JP2021047006A - Air conditioning indoor unit - Google Patents

Abstract

To provide an air conditioning device that can firmly fix an indoor unit to a foundation structure and increase anti-vibration strength of the indoor unit.SOLUTION: An air conditioning device includes a frame 20 and at least one indoor unit 5. The frame 20 is fixed to an outer peripheral part of a foundation structure 80 exposed to a space to condition the internal air thereof. The indoor unit 5 includes: a built-in heat exchanger for exchanging heat between refrigerant and air; and a built-in blower, and is detachably supported to the frame 20.SELECTED DRAWING: Figure 7

Description

An embodiment of the present invention relates to, for example, an indoor unit suitable for spot air conditioning and an air conditioner including the indoor unit.

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

Special Fair 7-62558 Gazette

In factories where various machine tools and cranes are installed, vibrations caused by the operation of machine tools and cranes may be transmitted to the pillars of the building. Furthermore, when an earthquake occurs, the vibration of the ground is transmitted to the pillars, and it is undeniable that the pillars are shaken strongly.

Therefore, when installing the indoor unit on the pillar, it is necessary to take measures so that the indoor unit can withstand vibration.

An object of the present invention is to obtain an air conditioner capable of firmly fixing an indoor unit to a foundation structure and increasing the vibration resistance of the indoor unit.

According to embodiments, the air conditioner comprises a frame and at least one indoor unit. The frame is fixed to the outer peripheral portion of the foundation structure facing the space to be air-conditioned. The indoor unit incorporates a heat exchanger and a blower that exchange heat between the refrigerant and air, and is detachably supported by the frame.

FIG. 1 is a circuit diagram showing a piping system of the air conditioner according to the first embodiment. FIG. 2 is a perspective view of the indoor unit of the first embodiment as viewed from the front direction. FIG. 3 is a perspective view of the indoor unit as viewed from the rear direction. FIG. 4 is a perspective view showing the internal structure of the indoor unit in an exploded manner. FIG. 5 is a front view of the indoor unit. FIG. 6 is a cross-sectional view of the indoor unit showing the flow direction of the air blown out from the indoor unit. FIG. 7 is a side view of the air conditioner according to the first embodiment. FIG. 8 is a perspective view of the air conditioner according to the first embodiment. FIG. 9 is a plan view showing a state in which the first to fourth indoor unit assemblies are installed on the pillars of the building via a frame. FIG. 10 is a perspective view showing a state in which the frame is assembled to the pillar of the building. FIG. 11 is a perspective view showing a state in which the lower structure of the frame is assembled to the pillar of the building. FIG. 12 is an enlarged perspective view showing a connection portion between the lower structure and the upper structure. FIG. 13 is a perspective view of a first indoor unit assembly in which four indoor units are integrally connected by a subframe. FIG. 14 is a perspective view showing the positional relationship between the subframe and the indoor unit. FIG. 15 is a perspective view showing the mutual positional relationship between the frame, the exterior panel, and the filter in an exploded manner. FIG. 16 is a perspective view of an air conditioner showing the relative positional relationship between the filter element and the outer frame. FIG. 17 is a side view of the air conditioner according to the modified example of the first embodiment. FIG. 18 is a side view of the air conditioner according to the second embodiment. FIG. 19 is a perspective view of the air conditioner according to the second embodiment. FIG. 20 is a perspective view of an air conditioner showing the positional relationship between the first to fourth indoor unit assemblies attached to the frame and the pillars in the second embodiment. FIG. 21 is a plan view showing a state in which the first to fourth indoor unit assemblies are installed on the pillars of the building via a frame. FIG. 22 is a perspective view of the first indoor unit assembly showing a state in which four indoor units are attached to the first unit support portion of the frame. FIG. 23 is a perspective view showing the positional relationship between the interior unit, the exterior panel, the first decorative panel, and the second decorative panel. FIG. 24 is a perspective view showing a state in which a fire extinguisher, an air compressor, and a remote controller are arranged around a pillar separated from the indoor unit. FIG. 25 is a front view of the air conditioner according to the third embodiment.

[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 of a large-scale space such as a production factory or a vehicle factory. 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 the factory building 4, for example, and houses various refrigeration cycle devices such as a compressor for compressing a refrigerant, a heat exchanger, and an accumulator. The first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are installed in the work area A to be air-conditioned inside the building 4. The first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d each include four indoor units 5.

As shown in FIG. 1, the liquid side main pipe 7A connected to the outdoor unit 2 is branched into the first to fourth liquid side connection pipes 9a, 9b, 9c, 9d via the branch header 8A. The gas side main pipe 7B connected to the outdoor unit 2 is branched into the first to fourth gas side connection pipes 9e, 9f, 9g, 9h via the 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 the first to fourth indoor unit assemblies 3a, 3b, It is guided by 3c and 3d.

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

The liquid pipes 10 of the first to fourth liquid side connecting pipes 9a, 9b, 9c, 9d have four branch liquid pipes 10a, 10b, 10c, which are branched by three Y-shaped branch joints 12a, 12b, 12c. It has 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 connecting pipes 9e, 9f, 9g, 9h have four branched 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 outdoors. It is designed to be returned to Machine 2.

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

The indoor units 5 of the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d have a common configuration with each other. 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 20 is a square box-shaped element having a depth dimension D, a width dimension W, and a height dimension H, and is formed of, for example, a 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 significantly smaller than the width dimension W and the height dimension H. Therefore, the housing 20 has a flat shape.

