JPH109665A - Ceiling suspended air conditioner - Google Patents

Abstract

(57) [Summary] [Problem] Even if drain water drops from the heat exchanger on the way without changing the arrangement of parts at all, such as arranging a pair of heat exchangers, this drain water Surely receive
To provide a ceiling-mounted air conditioner that ensures comfortable air conditioning. In a unit main body, two sets of heat exchangers (10a, 10b) formed in a C shape and two blowers (11) are provided.
a, 11b, and two air outlets 5a, 5b dedicated to the respective blowers for blowing and guiding the heat exchange air after heat exchange with the heat exchangers. A drain pan 16 that is disposed along the lower end and collects drain water flowing down along the heat exchanger, and is formed in a C-shape, with a predetermined interval on the inclined lower surface side of each of the heat exchangers. The sub-drain pan 17 which is stacked and has a heat exchange air conducting opening 41 and receives drain water dropped from the heat exchanger while flowing down to the drain pan.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-suspended air conditioner, and more particularly to an improvement in a structure for treating drain water generated in a heat exchanger.

[0002]

2. Description of the Related Art In recent years, there has been known an air conditioner in which a good indoor temperature distribution is ensured by two-way blowing in response to the tendency of a large living room. This type of air conditioner has a schematic configuration as shown in FIG. That is, two sets (hereinafter, referred to as a pair) of indoor heat exchangers a, a are arranged in a unit main body A attached to the ceiling in a state in which the heat exchangers are formed in a C shape.

[0003] Two (hereinafter referred to as a pair) indoor blowers b, b are arranged opposite to the inclined upper sides of the indoor heat exchangers a, a, respectively. Each indoor blower b has a so-called cross flow fan.

[0004] The unit body A has an opening at the bottom surface closed by a decorative panel c, and a housing portion excluding the decorative panel c is located behind the ceiling. And the decorative panel c
Is exposed on the ceiling in the room.

[0005] The decorative panel c is provided with a suction port f at the center thereof into which a grill d and a filter e are fitted in a two-tiered state. Both sides of the suction port f are blow outlets g, g
It has become.

That is, a pair of outlets g is provided, and each outlet g is provided with a louver h that can adjust the blowing direction within a predetermined range. Further, a drain pan i is arranged on the inner surface side of the decorative panel c along both sides of the suction port f. The heat exchanger a is assembled in a state where the lower end of the heat exchanger a enters the drain pan i.

[0007]

The air-conditioning function, which is constructed as described above, has no problem with the air-conditioning function. In particular, the treatment of the drain water generated in the heat exchanger a during the refrigeration cycle operation is as follows. There are the following problems.

That is, since the heat exchanger a is restricted in the height of the unit main body A, the drain water may drip in the middle of the heat exchanger a because the heat exchanger a is inclined and disposed in a C shape. .

Originally, the fins constituting the heat exchanger a and the peripheral surface of the heat exchange pipe are subjected to a treatment for maintaining hydrophilicity, and the drain water does not drop on the way, but smoothly to the lower end. It is designed to flow down.

[0010] However, over a long period of use, the hydrophilicity becomes weak due to aging, and the drain water is easily dropped on the way. The drain water dropped in the middle falls on the filter e fitted into the suction port f due to the structure of the unit. And finally, it falls into the room which is a living space, and impairs comfortable air conditioning.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a heat exchanger without changing the arrangement of parts at all, such as disposing a pair of heat exchangers in a C shape. An object of the present invention is to provide a ceiling-suspended air conditioner that reliably receives the drain water even if the drain water drops on the way from the exchanger and ensures comfortable air conditioning.

[0012]

Means for Solving the Problems A ceiling-suspended air conditioner according to the present invention for satisfying the above-mentioned object is, as claim 1,
An air conditioner body, and disposed inside the air conditioner body,
Two sets of heat exchangers are formed close to each other along the upper edge and separated from each other at the lower end, and are arranged opposite to each heat exchanger to circulate indoor air. And two air blowers provided in the main body of the air conditioner, and a suction port for sucking and guiding the heat exchange air to both heat exchangers and a heat after the heat exchange with the heat exchangers when the respective blowers are driven. In an air conditioner provided with two outlets for blowing and guiding exchange air, a drain pan arranged along a lower end of each of the heat exchangers to collect drain water flowing down from the heat exchangers; A sub-drain pan formed in the shape of a letter, overlapped at a predetermined interval on the inclined lower surface side of each of the heat exchangers, has an opening for conducting heat exchange air, and receives drain water dropped from the heat exchanger. And characterized in that:

According to a second aspect, the sub-drain pan according to the first aspect is composed of two sets of divided sub-drain pans,
A screw hole is provided at the upper end of one of the sub-drain pan divided bodies, and a fixing piece is provided at the upper end of the other sub-drain pan divided body, and these fixing pieces and the screw section are connected via a fixing tool. Is formed in a C-shape.

