JPS6219852Y2 - - Google Patents

Description

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

There are two types of indoor units: cooling-only types and heat pump-based heating/cooling types.In general, the housings of indoor units that use both air-conditioning and heating are thicker and have a greater depth than those of cooling-only units. has been done. This is because, due to its air blowing capacity, it is necessary to use a large-diameter blower (cross flow fan) in a heating/cooling unit. Therefore, conventionally, several types of molds are prepared and the casings applied to the molds are manufactured separately, but this is not preferable in terms of cost. Furthermore, the blower is not easy to maintain because the mounting portion of the blower is integrally molded on the frame body side of the casing, and it is not possible to take out only the mounting portion. This problem can be solved by making the frame body that makes up the casing divisible into an upper frame and a lower frame that has a blower attachment part, and replacing the lower frame depending on whether it is thin or thick. As a result, it becomes necessary to move the mounting position of the heat exchanger back and forth. That is,
In the case of a thin type, the upper end of the heat exchanger can be placed in close contact with the inner wall of the upper frame, but in the case of a thick type, the upper end of the heat exchanger must be placed slightly forward due to the design. This is because it will not happen. However, when the heat exchanger is shifted forward in this way, a gap is created between the heat exchanger and the upper frame, and the air sucked in from the air inlet bypasses the heat exchanger and is not cooled. Another problem arises in that cooling or heating capacity is reduced because the air is discharged from the air.

Therefore, the purpose of this invention is to provide a housing that can be used for both thin and thick housings, and in which the mounting position of the heat exchanger can be changed in the front and rear directions. An object of the present invention is to provide an indoor unit having a structure that can reliably seal the space between the indoor unit and the indoor unit.

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 is a first holding plate 2 formed so as to pivotally support a connecting portion between the output shaft of a motor (not shown) and the rotating shaft of the blower 6 between the lower frame 5
1a and a second holding plate 21b formed to hold down the rear part of the motor. In this case, the first holding plate 21a is tightened to the lower frame 5 by two male screws, Second holding plate 21
b has a tongue piece 23 that engages with a boss 22 erected on the side of the motor storage chamber 17;
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 this invention, the bearing metal 25 fitted into the bearing hole 26 is firmly fixed using a separately prepared fixing member 27. That is, this fixing member 27
are engagement holes 28, 2 bored in the bearing plate 20.
8, a pair of hook pieces 29, 29 formed to elastically fit into the bearing metal 25, and the bearing hole 2.
6, and a gutter-shaped main body part 30 formed to be forcibly inserted into the upper gap created between the bearing metal 25 and the bearing metal 25 into the bearing hole 26. Hold. In that case,
According to this invention, the main body portion 30 includes a bearing plate 20.
A protruding piece 31 extending inside the bearing plate 25 and covering the bearing metal 25 in an eave-like manner is connected to the bearing plate 2.
The condensed water dripping from above the bearing metal 2
5. Prevents it from entering the room. 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. In addition, during cooling operation, the housing 1 is provided with an air outlet 1 that transmits cold air cooled by the heat exchanger 7 along with the air passage wall.
Dew receiving groove 3 for receiving condensed water flowing down to side 6
3 is provided. As illustrated in detail in FIGS. 7 and 8, this groove 33 is integrally formed with the lower frame 5 along the lower edge of the air outlet 16, and has a groove bottom where dew condensation forms. Fine indentations 34 in the form of serrations or knurlings are formed to promote the evaporation of water. 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 to prevent wind noise, leaving a slight gap. A water-absorbing material 36 made of, for example, open-cell urethane foam is disposed therein. As mentioned above,
This frame body 2 is assembled from an upper frame 4 and a lower frame 5, but in this invention,
It has a structure that allows the piping 38 connected to the heat exchanger 7 to be fixed to the casing 1 without using metal fittings or the like during assembly. That is, as shown schematically in FIG. 9, there is a pipe 38 on the lower frame 5 side.
A guide groove 39 is formed for pulling out the pipe 38 downward from the housing 1. On the other hand, a clamping plate is formed on the upper frame 4 side to cooperate with the guide groove 39 to clamp the pipe 38. 40 are provided.
In this embodiment, the neck of the bearing housing provided between the blower mounting portion 15 of the lower frame 5 and the motor storage chamber 17 is used as the above-mentioned guide groove 39, while the clamping plate 40 is integrally molded 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. As mentioned above, the condensation receiving groove 18 is provided around the blower mounting part 15, but the control room
1 and the motor storage chamber 17, there is no condensation groove around the control chamber 11, so if condensation water adheres to the back wall of the control chamber 11, there is a risk that it will directly flow down the interior walls, etc. It is from. 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,
By providing the concave stepped portion 42 between the back wall portion of the air passage chamber 10 and the back wall portion of the control chamber 11, the heat conduction distance between them becomes longer.
There is almost no possibility that dew condensation water will adhere to the back wall portion of 1, and the area to which dew condensation water adheres can be minimized as a whole. Next, the heat exchanger 7 will be explained. 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. In this case, the side plates 8 It includes a shaped protrusion 43 and an L-shaped support piece 44 bent outward along its lower end. Note that a receiving plate 45 with screw holes, which is used when screwing the upper frame 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 a tongue piece 48 formed so as to be placed over the support piece 44 are provided. Therefore, according to this configuration, the locking groove 47 is fitted into the protrusion 43 from below, the lower end is rotated, the tongue piece 48 is overlapped with the support piece 44, and both are placed under the upper frame 4, for example. By screwing from the direction, the heat exchanger 7 can be easily and reliably attached to the side plates 8, 8.

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, a 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 connection, the piping 38 connected to the heat exchanger 7 is connected to each frame 4, 5 by the guide groove 38 and the clamping plate 40.
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 bottle-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, the frame main body 2 is connected to the upper frame 4.
and a lower frame 5 having a blower mounting portion 15, and by replacing the lower frame, the housing can be changed into a thin type for cooling only and a thick type for both air conditioning and heating. In the case where the mounting position of the heat exchanger 7 is adjusted in the front-rear direction together with the front cover attached to the frame body 2, a packing material is removably attached between the heat exchanger 7 and the upper frame 4. Because it can be mounted, it is possible to ensure an airtight seal between the heat exchanger and the upper frame, especially when using a thick configuration, and prevent a decrease in the capacity of this indoor unit. .

[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 component 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)

[Claims for Utility Model Registration] (1) A casing consisting of a frame body that has a receiving groove that supports the lower end of the heat exchanger and a blower attachment part, and a front cover that is removably covered over the frame body. In the indoor unit of the air conditioner, the front cover has a first fitting position where the casing is thinly formed and a second fitting position where the casing is thickly formed with respect to the frame main body. The heat exchanger is configured such that its upper end can be adjusted in the front-rear direction centering on the lower end depending on the mounting position of the front cover, and The front cover is the second
When the heat exchanger is in the fitted position and the upper end of the heat exchanger is adjusted to the forward position, the space between the upper end and the frame body is airtightly shielded by a packing material. Indoor unit with special features. (2) In claim (1) for utility model registration, the frame main body consists of an upper frame and a lower frame having a blower attachment part, and the lower frame is replaceably combined with the upper frame. An indoor unit featuring: (3) The indoor unit according to claim (1), wherein the packing material is made of a strip of soft rubber or soft synthetic resin.