JPH09145146A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure in which a leakage of drain water caused by corrosion of an installing material or the like is eliminated, component parts are stored in compact and a superior service may be attained. SOLUTION: An air blowing fan 13 and a heat exchanger 12 are assembled to a frame made of resin. The frame is covered by an outer fixing case member 60 comprised of a rear plate of metal sheet, a U-shaped side plate and a lower side plate. The case member is fitted to a wooden installing frame 4 so as to prevent drain water from dripping directly to the frame 4. Refrigerant pipes 31a, 31b are arranged under utilization of a space S enclosed by a lower side plate 53 and a slant mounted discharging port forming plate 38 above the lower side plate so as to improve a compact structure and its workability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in which an indoor unit is mounted so as to be embedded in a wall portion so that the aesthetic appearance is not deteriorated by the installation.

[0002]

2. Description of the Related Art In recent years, when a house or building is newly built, an indoor unit of an air conditioner of a type in which an indoor unit and an outdoor unit are separated is installed so as to be embedded in a wall portion of the room, and then installed on the outdoor unit side. Condensing unit consisting of a compressor and a condenser installed, and the heat exchanger unit on the indoor unit side are connected by a refrigerant pipe so that the indoor unit does not have a conspicuous protrusion inside the room by installation, Some ideas have been proposed to maintain aesthetics.

However, in this case, since the indoor unit is embedded in the wall and cannot be seen from the outside, the indoor unit has an interior such as a heat exchanger, a blower fan, and a pipe section through which a refrigerant flows. The structure was left bare and hidden by an outer case, which was rarely adopted.

[0004]

Therefore, particularly during operation, dew condensation occurs at the exposed pipe connection portion that is pulled out from the indoor unit side and connected to the refrigerant pipe from the outdoor unit side, which causes drain water. There was a problem that the inside was wet by dripping.

In addition, the piping is generally arranged so that it exists outside the heat exchanger or the blower fan. Therefore, a space for installing the pipe is required in addition to the structure of the heat exchanger or the blower fan, and the indoor unit is required. There are problems that the structure becomes large as a whole, problems that it is difficult to design for securing a space, and that the pipes are crushed when the indoor unit is installed because the structure is exposed.

The present invention has been made in view of the above points, and allows the internal structural parts of an indoor unit to be compactly housed so that the installation location can be installed so as not to get wet with drain water, and piping fixing work, etc. (EN) An air conditioner of a type embedded in a wall, which can enhance serviceability that can be performed easily.

[0007]

In order to achieve the above object, the invention of claim 1 is such that a heat exchanger and a blower fan are arranged in an air passage formed inside the main body, and the indoor air is blown by the blower fan. In an air conditioner in which an indoor unit that is sucked in from the front and discharged from the lower front is embedded in a wall, a back plate made of sheet metal or the like, a U-shaped side plate having top and right and left side faces, and a lower side plate Two exterior parts and a resin frame for mounting and supporting the indoor unit components such as the blower fan and the heat exchanger, and the indoor unit structure assembled on the frame is formed into a rectangular parallelepiped by the three exterior parts. An indoor unit exterior case body is formed so as to surround it, and the indoor unit protected by this indoor unit exterior case body is installed and fixed in an installation crate provided in a mounting opening of a wall portion.

According to the second aspect of the present invention, a drain pan disposed below the heat exchanger for receiving drain water, and an air outlet provided obliquely downward at a lower portion of the drain pan are provided. An outlet unit lower side plate that forms an outlet together with the drain pan bottom portion, and a refrigerant pipe on the outdoor unit side in a corner area surrounded by the outlet unit lower side plate and the lower side plate of the indoor unit exterior case body located thereunder. A refrigerant pipe on the heat exchanger side, which is connected to the pipe with the refrigerant pipe, is provided.

