JPH0914748A - Wall embedded type air conditioning equipment - Google Patents

Abstract

PURPOSE: To provide wall embedded type air conditioning equipment which enables expanding of working space for the connection of piping without enlarging the equipment to further facilitate piping work meeting the requirement of compact designing. CONSTITUTION: In a wall-embedded type air conditioning equipment which has a piping connection part with an auxiliary piping 12 and a communication piping connected on a top board 3a of a casing of a room unit, a notch part 26 is provided on the top board 3a before the upper end of a heat exchanger 6 and the front of the heat exchanger 6 is made to communicate with an upper part of the top board 3a. The communicating space is utilized as working space for connecting piping. A lid part 14a for closing the notch part 26 is provided integral with a piping cover 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall-embedded air conditioner in which an indoor unit buried in a wall and an outdoor unit are connected by a connecting pipe.

[0002]

2. Description of the Related Art An indoor unit of a wall-embedded air conditioner as described above is installed with its front face facing the room and the four sides embedded in the wall. Therefore, the on-site piping that needs to be installed is installed by working from the front of the indoor unit without attaching the front grille having the suction port. And what connected this on the top plate of an indoor unit casing is described in Unexamined-Japanese-Patent No. 3-5638, for example.

FIG. 4 is a schematic front view of an indoor unit showing a state of the conventional wall-embedded air conditioner before piping work. The indoor unit mounted in the wall 30 with fixing screws 25, 25 includes a heat exchanger 6 provided toward the front surface thereof and a drain pan 7 arranged below the heat exchanger 6. The auxiliary pipe 12 connected to the heat exchanger 6 is arranged on the top plate 33 so as to be drawn out, and the communication pipe 22 connecting the auxiliary pipe 12 and an outdoor unit (not shown) is The auxiliary pipe 12 is arranged so that its ends face each other.

FIG. 3 is an explanatory view showing a procedure of piping work in an embodiment of the wall-embedded air conditioner of the present invention. The procedure of piping work of the conventional example will be described with reference to this figure. . First, as shown in FIG. 3A, the end portion of the auxiliary pipe 12 is drawn out in a procedure, and the connecting pipe 22 is gently bent in accordance with this, and is connected to the auxiliary pipe 12. This connection
Manually rotate the flare nut 28 (see Fig. 2 (b)) 3-4.
After screwing in the rotation, tighten the wrench with two spanners to secure it so that gas leakage does not occur. After confirming that there is no gas leakage at the connecting portion, the heat insulating cylinder 23 is attached so that there is no gap as shown in FIG. 2B, and both ends thereof are bound by the binding bands 24, 24, and the pipe connecting portion 27. The outer peripheral portion of is heat-insulated. When the above work is completed, the connected pipe is pushed back into the wall 30 again (see FIG. 7C), and the pipe work is completed.

In the above-mentioned conventional wall-embedded air conditioner, the auxiliary pipe 12 and the connecting pipe 22 of the indoor unit are connected to each other through the top plate 3.
It is done on 3 or in front of it. Therefore, it is not necessary to install or remove the outlet assembly that was necessary when connecting at the lower side of the indoor unit, and the "long press" of the house interferes with the work and may damage it. Since there is no such thing, the connection work was relatively easy.

[0006]

However, in the above-mentioned conventional example, as shown in FIG. 4, the auxiliary pipe 12 is drawn out from the space sandwiched by the upper wall 30 and the top plate 33 of the indoor unit casing, and the front side of this space is pulled out. Have to do the plumbing work. In this piping work, as described above, tightening the flare nut 28 with two spanners,
Although it is necessary to perform heat insulation coating of the pipe connection portion 27 with the heat insulation cylinder 23, there is a problem that the work space for performing these operations is not necessarily sufficient just in front of the space. However, if a special space is provided in order to expand the working space, the device becomes large, and therefore there is a problem that it is not possible to meet the demand for making the indoor unit compact.

The present invention has been made in order to solve the above-mentioned conventional drawbacks, and an object thereof is to expand a work space for connecting pipes without increasing the size of the apparatus, thereby requiring compactness. (EN) Provided is a wall-embedded air conditioner capable of further facilitating piping work along a line.

