JP2018146148A - Panel fixing structure for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a panel fixing structure for an air conditioner that has excellent heat insulation properties in a connection part between a panel and a frame.SOLUTION: In a panel fixing structure for an air conditioner for fixing a panel 2 constituting an outside wall of a casing 1 at a frame 6 constituting the casing 1 of an air conditioner, a screw hole is formed at the panel 2 constituting the outside wall, a heat-insulation collar is inserted into the screw hole and the panel 2 is fixed to the frame 6 with a panel fixing screw via the collar.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a panel fixing structure for an air conditioner.

  Conventional air conditioners include those described in Patent Document 1, for example. This is an air conditioner that joins panels closely together. The heat insulation panel has an outer wall plate disposed on the outer surface and an inner wall plate disposed on the inner surface, and a fold portion is formed by bending the peripheral edge portions of the outer wall plate and the inner wall plate. Then, a connecting member that receives the tightening force of the connector is disposed between the outer wall plate and the inner wall plate, and the connecting member receives the tightening force of the connector and directs the folded portion toward the inner wall plate of the other heat insulating panel. Press.

  Patent Document 2 discloses a structure in which an exterior panel is attached to an exterior box that is an angle member structure. This exterior panel has a mounting portion bent in a U shape toward the inside of the periphery, a hole through which a screw for fixing the mounting portion is passed, and a button-like member fitted in the hole.

Patent Document 3 discloses a structure for joining panels together. A breaker for connection is built in both panels, and both breakers are connected with screws. For this reason, the panel is formed with an inclined passage from the inner wall surface to the breaker, and a dedicated tool is inserted into the passage and the two panels are joined by turning a screw.
JP 2010-164217 A 6-84214 JP-A-7-151453

  As described in Patent Document 1, when a casing is formed by joining panels without using a structural material, it is a problem to ensure the strength as the casing. In order to solve this problem, as in Patent Document 2, when the panel is fixed to a structure separate from the panel, it is necessary to secure heat insulation in the fixing portion. In Patent Document 2, the screw is exposed inside the exterior box, and the mounting portion exposed to the outside is in contact with the screw. Therefore, heat conduction occurs inside and outside of the panel through the structure of the angle member, the screw, and the mounting portion.

  Further, as in Patent Document 3, when the panels are connected with screws arranged inside the panel, there arises a problem that the structure becomes complicated.

  This invention solves an above-described subject, and it aims at providing the panel fixing structure of the air conditioner excellent in the heat insulation in the junction part of a panel and a flame | frame.

  In order to solve the above-described problems, the panel fixing structure for an air conditioner of the present invention fixes a panel forming the outer wall of the casing to a frame constituting the casing of the air conditioner, and includes a screw on the panel forming the outer wall. A hole is formed, a heat insulating collar is inserted into the screw hole, and the panel is fixed to the frame with a panel fixing screw through the collar.

  In the panel fixing structure of the air conditioner of the present invention, the collar has a hollow portion outside the axial direction of the panel fixing screw, a solid portion inside the axial direction of the panel fixing screw, and a panel in the solid portion. A panel having a through-hole in the axial direction of the fixing screw, an end surface of the solid portion forming a step between the hollow portion and the through-hole, and a hollow portion having a flange portion that contacts the opening edge of the screw hole, The fixing screw is inserted into the through hole through the hollow part of the collar, the tip stays inside the frame, abuts the collar step at the head and presses the collar against the frame, and attracts the frame to the collar relatively The panel is fixed between the collar flange portion and the frame.

  The panel fixing structure for an air conditioner according to the present invention is characterized in that in the hollow portion of the collar, a gap is provided between the cap attached to the opening of the hollow portion and the head of the panel fixing screw.

  The panel fixing structure for an air conditioner according to the present invention is characterized in that a heat insulating material is inserted into a gap between the cap attached to the opening of the hollow portion and the head of the panel fixing screw in the hollow portion of the collar.

  As described above, according to the present invention, the panel fixing screw is not exposed to the inside of the casing, and the panel fixing screw fastens the panel to the frame through the collar. Therefore, heat conduction between the inside and outside of the casing is performed through the panel fixing screw. Does not occur.

