JP2001174046A - Ceiling embedded type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a pair of the same heat exchangers bent nearly in an L-shape enclosing a blower nearly squarely by devising the constitution of side boards of the air conditioner and using a pair of the same side boards. SOLUTION: A pair of fin tube type heat exchangers 9 formed approximately in an L-shape enclosing a blower about squarely are arranged in opposition. In both opposed ends of the paired heat exchangers 9, the opposed end faces on the side of hairpins 26 of heat transfer tubes are connected to each other for side board 24. In this air conditioner, flanges are provided extendedly each at 45 deg. from the opposed ends of the opposed side board 24. Each flange is divided symmetrically into an upper flange 28 and a lower flange 29, the upper flange 28 and the lower flange 29 are each bent half the board thickness, screw holes 30 and insertion holes 31 for screws 32 to be screwed in the screw holes 30 are formed symmetrically in the upper flange 28 and the lower flange 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted air conditioner, and more particularly, to a structure for mounting a heat exchanger.

[0002]

2. Description of the Related Art As shown in FIGS. 1 and 12, a conventional ceiling-mounted air conditioner is provided with a suction port 15 at the center on the lower surface of a main body casing 1 embedded in a ceiling surface 2. A panel provided with air outlets 11 provided with wind direction change plates 17 on four sides around the port 15 is attached, and the air passage connecting the air inlet 15 and the air outlet 11 formed in the main body casing 1 is provided with an air passage. A fan 6 composed of a motor 7 and a fan 8 having a vertical drive shaft opposed to the suction port 15, and a pair of fin tube-shaped heat bent in a substantially L shape so as to surround the blower 6 in a substantially rectangular shape. The heat exchangers 9 are arranged opposite to each other, and the opposite end faces of the heat exchanger tubes 25 on the hairpin 26 side of the opposite ends of the same pair of heat exchangers 9 are respectively attached to the side plates 4 attached thereto.
0, 41, the pair of side plates 4
The configuration in which the pair of heat exchangers 9 are connected by 0 and 41 is a flange extending at an angle of 45 ° from the opposing ends of the side plates 40 and 41 provided on the end faces of the pair of heat exchangers 9 on the hairpin 26 side. Parts 42 and 43 are provided, and one of the side plates 40 is provided.
The screw hole 30 is formed in the flange portion 42 of the above, and the insertion hole 31 for inserting the mounting screw 32 screwed into the screw hole 30 is formed in the flange portion 43 of the other side plate 41, and the flange portions 42, 43 are formed. The connection was made by screwing with the mounting screw 32.

[0003]

However, in the above construction, one of the pair of side plates forms a screw hole and the other forms an insertion hole, so that the same side plate cannot be used. In addition to the need for two types of molds, it is not possible to use the same pair of heat exchangers equipped with the side plates, increasing the initial investment cost for mold production, and increasing the number of parts. There is a problem that the parts management cost increases due to the increase in the number of components. In the present invention, in view of the above problems, by devising the configuration of the side plate so that the same pair of side plates can be used,
It is an object of the present invention to provide a ceiling-embedded air conditioner that can use the same pair of heat exchangers bent in a substantially L-shape that surround a blower in a substantially square shape.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a suction port is provided at the center on the lower surface of a main body casing embedded in a ceiling surface, and wind direction change plates are provided on four sides around the suction port. A motor having a vertical drive shaft opposed to the suction port in an air passage connecting the suction port and the blow port formed with the panel provided with the blow port, A blower comprising a fan and a pair of fin-tube heat exchangers bent in a substantially L-shape so as to surround the blower in a substantially rectangular shape are disposed facing each other. In a ceiling-embedded air conditioner in which the opposed end faces of the heat transfer tubes on the hairpin side are connected by side plates attached to the heat transfer tubes, respectively, an angle of 45 ° from the opposed end of the opposed side plates of the pair of heat exchangers. Provide a flange part that extends The flange portion is vertically symmetrically divided into an upper flange and a lower flange, and the upper flange and the lower flange are bent back and forth by half each in the front and rear directions, and the upper flange and the lower flange are screwed vertically symmetrically. A hole and an insertion hole through which a mounting screw screwed into the screw hole is inserted are formed.

The upper flange and the lower flange are provided with a notch groove on one side and a locking claw on the other side for locking in the notch groove at a vertically symmetric rotational position.

[0006] Further, a fixing flange having an insertion hole for inserting a fixing screw screwed into the top surface of the main body casing is provided at the upper and lower ends of either the upper flange or the lower flange. .

Further, the locking claw is provided so that the open side of the locking claw is formed in the direction of the fixing flange.

Further, the mounting screw and the screw hole are formed as a self-tapping screw and a burring hole.

