JPH10197002A - Indoor machine of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the indoor machine of an air conditioner which can remove the fear of a user losing the spare suction grill, in the case that the spare suction grill is made an accessory. SOLUTION: This indoor machine is equipped with a first suction grill 18B consisting of a plane-shaped lattice frame and an air filter made integrally and attached capably of mounting to and removal from the front panel 19, a heat exchanger 3 having plate-shaped external form, a turbo fan 2 arranged with its rotary shaft in longitudinal direction, and a motor 4 to rotate the turbo fan 2, in order within a casing 1 having a frame-shaped front panel 19. This is provided with a storage 31 along the rear face 1b of this casing, in the rear of the casing. A second suction grill 18B as a spare suction grill is accommodated in this storage 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner for performing air conditioning in a room.

[0002]

2. Description of the Related Art Recently, in order to reduce the thickness of an indoor unit of an air conditioner in the front-rear direction, the applicant of the present application has installed a turbo fan in the casing of the indoor unit in the front-rear direction. The turbo fan is provided with a truncated-cone-shaped curved portion that curves to the front side in the center of the turbo fan, and a turbo fan rotation drive motor is disposed in a concave portion on the rear surface side of the curved portion. (Japanese Patent Application No. 8-277796) has been proposed in which a heat exchanger having a substantially rectangular plate-like outer shape is arranged on the front side.

In such an indoor unit of a turbofan type air conditioner, a flat lattice frame and an air filter are integrally formed inside a frame-shaped front panel in order to promote a reduction in thickness. Although it is desirable to provide an air filter integrated suction grille (hereinafter simply referred to as “suction grill”),
The design of this suction grill has a significant effect on the interior of the room.

[0004] Here, if only one kind of the suction grill is prepared for the indoor unit, it cannot be replaced even if the user is tired of the design of the suction grill. On the other hand, when a spare suction grill with a different design is sold as an accessory at the time of sale, if the user gets tired of the original design of the suction grill, it can be replaced with a spare suction grill. However, in this case, the user may lose the spare suction grill while using the original suction grill.

An object of the present invention is to provide an indoor unit of an air conditioner that can eliminate the risk of a user losing a spare suction grill when the spare suction grill is an accessory. is there.

[0006]

According to a first aspect of the present invention, there is provided an indoor unit for an air conditioner, comprising: a casing having a frame-shaped front panel; A first suction grille detachably attached to the front panel, a heat exchanger having a plate-like outer shape, a turbofan having a rotating shaft arranged in the front-rear direction, In an indoor unit of an air conditioner sequentially provided with a motor for rotating and driving a turbo fan, a housing portion is provided at a rear portion of the casing along a rear surface of the casing, and a second suction grill is housed in the housing portion. An indoor unit for an air conditioner, wherein

Here, the "first suction grill" corresponds to an original suction grill, and the "second suction grill" corresponds to a spare suction grill.

[0008] In the indoor unit of the air conditioner according to the first aspect,
Since the second suction grille is housed in the housing portion provided at the rear part of the casing, there is no possibility that the user loses the second suction grille, that is, the spare suction grille. Since the accommodation portion is provided along the rear surface of the casing, the thickness of the indoor unit in the front-rear direction hardly increases.

In this air conditioner indoor unit, while the user removes the first suction grille from the front panel and cleans the air filter section, the second suction grille may be attached to the front panel instead. Even if the indoor unit is operated, there is no danger that dust in the room will adhere to the exposed fins of the heat exchanger and clog it.

The indoor unit of the air conditioner according to claim 2 is
The indoor unit of an air conditioner according to claim 1, wherein the first and second suction grilles have different designs.

In the indoor unit of the air conditioner according to the second aspect,
Since the designs of the first and second suction grills are different from each other, if the user gets tired of the design of the first suction grill, the second suction grill can be attached to the front panel and used instead.

The indoor unit of the air conditioner according to claim 3 is
The indoor unit for an air conditioner according to claim 1 or 2, wherein an entrance of the housing portion is provided on a side surface of the casing.

[0013] In the indoor unit of the air conditioner according to the third aspect,
Since the entrance of the housing is provided on the side surface of the casing, the user can easily put the suction grill into and out of the housing even if the indoor unit is installed near the ceiling. In addition, dust in the room is less likely to accumulate in the accommodation portion than when the entrance of the accommodation portion is provided on the upper surface of the casing.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an indoor unit of an air conditioner according to the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 shows a front view of an indoor unit 10 of an air conditioner according to a first embodiment of the present invention, and FIG.
Indicates a place where the indoor unit 10 is viewed from the right side. FIG. 2B shows a cross section taken along line II-II in FIG.