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

The front cover 27 has 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 in 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 35a and 35b are folded back at right angles from the side edges 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 of the front panel 34 and the upper ends of the side panels 35a and 35b with a plurality of screws. The top cover 28 covers the gap between the upper end 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 inside 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 containment chamber 39 is located above the first containment chamber 38 and is covered with a top cover 28. In other words, the second storage chamber 39 can be exposed to the outside of the housing 20 by loosening the screws 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 40a and 40b extend in the height direction of the housing 20 and project to the side of the housing 20.

The air heat exchanger 21 is housed in the first storage 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 a refrigerant flows. The cooling fins 43 are elongated square plates extending in the height direction of the housing 20, and are arranged in a row 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 with each other to form a plurality of flow paths (paths). Further, the heat transfer tube 44 is thermally connected to the cooling fin 43.

According to the present embodiment, the air heat exchanger 21 stands up along the back panel 30 inside the first accommodation 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 21a faces the partition plate 29 inside the first storage chamber 38. The lower end surface 21b is covered from below with 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 are generated on the upper end surface 21a of the air heat exchanger 21 due to dew condensation, the water droplets tend to flow away from the back panel 30 as the upper end surface 21a is inclined. Similarly, when the 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 accompanies the inclination of the lower end surface 21b of the air heat exchanger 21. Therefore, it becomes easier to flow in the direction away from the back panel 30.

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

The refrigerant pipe 45 connected to the air heat exchanger 21 is housed in the first storage chamber 38. In the present embodiment, in order to secure a space for accommodating the refrigerant pipe 45 inside the first accommodation chamber 38, the air heat exchanger 21 is located on the side of one side panel 35a between the side panels 35a and 35b of the front cover 27. It is biased to. As a result, a space is created 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 46a and 46b connected to the refrigerant pipe 45. The connection ports 46a and 46b penetrate the back panel 30 and project behind the housing 20, so that the branch liquid pipe 10a and the branch gas pipe 11a are connected to the connection ports 46a and 46b. ..

Further, as shown in FIG. 5, as the air heat exchanger 21 is offset to the side of one side panel 35a, the center C1 of the air heat exchanger 21 becomes the center C2 of the front panel 34 of the front cover 27. It is out of alignment. The center of the through hole 36 opened in the front panel 34 is located on an extension 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 housed inside 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 along the radial direction of the casing 50 at one end of the casing 50. The second flange portion 53 projects outward along the radial direction of the casing 50 at the other end 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 located on the extension line of the center C1 of the air heat exchanger 21. The boss portion 55 of the impeller 51 has a built-in 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 housed in the second storage 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 part 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. As a result, the attachment 60 projects coaxially from the casing 50 of the blower 22 toward the front of the housing 20.

A cylindrical ventilation register 62 is fitted in the attachment 60. The ventilation register 62 is an element for adjusting the amount of air blown from the blower 22 and arbitrarily changing the blowing direction, and is coaxially projected 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 outward along the radial direction of the outer cylinder 65. The flange portion 66 is removably supported by the front panel 34 with a plurality of screws.

The outer cylinder 65 projects horizontally from the front panel 34 toward the front of the housing 20 while surrounding the blower 22, the attachment 60, and the ventilation register 62. As shown in FIG. 6, the axis O1 passing through the center of the outer cylinder 65 intersects the center C1 of the air heat exchanger 21.

The protruding end of the outer cylinder 65 is located 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 projects inward 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 outlet 68 faces the blower 22 via the ventilation register 62.

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

A plurality of air return holes 71 are formed in the front panel 34 of the housing 20 facing one end of the ventilation passage 70. The air return hole 71 is located around the blower 22 and is opened in the first storage chamber 38 of the housing 20. Therefore, one end of the ventilation passage 70 is communicated with the upstream side of the blower 22. Further, in the present embodiment, the inner surface of the outer cylinder 65 facing the ventilation passage 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 3a, 3b, 3c, and 3d having the indoor unit 5 have a frame dedicated to the outer peripheral portion of the existing pillar 80 which is the skeleton of the building 4. It is installed using 81.

The pillar 80 is an example of a foundation structure, and stands vertically from the floor surface F of the building 4. According to the present embodiment, the pillar 80 has flat first to fourth outer peripheral surfaces 80a, 80b, 8
It is a quadrangular prism having 0c 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 80a, 80b, 80c, 80d define the outer peripheral portion of the pillar 80.

The attachment structures of the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d to the pillar 80 are common to each other. Therefore, in the present embodiment, the mounting structure of the first indoor unit assembly 3a will be described as a representative, and the mounting structures of the second to fourth indoor unit assemblies 3b, 3c, and 3d will be designated by the same reference numerals. Therefore, the description thereof will be omitted.

As shown in FIGS. 13 and 14, the four indoor units 5 constituting the first indoor unit assembly 3a are integrally connected along the height direction of the pillar 80 by using a ladder-shaped subframe 82. Has been done. The subframe 82 includes a pair of frame elements 83a, 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, for example, an L-shaped cross section, and has a pair of flat plate portions 85a, 85b that are orthogonal to each other. The frame elements 83a and 83b extend straight in the height direction of the pillar 80.

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

Therefore, the frame elements 83a and 83b are arranged in parallel with a gap from each other, and one of the flat plate portions 85a of the frame elements 83a and 83b is located on the same surface. Further, the distance between the frame elements 83a and 83b is set to be equivalent to the width dimension W of the indoor unit 5.

As shown in FIGS. 13 and 14, brackets 40a and 40b projecting from both sides 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. .. As a result, the four indoor units 5 are detachably supported by the subframe 82 in a state in which they are arranged in a row in the vertical direction. In this embodiment, the beam 84 of the subframe 82 is located behind the boundary of 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 rails 92a, 92b, 92c, 92d and a pair of connecting tools 93.

