JPH07208757A - Indoor unit of air conditioner - Google Patents

Abstract

PURPOSE:To reduce the number of component parts, facilitate an assembling work, perform a positive processing of drain water and increase rigidity of the main body of an indoor unit even under a configuration in which a plurality of drain pans must be installed. CONSTITUTION:A main body 20 of an air conditioner is comprised of a easing, a blower 50 and a heat exchanger 56 surrounding the blower are stored and installed within the main body of the device. A front surface and an upper surface of the main body of the device opposing against the heat exchanger 56 are provided with suction ports 25a, 25b. The main body of the device is provided with each of a rearward drain pan 55 at a location opposing against the upper suction port and a forward drain pan 57 at a location opposing against a forward suction port in an integral manner acting as drain pans for collecting drain water generated at the heat exchanger.

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, and more particularly to improvement of a unit body.

[0002]

2. Description of the Related Art A commonly used air conditioner comprises an indoor unit installed in an air-conditioned room and an outdoor unit installed outdoors in a building connected via a refrigerant pipe or the like. The unit body of the indoor unit is often of the type that is attached and fixed to the wall surface of the air-conditioned room.

As shown in FIG. 6, in the indoor unit, a unit body 3 is formed by combining a front panel 1 and a rear plate 2, and a heat exchanger 4 and a heat exchanger 4 are formed inside the unit body.
The blower 5 is housed and arranged.

As a recent tendency, as shown in the figure, the heat exchanger 4 is divided into a plurality of parts, and the blower 5 consisting of a cross flow fan is encircled except for the rear plate side. That is, the front panel 1 and the front panel 1 face each other in a state of being bent and formed.

The front panel 1 is provided with suction ports (not shown) on the front and upper surfaces so as to face the heat exchanger 4. An outlet 6 is formed at the lower part of the front surface together with the end of the rear plate 2.

The rear plate 2 is bent along the blower 5 at the central portion in the vertical direction, and an outlet vent passage 7 communicating with the outlet 6 is formed on the lower side. Then, this lowermost end is bent rearward to form a pipe housing cover 8 for shielding the pipes located on the back side thereof.

[0007]

By performing a refrigerating cycle operation on the heat exchanger 4, a cooling action or a heating action can be obtained. However, particularly during cooling, the temperature of the heat exchanger surface drops below the dew point, It is well known that the water contained in the air in the air-conditioned room introduced here is condensed to generate so-called drain water.

The drain water flows down along the surface of the heat exchanger 4 and is collected in the front and rear drain pans 10a and 10b provided so as to face the lower end portion. These drain pans 10
A drain hose is connected to a and 10b, and the collected drain water is immediately discharged to the outside of the room.

As described above, the front and rear drain pans 10a and 10b are functionally free from problems, but there are many problems in terms of their construction and assembling work. That is, in the case of the conventional flat plate-shaped heat exchanger, it is sufficient to dispose one drain pan at the lower end thereof, but in the case of the heat exchanger 4 bent into a plurality of parts as described above. Must have a front drain pan 10a facing the front lower end and a rear drain pan 10b facing the rear lower end, respectively.

Naturally, the front drain pan 10a and the rear drain pan 10b have extremely different height positions, and the heat exchanger 4 is mounted in an inclined state depending on the bending state of the heat exchanger 4.

The rear drain pan 10b is provided integrally with the rear plate 2. However, since the front drain pan 10a is prepared as a separate component for both the front panel 1 and the rear plate 2, the number of components is large and the cost is adversely affected. Drain pan 1
The assembly work of 0a is extremely troublesome and the assembly cost is high.

Further, when the front drain pan 10a is a separate component, the front drain pan 10a does not contribute to improving the rigidity of the unit body 3 and the drain water from the rear drain pan 10b is drained to the front drain pan 10a by a gutter or the like. There were problems such as a step easily occurring at the mounting portion and the flow of drain water was uncertain.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a plurality of drain pans such as heat exchangers that are bent at a large number of parts. It is an object of the present invention to provide an indoor unit for an air conditioner that can reduce the number of parts, facilitate assembly work, reliably process drain water, and enable effective parts.

[0014]

In order to satisfy the above-mentioned object, an indoor unit of an air conditioner according to claim 1 is a unit main body composed of a housing, and a fan is provided inside the unit main body and a heat is provided so as to surround the blower. In an indoor unit of an air conditioner, in which an exchanger is housed and arranged, and an upper surface and a front surface of a unit body facing the heat exchanger are provided with an inlet, a drain generated by the heat exchanger is provided in the unit body. As a drain pan for collecting water, a rear drain pan is integrally provided at a portion facing the upper suction port, and a front drain pan is integrally provided at a portion facing the front suction port.

