JPH08320132A - Wall-mounted type indoor air-conditioner device - Google Patents

Abstract

PURPOSE: To provide a wall-mounted type indoor air conditioner capable of avoiding disadvantage by a simple configuration which is found at a device with water droplets produced at a rear surface of a scroll part. CONSTITUTION: A sub-drain pan 6 is arranged at a rear part of a scroll part 9 at a position more upstream side than a drain pan 5 of a heat exchanger 1. A hollow heat-insulating part 10 ranging from a lower side of the sub-drain pan 6 to an air blowing port 14 is formed by a hollow part forming method at a rear side of the scroll part 9. A bottom surface 6b of the sub-drain pan 6 is formed by an upper side partition wall 10a of the hollow heat-insulating part 10, and a side wall 6a of the sub-drain pan 6 is formed by an extended part of a partition wall 10d at the rear surface side. There is provided a water guiding passage 7 for dropping water droplets received at the sub-drain pan 6 into the drain pan 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall-mounted air conditioning indoor unit.

[0002]

2. Description of the Related Art As a indoor unit of a separate type air conditioner, a wall-mounted type is often used at present. FIG.
It is sectional drawing which shows the internal structure of the prior art example of such a wall hanging type air conditioning indoor unit (for example, Unexamined-Japanese-Patent No. 6-109272). In this air conditioning indoor unit, a fan rotor 4 forming a part of a cross flow fan is arranged at a substantially central position of a ventilation chamber 13 surrounded by a front panel 2 and a bottom frame 3. The heat exchanger 1 is arranged along the inner side of the front panel 2 so as to cover the fan rotor 4 from the front (the left side in the figure) and diagonally above, and further below the heat exchanger 1. A drain pan 5 for receiving drain water generated when the heat exchanger 1 is operated is provided as an evaporator. Further, the cross-flow fan, of which the fan rotor 4 constitutes a part thereof, generates a swirl flow having a center inside the fan rotor 4, and this swirl flow generates an air flow from the suction side 13a of the ventilation chamber 13 to the blowout side 13b. It is what makes me. Therefore, this air flow is a flow that temporarily turns back on the side of the bottom frame 3, but a scroll portion 9 is formed in the bottom frame 3 in order to smoothly perform this turning back and efficiently generate the air flow. The scroll portion 9 has an arcuate concave portion having a curvature larger than that of the outer periphery of the fan rotor 4 in the vicinity of the fan rotor 4, and further, the scroll portion 9 has a blowout side 1 of the ventilation chamber 13.
It smoothly connects to 3a and forms a flow passage for conditioned air. In the figure, 8 is a horizontal blade provided to adjust the direction of the conditioned air blown out, and 14 is an outlet for the conditioned air.

In the wall-mounted air-conditioning indoor unit having the above-mentioned structure, the conditioned air flows along the scroll portion 9 and the outlet 1
It is blown from 4 to the room. Therefore, during the cooling operation in which the heat exchanger 1 operates as an evaporator, cold air having a temperature lower than room temperature is continuously blown to the scroll portion 9, so that dew condensation occurs on the back surface of the scroll portion 9, and this is condensed. Then, water drops 11 are formed. However, in the wall-mounted air-conditioning indoor unit, the space of the pipe storage chamber 15 on the rear side partitioned by the bottom frame 3 is limited by the request for downsizing the indoor unit, and the increase in the number of parts increases the cost. Because of the connection, the above water drop 11
It is difficult to specially provide a drain processing mechanism for processing. Therefore, in the air conditioning indoor unit, as shown in FIG. 3, the sub-drain pan 6 for receiving the water droplets 11 generated in the scroll portion 6 is located above the drain pan 5 for receiving the drain water generated in the heat exchanger 1. At the back of the scroll section 9, and further the sub-drain pan 6
A water conduit 7 that connects the drain pan 5 with the drain pan 5 is provided. By adopting such a configuration, the water drop 11 received by the sub-drain pan 6 is naturally dropped along the water conduit 7 to the drain pan 5, and a single drain treatment is performed together with the drain water generated in the heat exchanger 1. It is designed to be processed collectively by the mechanism.

[0004]

In the wall-mounted air conditioning indoor unit having the above-mentioned structure, the scroll portion 9 constitutes a part of the ventilation chamber 13 and is connected to the outlet side 13b thereof. Therefore, when the cooling operation is continued, water droplets 12 are generated not only on the scroll portion 9 in the vicinity of the fan rotor 4 but also on the back surface of the scroll portion 9 in the portion connected to the outlet side 13b. However, in order to naturally drop the water droplet 11 from the sub-drain pan 6 to the drain pan 5 via the water conduit 7, the sub-drain pan 6 must be provided above the drain pan 5. Therefore, the water droplets 12 generated on the lower side of the sub drain pan 6, that is, on the back surface of the scroll portion 9 connected to the outlet side 13b cannot be processed and must be left, and therefore, the devices arranged in the pipe storage chamber 15 or the like. There was a problem of causing problems.
Further, if the drain processing mechanism is specially provided, the increase in the number of parts causes a cost increase, and there is a problem that it is not possible to comply with the demand for downsizing the indoor unit.

