JP3173938B2 - Indoor unit of air conditioner - Google Patents

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 a separate type air conditioner, and more particularly to a built-in type indoor unit which is installed buried in a wall surface of a room.

[0002]

2. Description of the Related Art As a separate type air conditioner, there is a built-in type air conditioner in which an indoor unit is installed buried in a wall surface of a room. Among the built-in type indoor units, there are those which are conventionally attached to the wall surface near the ceiling and have the configuration shown in FIG.

[0003] In the figure, 1 is a wall surface in a room, and 2 is a ceiling. A storage hole 4 for storing the indoor unit 3 is formed in the wall surface 1. An installation frame 5 is fixed in the storage hole 4.
And is installed in the installation frame 5.

The indoor unit 3 has a main body 6 fixed in the installation frame 4. A space is defined between the upper surface of the main body 6 and the upper wall of the installation frame 5, and this space houses an auxiliary pipe 7 for connecting the indoor unit 3 to an outdoor unit (not shown). Storage space 8
It has become.

The front surface of the inside of the main body 6 on the indoor side is vertically divided by a drain pan 9 shown in FIG. 1, and a halfway portion in the height direction is bent above the drain pan 9 in a substantially rectangular shape. Heat exchanger 10 is provided.

Then, on the back side of the heat exchanger 10,
A cross flow fan 11 is provided, and a guide for guiding the air circulated by the cross flow fan 11 from the upper front side to the lower front side in the main body 6 is provided on the back side of the cross flow fan 11. A fan casing 12 having a surface 12a is provided.

On the front side of the main body 6, a front grill 15 for covering the front of the main body 6 and the auxiliary pipe storage space 8 is detachably attached.
A suction port 15a is provided in a portion of the front grill 15 corresponding to the upper side of the drain pan 9, and an outlet 15b is provided in a portion corresponding to a lower side of the drain pan 9.

In the ventilation passage facing the outlet 15b, there are provided left and right louvers for swinging right and left for adjusting the direction of the blown air. An upper and lower lever that swings up and down is provided.

On the back of the front grill 15,
A stepping motor (not shown) for driving the left and right louvers 17 and the upper and lower louvers 18 is attached.

To mount the indoor unit 3 having such a configuration on a wall surface, first, the main body 6 is installed in an installation frame 5 provided in the storage hole 4. Then, after pulling out the auxiliary pipe 7 to the indoor side and performing pipe work,
Push it into the storage space 8 again. Then, the front grill 15 is attached to the main body 6.

When the front grille 15 is attached to the main body 6, it is extended from a drive motor (not shown) for driving the upper and lower louvers 18 attached to the front grille 15. A connector (not shown) is attached to the main body 6 while being connected to an electric component box (not shown).

[0012]

The conventional built-in type indoor unit has the following problems to be solved. First, the pipe connection between the indoor unit and the outdoor unit needs to be performed after the main body 6 is installed at a predetermined place in order to determine the length of the pipe. Therefore, in order to connect the auxiliary pipe 7 of the built-in type indoor unit 3, it is necessary to perform connection after installing the indoor unit in the storage hole 4.

In addition, since the built-in type indoor unit 3 needs a structure that does not expose the auxiliary pipe 7 to the indoor side, the conventional built-in type indoor unit 3 requires the main unit 6 as described above. A dedicated auxiliary pipe storage space 8 is provided on the upper side (or lower side), and the auxiliary pipe 7 is pushed into the space 8 and stored.

However, in such a structure, the height of the storage hole 4 and the front grill 15 may be increased. For this reason, depending on the place (for example, top bag) to be installed, there is a case where the space cannot be installed.

On the other hand, if the storage space 8 is made small in order to make the height of the storage hole 4 and the front grill 15 as low as possible, there is a problem that piping work becomes very difficult. In this case, if the auxiliary pipe 7 is forcibly pushed into the storage space 8, the main body 6 or the auxiliary pipe 7 itself may be damaged.