Further, the side plate is formed of a steel plate, and the locking claw and the fixing flange are formed integrally with the side plate.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the embodiments of the present invention shown in FIGS.
First, the overall configuration of the ceiling-embedded air conditioner shown in the sectional view of FIG. 1, the exploded perspective views of FIGS. 2 and 3, and the perspective view of FIG. 4 will be described. Reference numeral 1 denotes a top plate 4 formed by press-forming a steel plate such as SECC (Electro Galvanized Steel Plate) having a heat insulation wall 3 embedded in a ceiling surface 2 and formed of a heat insulating material such as styrene foam inside, and a side plate. 5, a blower including a motor 7 and a fan 8 provided at the center of the main body casing 1 and having a vertical drive shaft, and 9 is opposed to the blower 6 so as to surround the blower 6 in a substantially rectangular shape. A pair of fin-tube type heat exchangers 10 bent in a substantially L-shape are provided below the heat exchanger 9 and provided with air outlets 11 on four peripheral sides and are formed of a heat insulating material such as styrene foam. The dew tray 12 is provided at the center of the dew tray 10 and has an electrical component storage portion 13 opened downward on one side and a storage portion cover 14 for covering the electrical component storage portion 13.
5 is a bellmouth formed.

Reference numeral 16 denotes a wind direction changing plate provided to surround the periphery of the dew receiving tray 10 and rotatably rotatably supporting a wind direction changing plate 17 provided at the four side outlets 11, and connecting and driving the wind direction changing plate 17. A panel frame 19 made of a synthetic resin such as ABS (acrylonitrile butadiene styrene), in which the device 18 is mounted on four corners, covers the inlet 15 from both sides and the inside of the outlet 11 and has a suction opening in the center. Openable and Detachable ABS (Acrylic Nitrile Butadiene Styrene) with Multiple Filters 20 and Filter 21
A center panel 22 made of a synthetic resin such as a synthetic resin, such as ABS (acrylonitrile butadiene styrene), covers the outer periphery of the outlet 11 from the outer periphery of the four corners 23 of the central panel 19. A panel is formed by the panel frame 16, the center panel 19, and the decorative frame 22.

FIG. 5 is a perspective plan view of a main part of FIG.
A detailed configuration of the first embodiment of the present invention, which is shown in a perspective view of a main part of FIG. 8, a plan view of a main part of FIG. 8, and a part diagram of a side plate of FIG. Reference numeral 24 denotes an SECC provided with flange portions 27 attached to opposed end surfaces on the hairpin 26 side of the heat transfer tube 25 among the opposed ends of the pair of heat exchangers 9 and extending at an angle of 45 ° from each of the opposed ends. (Electro-galvanized steel sheet) A pair of side plates 28 and 29 are formed by dividing the flange portion 27 vertically symmetrically and bending each of the upper and lower flanges half forward and backward by half the plate thickness. , 30 and 31
And a self-tapping type mounting screw 32 screwed into the burring hole-shaped screw hole 30 provided in the upper flange 28 and the lower flange 29 symmetrically in the vertical direction.
An insertion hole 33 is provided integrally with the upper or lower end of either the upper flange 28 or the lower flange 29 to insert a fixing screw 34 screwed to the top plate 4 which is the top surface of the main casing 1. This is a fixing flange having a hole 35 formed therein.

Next, the operation and effect of the above configuration will be described with reference to FIG. 5 to FIG. The flange portion 27 of the side plate 24 is vertically symmetrically divided into the upper flange 28 and the lower flange 29, and each is bent back and forth by half the thickness of the plate, and the screw holes are formed in the upper flange 28 and the lower flange 29. 30 and the insertion hole 31 are formed vertically symmetrically, so that a pair of side plates 2 of the same shape are formed.
4 may be attached to the opposite ends of the pair of heat exchangers 9 in a state where one is rotated, and only one type of the side plate 24 is required. The initial investment cost can be reduced by the type, and the component management cost can be reduced by reducing the type of the component. Further, a pair of heat exchangers 9 bent in a substantially L-shape with the side plates 24 attached thereto can be used by rotating one of the same heat exchangers 9 so as to face each other. However, the number of types of parts can be reduced, and parts management costs can be reduced. Since the size of the heat exchanger 9 is large, a reduction in the types of components in the sub-assembly state leads to a significant reduction in component management costs.

At the upper and lower ends of either the upper flange 28 or the lower flange 29, there are provided fixing flanges 33 each having an insertion hole 35 for inserting a fixing screw 34 screwed to the top plate 4 of the main body casing 1. Thereby, the opposite ends of the pair of heat exchangers 9 can be simultaneously fixed to the top plate 4.

The mounting screw 32 and the screw hole 30 are
By using a self-tapping screw and a burring hole, there is no need to perform tapping when the side plate 24 is manufactured as a component, and the cost of the component can be reduced. In addition, since the screw hole 30 is formed as a burring hole that can be formed at the time of press working, the number of threads can be increased when the mounting screw 32, which is the self-tapping type screw, is screwed in while being cut off. Without raising the risk of being screwed.

Next, a description will be given of a second embodiment of the present invention shown in the perspective view of the main part of FIG. 10 or FIG. The configuration of the attachment portion between the side plates is different from that of the first embodiment. Three
6 is a notch groove formed in one of the upper flange 28 or the lower flange 29, and 37 is provided integrally with the other of the upper flange 28 or the lower flange 29 in a vertically rotationally symmetric position and is engaged with the notch groove 36. The open side 38 is a locking claw formed in the direction of the fixing flange 33.