The indoor unit of the air conditioner according to claim 2 is
A drain gutter for flowing the drain water collected by the rear drain pan to the front drain pan is provided at the connecting portion that connects the unit body of the first aspect and the front drain pan.

The indoor unit of the air conditioner according to claim 3 is
The drain gutter according to claim 2 is located inside the blowout passage of the heat exchange air, which is composed of the unit body and the front drain pan.

The indoor unit of the air conditioner according to claim 4 comprises:
In the vicinity of the drain gutter located inside the ventilation passage of claim 3,
Ribs are provided that are curved along the fan shape of the blower.

The indoor unit of the air conditioner according to claim 5 is
A support portion that supports the heat exchanger is formed at a connection portion that connects the unit body of claim 1 and the front drain pan.

The indoor unit of the air conditioner according to claim 6 comprises:
The front drain pan according to claim 1 is integrally provided with a nose portion for guiding the heat exchange air blown from the blower.

[0020]

[Function] A rear drain pan for collecting drain water of the heat exchanger facing the upper suction port provided in the unit body and a front drain pan for collecting drain water of the heat exchanger facing the front suction port are respectively provided in the unit. Provided integrally with the main body.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the assembled indoor unit of the air conditioner, and FIGS. 2 and 3 show the indoor unit in a disassembled state.

The unit body 20 is composed of an assembly of a front panel 21 and a rear plate 22. Front panel 2 above
1 includes both side plate portions 23, 23 that are closed, and these side plate portions are integrally connected by a plurality of crosspiece portions 24 ....

The crosspieces 24 are located at the upper rear part, the upper front part, the lower front part and the lower rear part of the side plate part 23, and the mutual spaces of these crosspieces are the upper suction port 25a and the front suction part. It will be formed as the opening 25b and the outlet 26.

The upper suction port 25a of the front panel 21
A suction grill 27 is attached to the front side facing the front suction port 25b. A filter 28 is removably inserted on the back side of the grill along the suction grill 27 and on the front side of the front panel 21. That is, the filter 28 is the suction port 2 provided on the front panel 21.
It is detachable with respect to 5a and 25b.

A part of the front panel 21 is extended as it is to form both sides of the blowout port 26 and a portion along the lower end edge thereof to form an airflow passage forming portion 30 constituting a blowout port ventilation passage 29.

The ventilation passage forming portion 30 of the front panel 21 and the lower end surface portion integrally extending from the end portion of the outlet 26 to the rear surface constitute a pipe housing cover 31. The auxiliary pipe 32, the drain hose 33, and the like are housed in the pipe housing cover 31.

A claw portion 34 is provided at the tip of the pipe storage cover 31.
Are provided integrally. The claw portion 34 is the unit body 2
When 0 is installed on the wall surface K of the air-conditioned room, it is locked in the locking holes 36 of the installation plate 35 which is previously mounted and fixed to the wall surface.

A locking piece 37 is provided on the upper end of the installation plate 35.
Is formed, and the locking portion 38 provided on the rear plate 22 is locked to the locking piece 37. On the other hand, an airflow direction adjusting unit 40 is provided at a position facing the outlet ventilation passage 29 of the ventilation passage forming unit 30. The wind direction adjusting unit 40 is provided in the ventilation passage forming unit 30.
It is composed of a plurality of left and right louvers 41 which are directly provided on the upper part with a predetermined interval, and an upper and lower louvers 43 which are pivotally supported by a support plate 44 which is erected at substantially the center of these left and right louvers.

As shown in FIG. 4, connecting portions 51, 51 are provided at both end portions of the rear plate 22 to support the blower 50. The blower 50 pivotally supports a drive motor 52 supported by a connecting portion 51 on one side, a cross-flow fan 53 connected to a rotation shaft of the drive motor, and a shaft portion on the other end side of the cross-flow fan. And a bearing 54 attached to the side connecting portion 51.

A rear drain pan 55 is integrally provided on the upper portion of the rear plate 22 along the width direction. The rear drain pan 55 is provided in a state of being obliquely inclined forward and supports a lower end portion on the back surface side of a heat exchanger 56 described later.

That is, in the heat exchanger 56, a large number of fins are arranged side by side with a narrow gap, and the heat exchange pipes pass through the fins and are adjacent to each other at both ends of the fins. Connect with U bend part,
This is a so-called find tube type that forms a meandering coolant conducting portion.

Then, in this forming, a cut is made at a predetermined position (here, three places) on one side of each fin, and after the heat exchange pipe is fixed through, a bending force is applied at the cut. The formed heat exchanger 56 is vertically divided into four parts with the bent part deformed from the cut part as a boundary,
The bent state is maintained by the end plates provided at the side ends of the heat exchanger 56.