Second, as described above, in the above configuration, when the front grille 15 is attached and detached, it is necessary to attach and detach the connector extended from the front grille 15 side to the electric component box of the main body 6 at the same time. Was.

That is, when this operation is performed by one person, the connector must be attached and detached while holding the front grille 15 with one hand, so that the workability may be extremely poor. In addition, when there are a plurality of the connectors, there is a risk of making a mistake.

The present invention has been made in view of such circumstances, and has as its object to provide an indoor unit of an air conditioner that has good installation workability, is compact, and has a high degree of freedom in installation. .

[0019]

According to a first aspect of the present invention, there is provided a main body having a front surface exposed to the inside of a room and buried in a wall.
A front grille having an inlet at an upper portion and an outlet at a lower portion, and detachably attached to a front surface of the main body, a heat exchanger disposed at an upper portion in the main body, and a midway in a height direction of the main body And a drain pan that receives drain from the heat exchanger, and introduces indoor air sucked from the suction port of the front grill into the heat exchanger, and removes air exchanged by the heat exchanger. A fan that blows air to a lower portion of the main body, and a fan case that is provided on the back side of the main body and forms a guide surface that guides the heat exchanged air blown to the lower portion of the main body to an outlet of the front grille. And a detachable portion which is detachably provided at a lower portion corresponding to the outlet of the front grille of the fan casing and which constitutes the guide surface together with the fan casing when attached, and extends from the main body. Be Both of which it is an indoor unit of an air conditioner characterized by comprising the auxiliary pipe accommodated in the back side of the detachable portion.

According to a second aspect, in the indoor unit of the air conditioner of the first aspect, a drain pan cover for covering a lower surface of the drain pan is integrally provided in the detachable portion. Things.

A third means is the indoor unit of the air conditioner of the first means, wherein the attaching / detaching portion is fixed to a lower portion of the front grill, and is attached to / detached from the main body together with the front grill. Is what you do.

The fourth means has a heat exchanger, a blower fan and a control unit for controlling the air conditioner inside, a front body exposed to the indoor side and buried in the wall, and a suction unit in the upper part. A front grille having a mouth and an outlet at a lower portion, detachably attached to the front surface of the main body, and a front surface extended from an electric component such as a louver drive motor provided on the front grille; In an indoor unit of a heat exchanger having a grill side connector and a main body side connector provided in a control unit of the main body and connected to the grill side connector to supply electric components provided to the front grille. The grill side connector and the main body side connector are
An air conditioner for an indoor unit, wherein the main unit and the front grille are respectively fixed at positions facing each other when the front grille is attached to the main unit.

[0023]

According to the first means, it is possible to perform the piping work of the auxiliary pipe by removing the detachable portion, and by attaching the detachable portion to the fan casing, the auxiliary work is provided on the back side of the detachable portion. Piping can be stored.

According to the second means, the drain pan can be prevented from dew condensation by the don pan cover, and the drain pan cover can be removed integrally with the attaching / detaching portion, so that the auxiliary pipe can be easily pulled out. Become.

According to the third means, by attaching / detaching the front grill, the attaching / detaching portion can be attached / detached to / from the fan casing. According to the fourth means, by attaching / detaching the front grill to / from the main body, it becomes possible to simultaneously attach / detach the front grill-side connector and the main body-side connector.

[0026]

An embodiment of the present invention will be described below with reference to the drawings. Note that the same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. In the figure, 1 is a wall surface in a room, and 2 is a ceiling. A storage hole 18 having a size smaller than that of the conventional example is opened in the wall surface 1.

An installation frame 19 shown in FIG. 1 is fixed in the storage hole 18, and the indoor unit 20 of the present invention is installed in the installation frame 19. The indoor unit 20 includes a main body 21 fixed to the installation frame 19, a suction port 22 a attached to a front side of the main body 21 on the indoor side and formed at an upper portion, and an air outlet 22 formed at a lower portion.
b.