The front view which shows the air conditioner in embodiment of this invention Side view showing the air conditioner Plan view showing the air conditioner Exploded perspective view showing the air conditioner Exploded perspective view showing the air conditioner Front view showing the drain pan of the air conditioner Side view showing the drain pan of the air conditioner The perspective view which shows the main member and corner connection member of the same air conditioner The perspective view which shows the intermediate member of the same air conditioner, a joint member, and a deformed joint member The perspective view which shows the corner connection member of the air conditioner The perspective view which shows the joint member and deformed joint member of the same air conditioner Sectional view of intermediate member, joint member and deformed joint member of the same air conditioner Sectional drawing which arranged the intermediate member of the air conditioner in one direction Sectional drawing which arranged the intermediate member of the air conditioner in two directions Sectional drawing which arranged the intermediate member of the air conditioner in three directions Sectional drawing which shows the fixation structure of the main member and outer wall panel of the air conditioner Sectional drawing which shows the fixation structure of the main member and outer wall panel of the air conditioner Sectional drawing which shows the fixing structure of the intermediate member and outer wall panel of the air conditioner Sectional drawing which shows the fixing structure of the intermediate member and internal panel of the air conditioner Sectional drawing which shows the structure of the fan chamber of the air conditioner Sectional drawing which shows the fixing structure of the drain pan of the air conditioner Sectional drawing which shows the structure of the drain pan of the air conditioner Sectional drawing which shows the fixing structure of the drain pan of the air conditioner Sectional drawing which shows the fixed structure of the flat base frame of the air conditioner The perspective view which shows the fixing structure of the connection bracket of the air conditioner Longitudinal sectional view showing the filter rail fixing structure of the air conditioner Plan sectional view showing the filter rail fixing structure of the air conditioner

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Overall structure)
As shown in FIG. 1 to FIG. 3, a casing 1 of an air conditioner includes a plurality of outer wall panels 2 forming side walls, a plurality of top panel panels 3 forming a ceiling, and a space inside the casing 1 in a plurality of chambers. An inner panel 4 that forms a partition wall is fixed to a frame 6. A door panel 7 is disposed in the front opening of each chamber of the casing 1, and the door panel 7 is attached to the frame 6 so that it can be opened and closed.

  The inside of the casing 1 includes an outside air chamber 8 into which outside air OA and return air RA flow, an air supply chamber 9 into which air-conditioning air supply SA adjusted in temperature and humidity flows, and the air supply SA as an air conditioning target system. It is divided into a fan chamber 10 for supplying air.

  The casing 1 has a return air port 11 in the top panel 3 corresponding to the outside air chamber 8, and has an air supply port 12 in the top panel 3 corresponding to the fan chamber 10, and the return air port 11 and the air supply port 12 communicates with the air conditioning system. An air supply passage 13 extending from the return air port 11 to the air supply port 12 is formed inside the casing 1.

A filter unit 16 including a pre-filter 14 and a medium performance filter 15 is mounted on the side of the outside air chamber 8 below the inner panel 4 that separates the outside air chamber 8 and the air supply chamber 9. In addition, a heat exchanger 19 and a humidifier (vaporization type) 20 composed of a cold / hot water coil are mounted on the air supply chamber 9 side. The outside air chamber 8 communicates with the air supply chamber 9 through the filter unit 16, the heat exchanger 19, and the humidifier 20. In the fan chamber 10, an air supply fan device 21 including a plug fan is installed.
(Operation of air conditioner)
The return air RA flowing into the outside air chamber 8 flows along with the outside air OA into the air supply chamber 9 through the filter unit 16 and the heat exchanger 19. At this time, the filter unit 16 removes dust and the like contained in the return air RA and the outside air OA by the pre-filter 14 and the medium performance filter 15, and the heat exchanger 19 removes the return air RA and the outside air OA at a predetermined humidity and temperature. And humidify with the humidifier 20.

The air flowing into the air supply chamber 9 is sent from the air supply port 12 to the air conditioning target system as the air supply SA by the air supply fan device 21.
(Frame structure)
As shown in FIGS. 4 to 7, in the casing 1, the drain pan 101 is arranged on the gantry 100 corresponding to the air supply chamber 9, and the flat gantry bottom plate 103 is arranged on the gantry 102 corresponding to the outside air chamber 8. ing.