[0014] Claim 3 is Claim 1 and Claim 2
The sub-drain pan described above is characterized in that a locking piece projects from a lower end thereof, and the locking piece is interposed and fixed between the drain pan and a heat exchanger.

By providing the means for solving the above-mentioned problems, the invention according to claims 1 to 3 does not impair conduction of heat exchange air to the heat exchanger at all, and at the same time, does not affect the heat exchange. Even if the drain water drops from the middle of the inclined heat exchanger, the water is dropped on the sub-drain pan formed in a U-shape arranged on the lower part of the pair of heat exchangers, and smoothly placed on the drain pan. Guidance can be processed reliably. A comfortable air conditioning is maintained without any drain water dripping from the suction port into the living space.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. The exterior configuration of an indoor unit that is a ceiling-suspended air conditioner as shown in FIG.

In FIG. 1, reference numeral 1 denotes a unit main body, which is an air conditioner main body, which is vertically suspended via a hanging tool 2. The lower surface side is a decorative panel 3, which is exposed from a ceiling (not shown). That is, the unit main body 1 is mounted in an embedded state behind the ceiling.

The decorative panel 3 has the same surface as the ceiling, and a suction port 4 is provided at the center except for both sides, and outlets 5a and 5b are provided on both sides. A suction grill is fitted into the suction port 4 and can be opened and closed on the decorative panel 3. The outlets 5a and 5b are directed to different blowing directions.

A refrigerant pipe P is connected to one side of the unit body 1, and a drain pipe 6 is connected in the vicinity of the refrigerant pipe P. A connector cover 7 for accommodating a terminal unit (not shown) is provided on this side surface.

The unit main body 1 has a sectional structure as schematically shown in FIG. A fan casing 19 is formed on an inner peripheral surface of the unit main body 1 by a blower base 18 described later, and a pair of indoor heat exchangers 10a, 10b and an indoor blower 11a, 11b are arranged opposite to each other.

Each of the outlets 5a, 5b has a louver 12, 12 which can adjust the blowing direction within a predetermined range, and a nose is provided between each of the indoor heat exchangers 10a, 10b and the outlet 5a, 5b. 13a and 13b are provided.

Therefore, in the unit main body 1, two systems of ventilation passages 14 from the suction port 4 to each of the air outlets 5a and 5b are provided.
a, 14b are formed. Each ventilation path 14a, 1
4b, the heat exchange air in the room R to be conditioned at the lower part of the ceiling 15 is taken into the main body 1 through the suction port 4, and the indoor heat exchangers 10a, 10b
b and the indoor blowers 11a, 11b and the outlet 5
The air is guided by the nose 13a, 13b between the air outlets 5a, 5b and the air outlet 5a, 5b to the air-conditioned room R again.

Here, the heat exchange air blown out from one of the outlets 5a is directed toward the zone A of the room R to be air-conditioned. The heat exchange air blown out from the other blowout port 5b is directed toward the zone B of the room R to be air-conditioned.

The upper ends of the indoor heat exchangers 10a and 10b are close to each other, and the lower ends thereof are separated from each other. Each of the indoor heat exchangers 10a and 10b is inclined inward, and has a C-shape as a whole.

A drain pan 16 for collecting drain water flowing down from the heat exchanger is disposed opposite to lower ends of the indoor heat exchangers 10a and 10b. This drain pan 1
The nose portions 13a and 13b are integrally formed on both side end portions of the base member 6.

A sub-drain pan 17 which is formed in a U-shape in the same manner as the heat exchanger is disposed on the inclined lower surface side of the indoor heat exchangers 10a and 10b. Supported by

FIG. 3 is an exploded view of the components of the indoor unit. Here, the unit body 1 omits both side plates.
Inside, a blower base 18 is accommodated. The blower base 18 includes a pair of fan casings 19,
A cross flow fan constituting the indoor blowers 11a and 11b is provided in the fan casing 19 which is a resin molded product integrally provided with a heat exchanger support portion 20, a motor receiving portion 21, and a drain pump mounting base 22 on one side. A shaft 23 is provided, one end of which is pivotally supported by a rubber bearing 24 which is attached to a mounting hole of the heat exchanger support 20, and the other end of which is inserted into the rotation shaft of the fan motor 25.

