JPS6219849Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an indoor unit of an air conditioner.

The housing of an indoor unit generally consists of a frame body and a front cover that is removably attached to the frame body. A working square hole is drilled. This square hole is
Normally, in order to prevent the air flowing in from the heat exchanger from bypassing the heat exchanger and flowing directly into the blower side from the back side, a separately prepared shielding material such as tape or urethane foam is used to prevent unnecessary gaps from forming. will be sealed. However, with this method, it is difficult to seal reliably, and
This work is surprisingly troublesome as it has to be done in parallel with the assembly work of the frame body.

Therefore, an object of this invention is to provide an indoor unit which has a simple structure and prevents the air from the square holes described above from bypassing the heat exchanger and directly flowing into the blower side.

Hereinafter, this invention will be described in detail with reference to embodiments shown in the accompanying drawings.

As shown in FIGS. 1 and 2, this indoor unit has a housing 1 consisting of a frame body 2 formed for wall hanging, and a front cover 3 that is detachably placed on the frame body 2. It is equipped with In this case, the frame body 2 is composed of an upper frame 4 used as a common base and a lower frame 5 that is replaceably combined with the upper frame 4. By replacing the lower frame 5, It is possible to change between the thin air-conditioning only machine shown in FIG. 1 and the thick air-conditioning/heating machine shown in FIG. 2 with a thick structure.
That is, as shown in detail in FIGS. 3 and 4, the frame main body 2 is divided at the mounting area of the blower (cross flow fan) 6, and the upper frame 4 has a A pair of left and right side plates 8, 8 are provided to form an air passage chamber 10 related to the exchanger 7, and a control room 11 is provided to house an electrical component box 9 shown by imaginary lines in FIG. In this embodiment, the control room 11 is partitioned off by a partition plate 12 that is separate from the side plate 8. A dew receiving groove 14 for receiving condensed water flowing down is integrally formed at the lower end of the partition plate 12. Further, a square hole 13 is formed in the upper part of the back of the upper frame 4, which cooperates with a hook plate (not shown) provided on the wall surface to which the upper frame 4 is attached (see FIG. 5). On the other hand, the lower frame 5 has a blower mounting portion 15 included in the air passage chamber 10 described above.
, an air outlet 16 connected below the air outlet 16 , and a motor storage chamber 17 that accommodates a motor (not shown) that drives the blower 6 . Note that this motor storage chamber 17 is located below the control chamber 11 described above. The lower frame 5 also has a dew catch groove 18 formed around the blower mounting portion 15, and is located at an appropriate location in the dew catch groove 18, in this embodiment, at the right-hand front corner in FIG. A drain port 19 is provided. In this case, the dew receiving groove 18 is formed in an annular shape as described above, but in this specification, for convenience of explanation, the dew receiving groove disposed in front of the blower mounting portion 15 is referred to as reference numeral 18a, and on the other hand, A dew receiving groove located behind the blower mounting portion 15 is indicated by reference numeral 18b, and the lower end of the heat exchanger 7 is disposed within the dew receiving groove 18a. The blower 6 includes a bearing plate 20 that is integrally formed on the lower frame 5 and a holding member 21 that is configured as a separate part.
It is rotatably mounted on the blower mounting portion 15 while being connected to a motor (not shown). The holding member 21 connects the connecting portion of the output shaft of the motor (not shown) and the rotating shaft of the blower 6 to the lower frame 5.
A first holding plate 21a formed to be pivotally supported between the motor and a second holding plate 21b formed to hold down the rear part of the motor, in this case,
The first retaining plate 21a is fastened to the lower frame 5 with two male screws, whereas the second retaining plate 21a
1b has a tongue piece 23 that engages with a boss 22 erected on the side of the motor storage chamber 17, and this tongue piece 2
3 is engaged with the boss 22, and the other end side is screwed to the lower frame 5. As shown in FIG. 6, the bearing plate 20 has a bearing hole 26 that fits and supports a bearing metal 25 made of, for example, a self-lubricating metal, which is attached to the rotating shaft 24 of the blower 6. In the invention, the bearing metal 2 fitted in the bearing hole 26 is
5 is firmly fixed using a separately prepared fixing member 27. That is, this fixing member 27 is connected to the engagement hole 2 bored in the bearing plate 20.
1 formed to elastically fit into 8, 28
