JPH11257686A - Air-conditioning equipment and ventilation unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide inexpensive and reliable air-conditioning equipment that has simple structure without separately providing a damper and a ventilation passage in a body, can reduce noise on ventilation, and can obtain sufficient amount of ventilation wind. SOLUTION: An air circulation cover 9 is mounted to a hole 2a for passing piping being provided on the side and lower surfaces of the corner part of a bottom frame 2 of an indoor unit 1. One end of a wall pipe 4 is connected near the air circulation cover 9 on the rear surface of the bottom frame 2. Furthermore, the other end of the wall pipe 4 is connected to a ventilation unit 10. Indoor air is discharged outside a room via the hole 2a for passing piping of the bottom frame 2 of the indoor unit 1 and the wall pipe 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a ventilation function and a ventilation unit.

[0002]

2. Description of the Related Art A conventional air conditioner is shown in FIG. 6 (see Japanese Patent Application Laid-Open No. 61-240040). This air conditioner includes a casing 60, a heat exchanger 61 disposed in the casing 60, and a blower fan 62 disposed in the casing 60 on the rear side of the heat exchanger 61. The air conditioner is installed such that the entire rear side of the casing 60 passes through a hole 70 a provided in the wall 70. The air conditioner includes a first damper 63 rotatably provided near an air outlet 60a in a casing 60, and an outdoor opening of a ventilation passage 65 for guiding air blown from a blower fan 62 to the outside. And a second damper 64 that is rotatably provided.

[0003] In the air conditioner having the above configuration, during the cooling / heating operation, the first and second dampers 63 and 64 are set to the positions indicated by solid lines, the entrance side and the outdoor side of the ventilation passage 65 are closed, and the blower fan 62 controls the front side. The air sucked in from the side via the heat exchanger 61 is blown out from the outlet 60a toward the lower front. On the other hand, during the ventilation operation, the first and second dampers 63, 63,
64 is set to the position indicated by the two-dot chain line, the air outlet 60a is closed, the inlet side of the ventilation passage 65 and the outdoor side are opened, and the blower fan 62
As a result, the air sucked from the front side through the heat exchanger 61 is discharged to the outside of the room through the opening on the rear side through the ventilation passage 65. As described above, in the air conditioner, the ventilation passage 6 provided in the main body is generally used without using the pipe through hole provided in the wall.
5 is used for exhaust.

[0004]

The air conditioner can easily exhaust indoor air. However, since the indoor air passes through the heat exchanger 61 and the ventilation passage 65 in the air conditioner, the air conditioner is large. There is a problem that ventilation resistance is generated, noise is generated, and ventilation is insufficient. In addition, since there are many movable parts such as the first and second dampers 63 and 64 in the air conditioner, the casing becomes large, the structure becomes complicated, the cost increases, and the reliability decreases. . Further, in the air conditioner described above, since the indoor air is exhausted outside through the heat exchanger 61 during the ventilation operation, the air conditioning operation must be stopped, and there is a problem that the comfort is impaired.

Accordingly, an object of the present invention is to provide a simple structure without separately providing a damper and a ventilation passage in a main body, to reduce noise during ventilation, to obtain a sufficient ventilation air volume, and to perform air-conditioning operation and ventilation operation. An object of the present invention is to provide a low-cost and highly reliable air conditioner that can be performed at the same time.

[0006]

According to an aspect of the present invention, there is provided an air conditioner comprising: an indoor unit having a casing provided with a pipe through hole; and an air unit attached to the pipe through hole of the casing. A circulation cover, provided on the rear surface side of the casing near the pipe through hole to which the air circulation cover is attached, a wall pipe penetrating the wall, and a ventilation unit connected to the wall pipe. Features.