The fan motor 25 is hung on the motor receiving portion 21 and covers a motor cover assembly 26.
The fan motor is attached and fixed to the motor receiving portion. That is, the pair of indoor blowers 11 a and 11 b are supported by the blower base 18.

In each of the indoor blowers 11a and 11b, the positions of the fan motor 25 and the rubber bearing 24 are
They are provided on opposite sides of each other. This is for each fan motor 2
This is because, when 5 is provided on the same side, the rotational directions of the fan motors must be reversed, so that two types of fan motors are prepared, and the number of components increases.

The above-mentioned indoor heat exchanger 1 formed in a C shape
Reference numerals 0a and 10b denote end plates at both ends of the connection fixing plate 2a.
It is connected and fixed at 7. And it is supported by the heat exchanger support part 20 formed in the said blower base 18, and is attached and fixed by appropriate means.

The drain pump mounting base 22 includes:
The drain pump 28 is mounted and fixed. The suction part of the drain pump 28 is located in the drain water reservoir 16a provided in the drain pan 16 and has a function of forcibly discharging the drain water into a drain passage (not shown).

Next, the sub-drain pan 17 will be described in detail. This sub drain pan 17 is shown in FIGS.
, A pair of sub-drain pan divided bodies 30, 30
And these sub-drain pan splits are
It will be assembled in a substantially C-shape.

The sub-drain pan divided bodies 30 have the same shape and structure. Central guide gutter 3 in the center
1 are provided along the vertical direction, and end plates 3 are provided on both left and right sides.
2, a pair of connecting plates 33, 33 are provided between the center guide gutter 31 and both end plates 32 along the vertical direction.

From the central guide gutter 31 to the left and right connecting plates 33
Through the left and right end plates 32 to form a plurality of water trays 34
Are installed vertically at predetermined intervals. Each water receiving tray 34 is inclined with respect to the horizontal plane so that the center guide gutter 31 side is the lowest and gradually increases from the connecting plate 33 to the end plate 32 side. In other words, it is inclined downward from both end plates 32 toward the central guide gutter 31.

In particular, as shown in FIG.
Reference numerals a and 10b each include a plurality of fins F and a heat exchange pipe P that penetrates these fins and forms a refrigerant flow path.

Then, the heat exchange pipes P in each row are linearly arranged in the vertical direction in a state where they are arranged at predetermined positions and in a C shape. The water receiving trays 34 of the respective stages are located opposite the lower part of the heat exchange pipes P arranged linearly.

As shown in FIG. 7, each water receiving tray 34 is oriented at a predetermined inclination angle with respect to the vertical line L and is parallel to each other. Draining rib 34b that is bent together and dish body 3
At the lower end of 4a, there is provided a rising rib 34c that is bent integrally at an angle close to the vertical line L while being bent integrally above the inclined surface.

A drain rib 34b provided on the inclined upper side of one of the water receiving trays 34 and the water receiving
4 and the lower end rising rib 34c located on the lower side of the inclination are disposed so as to overlap with the vertical line L.

The center guide gutter 31 has a U-shaped cross section, and the end of each water tray 34 is connected to both sides thereof.
Communicating with each other. The connection plate 33 is provided with each water receiving tray 3.
4 support each other, and there is no hindrance in the flow of drain water in the water pan. The end plate 32 closes a side end opening of each water tray 34.

A screw hole 35 is provided at the upper end of the sub-drain pan divided body 30 and at an extension position of one connecting plate 33, and a fixed plate portion 36 is projected at an extending position of the other connecting plate 33. . The fixing plate 36 has a mounting hole 37 formed therein.

Since the screw hole 35 and the fixing plate 36 are provided at the same position on each of the sub-drain pan divided bodies 30, the sub-drain pan divided bodies 30 face each other to form a C-shape. The other divided body fixing plate 36 faces the divided body screw hole 35 of FIG.

That is, as shown in FIG. 8, the fixing plate portion 3 protruding from the other sub-drain pan divided body 30 is provided in the screw hole 35 provided in one sub-drain pan divided body 30.
6 face each other. In more detail, the screw hole 35
The mounting holes 37 provided in the fixing plate 36 face each other.