The inside of the main body 21 is vertically divided by a drain pan 23 shown in FIG. And the main body 2
1, a space above the drain pan 23 corresponds to the suction port 22a of the front grill 22 and the drain pan 23
The lower space corresponds to the outlet 22b of the front grill 22.

The drain pan 2 in the main body 21
3, a heat exchanger 25 is provided.
On the back side of 5, a cross flow fan 26 is rotatably provided in a direction indicated by an arrow in the drawing by a motor (not shown) provided on the main body 21.

On the back side of the main body 21, air that has passed through the heat exchanger 25 and has been subjected to heat exchange is filled with air.
, That is, a fan casing 27 having a guide surface 27a for guiding the drain pan 23 below the drain pan 23.

The lower part of the fan casing 27 is shown in FIG.
As shown in the figure, the main body 21 can be detached. Hereinafter, a lower portion of the removable fan casing 27 is referred to as a detachable portion 28.

The detachable portion 28 can be detached from the main body 21 together with the front grill in FIG. 2, but can also be detached from the front grill 22 as shown in FIG. .

Therefore, the attaching / detaching portion 28 is attached to the front grill 22.
, And can be removed from the main body together with the front grill at the time of piping work at the time of installation, or the detachable portion 28 can be attached to the main body 21 so that only the front grill 22 can be removed from the main body 21 at the time of maintenance after installation. I have.

The attachment / detachment portion 28 includes a guide plate 29 which forms a guide surface 27 a together with the fan casing 27, and a drain pan which is provided above the guide plate 29 and defines a blowing passage 30 between the guide plate 29 and the guide plate 29. And a cover 31.

The drain pan cover 31 covers the lower surface of the drain pan 23 when the detachable portion 28 is assembled in the main body 21 as shown in FIG. The drain pan cover 31 has a role of preventing blown air from directly contacting the lower surface of the drain pan 23 and preventing dew condensation on the lower surface of the drain pan 23 during cooling.

The guide plate 29 of the attaching / detaching portion 28 includes
A left and right louver 33 that stands upright in the outlet passage 30 and that can swing right and left is held. The drive mechanism 34 of the left and right louvers 33 is fixed to one end surface in the width direction of the attaching / detaching portion 28 as shown in FIG. 4. Also, as shown in FIG. An auxiliary pipe 35 of this indoor unit is led out. The auxiliary pipe 35 is a pipe for connecting the indoor unit to an outdoor unit (not shown). When the detachable portion 28 is detached from the main body 21 as shown in FIG. As shown by an arrow (a), a pipe connection operation can be performed by pulling out from a portion opened to the lower side of the vehicle.

When the attaching / detaching portion 28 is attached to the main body 21, as shown in FIG.
8 (the storage space)
S).

At one end of the main body 21 in the width direction,
As shown in FIGS. 4 and 5, an electric component box (control unit) 37 for controlling the indoor unit 20 is provided. A portion of the electric component box 37 exposed to the front of the main body 21 is provided with a motor provided on the front grill.
A recess 37a into which a case (to be described later) is inserted is provided. The recess 37a is connected to a front grill-side connector (to be described later) provided in the motor case of the front grill 22. The main body side connector 38 is provided.

Next, the front grill 22 will be described. As shown in FIG. 3, an outlet 22b provided at a lower portion of the front grill 22 is provided with an upper and lower louver 39 which can swing vertically. This rocking rule
As shown in FIG. 4, the bar 39 is formed by a motor 41 (corresponding to an electric component of the present invention) housed in a motor case 40 fixed to the back surface of one end in the width direction of the front grill 22. It is configured to be driven to swing vertically.

The reel extended from the motor 41
The lead wire 42 and the front grille side connector 43 attached to the end of the lead wire 42 are connected to the motor case 40.
Of the connector 43
In FIG. 4 with its connection part facing the main body 21 side.
The motor case 40 is fixed to the motor case 40 by a fixing member 4.