  The frame 6 is disposed on the drain pan 101 and the flat gantry bottom plate 103. The frame 6 has a hollow main member 610 constituting the structural material of the casing 1 arranged in a column-like shape at the four corners of each of the gantry 100, 102, and the main member 610 in the form of a cross between the standing main members 610. , And further, an intermediate member 620 as an auxiliary material is disposed between a pair of parallel main members 610, the main member 610 and the main member 610 are connected, and the intermediate member 620 is fixed to the main member 610, Alternatively, the intermediate member 620 and the intermediate member 620 are connected. This connecting structure and fixing structure will be described later.

  Then, as shown in FIG. 25, in order to connect the frame 6 of the outside air chamber 8 and the frame 6 of the air supply chamber 9, the connection brackets 610a are attached to both the frames 6, and the connection brackets 610a are fixed to each other. .

Further, the filter rail 161 and the filter cover 162 are arranged in the outside air chamber 8, the coil support 191 is arranged in the air supply chamber 9, and the internal panel 4 and the air supply chamber 9 and the fan chamber separating the outside air chamber 8 and the air supply chamber 9. An internal panel 4 separating 10 is disposed.
(Linked structure)
As shown in FIGS. 8 to 11, the main member 610 and the intermediate member 620 are made of an aluminum extruded shape member that forms a concave polygon having a corner angle in the cross-sectional shape.

  The main member 610 has a main member outer surface 611 that forms a part of the frame outer surface of the frame 6, and the main member outer surface 611 and the main member outer surface 611 form a right-angled corner. Further, the main member inner side surface 612 forming a part of the frame inner side surface of the frame 6 is provided, and the main member inner side surface 612 and the main member inner side surface 612 form a right-angled corner angle. A main member groove 613 is formed in the main member outer surface 611 along the axial direction of the main member 610.

  The intermediate member 620 includes a wide base 621 and a peak 622. The base portion 621 is continuous with the main member outer surface 611 of the main member 610 and forms a part of the outer surface of the frame. The base member 621 is continuous with the main member inner surface 612 of the main member 610 with one of the inner surfaces of the frame. And an intermediate member inner side surface 624 forming a part. The peak portion 622 rises on the intermediate member inner surface 624 of the base portion 621, and a peak groove portion 626 is formed on the top surface along the axial direction of the intermediate member 620.

  The corner connecting member 630 that connects the main members 610 is made of a resin material, and includes a solid connecting main body portion 631 and a hollow connecting insertion portion 632 inserted into the main member 610.

  The connecting main body 631 forms a corner angle formed by a corner outer surface 633 that forms a part of the frame outer surface of the frame 6 and a corner inner surface 634 that forms a part of the frame inner surface of the frame 6. The corners that are perpendicular to each other are formed.

  The connection insertion portion 632 extends from the connection main body portion 631 in three axial directions perpendicular to each other, and a step corresponding to the thickness of the main member 610 at the boundary between the connection main body portion 631 and the connection insertion portion 632. 635. The frame 6 is a frame in which the main member outer surface 611 of the main member 610 and the corner outer surface 633 of the corner member 630 are continuously planar in a state where the main member 610 is inserted into the connecting insertion portion 632 of the corner connecting member 630. Form the outer surface. A reinforcing plate 636 is inserted into the connection insertion portion 632.

  The joint member 640 that joins the intermediate member 620 to the main member 610 is made of a resin material, and has a hollow joint insertion portion 641 that is inserted into the peak portion 622 of the intermediate member 620 and a main member inner surface 612 of the main member 610. It has a joint head 642 to be joined and a fitting recess 643 that forms a recess in the joint head 642. A reinforcing plate 644 is inserted into the joint insertion portion 641.

  The deformed joint member 650 that connects the intermediate member 620 and the intermediate member 620 is made of a resin material, and includes a hollow deformed joint insertion portion 651 that is inserted into the peak portion 622 of the intermediate member 620, and a deformed joint head 652. The deformed joint head portion 652 forms a fitting convex portion 653 that is inserted into the fitting concave portion 643 of the joint head portion 642 of the joint member 640. A reinforcing plate 654 is inserted into the deformed joint insertion portion 651.