In FIG. 1, reference numeral 1 denotes a rear surface 1b on the indoor wall.
A substantially square casing 2 to which the side is attached has a shaft 2 disposed substantially in the center of the casing 1 in the front-rear direction, and a turbo fan that blows out air sucked from the front side radially outward with respect to the shaft. 2 is a heat exchanger (a hatched portion shown in FIG. 1) arranged on the front side of the fan 2. A drain pan 5 for receiving drain water generated by dew condensation in the heat exchanger 3 is attached to a lower side of the heat exchanger 3, and drain water accumulated in the drain pan 5 is drained outside through a drain hose 8. FIG. 1 shows a state in which the front panel 19, the suction grill 18A and the casing front part 16 shown in FIG. 2 are removed for easy understanding.

The heat exchanger 3 has a thin rectangular plate shape using an all-aluminum meandering type or the like. A substantially square opening 3a is provided at the center of the heat exchanger 3, and a cover 7 is attached to the opening 3a.
However, the cover 7 may be omitted by eliminating the opening 3a of the heat exchanger 3.

As shown in FIG. 2A, a frame-shaped front panel 19 having a rectangular opening 19a is attached to the front of the casing 1. The front panel 19
Hook portion 1 that extends rearward from the periphery of the frame portion and is bent inward
9b, and the casing 1
It is detachably attached to the front part. In addition, engagement claws (not shown) for engaging the suction grille are provided at locations on the inner surface of the front panel 19 corresponding to upper and lower portions of the opening 19a. The first suction grille 1 is formed on the inner surface of the front panel 19 by the engagement claws so as to close the opening 19a.
8A is detachably attached. On the other hand, casing 1
A slit-shaped housing portion 31 having an inlet on the right side surface 1c of the casing is provided along the rear surface 1b of the casing at the rear portion, and the second suction grill 18B is housed in the housing portion 31. The housing 31 is provided on the rear surface 1 of the casing 1.
The thickness of the indoor unit 10 in the front-rear direction hardly increases because of the slit shape provided along b. As shown in FIG. 4, the first suction grill 18A is formed by integrally forming a plurality of lattices 42, a rectangular frame portion 40, and a flat air filter 41 extending in parallel to the left and right.
As shown in (2), the second suction grill 18B is formed by integrally forming a plurality of lattices 43 extending obliquely in parallel, a rectangular frame portion 40, and a flat air filter 41. Frame portions 4 of these first and second suction grills 18A, 18B
0, the user can use these suction grills 18A, 18A.
B are set to the same size so that they can be exchanged with each other.

As shown in FIG. 2B, the casing 1
Inside, an internal chassis 20 supporting the heat exchanger 3 is mounted. A circular hole 21 is formed substantially at the center of the internal chassis 20, and a curved portion 20a that curves toward the rear surface side is provided at an edge of the circular hole 21. In addition, the turbo fan 2
Has a substantially truncated cone-shaped curved portion 2a that is curved toward the front side, that is, toward the suction side, at the center. The motor 4 is arranged in a concave portion on the rear surface side of the curved portion 2a of the turbo fan 2, and the distal end side of the output shaft 17 of the motor 4 to which the turbo fan 2 is connected is rotatable by the motor fixing plate 6 shown in FIG. I support it. Also, four outlets 9 are provided on the side surface of the casing 1.
(One is shown in FIG. 2 (a) and only two are shown in FIG. 2 (b)), and flaps 11 to 14 (see FIG. 1) are attached to the air outlet 9 by hinges so as to be freely opened and closed. I have. In FIG. 2B, the motor fixing plate 6 and the cover 7 shown in FIG. 1 are omitted for easy viewing.

In the indoor unit 10 of the air conditioner, when the motor 4 is driven as shown in FIG. 2B, the turbo fan 2 rotates. As a result, the room air R passes through the opening 19a of the front panel 19 and the first suction grill 18A.
1 and R2 are sucked and exchanged in the process of passing through the heat exchanger 3. The heat-exchanged air R3, R4 passes through the circular hole 21 and flows along the curved surface of the curved portion 2a of the turbofan 2, and is blown radially outward by the turbofan 2 through the four outlets 9. At this time, the outlet 9
The flaps 11 to 14 (see FIG. 1) respectively control the wind directions of the air blown out from the four air outlets 9. The air blown up and down and left and right from the air outlet 9 of the indoor unit 10 flows and circulates along the wall surface, ceiling surface and floor surface so as to wrap around the room, eliminating a sense of draft and improving comfort. can do. It is also possible to completely close the outlet 9 in the direction in which the blowing air is not required, and to blow out only in the necessary direction.

As described above, the turbo fan 2 has an axial length shorter than the diameter of the impeller, and is provided with a truncated cone-shaped curved portion 2a which is curved toward the front side at the center of the turbo fan 2. The depth of the indoor unit 10 can be reduced to, for example, 100 mm or less by arranging the motor 4 in the concave portion on the rear surface side of the curved portion 2a and making the outer shape of the heat exchanger 3 thin. Further, since the heat exchanger 3 is provided with an opening 3a for eliminating interference with the motor 4, a part of the motor 4 overlaps the opening 3a, and the indoor unit 10
The overall depth can be further reduced. Therefore, the interior of the room can be improved.

