JPH0894114A - Fitting structure of drain pan of indoor machine for air conditioner - Google Patents

Abstract

PURPOSE: To obtain a fitting structure of a drain pan of an indoor machine for a top suspended type air conditioner, which simplifies operations for fitting and removal. CONSTITUTION: In an indoor machine for an air conditioner which is equipped with a fan top plate 4 supporting a fan 5 at the back of a drain pan 1 and with an air direction changing vane support member 8 supporting an air direction changing vane 7 at a part above the drain pan 1, an engaging part enabling detachable engagement of the drain pan 1 with the fan top plate 4 is provided on the back side of the drain pan 1, while the front part 1a of the drain pan 1 is fitted to the air direction changing vane support member 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain pan mounting structure for an indoor unit for an air conditioner.

[0002]

2. Description of the Related Art Conventionally, as a drain pan mounting structure for an indoor unit for a ceiling-mounted air conditioner, a mounting structure as shown in FIGS. 20 and 21 has been adopted.

That is, in FIGS. 20 and 21,
First, reference numeral 50 is an indoor unit main body casing of a ceiling-mounted air conditioner, 51 is a drain pan, 53 is a fan, 54 is a fan top plate, and 55 and 55 are side plates. The drain pan 51 has the fan top plate 454 and the side plate 55. 90 below each other
The first and second pressing plates 56 and 57, which are attached with their degrees changed, are pressed from the lower side to be supported and fixed as shown in the figure.

[0004]

However, in the case of the structure in which the pressing plates 56 and 57 are respectively used to press from below at two points as described above, the drain pan 51 is held and the screws of the pressing plates 56 and 57 are held. In addition to the time and effort required to perform the stopping work, since there are two work locations, it is difficult to carry out the work of mounting and removing during maintenance after installation, which makes it difficult for one person to work.

[0005]

The present invention has been made for the purpose of solving the above-mentioned problems, and in order to achieve the above-mentioned object, the present invention comprises the following means for solving the problems. ing.

That is, the drain pan mounting structure for an indoor unit for an air conditioner according to the present invention has a fan top plate 4 supporting a fan 5 behind the drain pan 1 and an upper portion of the drain pan 1 as shown in FIGS. In an air conditioner indoor unit including a wind direction changing blade supporting member 8 that supports a wind direction changing blade 7, an attachable / detachable engaging portion between the drain pan 1 and the fan top plate 4 is provided on the back side of the drain pan 1. At the same time, the front portion 1a of the drain pan 1 is attached to the wind direction changing blade supporting member 8.

Further, in the drain pan mounting structure of the indoor unit for an air conditioner of the present invention, in the above-mentioned structure, the detachable engaging portion between the drain pan 1 and the fan top plate 4 is a protrusion formed on the drain pan 1 side. It is composed of a portion 12 and a concave portion 32 formed on the fan top plate 4 side.

Further, in the drain pan mounting structure of the indoor unit for an air conditioner of the present invention, in the above structure, the detachable engaging portion between the drain pan 1 and the fan top plate 4 is formed on the drain pan 1 side. It is composed of a convex portion 12 having a square cross section and a square hole portion formed on the fan top plate 4 side.

Furthermore, in the drain pan mounting structure for an indoor unit for an air conditioner according to the present invention, in each of the above constructions, the front portion 1a of the drain pan 1 is attached to the wind direction changing blade supporting member 8 from the lower surface side thereof via the bolt 28. It is configured by being attached to the lower surface.

[0010]

The present invention has the following actions in correspondence with the respective configurations described above.

That is, the drain pan mounting structure of the indoor unit for an air conditioner according to the present invention has the drain pan 1 as described above.
An indoor unit for an air conditioner comprising a fan top plate 4 supporting a fan 5 behind and a wind direction changing vane supporting member 8 supporting an airflow direction changing vane 7 above a drain pan 1. 1 and the fan top plate 4 are detachable from each other, and the front portion 1a of the drain pan 1 is attached to the wind direction changing blade support member 8.