  As shown in FIG. 12, the joint insertion portion 641 of the joint member 640 and the irregular shape joint insertion portion 651 of the irregular shape joint member 650 are fixed to the peak portion 622 of the intermediate member 620 with a fixing screw 660 made of a drill screw. The fixing screw 660 is disposed in the crest groove 626 on the top surface of the crest 622, and the head of the fixing screw 660 is lower than the crest surface of the crest 622 and is submerged in the crest groove 626.

  Although not shown, the connection insertion portion 632 of the corner connection member 630 is similarly fixed to the main member 610 with a fixing screw 660. The fixing screw 660 is disposed in the main member groove 613 of the main member 610, and the head of the fixing screw 660 is lower than the main member outer surface 611 of the main member 610 and is submerged in the main member groove 613. Therefore, the outer wall panel 2 can be in close contact with the main member outer surface 611 of the main member 610 without being obstructed by the fixing screw 660.

  As shown in FIG. 4, the intermediate member 620 includes a first horizontal intermediate member 620 a disposed between the cross-shaped main members 610 at the frame top or the bottom of the frame and a cross-shaped main member 610 at the side of the frame. A vertical intermediate member 620b disposed between the second horizontal intermediate member 620c disposed between the columnar main members 610 on the side of the frame, and a third horizontal intermediate member 620d disposed between the vertical intermediate members 620b. There is a fourth horizontal intermediate member 620e disposed between the member 610 and the vertical intermediate member 620b.

  As shown in FIG. 13, when the vertical intermediate member 620b is used alone and joined to the cross-tree main member 610, the first horizontal intermediate member 620a is joined to the cross-tree main member 610, When the two horizontal intermediate members 620c are joined to the columnar main member 610, the joint insertion portions 641 of the joint member 640 are connected to both ends of the vertical intermediate member 620b, the first horizontal intermediate member 620a, and the second horizontal intermediate member 620c. The joint head 642 of the joint member 640 is fixed to the main member inner side surface 612 of the main member 610 with a joining screw 661 made of a drill screw disposed in the fitting recess 643.

  In this state, a frame inner surface in which the intermediate member inner surface 624 and the main member inner surface 612 of the main member 610 are continuous is formed.

  Similarly, when the third horizontal intermediate member 620d is joined to the vertical intermediate member 620b, the joint insertion portions 641 of the joint member 640 are inserted into both ends of the third horizontal intermediate member 620d and fixed with the fixing screws 660. The joint head 642 of the joint member 640 is fixed to the intermediate member inner side surface 624 of the vertical intermediate member 620b with the joining screw 661 disposed in the fitting recess 643.

  As shown in FIG. 14, when the vertical intermediate member 620b arranged on the side of the frame and the first horizontal intermediate member 620a arranged on the top of the frame are connected and used, both ends of the first horizontal intermediate member 620a are used. The joint member 640 is inserted with a joint insertion portion 641 and fixed with a fixing screw 660, and the joint head 642 of the joint member 640 is arranged in the fitting recess 643 with the joining screw 661 and the main member inner side surface 612 of the main member 610. Secure to.

  Then, the deformed joint insertion portion 651 of the deformed joint member 650 is inserted into the upper end of the vertical intermediate member 620b and fixed with the fixing screw 660, and the fitting convex portion 653 of the deformed joint head 652 is fitted into the joint head 642. The vertical intermediate member 620b and the first horizontal intermediate member 620a are connected to each other by fitting into the mating recess 643.

  Further, the joint insertion portion 641 of the joint member 640 is inserted into the lower end of the vertical intermediate member 620b and fixed with the fixing screw 660, and the joint head 642 of the joint member 640 is disposed in the fitting recess 643. Then, the main member 610 is fixed to the inner surface 612 of the main member.

  In this state, an intermediate member inner surface 624 of the first horizontal intermediate member 620a and the vertical intermediate member 620b and a main member inner surface 612 of the main member 610 form a continuous frame inner surface.

