JP3807427B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner.

  In recent years, indoor units of air conditioners that perform indoor air conditioning are often used. Since this indoor unit is arranged indoors, it often enters the field of view of a resident or the like. For this reason, it is important that the indoor unit does not impair the aesthetics of the room. However, the casing of the indoor unit is usually provided with a blowout port through which air blown into the room passes. The indoor unit performs indoor air conditioning by blowing conditioned air into the room from the outlet. This outlet is often provided in front of the casing of the indoor unit and is easy to touch the occupants of the room. Therefore, harmony between the appearance of the indoor unit and the wall surface of the room may be hindered, and the aesthetics of the room may be impaired.

On the other hand, a conventional air conditioner indoor unit as described above is often provided with a horizontal flap that opens and closes the outlet (see Patent Document 1). This horizontal flap opens the outlet when the indoor unit is in operation, and guides the air blown from the outlet. When the operation of the indoor unit is stopped, the horizontal flap closes the outlet. This prevents the outlet from entering the field of view of the resident or the like when the operation of the indoor unit is stopped, and reduces the risk of impairing the aesthetics of the room.
Japanese Patent No. 3334688

  However, in the indoor unit of an air conditioner as described above, there is a possibility that the indoor aesthetics are still spoiled. That is, even when the outlet port 202 is closed by the horizontal flap 201 as in the indoor unit 200 shown in FIG. 4, the seam between the horizontal flap 201 and the outlet port 202 often appears in front view. Moreover, in an indoor unit of an air conditioner, not only a blowout port but also a suction port may be arranged in front. In this case, similarly to the blowout port, if the suction port enters the field of view of a resident or the like, the aesthetics of the room may be impaired. In addition, a panel that opens and closes the air inlet is provided to close the air inlet when the operation of the air conditioner is stopped, but the joint between the air inlet and the panel appears in front view, and the indoor aesthetic There is a risk of damage.

In such an indoor unit, the aesthetics of the room may be impaired.
An object of the present invention is to provide an indoor unit of an air conditioner that can further reduce the risk of impairing the beauty of the room.

  An indoor unit of an air conditioner according to a first invention includes a casing and a front panel. The casing has a blowout port through which air blown into the room passes and a suction port through which air taken in from the room passes. The front panel has a first panel and a second panel. The first panel has a projection area larger than that of the air outlet in a front view when the air outlet is opened and closed and the air outlet is closed. The second panel has a larger projected area than the suction port in a front view when the suction port is opened and closed and the suction port is closed. The first panel moves upward, and the upper end of the first panel rotates about the lower end in a direction away from the casing, thereby opening the outlet. As the first panel moves, the second panel also moves upward, and the suction port is opened by rotating the upper end of the second panel about the lower end in a direction away from the casing. .

  In this indoor unit of an air conditioner, the first panel has a larger projection area than the air outlet in a front view when the air outlet is closed. For this reason, the 1st panel can hide a blower outlet in front view. Further, the second panel has a larger projected area than the suction port in a front view when the suction port is closed. For this reason, the second panel can hide the suction port in a front view. Thus, in this indoor unit of an air conditioner, it is possible to reduce the possibility that the aesthetics of the room will be impaired by the suction port and the outlet.

Further, when the first panel moves vertically upward, the blowout port is opened, and when the second panel rotates, the suction port is opened. Thereby, inhalation of the air to an indoor unit and blowing of the air from an indoor unit can fully be performed.
An indoor unit of an air conditioner according to a second aspect of the invention is the indoor unit of the air conditioner of the first aspect, wherein the second panel is located above the first panel. And in the state which the blower outlet and the suction inlet were opened, it will be in the state where a part of upper side of the 1st panel and a part of lower side of the 2nd panel overlapped.

In this indoor unit of an air conditioner, a part on the upper side of the first panel and a part on the lower side of the second panel are overlapped, and the blowout port and the suction port are opened.
An air conditioner indoor unit according to a third aspect of the present invention is the air conditioner indoor unit of the first aspect or the second aspect, wherein the first panel does not have a joint and includes a blow-out opening in a front view. Have substantially the same width. Further, the second panel does not have a joint, and has a width that is substantially the same as the width of the casing including the suction port in a front view.

