit was attached to an existing pillar later, and it becomes extremely difficult to obtain a sense of unity between the indoor unit and the pillar.

  An object of the present invention is to obtain an air conditioner that can suppress the presence of an indoor unit and can enhance the unity between the indoor unit and the foundation structure.

  According to the embodiment, the air conditioner includes a frame assembled to a foundation structure located in a space to be air-conditioned, a plurality of indoor units attached to the frame so as to face an outer peripheral portion of the foundation structure, and a frame And a plurality of panels attached to. The indoor unit includes a heat exchanger that performs heat exchange between the refrigerant and air, and a suction port that guides air to the heat exchanger. The panel surrounds the outer periphery of the foundation structure in cooperation with the indoor unit. In a state where the indoor unit and the panel are attached to the frame, a suction passage partitioned from a space to be air-conditioned is defined around the foundation structure, and the suction port of the indoor unit communicates with the suction passage.

It is a circuit diagram showing the piping system of the air harmony device concerning a 1st embodiment. It is the perspective view which looked at the indoor unit of a 1st embodiment from the direction of the front. It is the perspective view which looked at the indoor unit from the direction of the back. It is a perspective view which decomposes | disassembles and shows the internal structure of an indoor unit. It is a front view of an indoor unit. It is sectional drawing of an indoor unit which shows the flow direction of the air which blows off from an indoor unit. It is a side view of the air harmony device concerning a 1st embodiment. It is a perspective view of the air harmony device concerning a 1st embodiment. It is a top view which shows the state which installed the 1st thru | or 4th indoor unit assembly in the pillar of the building through the flame | frame. It is a perspective view which shows the state which assembled | attached the frame to the pillar of the building. It is a perspective view which shows the state which assembled | attached the lower structure of the flame | frame on the pillar of the building. It is a perspective view which expands and shows the connection location of a lower structure and an upper structure. It is a perspective view of the 1st indoor unit assembly which connected the four indoor units integrally by the sub-frame. It is a perspective view which shows the positional relationship of a sub-frame and an indoor unit. It is a perspective view which decomposes | disassembles and shows the mutual positional relationship of a flame | frame, an exterior panel, and a filter. It is a perspective view of the air conditioning apparatus which shows the relative positional relationship of a filter element and an outer frame. It is a side view of the air conditioning apparatus which concerns on the modification of 1st Embodiment. It is a side view of the air conditioning apparatus which concerns on 2nd Embodiment. It is a perspective view of the air conditioning apparatus which concerns on 2nd Embodiment. In 2nd Embodiment, it is a perspective view of the air conditioning apparatus which shows the positional relationship of the 1st thru | or 4th indoor unit assembly attached to the flame | frame, and a pillar. It is a top view which shows the state which installed the 1st thru | or 4th indoor unit assembly in the pillar of the building through the flame | frame. It is a perspective view of the 1st indoor unit assembly which shows the state where four indoor units were attached to the 1st unit support part of a frame. It is a perspective view which shows the positional relationship of an indoor unit, an exterior panel, a 1st decorative panel, and a 2nd decorative panel. It is a perspective view which shows the state which has arrange | positioned the fire extinguisher, the air compressor, and the remote controller around the pillar removed from the indoor unit.

[First Embodiment]
Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 16.

  FIG. 1 is a circuit diagram showing a piping system of an air conditioner 1 used for local cooling / heating in a large-scale space such as a production factory, a vehicle factory, and the like. As shown in FIG. 1, the air conditioner 1 includes an outdoor unit 2 and first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d as main elements.

  The outdoor unit 2 is installed outside, for example, a factory building 4 and houses various refrigeration cycle devices such as a compressor that compresses refrigerant, a heat exchanger, and an accumulator. The first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d are installed in a work area A to be air-conditioned inside the building 4. Each of the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d includes four indoor units 5.

  The liquid side main pipe 7A connected to the outdoor unit 2 is branched into first to fourth liquid side connection pipes 9a, 9b, 9c, and 9d via a branch header 8A. The gas side main pipe 7B connected to the outdoor unit 2 is branched into first to fourth gas side connection pipes 9e, 9f, 9g, and 9h via a branch header 8B. The first to fourth liquid side connection pipes 9a, 9b, 9c, 9d and the first to fourth gas side connection pipes 9e, 9f, 9g, 9h are connected to the first to fourth indoor unit assemblies 3a, 3b, 3c and 3d.

  The first to fourth liquid side connection pipes 9a, 9b, 9c, 9d are each provided with a liquid pipe 10. The first to fourth gas side connection pipes 9e, 9f, 9g, 9h are each provided with a gas pipe 11.

  The liquid pipes 10 of the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d are four branch liquid pipes 10a, 10b, 10c branched by three Y-shaped branch joints 12a, 12b, 12c, 10d. The branch liquid pipes 10a, 10b, 10c, and 10d are connected to the indoor unit 5, respectively.

  Similarly, the gas pipes 11 of the first to fourth gas side connection pipes 9e, 9f, 9g, 9h are four branch gas pipes 11a, 11b branched by three T-shaped branch joints 13a, 13b, 13c. , 11c, 11d. The branch gas pipes 11a, 11b, 11c, and 11d are connected to the indoor unit 5, respectively.

  Therefore, the refrigerant compressed by the outdoor unit 2 is distributed to the indoor units 5 of the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d, and the refrigerant discharged from the indoor unit 5 is again outdoor. Returned to the machine 2.

  Further, the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d include remote controllers 15a, 15b, 15c, and 15d, respectively. In the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d, various operations such as operation / stop of the indoor unit 5, temperature setting, operation switching, etc. are performed by the remote controllers 15a, 15b, 15c, 15d for each assembly. Is executable.

  The indoor units 5 of the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d have a common configuration. Therefore, in the present embodiment, one indoor unit 5 of the first indoor unit assembly 3a will be described as a representative.

  As shown in FIGS. 2 to 6, the indoor unit 5 includes a housing 20, an air heat exchanger 21, a blower 22, a control unit 23, and a duct unit 24 as main elements. The housing | casing 20 is a square box-shaped element which has the depth dimension D, the width dimension W, and the height dimension H, Comprising: For example, it is formed with the thin steel plate. The width dimension W and the height dimension H of the housing 20 are equal to each other, and the depth dimension D is set to be much smaller than the width dimension W and the height dimension H. Therefore, the housing 20 has a flat shape.

  The housing 20 includes a base 26, a front cover 27, a top cover 28, and a partition plate 29. The base 26 includes a back panel 30 that is erected and a dish-shaped bottom plate 31 that is fixed to the lower end of the back panel 30. A square suction port 32 is formed at a substantially central portion of the back panel 30. The bottom plate 31 protrudes horizontally from the lower end portion of the back panel 30 toward the front of the housing 20, and a drain port 33 is formed at the rear end portion of the bottom plate 31. The drain port 33 protrudes behind the housing 20.

  The front cover 27 includes a front panel 34 and a pair of side panels 35a and 35b. The front panel 34 is an element constituting the front surface of the housing 20. The front panel 34 faces the back panel 30, and a through hole 36 is formed at a substantially central portion of the front panel 34. Further, the lower end portion of the front panel 34 is fixed to the front end portion of the bottom plate 31 with a plurality of screws.

  The side panels 35 a and 35 b are folded at a right angle from the side edge of the front panel 34 toward the back panel 30. The rear ends of the side panels 35a and 35b are fixed to both sides of the back panel 30 with a plurality of screws.