[0007] According to the air conditioner of the first aspect, the casing of the indoor unit normally removes the pipe from the casing when the pipe through hole cannot be provided in the wall on the back side of the casing. The casing is provided with a through hole for piping along the side and underside of the casing. The air circulation cover is attached to this pipe passage hole. The pipe through hole to which the air circulation cover is attached is a suction port for sucking room air into the casing. When the ventilation unit sucks indoor air and exhausts the air outside the room, for example, the room air enters the casing from the air flow cover of the pipe flow hole, and then enters the vicinity of the pipe flow hole to which the air flow cover is attached. It is discharged outside through a ventilation unit through a wall pipe provided on the rear surface side of the casing. In addition, outside air may be sucked in by the ventilation unit, and may be sucked into the room through the inside of the wall pipe and the pipe passage hole of the casing of the indoor unit. Thus, without providing a damper or a ventilation passage separately in the indoor unit, the pipe through hole provided in the casing of the indoor unit can be replaced by a ventilation inlet.
(Or an outlet), a wall pipe for piping can be used for both a piping passage and a ventilation passage. Therefore, with a simple structure, noise during ventilation can be reduced, and a low-cost and highly reliable air conditioner that can obtain a sufficient ventilation air volume can be realized. Further, in the configuration of the air conditioner, the air-conditioning operation and the ventilation operation can be performed at the same time, and the indoor comfort can be improved.

[0008] The air conditioner according to the second aspect is the first aspect.
The air conditioner according to the above, further comprising a partition plate disposed in the wall pipe and separating a pipe passage and a ventilation passage.

According to the air conditioner of the second aspect, the pipe passage is reliably separated from the pipe passage and the ventilation passage by the partition plate in the wall pipe, thereby securing the pipe passage.
A ventilation passage that guides air from inside the casing to the ventilation unit (or guides air in the opposite direction) can be secured. Therefore, a ventilation passage can be formed in a commonly used wall pipe for piping, and a sufficient amount of ventilation air can be reliably obtained.

[0010] The air conditioner according to the third aspect is characterized by the first aspect.
Or in the air conditioner of 2, the ventilation unit is:
A ventilation passage portion connected to the ventilation passage of the wall pipe, a piping arrangement portion in which a part of a pipe drawn from the wall pipe is arranged to be adjacent to the ventilation passage portion, A suction fan section arranged on one of the upper and lower sides or on the left and right sides with respect to the pipe arrangement section,
A passage for guiding air from the ventilation passage section to the suction fan section.

According to the air conditioner of the third aspect, the suction fan of the ventilation unit allows the air to pass through the ventilation passage from the wall pipe and the passage for guiding air from the ventilation passage to the suction fan. And sucks the air out of the room through the suction fan. Since the suction fan unit is arranged on one of the upper and lower sides or the left and right sides of the ventilation passage part and the piping arrangement part, it is possible to reduce the protrusion of the ventilation unit with respect to the wall surface, and this ventilation unit can be used even in a narrow place where there is no room in the installation space. Can be attached, and the degree of freedom of installation can be expanded.

According to a fourth aspect of the present invention, there is provided an air conditioner, comprising: an indoor unit having a casing provided with a pipe through-hole; and a pipe penetrating the wall from the pipe through-hole of the casing along a wall surface. And a decorative cover having an air flow opening, and one end connected to the portion covered by the decorative cover, penetrating the wall, and passing through the pipe, and a wall pipe passing through the other end of the wall pipe. And a ventilation unit to be connected.