  In this indoor unit of an air conditioner, the first panel and the second panel have substantially the same width as the width of the casing. For this reason, the first panel and the second panel can cover the casing over substantially the entire width direction of the casing. Further, the first panel and the second panel have no joints. For this reason, the seam which appears in the front view of the indoor unit can be reduced. Thereby, in this indoor unit of an air conditioner, it is possible to further reduce the risk that the aesthetics will be impaired.

An indoor unit of an air conditioner according to a fourth aspect of the present invention is the indoor unit of any one of the first to third aspects of the invention, and the front panel covers substantially the entire front surface of the casing in a front view.
In this indoor unit of an air conditioner, substantially the entire front surface of the casing is covered with the front panel. For this reason, in this indoor unit of an air conditioner, the seam appearing in the indoor unit in a front view is further reduced. Thereby, in this indoor unit of an air conditioner, the risk of losing aesthetics can be further reduced.

An indoor unit of an air conditioner according to a fifth aspect of the present invention is the indoor unit of the air conditioner of any one of the first to fourth aspects, wherein the front side of the front panel is vertical in a state where the outlet is closed. It is a flat surface parallel to the direction.
In this indoor unit of an air conditioner, the front side of the front panel is a flat surface parallel to the vertical direction when the outlet is closed. Therefore, in this indoor unit of an air conditioner, harmony between the appearance of the indoor unit in a front view and the side wall of the room is improved. Thereby, in this indoor unit of an air conditioner, the beauty can be further improved.

An air conditioner indoor unit according to a sixth aspect of the present invention is the air conditioner indoor unit of any of the first to fifth aspects, wherein the first panel is close to the casing when the outlet is opened. Move in state.
In the indoor unit of this air conditioner, the first panel moves in a state of being close to the casing when the outlet is opened, and therefore the gap between the first panel and the casing is small. Therefore, it is possible to suppress the occurrence of a short circuit in which the air blown from the blowout port leaks from between the first panel and the casing.

In the indoor unit of the air conditioner according to the first aspect of the invention, it is possible to reduce the possibility that the aesthetics of the room will be impaired by the suction port or the outlet. In addition, air can be sufficiently sucked into the indoor unit and air can be blown out from the indoor unit.
In the indoor unit of the air conditioner according to the second aspect of the invention, a part of the upper side of the first panel and a part of the lower side of the second panel are overlapped, and the outlet and the inlet are opened.

In the indoor unit of an air conditioner according to the third aspect of the invention, the seam that appears in the front view of the indoor unit can be reduced, and the risk that the aesthetic appearance is impaired can be further reduced.
In the indoor unit of an air conditioner according to the fourth aspect of the present invention, the seam appearing in the indoor unit in a front view is further reduced, so that the risk of losing aesthetics can be further reduced.
In the indoor unit of the air conditioner according to the fifth aspect of the invention, the harmony between the appearance of the indoor unit in the front view and the side wall of the room is improved, so that the aesthetics can be further improved.

  In the indoor unit of the air conditioner according to the sixth aspect of the invention, it is possible to suppress the occurrence of a short circuit in which the air blown from the blowout port leaks from between the first panel and the casing.

[Overall configuration of air conditioner]
The structure of the air conditioner 1 concerning 1st Embodiment of this invention and the outline of a refrigerant circuit are shown in FIG.
This air conditioner 1 includes an indoor unit 2a attached to an indoor wall surface and the like, and an outdoor unit 3 installed outside the room.

The refrigerant circuit of the air conditioner 1 mainly includes an indoor heat exchanger 20, an accumulator 31, a compressor 32, a four-way switching valve 33, an outdoor heat exchanger 30, and an electric expansion valve 34.
The indoor heat exchanger 20 provided in the indoor unit 2a exchanges heat with the air that comes into contact therewith. Further, the indoor unit 2a is provided with an indoor fan 21 for sucking indoor air, passing the air through the indoor heat exchanger 20, and discharging the air after the heat exchange is performed indoors. The indoor fan 21 is rotationally driven by an indoor fan motor 22 provided in the indoor unit 2a. The detailed configuration of the indoor unit 2a will be described later.

  The outdoor unit 3 is connected to a compressor 32, a four-way switching valve 33 connected to the discharge side of the compressor 32, an accumulator 31 connected to the suction side of the compressor 32, and a four-way switching valve 33. An outdoor heat exchanger 30 and an electric expansion valve 34 connected to the outdoor heat exchanger 30 are provided. The electric expansion valve 34 is connected to the pipe 41 via the filter 35 and the liquid closing valve 36, and is connected to one end of the indoor heat exchanger 20 via the pipe 41. The four-way switching valve 33 is connected to the pipe 42 via the gas closing valve 37 and is connected to the other end of the indoor heat exchanger 20 via the pipe 42. The outdoor unit 3 is provided with an outdoor fan 38 for discharging the air after heat exchange in the outdoor heat exchanger 30 to the outside. The outdoor fan 38 is rotationally driven by an outdoor fan motor 39.