  The top cover 28 is fixed to the upper end portion of the front panel 34 and the upper end portions of the side panels 35a and 35b with a plurality of screws. The top cover 28 covers a gap between the upper end portion of the front cover 27 and the upper portion of the back panel 30.

  The partition plate 29 is interposed between the upper portion of the back panel 30 and the upper end portion of the front cover 27. The partition plate 29 divides the interior of the housing 20 into two chambers, a first storage chamber 38 and a second storage chamber 39.

  The first storage chamber 38 has a larger volume than the second storage chamber 39, and the suction port 32 and the through hole 36 of the housing 20 are opened in the first storage chamber 38. The bottom plate 31 of the housing 20 constitutes the bottom of the first storage chamber 38, and the bottom plate 31 also functions as a drain pan. The second storage chamber 39 is located above the first storage chamber 38 and is covered with the top cover 28. In other words, the second storage chamber 39 can be exposed outside the housing 20 by loosening the screw and removing only the top cover 28.

  Further, brackets 40a and 40b are fixed to both sides of the back panel 30, respectively. The brackets 40 a and 40 b extend in the height direction of the housing 20 and project to the side of the housing 20.

  The air heat exchanger 21 is accommodated in the first accommodation chamber 38. The air heat exchanger 21 has a flat plate shape and includes a plurality of cooling fins 43 and a plurality of heat transfer tubes 44 through which refrigerant flows. The cooling fins 43 are elongated rectangular plates extending in the height direction of the housing 20, and are arranged in a line at intervals in the width direction of the housing 20. The heat transfer tubes 44 are arranged at intervals in the height direction and the depth direction of the housing 20, and are connected in series to form a plurality of flow paths (paths). Further, the heat transfer tubes 44 are thermally connected to the cooling fins 43.

  According to the present embodiment, the air heat exchanger 21 is erected along the back panel 30 inside the first housing chamber 38. As a result, the air heat exchanger 21 is exposed behind the housing 20 through the suction port 32.

  As best shown in FIG. 6, the air heat exchanger 21 has an upper end surface 21a and a lower end surface 21b. The upper end surface 21 a faces the partition plate 29 inside the first storage chamber 38. The lower end surface 21b is covered from below by a bottom plate 31 as a drain pan. The upper end surface 21a and the lower end surface 21b of the air heat exchanger 21 are inclined downward as they proceed from the back panel 30 toward the front panel 34, respectively.

  As a result, when water droplets due to condensation occur on the upper end surface 21a of the air heat exchanger 21, the water droplets easily flow away from the back panel 30 with the inclination of the upper end surface 21a. Similarly, when water droplets generated on the surface of the air heat exchanger 21 become drain water and reach the lower end portion of the air heat exchanger 21, the drain water is accompanied by the inclination of the lower end surface 21b of the air heat exchanger 21. Thus, the air can easily flow away from the back panel 30.

  Therefore, it is possible to prevent so-called water leakage that drain water flows out of the housing 20 from the suction port 32 of the back panel 30.

  A refrigerant pipe 45 connected to the air heat exchanger 21 is accommodated in the first accommodating chamber 38. In the present embodiment, the air heat exchanger 21 is disposed between the side panels 35a and 35b of the front cover 27 on the side of one side panel 35a in order to secure a space for accommodating the refrigerant pipe 45 inside the first storage chamber 38. I'm leaning on. As a result, a space is generated between the air heat exchanger 21 and the other side panel 35b, and the refrigerant pipes 45 are concentrated in the space.

  As shown in FIG. 3, the indoor unit 5 has a pair of connection ports 46 a and 46 b connected to the refrigerant pipe 45. The connection ports 46a and 46b penetrate the back panel 30 and protrude behind the housing 20, and the branch liquid pipe 10a and the branch gas pipe 11a are connected to the connection ports 46a and 46b. .

  Furthermore, as shown in FIG. 5, the center C1 of the air heat exchanger 21 is shifted to the center C2 of the front panel 34 of the front cover 27 as the air heat exchanger 21 is shifted toward the one side panel 35a. It is off. The center of the through hole 36 opened in the front panel 34 is located on the extension line of the center C1 of the air heat exchanger 21.

  As shown in FIGS. 4 and 5, the blower 22 is supported at the center of the front panel 34 of the housing 20. The blower 22 includes a cylindrical casing 50 and an impeller 51 accommodated in the casing 50 as main elements.

  The casing 50 has a first flange portion 52 and a second flange portion 53. The first flange portion 52 projects outward at one end of the casing 50 along the radial direction of the casing 50. The second flange portion 53 projects outward at the other end of the casing 50 along the radial direction of the casing 50. The first flange portion 52 is fixed to the front panel 34 with a plurality of screws at a position corresponding to the through hole 36.

  The impeller 51 is rotatably supported by the casing 50 so as to be coaxially positioned on the extension line of the center C1 of the air heat exchanger 21. The boss portion 55 of the impeller 51 incorporates a motor 56 that rotates the impeller 51.

  The control unit 23 is an element for controlling the air heat exchanger 21 and the blower 22 and is accommodated in the second accommodation chamber 39 of the housing 20. The control unit 23 includes various electrical components 58 such as a control board, a reactor, and a plurality of terminal blocks. The electrical component 58 is supported on the upper portion of the back panel 30.

  As shown in FIGS. 4 and 6, a cylindrical attachment 60 is attached to the blower 22. The attachment 60 has a flange portion 61 at one end. The flange portion 61 is fixed to the second flange portion 53 of the blower 22 with a plurality of screws. Thereby, the attachment 60 protrudes coaxially from the casing 50 of the blower 22 toward the front of the housing 20.

  A cylindrical ventilation register 62 is fitted into the attachment 60. The ventilation register 62 is an element for adjusting the amount of air blown from the blower 22 or arbitrarily changing the blowing direction, and protrudes coaxially from the attachment 60 toward the front of the housing 20. .

  As shown in FIGS. 4 and 6, the duct portion 24 has a cylindrical outer cylinder 65. The outer cylinder 65 is an element that continuously covers the blower 22, the attachment 60, and the ventilation register 62, and a flange portion 66 is formed at one end along the axial direction thereof. The flange portion 66 is continuous in the circumferential direction of the outer cylinder 65 and projects outwardly along the radial direction of the outer cylinder 65. The flange portion 66 is detachably supported on the front panel 34 by a plurality of screws.

  The outer cylinder 65 projects horizontally from the front panel 34 toward the front of the housing 20 in a state of surrounding the blower 22, the attachment 60, and the ventilation register 62. As shown in FIG. 6, the axis O <b> 1 passing through the center of the outer cylinder 65 passes through the center C <b> 1 of the air heat exchanger 21.

  The protruding end of the outer cylinder 65 is positioned in front of the housing 20 with respect to the ventilation register 62. A guide wall 67 is formed at the protruding end of the outer cylinder 65. The guide wall 67 is continuous in the circumferential direction of the outer cylinder 65 and protrudes toward the inside along the radial direction of the outer cylinder 65. The guide wall 67 defines a circular outlet 68 at the protruding end of the outer cylinder 65. The blowout port 68 faces the blower 22 through the ventilation register 62.

  As best shown in FIG. 6, the outer cylinder 65 of the duct portion 24 defines a ventilation path 70 between the blower 22, the attachment 60 and the ventilation register 62. One end of the ventilation path 70 reaches the front panel 34 of the housing 20, and the other end of the ventilation path 70 is closed by a guide wall 67.