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

As shown in FIGS. 11 and 12, the connecting tool 93 is an element that connects the pillar 80 and the vertical rails 92a, 92b, 92c, 92d, and has an interval in the height direction of the pillar 80. Have been placed. Each connector 93 includes a pair of first cross rails 95a, 95b, a pair of second cross rails 96a, 96b, and first to fourth outer beams 97a, 97b, 97c, 97d. There is.

The first cross rails 95a and 95b 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 pillar 80. The intermediate portion of the first cross rail 95a is in contact with the first outer peripheral surface 80a of the pillar 80. The middle portion of the other first cross rail 95b is in contact with the third outer peripheral surface 80c of the pillar 80. Both ends of the first cross rails 95a and 95b project around the pillar 80 in a state parallel to each other.

The second cross rails 96a and 96b are made of angle steel having an L-shaped cross section, for example, and are horizontal with a distance from each other so as to sandwich the pillar 80 from a direction orthogonal to the first cross rails 95a and 95b. Is located in. The intermediate portion of the second cross rail 96a is in contact with the second outer peripheral surface 80b of the pillar 80. The middle portion of the other second cross rail 96b is in contact with the fourth outer peripheral surface 80d of the pillar 80. Both ends of the second cross rails 96a and 96b project around the pillar 80 in a state parallel to each other.

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

As a result, the first cross rails 95a and 95b and the second cross rails 96a and 96b are combined in a grid pattern so as to surround the pillar 80. In other words, the first cross rails 95a and 95b and the second cross rails 96a and 96b sandwich the pillar 80 from two directions orthogonal to each other.

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

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

The third outer beam 97c is horizontally bridged between the flat plate portion 94a of the vertical rail 92c and the flat plate portion 94a of the vertical rail 92d. The intermediate portion of the third outer beam 97c is connected to the other ends of the second cross rails 96a and 96b with fasteners such as a plurality of screws or bolts.

The fourth outer beam 97d is horizontally bridged between the flat plate portion 94b of the vertical rail 92d and the flat plate portion 94b of the vertical rail 92a. The intermediate portion of the fourth outer beam 97d is connected to the other ends of the first cross rails 95a and 95b with fasteners such as a plurality of screws or bolts.

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

As a result, the four vertical rails 92a, 92b, 92c, and 92d are held in a posture of standing vertically from the floor surface F of the building 4 at positions diagonally separated from the corners of the pillars 80. The distance between the adjacent vertical rails 92a, 92b, 92c, 92d is set to be the same as the distance between the frame elements 83a, 83b of the subframe 82.

As shown in FIGS. 10 and 12, the superstructure 91 of the frame 81 basically has the same configuration as the lower structure 90. That is, the superstructure 91 includes four vertical rails 100a, 100b, 100c, 100d, and a pair of connecting tools 101. Each of the vertical rails 100a, 100b, 100c, 100d is made of angle steel having, for example, an L-shaped cross section, and has flat plate portions 102a, 102b that are orthogonal to each other. The vertical rails 100a, 100b, 100c, and 100d stand up along the pillar 80 at positions corresponding to the four corners of the pillar 80.

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

The first cross 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 pillar 80. The intermediate portion of the first cross rail 104a is in contact with the first outer peripheral surface 80a of the pillar 80. The intermediate portion of the first cross rail 104b is in contact with the third outer peripheral surface 80c of the pillar 80. Both ends of the first cross rails 104a and 104b project around the pillar 80 in a state parallel to each other.

The second cross rails 105a and 105b are made of angle steel having an L-shaped cross section, for example, and are horizontal with a distance from each other so as to sandwich the pillar 80 from a direction orthogonal to the first cross rails 104a and 104b. Is located in. The intermediate portion of the second cross rail 105a is in contact with the second outer peripheral surface 80b of the pillar 80. The intermediate portion of the second cross rail 105b is in contact with the fourth outer peripheral surface 80d of the pillar 80. Both ends of the second cross rails 105a and 105b project around the pillar 80 in a state parallel to each other.

Further, the intermediate portion of the first cross rails 104a and 104b and the intermediate portion of the second cross rails 105a and 105b intersect each other around the pillar 80. The intersections of the first cross rails 104a and 104b and the second cross rails 105a and 105b are each joined by fasteners such as a plurality of screws or bolts.

As a result, the first cross rails 104a and 104b and the second cross rails 105a and 105b are combined in a grid pattern so as to surround the pillar 80. In other words, the first cross rails 104a and 104b and the second cross rails 105a and 105b sandwich the pillar 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 bridged between the flat plate portion 102a of the vertical rail 100a and the flat plate portion 102a of the vertical rail 100b. The intermediate portion of the first outer beam 106a is connected to one end of the second cross rails 105a and 105b with fasteners such as a plurality of screws or bolts.

The second outer beam 106b is horizontally bridged between the flat plate portion 102b of the vertical rail 100b and the flat plate portion 102b of the vertical rail 100c. The intermediate portion of the second outer beam 106b is connected to one end of the first cross rails 104a, 104b with fasteners such as a plurality of screws or bolts.

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

The fourth outer beam 106d is horizontally bridged between the flat plate portion 102b of the vertical rail 100d and the flat plate portion 102b of the vertical rail 100a. The intermediate portion of the fourth outer beam 106d is connected to the other ends of the first cross rails 104a and 104b with fasteners such as a plurality of screws or bolts.