The screw hole 35 through the mounting hole 37
A mounting screw 38 serving as a fixing tool is screwed into the fitting. As shown in FIG. 9, the fixing plate 36 is attached and fixed in contact with the sub-drain pan divided body 30 facing the sub-drain pan divided body 30. As a result, the sub-drain pan divided bodies 30 and 30 are assembled in a C shape, and the sub-drain pan 17 is formed.

As described above, since the screw holes 35 and the fixing plate portions 36 are provided at the same positions of the respective sub-drain pan divided bodies 30, they are connected using the sub-drain pan divided bodies 30 having the same shape on both the left and right sides. Thus, the sub-drain pan 17 formed in a C shape can be obtained, the influence on the manufacturing cost can be suppressed to a negligible extent, and there is no mistake in the parts on the left and right. Obtainable.

As shown in FIG. 4 again, at the lower ends of the central guide gutter 31 and the respective connecting plates 32, a locking piece 40 which is a rectangular flat plate is integrally connected. Then, as shown in FIG. 6, in the assembled state, all the locking pieces 40 are sandwiched and fixed between the heat exchangers 10a and 10b and the end of the drain pan 16. In this state, the sub-drain pan 17 itself and the heat exchangers 10a and 10b are arranged in parallel at an arbitrary distance S.

The indoor heat exchanger 1 thus constructed
0a, 10b, drain pan 16 and sub drain pan 1
7 is a ceiling-suspended air conditioner equipped with a heat exchanger 1
A refrigeration cycle operation is performed on 0a and 10b, and the indoor blowers 11a and 11b are rotationally driven.

The air to be conditioned is sucked into the unit main body 1 from the suction port 4 and is formed between the central guide gutter 31, the connecting plate 33, the water receiving tray 34 and the like of the sub-drain pan divided body 30 constituting the sub-drain pan 17. It is guided to the heat exchangers 10a and 10b after passing through the opening 41 for conduction which is a gap which is formed. Since the opening 41 for conduction has a sufficient opening area, the conduction of heat exchange air does not cause any resistance.

Here, the heat exchange is performed between the refrigerant flowing through the refrigerant passages of the heat exchangers 10a and 10b with the introduced refrigerant.
The air is blown out from each of the air outlets 5a and 5b through the air outlets a and 14b. That is, air conditioning of the room to be air-conditioned is achieved.

Each of the indoor heat exchangers 10a and 10b condenses moisture contained in the air to be conditioned by the heat exchange action. The surfaces of the heat exchangers 10a and 10b are cooled below the dew point, and drain water is generated. Normally, the drain water flows down along the slope of the heat exchangers 10a and 10b, falls from the lower end to the drain pan 16, and is collected.

The effect of the hydrophilic treatment applied to the heat exchangers 10a and 10b may be weakened by aging over a long period of use. In such a state, the drain water is supplied to the heat exchanger 1
It falls before reaching the lower end of 0a, 10b.

That is, as shown in FIG.
Since the heat exchange pipes P constituting the heat exchange pipes 0a and 10b are arranged linearly in the vertical direction, the drain water that falls sequentially from the upper side to the lower heat exchange pipe, and that falls from the lowermost heat exchange pipe is Is received by the dish main body 34a of the water receiving tray 34 arranged at the lower part.

Then, in the sub-drain pan 17, the drain water is collected from the dish main body 34a to the rising rib 34c. There is also drain water that falls from the fin F other than the heat exchange pipe P. These drain waters wet the draining ribs 34b constituting the water receiving tray 34, wet the dish main body 34a, or raise the rising ribs 34c.
Can be received directly.

The drain water dropped on the drain rib 34b is
The water flows downward toward the slope, and finally drops into the water tray 34 adjacent to the lower side of the water tray 34.
That is, a draining rib 34b of one water receiving tray 34,
Since it is arranged so as to wrap with respect to the vertical line L with the rising rib 34c of the other adjacent water receiving tray 34,
Drain water dropped from the draining rib 34b is reliably received by the rising rib 34c of the adjacent water receiving tray 34.

At least, the drain water wetted by the drain ribs 34b is filled with the drain pan 34 as shown by the broken line in FIG.
Does not wrap around the back side wall surface of the tray body 34a and drip from the gap between the water tray 34 and the adjacent water tray 34.

The drain water that wets the dish main body 34a is collected by the rising rib 34c and merges with the drain water that has directly dropped on the rising rib 34c. The drain water of each water tray 34 flows along the slope and is guided to the central guide gutter 31 connected to the lower end of the slope. Since the lower end of the central guide gutter 31 communicates with the drain pan 16, all drain water is collected by the drain pan 16 and drained to the outside.