Further, in the invention of claim 3, the discharge port lower side plate is assembled to the lower portion of the drain pan so as to be detachable from the front side, and the lower surface side plate is also detachable from the front side. By removing and removing the drain pan, an opening is provided that is larger than the air discharge port and that enables refrigerant pipe piping connection work between the outdoor unit side and the indoor unit side from the front.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. The indoor unit 1 is, for example, as shown in FIG. 1, installed on a wall portion 3 of a portion remaining above a door 2 set in a room. Further, the wall portion 3 is provided with a mounting opening 10 for fitting the indoor unit 1 therein. The thickness of the wall portion 3 is larger than the depth dimension (side face width) of the indoor unit 1 of 150 mm, for example, 20 mm.
It is about 0 mm. 3L and 3R are the wall 3
It is a wall provided on both sides of. And actually the indoor unit 1
As shown in FIG. 3, is installed and fixed in a rectangular parallelepiped installation frame 4 which is fitted and fixed in the mounting opening 10.

The indoor unit 1 has an air suction port 6 for sucking indoor air in the front surface of a rectangular parallelepiped main body 5.
Is provided, and an air discharge port 7 through which the sucked air is heat-exchanged and discharged is formed on the lower side thereof with an opening area considerably smaller than that of the suction port 6. Reference numeral 8 is a grill plate in which a large number of slit holes 8b opening in the lateral direction are formed.
It is detachably attached to the front surface of the main body 5 to protect the air suction port 6 and the air discharge port 7.

Next, referring to FIGS. 2, 3 and 4, etc.,
The structure of the main body 5, the heat exchanger 12 installed in the main body 5, the cross-flow type blower fan 13, and the piping configuration of the refrigerant pipe 14 will be described. As shown in the exploded configuration diagram of FIG. 2, the heat exchange fan has a through-flow type blower fan 13 for sucking and discharging indoor air and a large number of heat radiating fins, and the heat transfer medium pipes are orthogonal to each other and pass through the heat transfer pipes while meandering vertically. A frame 15 made of resin for attaching and supporting the container 12
Is used. Supporting walls 17a and 17b are formed on both sides of a rear plate 16 for forming an air passage formed in a curved shape on a rear surface of the frame 15 so as to face each other. ) Shaft is the support wall 1
7a is supported by a semicircular cutout receiving portion 18 via a bearing 19 and is pressed from the front by a stopper 21, while the shaft on the other side (right side) is the shaft hole 2 of the support wall 17b.
It is inserted in 2 and is horizontally supported. Further, the fan motor 23 for rotating the blower fan 13 is housed and fixed from the front in the recess of the fan motor fixing portion 24 integrally formed outside the one side (right side) support wall 17b of the frame 15, and the motor fixing device 25 is also provided. It is supported by pressing so that it does not come out forward. A cushion rubber 26 for vibration isolation is inserted between the fan motor 21 and the blower fan 13. Also, the motor fixture 23 and the frame 15
In the upper space surrounded by the top surface 15a, an electric equipment box 10 for performing overall control of the electric system is attached and installed. Although not shown, a drain water pump for pumping drain water dropped from the heat exchanger 12 and discharging the drain water to the outside is arranged in the space below the motor fixture 23.

A blower fan 13 is attached to the frame 15.
After mounting, the heat exchanger 12, which is bent in a dogleg shape when viewed from the side, is attached to the front opening. At this time, the upper end of the heat exchanger 12 is brought into contact with the top wall 15a of the frame 15 and fixed with screws or the like as shown in FIG. Wall 17a,
It is attached by being fixed to 17b. Reference numeral 27 denotes a first filter having an air cleaning filter 28 attached to a part of the front surface of the heat exchanger 12, and further, a first filter 27 for air cleaning and a first filter so as to cover the entire front surface of the heat exchanger 12. Two filters 29 are provided.

Reference numeral 31 is a refrigerant pipe drawn from the heat exchanger 12, and two refrigerant pipes 31a and 31b having different sizes are passed through a heat insulating coating tube 32, each of which is a compressor or a compressor. A refrigeration cycle is formed by piping connection with a refrigerant pipe 33 extending from the outdoor unit side equipped with a condensation unit such as a condenser. At the time of pipe connection, the connection ends of the respective refrigerant pipes 31a and 31b are exposed from the coating tube 32 of the heat insulating material, and the two refrigerant pipes 33a and 33b from the outdoor unit side and the hexagonal connection mouthpiece 35 are used with a monkey wrench or the like. It is supposed to be tightened and connected. One feature of the present invention is that the pipe connecting work is easily performed, and details thereof will be described later.

