JPH08178345A - Ceiling cassette type air-conditioner - Google Patents

Abstract

PURPOSE: To provide a ceiling cassette type air-conditioner, capable of reducing man-hours required by assembling work by reducing the number of parts. CONSTITUTION: In a ceiling cassette type air-conditioning machine, provided with a fan 28, arranged in a casing body 22 at the central part thereof so as to be faced downward, a heat exchanger 26, provided around the outer periphery of the fan 28, an air suction port 24, arranged at the center of the lower surface of the casing body 22, and an air outlet port 25, arranged around the outer periphery thereof, a frame work structural body 31, constituted of metallic members and the like to fix and support the fan 28 and the heat exchanger 26, is provided in the casing body 22. Further, the air-conditioning machine is provided with a heat insulating casing body 30, constituted as a different body from the frame work structural body 31 to cover the outer shell of the frame work structural body 31 and form a ventilating passage therein while consisting of a synthetic resin foamed body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling cassette type air conditioner in which an indoor unit is incorporated in a ceiling of a room, and more particularly, to improve the housing structure of the indoor unit, the ceiling panel structure and the electrical component box mounting structure. The present invention relates to a ceiling cassette type air conditioner.

[0002]

2. Description of the Related Art FIG. 9 is a vertical cross-sectional view of an indoor unit of a four-way outlet type ceiling cassette type air conditioner, and FIG. 10 is an exploded structural view thereof. As shown in the figure, the indoor unit 1a of this type of air conditioner 1 is attached to the ceiling of the room via a lifting member 2 and the like. A suction port 4 is formed in the center of the ceiling panel 3 of the indoor unit 1a,
An air outlet 5 is formed around it. This outlet 5
Is provided with a louver 5a for adjusting the blowing direction.

Inside the indoor unit 1a, a rectangular indoor heat exchanger 6 is provided so as to separate the inlet 4 and the outlet 5. At the center of the inside of the indoor heat exchanger 6, a turbo fan 8 driven by a fan motor 7 is installed.
Is provided, and the air passing through the indoor heat exchanger 6 is blown to the air outlet 5.

A drain pan 9 formed of a foam material such as Styrofoam is provided below the indoor heat exchanger 6 for collecting dehumidified water and connecting a suction side and a blow side of the turbo fan 8. The air is separated and is guided to the air outlet 5. This drain pan 9 is a base 10
The drain pump 11 is provided.

These indoor heat exchanger 6 and turbo fan 8
The housing 12 of the indoor unit 1a for housing the sheet metal housing 1 and the like is provided in order to prevent dew condensation due to a temperature difference from the room air.
A heat insulating material 12b is attached to the entire inner and outer surfaces of 2a. The housing 11 has a long octagonal shape.

Further, the ceiling cassette type air conditioner 1 includes
An electric parts box (not shown) in which electric parts such as a PC board, a transformer and a relay are mounted is stored. This electric component box has a structure such as being fixed to the ceiling panel 3 or the like, or attached so as to be slidable in the vertical direction so that the assembled electric component can be pulled out.

[0007]

The conventional ceiling cassette type air conditioner has the following problems. That is, since the heat insulating material 12b is attached to the entire inner and outer surfaces of the long octagonal sheet metal housing 12a, the number of parts is increased, and there is a problem that the assembly and attaching work requires man-hours.

Further, when the electric parts box is fixed to the ceiling panel 3 or the like, if an attempt is made to replace or repair the electric parts without removing the ceiling panel 3, the central panel will be removed. There is a problem that a large work space is required. Further, when the electric component box is slidably mounted in the vertical direction and has a structure capable of pulling out the assembled electric component, there is a problem that the electric component is difficult to see, wiring is entangled, and it is difficult to pull out.

In view of the above-mentioned problems, an object of the present invention is to reduce the number of parts to reduce the man-hours required for assembling work, and to observe electric parts even in a narrow working space.
It is an object of the present invention to provide a ceiling cassette type air conditioner that can be easily replaced or repaired.