The present invention has been made in order to solve the above-mentioned conventional drawbacks, and its purpose is to solve the problem that water droplets generated on the back surface of the scroll portion may cause problems in the device.
It is to provide a wall-mounted air conditioning indoor unit that can be avoided by a simple configuration.

[0006]

Therefore, the wall-mounted air-conditioning indoor unit according to claim 1 is provided with the heat exchanger 1 on the front side, and forms a flow passage for the conditioned air that has been heat-exchanged by the heat exchanger 1. A wall-mounted air conditioning indoor unit equipped with a scroll portion 9 is characterized in that a hollow heat insulating portion 10 formed by hollow molding is provided on the back portion of the scroll portion 9.

The wall-mounted air-conditioning indoor unit according to a second aspect of the present invention includes a drain pan 5 provided below the heat exchanger 1, and a sub-drain pan provided at the back of the scroll portion 9 at a position above the drain pan 5. 6 and a water conduit 7 provided so that the drain water received by the sub-drain pan 6 is dropped onto the drain pan 5, and the hollow heat insulating portion 10 is provided below the sub-drain pan 6 in contact with the sub-drain pan 6. It is characterized by that.

Further, in the wall-mounted air conditioner indoor unit of claim 3, the bottom surface 6a of the sub-drain pan 6 has the hollow heat insulating portion 10
It is characterized in that it is formed as a part of the partition walls 10a to 10d forming the.

[0009]

In the wall-mounted air-conditioning indoor unit of the first aspect, the hollow heat insulating portion 10 formed by hollow molding is provided on the back portion of the scroll portion 9. Therefore, it is possible to prevent the occurrence of dew condensation on the back portion of the scroll portion 9 with a simple configuration, and it is possible to avoid problems that may occur in the device.

Further, in the wall-mounted air conditioning indoor unit of the second aspect, the dew condensation formed above the hollow heat insulating portion 10 is treated by the sub-drain pan 6. Therefore, it is possible to surely perform the drain process and avoid the malfunction of the device. Further, it becomes possible to simplify the molding process by making the hollow heat insulating portion 10 the necessary minimum.

Further, in the wall-mounted air conditioning indoor unit of claim 3,
The sub-drain pan 6 is formed by hollow molding the hollow heat insulating portion 10.
Since the bottom surface of is also formed at the same time, the manufacturing process can be simplified.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the wall-mounted air conditioning indoor unit of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view showing the internal structure of the air conditioner indoor unit. The same members as those in the conventional example are designated by the same reference numerals, and the description thereof is omitted here. The air conditioner indoor unit of the present embodiment is different from that of the conventional example in that its scroll portion 9
In addition, the hollow heat insulating portion 10 extending from the sub-drain pan 6 to the lower end of the scroll portion 9 is formed by hollow molding. The hollow heat insulating portion 10 has a thickness of about 6 mm on the back of the scroll portion 9, that is, on the side of the pipe housing chamber 15 and has a thickness of 4 mm.
Partition walls 10a to 10d and hollow layer 10 surrounded by these
It consists of e and. Then, of the partition walls 10a to 10d, the front side partition wall 10b forms a portion connected to the blower outlet 14 side of the scroll portion 9, and the lower partition wall 10c configures the rear surface side of the blower outlet 14 in a shape as in the conventional example. On the other hand, the upper partition wall 10a forms the bottom surface 6b of the sub-drain pan 6, and the rear wall partition 10d extends upward to project from the upper partition wall 10a.

FIG. 2 is a perspective view of the air conditioning indoor unit as seen from the back side. The sub-drain pan 6 is provided in the scroll portion 9 such that the bottom surface 6b of the central portion thereof is higher than the bottom surfaces 6b of the other portions and gradually descends toward the end portion. Although not shown in the figure, the water conduit 7 is provided at each end of the sub-drain pan 6. Further, the side wall 6 of the sub-drain pan 6
A back side partition wall 10d of the hollow heat insulating portion 10 is formed below and connected to a.

In the wall-mounted air-conditioning indoor unit having the above-described structure, the water droplets 11 generated in the scroll portion 9 above the sub-drain pan 6 due to the continuous cooling operation first fall as they are and are received by the sub-drain pan 6. Then, since the bottom surface 6b of the sub-drain pan 6 is provided with a downward slope from the central portion toward both ends, the water droplets 11 are collected at both end portions of the sub-drain pan 6 as shown by arrows in FIG. The provided water conduit 7 is dropped to flow into the drain pan 5, and the drain water generated in the heat exchanger 1 that is dropped into the drain pan 5 is collectively drained. On the other hand, a hollow heat insulating portion 10 is formed below the sub drain pan 6. Therefore, even when the cooling operation is continued for a long time, the temperature of the back surface side partition wall 10d of the hollow heat insulating portion 10 on the back surface side of the scroll portion 9 below the sub-drain pan 6, that is, the heat insulation effect of the hollow layer 10e. Is hardly reduced by. Therefore, it is possible to prevent water droplets 12 (see FIG. 3) from being generated at this portion, and in combination with the drain treatment by the sub-drain pan 6, avoid a malfunction of the device that may be caused by the presence of the water droplets 12 that have not been treated as they are. be able to. In addition, since the shapes of the ventilation chamber 13 side of the scroll portion 10 and the blowout port 14 are not changed, their performance is not affected.