  A plurality of air return holes 71 are formed in the front panel 34 of the housing 20 facing one end of the ventilation path 70. The air return hole 71 is located around the blower 22 and is opened to the first storage chamber 38 of the housing 20. Therefore, one end of the ventilation path 70 is communicated with the upstream side of the blower 22. Furthermore, in this embodiment, the inner surface of the outer cylinder 65 facing the ventilation path 70 and the inner surface of the guide wall 67 are covered with the heat insulating material 72.

  As shown in FIGS. 7 to 9, the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, and 3 d having the indoor unit 5 are frames dedicated to the outer periphery of the existing column 80 that becomes the skeleton of the building 4. 81 is used.

  The pillar 80 is an example of a foundation structure, and stands upright from the floor surface F of the building 4. According to this embodiment, the column 80 is a rectangular column having flat first to fourth outer peripheral surfaces 80a, 80b, 80c, and 80d. The first to fourth outer peripheral surfaces 80a, 80b, 80c, and 80d face the work area A in the building 4 and are oriented in four different directions. The first to fourth outer peripheral surfaces 80 a, 80 b, 80 c, and 80 d define the outer peripheral portion of the column 80.

  The first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are attached to the column 80 in common. Therefore, in the present embodiment, the mounting structure of the first indoor unit assembly 3a will be described as a representative, and the mounting structure of the second to fourth indoor unit assemblies 3b, 3c, 3d will be denoted by the same reference numeral. The description is omitted.

  As shown in FIGS. 13 and 14, the four indoor units 5 constituting the first indoor unit assembly 3 a are integrally connected along the height direction of the pillar 80 using a ladder-like subframe 82. Has been. The sub-frame 82 includes a pair of frame elements 83a and 83b and a plurality of beams 84 (only one is shown in FIG. 14).

  Each frame element 83a, 83b is made of angle steel having an L-shaped cross-sectional shape, for example, and has a pair of flat plate portions 85a, 85b orthogonal to each other. The frame elements 83 a and 83 b extend straight in the height direction of the column 80.

  The beam 84 is made of, for example, channel steel. The beams 84 are horizontally stretched between the frame elements 83a and 83b, and are arranged at intervals in the height direction of the columns 80.

  For this reason, the frame elements 83a and 83b are arranged in parallel with a space therebetween, and one flat plate portion 85a of the frame elements 83a and 83b is located on the same surface. Further, the interval between the frame elements 83 a and 83 b is set to be equal to the width dimension W of the indoor unit 5.

  As shown in FIGS. 13 and 14, brackets 40a and 40b projecting from both side portions of the housing 20 of the indoor unit 5 are fixed to the front surface of one flat plate portion 85a of the frame elements 83a and 83b with a plurality of screws. . Thus, the four indoor units 5 are detachably supported by the subframe 82 in a state where they are aligned in a line in the vertical direction. In the present embodiment, the beam 84 of the subframe 82 is located behind the boundary between adjacent indoor units 5.

  As shown in FIGS. 9 to 12, the frame 81 is composed of a lower structure 90 and an upper structure 91. The lower structure 90 includes four vertical bars 92a, 92b, 92c, and 92d, and a pair of connectors 93.

  Each of the vertical bars 92a, 92b, 92c, and 92d is made of angle steel having an L-shaped cross section, for example, and includes flat plate portions 94a and 94b that are orthogonal to each other. The vertical bars 92 a, 92 b, 92 c, and 92 d stand along the column 80 at positions corresponding to the four corners of the column 80.

  As shown in FIGS. 11 and 12, the connector 93 is an element that connects the column 80 and the vertical bars 92 a, 92 b, 92 c, and 92 d, and has an interval in the height direction of the column 80. Is arranged. Each connector 93 includes a pair of first horizontal bars 95a, 95b, a pair of second horizontal bars 96a, 96b, and first to fourth outer beams 97a, 97b, 97c, 97d. Yes.

  The first horizontal rails 95a and 95b are made of angle steel having an L-shaped cross-sectional shape, for example, and are arranged horizontally with a space therebetween so as to sandwich the column 80. The intermediate portion of one first horizontal rail 95 a is in contact with the first outer peripheral surface 80 a of the column 80. The middle portion of the other first horizontal rail 95 b is in contact with the third outer peripheral surface 80 c of the column 80. Both end portions of the first horizontal rails 95a and 95b project around the column 80 in a state of being parallel to each other.

  The second horizontal rails 96a and 96b are made of angle steel having an L-shaped cross-sectional shape, for example, and are horizontally spaced from each other so as to sandwich the column 80 from a direction orthogonal to the first horizontal rails 95a and 95b. Is arranged. An intermediate portion of one second horizontal rail 96 a is in contact with the second outer peripheral surface 80 b of the column 80. The middle portion of the other second horizontal rail 96 b is in contact with the fourth outer peripheral surface 80 d of the column 80. Both end portions of the second horizontal rails 96a and 96b project around the column 80 in a state of being parallel to each other.

  Further, the intermediate portion of the first horizontal bars 95 a and 95 b and the intermediate portion of the second horizontal bars 96 a and 96 b intersect each other around the column 80. The locations where the first horizontal rails 95a, 95b and the second horizontal rails 96a, 96b intersect are connected by a plurality of fasteners such as screws or bolts, respectively.

  As a result, the first horizontal bars 95a and 95b and the second horizontal bars 96a and 96b are combined in a lattice shape so as to surround the column 80. In other words, the first horizontal bars 95a and 95b and the second horizontal bars 96a and 96b sandwich the column 80 from two directions orthogonal to each other.

  The first to fourth outer beams 97a, 97b, 97c, and 97d are made of, for example, channel steel. The first outer beam 97a is stretched horizontally between the flat plate portion 94a of the vertical beam 92a and the flat plate portion 94a of the vertical beam 92b. The intermediate portion of the first outer beam 97a is coupled to one end of the second horizontal rails 96a and 96b with a plurality of fasteners such as screws or bolts.

  The second outer beam 97b is bridged horizontally between the flat plate portion 94b of the vertical beam 92b and the flat plate portion 94b of the vertical beam 92c. An intermediate portion of the second outer beam 97b is coupled to one end of the first horizontal bars 95a and 95b with a plurality of fasteners such as screws or bolts.

  The third outer beam 97c is stretched horizontally between the flat plate portion 94a of the vertical beam 92c and the flat plate portion 94a of the vertical beam 92d. An intermediate portion of the third outer beam 97c is coupled to the other ends of the second horizontal rails 96a and 96b by a plurality of fasteners such as screws or bolts.

  The fourth outer beam 97d is stretched horizontally between the flat plate portion 94b of the vertical beam 92d and the flat plate portion 94b of the vertical beam 92a. An intermediate portion of the fourth outer beam 97d is coupled to the other ends of the first horizontal bars 95a and 95b by a plurality of fasteners such as screws or bolts.

  Accordingly, the first to fourth outer beams 97a, 97b, 97c, and 97d surround the column 80 at positions away from the first to fourth outer peripheral surfaces 80a, 80b, 80c, and 80d of the column 80, and The four vertical bars 92a, 92b, 92c, and 92d are integrally connected.

  As a result, the four vertical bars 92 a, 92 b, 92 c, and 92 d are held in a posture that stands vertically from the floor surface F of the building 4 at positions diagonally away from the corners of the columns 80. The intervals between the adjacent vertical bars 92a, 92b, 92c, 92d are set to be equal to the interval between the frame elements 83a, 83b of the subframe 82.

  The upper structure 91 of the frame 81 basically has the same configuration as the lower structure 90. That is, the upper structure 91 includes four vertical bars 100a, 100b, 100c, and 100d, and a pair of connectors 101. Each of the vertical bars 100a, 100b, 100c, and 100d is made of angle steel having an L-shaped cross-sectional shape, for example, and includes flat plate portions 102a and 102b that are orthogonal to each other. The vertical bars 100 a, 100 b, 100 c, and 100 d stand along the column 80 at positions corresponding to the four corners of the column 80.