[Configuration of indoor unit]
FIG. 2A shows a front view of the indoor unit 2a, and FIG. 2B shows a side sectional view of the indoor unit 2a. 2A and 2B show the indoor unit 2a when operation is stopped.
The indoor unit 2a is a wall-mounted indoor unit provided on a side wall of the room, and includes a casing body 23 and a front panel 24a.

[Case body]
The casing body 23 has a rectangular shape that is long in the horizontal direction when viewed from the front, and a rectangular cross-sectional shape that is long in the vertical direction when viewed from the side. In the casing body 23, the indoor heat exchanger 20, the indoor fan 21, and the indoor fan motor 22 (not shown) described above are provided. As shown in FIG. 2B, in a side view, the indoor fan 21 is disposed in the center of the casing body 23 so that the indoor heat exchanger 20 having an inverted V shape surrounds the upper half of the indoor fan 21. Is arranged. The casing body 23 is provided with a suction port 25 and a blowout port 26.

  The suction port 25 is an opening through which air taken into the casing body 23 from the room by the indoor fan 21 passes, and includes a first suction port 27 and a second suction port 28. The first suction port 27 has a shape that is long in the horizontal direction when viewed from the front, and its length is slightly smaller than the width W of the casing body 23. As shown in FIG. 2B, the first suction port 27 is provided near the center of the front surface of the casing body 23 and faces the front side of the indoor heat exchanger 20. The second suction port 28 is configured by a plurality of slits that are long in the longitudinal direction of the casing body 23, and is provided on the top surface of the casing body 23.

  The air outlet 26 is an opening through which air blown into the room through the indoor heat exchanger 20 by the indoor fan 21 passes. As shown in FIG. 3, the outlet 26 has a shape that is long in the horizontal direction, and its length is slightly smaller than the width W of the casing body 23. Further, the outlet 26 is provided in the vicinity of the lower portion of the casing body 23 and in front of the casing body 23. FIG. 3 is a side sectional view of the indoor unit 2a during operation.

A horizontal flap 29 is provided near the outlet 26. The horizontal flap 29 is a plate-like member having a shape that is long in the longitudinal direction of the indoor unit 2a, and guides the air blown out from the blowout port 26. The horizontal flap 29 has a rotation axis parallel to the longitudinal direction of the indoor unit 2a, and changes the air guiding direction by rotating about the rotation axis.
[Front panel]
The front panel 24 a covers the outlet 26 and the first inlet 27 in front view, and opens and closes the outlet 26 and the first inlet 27. The front panel 24 a is a panel aggregate in which a plurality of seamless panels are aggregated, and includes a first panel 241 and a second panel 242.

  The first panel 241 is disposed below the front surface of the casing body 23. The first panel 241 is movably supported by a moving mechanism (not shown), and opens and closes the outlet 26. The first panel 241 is a rectangular flat member having no seam, and has a width that is substantially the same as the width W of the casing body 23 in a front view and a height that is approximately half the height H of the casing body 23. . The first panel 241 is in a state parallel to the vertical direction as shown in FIG. 2B when the outlet 26 is closed. In this state, the first panel 241 has a larger projected area than the outlet 26 in front view. Accordingly, the first panel 241 completely covers the lower half of the front surface of the casing body 23 including the air outlet 26 in a state where the air outlet 26 is closed.

  The second panel 242 is disposed above the front surface of the casing body 23. The second panel 242 is movably supported by a moving mechanism (not shown), and opens and closes the first suction port 27. Similar to the first panel 241, the second panel 242 is a rectangular flat member having no seam, and has substantially the same width as the width W of the casing body 23 including the first suction port 27 in a front view. The casing body 23 has a height that is approximately half the height H of the casing body 23. When the first suction port 27 is closed, the second panel 242 is in a state parallel to the vertical direction as shown in FIG. In this state, the second panel 242 is positioned above the first panel 241 along with the first panel 241 and has a larger projected area than the first suction port 27 in a front view. Accordingly, the second panel 242 completely covers the upper half of the front surface of the casing body 23 including the first suction port 27 in a state where the first suction port 27 is closed.