Although the hollow heat insulating portion 10 is formed by hollow molding, the upper end side of the scroll portion 9 is treated with water droplets 11 mainly by the sub-drain pan 6 to form the hollow heat insulating portion 1.
0 is provided only in a portion that cannot be processed by the sub-drain pan 6. Therefore, since the hollow molding portion is small, hollow molding by a special method is unnecessary, and stable quality can be obtained at low cost. Moreover, since the bottom surface 6b of the sub-drain pan 6 has a downward slope from the central portion toward both ends, the height difference is smaller than in the case where the bottom surface 6b has a slope in one direction from one end to the other end. ing. Therefore, the bottom surface 6b of the sub-drain pan 6 does not become high at one end side and the hollow heat insulating portion 10 does not need to be enlarged. In this respect also, the hollow heat insulating portion 10 can be made smaller and stable molding can be performed. Has become.

Further, the bottom wall 6b of the sub-drain pan 6 is formed by the upper partition wall 10a, and the side wall 6a of the sub-drain pan 6 is formed by the extended portion of the rear partition wall 10d. Therefore, when the hollow heat insulating portion 10 is formed by hollow molding, the sub-drain pan 6 can be formed at the same time, and the manufacturing process can be simplified. Further, by using the bottom frame 3 already molded in this way as a component, the number of assembling steps can be reduced.
Furthermore, since the scroll portion 9, the sub-drain pan 6 and the hollow heat insulating portion 10 are made of a single material, it is not necessary to separate the materials, and the recycling can be facilitated. Effective use of resources can be promoted.

Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, when the water droplet 11 generated in the scroll portion 9 above the hollow heat insulating portion 10 does not pose a problem,
The sub-drain pan 6 and the water conduit 7 may be omitted. The shape and the like of the hollow heat insulating portion 10 can be changed and implemented within the scope of the present invention, and the sub drain pan 6 may be attached to the scroll portion 9 as a separate member.

[0019]

The wall-mounted air conditioning indoor unit according to claim 1,
A hollow heat insulating portion formed by hollow molding is provided on the back of the scroll portion. Therefore, it is possible to prevent the occurrence of dew condensation on the back portion of the scroll portion with a simple configuration, and it is possible to avoid problems that may occur in the device.

In the wall-mounted air conditioner indoor unit according to the second aspect of the invention, the dew condensation formed above the hollow heat insulating portion is treated by the sub-drain pan. Therefore, it is possible to surely perform the drain process and avoid the malfunction of the device. Further, it becomes possible to simplify the molding process by making the hollow heat insulating portion the minimum required.

Further, in the wall-mounted air conditioning indoor unit of claim 3,
Since the bottom surface of the sub-drain pan is also formed at the same time by hollow-molding the hollow heat insulating portion, the manufacturing process thereof can be simplified.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a wall-mounted air conditioning indoor unit of the present invention.

FIG. 2 is a rear perspective view of the above embodiment.

FIG. 3 is a cross-sectional view of a conventional example of a wall-mounted air conditioning indoor unit.

[Explanation of symbols]

 1 Heat Exchanger 5 Drain Pan 6 Sub Drain Pan 7 Water Conduit 9 Scroll Section 10 Hollow Insulation Section

Claims (3)

[Claims] 1. A heat exchanger (1) is provided on the front side,
In a wall-mounted air-conditioning indoor unit equipped with a scroll portion (9) forming a flow passage for conditioned air that has been heat-exchanged by this heat exchanger (1), a hollow formed by hollow molding in the back portion of the scroll portion (9). A wall-mounted air-conditioning indoor unit characterized by having a heat insulating part (10). 2. A drain pan (5) provided below the heat exchanger (1), and a sub-drain pan (6) provided at the back of the scroll part (9) at a position above the drain pan (5). ) And a water conduit (7) provided so that the drain water received by the sub-drain pan (6) is dropped into the drain pan (5), the hollow heat insulation part (10) includes the sub-drain pan (6). ), The wall-mounted air conditioner indoor unit according to claim 1, wherein the wall-mounted air conditioner indoor unit is provided. 3. The bottom surface (6) of the sub-drain pan (6).
a) is a partition wall (10) forming the hollow heat insulating part (10).
The wall-mounted air conditioning indoor unit according to claim 2, which is formed as a part of (a) to (10d).