  As shown in FIG. 10, the connecting tool 101 is an element that connects the column 80 and the vertical bars 100 a, 100 b, 100 c, and 100 d, and is arranged at intervals in the height direction of the column 80. Yes. Each connector 101 includes a pair of first horizontal bars 104a and 104b, a pair of second horizontal bars 105a and 105b, and first to fourth outer beams 106a, 106b, 106c, and 106d. Yes.

  The first horizontal rails 104a and 104b are made of, for example, angle steel having an L-shaped cross-sectional shape, and are arranged horizontally at intervals so as to sandwich the column 80 therebetween. The intermediate portion of the first horizontal rail 104 a is in contact with the first outer peripheral surface 80 a of the column 80. An intermediate portion of the first horizontal rail 104 b is in contact with the third outer peripheral surface 80 c of the column 80. Both end portions of the first horizontal rails 104a and 104b project around the column 80 in a state of being parallel to each other.

  The second horizontal bars 105a and 105b are made of angle steel having an L-shaped cross-sectional shape, for example, and are horizontally spaced from each other so as to sandwich the column 80 from a direction orthogonal to the first horizontal bars 104a and 104b. Are arranged. An intermediate portion of the second horizontal rail 105 a is in contact with the second outer peripheral surface 80 b of the column 80. An intermediate portion of the second horizontal rail 105 b is in contact with the fourth outer peripheral surface 80 d of the column 80. Both end portions of the second horizontal bars 105a and 105b project around the column 80 in a state of being parallel to each other.

  Further, the intermediate part of the first horizontal bars 104 a and 104 b and the intermediate part of the second horizontal bars 105 a and 105 b intersect each other around the column 80. The locations where the first horizontal bars 104a, 104b and the second horizontal bars 105a, 105b intersect are respectively coupled by a plurality of fasteners such as screws or bolts.

  As a result, the first horizontal rails 104 a and 104 b and the second horizontal rails 105 a and 105 b are combined in a lattice shape so as to surround the column 80. In other words, the first horizontal rails 104a and 104b and the second horizontal rails 105a and 105b sandwich the column 80 from two directions orthogonal to each other.

  The first to fourth outer beams 106a, 106b, 106c, 106d are made of, for example, channel steel. The first outer beam 106a is horizontally stretched between the flat plate portion 102a of the vertical beam 100a and the flat plate portion 102a of the vertical beam 100b. The intermediate portion of the first outer beam 106a is coupled to one end of the second horizontal bars 105a and 105b with a plurality of fasteners such as screws or bolts.

  The second outer beam 106b is stretched horizontally between the flat plate portion 102b of the vertical beam 100b and the flat plate portion 102b of the vertical beam 100c. The intermediate portion of the second outer beam 106b is coupled to one end of the first horizontal bars 104a and 104b with a plurality of fasteners such as screws or bolts.

  The third outer beam 106c is bridged horizontally between the flat plate portion 102a of the vertical beam 100c and the flat plate portion 102a of the vertical beam 100d. An intermediate portion of the third outer beam 106c is coupled to the other ends of the second horizontal bars 105a and 105b with a plurality of fasteners such as screws or bolts.

  The fourth outer beam 106d is stretched horizontally between the flat plate portion 102b of the vertical beam 100d and the flat plate portion 102b of the vertical beam 100a. An intermediate portion of the fourth outer beam 106d is coupled to the other ends of the first horizontal bars 104a and 104b by a plurality of fasteners such as screws or bolts.

  Therefore, the first to fourth outer beams 106a, 106b, 106c, and 106d surround the column 80 at positions away from the first to fourth outer peripheral surfaces 80a, 80b, 80c, and 80d of the column 80. The four vertical bars 100a, 100b, 100c, and 100d are integrally connected.

  Therefore, the four vertical bars 100a, 100b, 100c, and 100d are held in a vertically upright posture at positions away from the corners of the pillars 80 in a diagonal direction. The intervals between the adjacent vertical bars 100a, 100b, 100c, 100d are set to be equal to the interval between the frame elements 83a, 83b of the subframe 82.

  As shown in FIGS. 10 and 12, the lower ends of the vertical bars 100a, 100b, 100c, 100d of the upper structure 91 are overlapped with the upper ends of the vertical bars 92a, 92b, 92c, 92d of the lower structure 90. Together with a plurality of fasteners such as screws or bolts. Thereby, the lower structure 90 and the upper structure 91 are assembled as an integral structure.

  As shown in FIGS. 7 to 9, the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, and 3 d having four indoor units 5 arranged in a line in the vertical direction are the upper structure 91 of the frame 81. It is supported to be selectively removable.

  According to this embodiment, the height of the lower structure 90 rising from the floor surface F of the building 4 is 2 m, for example, and is higher than the average height of the worker M who is active in the work area A. For this reason, the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d are positioned right above the work area A.

  In the first indoor unit assembly 3a, the flat plate portions 85a of the frame elements 83a and 83b constituting the subframe 82 are fixed to the flat plate portion 102a of the vertical bars 100a and 100b with a plurality of fasteners such as screws or bolts. Has been. In a state in which the first indoor unit assembly 3 a is fixed to the upper structure 91, the four indoor units 5 are arranged in a line along the pillars 80, and the casing 20 of each indoor unit 5 is the first of the pillars 80. 1 faces the outer peripheral surface 80a.

  In the second indoor unit assembly 3b, the flat plate portion 85a of the frame elements 83a and 83b constituting the subframe 82 is fixed to the flat plate portion 102b of the vertical bars 100b and 100c with a plurality of fasteners such as screws or bolts. Has been. In a state where the second indoor unit assembly 3 b is fixed to the upper structure 91, the four indoor units 5 are arranged in a line along the pillar 80, and the housing 20 of each indoor unit 5 is the first of the pillar 80. 2 faces the outer peripheral surface 80b.

  In the third indoor unit assembly 3c, the flat plate portion 85a of the frame elements 83a and 83b constituting the subframe 82 is fixed to the flat plate portion 102a of the vertical rails 100c and 100d with a plurality of fasteners such as screws or bolts. Has been. In a state where the third indoor unit assembly 3 c is fixed to the upper structure 91, the four indoor units 5 are arranged in a line along the pillars 80, and the casing 20 of each indoor unit 5 is the first of the pillars 80. 3 faces the outer peripheral surface 80c.

  In the fourth indoor unit assembly 3d, the flat plate portions 85a of the frame elements 83a and 83b constituting the subframe 82 are fixed to the flat plate portion 102b of the vertical rails 100d and 100a with a plurality of fasteners such as screws or bolts. Has been. In a state in which the fourth indoor unit assembly 3 d is fixed to the upper structure 91, the four indoor units 5 are arranged in a line along the pillars 80, and the housing 20 of each indoor unit 5 is the first of the pillars 80. 4 faces the outer peripheral surface 80d.

  7 to 9, when the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are fixed to the upper structure 91, the duct portion 24 of the indoor unit 5 is centered on the column 80. Are projected horizontally in the four directions.

  At the same time, the casings 20 of all the indoor units 5 and the vertical bars 100a, 100b, 100c, 100d of the upper structure 91 cooperate with each other to continuously surround the column 80 in the circumferential direction. Therefore, an upper space S1 is formed between the outer periphery of the column 80 and the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d.