[0013] According to the air conditioner of the fourth aspect, the casing of the indoor unit is usually provided with a pipe from the casing when the pipe through hole cannot be formed in the wall on the back side of the casing. The casing is provided with a through hole for piping along the side and underside of the casing. The place where the piping arranged along the wall surface from the piping through hole penetrates the wall is covered with the decorative cover. When, for example, indoor air is sucked in by the ventilation unit and exhausted to the outside, the room air is exhausted to the outside through the ventilation pipe through the air pipe from the air circulation port of the decorative cover. In addition, outside air may be sucked into the room through the wall pipe by sucking outside air by the ventilation unit. In this way, without separately providing a damper or a ventilation passage in the indoor unit, the air flow opening of the decorative cover can be used as a suction inlet (or outlet) for ventilation, and a wall pipe for piping can be used for both the piping passage and the ventilation passage. .
Therefore, with a simple structure, the noise during ventilation can be reduced,
It is possible to realize a low-cost and highly reliable air conditioner that can provide a sufficient ventilation air volume. Further, in the configuration of the air conditioner, the air-conditioning operation and the ventilation operation can be performed at the same time, and the indoor comfort can be improved.

According to a fifth aspect of the present invention, there is provided a ventilation unit, wherein the ventilation passage portion and the piping arrangement portion are arranged adjacent to each other, and one of the upper and lower sides or the left and right sides of the ventilation passage portion and the piping arrangement portion is arranged. It is characterized by having a suction fan section and a passage for guiding air from the ventilation passage section to the suction fan section.

According to the ventilation unit of the fifth aspect, the suction fan of the ventilation unit allows the air to pass through the ventilation passage from the wall pipe and the passage for guiding the air from the ventilation passage to the suction fan. The air is sucked and the sucked air is blown out of the room from the suction fan section. Since the suction fan unit is arranged on one of the upper and lower sides or the left and right sides of the ventilation passage part and the piping arrangement part, it is possible to reduce the protrusion of the ventilation unit with respect to the wall surface, and this ventilation unit can be used even in a narrow place where there is no room in the installation space. Can be attached, and the degree of freedom of installation can be expanded.

According to a sixth aspect of the present invention, in the ventilation unit of the fifth aspect, the ventilation unit is disposed in a passage for guiding air from the ventilation passage to the suction fan unit, and is provided between the ventilation passage and the suction fan unit. It has a check valve that allows only air flow.

According to the ventilation unit of the sixth aspect, when the suction fan section is stopped, suction is performed from the ventilation passage section by a check valve disposed in a passage for guiding air from the ventilation passage section to the suction fan section. Since only the flow of air to the fan is allowed, outside air is prevented from flowing into the room when the ventilation operation is stopped.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an air conditioner and a ventilation unit according to the present invention will be described in detail with reference to the illustrated embodiments.

(First Embodiment) FIG. 1 is an exploded perspective view of an indoor unit and a ventilation unit of an air conditioner according to a first embodiment of the present invention. The indoor unit 1 of the air conditioner is provided with air through piping through holes 2a (only one of the side surfaces is shown in FIG. 1) provided on the side surface near the lower right corner of the bottom frame 2 as a casing and on the lower surface. The distribution cover 9 is attached. The air circulation cover 9 is provided with the pipe through hole 2.
It has a lattice shape so that a fingertip or the like does not enter the bottom frame 2 from a. A wall (not shown) near the corner on the back side of the bottom frame 2 is provided with a pipe through hole, and a wall pipe 4 having a length substantially equal to the entire length of the pipe through hole is inserted into the pipe through hole in the wall. I do. The wall cover 3 is attached to the indoor side of the wall pipe 4, and the wall pipe 4 is connected to the back side of the bottom frame 2. Then, in the wall pipe 4, a partition plate 6 for partitioning a pipe passage and a ventilation passage described later is arranged. The indoor unit 1
The air flow cover 9 may be attached to the pipe through hole (not shown) near the lower left corner, instead of the pipe through hole 2a near the lower right corner of the bottom frame 2.