With the lower end portion of the heat exchanger 56 on the rear surface side being arranged on the rear drain pan 55, the blower 5 will be described.
The cross flow fan 53 of 0 is bent except for the air outlet ventilation passage 29. Further, the heat exchanger 56 is located at a portion facing the upper suction port 25a and the front suction port 25b provided on the front panel 21. The lower end of the heat exchanger 56 on the front surface side is supported by a front drain pan 57 described later.

Further, the end plates provided at the side ends of the heat exchanger 56 are connected to the left and right connecting portions 51, 5 via a fixture (not shown).
1, and the connecting portions 51, 51 also serve as a heat exchanger support portion.

Connecting portions 51, 51 which are both sides of the rear plate 22
A cross-sectional shape curved along the cross-flow fan 53 is provided between the two, and further extends, and the lower end portion thereof has the front panel 2
A step portion 22a that is engaged and connected to the tip of the first ventilation passage forming portion 30 is formed.

Therefore, the rear plate 2 in the assembled state
In the curved portion of 2, the ventilation path forming portion 30 is formed together with the front panel 21. There is a predetermined distance from the step 22a,
The front drain pan 57 is integrally installed across the tip portions of the connecting portions 51, 51 in a state of being inclined obliquely forward. A nose portion 57a is formed in a portion of the front drain pan 57 facing the cross flow fan 53, and a lower front end edge is integrally extended.

This extension extends along the upper edge of the outlet 26 formed in the front panel 21 in a state where the extension is assembled, and the lower surface of the front drain pan 57 is the front panel 21.
The air outlet passage 29 is formed together with the air passage forming portion 30.

As shown enlarged in FIG. 5 (A), a drain gutter 58 is integrally provided inside one of the connecting portions 51, that is, on the side of the ventilation passage forming portion 30. The rear end portion of the drain gutter 58 is opened to the rear drain pan 55, and the front end portion is opened to the front drain pan 57 to connect the rear drain pan and the front drain pan.

As shown in FIG. 5 (B), this drain gutter 58 drains the drain water substantially right below the end of the rear drain pan 55 so as to avoid the bearing 54 of the cross flow fan 53, and then the front with a gentle slope. An intermediate portion is formed in a substantially right angle shape so as to guide drain water to the drain pan 57.

From the relationship of the molds for forming the drain gutter 58 in a right angle shape, the ventilation passage forming portion 30 near the drain gutter 58 is formed.
Since it is also formed at a right angle, as shown in FIG. 5 (A) again, the ventilation path forming portion 30 that is further inside the drain gutter 58.
A plurality of ribs 59 are provided on the side. The front end edges of these ribs 59 are bent in an R shape so as to follow the shape of the cross flow fan 53.

By providing the ribs 59, the ventilation passage forming portion 30 can be formed in a shape along the cross flow fan 53 without forming a right-angled portion.
Even if it is provided in the ventilation passage forming unit 30, the air blowing characteristics do not deteriorate.

The indoor unit constructed in this way performs the refrigerating cycle operation for the heat exchanger 56 and drives the blower 50, so that the air to be conditioned is supplied from the front intake port 25a and the upper intake port 25b. It is sucked into the unit body 20 and passes through the heat exchanger 56 for heat exchange.

After the heat exchange, the heat exchanged air is guided to the outlet ventilating passage 29 and blown out from the outlet 26 into the air-conditioned room. At this time, the left and right louvers 41 and the upper and lower louvers 43
The blowing direction can be set arbitrarily with and.

By adopting the rear plate 22 which constitutes the unit body 20 as described above, there are the following advantages. That is, since the heat exchanger 56 bent so as to surround the cross flow fan 53 is provided, the drain pan position is divided into a plurality of positions. However, since the rear drain pan 55 is integrally provided on the rear plate 22 and the front drain pan 57 is integrally provided via the connecting portion 51, the drain water is collected without increasing the number of parts.

Since the drain gutter 58 is integrally formed in addition to the rear drain pan 55 and the front drain pan 57,
Drain water collected in the rear drain pan 55 travels through the drain gutter 58 and is smoothly guided to the front drain pan 57 without requiring any connection work and without any step difference in each mounting portion. It is surely discharged to the outside through a drain hose (not shown) connected.

Since the drain gutter 58 is provided by utilizing the connecting portion 51 for connecting the rear plate 22 and the front drain pan 21, the number of parts is reduced by effectively using the parts, and the unit main body is used. The width dimension of 20 can be reduced.