  As shown in FIGS. 7, 8, 15, and 16, the lower structure 90 of the frame 81 removed from the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d has a plurality of exterior panels 110. A plurality of filters 111 are selectively removably supported. The exterior panel 110 and the filter 111 are rectangular plate-like elements having the same size, and are interchangeable.

  The exterior panel 110 is attached to the lower structure 90 with a plurality of fasteners such as screws or bolts so as to straddle between the adjacent vertical bars 92a, 92b, 92c, 92d. The filter 111 includes a square outer frame 112 and a filter element 113 that filters air. The outer frame 112 has four sides and is attached to the lower structure 90 with a plurality of fasteners such as screws or bolts so as to straddle between adjacent vertical bars 92a, 92b, 92c, and 92d. The filter element 113 is formed in a square plate shape, and is removably supported on the outer frame 112 through a slit 114 formed on one side of the outer frame 112.

  In this embodiment, the exterior panel 110 covers and hides the lower structure 90, the second outer peripheral surface 80b, the third outer peripheral surface 80c, and the fourth outer peripheral surface 80d of the column 80. The filter 111 is arranged in the height direction of the column 80 below the first indoor unit assembly 3a, and covers the first outer peripheral surface 80a of the column 80.

  As a result, the exterior panel 110 and the filter 111 cooperate with each other to surround the lower structure 90 of the frame 81. A gap between the floor surface F of the building 4 and the exterior panel 110 and a gap between the floor surface F of the building 4 and the filter 111 are closed by a plurality of baseboards 115.

  In a state where the exterior panel 110 and the filter 111 are attached to the lower structure 90, a lower space S2 is formed between the outer peripheral portion of the column 80 and the exterior panel 110 and the filter 111. The lower space S2 communicates with the upper space S1 and defines the suction passage 117 in cooperation with the upper space S1. The suction passage 117 surrounds the column 80, and the suction ports 32 of all the indoor units 5 are opened in the suction passage 117.

  In the present embodiment, the upper end of the suction passage 117 is closed by a plurality of closing plates 118 shown in FIG. The closing plate 118 is attached to the upper end of the upper structure 91. For this reason, the suction passage 117 is partitioned from the work area A, which is a space to be air-conditioned, and communicates with the work area A via the filter 111.

  As shown in FIG. 9, the suction passage 117 includes the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d and the first to fourth gas side connection pipes 9e connected to all the indoor units 5. , 9f, 9g, and 9h also serve as piping space. Each of the connection pipes 9 a to 9 h passes through the closing plate 118 and is guided to the upper part of the column 80. At the same time, the drain pipes 119 connected to the drain ports 33 of all the indoor units 5 are guided to the upper part of the column 80 through the suction passage 117.

  Further, even the wiring 121 electrically connected to the control units 23 of all the indoor units 5 is led to the upper part of the column 80 through the suction passage 117.

  In the first embodiment, when the indoor units 5 of the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d start to operate, the blower 22 of the indoor unit 5 passes through the through hole 36 and the housing 20 The air in the first storage chamber 38 is sucked. Thereby, a negative pressure acts on the suction port 32 of the housing 20. Since the suction port 32 is opened to the suction passage 117 around the column 80, the air inside the building 4 is sucked into the suction passage 117 through the filter 111. Since the filter 111 is attached to the lower structure 90 of the frame 81, air near the floor surface F of the work area A is sucked into the suction passage 117.

  The air sucked into the blower 22 from the suction passage 117 passes through the air heat exchanger 21. The air heat exchanger 21 changes the air going to the blower 22 to cold air or warm air by heat exchange between the air going to the blower 22 and the refrigerant flowing through the heat transfer tube 44. The heat-exchanged air passes through the ventilation register 62 and then blows out horizontally from the outlet 68 of the duct portion 24 toward the area above the work area A where the worker M is active.

  For this reason, the air heat-exchanged toward the four sides of the pillar 80 can be sent out, and local air conditioning in the work area A located around the pillar 80 or stratified air conditioning using the pillar 80 is possible.

  Furthermore, according to the present embodiment, a part of the air that passes through the ventilation register 62 and travels toward the outlet 68 is ventilated by the guide wall 67 that defines the outlet 68, as indicated by the dashed arrow in FIG. 6. 70. Since the ventilation path 70 communicates with the upstream side of the blower 22 through the air return hole 71 on the front surface of the housing 20, the air guided to the ventilation path 70 passes through the first return chamber 38 from the air return hole 71. Is sucked into the blower 22 via.

  Thereby, part of the air that has passed through the ventilation register 62 returns to the direction of the housing 20 through the ventilation path 70. In other words, the outer peripheral surface of the ventilation register 62 is directly exposed to the air flow heat-exchanged by the air heat exchanger 21, and the temperature difference between the outer peripheral surface and the inner peripheral surface of the ventilation register 62 is small. Become.

  As a result, for example, even if the cold air accompanying the cooling operation passes through the ventilation register 62 under the conditions of high temperature and high humidity, condensation hardly occurs on the outer peripheral surface of the ventilation register 62. In addition, since the inner surface of the outer cylinder 65 facing the ventilation path 70 and the inner surface of the guide wall 67 are covered with the heat insulating member 72, it is possible to prevent condensation on the outer peripheral surface of the outer cylinder 65.

  Therefore, it is possible to prevent so-called water splashing, in which water droplets are blown from the outlet 68 during the cooling operation, and to avoid the phenomenon of water droplets dripping from the outer cylinder 65.

  According to the first embodiment, the frame 81 is erected from the floor surface F of the building 4 so as to surround the pillar 80, and the first to fourth outer beams 97a, 97b, 97c, 97d of the lower structure 90 and The first to fourth outer beams 106 a, 106 b, 106 c, 106 d of the upper structure 91 are separated from the outer peripheral portion of the column 80.

  Therefore, in a state where the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d, the exterior panel 110, and the filter 111 are attached to the frame 81, the pillar 80 has the first to fourth indoor unit assemblies 3a, 3b. , 3c, 3d, the exterior panel 110, and the filter 111, and a suction passage 117 partitioned from the work area A in the building 4 is formed around the pillar 80.

  The suction ports 32 of all the indoor units 5 supported by the frame 81 suck in air from the suction passage 117, so that a route for guiding air to the air heat exchanger 21 of the indoor unit 5 is not exposed to the work area A. .

  Furthermore, in this embodiment, the 1st thru | or 4th liquid side connection piping 9a, 9b, 9c, 9d connected to the connection port 46a, 46b of the indoor unit 5 and the 1st thru | or 4th gas side connection piping 9e, 9f, 9g, 9h, the drain pipe 119 connected to the drain port 33 of the indoor unit 5 and the wiring 121 connected to the control unit 23 of the indoor unit 5 are routed all together through the suction passage 117.

  Therefore, the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d, the first to fourth gas side connection pipes 9e, 9f, 9g, 9h, the drain pipe 119 and the wiring 121 are provided in the work area A. The appearance of the work area A can be maintained satisfactorily without being exposed.

  As a result, although the plurality of indoor units 5 are installed on the outer peripheral portion of the pillar 80, the surroundings of the indoor units 5 are neatly gathered, and the presence of the indoor units 5 can be reduced.

  In addition, by providing the exterior panel 110 and the filter 111, the sense of unity between the pillar 80 and the indoor unit 5 is improved, and a sense of incongruity does not occur. Therefore, it can avoid that the indoor unit 5 becomes an unnatural form attached to the existing pillar 80 later, and the air conditioning apparatus 1 having an original appearance can be provided.