Therefore, when the drain pan 1 is mounted, the rear surface of the drain pan 1 is detachably engaged with the fan top plate 4 through the engaging portion, and the rear surface side of the drain pan 1 is not attached. Easily supported without need.

After the engagement and support on the back side, the front section 1
Since only the a side needs to be attached to the wind direction changing blade support member 8 as described above, the attaching and detaching work portion is the front portion 1.
Since there is only one place on the a side, independent installation and removal work can be easily achieved.

Further, in the drain pan mounting structure of the indoor unit for an air conditioner of the present invention, in the above structure, the detachable engaging portion between the drain pan 1 and the fan top plate 4 is formed on the drain pan 1 side. It is composed of a portion 12 and a concave portion 32 formed on the fan top plate 4 side.

Therefore, when mounting the drain pan 1, it is only necessary to detachably engage the convex portion 12 of the rear surface of the drain pan 1 with the concave portion 32 of the fan top plate 4, and the rear surface side of the drain pan 1 does not have to be mounted. Easily supported without need.

After the engagement and support on the back side, the front section 1
Since only the a side needs to be attached to the wind direction changing blade support member 8 as described above, the attaching and detaching work portion is the front portion 1.
Since there is only one place on the a side, independent installation and removal work can be easily achieved.

Further, in the drain pan mounting structure of the indoor unit for an air conditioner of the present invention, in the above structure, the detachable engaging portion between the back surface of the drain pan 1 and the fan top plate 4 is:
It is composed of a convex portion 12 having a square cross section formed on the drain pan 1 side and a square hole portion 32 formed on the fan top plate 4 side.

Therefore, when the drain pan 1 is attached, the convex portion 12 having a square cross section on the back surface of the drain pan 1 is attached.
Is detachably engaged with the square hole 32 of the fan top plate 4, and the back side of the drain pan 1 is easily supported without any mounting work.

After the engagement and support on the back side, the front section 1
Since only the a side needs to be attached to the wind direction changing vane supporting member 8 as described above, the attaching and detaching work portion is only one on the front side, and the independent attaching and detaching work can be easily realized.

Further, in the drain pan mounting structure of the indoor unit for an air conditioner of the present invention, in each of the above-mentioned constitutions, the front portion 1a of the drain pan 1 is provided with the wind direction changing blade supporting member 8 of the wind direction changing blade supporting member 8 from the lower surface side thereof through the bolt 28. It is configured to be attached to the lower surface.

Therefore, when the rear surface side is fixed as described above, the bolt 28 is then inserted from the lower surface side of the front portion 1a to be screwed into the lower surface of the airflow direction changing blade supporting member 8 or in the same screwed state. You can easily install and remove by simply releasing.

[0022]

As a result, according to the drain pan mounting structure for the indoor unit for an air conditioner of the present invention, the conventional presser plate is used to press and fix at two different 90-degree positions. Compared to the structure, it is not necessary to hold the drain pan 1 when mounting and removing the drain pan 1, so that one person can work.

Therefore, working efficiency is greatly improved.
Further, since the positioning at the time of mounting becomes accurate, the assembling accuracy is also improved.

[0024]

1 to 19 show a drain pan mounting structure for an indoor unit for a ceiling-mounted air conditioner according to an embodiment of the present invention.

First, FIG. 1 shows an external structure of the indoor unit for an air conditioner (hereinafter, simply referred to as an indoor unit) in a ceiling installed state, and FIG. 2 shows a sectional structure inside the indoor unit.