Further, on the outdoor side, a mounting plate 5 having a U-shaped notch 5a on the lower side is fixed to a wall such that the outdoor side of the wall pipe 4, that is, the pipe through hole is fitted to the notch 5a. . The bell mouth part 1 is attached to the mounting plate 5.
1. A ventilation unit 10 having an AC motor 12, a printed circuit board 13, a scroll horizontal member 14, a damper 15, a first scroll member 16, a turbo fan 17, a second scroll member 18, and a casing 19 is attached. Then, the outside of the wall pipe 4 is connected to the bell mouth portion 11 of the ventilation unit 10 through the guide path 7 and the seal ring 8.
Connect to

Hereinafter, the ventilation unit 10 will be described with reference to an enlarged exploded perspective view of FIG. The bell mouth portion 11 includes a first plate portion 11a attached to the mounting plate 5 (shown in FIG. 1) and a side substantially perpendicular to the lower side of the first plate portion 11a and opposite to the mounting plate 5. The second plate portion 11b extending to
A third plate portion 11c extending substantially parallel to the first plate portion 11a and on a side opposite to the first plate portion 11a from a side of a tip of the second plate portion 11b, and a lower side of the third plate portion 11c. And a bottom (not shown) extending substantially parallel to the second plate 11b and opposite to the second plate 11b from the side of the first plate 11a, the second plate 11b, and the third plate 11b.
The plate portion 11c and the side plates 11d, 1 provided on both sides of the bottom portion.
1e. A circular hole 21 is provided in the third plate portion 11c. A substantially rectangular hole 22 (shown by a hatched portion in FIG. 2) is provided near the third plate portion 11c below the side plate 11d, and an inner peripheral edge is curved inward above the side plate 11d. A round hole 23 is provided. Hole 2 in side plate 11d
2 is provided with a damper 15 as a check valve. On the other hand, the side plate 11e is provided with a circular hole 26 having a smaller diameter than the circular hole 23 at a position facing the circular hole 23 of the side plate 11d.

At the position surrounded by the first plate 11a, the second plate 11b, the side plate 11d, and the side plate 11e in the bell mouth 11, a first scroll member 16 made of styrene foam having a U-shaped cross section is provided. , The first scroll member 1
6 is arranged such that the bottom of the U-shape is in contact with the first plate portion 11a. A part of the turbo fan 17 is arranged in the first scroll member 16, and the rotation shaft 1 of the AC motor 12 is
2a is fitted into the fitting hole 17a of the turbo fan 17 from the outside through the hole 26 of the side plate 11e,
The rotating shaft 12a of the AC motor 12 on the opposite side of the C motor 12
A nut 27 is screwed into the rotating shaft 12 of the AC motor 12.
The turbo fan 17 is fixed to a. In addition, the AC
The motor 12 is fixed to the side plate 11e of the bell mouth part 11. A printed circuit board 13 for controlling the AC motor 12 is mounted below the side plate 11e to which the AC motor 12 is fixed. Further, the side plate 1 of the bell mouth portion 11 is provided.
Between 1d and 11e, a second scroll member 18 made of styrene foam having a curved upper side and a concave lower side is arranged so as to cover the turbo fan 17. A substantially rectangular opening 24 is formed in the lower concave portion of the second scroll member 18.
(Shown by hatching in FIG. 2). Further, the scroll horizontal member 14 made of styrofoam is placed so as to cover the side plate 11d side of the bell mouth part 11.
Attached to. And the bell mouth part 11, A
C motor 12, printed circuit board 13, scroll horizontal member 1
4, the damper 15, the first scroll member 16, the turbo fan 17, and the second scroll member
Covered by. The casing 19 has a grill 25 at a position facing the opening 24 of the second scroll member 18.
Is provided.

The bell mouth 11 is connected to the taxiway 7 (FIG. 1).
(Shown in FIG. 3) are connected to each other by a passage passing through the circular hole 21 of the third plate portion 11c, the hole 22 of the side plate 11d, the space between the scroll horizontal member 14 and the side plate 11d, and the circular hole 23 of the side plate 11d.
Air is guided from the taxiway 7 to the turbo fan 17.