On the other hand, the front grill 22 is provided with a display section for various information and a light receiving section of a remote controller at a position indicated by 45 in FIG. The front grille side connector 43 extending from the display unit and the light receiving unit is similarly fixed to the motor case 40 by the fixing tool 44.

Although not shown, a connector for connecting a lead wire derived from a driving mechanism 34 of the left and right louvers 33 provided on the attaching / detaching portion 28 to the front grill 22 and a connector for connecting the lead wire to the front grill 22 are provided. The front grille side connector 43 is also fixed at the same position.

The front grille side connector 43 and the main body side connector 38 are positioned and connected to each other when the front grille 22 is attached to the main body 21.

That is, as shown in FIG. 4, the position where the front grille side connector 43 is fixed corresponds to the position where the main body side connector 38 provided on the main body is provided. Also, the main body side connector 3
8 has a stepped portion 38a that fits with the outer shape of the fixture 44 of the front-side connector 43 and that accurately positions the body-side connector 38 and the front grille-side connector 43.

Next, the installation of the indoor unit will be described. First, as shown in FIG. 5, the main body 21 is held by both hands, inserted into the storage hole 18 opened in the wall surface 1, and fixed to the installation frame 18 as shown in FIGS. Next, the auxiliary pipe 33 extending to the lower part of the main body 21 was pulled out to the front side of the main body 21, and this auxiliary pipe 33 was connected to the pipe extending from an outdoor unit (not shown), and a heat insulating material and the like were wound. Thereafter, the main body 21 is pushed again.

After the connection of the auxiliary pipe 33 is completed, the front grill 22 and the attaching / detaching portion 28 are mounted on the main body 21. For this purpose, first, the detachable portion 28 is fixed to the back surface of the front grill 22. As shown in FIG.
This is performed by abutting the outlet passages 30 provided on the front side 8 with the outlets of the front grill 22 and connecting them with each other using, for example, screws.

Next, the detachable portion 28 and the front grill 22
Are assembled integrally with the main body 21. As shown in FIG. 4, the front grille 22 is first roughly aligned with the main body 21, and the fixing member 44 of the front grille side connector 43 is engaged with the step 38a of the main body side connector 38, as shown in FIG. Combine. Next, as shown in FIG. 2, the front grill 22 and the main body 21 are fixed with, for example, screws.

As a result, as shown in FIG. 1, the guide plate 29 of the attaching / detaching portion 28 is fitted into the lower portion of the fan casing 27, and forms a guide surface 27a for blowing air together with the fan casing 27. Further, by this, the auxiliary pipe 33 is stored on the back surface of the guide plate 29.

The lower side of the drain pan 23 is covered with a drain pan cover 31 provided in the attaching / detaching portion 28, and the dew condensation on the lower surface of the drain pan 23 is prevented. Further, the front grille side connector 43 is accurately coupled to the main body side connector 38 by the guide between the fixing tool 44 and the step 38a of the main body side connector 38.

Therefore, the main body 21 can be operated by operating the remote control toward the light receiving portion provided on the front grille, and the front grille can be operated via the electric component box 37 provided on the main body. Each mechanism (the left and right louvers 33 and the upper and lower louvers 39) provided on the 22 can also be operated.

The upper and lower louvers may be operated in accordance with the operation pattern under the control of the electric component box. For example, the upper and lower louvers may be controlled so as to be closed when the operation is stopped, horizontal during the cooling operation, and obliquely downward during the heating operation.

When it is necessary to remove the front grill 22 during maintenance, the operator removes the bolts for fixing the front grill 22 and the main body 21 and also holds the front grill 22 with both hands. It is only necessary to support and remove from the main body 21. As a result, the attaching / detaching portion 28 is integrally formed with the front grill 22 with the main body 21.
And the front grille side connector 43 and the main body side connector 38 are simultaneously separated.