In the figure, reference numeral 2 is a main body casing of the indoor unit 3, 5 is a fan (Sirocco fan), 6 is a heat exchanger, and 4 is a space between the fan 5 side installation chambers in the main body casing 2. A fan top plate for partitioning the heat exchanger 6 side installation space, 1 is a drain pan provided at a lower portion of the heat exchanger 6 in the main body casing 2, and 7 is a vertical blade for changing a wind direction (a wind direction changing blade). ), 8 is a vertical blade mounting plate (wind direction changing blade support member) for horizontally supporting the vertical blades 7, 7 ... In parallel so that they can rotate horizontally, and 9 is a wind direction changing rotatably supported by a support shaft 9a. Is a horizontal blade, 20 is an air outlet passage, 21 is an air outlet, and 40 is a fan duct.

As shown in FIG. 1, the main body casing 2 has a thin overall box-like shape that is long in the left and right sides (cassette type).
The front lower surface side is formed with a rounded surface so that the thickness is slightly reduced from the rear portion side to the front end portion side. Then, the air outlet 21 described above is provided at the center of the front end thereof.
Is extended in the left-right direction and opened. The fan top plate 4 is provided on the back surface of the central portion of the top plate 2a of the main body casing 2.
The upper end side hook-shaped joining edge portion 4a is integrally fastened and fixed.

Further, a bottom plate 2c is attached to the lower portion of the drain pan on the lower surface side of the main body casing 2, and an opening portion for sucking air is further provided to the lower portion of the fan 5.
(Suction grill) 2d is provided. A grill cover (not shown) is detachably fitted in the opening 2d. The bottom plate 2c under the drain pan is
The front end side edge portion is the engaging portion 11 at the front end of the drain pan 1.
In addition, the rear end side edge portion 33 is attached to the lower edge portion 4b of the fan top plate 4.
It is supported by being joined to.

On the other hand, in the drain pan 1, the rear end portion 1b side is detachably engaged with and supported by the fan top plate 4, and the left and right side plates 2b, 2 of the main body casing 2 are also supported.
The front end 1a side is supported with respect to the vertical blade mounting plate 8 which is fixed by being bridged between b.

That is, first, the drain pan 1 is shown in FIG.
As shown in detail in FIG. 7, convex portions 15, 15 having a circular cross section are provided at both ends of the rear end portion on the side of the rear end portion 1b, and the convex portions 1 having a rectangular cross section are located between them.
2,12,12 are provided. On the other hand, a bolt insertion hole 13b and a square washer engagement groove 13c are formed on the lower surface of the front end 1a side, and the bolt insertion hole 13b is formed.
Penetrates upward from the corresponding central portion of the concave groove portion 13a on the upper surface side. As shown in FIG. 6, for example, the concave groove portion 13a is formed inside the drain pan front end portion 1a and extends to both left and right end sides, and the condensed water generated by the vertical blades 7 is introduced into the bottom surface portion thereof. A water absorbing material 17 such as a sponge for holding water and naturally drying is installed.

As shown in FIG. 2, the groove 13a corresponds to the lower side plates 8b, 8b of the vertical blade mounting plate 8 when the drain pan 1 is completely mounted on the lower part of the heat exchanger 6. Mated.

The vertical blade mounting plate 8 is, for example, as shown in FIG. 8, a metal having a U-shaped cross section having a length corresponding to the width of the concave groove portion 13a of the drain pan 1 and the air outlet 21 of the main body casing 2. A drain pan fixing member 18 having a hat-shaped cross section and provided with screw grooves 19 for mounting a drain pan on the lower surface side of the central portion in the longitudinal direction of the drain pan fixing member 18 on both left and right edges thereof, as shown in FIGS. 9 to 12, for example. Parts 18a, 18b
Are integrally welded and fixed via.

Left and right edge portions 18 of the drain pan fixing member 18
The a and 18b are, for example, elongated holes 18c toward the left edge 18a.
However, circular holes 18d are respectively formed on the right side edge portion 18b, and each of these holes is for mounting the drain pan in correspondence with the left and right convex portions 8c, 8d on the lower surface of the flat plate portion 8a of the vertical blade mounting plate 8. The drain pan side bolt insertion hole 13 of the thread groove 19
The axis center with b can be adjusted.