Consisting of a pair of hook plates 29, 29 and a gutter-shaped main body portion 30 formed to be forcibly inserted into the upper gap created between the bearing metal 25 and the bearing hole 26, this main body portion 30 Bearing metal 25
is held so as to be pressed into the bearing hole 26. In this case, according to this invention, the main body portion 30 is provided with a protruding piece 31 that extends inside the bearing plate 20 and covers the bearing metal 25 like an eave, so that drips can drip from above the bearing plate 20. This prevents condensed water from entering the bearing metal 25. In this embodiment, the bearing metal 25 is used as a bearing fitting for the rotating shaft 24, but this may be a known ball bearing. The housing 1 also has a dew receiving groove 33 for receiving condensed water that flows down to the air outlet 16 side along with the cold air cooled by the heat exchanger 7 through the air passage wall during cooling operation. is provided. This groove 33 is
As illustrated in detail in FIGS. 7 and 8, the air outlet 16 is integrally formed with the lower frame 5 along the lower edge of the air outlet 16, and has a groove bottom that promotes evaporation of condensed water. A serration-like or knurling-like fine indentation 34 is formed to allow this to occur. In the actual assembly process, this groove 33 is covered with a folded flange 35 formed at the opening edge of the front cover 3 with a slight gap left in order to prevent wind noise. A water-absorbing material 36 made of, for example, open-cell urethane foam is placed inside. As mentioned above, this frame main body 2 is connected to the upper frame 4.
and a lower frame 5, and this invention has a structure in which the piping 38 connected to the heat exchanger 7 can be fixed to the casing 1 without using metal fittings or the like during assembly. That is, as schematically shown in FIG. 9, a guide groove 39 is formed on the lower frame 5 side for pulling out the piping 38 below the housing 1, whereas the upper frame 4 On the side, the piping 3 cooperates with the guide groove 39.
A clamping plate 40 formed to clamp 8 is provided. In this embodiment, the blower mounting portion 15 of the lower frame 5 and the motor storage chamber 1 are
The neck of the bearing housing provided between the bearing housing and the bearing housing 7 is used as the above-mentioned guide groove 39,
On the other hand, the clamping plate 40 is integrally formed with the back wall forming the control chamber 11 on the upper frame 4 side. Regarding the back wall of the upper frame 4, this invention is designed to prevent condensed water from easily adhering to the back wall of the control room 11 during cooling operation. This is because, as mentioned above, the condensation catch groove 18 is provided around the blower mounting part 15, but there is no dew catch groove around the control room 11 and motor storage chamber 17, so the control room 11
This is because if condensed water adheres to the back wall of the room, there is a risk that it will directly flow down the walls of the room. Therefore, in this invention, as shown in FIGS. 4 and 10, one side plate that partitions the air passage chamber 10 through which the air cooled by the heat exchanger 7 passes and the control chamber 11 A concave stepped portion 42 is provided along the line 8 from the back side of the upper frame 4 toward the inside of the air passage chamber 10. In this way, the back wall portion of the air passage chamber 10 and the control chamber 1
By providing the recessed step 42 between the back wall of the control room 11 and the back wall of the control room 11, the heat conduction distance between them becomes longer, so there is almost no risk of condensed water adhering to the back wall of the control room 11, and the overall This allows you to minimize the areas where condensation water adheres. Next, heat exchanger 7
I will explain about it. The heat exchanger 7 is mounted so as to lean against the above-mentioned pair of side plates 8, 8 formed on the upper frame 4, but in this case, the side plates 8 are attached to the top-shaped , and an L-shaped support piece 44 that is bent outward along the lower end of the protrusion 43 . Note that a receiving plate 45 with screw holes, which is used when screwing the upper frame 4 and the lower frame 5 together, is connected to the front end of one of the support pieces 44 . On the other hand, although only one side of the heat exchanger 7 is shown in FIG. A locking groove 47 opened upward so as to be engaged from below, and the support piece 44
tongue piece 48 formed to be placed overlappingly
is provided. Therefore, according to this configuration, the locking groove 47 is fitted into the protrusion 43 from below, the lower end is rotated, and the tongue piece 48 is attached to the support piece 44.
The heat exchanger 7 can be easily and reliably attached to the side plates 8 by stacking them on top of each other and screwing them together from below the upper frame 4, for example.