According to such a configuration, the following effects can be obtained. First, since there is no need to provide a storage space for storing the auxiliary pipe 33 in the gap between the main body 21 and the installation frame 19, the height of the main body 21 and the front grill 22 can be reduced.

That is, according to the present invention, the fan case
The lower portion of the shing 27 is a detachable attachment / detachment portion 28, and an auxiliary pipe 33 is accommodated on the back side of the guide plate 29 of the attachment / detachment portion 28. This eliminates the need to provide a special storage space above or below the main body 21, so that the height of the storage hole 18 and the front grill 22 can be reduced.

Therefore, there is an effect that the indoor unit 20 can be installed even in a place where the installation space is small, such as a wall near the ceiling.
In addition, a sufficient space for storing the auxiliary pipe 33 can be ensured, and the auxiliary pipe is stored in the lower part of the main body.

The attachment / detachment portion 28 is provided on the front grill 2
Since it is configured to be detachably attached to the unit 2, there is also an effect that the working process at the time of installation or maintenance is simplified.

Second, when the front grill 22 is mounted on the main body 21, the front grill 22 is simply attached to the main body 21 so that the connectors 43 and 38 provided on both sides are positioned and connected. Therefore, there is an effect that the work of installing the indoor unit 20 is simplified for the worker.

In addition, even when there are a plurality of connectors, there is also an effect that it is less likely that each of the connectors is checked or erroneously inserted. Third, in the present invention, the drain pan cover 31 is formed integrally with the attaching / detaching portion 28. Conventionally, a heat insulating material or the like has been attached to prevent condensation from forming on the lower surface of the drain pan 23. However, since this heat insulating material also requires a considerable thickness, it is expected that in a configuration like the present invention, it will be an obstacle to push the auxiliary pipe 33 from below the drain pan 23.

Therefore, in the present invention, the drain pan 2
A drain pan cover 31 for preventing dew condensation is provided, and the drain pan cover 31 is formed integrally with the attaching / detaching portion 28 so that it can be removed from the main body together with the front grille during piping work.

This eliminates the need for attaching a heat insulating material to the lower surface of the drain pan 23 and eliminates the drain pan cover serving as the heat insulating material from below the drain pan 23 during piping work. The space below the drain pan 23 can be widened, and the auxiliary pipe 33 can be easily pulled out and pushed in. This has the effect of simplifying the work of installing the indoor unit 20.

Further, it is not necessary to perform an operation step of attaching a heat insulating material to the lower surface of the drain pan 23 by using an adhesive or the like as in the related art, and the manufacturing process can be simplified. In the above embodiment, the attachment / detachment portion 28 is attached to the front grill 22 and then attached to the main body 21. However, the attachment / detachment portion 28 is attached to the main body 21 in advance, and then the front grill 22 is attached to the main body. Is also good.

According to such a configuration, there is an effect that the maintenance can be easily performed only by removing the front grille 22 without removing the attaching / detaching portion at the time of the maintenance of only the electric parts without the piping work.

[0063]

As described above, the present invention is, firstly, in a state where it is attached to a lower portion of a fan casing which constitutes a guide surface for guiding air blown into a room to an outlet of a front grille. An indoor unit of an air conditioner in which an attaching / detaching portion constituting the guide surface is detachably provided together with the fan casing, and an auxiliary pipe is housed in a main body on the back side of the attaching / detaching portion.

Second, in the first configuration, a drain pan cover for covering the lower surface of the drain pan is provided on the attaching / detaching portion.
Are provided integrally. Thirdly, in the first configuration, the attaching / detaching portion is fixed to a lower portion of the front grill, and is attached to / detached from the main body together with the front grill.