Further, as shown in FIG. 12, a water absorbing material 23 having a predetermined thickness is evenly attached to the entire upper surface of the flat plate portion 8a of the vertical blade mounting plate 8. The water absorbing material 2
For example, a foamed polyurethane foam material or a sponge material is used for 3.

Further, the flat plate portion 8a of the vertical blade mounting plate 8 is also provided.
As shown in FIG. 8, FIG. 12 and FIG.
A plurality of shaft fitting holes 24 for mounting the vertical blades 7 having a substantially Dharma shape as a whole are formed side by side at a predetermined interval in the longitudinal direction.

As shown in FIG. 13, the portion of the water absorbing material 23 corresponding to the shaft fitting hole 24 surrounds the shaft fitting hole 24 and has the circular groove 2 without the water absorbing material 23.
5 is formed.

Vertical blade mounting plate 8 thus formed
Is fitted into the groove 13a extending in the left-right longitudinal direction of the upper surface of the front end 1a of the drain pan 1 from above as described above. In the fitted state, the water absorbing material 23 provided on the bottom of the drain pan side concave groove portion 13a.
On the other hand, the lower edge portions of the side plates 8b and 8b are pressed against each other.

On the other hand, the vertical blade 7, as shown in detail in FIGS. 2 and 14, has a blade portion 7A, a disk-shaped water receiving portion 7B integrally molded below the blade portion 7A, and the water. A shaft portion 7C integrally formed on the lower portion of the receiving portion 7B is provided.

The vane portion 7A has a rectangular shape as a whole, and the upstream portion 71 of the air blowing air A is long and the downstream portion 72 is short about the vertical axis portion of the shaft portion 7C. The first and second knurled surface portions 71a and 71a and 71a, 71a of the air blowing air A upstream portion 71 and the downstream portion 72 of the left and right surfaces of the blade portion 7A are respectively provided as shown in the figure.
a, 72a, 72a are formed, and at their respective boundaries, from the upper side to the lower side water receiving portion 7 as shown in the drawing.
First condensed water guide grooves 73, 73 are formed to extend in the direction of B and the shaft portion 7C and have a predetermined depth.

The air blown upstream side portion 7 of the vane portion 7A.
As shown in the drawing, the knurled grooves of the first knurled surface portions 71a, 71a on both the left and right surfaces are formed as inclined grooves that descend downward from the upstream side to the downstream side of the air blowing air A, respectively. Along with the second knurled surface portions 72a, 7 of the air blown air downstream side portion 72 of the blade portion 7A.
Each of the knurled grooves 2a is formed as an inclined groove that is inclined upward from the lower side toward the upper side from the upstream side to the downstream side of the air blowing air A as shown in the figure.

The first and second knurled surface portions 7 are also provided.
In the formed state of 1a, 71a, 72a, 72a, second and third dew condensation water guide grooves 74, 74 are respectively provided on the lower portions of the left and right surfaces of the upstream side portion 71 and the downstream side portion 72 of the blade portion 7A. , 75, 75 are formed. And
The second and third condensed water guide grooves 74, 74, 75, 75
Is the second condensed water guide groove 74, 74 of the upstream side portion 71.
However, in the inclined groove descending from the upstream side of the air blowing air in the downstream direction, and the third condensed water guide grooves 75, 75 of the downstream portion 72, on the contrary, from the downstream side of the air blowing air to the upstream side. Each of them is formed in an inclined groove that is inclined downward in the lateral direction. There is.

The upper surface portion of the water receiving portion 7B is formed into a mortar-shaped recessed groove surface portion 80 which is deepened from the peripheral edge side toward the central axis direction, and at the same time as the longitudinal direction of the blade portion 7A. Notched grooves 81, 81 penetrating vertically as shown in the drawing are formed on both right and left sides which are orthogonal to each other. Then, in the notch grooves 81, 81, the descending ends of the first, second, and third dew condensation water guide portions 73, 74, 75 are tapered surface-shaped taper portions (concave grooves) where they are gathered. The surface portions 82, 82 are connected continuously.