In the ventilation unit 10, between the installed wall surface and the second plate part 11 c of the bell mouth part 11,
A space S having a guideway 7 as a ventilation passage portion and a pipe arrangement portion in which a part of a pipe drawn out of the wall pipe 4 so as to be adjacent to the guideway 7 is arranged without interfering with the ventilation unit 10. Is provided.

FIG. 3 shows a horizontal section of the wall pipe 4, partition plate 6, and guide path 7 shown in FIG.
As shown in FIG. 3, a pipe through hole 40 provided in a wall 40 is provided.
The wall pipe 4 is inserted into a, and the pipes pass through one pipe passage 30 partitioned by the partition plate 6 in the wall pipe 4. On the other hand, the front end portion 7a of the guideway 7 is inserted into the outdoor opening of the other ventilation passage 20 in the wall pipe 4, and the rear end of the guideway 7 is connected to the ventilation unit 1 shown in FIG.
The bell mouth portion 11 is connected to the circular hole 21 of the third plate portion 11c. The guiding path 7 includes an intermediate portion 7b having a shape obtained by cutting a cylinder obliquely with respect to an axis, a front end portion 7a having a half-moon cross section on the front end side of the intermediate portion 7b, and And a cylindrical portion 7c. Cylindrical part 7c of the guideway 7
A flange portion 7d extending radially outward is provided at an end of the base member, and a seal ring 8 is attached between the flange portion 7d and the third plate portion 11c of the bell mouth portion 11, so that the flange portion 7d, the third plate portion 11c, Sealed so that air is not sucked in from between.

FIG. 4 is a sectional view taken along the line IV-IV shown in FIG. 1, and the ventilation passage 20 and the piping passage 30 are separated by the partition plate 6 in the wall pipe 4. In addition, in the pipe passage 30 in the wall pipe 4, the inside / outside connection line 3 is provided.
2 and refrigerant pipes 33 and 35 wrapped in heat insulating materials 34 and 36 and a control signal line 37. The control signal line 37
Are a control unit (not shown) of the indoor unit 1 and FIGS.
And a printed circuit board 13 shown in FIG. Thus,
The refrigerant pipe 33 that has passed through the wall pipe 4 from the indoor side,
35 and a control signal line 37 are connected to an outdoor unit (not shown) through a piping arrangement portion of the ventilation unit 10. The distal end 7a of the guideway 7 having the flange 7d is inserted into the ventilation passage 20 of the wall pipe 4.

In the air conditioner having the above configuration, the AC motor 12 of the ventilation unit 10 shown in FIG. 2 is rotated by a control signal from a control unit (not shown) of the indoor unit 1 shown in FIG. When the air conditioner is driven to rotate, the indoor air flows through the pipe through hole 1 in the bottom frame 2 of the indoor unit 1.
The air enters the lower corner portion of the bottom frame 2 through the air circulation covers 9, 9 attached to a. The room air entering the bottom frame 2 passes through the ventilation passage 20 and the guideway 7 shown in FIG. 3 partitioned by the partition plate 6 in the wall pipe 4 and the bell mouth portion of the ventilation unit 10 shown in FIG. 11
Of the bell mouth portion 11 through the circular hole 21 of FIG. The air that has entered the bell mouth portion 11 passes through the hole 22 in which the lower damper 15 of the side plate 11 d of the bell mouth portion 11 is attached to the passage between the side plate 11 d and the scroll horizontal member 14. enter. Then, the bell mouth part 1
The air is sucked into the turbo fan 17 from the circular hole 23 of the first side plate 11d. The air blown out from the turbo fan 17 is discharged from the grill 25 of the casing 19 to the outside through the opening 24 of the second scroll member 18. The damper 15 is connected to the AC motor 12 of the ventilation unit 10.
When the air conditioner stops, air from outside is prevented from flowing back into the room.