Fourthly, a front grille-side connector extending from an electric component such as a louver drive motor provided on the front grille, and a control unit of the main body are connected to the grille-side connector. By connecting the main body side connector for supplying electric components provided on the front grille to the main body and the front grille, the air conditioner is fixed at a position facing each other when the front grille is attached to the main body. It is an indoor unit of the machine.

According to such a configuration, there is no need to particularly provide a space for accommodating the auxiliary piping on the upper or lower side of the main body. Therefore, the height of the indoor unit can be reduced, and the installation of the indoor unit is correspondingly free. This has the effect of improving the degree.

Further, by providing the drain pan cover integrally with the attachment / detachment part, it is possible to effectively prevent the condensation of the drain pan and to remove the drain pan together with the attachment / detachment part. Never be.

Further, when attaching the front grill to the main body,
By simply attaching the front grille to the main body, the connectors provided on both sides are positioned and connected to each other, so that the work of installing the indoor unit is simplified.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a schematic longitudinal sectional view showing attachment of a front grille to the main body.

FIG. 3 is a schematic vertical sectional view showing attachment of a detachable portion to the front grill.

FIG. 4 is a side view having a partial cross section showing the connection between the connector provided on the main body and the connector provided on the front grille.

FIG. 5 is a perspective view showing installation of a main body and a front grille on an installation frame.

FIG. 6 is a schematic longitudinal sectional view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wall surface, 2 ... Ceiling, 20 ... Indoor unit, 21 ... Main body, 22 ... Front grille, 22a ... Inlet, 22b ... Outlet, 23 ... Drain pan, 25 ... Heat exchanger, 26 ... Cross flow fan, 27 ... Funke -Thing, 27a ... guide surface, 28
... Removable part, 29 ... Guide board, 31 ... Drain pan cover, 3
3 ... Auxiliary piping, 37 ... Electrical component box, 38 ... Main body side connector, 41 ... Lovers driving motor (electrical component), 43 ... Front grill side connector.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsukasa Sasaki 336 Tatehara, Fuji-shi, Shizuoka Pref. Toshiba Fuji Plant (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 13/32 F24F 1 / 00 401 F16M 13/02

Claims (4)

(57) [Claims] 1. A main body buried in a wall with a front surface exposed to the interior of a room, a front grille having a suction port at an upper part and an air outlet at a lower part and detachably attached to a front surface of the main body, A heat exchanger disposed at an upper part in the main body, a drain pan disposed midway in a height direction of the main body and receiving drain from the heat exchanger, and indoor air sucked from a suction port of the front grille Into the heat exchanger, and a fan for blowing air exchanged by the heat exchanger to the lower part in the main body. A fan casing which constitutes a guide surface for guiding the blown air to the outlet of the front grill; and a fan casing which is detachably provided at a lower portion corresponding to the outlet of the front grill of the fan casing and is attached to the fan casing. Then this funk An indoor unit for an air conditioner, comprising: an attaching / detaching portion that forms the guide surface together with a ring; and an auxiliary pipe extending from the main body and housed on a back side of the attaching / detaching portion. 2. The indoor unit of an air conditioner according to claim 1, wherein a drain pan cover for covering a lower surface of the drain pan is provided integrally with the detachable portion. 3. The indoor unit of an air conditioner according to claim 1, wherein the attaching / detaching portion is fixed to a lower portion of the front grill, and is attached to / detached from the main body together with the front grill. 4. A heat exchanger, a blower fan, and a control unit for controlling the air conditioner, a main body buried in a wall with a front surface exposed to the indoor side, a suction port in an upper part and a lower part in a lower part. A front grille having an air outlet and detachably attached to a front surface of the main body; a front grille-side connector extending from an electric component provided on the front grille; and a control unit of the main body. An indoor unit of a heat exchanger having a main body side connector for supplying electric components provided on the front grille by being connected to the grill side connector, wherein the grill side connector and the main body side connector are: The indoor unit is characterized in that the main unit and the front grill are fixed at positions facing each other when the front grill is attached to the main unit. Conditioner.