Further, as shown in detail in FIG. 14, the shaft portion 7C includes a cylindrical shaft body 91 extending downward at the central axis position of the water receiving portion 7B, and both front and rear sides of the lower end side of the shaft body 91. A pair of engagement pieces (engagement protrusions) that are integrally formed by protruding in the blade direction
It is composed of 91a and 91a. A pair of engagement pieces 91
A slit is formed between a and 91a to allow some elastic deformation.

The shaft portion 7C is horizontally rotatably fitted in the shaft portion fitting hole 24 of the vertical blade mounting plate 8 configured as shown in FIG. 13 as shown in FIG. It is locked.

In the fitted state, the vane portion 7A
The vertical blade mounting plate 8 and the vertical blade mounting plate 8 intersect with each other at a predetermined angle, and the cutout grooves 81, 81 of the water receiving portion 7B and the horizontally long shaft-shaped fitting hole 24 of the vertical blade mounting plate 8 are formed. The cutout holes 24b, 24b correspond to the upper and lower sides, and are in a state of always communicating with each other within a predetermined rotation angle range.
Therefore, in this state, the first and second knurled surface portions 71a, 71a, 72a, 72a and the first to third condensed water guide grooves 73, 73 to 75, 75, the tapered surfaces 82, 82 are provided.
Condensed water from the surface of the blade portion 7A collected in the concave groove surface portion 80 of the water receiving portion 7B through the notch groove 81, 81 of the water receiving portion 7B, the notch hole 24b of the shaft portion fitting hole 24, 24b
It is introduced and flows down onto the water absorbing material 23 at the inner bottom portion of the concave groove portion 13a of the lower drain pan 1 via the. Then, after the water absorbent material 23 absorbs and holds water, it is naturally dried.

On the other hand, the fan top plate 4 has a first convex portion 15 having a circular cross section at the left and right ends of the back surface of the drain pan 1.
Inverse U-shaped engaging grooves 31, 31 with which 15 are engaged, and rectangular engaging holes 32, 32, 32 with which the three second convex portions 12, 12, 12 having a rectangular cross section are engaged. Are formed corresponding to each other on the same axis.

When mounting the drain pan 1 in the main body casing 2, first, the drain pan side first and second convex portions 15, 15, 12, 12, 12 are made to correspond to the fan top plate 4 side. Engaging grooves 31, 31 and engaging hole 3
After the rear end portion 1b side is securely supported by the fan top plate 4 by removably engaging with 2, 32, 32, the front end portion 1a side is attached as described below. That is,
After the rear end 1b is supported as described above, the front end 1a of the drain pan 1 is fixed to the drain pan fixing member 18 on the lower surface of the central portion of the vertical blade mounting plate 8 as follows. .

That is, first, as described above, a square washer engaging groove 13c is formed on the lower surface of the front end portion 1a of the drain pan 1, and the upper surface side concave groove portion 13a is formed from the central portion of the washer engaging groove 13c. A bolt insertion hole 13b penetrating upward is provided. Therefore, first, a washer 27 having a corresponding thickness and shape as shown in, for example, FIGS. 16 and 17 is engaged with the washer engaging groove 13c, and is shown in FIG. 18 through the bolt hole 27a of the washer 27. The shaft portion of the bolt 28 is inserted into the bolt insertion hole 13b. Then, the screw groove portion 19 at the center of the drain pan fixing member 18 on the lower surface side of the vertical blade mounting plate 8 corresponding to the tip side screw portion 28a.
Screw to connect. In this state, as described above, the rear end portion 1b side of the drain pan 1 is detachably engaged with and supported by the engagement hole of the fan top plate 4 via the projections 12, 12, 12.