  In addition, the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d, the first to fourth gas side connection pipes 9e, 9f, 9g, 9h, the drain pipe 119 and the wiring 121 are connected to the exterior panel 110 and The filter 111 is shielded from the work area A. Therefore, using the exterior panel 110 and the filter 111, the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d, the first to fourth gas side connection pipes 9e, 9f, 9g, 9h, the drain pipe 119 and the wiring 121 can be protected, the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d, the first to fourth gas side connection pipes 9e, 9f, 9g, 9h, the drain pipe 119. In addition, damage to the wiring 121 can be prevented in advance.

  According to the first embodiment, the box-shaped housing 20 that is an outline of the indoor unit 5 stops to accommodate the flat air heat exchanger 21 and some electrical components 58, and the blower 22 It is supported on the front surface of the body 20 and covered with a dedicated duct portion 24. By adopting this configuration, the housing 20 can be made as thin and compact as possible. This is also advantageous in suppressing the presence of the indoor unit 5.

[Modification of First Embodiment]
FIG. 17 discloses a modification of the first embodiment.

  The modification is different from the first embodiment in that the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d are attached to the lower structure 90 of the frame 81. Other configurations are the same as those in the first embodiment. In the example shown in FIG. 17, the third and fourth indoor unit assemblies 3c and 3d are not shown because they are hidden behind the first and second indoor unit assemblies 3a and 3b.

  As shown in FIG. 17, the 1st thru | or 4th indoor unit assembly 3a, 3b, 3c, 3d is installed in the outer peripheral part of the pillar 80 via the flame | frame 81 similarly to 1st Embodiment. The four indoor units 5 included in the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d are arranged in a line in the vertical direction from the floor surface F of the building 4.

  Therefore, the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d are in positions facing the worker M in the work area A, and the air conditioned in the indoor unit 5 flows from the outlet 68 to the floor surface F. It comes to blow out in parallel.

  Further, the plurality of exterior panels 110 and the filter 111 are attached to the upper structure 91 of the frame 81. In the case of this embodiment, the filters 111 are arranged in a line in the height direction of the column 80 directly above the second indoor unit assembly 3b.

  According to such a modification of the first embodiment, the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d are installed in the lower structure 90 of the frame 81. The blown air can be blown out parallel to the floor F from a low position in the work area A. As a result, stratified air conditioning that pushes high-temperature air in the vicinity of the floor surface F toward the upper side of the building 4 is possible, and the overall temperature difference of the work area A can be suppressed to a small level.

  In the first embodiment, the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d are arranged so as to surround the pillar 80, and air is blown out in four directions around the pillar 80. It is not limited to.

  For example, when the fourth outer peripheral surface 80d of the column 80 is out of the work area A, the indoor unit 5 is installed at a location corresponding to the first to third outer peripheral surfaces 80a, 80b, 80c of the column 80, and the column The fourth outer peripheral surface 80d of 80 may be covered with at least one of the exterior panel 110 and the filter 111. That is, air may be blown out in three directions around the column 80, and there are no particular restrictions on the air blowing direction.

  Further, the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d are attached to intermediate portions along the height direction of the frame 81 so as to straddle between the lower structure 90 and the upper structure 91 of the frame 81. May be. In this case, the exterior panel 110 and the filter 111 can be arranged at any position on at least one of the upper side and the lower side of the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d.

  In other words, the number and position of the exterior panel 110 and the filter 111 are not particularly limited, and can be appropriately changed according to the position of the indoor unit 5 along the height direction of the pillar 80 or the environment of the work area A to be air-conditioned. .

  In the first embodiment, each of the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d includes four indoor units 5, but the number of indoor units 5 is one, two, Three or five or more units may be used, and the number of indoor units 5 is not particularly limited.

  At the same time, the sub-frame 82 for integrally connecting the plurality of indoor units 5 is not an essential element, and the plurality of indoor units 5 may be individually attached to the frame 81 one by one.

[Second Embodiment]
18 to 24 disclose a second embodiment.

  The second embodiment is different from the first embodiment mainly in the configuration of the frame 200 that supports the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d on the support column 80. Other configurations are basically the same as those in the first embodiment. Therefore, in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 19 to FIG. 21, the frame 200 includes four first vertical bars 201a, 201b, 201c, 201d, a plurality of first to fourth horizontal bars 202a, 202b, 202c, 202d and a first one. The fourth unit support portions 203a, 203b, 203c, and 203d are provided as main elements.

  The first vertical bars 201a, 201b, 201c, and 201d are made of angle steel having an L-shaped cross section, for example, and have flat plate portions 205a and 205b that are orthogonal to each other. The first vertical bars 201 a, 201 b, 201 c, and 201 d stand along the column 80 in a state where the intersecting portions of the flat plate portions 205 a and 205 b abut against the four corners of the column 80.

  The first to fourth horizontal rails 202a, 202b, 202c, 202d are made of, for example, channel steel. As shown in FIG. 21, the first horizontal rail 202a is horizontally bridged between the flat plate portion 205a of the first vertical rail 201a and the flat plate portion 205a of the second vertical rail 201b, and the column They are arranged at intervals in the height direction of 80. The first horizontal rail 202 a is in contact with the first outer peripheral surface 80 a of the column 80.

  The second horizontal rail 202b is horizontally stretched between the flat plate portion 205b of the second vertical rail 201b and the flat plate portion 205b of the third vertical rail 201c, and is spaced in the height direction of the pillar 80. Is arranged. The second horizontal rail 202 b is in contact with the second outer peripheral surface 80 b of the column 80.

  The third horizontal rail 202c is horizontally stretched between the flat plate portion 205a of the third vertical rail 201c and the flat plate portion 205a of the fourth vertical rail 201d, and is spaced in the height direction of the pillar 80. Is arranged. The third horizontal rail 202 c is in contact with the third outer peripheral surface 80 c of the column 80.

  The fourth horizontal rail 202d is horizontally stretched between the flat plate portion 205b of the fourth vertical rail 201d and the flat plate portion 205b of the first vertical rail 201a, and is spaced in the height direction of the pillar 80. Is arranged. The fourth horizontal rail 202d is in contact with the fourth outer peripheral surface 80c of the column 80.

As a result, the first to fourth horizontal rails 202a, 202b, 202c, 202d are combined in a frame shape so as to surround the outer periphery of the column 80 at a plurality of locations along the height direction of the column 80. In other words, the first to fourth horizontal bars 202a, 202b, 202c, 202d cooperate with each other to sandwich the column 80 from two directions orthogonal to each other. The first to fourth unit support portions 203a, 203b, 203c and 203d are elements corresponding to the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d, and have a common configuration. Therefore, in the present embodiment, the first unit support portion 203a corresponding to the first indoor unit assembly 3a will be described as a representative, and the second to fourth unit support portions 203b, 203c, and 203d will be described as the first. The same reference numerals as those of the unit support portion 203a are attached, and the description thereof is omitted.

  As shown in FIGS. 20 to 22, the first unit support portion 203a includes a pair of outer rails 207a and 207b, a plurality of cross beams 208, and a plurality of support stays 209 as main elements.

  The outer rails 207a and 207b are made of angle steel having an L-shaped cross-sectional shape, for example. The cross beam 208 is made of, for example, channel steel. The horizontal beams 208 are horizontally stretched between the outer rails 207a and 207b, and are arranged at intervals in the height direction of the columns 80. Therefore, the outer rails 207a and 207b connected by the horizontal beam 208 are arranged in parallel with a space between each other. The interval between the outer rails 207a and 207b is set to be equal to the width dimension W of the indoor unit 5.