[0008]

Therefore, the wall-embedded air conditioner of claim 1 has a suction port 18 in a removable front plate 2 of an indoor unit casing 1 embedded in a wall 30. The heat exchanger 6 is provided in the casing 1 on the rear side of the suction port 18.
And a pipe connection portion 27 to which the auxiliary pipe 12 connected to the heat exchanger 6 and the communication pipe 22 for connecting the auxiliary pipe 12 to the outdoor unit are connected. In the wall-embedded air conditioner provided on the top plate 3a, a cutout portion that connects the top plate 3a and the inside of the casing 1 to the top plate 3a on the front side of the upper end of the heat exchanger 6. 26 is provided, and the front of the heat exchanger 6 is used as a working space S when connecting the auxiliary pipe 12 and the connecting pipe 22 through the notch 26.

Further, the wall-embedded air conditioner according to a second aspect of the present invention is provided with a lid portion 14a for closing the communication between the upper portion of the top plate 3a and the inside of the casing 1 by closing the notch portion 26. I am trying.

Furthermore, the wall-embedded air conditioner of claim 3 is
The pipe cover 14 is provided to cover the pipe connection portion 27 from the front, and the pipe cover 14 has the lid portion 14a.

The wall-embedded air conditioner of claim 4 is characterized in that the pipe connecting portion 27 is formed by heat-insulating the outer peripheral portion thereof.

[0012]

In the wall-embedded air conditioner according to the first aspect, the front of the heat exchanger 6 is effectively used as the working space S for connecting pipes. Therefore, it is possible to secure a sufficient working space S without increasing the size of the apparatus, and thus it becomes possible to facilitate the piping work while complying with the request for compactness.

According to the wall-embedded air conditioner of claim 2,
Since the cutout portion 26 can be closed by the lid portion 14a after the pipe connection work is completed, even if the large cutout portion 26 is provided, the flow passage of the intake air is not disturbed. Therefore, the pipe connection work can be facilitated without deteriorating the air conditioning performance.

Further, in the wall-embedded air conditioner according to a third aspect of the present invention, a part of the pipe cover 14 provided in advance is provided in the cover portion 1.
4a. Therefore, it is possible to avoid an increase in cost and an increase in man-hours for installation without increasing the number of parts.

In the wall-embedded air conditioner of claim 4, the expanded work space S can be utilized to perform heat insulation coating.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the wall-embedded air conditioner of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an exploded perspective view of an indoor unit in one embodiment of the wall-embedded air conditioner. A casing 1 of this indoor unit includes a front grill (front plate) 2, a frame 3 having a top plate 3a as a part thereof, a left side plate 4 and a right side plate 5. A fan rotor 8 of a cross-flow fan driven by a fan motor 9 is provided in the casing 1, and a heat exchanger 6 in front of the fan rotor 8 and drain water generated in the heat exchanger 6 are provided. And a drain pan 7 for receiving the above. In addition, the heat exchanger 6 is connected to an outdoor unit (not shown) to form a refrigerant circuit, and an auxiliary pipe 12 including a liquid pipe 10 and a gas pipe 11 for circulating the refrigerant in the refrigerant circuit. It is connected. Further, flare nuts 28, 28 for connecting to the connecting pipe 22 (see FIG. 3) are provided at the end of the auxiliary pipe 12 as described above. Further, the top plate 3a is provided with a cutout portion 26 in a portion that is in front of the upper end of the heat exchanger 6, and an insertion port 29 is provided in a position on the right side of the cutout portion 26 when viewed from the front. There is. When the heat exchanger 6 is installed in the frame 3, the auxiliary pipe 12 extends from the insertion port 29 onto the top plate 3a so that the vicinity of the end portion having the flare nut 28 is located above the cutout portion 26. It has become. The connecting pipe 22 (see FIG. 3) is connected to the auxiliary pipe 12 located on the top plate 3a in this way.
These pipes 12, 22 and their connecting portions are connected to the front through a suction port 18 (see FIG. 2) formed in the front grill 2,
That is, since it can be seen from the room, the pipe cover 14 is provided so as to cover the front of the pipes 12 and 22 in order to hide it. Also, the portion extending rearward from the piping cover 14 is
A lid portion 14a for closing the cutout portion 26 is configured. In the figure, 15 is an auxiliary pipe 1 on the top plate 3a.
2 is a pipe pressing plate for stably holding 2 and closing the insertion port 29, 13 is a drain hose for discharging drain water collected in the drain pan 7, and 17 is attached to the front grill 2. A long life filter for dust protection. The indoor unit formed by assembling the above-described components is installed by embedding it in the wall using the installation frame 16. At that time, the auxiliary pipe 12 is connected to the communication pipe 22 (see FIG. 3). After that, the pipe cover 14 is attached, the notch 26 is closed by the lid portion 14a, and then the front grill 2 and the long life filter 17 attached thereto are attached from the front. The front grill 2 can be attached to and detached from the frame 3 and the installation frame 16 because it is necessary to replace the long life filter 17.