In this embodiment, two lower frames 5 with different sizes of blower mounting portions 15 are prepared,
By replacing this lower frame 5, the housing 1
As mentioned above, it is possible to change the type to either a cooling-only type or a cooling/heating type.
Next, while explaining the assembly procedure, other features of this invention will also be described. First, the blower 6 and a motor (not shown) for driving the blower 6 are set on the lower frame 5. The holding member 21 and fixing member 27 described above are used for this purpose.
In parallel with this, the heat exchanger 7 is firmly screwed to the upper frame 4 through a mounting plate 46 provided at the header portion thereof so as to lean against the side plates 8, 8. Thereafter, the upper frame 4 and the lower frame 5 are assembled and screwed together as shown in FIGS. 3 and 4 to assemble the frame body 2. In this regard, the piping 38 connected to the heat exchanger 7 is connected to each frame 4,
The lower end of the heat exchanger 7 is placed in the dew receiving groove 18a, and the lower end of the back wall of the upper frame 4 is inserted into the dew receiving groove 18b. Most of the equipment is assembled in this way, but in the case of the cooling-only machine shown in Fig. 1, the air flowing in from the square hole 13 for wall hanging bypasses the heat exchanger 7 and goes directly into the air passage. Room 1
In order to prevent heat from flowing into the heat exchanger 7, in this invention, a rib 50 is integrally molded on the upper inner surface of the back wall of the upper frame 4, extending so as to come into contact with the back surface of the heat exchanger 7 and sealing the gap therebetween. ing. On the other hand,
When configuring the thick air-conditioning and heating equipment shown in FIG. 2, since a large lower frame 5 is used,
Accordingly, the heat exchanger 7 is disposed slightly forward compared to the above case, that is, shifted toward the front when viewed from the front, so that the rib 50 and the heat exchanger 7
A gap will be created between the two, but this invention is equipped with a packing material 51 made of soft rubber, soft synthetic resin, or the like to close the gap. This packing material 51 is designed to be removably attached in a groove 52 having a U-shaped cross section and formed to include the rib 50 as an upper wall on the upper frame 4 side. As shown in FIG. 11, ribs 53 are alternately formed on the top and bottom surfaces to sandwich and frictionally hold the packing material 51 in a zigzag pattern. However, instead of this rib 53, for example, a pin-shaped protrusion may be used to prevent the packing material 51 from coming off. In addition, when the heat exchanger 7 is shifted toward the front side as described above, the mounting plate 46 may be replaced with a wider one. Then, attach the front cover 3 to the frame body 2.
This indoor unit is completed by covering the unit with a curtain plate 54, which is integrally formed with a curtain plate 54 on the rear peripheral edge and has a width that compensates for the increase in depth. A cover is used. In the above-described configuration, the condensed water that adheres to each part flows as follows, especially during cooling operation. That is, the condensed water adhering to the partition plate 12 of the control room 11 is removed from the dew receiving groove 14 formed below.
from there, it flows down along the motor holding cover 32 of the first holding plate 21a, and drains into the drain port 19.
be led to. The condensed water adhering to the inner wall surface of the bearing plate 20 flows downward, bypassing the bearing metal 25 of the blower 6, while being guided by the protruding piece 31 of the fixing member 27, and finally Together with the condensed water that has adhered to the air passage wall, the condensed water enters the dew receiving groove 33 formed at the opening edge of the air outlet 16 and is naturally evaporated. Further, condensed water adhering to the back wall of the upper frame 4 is captured in the dew receiving groove 18b and discharged from the drain port 19. In FIG. 8, reference numeral 55 indicates a wind direction switching plate 56 for changing the flow of air blown out from the air outlet 16.
is a heat insulating material made of foamed urethane resin or the like provided on the dew receiving groove 18 of the lower frame 5 and the outer wall surface of the air passage chamber.