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

Therefore, the four vertical rails 100a, 100b, 100c, and 100d are held in a vertically standing posture at positions diagonally separated from the corners of the pillar 80. The intervals between the adjacent vertical bars 100a, 100b, 100c, and 100d are set to be equivalent to the intervals between the frame elements 83a and 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 superstructure 91 are overlapped with the upper ends of the vertical bars 92a, 92b, 92c, 92d of the lower structure 90. Together with, they are joined by fasteners such as multiple screws or bolts.
As a result, 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 3a, 3b, 3c, and 3d having four indoor units 5 arranged in a vertical row are the superstructure 91 of the frame 81. It is selectively and removablely supported.

According to the present embodiment, the height of the substructure 90 standing up from the floor surface F of the building 4 is, for example, 2 m, which is higher than the average height of the worker M who is active in the work area A. Therefore, the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are located directly 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 portions 102a of the vertical rails 100a and 100b with fasteners such as a plurality of screws or bolts. Has been done. In a state where the first indoor unit assembly 3a is fixed to the upper structure 91, four indoor units 5 are lined up in a row along the pillar 80, and the housing 20 of each indoor unit 5 is the first of the pillar 80. It faces the outer peripheral surface 80a of 1.

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

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

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 portions 102b of the vertical rails 100d and 100a with fasteners such as a plurality of screws or bolts. Has been done. In a state where the fourth indoor unit assembly 3d is fixed to the upper structure 91, four indoor units 5 are lined up in a row along the pillar 80, and the housing 20 of each indoor unit 5 is the first of the pillar 80. It faces the outer peripheral surface 80d of No. 4.

As shown in FIGS. 7 to 9, when the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are fixed to the superstructure 91, the duct portion 24 of the indoor unit 5 is centered on the pillar 80. It is projected horizontally in the four directions.

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

As shown in FIGS. 7, 8, 15 and 16, the lower structure 90 of the frame 81 detached from the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d has a plurality of exterior panels 110. And a plurality of filters 111 are selectively and detachably supported. The exterior panel 110 and the filter 111 are square plate-shaped elements of the same size and are compatible with each other.

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

In the present embodiment, the exterior panel 110 covers the lower structure 90, the second outer peripheral surface 80b of the pillar 80, the third outer peripheral surface 80c, and the fourth outer peripheral surface 80d. The filters 111 are arranged below the first indoor unit assembly 3a in the height direction of the pillar 80, and cover the first outer peripheral surface 80a of the pillar 80.

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

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

According to the present embodiment, the upper end of the suction passage 117 is closed by a plurality of closing plates 118 shown in FIG. The block plate 118 is attached to the upper end of the superstructure 91. Therefore, the suction passage 117 is partitioned from the work area A inside the building 4 and is connected to 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, 9h also functions as a piping space. The connecting pipes 9a to 9h pass through the closing plate 118 and are guided to the upper part of the pillar 80. At the same time, the drain pipes 119 connected to the drain ports 33 of all the indoor units 5 are led to the upper part of the pillar 80 through the suction passage 117.

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

In such a first embodiment, when the indoor unit 5 of the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d starts to operate, the blower 22 of the indoor unit 5 passes through the through hole 36 to form the housing 20. The air in the first containment chamber 38 of the above is sucked in. As a result, a negative pressure acts on the suction port 32 of the housing 20. Since the suction port 32 is opened in the suction passage 117 around the pillar 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 converts the air toward the blower 22 into cold or warm air by exchanging heat between the air toward the blower 22 and the refrigerant flowing through the heat transfer tube 44. After passing through the ventilation register 62, the heat-exchanged air is blown out horizontally from the outlet 68 of the duct portion 24 toward the area above the work area A in which the worker M is active.

Therefore, the heat-exchanged air can be sent out to the four sides of the pillar 80, and local air conditioning of the work area A located around the pillar 80 or stratified air conditioning using the pillar 80 becomes possible.

According to the present embodiment, the four indoor units 5 constituting the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are supported by the frame 81 in a state of surrounding the outer peripheral portion of the pillar 80. .. Since the frame 81 is integrated by combining a plurality of shaped steels, it has sufficient mechanical strength. Therefore, the housing 20 of all the indoor units 5 can be firmly fixed to the outer peripheral portion of the pillar 80 by using the frame 81.

As a result, for example, even when the vibration of various machine tools installed on the floor surface F of the building 4 or the vibration due to the earthquake is transmitted to the pillar 80, the vibration acting on the indoor unit 5 can be suppressed to a small extent, and the room Sufficient seismic strength of the unit 5 can be secured.

Further, for each of the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d, four indoor units 5 are assembled as an integral structure using the subframe 82. Therefore, the workability when assembling the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d to the frame 81 is improved, and the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d are existing. It can be easily installed on the outer peripheral portion of the pillar 80.

At the same time, the subframe 82 functions as a kind of strength member, which also effectively contributes to increasing the seismic strength of the indoor unit 5.

In addition, the upper structure 91 of the frame 81 that supports the indoor unit 5 is formed by sandwiching the pillar 80 from two directions orthogonal to each other by using the first cross rails 104a and 104b and the second cross rails 105a and 105b. It is assembled to 80. Similarly, the lower structure 90 of the frame 81 that supports the exterior panel 110 and the filter 111 is formed by sandwiching the pillar 80 between the first cross rails 95a and 95b and the second cross rails 96a and 96b from two directions orthogonal to each other. It is assembled to the pillar 80.

Therefore, it is not necessary to make a hole for fixing in the existing pillar 80 of the building 4 or to lay an anchor bolt or the like for installation, and no special construction work for the existing structure is required. As a result, the frame 81 can be easily assembled to the outer peripheral portion of the existing pillar 80, and the construction period can be shortened accordingly, and the cost required for the construction of the air conditioner 1 can be reduced.