Therefore, the drain pan 1 can be easily held, and the screwing operation of the bolt 27 can be easily performed by one person. Therefore, the work is significantly easier. Also,
In the detaching work, the engaging state on the back surface side is utilized in the same manner as described above, and only the bolt 28 on the front portion 1a side needs to be removed, so that the work can be performed by one person.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of an indoor unit for an air conditioner according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing an internal structure of the indoor unit.

FIG. 3 is a perspective view showing a structure of a drain pan of the indoor unit.

FIG. 4 is a bottom view showing the structure of the drain pan.

FIG. 5 is a rear view showing the structure of the drain pan.

FIG. 6 is a plan view showing a structure of the drain pan.

7 is a view showing a structure of the drain pan of FIG.
It is an A line sectional view.

FIG. 8 is a plan view showing a structure of a vertical blade mounting plate of the indoor unit.

FIG. 9 is an enlarged plan view of a main part of the vertical blade mounting plate.

FIG. 10 is an enlarged bottom view of the drain pan fixing member.

FIG. 11 is a side view of the drain pan fixing member.

FIG. 12 is a perspective view of an essential part seen from the lower side of the vertical blade mounting plate.

FIG. 13 is a perspective view of the vertical blade mounting plate seen from above.

FIG. 14 is a perspective view showing a structure of vertical blades of the indoor unit.

FIG. 15 is a plan view showing a structure of a drain pan mounting washer of the indoor unit.

FIG. 16 is a side view of the same.

FIG. 17 is a perspective view showing a structure of a bolt for mounting the drain pan.

FIG. 18 is a front view showing a structure of a fan top plate of the indoor unit.

FIG. 19 is a view showing the structure of the same fan top plate;
FIG.

FIG. 20 is a horizontal cross-sectional view showing a drain pan mounting structure of a conventional air conditioner indoor unit.

FIG. 21 is a vertical sectional view of the same.

[Explanation of symbols]

1 is a drain pan, 2 is a main body casing, 2a is a top plate, 2b
Is a side plate, 2c is a bottom plate, 2d is an air intake opening, 4 is a fan top plate, 5 is a fan, 6 is a heat exchanger, 7 is a vertical blade, 8
Is a vertical blade mounting plate, 12 is a convex portion, 13a is a concave groove portion, 13b
Is a bolt insertion hole, 13c is a washer engagement groove, 18 is a drain pan fixing member, 27 is a washer, 28 is a bolt, 31 is an engagement groove, and 32 is an engagement hole.

Claims (4)

[Claims] 1. A fan (5) behind the drain pan (1)
An air conditioner indoor unit comprising a fan top plate (4) for supporting a fan and a wind direction changing vane supporting member (8) for supporting a wind direction changing vane (7) above a drain pan (1), comprising: a drain pan (1) A detachable engaging portion between the drain pan (1) and the fan top plate (4) is provided on the rear surface side, and the front portion (1a) of the drain pan (1) is used as the wind direction changing blade support member (8). A drain pan mounting structure for an indoor unit for an air conditioner, which is characterized by being mounted. 2. The detachable engagement part between the drain pan (1) and the fan top plate (4) is provided on the side of the convex part (12) formed on the drain pan (1) side and the fan top plate (4) side. Formed recess (32)
The drain pan mounting structure for an indoor unit for an air conditioner according to claim 1, comprising: 3. The detachable engaging portion between the drain pan (1) and the fan top plate (4) is a convex portion (12) having a rectangular cross section formed on the drain pan (1) side and the fan top plate (4). ) Side is formed with a square hole (32).
Drain pan mounting structure for the indoor unit for the air conditioner described. 4. The front portion (1a) of the drain pan (1) is adapted to be attached to the lower surface of the wind direction changing blade supporting member (8) from the lower surface side thereof through a bolt (28). The drain pan mounting structure for an indoor unit for an air conditioner according to claim 1, 2 or 3.