Therefore, the wall pipe 4 for piping is used as a piping passage and a ventilation passage by using a piping through hole provided in the bottom frame 2 of the indoor unit 1 without separately providing a damper and a ventilation passage in the indoor unit. It can be used together, has a simple structure, can reduce noise during ventilation, and can realize a low-cost and highly reliable air conditioner that can obtain a sufficient ventilation air volume. In addition, ventilation can be performed at the same time as the air-conditioning operation, and the indoor comfort can be improved.

As shown in FIG. 3, the inside of the wall pipe 4 is reliably separated from the pipe passage 30 and the ventilation passage 20 by the partition plate 6, so that the pipe passage is secured and the bottom frame shown in FIG. It is possible to secure a ventilation passage connecting the inside 2 and the ventilation unit 10, and to form a ventilation passage in a commonly used wall pipe for piping, so that a sufficient amount of ventilation air can be reliably obtained.

The turbo fan 17 is connected to a ventilation passage section.
Since it is arranged above the (guidance path 7) and the piping arrangement part, the protrusion of the ventilation unit 10 against the wall surface can be reduced,
This ventilation unit 1 can be used even in tight places where there is no room for installation space.
0 can be attached, and the degree of freedom of installation can be expanded.

When the turbo fan 17 of the ventilation unit 10 is stopped, only the flow of air from the room to the outside is allowed by the damper 15 arranged in the passage for guiding the air from the guide path 7 to the turbo fan 17. Thus, it is possible to prevent outside air from flowing into the room.

(Second Embodiment) FIG. 5 is an exploded perspective view of an indoor unit of an air conditioner according to a second embodiment of the present invention. This air conditioner has the same configuration as that of the air conditioner of the first embodiment except for the indoor unit side.
Referring to FIG.

In the above air conditioner, the pipe 41 extends from the pipe through hole 2a provided on the lower right corner of the bottom frame 2 of the indoor unit 1 to the pipe through hole (not shown) along the wall surface. 1, and connected to an outdoor unit (not shown) outside the wall pipe 4 through a pipe passage partitioned by a partition plate 6 in the wall pipe 4 inserted into the pipe through hole as in FIG. You. And
The indoor side of the wall pipe 4 is covered with a decorative cover 42. The decorative cover 42 is provided with an air circulation port 43 composed of a plurality of slits. A pipe 41 is inserted through a pipe through hole (not shown) provided on the lower surface of the lower right corner of the bottom frame 2 of the indoor unit 1.
(Not shown) along the wall.

In the air conditioner having the above configuration, the indoor air is
The air circulation port 4 of the decorative cover 42 is provided by the ventilation unit 10.
It is sucked in from 3 and discharged outside through the wall pipe 4.

Therefore, the wall pipe 4 for piping can be used for both the piping passage and the ventilation passage without separately providing a damper or a ventilation passage in the indoor unit, the noise during ventilation can be reduced with a simple structure, and sufficient ventilation can be achieved. It is possible to realize a low-cost and highly reliable air conditioner capable of obtaining the air volume. In addition, ventilation can be performed at the same time as the air-conditioning operation, and the indoor comfort can be improved.

In the first and second embodiments, the ventilation unit 10 shown in FIGS. 1 and 2 has been described. However, the configuration of the ventilation unit is not limited to this, and indoor air is supplied through a ventilation passage in a wall pipe. Any device may be used as long as it can exhaust air to the outside of the room or inhale outside air into the room through a ventilation passage in the wall pipe.

In the first and second embodiments, the pipe through-holes 2a are provided on the lower surface and side surfaces of the lower corners of the bottom frame 2. It may be set appropriately according to the shape of the frame and the like.

In the first and second embodiments, the ventilation unit 10 includes the guide path 7 as a ventilation passage section and the turbo fan 1 as a suction fan section above the piping arrangement section.
Although the suction fan 7 is disposed, the suction fan section may be disposed on one of the upper and lower sides or the left and right sides with respect to the ventilation passage section and the pipe arrangement section. By doing so, the protrusion of the ventilation unit with respect to the wall surface can be reduced, and the ventilation unit can be mounted in a narrow place where there is no room in the installation space, and the degree of freedom of installation can be increased.