  As shown in FIG. 15, when the vertical intermediate member 620b arranged on the side of the frame and the first horizontal intermediate member 620a arranged on the frame top and bottom of the frame are used in combination, the first horizontal intermediate member is used. A joint member 640 joint insertion portion 641 is inserted into both ends of 620a and fixed with a fixing screw 660, and a main member of the main member 610 is connected with a joint screw 661 in which a joint head 642 of the joint member 640 is disposed in the fitting recess 643. Fix to the inner surface 612.

  Then, the deformed joint insertion part 651 of the deformed joint member 650 is inserted into the upper and lower ends of the vertical intermediate member 620b and fixed with the fixing screw 660, and the fitting convex part 653 of the deformed joint head 652 is fixed to the joint head 642. The vertical intermediate member 620b and the first horizontal intermediate member 620a are connected by being fitted into the fitting recess 643.

  When the fourth horizontal intermediate member 620e is disposed between the columnar main member 610 and the vertical intermediate member 620b, the joint member 640 joint insertion portion 641 is inserted into one end of the fourth horizontal intermediate member 620e for fixing. The joint head 642 of the joint member 640 is fixed to the main member inner side surface 612 of the main member 610 with the joining screw 661 disposed in the fitting recess 643. Then, the joint insertion portion 641 of the joint member 640 is inserted into the other end of the fourth horizontal intermediate member 620e and fixed with the fixing screw 660, and the joint head portion 642 of the joint member 640 is disposed in the fitting recess 643. It fixes to the intermediate member inner surface 624 of the vertical intermediate member 620b with the joining screw 661.

  In this state, an intermediate member inner surface 624 of the first horizontal intermediate member 620a and the vertical intermediate member 620b forms a continuous frame inner surface.

In this way, by connecting the main member 610 and the intermediate member 620 with the corner connecting member 630, the joint member 640, and the deformed joint member 650, a frame outer surface and a frame inner surface that form a continuous plane can be formed. .
(Fixed structure details)
16 to 18 show the fixing structure of the outer wall panel 2. In the following, the outer wall panel 2 will be described as an example, but the same applies to the top panel 3. The outer wall panel 2, the top panel 3, and the door panel 7 basically have the same heat insulating panel structure. Further, the inner panel 4 and the flat gantry bottom plate 103 are composed only of an inner skin plate and an outer skin plate, and the urethane foam is filled between the inner skin plate and the outer skin plate.

  That is, it has a thin metal skin 901 disposed on the outer surface, a thin metal skin inner plate 902 disposed on the inner surface, and a resin frame 903 that forms the outer peripheral edge of the panel, and the outer skin 901 and the inner skin 902. Is inserted into the frame body 903, and foamed urethane forming a heat insulating material 904 is filled between the outer skin plate 901 and the inner skin plate 902 surrounded by the frame body 903.

  The outer wall panel 2 is fixed to the main member 610 and the intermediate member 620 of the frame 6 with panel fixing screws 701 made of drill screws. The panel inner surface of the outer wall panel 2 is in close contact with the main member outer surface 611 of the main member 610 and the intermediate member outer surface 623 of the intermediate member 620 forming the frame outer surface of the frame 6.

  As shown in FIGS. 13 to 15, the main member outer surface 611 of the main member 610 and the corner outer surface 633 of the corner member 630 form a frame outer surface continuously in a planar shape, and each frame of the frame 6 Since the outer side surface forms a plane that is continuous in a rectangular frame shape, the panel inner side surfaces of the outer wall panel 2 and the top panel 3 are also in close contact with the corner outer side surface 633 of the corner member 630. Therefore, there is no factor that inhibits the close contact between the outer wall panel 2 and the top panel 3 on the outer surface of each frame 6.

  The panel fixing screw 701 is disposed in the screw hole 702 of the outer wall panel 2 (top panel 3). The screw hole 702 passes through the outer skin plate 901 and the heat insulating material 904 and reaches the inner skin plate 902, and a resin collar 703 which is a heat insulating material is inserted therein.