In other words, even if the hydrophilicity of the heat exchangers 10a and 10b is reduced due to aging, and drain water may drop from the middle of the slope, the drain water is surely removed by the sub-drain pan 17. Received and drained. Drain water does not fall into the living space R from the suction port 4 at all, and comfortable air conditioning is ensured. On the other hand, the sub-drain pan 17 does not have significant resistance to the heat exchange air introduced into the unit body 1.

[0057]

As described above, according to the first aspect of the present invention, on the inclined lower surface side of the heat exchanger formed in a C shape,
Sub-drain pans, which have openings for conducting heat exchange air and receive drain water dripping from the heat exchanger, are placed one on top of the other at predetermined intervals, so the layout of each component, such as the heat exchanger, is completely changed Without this, it is possible to reliably receive the drain water dripped on the way from the heat exchanger, and to achieve an effect of ensuring comfortable air conditioning.

According to the second aspect of the present invention, the sub-drain pan is composed of two sets of sub-drain pan divided bodies, and one of the sub-drain pan divided bodies is provided with a screw hole at the upper end, and the other sub-drain pan divided body is at the upper end. Since the fixing piece portion is provided on the base plate and the fixing piece portion and the screw portion are connected to each other via a fixing tool to form a U-shaped sub-drain pan, the shape of the sub-drain pan becomes simple, and the manufacturing cost is reduced. The adverse effect can be suppressed to a negligible level, and the assembling workability is improved.

According to the third aspect of the invention, the sub-drain pan has a locking piece projecting from the lower end thereof, and the locking piece is interposed and fixed between the drain pan and the heat exchanger.
The drain water received by the sub-drain pan can be reliably guided to the drain pan, and the assembling work can be facilitated.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a ceiling-suspended air conditioner showing an embodiment of the present invention.

FIG. 2 is a schematic longitudinal sectional view of the ceiling-suspended air conditioner of the embodiment.

FIG. 3 is a schematic exploded perspective view of components of the ceiling-hanging air conditioner of the embodiment.

FIG. 4 is an exploded perspective view of a sub drain pan according to the embodiment.

FIG. 5 is a partially omitted front view of the sub-drain pan divided body of the embodiment.

FIG. 6 is a diagram illustrating an arrangement relationship between a heat exchanger, a sub-drain pan, and a drain pan according to the embodiment.

FIG. 7 is an enlarged longitudinal sectional view of a part of the sub-drain pan of the embodiment.

FIG. 8 is a view for explaining assembly of the sub-drain pan according to the embodiment.

FIG. 9 is a diagram of the embodiment, in a state where sub-drain pan assembly is completed.

FIG. 10 is a schematic longitudinal sectional view of a conventional ceiling-suspended air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Air conditioner main body (unit main body), 10a, 10b ... Heat exchanger, 11a, 11b ... Blower, 4 ... Inlet, 5a, 5b ... Outlet, 16 ... Drain pan, 17 ... Sub drain pan, 30 ... Sub drain pan Divided body, 35: screw hole, 36: fixing piece, 38: fixing tool, 40: locking piece.

Claims (3)

[Claims] 1. An air conditioner main body, and two sets of heat exchangers disposed in the air conditioner main body and formed close to each other along an upper end edge and separated from each other at a lower end portion. An exchanger, and two air blowers arranged to face each heat exchanger in order to circulate indoor air, and provided in the air conditioner main body, and by driving each air blower, heat exchange air is supplied. An air conditioner comprising: a suction port for guiding suction to both heat exchangers; and two outlets for blowing and exchanging heat exchange air after heat exchange with the heat exchanger. A drain pan for collecting drain water flowing down from the heat exchanger, and formed in a C-shape and overlapped on the inclined lower surface side of each of the heat exchangers at a predetermined interval to form heat exchange air. It has an opening for conduction and drain water dripped from the heat exchanger. Kicking ceiling type air conditioner which is characterized by comprising a Sabudorenpan. 2. The sub-drain pan according to claim 1, wherein
A set of sub-drain pan divided bodies, a screw hole is provided at the upper end of one sub-drain pan divided body, and a fixed piece is provided at the upper end of the other sub-drain pan divided body. Characterized by being connected to each other via a fixture to form a C-shape. 3. The sub-drain pan according to claim 1, wherein a locking piece projects from a lower end of the sub-drain pan, and the locking piece is interposed and fixed between the drain pan and the heat exchanger. Ceiling type air conditioner characterized by being performed.