[0010]

In order to achieve the above object, a first aspect of the invention is to dispose a blower in a central portion of a housing in a downward direction and to equip an outer peripheral portion thereof with a heat exchanger. In a ceiling cassette type air conditioner having an air intake port in the center of the lower surface of the housing and an air outlet in the outer peripheral portion thereof, the blower and the heat exchanger, which are made of metal members, are fixed in the housing. A supporting frame structure and a heat insulating casing composed of a synthetic resin foam body that is configured separately from this frame structure and covers the outer shell of this frame structure by partitioning and forming a ventilation path inside. It is equipped with the second
The invention of claim 1 includes a blower and a heat exchanger in the housing, an air suction port is provided in a central portion on the lower surface side of the housing, and an air outlet is provided outside thereof, and an electric component is arranged on a lower surface of the air suction port in the housing. Together with a ceiling cassette type air conditioner including a ceiling panel having a suction panel that can be taken out at a portion that covers the lower surface of the housing and faces the air suction port, the electrical component is attached to the suction panel mounting portion of the ceiling portion. The electric parts are arranged so as to face each other, and the electric parts are attached so as to be slidable in the horizontal direction.

[0011]

According to the first invention, the housing of the indoor unit is
Since it is made up of a heat insulating casing made of synthetic resin foam forming an air passage inside and a skeleton structure, the number of parts is reduced compared to the conventional housing structure, and the man-hours required for the assembly work are reduced. To be done. In addition, this heat insulation housing
Since it is reinforced by the frame structure made of a material having high strength such as a metal member, the insufficient amount of strength of the heat insulating casing is compensated and it can withstand normal use.

Further, according to the second invention, since the electric component mounting base is slid with respect to the electric component mounting box for mounting the electric components, the assembled electric component is moved together with the electric component mounting base to be mounted on the ceiling panel. The hidden electrical components are exposed in the opening where the center panel was removed. Therefore, it is possible to perform the work such as replacement and repair while looking at the electric parts, and the work is easy even in a narrow work space.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a ceiling cassette type air conditioner according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view showing a first embodiment of a ceiling cassette type air conditioner according to the present invention, and FIG. 2 is an exploded structural view thereof. As shown in the figure, the indoor unit 21a of the ceiling cassette type air conditioner 21 of the first embodiment is of a four-direction blowing type. The ceiling panel 23a of the indoor unit 21a has a square shape. This ceiling panel 23
An air suction port 24 is formed at the center of a, and an air outlet 25 is formed around it. The air outlet 25 is provided with a louver 25a for adjusting the blowing direction.

In the indoor unit 21a, a round indoor heat exchanger 26 having a perfect circular shape is provided so as to separate the air inlet 24 and the air outlet 25. A turbo fan 28 driven by a fan motor 27 is provided in the center of the inside of the indoor heat exchanger 26 so that the air passing through the indoor heat exchanger 26 is blown to the air outlet 25. Has become. These round indoor heat exchangers 2
6, the fan motor 27 and the turbo fan 28 are arranged concentrically.

A drain pan portion 23b is integrally formed on the inner surface of the ceiling panel 23a, so that the ceiling panel and the drain pan are integrally formed.
It is formed as 3. Since the ceiling panel and the drain pan are integrally formed in this way, the conventional base for reinforcing the drain pan is unnecessary. This drain pan 23b
Is equipped with a drain pump 29. Therefore, the drain pan portion 23b collects the dehumidified water, separates the suction side and the blowing side of the turbofan 28, and guides the blown air to the blowout port 25.

The housing 22 of the indoor unit 21a for accommodating the indoor heat exchanger 26, the turbo fan 28, etc., is composed of a heat insulating housing 30 integrally formed by a synthetic resin foam material such as styrofoam. It also serves as an air passage formation. This heat-insulating housing 30 has a regular octagonal shape and makes the air passage resistances in the four directions uniform. Portions of the fan motor 27 and the turbofan 28, which are inscribed on the inner surface of the heat insulating casing 30, are required to have a high strength. The frame structure 31 is made of a material having a high strength such as a metal member. .