FIG. 2 is a transparent side view of the indoor unit installed by being embedded in the wall. As shown in this figure, the heat exchanger 6 provided in the indoor unit includes an upper heat exchanger 6a and a lower heat exchanger 6b, and the lower heat exchanger 6b is provided substantially vertically. On the other hand, the upper heat exchanger 6a is provided so as to be inclined such that the upper end thereof is located on the back side of the lower end. This is to ensure as large a heat exchange volume as possible within a predetermined casing volume. On the other hand, a fan rotor 8 is provided downstream of the heat exchanger 6.
A cross flow fan is constituted by the fan rotor 8, the tongue portion 20 integrally formed with the drain pan 7, and the scroll portion 21 whose lower end side is smoothly connected to the air outlet 19. A pipe connecting portion 27 is arranged on the front side of the top plate 3a. Here, the pipe connecting portion 27 is connected to the auxiliary pipe 12 and the connecting pipe 22 by using a flare nut 28, and the surroundings thereof. Is referred to by referring to the portion that is heat-insulated by the heat insulating cylinder 23 (see FIG. 3B). The cutout portion 26 is provided below the pipe connection portion 27 as described with reference to FIG. 1. However, in FIG. 2, the cover portion 14a for closing the cutout portion 26,
And the pipe 1 formed integrally with the lid 14a from the front.
The sectional shape of the pipe cover 14 provided so as to cover the parts 2 and 22 is shown.

In the above indoor unit, when the fan rotor 8 is driven by the fan motor 9, a swirling airflow is generated by the action of the crossflow fan, and the indoor air is sucked into the casing 1 through the suction port 18 by the swirling airflow. Be done. The sucked indoor air passes through the heat exchanger 6 and flows to the downstream side thereof, but at this time, heat is exchanged by the heat exchanger 6 to become conditioned air. Then, the conditioned air traverses the inside of the fan rotor 8 and then gradually changes the flow direction along the scroll portion 21 to the front side, and is blown out into the room again from the air outlet 19. Figure 1 on the top plate 3a
The notch 26 is provided as shown in FIG.
Since 6 is closed by the lid portion 14a after the pipe connection work is completed as described above, air is not sucked into the casing 1 through the cutout portion 26. Therefore, the flow path of the intake air is not disturbed, and the provision of the cutout portion 26 does not reduce the air conditioning performance.

Next, the pipe connecting work will be described. Also in the indoor unit of the above embodiment, it is necessary to connect the auxiliary pipe 12 and the connecting pipe 22 before attaching the front grill 2. The procedure for this connection is as shown in FIGS. 3A to 3C, but since this is the same as in the conventional example, the description thereof is omitted here. However, what is different from the conventional example is that the notch 26 is provided on the front surface side of the top plate 3a. In this indoor unit, the space above the top plate 3a and the space in front of the heat exchanger 6 that communicate with each other by the notch 26 are used as the piping work space S, so that the existing space can be effectively used without increasing the size of the device. By using it, the pipe connection work can be facilitated. That is, as shown in FIG. 2, in this indoor unit, the upper heat exchanger 6a constituting the heat exchanger 6 is provided so that the upper end is inclined so that the upper end thereof is located on the back side. Therefore, a relatively wide space is formed in the casing 1 in front of the upper heat exchanger 6a. Since the top plate 3a is provided with the notch 26 on the front side with respect to the upper end of the upper heat exchanger 6a, the notch 26 leads to the top of the top plate 3a provided with the pipe connection part 27 and the casing. 1 The inside will communicate. This communicating space is a portion sandwiched between the alternate long and short dash line A and the alternate long and short dash line C in FIG. 2. However, since the upper heat exchanger 6a is inclined as described above, a large opening is formed on the front side. It has been done. And the two dashed lines A,
Since tools etc. are inserted from the front between C,
Two spanners can be easily attached, and therefore, it is suitable as a work space S for connecting pipes. In the figure, the work space in the conventional example is shown by the two single-dotted lines A and B. How large is the space compared to this, and how wide the front surface is and is suitable for the piping work space? Is clear. Further, not only the front surface is wide open, but also a wide space is secured in the vertical direction as the work space S, so that the heat insulating coating work by the heat insulating cylinder 23 becomes easy. Top plate 3a
The communication between the space above and the inside of the casing 1 is blocked by closing the notch 26 with the lid 14a. Therefore, when the air conditioner is operating, the air flows through the front grill 2 as described above.
Since the air is sucked only from the suction port 18 formed in, the air conditioning performance is not deteriorated by the notch 26. Moreover, since the lid portion 14a is formed integrally with the pipe cover 14, it is possible to avoid cost increase due to increase in parts and complication of work due to increase in installation man-hours.