As is clear from the above description of the embodiment, according to this invention, a rib 50 is formed on the upper frame 4 included in the frame body 2 and extends so as to come into airtight contact with the back surface of the heat exchanger 7. Therefore, it is possible to ensure that the air flowing in from the square hole 13 for wall hanging bypasses the heat exchanger 7 and flows into the air passage chamber 10 without using a shield such as tape or urethane foam as in the conventional case. It can be prevented. Note that this invention is not limited to the above embodiment in which the frame body 2 can be divided into an upper frame 4 and a lower frame 5, but can also be applied to a frame body that is integrally molded. be able to.

[Brief explanation of the drawing]

The figures are all related to embodiments of this invention. Figure 1 is a schematic sectional view of an indoor unit configured as a thin air-conditioning unit, and Figure 2 is a thick indoor unit configured as a heating and cooling unit. 3 is a front exploded perspective view of the frame body, Figure 4 is a rear exploded perspective view of the frame body, Figure 5 is a sectional view taken along the - line in Figure 4, and Figure 6 is a sectional view showing the bearing part of the blower, Fig. 7 is an exploded perspective view showing the air outlet part, Fig. 8 is a sectional view of the air outlet part, and Fig. 9 shows the piping fixing part. A schematic perspective view, FIG. 10 is a cross-sectional view for explaining the configuration of the back wall of the frame body,
FIG. 11 is a diagram for explaining the mounting state of the packing material. In the figure, 1 is the housing, 2 is the frame body, 3 is the front cover, 4 is the upper frame, 5 is the lower frame, 6 is the blower, 7 is the heat exchanger, 8 is the side plate, 9 is the electrical equipment box, and 10 is the Air passage room, 11 is a control room, 12 is a partition plate, 13 is a square hole, 14, 18, 33 is a condensation groove, 15 is a blower mounting part, 16 is an air outlet,
17 is a motor storage chamber, 19 is a drain port, 20 is a bearing plate, 21 is a holding member, 24 is a rotating shaft, 25 is a bearing metal, 26 is a bearing hole, 27 is a fixing member, 3
0 is a main body part, 31 is a protruding piece, 32 is a motor holding cover, 36 is a water absorbing material, 38 is a pipe, 39 is a guide groove, 40 is a holding plate, 42 is a recessed step, 43 is a protrusion, 44 is a support piece, 46 is a mounting plate, 47 is a locking groove, 48 is a tongue piece, 50 is a rib, 51 is a packing material, 52 is a groove, and 56 is a heat insulating material.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A casing consisting of a frame body having a through hole for wall hanging that cooperates with a bracket provided on the wall side of the room, and a front cover that is removably covered over the frame body. In the indoor unit of the air conditioner, the indoor unit of the air conditioner has a heat exchanger and a blower installed in the air passage chamber of the frame body, the inner wall surface of the frame body is provided with air from the through holes that absorbs the heat. An indoor air conditioner characterized in that a rib is formed that extends so as to airtightly abut on the back surface of the heat exchanger in order to prevent air from flowing into the room through the air passage bypassing the exchanger. unit. (2) In claim (1) of the utility model registration, the inner wall surface of the frame body is provided with a pair of left and right side plates that together with the ribs form the air passage chamber, and the heat exchanger is arranged between the side plates. An indoor unit characterized by being installed across an opening formed by.