Now, the blower 13 is operated and the sucked indoor air is cooled by the heat exchanger 12 and blown out into the room for cooling. At that time, moisture contained in the indoor air is cooled when passing through the heat exchanger 12. Because it is condensed and drops,
A drain pan 36 is attached to the lower portion of the heat exchanger 12 so as to receive the drain water. Here, the drain pan 36 is formed such that the upright drain pan rear wall 36b at the rear of the drain pan 36 faces the air passage forming plate 11 as shown in FIG. 3, and winds for disposing the heat exchanger 12 and the blower fan 13 therein. The passage 9 is used as one wall member that is formed together with the air passage forming plate 16. Further, the bottom wall is extended forward, and the extended bottom wall portion 36a is also used as a member for forming the air discharge port 7 together with a discharge port forming plate 38, which will be described later, which is inclinedly arranged on the lower side thereof. ing.

By the way, in the drain pan 36, an upwardly U-shaped frame side 40 is slanted downwardly and integrally formed so as to hang downwardly to form a first discharge port portion 41 which is opened obliquely downward. ing. That is, the discharge port portion 41 is formed so as to be surrounded by the hanging frame side 40 and the bottom wall of the drain pan 36. And again, this drain pan 36
A discharge port forming plate 38, which is another member that is also U-shaped upward, is assembled in the same manner so as to face obliquely downward. That is,
There are mounting ear pieces 42, 42 that are bent outward at both ends of the frame side of the drain pan 36, and the mounting ear pieces 43, 43 at both ends of the discharge port forming plate 42 are fixed thereto by screws 44, 44 and the like. To do. Then, as shown in FIG. 4, the bottom surface portion of the discharge port forming plate 38 extends flush with the front surface of the bottom surface portion of the frame side 40, and the extended bottom wall portion 36 of the above-described upper drain pan 36 is provided.
A second discharge port portion 45 is formed so as to be opposed to a and is open in an obliquely downward direction and is connected to the first discharge port portion 41.

Thus, as shown in FIG. 4, the air duct forming plate 1
An upper U-shaped frame side 40 below the drain pan 36 and a discharge port forming plate 38, which is a separate member, are connected to the tip of the lower end of the drain pan 36, and the air discharge port 7 is formed by the drain pan 36 bottom wall. 4
Reference numeral 7 denotes an air flow direction plate that is provided in the air discharge port so as to be rotatable in the horizontal direction and changes the air discharge direction.

Thus, the frame 15 made of resin is used as a support base, and the blower fan 13, the heat exchanger 12, the drain pan 36 and the air discharge port 7 are formed therein, and the frame side 4 is U-shaped.
0 and the discharge port forming plate 38 are mounted and supported, and the first and second
When the filters 29 and 27 of 1 are attached and the main body of the indoor unit is formed, this is covered with the case body.

Therefore, a back plate 51 made of sheet metal, a U-shaped side plate 52 in which the sheet metal is also bent in a U shape, and the top surface 52a and the left and right side surfaces 52b are integrally formed, and the lower side plate made of sheet metal. 53 and 53 are used. A pair of locking recesses 54, 54 are formed on the upper side of the inner surface of the back plate 51 on the left and right, and the frame 15 is formed corresponding to the locking recesses 54, 54.
Locking protrusions 55, 55 (see FIG. 3) are provided on the back of the. Therefore, the frame 15 is temporarily fixed by the locking projections 55, 55 and the locking recesses 54, 54, and securely fixed by screws, and the frame 15 is first attached and fixed to the back plate 51. Next, the U-shaped side plate 52 is attached to the back plate 51 so as to cover the resin frame 15. Mounting pieces 56, 56 are bent and formed on both sides of the back plate 51.
6, 56 inside the left and right side surfaces 52b of the U-shaped side plate 52,
The U-shaped side plate 52 is securely attached and fixed to the back plate 51 by fitting 52b together and fixing it with screws. Finally, the lower surface side plate 53 is finally attached to the U-shaped side plate 52 so as to hide the bottom of the frame 15. The left and right front lower ends of the U-shaped side plate 52 have mounting ear pieces 5 that are bent inward.
There are 7, 57, and the mounting ear pieces 57, 57 and the lower side plate 5
The lower side plate 53 can be attached and fixed to the U-shaped side plate 52 so that the lower side plate 53 can be attached to and removed from the front side by fastening the mounting ears 58, 58 of the No. 3 side together with the mounting screws 59, 59. There is.