  The support stay 209 is made of, for example, channel steel. The support stay 209 is spanned between both ends of the first horizontal rail 202a and both ends of the horizontal rail 208 of the first unit support portion 203a. The support stay 209 extends horizontally in a direction away from the first outer peripheral surface 80 a of the column 80.

  Due to the presence of the support stay 209, the first unit support portion 203a is connected to the column 80 via the first vertical beam 201a, the second vertical beam 201b, and the first horizontal beam 202a. As a result, the outer frames 207a and 207b of the first unit support portion 203a are arranged so as to face the first vertical beam 201a and the second vertical beam 201b at a position away from the first outer peripheral surface 80a of the column 80. It stands along the height direction of 80.

  As shown in FIGS. 20 and 21, the vertical bars 207a and 207b of the second unit support portion 203b are separated from the second outer peripheral surface 80b of the column 80 at the second vertical bars 201b and the third It stands up along the height direction of the pillar 80 so as to face the vertical beam 201c.

  The vertical bars 207a and 207b of the third unit support portion 203c are arranged at positions away from the third outer peripheral surface 80c of the column 80 so as to face the third vertical beam 201c and the fourth vertical beam 201d. Stands along the height direction.

  Further, the vertical bars 207a and 207b of the fourth unit support portion 203d are arranged so as to face the fourth vertical bars 201d and the first vertical bars 201a at positions away from the fourth outer peripheral surface 80d of the columns 80. It stands along the height direction of 80.

  As shown in FIGS. 18 and 19, the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d having the four indoor units 5 are located at a position higher than the height of the worker M and the first of the frame 200. The first to fourth unit support portions 203a, 203b, 203c, and 203d are selectively removably supported.

  In the first indoor unit assembly 3a, the brackets 40a and 40b of each indoor unit 5 are fixed to the outer rails 207a and 207b of the first unit support portion 203a with a plurality of fasteners such as screws or bolts. Yes. In a state in which the first indoor unit assembly 3a is fixed to the first unit support portion 203a, the four indoor units 5 are arranged in a line along the height direction of the pillar 80, and the housing of each indoor unit 5 is provided. The body 20 faces the first outer peripheral surface 80a of the column 80.

  In the second indoor unit assembly 3b, the brackets 40a and 40b of each indoor unit 5 are fixed to the outer rails 207a and 207b of the second unit support portion 203b with a plurality of fasteners such as screws or bolts. Yes. In a state where the second indoor unit assembly 3b is fixed to the second unit support portion 203b, the four indoor units 5 are arranged in a line along the height direction of the pillar 80, and the housings of the indoor units 5 are arranged. The body 20 faces the second outer peripheral surface 80b of the column 80.

  In the third indoor unit assembly 3c, the brackets 40a and 40b of each indoor unit 5 are fixed to the outer rails 207a and 207b of the third unit support portion 203c with a plurality of fasteners such as screws or bolts. Yes. In a state where the third indoor unit assembly 3c is fixed to the third unit support portion 203c, the four indoor units 5 are arranged in a line along the height direction of the pillar 80, and the housings of the indoor units 5 are arranged. The body 20 faces the third outer peripheral surface 80c of the column 80.

  In the fourth indoor unit assembly 3d, the brackets 40a and 40b of each indoor unit 5 are fixed to the outer rails 207a and 207b of the fourth unit support portion 203d with a plurality of fasteners such as screws or bolts. Yes. In a state where the fourth indoor unit assembly 3d is fixed to the fourth unit support portion 203d, the four indoor units 5 are arranged in a line along the height direction of the pillar 80, and the housings of the indoor units 5 are arranged. The body 20 faces the fourth outer peripheral surface 80d of the column 80.

  As shown in FIGS. 18, 19, and 21, when the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d are installed on the pillar 80, the indoor units 5 adjacent to each other in the circumferential direction of the pillar 80. A gap G is formed between them. The gap G extends in the height direction of the column 80 so as to face the four corners of the column 80. The gap G has such a size that an operator can insert a hand or a tool between the indoor unit 5 and the pillar 80.

  The gap G is covered with a plurality of first decorative panels 212. The first decorative panel 212 has an elongated shape extending in the height direction of the pillar 80. The first decorative panel 212 is fixed to the outer rails 207a, 207b of the first to fourth unit support portions 203a, 203b, 203c, 203d adjacent to each other with a plurality of fasteners such as screws or bolts. Therefore, the first decorative panel 212 can be freely removed by loosening the fastener.

  20 and 21, the first decorative panel 212 continuously surrounds the pillar 80 in the circumferential direction in cooperation with the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d. Yes. Therefore, an upper space S1 is formed between the outer periphery of the column 80 and the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d.

  As shown in FIGS. 19 and 20, a plurality of exterior panels 110 and a plurality of filters (not shown) are selectively provided in regions outside the first to fourth indoor unit assemblies 3 a, 3 b, 3 c, 3 d in the frame 200. Removably supported. The exterior panel 110 and the filter are located below the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d.

  The exterior panel 110 is attached to the outer rails 207a and 207b of the adjacent first to fourth unit support portions 203a, 203b, 203c, and 203d with a plurality of fasteners such as screws or bolts. The filter is the same as the filter 111 of the first embodiment, and includes a square outer frame that removably supports the filter element. The outer frame is attached to the outer bars 207a and 207b of the adjacent first to fourth unit support portions 203a, 203b, 203c, and 203d with a plurality of fasteners such as screws or bolts.

  Further, the gap between the exterior panels 110 adjacent to each other in the circumferential direction of the pillar 80 and the gap between the exterior panels 110 adjacent to each other in the circumferential direction of the pillar 80 and the filter are covered with the second decorative panel 213. . Similar to the first decorative panel 212, the second decorative panel 213 has an elongated shape extending in the height direction of the pillar 80. The second decorative panel 213 is fixed to the outer rails 207a, 207b of the first to fourth unit support portions 203a, 203b, 203c, 203d adjacent to each other with a plurality of fasteners such as screws or bolts. Therefore, the exterior panel 110, the filter, and the second decorative panel 213 surround the frame 200 and the pillar 80 in cooperation with each other.

  In a state where the exterior panel 110, the filter, and the second decorative panel 213 are attached to the outer rails 207a and 207b of the first to fourth unit support portions 203a, 203b, 203c, and 203d, the outer peripheral portion of the column 80 and the exterior panel 110 A lower space S2 is formed between the filter and the second decorative panel 213. The lower space S2 communicates with the upper space S1 and defines a suction passage 215 around the pillar 80 in cooperation with the upper space S1. The suction passage 215 extends over the entire length of the frame 200.

  In the present embodiment, the upper end of the suction passage 215 is closed by a plurality of closing plates 216 shown in FIG. The closing plate 216 is attached to the upper end of the frame 200. For this reason, the suction passage 215 is partitioned from the work area A, which is a space to be air-conditioned, and communicates with the work area A through a filter. All the indoor units 5 attached to the frame 200 suck air from the suction passage 215.

  As shown in FIG. 21, the suction passage 215 includes the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d and the first to fourth gas side connection pipes 9e connected to all the indoor units 5. , 9f, 9g, and 9h also serve as piping space. Each of the connection pipes 9 a to 9 h passes through the closing plate 216 and is guided to the upper part of the column 80.

  At the same time, the drain pipe 119 connected to the drain ports 33 of all the indoor units 5 is guided to the upper part of the column 80 through the suction passage 215. Furthermore, the wiring 121 electrically connected to all the indoor units 5 is led to the upper part of the column 80 through the suction passage 215.