  The collar 703 has a hollow portion 703a on the outer skin plate 901 side outside the axial direction of the panel fixing screw 701, and a solid portion 703b on the inner skin plate 902 side inside the axial direction of the panel fixing screw 701. The solid portion 703b has a through hole 703c in the axial direction of the panel fixing screw 701. The end surface of the solid portion 703b forms a step 703d between the hollow portion 703a and the through hole 703c, and the hollow portion 703a abuts the opening edge of the screw hole 702 at the end portion on the outer skin plate 901 side. It has a flange portion 703e, and a cap 703f is attached to the opening.

  The panel fixing screw 701 is inserted into the through hole 703c through the hollow portion 703a, and is further screwed into the endothelial plate 902, the main member 610, and the intermediate member 620, and the tips remain inside the main member 610 and the intermediate member 620. . The panel fixing screw 701 abuts the step 703d of the collar 703 at the head to press the collar 703 against the main member 610 and the intermediate member 620, and relatively holds the main member 610 or the intermediate member 620 by screwing the screw portion. Attract to collar 703.

  In this state, the panel fixing screw 701 sandwiches the outer skin plate 901, the heat insulating material 904, and the inner skin plate 902 of the outer wall panel 2 between the flange portion 703 of the collar 703, the main member 610, and the intermediate member 620. 2 is securely fixed to the main member 610 or the intermediate member 620.

  Further, the panel fixing screw 701 has the tip stayed in the closed space inside the main member 610 or the intermediate member 620, the head stayed in the closed space of the hollow portion 703a to which the cap 703f is attached, and the heat insulating material 904 and There is no contact with the skin plate 901. Therefore, heat conduction does not occur between the inside and the outside of the casing 1 through the panel fixing screw 701, and the screw hole 702 of the outer wall panel 2 is thermally insulated.

  Further, in the hollow portion 703a of the collar 703, a gap 704 exists between the cap 703f attached to the opening of the hollow portion 703a and the head portion 701a of the panel fixing screw 701, so that the heat insulation of the hollow portion 703a is improved. Furthermore, heat insulation is ensured by inserting a heat insulating material into the gap 704.

  As shown in FIG. 19, the inner panel 4 is in close contact with the intermediate member inner surface 624 of the vertical intermediate member 620b or the first horizontal intermediate member 620a. Since the intermediate member inner surface 624 of the vertical intermediate member 620b and the first horizontal intermediate member 620a forms a continuous frame inner surface, a factor that inhibits the close contact with the inner panel 4 on the frame inner surface of the frame 6 Does not exist.

  As shown in FIG. 20, in the fan chamber 10, an anti-vibration support 110 that is bent at a right angle with the intermediate member inner side surface 624 at the corner of the fourth horizontal intermediate member 620 e as a mounting seat surface is disposed. Is fixed to the fourth horizontal intermediate member 620e with a fixing screw 110a, and a lower closing plate 111 that forms the bottom surface of the fan chamber 10 is disposed above the anti-vibration support 110, and between the anti-vibration support 110 and the lower closing plate 111. A vibration spring support 110 and a lower closing plate 111 are connected by connecting bolts and nuts 113. A rubber canvas 114 that is in contact with the inner surface of the outer wall panel 2 is attached to the edge of the lower closing plate 111.

  As shown in FIGS. 6 and 21 to 23, the drain pan 101 has a peripheral edge portion 101 a made of a resin material, and thermally insulates between the gantry 100 and the main member 610 of the frame 6. An outer skin 101b and an inner skin 101c are arranged with a peripheral edge 101a in between, and a heat insulating material 101d is formed by filling foamed urethane into an inner space surrounded by the outer skin 101b and the inner skin 101c. And it has the drain pipe 101e in a side part, and the bottom part makes the inclined surface of a downward slope toward the drain pipe 101e. The drain pan 101 is fixed by a drain pan fixing screw 104 inserted from the gantry 100 side with a peripheral edge portion 101 a sandwiched between the gantry 100 and the main member 610. The distal end of the drain pan fixing screw 104 stays inside the main member 610 and is not exposed inside the casing 1. Therefore, the drain pan 101 thermally insulates the inside and the outside of the casing 1.

  As shown in FIG. 24, the flat gantry bottom plate 103 arranged on the gantry 102 of the outside air chamber 8 is fixed by being sandwiched between the gantry 102 and the main member 610 with a bottom plate fixing screw 105 inserted from the gantry 102 side. . The tip of the bottom plate fixing screw 105 stays inside the main member 610 and is not exposed inside the casing 1. Therefore, the flat gantry bottom plate 103 thermally insulates the inside and the outside of the casing 1.