[0039]

As is apparent from the above description, in the air conditioner of the first aspect of the present invention, the air flow cover is attached to the pipe through hole provided in the casing of the indoor unit, and the air flow cover to which the air flow cover is attached is attached. Along with providing a wall pipe penetrating the wall on the back side of the casing near the through hole,
A ventilation unit is connected to the wall pipe.

Therefore, according to the air conditioner of the first aspect of the present invention, an air flow cover is attached to the pipe through hole provided on the side surface or the lower surface of the casing, and, for example, the pipe through hole allows the indoor air to pass through the casing. By using the ventilation unit, the room air is sucked from the air circulation cover of the pipe through hole and discharged outside through the wall pipe, so that the damper and the ventilation passage are provided to the indoor unit. Without providing separately, a wall pipe for piping can be used for a piping passage and a ventilation passage by using a piping through hole provided in a casing of an indoor unit as a suction port. In addition, the outside air sucked from the outside by the ventilation unit may be introduced into the room and ventilated, and in that case, the piping through hole of the casing is used as an outlet for blowing the outside air. Therefore, with a simple structure, noise at the time of ventilation can be reduced, and a low-cost and highly reliable air conditioner that can obtain a sufficient ventilation air volume can be realized. Further, the air-conditioning operation and the ventilation operation can be performed at the same time, and the indoor comfort can be improved.

In the air conditioner according to the second aspect of the present invention, the pipe passage and the ventilation passage are separated by the partition plate disposed in the wall pipe in the air conditioner according to the first aspect. While securing the piping passage of
It is possible to reliably secure a ventilation passage for guiding air from inside the casing to the ventilation unit (or for guiding air in the opposite direction). Therefore, a ventilation passage can be formed in a commonly used pipe wall pipe, and a sufficient amount of ventilation air can be reliably obtained.

According to a third aspect of the present invention, in the air conditioner of the first or second aspect, the ventilation unit includes a ventilation passage portion connected to a ventilation passage of the wall pipe; A piping arrangement part in which a part of the piping drawn from the wall pipe is arranged adjacent to the part, and a suction fan part arranged on one of the upper and lower sides or the left and right sides with respect to the ventilation passage part and the piping arrangement part, Since there is a passage for guiding air from the ventilation passage section to the suction fan section, the protrusion of the ventilation unit on the wall surface can be reduced, and the ventilation unit can be mounted in a narrow place where there is no room in the installation space, and the installation is free. The degree can be expanded.

The air conditioner according to the invention of claim 4 is a decorative cover having an air flow opening at a location where a pipe disposed along a wall surface from a pipe through hole provided in a casing of an indoor unit passes through the wall. And one end of a wall pipe penetrating the wall is connected to the portion covered with the decorative cover, and a ventilation unit is connected to the other end of the wall pipe.

Therefore, according to the air conditioner of the fourth aspect of the present invention, for example, the room air is discharged from the air flow opening of the decorative cover to the outside of the room through the wall pipe by the ventilation unit. The wall pipe for piping can be used for both the piping passage and the ventilation passage without separately providing a passage in the indoor unit. In addition, the outside air sucked from the outside by the ventilation unit may be introduced into the room and ventilated, and in this case, the air circulation port of the decorative cover is used as an outlet for blowing the outside air. Therefore, with a simple structure, noise at the time of ventilation can be reduced, and a low-cost and highly reliable air conditioner that can obtain a sufficient ventilation air volume can be realized. Further, the air-conditioning operation and the ventilation operation can be performed at the same time, and the indoor comfort can be improved.

Further, the ventilation unit according to the fifth aspect of the present invention
A ventilation passage section and a pipe arrangement section arranged adjacent to each other,
It has a suction fan part arranged on one of the upper and lower sides or the left and right sides of the ventilation passage part and the pipe arrangement part, and a passage for guiding air from the ventilation passage part to the suction fan part.