With such a configuration, the assembling is temporarily stopped by the locking claws 37 during assembling, so that assembling becomes easier, and the number of the mounting screws 32 can be reduced, thereby reducing the number of assembling steps. be able to.

Further, since the open side 38 of the locking claw 37 is formed in the direction of the fixing flange 33,
Since the weight of the heat exchanger 9 acts in the direction in which the locking claws 37 are hooked, even if the mounting screws 32 for attaching the side plates 24 loosen and come off, there is no possibility that the heat exchanger 9 will fall. . Note that, as shown in FIG. 10 or FIG. 11, the same is true regardless of whether the locking claw 37 is on the upper flange 28 or the lower flange 29.

The side plate 24 is formed of a steel plate such as SECC (Electro Galvanized Steel Plate), and the locking claw 37 and the fixing flange 33 are formed integrally with the side plate 24 to thereby form the heat exchanger. Since the number of components for mounting the component 9 can be reduced, component costs and component management costs can be reduced.

[0020]

As described above, according to the present invention,
By devising the configuration of the side plates, the same pair of side plates can be used, and a substantially rectangular shape surrounding the blower is provided.
A ceiling embedded type air conditioner in which the same pair of heat exchangers bent in a letter shape can be used.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the overall configuration of a ceiling-mounted air conditioner.

FIG. 2 is an exploded perspective view showing an upper part of the entire configuration of the ceiling-mounted air conditioner.

FIG. 3 is an exploded perspective view showing a lower portion of the entire configuration of the ceiling-mounted air conditioner.

FIG. 4 is a perspective view showing the overall configuration of the ceiling-mounted air conditioner.

FIG. 5 is a perspective plan view of a main part of the ceiling-mounted air conditioner according to the present invention as viewed from below.

FIG. 6 is a perspective view of a main part of the first embodiment of the ceiling-mounted air conditioner according to the present invention.

FIG. 7 is a perspective view of a main part of the first embodiment of the ceiling-mounted air conditioner according to the present invention.

FIG. 8 is a plan view of a main part of the first embodiment of the recessed ceiling air conditioner according to the present invention.

FIGS. 9A and 9B are part views of a side plate of the first embodiment of the embedded ceiling air conditioner according to the present invention, wherein FIG. 9A is a sectional view and FIG. 9B is a plan view.

FIG. 10 is a perspective view of a main part of a second embodiment of the embedded ceiling air conditioner according to the present invention.

FIG. 11 is a perspective view of a main part of a second embodiment of the ceiling-mounted air conditioner according to the present invention.

FIG. 12 is a perspective view of a main part of a conventional ceiling-mounted air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body casing 2 Ceiling surface 6 Blower 7 Motor 8 Fan 9 Heat exchanger 11 Outlet 15 Inlet 16 Panel frame 17 Wind direction change board 19 Central panel 22 Decorative frame 24 Side plate 25 Heat transfer tube 26 Hairpin 27 Flange part 28 Upper flange 29 Lower Flange 30 (burring hole-shaped) screw hole 31 insertion hole 32 (self-tapping type) mounting screw 33 fixing flange 34 fixing screw 35 insertion hole 36 notch groove 37 locking claw 38 open side of locking claw

Claims (6)

[Claims] 1. A panel provided with an air inlet at the center and air outlets provided with wind direction change plates on four sides around the air inlet on a lower surface of a main body casing embedded in a ceiling surface,
In an air passage connecting the suction port and the air outlet formed in the main body casing, a blower including a motor and a fan having a vertical drive shaft opposed to the suction port, and the blower are formed into a substantially rectangular shape. A pair of fin-tube heat exchangers bent in a substantially L shape so as to surround each other are arranged facing each other, and of the opposite ends of the same pair of heat exchangers, the opposite end faces of the heat transfer tubes on the hairpin side are arranged. A ceiling embedded type air conditioner connected by side plates attached to each of the pair of heat exchangers;
A flange portion extending at an angle of 5 ° is provided, the flange portion is vertically symmetrically divided into an upper flange and a lower flange, and the upper flange and the lower flange are bent back and forth by half each in the thickness direction, A ceiling-embedded air conditioner, characterized in that the upper flange and the lower flange are formed symmetrically in the vertical direction with a screw hole and an insertion hole for inserting a mounting screw screwed into the screw hole. 2. An upper flange and a lower flange,
2. The ceiling-mounted air conditioner according to claim 1, wherein a notch groove is provided on one side and a locking claw for locking the notch groove on the other side is provided in a vertically rotationally symmetric position. 3. A fixing flange provided with an insertion hole for inserting a fixing screw screwed into a top surface of the main body casing at an upper or lower end of either the upper flange or the lower flange. The ceiling-mounted air conditioner according to claim 2. 4. The ceiling-embedded air conditioner according to claim 3, wherein the locking claw is provided so that an opening side of the locking claw is formed in a direction of the fixing flange. 5. The ceiling-mounted air conditioner according to claim 1, wherein the mounting screw and the screw hole are formed as a self-tapping screw and a burring hole. 6. The air conditioner according to claim 3, wherein the side plate is formed of a steel plate, and the locking claw and the fixing flange are formed integrally with the side plate. .