According to the first embodiment, the box-shaped housing 20 that is the outer shell of the indoor unit 5 only houses the flat air heat exchanger 21 and some electrical components 58, and the blower 22 is a housing. It is supported on the front surface of the body 20 and covered with a dedicated duct portion 24.

Therefore, the housing 20 can be made as thin and compact as possible, and the presence of the housing 20 can be suppressed as little as possible. Therefore, the indoor unit 5 can be comfortably installed on the outer peripheral portion of the existing pillar 80, and even though the indoor unit 5 exists around the pillar 80, a sense of discomfort does not occur.

Further, since the duct portion 24 having the outlet 68 protrudes from the front surface of the housing 20, it is possible to provide the indoor unit 5 having an original appearance in which the direction in which the air-conditioned air is blown can be seen at a glance. Therefore, it is also convenient for enhancing the design of the air conditioner 1.

In addition, by removing the duct portion 24 from the housing 20, the blower 22 and the ventilation register 62 can be exposed to the outside of the housing 20. Therefore, the maintenance work of the blower 22 and the ventilation register 62 can be performed without removing the housing 20 from the frame 81 or disassembling the housing 20, and the workability is improved.

According to the present embodiment, the duct portion 24 of the indoor unit 5 has an outer cylinder 65 that surrounds the blower 22, the attachment 60, and the ventilation register 62. The outer cylinder 65 defines a ventilation passage 70 partitioned from the outside air between the blower 22, the attachment 60, and the ventilation register 62.

According to this configuration, a part of the air passing through the ventilation register 62 and heading toward the outlet 68 is guided to the ventilation passage 70 by the guide wall 67 defining the outlet 68, as shown by the broken line arrow in FIG. Will be done. Since the ventilation passage 70 is connected to 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 passage 70 is introduced from the air return hole 71 to the first storage chamber 38. Is sucked into the blower 22 via.

As a result, a part of the air that has passed through the ventilation register 62 returns to the direction of the housing 20 through the ventilation passage 70. In other words, the outer peripheral surface of the ventilation register 62 is directly exposed to the flow of air 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, under the conditions of high temperature and high humidity, even if the cold air accompanying the cooling operation passes through the ventilation register 62, dew condensation is less likely to occur on the outer peripheral surface of the ventilation register 62. In addition, since the inner surface of the outer cylinder 65 facing the ventilation passage 70 and the inner surface of the guide wall 67 are covered with the heat insulating material 72, it is possible to prevent dew condensation from occurring on the outer peripheral surface of the outer cylinder 65.

Therefore, it is possible to prevent so-called water droplets from being blown out from the outlet 68 during the cooling operation, and to avoid the phenomenon that water droplets are dropped from the outer cylinder 65.

According to the indoor unit 5 of the present embodiment, as shown in FIG. 5, the center C1 of the air heat exchanger 21 inside the housing 20 is deviated from the center C2 of the front panel 34 of the housing 20. The impeller 51 of the blower 22 and the outer cylinder 65 of the duct portion 24 are coaxially positioned on an extension line of the center C1 of the air heat exchanger 21. Therefore, the mainstream of air passing through the air heat exchanger 21 and heading for the blower 22 passes through the central portion of the air heat exchanger 21.

Therefore, the positional relationship between the air heat exchanger 21 and the blower 22 is optimized, and heat exchange between the refrigerant flowing through the heat transfer tube 44 of the air heat exchanger 21 and the air can be efficiently performed.

[Modified example of the first embodiment]
FIG. 17 discloses a modified example of the first embodiment.

The modified example differs from the first embodiment in that the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are attached to the lower structure 90 of the frame 81. Other configurations are the same as 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 first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are installed on the outer peripheral portion of the pillar 80 via the frame 81 as in the first embodiment. The four indoor units 5 included in the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are arranged in a row in the vertical direction from the floor surface F of the building 4.

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

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

According to such a modification of the first embodiment, since the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are installed in the lower structure 90 of the frame 81, the indoor unit 5 is used for air conditioning. The generated air can be blown out from a low position of the work area A in parallel with the floor surface F. As a result, stratified air conditioning that pushes up the high-temperature air near the floor surface F toward the upper side of the building 4 becomes possible, and the temperature difference in the entire work area A can be suppressed to a small extent.

In the first embodiment, the first to fourth indoor unit assemblies 3a, 3b, 3c, and 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 pillar 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 pillar 80, and the pillar The fourth outer peripheral surface 80d of the 80 may be covered with at least one of the exterior panel 110 and the filter 111. That is, the air may be blown out in three directions around the pillar 80, and the air blowing direction is not particularly limited.

Further, the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d are attached to the intermediate portion 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. You may. In this case, the exterior panel 110 and the filter 111 can be arranged at at least one of the upper and lower sides of the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d.

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

In the first embodiment, the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d each include four indoor units 5, but the number of indoor units 5 is one, two, and so on. 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 subframe 82 that integrally connects the plurality of indoor units 5 is not an indispensable 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 differs from the first embodiment in the configuration of the frame 200 that mainly supports the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d on the pillar 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 designated by the same reference numerals, and the description thereof will be omitted.

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

The first vertical crosspieces 201a, 201b, 201c, 201d are made of angle steel having, for example, an L-shaped cross section, and have flat plate portions 205a, 205b that are orthogonal to each other. The first vertical rails 201a, 201b, 201c, and 201d stand up along the pillar 80 with the intersections of the flat plate portions 205a and 205b abutting against the four corners of the pillar 80, respectively.