  As described above, the first panel 241 completely covers the lower half of the front surface of the casing body 23 including the air outlet 26 when the air outlet 26 is closed, and the second panel 242 covers the first air inlet 27. In the closed state, the upper half of the front surface of the casing body 23 including the first suction port 27 is completely covered. Further, the first panel 241 and the second panel 242 are arranged side by side with no gap. For this reason, the front panel 24a constituted by the first panel 241 and the second panel 242 has an indoor space as shown in FIG. 2 (a) in a state where the outlet 26 and the first inlet 27 are closed. The entire front surface of the machine 2a is almost completely covered. Therefore, in this state, in front view, only the front panel 24a enters the field of view of the resident and the outlet 26 and the first suction port 27 do not enter the field of view of the resident. Further, no other seam appears on the front panel 24a except for the seam extending in the horizontal direction formed by the upper end of the first panel 241 and the lower end of the second panel 242. Further, the first panel 241 is parallel to the vertical direction, and the second panel 242 is also parallel to the vertical direction. For this reason, the front panel 24a forms a flat surface 243 parallel to the vertical direction in a state where the blowout port 26 and the first suction port 27 are closed.

[Operation of indoor unit]
Next, an operation when the indoor unit 2a of the air conditioner 1 performs an air conditioning operation will be described.
When the indoor unit 2a is stopped, the front panel 24a is in a state where the outlet 26 and the first inlet 27 are closed as described above.
When the indoor unit 2a operates, first, the indoor fan 21 is activated at a low rotation.

  Next, the front panel 24a moves, and the blowout port 26 and the first suction port 27 are opened. Thereby, the air volume of the air taken into the indoor unit 2a is secured, and the air is blown out in the horizontal direction. In this case, as shown in FIG. 3, the first panel 241 moves vertically upward, and the upper end of the first panel 241 rotates around the lower end in a direction away from the casing body 23. The blower outlet 26 is opened by the first panel 241 moving vertically upward. Further, as the first panel 241 moves, the second panel 242 also moves vertically upward, and the upper end of the second panel 242 rotates about the lower end in a direction away from the casing body 23. When the second panel 242 rotates, the first suction port 27 is opened. Eventually, a part on the upper side of the first panel 241 and a part on the lower side of the second panel 242 are overlapped, and the blowout port 26 and the first suction port 27 are opened. The first panel 241 moves in a state of being close to the front surface of the casing body 23. The first panel 241 and the casing main body 23 are preferably not in contact with each other during the movement of the first panel 241 from the viewpoint of preventing the occurrence of scratches due to rubbing, and about 1 mm between the first panel 241 and the casing main body 23. It is more desirable to have a gap of 2 mm.

After the front panel 24a moves and the blowout port 26 and the first suction port 27 are opened, the horizontal flap 29 rotates and moves so as to have a blowout angle corresponding to the set operation mode.
As described above, the indoor unit 2a is operated.
When the indoor unit 2a stops operation, the front panel 24a moves, and the outlet 26 and the first inlet 27 are closed as shown in FIGS. 2 (a) and 2 (b). Return.

〔Characteristic〕
(1)
In the indoor unit 2a of the air conditioner 1, the front panel 24a covers the entire front surface of the indoor unit 2a when the operation is stopped. The front panel 24a forms a flat surface 243 parallel to the vertical direction. For this reason, when the operation of the indoor unit 2a is stopped, only the flat front panel 24a appears in the field of view of the resident or the like in the front view. Further, only the seam extending in the horizontal direction (horizontal direction) that is the boundary between the first panel 241 and the second panel 242 appears on the surface of the front panel 24a, and no other seam appears. Therefore, in the indoor unit 2a, the seam extending in the vertical direction (vertical direction) does not appear in the front view, and the seam extending in the horizontal direction is also minimal. For this reason, in the indoor unit 2a of the air conditioner 1, the appearance when the operation of the indoor unit 2a is stopped in the front view and the wall surface of the room are harmonized, and the aesthetic appearance is improved.

(2)
In general, since a wall-mounted indoor unit is disposed on a wall surface in a room, the front portion is likely to enter the field of view of a resident or the like. Moreover, the area of the front part of an indoor unit is often large. For this reason, the present invention that improves the aesthetics of the front view when operation is stopped is particularly effective.
(3)
In the indoor unit 2a of the air conditioner 1, the air outlet 26 and the first air inlet 27 are opened by the movement of the first panel 241 and the second panel 242 during operation. For this reason, air can be sufficiently sucked into the indoor unit 2a and air can be blown out from the indoor unit 2a.