The specific embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications can be carried out within the scope of the present invention. For example, as shown in FIG.
Although the connection work is carried out by pulling out 2 and 22 to the front, the connection work may be carried out without pulling out if the work space S is sufficient. Further, the internal configuration of the indoor unit is an example, and, for example, a blower fan other than the cross flow fan may be used, and if a sufficient working space can be secured in the front, the heat exchanger whose upper side is not inclined May be used.

[0021]

In the wall-embedded air conditioner according to the first aspect, the front of the heat exchanger is effectively used as a working space for connecting pipes. Therefore, it is possible to secure a sufficient work space without increasing the size of the device, and thus it becomes possible to facilitate the piping work while meeting the demand for compactness.

According to the wall-insertion type air conditioner of claim 2,
Since the notch can be closed by the lid after the pipe connection work is completed, even if a large notch is provided, the flow path of the intake air is not disturbed. Therefore, the pipe connection work can be facilitated without deteriorating the air conditioning performance.

Further, in the wall-embedded air conditioner according to a third aspect of the present invention, a part of the piping cover provided in advance is used as the lid portion. Therefore, it is possible to avoid an increase in cost and an increase in man-hours for installation without increasing the number of parts.

In the wall-embedded air conditioner according to the fourth aspect, the heat insulation coating can be performed by utilizing the expanded work space.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an indoor unit in an embodiment of a wall-embedded air conditioner of the present invention.

FIG. 2 is a transparent side view of the indoor unit.

FIG. 3 is an explanatory diagram showing a piping work procedure of the air conditioner.

FIG. 4 is a schematic front view of an indoor unit of a conventional air conditioner.

[Explanation of symbols]

 1 Casing 2 Front Grill 6 Heat Exchanger 12 Auxiliary Piping 14 Piping Cover 18 Suction Port 22 Communication Piping 26 Cutout 27 Piping Connection 30 Wall S Working Space

Claims (4)

[Claims] 1. A suction port (18) is provided in a removable front plate (2) of an indoor unit casing (1) embedded in a wall (30), and is located on the back side of this suction port (18). A heat exchanger (6) is provided in the casing (1), and an auxiliary pipe (12) connected to the heat exchanger (6) is connected to the auxiliary pipe (12) and the outdoor unit. Communication piping (2
In a wall-embedded air conditioner provided with a pipe connection portion (27) connected to 2) on the top plate (3a) of the casing (1), the pipe connection portion (27) is provided at a position higher than the upper end of the heat exchanger (6). The top plate (3a) on the front side is provided with a cutout portion (26) for communicating the upper side of the top plate (3a) with the inside of the casing (1), and the heat exchanger (through the cutout portion (26). 6)
A wall-embedded air conditioner characterized in that the front side of is used as a work space (S) when connecting the auxiliary pipe (12) and the communication pipe (22). 2. A lid (14a) for closing the communication between the upper portion of the top plate (3a) and the inside of the casing (1) by closing the cutout portion (26). 1 wall embedded air conditioner. 3. A pipe cover (14) for covering the pipe connecting portion (27) from the front side, and the pipe cover (14).
The wall-embedded air conditioner according to claim 2, further comprising: the lid portion (14a). 4. The wall-embedded air conditioner according to claim 1, wherein the pipe connection portion (27) is formed by heat-insulating the outer peripheral portion of the pipe connection portion.