As shown in the figure, the frame structure 31 includes a pair of metal frames 31a, 31a bent in a convex shape.
And supporting frames 31b and 31b bridged between the pair of metal frames 31a and 31a, and the supporting frames 31b and 3b.
1b, and a fan mounting body 31c that is bridged between 1b. Further, a screw hole 32 for mounting the fan motor 27 is formed in the fan mounting body 31c. Further, hanging member fixing portions 31d for hanging and fixing the metal frame bodies 31a, 31a to the ceiling portion are formed at the lower end portions of the metal frame bodies 31a, 31a, respectively. The hanging member fixing portions 31 d, which are positioned in four sides of the frame structure 31 in a leg shape, have a regular octagonal heat insulating casing 30.
Are formed so as to protrude from the openings 30a formed at the four corners of the.

Next, the operation of the ceiling cassette type air conditioner 21 of the first embodiment will be described. As described above, the housing 22 of the indoor unit 21a is formed by the heat insulating casing 30 such as styrofoam and the frame structure 31. Therefore, as compared with the conventional housing structure, the number of parts can be significantly reduced, and the number of steps required for the assembling work can be reduced.

Although the strength is low only with this heat insulating casing 30,
Since the frame structure 31 configures the parts of the fan motor 27 and the turbo fan 28 that require strength, the frame structure 31 compensates for the lack of strength of the heat insulating housing 30 and can withstand normal use.

Further, since the ceiling panel and the drain pan are formed as a drain pan integrated type panel 23 having an integral structure, when the ceiling panel 23a is removed, the drain pan portion 23b also comes off integrally and there is no base for reinforcing the drain pan. Maintenance such as cleaning and drain cleaning can be easily performed.

Furthermore, since the turbofan 28, the round indoor heat exchanger 26 and the blowout air passage are concentrically arranged, the airflow in four directions is well balanced and the heat exchange rate can be greatly improved. It is a thing.

FIG. 3 is a perspective view showing the appearance of a second embodiment of the ceiling cassette type air conditioner according to the present invention. As shown, the ceiling cassette type air conditioner 41 of the second embodiment.
The indoor unit 41a is a two-way blow-out type. The ceiling panel 43 of the indoor unit 41a has a rectangular shape. Suction ports 44 are formed on both sides of a suction panel 43a formed at the center of the ceiling panel 43, and air outlets 45 are formed on both sides thereof. This outlet 4
A louver 46 that adjusts the blowing direction is provided on the No. 5.

As shown in FIG. 4, the suction panel 43a is removed from the indoor unit 41a, and is a schematic perspective view showing the mounting position of the electrical component box. As shown in the figure, a filter 47 is detachably attached to the inside of the suction panel 43a. On one side of the indoor unit 41a,
A rectangular parallelepiped electric component box 48 is attached along the width direction. Therefore, normally, only a part of the electrical component box 48 is exposed in the opening 43b of the ceiling panel 43 from which the suction panel 43a is removed.

FIG. 5 is a front view showing the mounting structure of the electric parts box, which is a modification of the mounting structure of the electric parts box in the second embodiment. As shown in the figure, the electric component box 48 is fixed to the main body of the indoor unit 41a by fixing screws 49 screwed on both edges in the longitudinal direction. In this electric parts box 48, the electric parts mount 5
0 is attached so that it can slide freely. Specifically, elongated holes 51 are formed in both longitudinal edges of the electric component mounting base 50 along the longitudinal direction thereof, and mounting screws 52 are inserted into the respective long holes 51 and screwed into the electric component box 48. Has been done. Then, the assembled electric component 53 is mounted on the electric component mount 50.
Is fixed, and the assembled electric component 53 is, for example,
Relay 53a, surge killer 53b, capacitor 53
c, a transformer 53d, a PC board 53e, a terminal board 53f and the like.

FIG. 6 is a front view showing a second mounting structure of the electric parts box in the second embodiment. As shown in the figure, the electric component box 48 is slidably attached to the main body of the indoor unit 41a. Specifically, elongated holes 51 are formed in both longitudinal edges of the electric component box 48 along the longitudinal direction, and mounting screws 52 are inserted into the elongated holes 51 and screwed into the main body of the indoor unit 41a. Have been combined. In this electric parts box 48, the electric parts mount 5
0 is fixed by a fixing screw 49, and the relay 53a, the surge killer 53b, the capacitor 53c, the transformer 53 are mounted on the electric component mounting base 50 as described above.
The assembled electric component 53 including the d, the PC board 53e, the terminal board 53f, and the like is fixed.