  Therefore, it is not necessary to thermally insulate the gantry 100, 102, and work such as blowing urethane is unnecessary.

  As shown in FIGS. 26 and 27, the main member 610 fixed to the gantry 100 of the air supply chamber 9 and the main member 610 fixed to the gantry 102 of the outside air chamber 8 connect the connection brackets 610 a attached to the main member 610. Both are connected by fixing with the bolt 610b.

  A filter closing plate 670 is fixed to the main member inner surface 612 of the main member 610 of the outside air chamber 8 with a fixing screw 671. The filter closing plate 670 closes the gap between the outer periphery of the filter unit 16 and the inner surface 612 of the main member, and the filter rail 161 and the rail support 163 are fixed to the filter closing plate 670 with fixing bolts 164. . The filter rail 161 has a first lane 165 for inserting the medium performance filter 15 and a second lane 166 for inserting the pre-filter 14.

  A filter cover 162 disposed between the pre-filter 14 and the medium performance filter 15 and the door panel 7 is in close contact with the sides of the pre-filter 14 and the medium performance filter 15.

  A coil closing plate 673 is fixed to the inner surface 612 of the main member 610 of the air supply chamber 9. The coil closing plate 673 closes the gap between the outer periphery of the heat exchanger 19 and the main member inner surface 612.

OA outside air RA return air SA air supply 1 casing 2 outer wall panel 3 top panel 4 inner panel 6 frame 7 door panel 8 outside air chamber 9 air supply chamber 10 fan chamber 610 main member 610a connection bracket 611 main member outer surface 612 inside main member Side surface 613 Main member groove 620 Intermediate member 620a First horizontal intermediate member 620b Vertical intermediate member 620c Second horizontal intermediate member 620d Third horizontal intermediate member 620e Fourth horizontal intermediate member 621 Base 622 Mountain 623 Intermediate member outer surface 624 Intermediate member inner surface 625 Base groove portion 626 Mountain groove portion 630 Corner connecting member 631 Connection main body portion 632 Connection insertion portion 633 Corner outer surface 634 Corner inner surface 635 Step 636 Reinforcement plate 640 Joint member 641 Joint insertion portion 642 Joint head portion 643 Joint recess 644 Reinforcing plate 650 Deformed joint member 651 Deformed joint insertion portion 652 Deformed joint head 653 Fitting convex portion 654 Reinforcing plate 660 Fixing screw 661 Joining screw 701 Panel fixing screw 701a Head 702 Screw hole 703 Collar 703a Hollow portion 703b Solid portion 703c Through Hole 703d gap 703e flange 703f cap 704 gap

Claims (4)

  The panel that forms the outer wall of the casing is fixed to the frame that constitutes the casing of the air conditioner. A screw hole is formed in the panel that forms the outer wall, and a heat-insulating collar is inserted into the screw hole. A panel fixing structure for an air conditioner, wherein the panel is fixed to the frame with panel fixing screws. The collar has a hollow part outside the axial direction of the panel fixing screw, a solid part inside the axial direction of the panel fixing screw, and a through hole in the axial direction of the panel fixing screw in the solid part The solid part has an end face that forms a step between the hollow part and the through hole, and the hollow part has a flange part that contacts the opening edge of the screw hole,
The panel fixing screw is inserted into the through hole through the hollow part of the collar, the tip stays inside the frame, touches the collar step at the head and presses the collar against the frame, and attracts the frame to the collar relatively The panel fixing structure for an air conditioner according to claim 1, wherein the panel is fixed between the collar flange and the frame.   3. The panel fixing structure for an air conditioner according to claim 2, wherein a gap is provided between the cap attached to the opening of the hollow portion and the head of the panel fixing screw in the hollow portion of the collar.   4. A panel fixing structure for an air conditioner according to claim 3, wherein a heat insulating material is inserted into a gap between the cap mounted on the opening of the hollow portion and the head of the panel fixing screw in the hollow portion of the collar. .

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