Thus, the back plate 51, the U-shaped side plate 52,
An exterior case body 60 that covers and surrounds the indoor unit body in a rectangular parallelepiped shape excluding the front surface by the three exterior components of the lower side plate 53 is assembled and formed. Finally, the exterior case body 60 is fitted into the wooden installation frame 4 and firmly installed and fixed in the wall portion 3. After installation, the back surface of the indoor unit 1 is exposed so that the back side is not exposed. The back plate 51 of the exterior case body 60 is located on the back side of the indoor unit 1, and the back plate 51 forms a substantially flat surface. Therefore, there is an advantage that the wall can be easily installed.

The structure after installation is as shown in FIG. 3, and as a result, the space portion S is formed at the corner portion by the lower surface side plate 53 and the discharge port forming plate 38 inclinedly installed above it. Utilizing this space S, two large and small refrigerant tubes 31 with different thicknesses drawn from the heat exchanger 12 are drawn here.
It is arranged so that a and 31b are pushed in. By thus covering the indoor unit with the outer case body 60, the drain water generated by dew condensation on the refrigerant pipe drops on the metal lower side plate 53 of the outer case body 60, and the wooden installation covered with it is installed. Since the upper surface 4b of the frame 4 does not droop directly, it is possible to prevent the installation frame 4 from rotting and to extend the installation life.

Further, when the wall portion of the indoor unit 1 is embedded, the refrigerant pipe 31
Is connected to the refrigerant pipe 33 on the outdoor unit side.
At this time, first, the mounting screws 59, 59 are removed to remove the lower surface side plate 53.
Pull out to the front and remove. Next, the set screws 44, 44 are removed to disassemble the discharge port forming plate 38 from the drain pan 36,
Remove from the outer case body 60. Then, as shown in FIG. 4, since these two parts 53 and 38 are eliminated, an opening 62 wider than the air discharge port 7 is formed and the refrigerant pipes 31a and 31b are exposed. Therefore, the refrigerant pipes 31a and 31b are pulled out forward, and the monkey spanner 63 is used to cool the outdoor unit side refrigerant pipes 33a and 3b.
The work of screwing and fixing with 3b and the hexagonal connection mouthpiece 35 can be easily performed. In addition, the refrigerant pipe 3 from the outdoor unit side
3a and 33b are one through holes 6 provided in the back plate 51.
The inside of the indoor unit 1 enters from 4. Further, the other hole portion 65 (see FIG. 2) provided in the back plate 51 is a drain for pumping and draining drain water introduced from the drain pan 36 by a drain water pump (not shown) provided in the indoor unit 1 and drained. It is a through hole for pulling out the water drainage hose.

After connecting the refrigerant pipes, the lower side plate 53 is attached as it is, and then the discharge port forming plate 38 is attached and fixed so as to press the refrigerant pipes 31a and 31b.
1b is stored in the space portion S of the corner portion surrounded by the lower surface side plate 53 and the discharge port forming plate 38. Conventionally, the piping was formed only by pushing it in by hand, so the formability of the pipe was poor, but in this configuration, since the pressing by the discharge port forming plate 38 is applied, the formability of the pipe is improved and the pipe can be fixed in a proper position. Furthermore, since the space for installing pipes is secured inside, the design specifications do not require a separate space for installing pipes as in the past, and a simple structure and cost can be reduced, and a compact structure can be achieved. As a result, the overall workability including piping work is greatly improved.

Further, such a piping portion is provided in the outer case body 60.
Since it is protected by, the conventional piping can be satisfactorily installed without crushing the piping portion with the installation frame 4 which tends to occur when installing the indoor unit where the piping is exposed.