The first to fourth cross rails 202a, 202b, 202c, 202d are made of, for example, channel steel. As shown in FIG. 21, the first cross 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 is a pillar. They are arranged at intervals in the height direction of 80. The first cross rail 202a is in contact with the first outer peripheral surface 80a of the pillar 80.

The second horizontal rail 202b is horizontally bridged 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 apart in the height direction of the pillar 80. Are arranged in existence. The second cross rail 202b is in contact with the second outer peripheral surface 80b of the pillar 80.

The third horizontal rail 202c is horizontally bridged 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 apart in the height direction of the pillar 80. Are arranged in existence. The third cross rail 202c is in contact with the third outer peripheral surface 80c of the pillar 80.

The fourth horizontal rail 202d is horizontally bridged 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 apart in the height direction of the pillar 80. Are arranged in existence. The fourth cross rail 202d is in contact with the fourth outer peripheral surface 80d of the pillar 80.

As a result, the first to fourth cross rails 202a, 202b, 202c, and 202d are combined in a frame shape at a plurality of locations along the height direction of the pillar 80 so as to surround the outer peripheral portion of the pillar 80. In other words, the first to fourth cross rails 202a, 202b, 202c, and 202d cooperate with each other to sandwich the pillar 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 with each other. There is. 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, 203d will be described as the first. The same reference numerals as those of the unit support portion 203a of No.

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 section, for example. The cross beam 208 is made of, for example, channel steel. The cross beams 208 are horizontally bridged 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 cross beam 208 are arranged in parallel with a distance from each other. The distance between the outer rails 207a and 207b is set to be the same as 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 bridged between both ends of the first cross rail 202a and both ends of the cross 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 80a of the pillar 80.

Due to the presence of the support stay 209, the first unit support portion 203a is connected to the pillar 80 via the first vertical rail 201a, the second vertical rail 201b, and the first horizontal rail 202a. As a result, the outer rails 207a and 207b of the first unit support portion 203a face the first vertical rails 201a and the second vertical rails 201b at positions away from the first outer peripheral surface 80a of the pillar 80. It stands up along the height direction of 80.

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

The vertical rails 207a and 207b of the third unit support portion 203c of the pillar 80 face the third vertical rail 201c and the fourth vertical rail 201d at a position away from the third outer peripheral surface 80c of the pillar 80. It stands up along the height direction.

Further, the vertical rails 207a and 207b of the fourth unit support portion 203d face the fourth vertical rails 201d and the first vertical rails 201a at positions separated from the fourth outer peripheral surface 80d of the pillar 80. It stands up along the height direction of 80.

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

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 fasteners such as a plurality of screws or bolts. There is. In a state where the first indoor unit assembly 3a is fixed to the first unit support portion 203a, four indoor units 5 are lined up in a row along the height direction of the pillar 80, and the housings of the respective indoor units 5 are arranged in a row. The body 20 faces the first outer peripheral surface 80a of the pillar 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 fasteners such as a plurality of screws or bolts. There is. In a state where the second indoor unit assembly 3b is fixed to the second unit support portion 203b, four indoor units 5 are lined up in a row along the height direction of the pillar 80, and the housings of the respective indoor units 5 are arranged in a row. The body 20 faces the second outer peripheral surface 80b of the pillar 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 fasteners such as a plurality of screws or bolts. There is. In a state where the third indoor unit assembly 3c is fixed to the third unit support portion 203c, four indoor units 5 are lined up in a row along the height direction of the pillar 80, and the housings of the respective indoor units 5 are arranged in a row. The body 20 faces the third outer peripheral surface 80c of the pillar 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 fasteners such as a plurality of screws or bolts. There is. When the fourth indoor unit assembly 3d is fixed to the fourth unit support portion 203d, the four indoor units 5 are lined up in a row along the height direction of the pillar 80, and the housings of the respective indoor units 5 are arranged in a row. The body 20 faces the fourth outer peripheral surface 80d of the pillar 80.

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

The gap G is covered by 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 adjacent first to fourth unit support portions 203a, 203b, 203c, 203d with fasteners such as a plurality of screws or bolts. Therefore, the first decorative panel 212 can be freely removed by loosening the fastener.

As shown in FIGS. 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, and 3d. There is. Therefore, an upper space S1 is formed between the outer peripheral portion of the pillar 80 and the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d.

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

The exterior panel 110 is attached to the outer rails 207a, 207b of the adjacent first to fourth unit support portions 203a, 203b, 203c, 203d with fasteners such as a plurality of screws or bolts. The filter, like the filter 111 of the first embodiment, includes a square outer frame that detachably supports the filter elements. The outer frame is attached to the outer rails 207a, 207b of the adjacent first to fourth unit support portions 203a, 203b, 203c, 203d with fasteners such as a plurality of 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. .. The second decorative panel 213 has an elongated shape extending in the height direction of the pillar 80 like the first decorative panel 212. The second decorative panel 213 is fixed to the outer rails 207a, 207b of the adjacent first to fourth unit support portions 203a, 203b, 203c, 203d with fasteners such as a plurality of screws or bolts. Therefore, the exterior panel 110, the filter and the second decorative panel 213 cooperate with each other to surround the frame 200 and the pillar 80.

When the exterior panel 110, the filter, and the second decorative panel 213 are attached to the outer rails 207a, 207b of the first to fourth unit support portions 203a, 203b, 203c, 203d, the outer peripheral portion of the pillar 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 block plate 216 is attached to the upper end of the frame 200. Therefore, the suction passage 215 is partitioned from the work area A inside the building 4 and is connected to the work area A through a filter. All the indoor units 5 attached to the frame 200 are adapted to 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, 9h also functions as a piping space. The connecting pipes 9a to 9h pass through the closing plate 216 and are guided to the upper part of the pillar 80.