Further, FIG. 7 is a front view showing a second mounting structure of the electric component box in the second embodiment. As illustrated, the electric component box 48 is fixed to the main body of the indoor unit 41a. As shown in FIG. 6, an electric component mount 50 is fixed to the electric component box 48, and the relay 5 is mounted on the electric component mount 50 as described above.
3a, a surge killer 53d, a capacitor 53c, a transformer 53d, a PC board 53e, a terminal board 53f, and the like are fixed as assembled electrical parts 53. That is, the electrical parts box 4
8. The electric component mount 50 and the assembled electric component 53 are fixed.

Next, the operation of the ceiling cassette type air conditioner 41 of the second embodiment will be described. As described above, according to the second mounting structure, the electric component box 48 can be slid along the longitudinal direction with the electric component mounting base 50 and the assembled electric components 53 with respect to the main body of the indoor unit 41a. it can.

That is, in the initial state shown in FIG. 7A, the opening 4 of the ceiling panel 43 with the suction panel 43a removed.
The PC board 53e and the terminal board 53f that form the assembled electric component 53 are exposed at 3b. By loosening the mounting screw 52 screwed to the main body of the indoor unit 41a,
The electric component box 48 is attached to the indoor unit 4 by the length of the long hole 51.
It can be slid along the width direction of 1a. FIG. 7B shows a state in which the relay 53a, the surge killer 53b, the capacitor 53c, and the transformer 53d are exposed in the opening 43b, and the electrical components hidden by the ceiling panel 43 come out to the work space. Will be

In the case of the first mounting structure, when the mounting screw 52 screwed into the electric component box 48 is loosened, the electric component mounting base 50 is attached to the indoor unit 41a by the length of the long hole 51. It can be slid along the width direction.

As described above, according to the second embodiment, the electrical component box 48, the electrical component mounting base 50 or the ceiling panel 43 can be attached to the indoor unit 4 by a simple operation of loosening the mounting screws 52.
Since it can be slid along the width direction of 1a, the electrical components hidden in the ceiling panel 43 are exposed in the opening 43b serving as a working space. Therefore, even in a narrow work space where the suction panel 43a is removed from the ceiling panel 43, it is possible to easily perform work such as replacement and repair while looking at the electric components.

FIG. 8 shows a modified example of the second embodiment, (a) is a schematic side view thereof, and (b) is a schematic sectional view taken along the line AA. In the first and second mounting structures, the electric component box 48 or the electric component mounting base 50 is provided.
Slot 51 and mounting screw 5 for sliding movement of
2, the bolt 54 and the nut 55 are used in this modification.

Specifically, the housing 4 of the indoor unit 41a
The bolt 54 is rotatably inserted through the width direction 2. The bolt 54 penetrates the electric component box 48 provided in the indoor unit 41 and is screwed into a nut 55 fixed to the electric component box 48. An assembled electric component 43 is fixed on the electric component box 48.

The head portion 54a of the bolt 54 and the flange portion 54b formed at the tip end of the bolt 54 prevent the bolt 54 from coming out of the insertion hole 56 formed in the housing 42.

According to the above modification, the head 5 of the bolt 54 is
By rotating the bolt 54 by manipulating the tool 4a with a tool, the electric component box 48 to which the nut 55 is fixed slides along the width direction of the indoor unit 41a. Therefore, similar to the first and second mounting structures described above, even in a narrow work space where the suction panel 43a is removed from the ceiling panel 43, it is possible to easily perform work such as replacement and repair while looking at the electric components. Is.

[0036]

As described above, according to the ceiling cassette type air conditioner of the present invention, the number of parts can be reduced to reduce the number of steps required for the assembly work, and the ceiling panel to the suction panel. Even in the small work space where the is removed, it is possible to easily perform the work such as replacement and repair while looking at the electric parts, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a first ceiling cassette type air conditioner according to the present invention.
It is a longitudinal section showing an example.

FIG. 2 is a first ceiling cassette type air conditioner according to the present invention.
It is an exploded structure figure showing an example.