  As shown in FIG. 24, for example, a fire extinguisher 220, an air compressor 221 and first to fourth indoor unit assemblies are disposed around a column 80 which is detached from the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d. Ancillary equipment such as a remote controller 222 for operating 3a, 3b, 3c, 3d is arranged.

  The fire extinguisher 220 is accommodated in the lower space S2, which is a part of the suction passage 215, for example, below the third indoor unit assembly 3c. The exterior panel 110 is removed from the frame 200 at a position corresponding to the fire extinguisher 220. Therefore, the fire extinguisher 220 is exposed to the work area A without being covered with the exterior panel 110.

  For example, the air compressor 221 and the remote controller 222 are accommodated in a lower space S2 that is a part of the suction passage 215 below the first indoor unit assembly 3a. The air compressor 221 and the remote controller 222 are lined up in the height direction of the pillar 80 and are covered with an exterior panel 110 attached to the frame 200.

  Thereby, the theft of the air compressor 221 and the remote controller 222 can be prevented. In addition, it is possible to prevent a third party from operating the remote controller 222 without permission from the administrator of the air conditioner 1 or the operator who performs maintenance of the air conditioner 1.

  When the fire extinguisher 220, the air compressor 221 and the remote controller 222 are housed in the lower space S2, the suction passage 215 is provided with a plurality of inner covers 223 as shown in FIG. It is good to partition from. As a result, the air in the work area A can be prevented from being sucked into the suction passage 215 without passing through the filter, and dust can be prevented from adhering to the air heat exchanger 21 of the indoor unit 5.

  According to the second embodiment, the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d, the exterior panel 110, the first decorative panel 212, the second decorative panel 213, and the filter are attached to the frame 200. In the state, a suction passage 215 partitioned from the work area A in the building 4 is formed around the pillar 80 as in the first embodiment.

  Since the suction ports 32 of all the indoor units 5 supported by the frame 200 suck in air from the suction passage 215, a route for guiding air to the air heat exchanger 21 of the indoor unit 5 is not exposed to the work area A. .

  At the same time, the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d connected to the connection ports 46a, 46b of the indoor unit 5 and the first to fourth gas side connection pipes 9e, 9f, 9g, 9h, the drain pipe 119 connected to the drain port 33 of the indoor unit 5 and the wiring 121 connected to the control unit 23 of the indoor unit 5 are collectively routed through the suction passage 215. Therefore, the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d, the first to fourth gas side connection pipes 9e, 9f, 9g, 9h, the drain pipe 119 and the wiring 121 are provided in the work area A. The appearance of the work area A can be maintained satisfactorily without being exposed.

  Therefore, although the plurality of indoor units 5 are installed on the outer peripheral portion of the pillar 80, the surroundings of the indoor units 5 are neatly gathered, and the presence of the indoor units 5 can be reduced.

  In addition, by providing the exterior panel 110, the first decorative panel 212, the second decorative panel 213, and the filter 111, the sense of unity between the pillar 80 and the indoor unit 5 is improved. Similar effects can be obtained.

  According to this embodiment, in the state where the first decorative panel 212 is removed from the first to fourth unit support portions 203a, 203b, 203c, 203d, the gap between the indoor units 5 adjacent to each other in the circumferential direction of the column 80. G is released. The gap G communicates with the upper space S1, which is a part of the suction passage 215, and has a size sufficient for an operator to insert a hand or a tool.

  Therefore, for example, first to fourth liquid side connection pipes 9a, 9b, 9c, 9d connected to the indoor unit 5, first to fourth gas side connection pipes 9e, 9f, 9g, 9h, a drain pipe 119, and When performing the maintenance of the wiring 121, it is only necessary to remove the first decorative panel 212 alone.

  In other words, many indoor units 5 can perform various maintenance operations through the gap G while being fixed to the frame 200 as they are, and the workability is improved.

  Furthermore, by storing various auxiliary devices such as the fire extinguisher 220, the air compressor 221 and the remote controller 222 in the lower space S2, the space that can be effectively used as the work area A can be expanded. Therefore, the feeling of opening of the work area A can be enhanced.

  In the second embodiment, the accessory devices such as the air compressor 221 and the remote controller 222 housed in the lower space S2 are covered with the exterior panel 110. However, for example, the accessory is attached to the inner surface of the exterior panel 110 facing the lower space S2. You may make it attach an apparatus.

  Furthermore, the foundation structure is not limited to a pillar of a building, and may be, for example, a beam or a brace straddling between adjacent pillars. Therefore, the indoor units are not limited to being arranged in a row in the vertical direction, and may be arranged in a row in a horizontal direction along the beam or in an oblique direction along the brace.

  At the same time, the foundation structure is not limited to the pillars and beams that form the skeleton of the building, but may be a dedicated support column that stands up from the floor of the building to support the indoor unit assembly.

  In addition, even if it is a pillar, it is not restricted to a square pillar, For example, you may comprise with H-section steel and I-section steel, and it is good also as a structure which combined the some shape steel.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Air conditioning apparatus, 5 ... Indoor unit, 21 ... Air heat exchanger, 32 ... Air inlet, 80 ... Substructure, 81, 200 ... Frame, 110, 212, 213 ... Panel (exterior panel, 1st makeup) Panel, second decorative panel), 117, 215 ... suction passage, A ... space (working area).

Claims (9)

A frame that is assembled to a foundation structure located in a space to be air-conditioned and surrounds the outer periphery of the foundation structure;
A plurality of heat exchangers that are attached to the frame so as to face the outer peripheral portion of the foundation structure and have a heat exchanger that exchanges heat between the refrigerant and the air, and that are formed with suction ports that guide the air to the heat exchanger. With indoor units
A plurality of panels attached to the frame and surrounding an outer periphery of the foundation structure in cooperation with the indoor unit;
In a state where the indoor unit and the panel are attached to the frame, a suction passage partitioned from the space to be air-conditioned is defined around the foundation structure, and the suction port of the indoor unit communicates with the suction passage. Air conditioner.   The air conditioner according to claim 1, further comprising a filter attached to the frame so as to face the suction passage, wherein air in the space to be air-conditioned is sucked into the suction passage through the filter.   The air conditioning apparatus according to claim 1, wherein the suction passage is formed along the foundation structure, and an accessory device is housed in a part of the suction passage.   The air conditioning apparatus according to claim 3, wherein the incidental device is covered with the panel.   The air conditioner according to claim 1, wherein piping, wiring, and a drain pipe connected to the indoor unit are arranged in the suction passage. The foundation structure is a pillar serving as a skeleton of the building,
The indoor unit has a flat box-shaped housing that houses the heat exchanger and has the suction port opened, and the housings of the plurality of indoor units extend along the height direction of the pillars. The air conditioner according to claim 1, wherein the air conditioner is attached to the frame in a line.   The frame extends between the vertical bars extending in the height direction of the pillars and spaced apart in the circumferential direction of the pillars, and the adjacent vertical bars. The plurality of outer beams to be attached, and a plurality of horizontal beams that connect the outer beams to the columns, wherein the horizontal beams are combined in a lattice shape so as to surround the columns. Air conditioner.   The frame extends between the pillars extending in the height direction of the pillars and spaced apart in the circumferential direction of the pillars, and spans between the neighboring longitudinal bars. A plurality of horizontal rails connected to the pillar, and a plurality of unit support portions that are attached across the adjacent vertical rails and to which the casing of the indoor unit is fixed. The air conditioning apparatus described.   The plurality of indoor units are adjacent to each other in the circumferential direction of the foundation structure, and a gap is formed between the adjacent indoor units so as to connect to the suction passage, and the gaps are detachably covered by the panel. Item 6. The air conditioner according to item 1 or 5.

Images