At the same time, the drain pipes 119 connected to the drain ports 33 of all the indoor units 5 are led to the upper part of the pillar 80 through the suction passage 215. Further, the wiring 121 electrically connected to all the indoor units 5 is led to the upper part of the pillar 80 through the suction passage 215.

As shown in FIG. 24, around the pillar 80 off the first to fourth indoor unit assemblies 3a, 3b, 3c, 3d, ancillary equipment such as a fire extinguisher 220 and an air compressor 221 and the first to fourth indoor units. A remote controller 222 that operates the fourth indoor unit assembly 3a, 3b, 3c, and 3d is arranged.

The fire extinguisher 220 is housed in the lower space S2, for example, below the third indoor unit assembly 3c. At the position corresponding to the fire extinguisher 220, the exterior panel 110 is removed from the frame 200. Therefore, the fire extinguisher 220 is exposed to the work area A without being covered with the exterior panel 110.

The air compressor 221 and the remote controller 222 are housed in the lower space S2, for example, below the first indoor unit assembly 3a. The air compressor 221 and the remote controller 222 are arranged in the height direction of the pillar 80 and are covered with an exterior panel 110 attached to the frame 200.

This makes it possible to prevent the air compressor 221 and the remote controller 222 from being stolen. At the same time, it is possible to prevent a third party from operating the remote controller 222 without permission without the permission of the administrator of the air conditioner 1 or the worker who maintains 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 area of the lower space S2 where the air compressor 221 and the remote controller 222 face is a suction passage 215 with a plurality of inner covers 223 as shown in FIG. It is good to partition from. As a result, it is possible to prevent the air in the work area A from being sucked into the suction passage 215 without passing through the filter, and it is possible to prevent dust from adhering to the air heat exchanger 21 of the indoor unit 5.

According to the second embodiment, the frame 200 that supports the first to fourth indoor unit assemblies 3a, 3b, 3c, and 3d on the outer peripheral portion of the column 80 is integrated by combining a plurality of shaped steels. Therefore, it has sufficient mechanical strength. Therefore, the housings 20 of all the indoor units 5 can be firmly fixed to the outer peripheral portion of the pillar 80 by using the frame 200, and the same effect as that of the first embodiment can be obtained.

[Third Embodiment]
FIG. 25 discloses a third embodiment.

In the third embodiment, the arrangement direction of the indoor units 5 is different from that in the first embodiment. Other configurations are basically the same as those in the first embodiment. As shown in FIG. 25, in the third embodiment, two square columns 130a and 130b are erected from the floor surface F of the building 4. The pillars 130a and 130b are arranged at intervals in the work area A, for example.

Frames 131a and 131b are assembled on the outer peripheral portions of the pillars 130a and 130b, respectively. Each of the frames 131a and 131b has the same configuration as the lower structure 90 of the frame 81 according to the first embodiment. Therefore, the respective parts of the frames 131a and 131b are designated by the same reference numerals as those of the lower structure 90 of the first embodiment, and the description thereof will be omitted.

According to the third embodiment, one frame 131a stands vertically from the floor surface F of the building 4 at a position diagonally separated from the corner portion of one pillar 130a. Similarly, the other frame 131b is vertically erected from the floor surface F of the building 4 at a position diagonally separated from the corner portion of the other pillar 130a.

One indoor unit assembly 132 is horizontally straddled between the upper ends of the frames 131a and 131b. The indoor unit assembly 132 includes, for example, four indoor units 5, and the indoor units 5 are integrally connected by using a ladder-shaped subframe 133.

The subframe 133 includes a pair of frame elements 134a and 134b and a plurality of vertical beams 135. Each frame element 134a, 134b is made of, for example, shaped steel and extends straight along the horizontal direction orthogonal to the columns 130a, 130b.

The vertical beam 135 is made of, for example, shaped steel. The vertical beams 135 are vertically bridged between the frame elements 134a and 134b and are arranged at intervals in the longitudinal direction of the frame elements 134a and 134b.

The four indoor units 5 are fixed to the subframe 133 so as to straddle between the frame elements 134a and 134b, respectively. One end of the frame elements 134a, 134b is fixed to the upper end of one frame 131a with fasteners such as a plurality of screws or bolts. Similarly, the other end of the frame elements 134a, 134b is fixed to the upper end of the other frame 131b with fasteners such as a plurality of screws or bolts.

Therefore, the four indoor units 5 are arranged in a horizontal row so as to cross the work area A at a position higher than the height of the worker M. Therefore, in the third embodiment, the air conditioned by the indoor unit 5 is blown out horizontally from the outlet 68 toward the area above the work area A.

In the third embodiment, the subframe 133 of the indoor unit 5 is fixed so as to straddle between the upper ends of the frames 131a and 131b, but the present invention is not limited to this. For example, in a building where beams are fixed across adjacent columns, a frame is installed so as to surround the outer periphery of the beams, and the subframe of the indoor unit assembly is fixed to the frame, or the indoor units are individually installed. It may be fixed to.

Therefore, the foundation structure is not limited to the columns of the building, and may be, for example, a beam or a brace straddling between adjacent columns. Further, the foundation structure is not specified as columns or beams that form the skeleton of the building, but may be dedicated columns that are erected from the floor of the building to support the indoor unit assembly.