Further, since the drain gutter 58 is located inside the outlet ventilation passage 29 constituted by the rear plate 22 and the front drain pan 57, the drain water of the rear drain pan 55 is guided to the outside of the outlet ventilation passage 29. There is no opening for this purpose, and the air that is not heat-exchanged from this opening, so-called raw air, does not flow into the blowout air passage 29, and the temperature change of the blowout air due to the intake of raw air and the drain in the blowout air passage 29. Water condensation can be prevented.

If the drain gutter 58 is formed at a right angle due to the shape of the molding die and the ventilation passage forming portion 30 in the vicinity thereof is also formed at a right angle, the blowing characteristic of the cross flow fan 53 is adversely affected.

However, in the vicinity of the drain gutter 58,
Ribs 59 that are curved to follow the shape of the cross flow fan 53
Since the fan is integrally provided, it is possible to prevent deterioration of the blowing characteristics of the fan 53.

Since the blower 50 is supported and the heat exchanger 56 is supported by the connecting portions 51, 51, the necessary function is provided without increasing the number of parts.

[0051]

As described above, according to the present invention, in claim 1, the unit main body is provided with the rear drain pan at a portion facing the upper surface suction port and the front drain pan at a portion facing the front surface suction port. Since they are integrally provided, respectively, in claim 2, a drain gutter for flowing the drain water collected by the rear drain pan to the front drain pan is provided in the connecting portion connecting the unit main body and the front drain pan. Since the drain gutter is located inside the ventilation passage for the heat exchange air composed of the unit body and the front drain pan, the fan grate of the blower is provided near the drain gutter located inside the ventilation passage in claim 4. Since the rib bent along is provided, in the claim 5, a support portion for supporting the heat exchanger is formed in the connection portion for connecting the unit body and the front drain pan. According to claim 6, since the front drain pan is integrally provided with a nose portion for guiding the heat exchange air blown out from the blower, the number of parts can be effectively reduced to facilitate the assembly work. Therefore, it contributes to cost reduction, ensures reliable treatment of drain water, and provides various effects such as increased rigidity of the unit body.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an indoor unit of an air conditioner showing an embodiment of the present invention.

FIG. 2 is an exploded vertical sectional view of the indoor unit of the embodiment.

FIG. 3 is an exploded perspective view of the indoor unit of the embodiment.

FIG. 4 is an exploded perspective view of a rear plate of the embodiment and a blower and a heat exchanger arranged on the rear plate.

5 (A) and 5 (B) are perspective views in which different parts of the rear plate of the embodiment are omitted.

FIG. 6 is a vertical sectional view of an indoor unit of an air conditioner showing a conventional example.

[Explanation of symbols]

20 ... Unit body, 50 ... Blower, 56 ... Heat exchanger,
25a ... Front suction port, 25b ... Upper suction port, 51 ...
Connection part, 55 ... Rear drain pan, 57 ... Front drain pan, 5
8 ... Drain gutter, 29 ... Outlet air passage, 53 ... Cross flow fan, 59 ... Rib, 57a ... Nose part.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Mr. Atsushi Nagasawa, Atsushi Nagasawa, 336, Tatehara, Fuji, Shizuoka Prefecture, inside the Fuji factory, Fuji Co., Ltd. ) Inventor Nobusuke Shirakawa 336 Tatehara, Fuji City, Shizuoka Prefecture, Toshiba Corporation Fuji Factory (72) Inventor Tadashi Tanaka 336 Tatehara, Fuji City, Shizuoka Prefecture Toshiba ABYE Co., Ltd.

Claims (6)

[Claims] 1. A unit main body comprising a housing, and a fan and a heat exchanger surrounding the blower are housed inside the unit main body, and the front and upper portions of the unit main body are opposed to the heat exchanger. In an indoor unit of an air conditioner equipped with a suction port, a rear drain pan and a front part are provided in the unit body as a drain pan for collecting drain water generated in the heat exchanger, as a drain pan. An indoor unit for an air conditioner, wherein front drain pans are integrally provided at portions facing the suction port. 2. The air drain according to claim 1, wherein a drain gutter for flowing drain water collected by the rear drain pan to the front drain pan is provided at a connecting portion connecting the unit main body and the front drain pan. An indoor unit of a harmony machine. 3. The indoor unit for an air conditioner according to claim 2, wherein the drain gutter is located inside an outlet ventilation passage constituted by a unit body and a front drain pan. 4. The room of the air conditioner according to claim 3, wherein a rib bent along the fan shape of the blower is provided near the drain gutter located inside the blower path. unit. 5. The indoor unit for an air conditioner according to claim 1, wherein a support portion that supports the heat exchanger is formed at a connection portion that connects the unit body and the front drain pan. . 6. The indoor unit for an air conditioner according to claim 1, wherein the front drain pan is integrally provided with a nose portion for guiding heat exchange air blown from the blower.