FIG. 3 is a second ceiling cassette type air conditioner according to the present invention.
It is a perspective view which shows the external appearance of an Example.

FIG. 4 is a schematic perspective view showing a mounting position of the electrical component box with the central panel removed from the indoor unit.

FIG. 5 is a front view showing a first mounting structure of the electric component box in the second embodiment.

FIG. 6 is a front view showing a second mounting structure of the electric component box in the second embodiment.

7A and 7B show how the electric component box of the second mounting structure slides, FIG. 7A is a front view of an initial state, and FIG. 7B is a front view of a sliding movement state.

FIG. 8 shows a modified example of the second embodiment, (a) is a schematic side view thereof, and (b) is a schematic sectional view taken along the line AA.

FIG. 9 is a vertical cross-sectional view showing an indoor unit of a conventional four-way outlet type ceiling cassette type air conditioner.

FIG. 10 is an exploded structural view showing an indoor unit of a conventional four-way outlet type ceiling cassette type air conditioner.

[Explanation of symbols]

 21 Ceiling Cassette Type Air Conditioner 21a Indoor Unit 22, 42 Housing 23 Drain Pan Integrated Panel 23a, 43 Ceiling Panel 23b Drain Pan 24, 44 Air Suction 25, 45 Air Blow 25a Louver 26 Round Indoor Heat Exchanger 27 Fan Motor 28 Turbofan 29 Drain pump 30 Insulation housing 30a Opening 31 Frame structure 31a Metal frame 31b Support frame 31c Blower mount 31d Suspended fixing part 32 Screw hole 41 Ceiling cassette type air conditioner 41a Indoor unit 43a Suction Panel 43b Opening 46 Louver 47 Filter 48 Electrical component box 49 Fixing screw 50 Electrical component mounting base 51 Long hole 52 Mounting screw 53 Assembly electrical component 53a Relay 53b Surge suppressor 53c Capacitor 53d Transformer 53e PC board 53f Head 54b flange portion of the terminal plate 54 volts 54a Bolt 55 Nut 56 insertion hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Wakana 336 Tatehara, Fuji City, Shizuoka Prefecture Toshiba Abu E Co., Ltd.

Claims (5)

[Claims] 1. An air blower is arranged in the center of the housing downwardly, and a heat exchanger is provided on the outer peripheral portion of the housing. In a ceiling cassette type air conditioner having an air outlet, a frame structure that is made of a metal member or the like and fixedly supports the blower and the heat exchanger in the housing, and is formed separately from the frame structure. In addition, the ceiling cassette type air conditioner is provided with a heat insulating casing made of a synthetic resin foaming body that partitions and covers the outer shell of the frame structure and forms a ventilation path inside. 2. The frame structure includes a pair of left and right metal frame bodies in which an upper step portion and a lower step portion extending outwardly before and after the upper step portion are bent and formed in a convex shape, and the left and right metal frames. It is composed of a blower mounting body which is disposed in the central portion between the bodies and supports the blower downward on the lower surface, and a support frame body which suspends and supports the blower mounting body on the upper stage portions of the left and right metal frame bodies. The characteristic ceiling cassette type air conditioner. 3. The frame structure is characterized in that a hanging member fixing portion to the ceiling portion is formed at a lower end portion of the metal frame body extending outward from the heat insulating casing. Claim 2
Ceiling cassette type air conditioner described. 4. An air blower and a heat exchanger are provided in the housing, an air suction port is provided in a central portion on the lower surface side of the housing, and an air outlet is provided outside thereof, and electric parts are arranged on the lower surface of the air suction port in the housing. A ceiling cassette type air conditioner provided with a ceiling panel provided with a suction panel that is provided and covers the lower surface of the housing, and faces the air suction port.
An ceiling cassette type air conditioner, characterized in that the ceiling cassette type air conditioner is arranged at a position facing the suction panel mounting part of the ceiling part, and the electric parts are mounted slidably in a horizontal direction. 5. The electric component is fixed to an electric component box via an electric component mounting base, and at least one of the electric component box and the electric mounting base is horizontally slidably mounted. The ceiling cassette type air conditioner according to claim 4.