At the same time, the pillar is not limited to a square pillar, and may be composed of, for example, H-shaped steel or I-shaped steel, or may be a combination of a plurality of shaped steels.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Air conditioner, 5 ... Indoor unit, 20 ... Housing, 21 ... Air heat exchanger, 22 ... Blower, 24 ... Duct, 68 ... Outlet, 80, 130a, 130b ... Basic structure (pillar), 81,200 ... Frame.

The air-conditioning indoor unit of the embodiment has a housing having a front panel formed with a through hole and a back panel formed with a suction port; a gap between the upper end portion of the front cover and the upper portion of the back panel. A top cover to cover; a partition plate interposed between the upper portion of the back panel and the upper end portion of the front panel; a first storage chamber provided by partitioning the inside of the housing by the partition plate. And; a second containment chamber located above the first containment chamber and covered with the top cover; and supported by the front panel in a state of projecting forward from the front panel of the housing, the protrusion thereof. With a duct portion that has an outlet at the tip of the air conditioner and communicates with the inside of the housing through the through hole; heat exchange between the air and the refrigerant that are accommodated in the first accommodation chamber and flow into the suction port. A heat exchanger that is housed in the second storage chamber, supported by the back panel, and an electrical component that constitutes a control unit; the front panel of the housing while being covered with the duct portion. A blower that is supported by the above and is arranged on the front side of the front panel of the housing, sucks air that has passed through the heat exchanger through the through hole, and blows air toward the outlet.

Claims (17)

With the housing
A duct portion supported on the front surface of the housing and having an outlet at a tip protruding forward of the housing,
A heat exchanger housed inside the housing and exchanging heat between the refrigerant and air.
An air-conditioning indoor unit including a blower that is supported on the front surface of the housing, is covered with the duct portion, and blows air that has passed through the heat exchanger toward the outlet. The heat exchanger is arranged in a vertical position at a position offset from the center of the front surface of the housing to one side of the housing, and the axis passing through the center of the duct portion is the center of the heat exchanger. The indoor unit for air conditioning according to claim 1, which is located in. The housing has a back panel that stands up along the heat exchanger, a drain pan that is supported by the lower end of the back panel and covers the heat exchanger from below, and a blower that faces the back panel and faces the back panel. With a supported front panel,
The air-conditioning indoor unit according to claim 1 or 2, wherein the upper ends and the lower ends of the heat exchanger are inclined downward as they advance from the back panel toward the front panel. A tubular attachment protruding from the blower toward the front of the housing and a tubular ventilation register coaxially supported by the attachment and protruding from the attachment toward the front of the housing. Further prepare
The duct portion continuously covers the blower, the attachment, and the ventilation register, and has an outer cylinder that defines a ventilation path leading to the front surface of the housing between the blower, the attachment, and the ventilation register. A guide wall that projects inward from the tip of the outer cylinder along the radial direction of the outer cylinder and guides a part of the air that has passed through the ventilation register to the ventilation passage.
The indoor unit for air conditioning according to claim 1, wherein an air return hole communicating with the inside of the housing is opened on the upstream side of the blower on the front surface of the housing facing the ventilation passage. The indoor unit for air conditioning according to claim 4, wherein the inner surface of the outer cylinder facing the ventilation passage and the inner surface of the guide wall are covered with a heat insulating material. The indoor unit for air conditioning according to claim 1, wherein the housing is fixed to the outer peripheral portion of the basic structure via a frame. A frame fixed to the outer circumference of the foundation structure,
An air conditioner including at least one indoor unit that is detachably supported by the frame and incorporates a heat exchanger and a blower that exchange heat between the refrigerant and air. The foundation structure is a pillar that serves as the skeleton of the building.
The frame extends in the height direction of the pillars and is arranged around the pillars at intervals from each other, and a plurality of outer beams bridged between the vertical rails adjacent to each other. The air conditioner according to claim 7, further comprising a plurality of cross rails connecting the outer beam to the pillar, and the cross rails being combined in a grid pattern so as to surround the pillar. The eighth aspect of the present invention, wherein the pillar has a plurality of outer peripheral surfaces facing different directions, and a plurality of the indoor units are arranged in a row along the height direction of the pillar on at least one outer peripheral surface. Air conditioner. A subframe for integrally connecting the plurality of indoor units is further provided, and the plurality of indoor units and the subframe cooperate with each other to form one indoor unit assembly, and the subframe is attached to the frame. The air conditioner according to claim 9, which is detachably supported. The air conditioner according to claim 8, wherein the mounting position of the indoor unit with respect to the frame can be adjusted along the height direction of the pillar. The air conditioner according to claim 7, wherein a plurality of indoor units are arranged in a horizontal row in a space to be air-conditioned. A space for ventilation is provided between the indoor unit and the outer peripheral portion of the pillar, and when the blower is operated, air sucked into the blower from the space passes through the heat exchanger and the frame. Any of claims 8 to 11, wherein a plurality of exterior panels that cover the pillars at a portion separated from the indoor unit and at least one filter that leads to the space are selectively and detachably supported. The air conditioner according to paragraph 1. The air conditioner according to claim 13, wherein the exterior panel and the filter have the same size as each other and are selectively and detachably supported by the frame according to the position of the indoor unit with respect to the pillar. 13. Or claim 14, wherein the filter includes an outer frame that is detachably supported by the frame and a filter element that is detachably supported by the outer frame and filters air sucked into the space. The air conditioner described in. The air conditioner according to claim 7, further comprising an outdoor unit that circulates a refrigerant with the indoor unit. The indoor unit includes a housing that is detachably supported by the frame, and a duct portion that protrudes from the front surface of the housing and has an outlet at the tip.
The air conditioner according to claim 7 or 16, wherein the heat exchanger is housed in the housing and the blower is housed in the duct portion.

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