Therefore, according to the ventilation unit of the fifth aspect of the present invention, since the suction fan is disposed on one of the upper and lower sides or the left and right sides with respect to the ventilation passage and the pipe arrangement part, the protrusion of the ventilation unit on the wall surface. The ventilation unit can be mounted in a narrow place where there is no room in the installation space, and the degree of freedom of installation can be expanded.

The ventilation unit of the invention according to claim 6 is:
6. The ventilation unit according to claim 5, wherein a check valve that allows only the flow of air from the ventilation passage to the suction fan is disposed in the passage for guiding air from the ventilation passage to the suction fan. When the suction fan unit is stopped, the outside air can be prevented from flowing into the room when the ventilation operation is stopped by the check valve arranged in the passage for guiding the air from the ventilation passage unit to the suction fan unit.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an indoor unit and a ventilation unit of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is an enlarged exploded perspective view of the ventilation unit shown in FIG.

FIG. 3 is a view showing a horizontal cross section of a wall pipe, a partition plate, and a taxiway of the air conditioner.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view of a main part of an air conditioner according to a second embodiment of the present invention.

FIG. 6 is a sectional view of a conventional air conditioner.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Indoor unit, 2 ... Bottom frame, 3 ... Wall cover, 4 ... Wall pipe, 5 ... Installation plate, 6 ... Partition plate, 7
... taxiway, 8 ... seal ring, 9 ... air circulation cover, 1
0: ventilation unit, 11: bell mouth part, 12: AC motor, 13: printed circuit board, 14: scroll horizontal member,
15 damper, 16 first scroll member, 17 turbo fan, 18 second scroll member, 19 casing, 20 ventilation passage.

Claims (6)

[Claims] 1. An indoor unit (1) having a casing (2) provided with a pipe through hole (2a), and an air flow cover (9) attached to the pipe through hole (2a) of the casing (2). A wall pipe (4) provided on the back side of the casing (2) near the pipe through hole (2a) to which the air flow cover (9) is attached, and penetrating the wall; ) Connected to a ventilation unit (10). 2. The air conditioner according to claim 1, further comprising: a partition plate (6) arranged in the wall pipe (4) and separating a pipe passage and a ventilation passage. Machine. 3. The air conditioner according to claim 1, wherein the ventilation unit (10) is connected to a ventilation passage of the wall pipe (4); A pipe arrangement part in which a part of the pipe drawn from the wall pipe (4) is arranged adjacent to the part (7); and one of upper and lower sides or left and right with respect to the ventilation passage part (7) and the pipe arrangement part Suction fan (1)
An air conditioner comprising: (7) a passage for guiding air from the ventilation passage section (7) to the suction fan section (17). 4. An indoor unit (1) having a casing (2) provided with a pipe through hole (2a), and a pipe arranged along a wall surface from the pipe through hole (2a) of the casing (2). Covers a portion penetrating the wall, and has a decorative cover (42) having an air flow opening (43), and one end is connected to the portion covered with the decorative cover (42), and penetrates the wall, An air conditioner comprising: a wall pipe (4) through which the pipe passes; and a ventilation unit (10) connected to the other end of the wall pipe (4). 5. Ventilation passage portions arranged adjacent to each other
(7) and a piping arrangement part; a suction fan part (17) arranged on one of the upper and lower sides or the left and right sides with respect to the ventilation passage part (7) and the piping arrangement part; A ventilation unit having a passage for guiding air to a suction fan section (17). 6. The ventilation unit according to claim 5, wherein the ventilation unit is disposed in a passage for guiding air from the ventilation passage to the suction fan, and the suction fan is connected to the ventilation passage from the ventilation passage. A ventilation unit comprising a check valve (15) that allows only air flow to the section (17).