The cover 7 that covers the opening 3a of the heat exchanger 3 eliminates the bypass flow of the air passing through the opening 3a of the heat exchanger 3 so that the air that is not heat-exchanged is not sucked as it is. A decrease in the heat exchange efficiency of the heat exchanger 3 can be prevented.

As shown in FIG. 3, when the indoor unit 10 of the air conditioner is installed on an indoor wall surface (not shown), the second suction grill 18B is housed in the housing 31 at the rear of the casing. By doing so, it is possible to eliminate the risk of the user losing the second suction grill 18B, that is, the spare suction grill. In addition, while the user removes the first suction grill 18A from the front panel 19 and cleans the air filter unit 41, instead of attaching the second suction grill 18B to the front panel 19, the indoor unit 10 is operated temporarily. Even if it does, the exposed heat exchanger 3
It is possible to eliminate the possibility that dust in the room adheres to the fins and the fins are clogged.

The first and second suction grills 1
Since the designs of 8A and 18B are different from each other, if the user gets tired of the design of the first suction grill 18A, the second suction grill 18B can be attached to the front panel 19 and used instead.

The casing 1 has a substantially square shape, and accordingly the front panel 19 and the suction grills 18A, 18B
Is rectangular, but the shapes of the casing, front panel, and suction grille are not limited thereto, and may be polygonal or the like.

Although the entrance of the housing 31 is provided on the right side 1c, it may be provided on the left side. In addition, the accommodation section 31
The rear portion of the casing 1 may be formed as a through slit penetrating left and right along the rear surface 1b of the casing. In any case, when the entrance of the storage unit 31 is provided on the side surface of the casing 1,
Even if this indoor unit 10 is installed near the ceiling,
The user holds the suction grille 18A, 1
8B can be easily taken in and out. In addition, compared to the case where the entrance of the storage unit is provided on the upper surface of the casing 1, dust in the room is less likely to accumulate in the storage unit 31.

[0027]

As is apparent from the above description, in the indoor unit of the air conditioner according to the first aspect, since the second suction grille is housed in the housing portion provided at the rear portion of the casing, the user can use the second suction grille. The possibility of losing the second suction grille, ie, the spare suction grille, can be eliminated.

In the air conditioner indoor unit, while the user removes the first suction grille from the front panel and cleans the air filter section, the second suction grille may be attached to the front panel instead. Even if the indoor unit is operated, there is no danger that dust in the room will adhere to the exposed fins of the heat exchanger and clog it.

In the indoor unit of the air conditioner of the second aspect, since the designs of the first and second suction grills are different from each other, if the user gets tired of the design of the first suction grille, the second suction grille is used instead. A grill can be attached to the front panel for use.

In the indoor unit of the air conditioner according to the third aspect, the entrance of the housing is provided on the side surface of the casing. Therefore, even if the indoor unit is installed near the ceiling, the user can use the housing. The suction grille can be easily taken in and out of the suction grille. In addition, dust in the room is less likely to accumulate in the accommodation portion than when the entrance of the accommodation portion is provided on the upper surface of the casing.

[Brief description of the drawings]

FIG. 1 is a front view of an indoor unit of an air conditioner according to an embodiment of the present invention.

FIG. 2A is a diagram showing the indoor unit of FIG. 1 as viewed from the right side, and FIG. 2B is a cross-sectional view taken along line II-II in FIG.

FIG. 3 is a view showing a state in which a spare suction grille is housed in a housing part when the indoor unit is installed.

FIG. 4 is a diagram showing a design of a first suction grill.

FIG. 5 is a diagram showing a design of a second suction grille.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Casing 2 Turbo fan 3 Heat exchanger 4 Motor 10 Indoor unit 11, ..., 1
4 Flap 18A First suction grill 18B Second
Suction grille 19 front panel 31 housing

Claims (3)

[Claims] 1. A planar grid frame (40, 42; 4) is provided in a casing (1) having a frame-shaped front panel (19).
0, 43) and an air filter (41) are integrally formed, a first suction grill (18A) detachably attached to the front panel (19), and a heat exchange having a plate-like outer shape. An indoor unit of an air conditioner, which comprises in order a unit (3), a turbo fan (2) having a rotating shaft arranged in the front-rear direction, and a motor (4) for rotating the turbo fan (2). At the rear of the casing (1), this casing (1)
An accommodation unit (31) is provided along the rear surface (1b), and a second suction grill (18B) is accommodated in the accommodation unit (31). 2. The air conditioner indoor unit according to claim 1, wherein the first and second suction grilles (18A, 18B) have different designs. 3. The indoor unit of an air conditioner according to claim 1, wherein an inlet of the housing portion (31) is provided on a side surface (1c) of the casing (1). Indoor unit of air conditioner.