(4)
In the indoor unit 2a of the air conditioner 1, the indoor fan 21 is activated at a low speed before the front panel 24a is opened. In this case, since the indoor fan 21 rotates with the front panel 24a closed, the air inside the indoor unit 2a is agitated. As a result, during the cooling operation, the odor trapped inside the indoor unit 2a is adsorbed by the moisture condensed in the indoor heat exchanger 20. Therefore, the odor leaking into the room can be reduced. During heating, the draft feeling at the initial stage of operation can be reduced by closing the front panel 24a until the temperature of the indoor heat exchanger 20 rises.

(5)
In the indoor unit 2 a of the air conditioner 1, since the first panel 241 is close to the casing body 23 when opening the outlet 26, the air blown from the outlet 26 is in contact with the first panel 241 and the casing body 23. It is possible to suppress the occurrence of a short circuit that leaks from the gap between the first suction port 27 and is sucked again from the first suction port 27.

Other Embodiment
In the indoor unit 2a according to the above-described embodiment, the front panel 24a is configured by the first panel 241 and the second panel 242, but may be configured by a plurality of panels. However, the smaller the number of the plurality of panels constituting the front panel 24a, the fewer the seams appearing on the front panel 24a. Therefore, it is desirable that the number of the plurality of panels constituting the front panel 24a is small. Further, it is desirable that the plurality of panels constituting the front panel 24a are arranged side by side in the vertical direction. Thereby, the seam extending in the vertical direction does not appear in the front view, and the aesthetic appearance is improved.

  INDUSTRIAL APPLICABILITY The present invention has an effect of further reducing the risk of impairing the indoor aesthetics, and is useful as an indoor unit for an air conditioner.

The figure showing the structure of an air conditioner and the structure of a refrigerant circuit. (A) The front view at the time of the operation stop of an indoor unit. (B) Side surface sectional drawing at the time of the operation stop of an indoor unit. Side surface sectional drawing at the time of a driving | running | working of an indoor unit. The front view of the indoor unit of the conventional air conditioner.

Explanation of symbols

1 Air conditioner 2a Indoor unit 23 Casing body (casing)
24a Front panel 26 Outlet 27 First suction port (suction port)
241 1st panel 242 2nd panel 243 Flat surface W Width of casing body (width of casing)

Claims (6)

A casing (23) having an air outlet (26) through which air blown into the room passes and an air inlet (27) through which air taken in from the room passes;
A first panel (241) having a larger projected area than the blowout port (26) in a front view in a state where the blowout port (26) is opened and closed and the blowout port (26) is closed, and the suction port (27) A front panel (24a) having a second panel (242) having a projection area larger than that of the suction port (27) in a front view in a state where the suction port (27) is closed when opening and closing
With
The first panel (241) moves upward, and the upper end of the first panel (241) rotates about the lower end in a direction away from the casing (23), so that the outlet ( 26)
Along with the movement of the first panel (241), the second panel (242) also moves upward, and the upper end of the second panel (242) is lowered in a direction away from the casing (23). The suction port (27) is opened by rotating about
Air conditioner indoor unit (2a). The second panel (242) is located above the first panel (241),
A part of the upper side of the first panel (241) and a part of the lower side of the second panel (242) overlap with each other in a state where the outlet (26) and the suction port (27) are opened. State,
The indoor unit (2a) of the air conditioner according to claim 1. The first panel (241) does not have a seam and has substantially the same width as the width (W) of the casing (23) including the outlet (26) in a front view.
The second panel (242) does not have a seam, and has substantially the same width as the width (W) of the casing (23) including the suction port (27) in a front view.
The indoor unit (2a) of the air conditioner according to claim 1 or 2. The front panel (24a) covers substantially the entire front surface of the casing (23) in a front view.
The indoor unit (2a) of the air conditioner according to any one of claims 1 to 3. The front side of the front panel (24a) is a flat surface (243) parallel to the vertical direction when the outlet (26) is closed.
The indoor unit (2a) of the air conditioner according to any one of claims 1 to 4. The first panel (241) moves close to the casing (23) when opening the outlet (26).
The indoor unit (2a) of the air conditioner (1) according to any one of claims 1 to 5.

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