[0025]

As described above, according to the invention of claim 1,
Even if it is an indoor unit that is embedded in a wall, when components such as a blower fan, heat exchanger, and piping are assembled into a resin frame to form an indoor unit, these components are not exposed and are made of multiple sheet metal. Since the outer case is formed by enclosing it in the shape of a rectangular parallelepiped with the outer plate, and the mounting method is such that it is fitted inside the installation wooden frame on the wall side, the drain water generated in the piping portion first drops is the wooden frame. Since it does not drip directly on the wooden frame unlike the conventional case because it is received by the exterior case that covers the wooden frame, it does not spoil the wooden frame. You can prevent things such as hygiene. Also, since the piping is protected by the outer case,
There is no need to worry about being crushed by hitting the wooden frame when fitting, and installation work can be performed safely and stably, improving workability.

Further, according to the invention of claim 2, the refrigerant pipe drawn out from the heat exchanger for connecting the outdoor unit side and the indoor unit side to each other by piping is formed in the lower portion of the heat exchanger to form the air discharge port. Since it is arranged by using the space surrounded by the plate and the lower side plate of the outer case below the plate, it is possible to secure the space for piping installation inside without separately designing,
As well as being able to store pipes in an orderly manner,
Can have a compact structure.

Further, according to the third aspect of the invention, by removing the air discharge port forming plate and the lower side plate, an opening can be obtained in which the refrigerant pipe can be pulled out and a connecting tool such as a spanner can be easily inserted. It becomes very easy to fix the pipe connection with the refrigerant pipe from the machine side. Further, after connection, since the pipe portion can be fixed so as to be pressed and surrounded by the air discharge port forming plate and the lower side plate at a predetermined position, it is easier to form the pipe than in the conventional state where it is simply pushed by hand. It is possible to obtain effects such as improved serviceability.

[0028]

[Brief description of the drawings]

FIG. 1 is a structural perspective view illustrating how an indoor unit of the present invention is embedded in a wall.

FIG. 2 is an exploded perspective view of components forming the indoor unit of the present invention.

FIG. 3 is a vertical cross-sectional view of the indoor unit of the present invention embedded and installed in a wall.

FIG. 4 is a vertical cross-sectional view of the indoor unit of the present invention showing how service work such as pipe connection is performed.

[Explanation of symbols]

 1 Indoor Unit 3 Wall 4 Wooden Installation Frame 7 Air Discharge Port 12 Heat Exchanger 13 Blower 15 Resin Frame 31 Refrigerant Pipe 36 Drain Pan 40 Discharge Port Forming Plate 51 Back Plate 52 U-Shaped Side Plate 53 Lower Side Plate 60 Exterior Case body 62 Opening part 63 Monkey spanner

Claims (3)

[Claims] 1. A heat exchanger and a blower fan are arranged in an air passage formed inside a main body, and the blower fan sucks indoor air from the front side and discharges it from the lower front side. In the harmony device, a back plate made of sheet metal or the like, three exterior parts including a U-shaped side plate having a top surface and left and right side surfaces and a bottom side plate, and indoor unit components such as the blower fan and the heat exchanger are provided. A resin frame for mounting and supporting, and an indoor unit exterior case body is formed by surrounding the indoor unit structure body assembled on the frame with the three exterior components in a rectangular parallelepiped shape, and protected by this indoor unit exterior case body. An air conditioner characterized in that the above indoor unit is installed and fixed in a wooden frame for installation provided in a mounting opening of a wall portion. 2. A drain pan disposed at a lower portion of the heat exchanger for receiving drain water, and an air discharge port, which is provided at a lower portion of the drain pan and is inclined forward, and is opened obliquely downward together with the drain pan bottom portion. A heat exchanger connected to the outdoor unit side refrigerant pipe in a corner area surrounded by the discharge port lower side plate and the lower surface side plate of the indoor unit exterior case body located below the discharge port lower side plate. The air conditioner according to claim 1, wherein a refrigerant pipe on the exchanger side is provided. 3. The discharge port lower side plate is attached to a lower portion of the drain pan so as to be detachable from the front side, and the lower surface side plate has an assembling structure that is also detachable from the front side.
The opening portion that is larger than the air discharge port, and an opening portion that allows a refrigerant pipe connection work between the outdoor unit side and the indoor unit side from the front is obtained. The air conditioner described.