JP2015206495A - air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of suppressing dust attaching to a ceiling surface and a wall surface around an upper surface suction port of an indoor unit.SOLUTION: An air conditioner 100 includes an indoor unit 7 provided on an indoor surface R1 of the indoors. The indoor unit 7 has: an upper surface suction port 11 arranged on an upper surface side of the indoor unit 7 and for sucking the indoor air; an indoor heat exchanger 8 for exchanging heat with the air sucked from the upper surface suction port 11; a filter 14 for removing dust from the air sucked from the upper surface suction port 11; a blowout port 10 for blowing out the air in which heat is exchange in the indoor heat exchanger 8 to the indoors; an indoor blower fan 9 provided on an air passage 15 from the upper surface suction port 11 toward the blowout port 10; a wind direction louver 19 for deflecting the direction of the air blown out of the blowout port 10; and a wall surface cover 30 arranged in a rear position of the upper surface suction port 11. The wall surface cover 30 is arranged above the upper surface suction port 11 so as to cover the indoor surface R1 around the upper surface suction port 11.

Description

  The present invention relates to an air conditioner including a wall-mounted indoor unit (hereinafter referred to as “indoor unit”).

  The air conditioner includes a heat pump refrigeration cycle, and can perform a cooling operation and a heating operation. In particular, an air conditioner equipped with an indoor unit that is hung on the wall surface of the room is such that the indoor air sucked from the upper surface suction port formed on the upper surface of the indoor unit is heat-exchanged with the refrigerant in the refrigeration cycle. The air is blown out as cold air or hot air from the blower outlet at the lower front of the machine (see, for example, Patent Document 1).

  In order to take indoor air into the interior of the indoor unit from the upper surface suction port, the indoor unit is hung on an installation plate attached to the wall with a gap of about 50 mm from the ceiling surface. As described in Patent Document 1, an indoor unit is generally provided with an open / close panel that changes the air flow on the front surface, and the open / close state of the open / close panel is changed depending on the operation mode. During cooling operation or heating operation, the open / close panel is opened, and the upper surface inlet and the oblique front inlet are opened. The indoor unit sucks air from the upper surface suction port provided on the upper surface of the outdoor unit and the front surface suction port provided obliquely at the upper part of the front surface, passes through the heat exchanger and the dust collector, and blows out from the outlet. As a result, a large amount of air is heat-exchanged. When only the dust collection operation is performed, the flow direction of the air sucked from the suction port is regulated by closing the open / close panel and closing the oblique front suction port. By doing in this way, compared with the case where the front panel is open | released, the inlet area is reduced and the flow of air is concentrated on the dust collector.

JP 2006-78124 A

  However, in the conventional indoor unit, before the air sucked into the indoor unit, the air flows along the ceiling surface and the wall surface above the indoor unit, and flows to the upper surface suction port in a state including indoor dust. For this reason, there is a problem that dust easily adheres to the ceiling surface and the wall surface around the upper surface inlet of the indoor unit and becomes dirty.

In addition, the indoor unit is installed at a high position in the room, and the clearance between the top surface of the indoor unit and the ceiling surface is narrow, so that the user of the air conditioner can easily clean the ceiling surface and wall surface above the indoor unit. There was a problem that it could not be done.
In that case, there is a problem that it is difficult for the operator to perform the cleaning work because the cleaning work that is not easy or frequently performed becomes the cleaning work at a high place.

  Then, this invention makes it a subject to provide the air conditioner which can suppress that dust adheres to the ceiling surface around the upper surface inlet of an indoor unit, and a wall surface.

In order to solve the above-described problem, an air conditioner according to the present invention is an air conditioner including an indoor unit provided on an indoor surface of the room, and the indoor unit is disposed on an upper surface side of the indoor unit. An upper surface suction port for sucking indoor air, an indoor heat exchanger for exchanging heat with the air sucked from the upper surface suction port, a filter for removing dust from the air sucked from the upper surface suction port, and the indoor heat exchanger An air outlet that blows out the heat-exchanged air into the room, an indoor air blower fan that is provided on the air path from the upper surface inlet to the air outlet, and a wind direction louver that deflects the direction of the air that is blown out from the air outlet. A wall cover disposed at a rear position of the upper surface suction port, and the wall surface cover is disposed above the upper surface suction port so as to cover an indoor surface around the upper surface suction port. That features To.
Here, the “interior surface” includes an indoor wall surface and a ceiling surface.

  According to such a configuration, the air conditioner is disposed such that the wall cover disposed at the rear position of the upper surface suction port of the indoor unit covers the indoor surface around the upper surface suction port above the upper surface suction port. By doing this, it is possible to suppress the dust from adhering to the ceiling surface and the wall surface around the upper surface suction port.

  ADVANTAGE OF THE INVENTION According to this invention, in a wall-hanging type indoor unit, it can suppress that dust adheres to the wall surface around the upper surface inlet of an indoor unit, and a ceiling surface.

It is a cycle lineblock diagram of the air harmony machine concerning a 1st embodiment of the present invention. It is a longitudinal section of the indoor unit of the air harmony machine concerning a 1st embodiment of the present invention. It is a longitudinal cross-sectional view which shows a state when the wall surface cover of the air conditioner which concerns on 1st Embodiment of this invention is accommodated in the back surface of an indoor unit. It is a perspective view of the wall surface cover of the air conditioner which concerns on 1st Embodiment of this invention. It is a longitudinal cross-sectional view of the indoor unit which shows the installation state of the wall surface cover of the air conditioner which concerns on 2nd Embodiment of this invention. It is a longitudinal cross-sectional view of the indoor unit which shows a state when the wall surface cover of the air conditioner which concerns on 2nd Embodiment of this invention is folded. It is a longitudinal cross-sectional view which shows a state when the wall surface cover of the air conditioner which concerns on 2nd Embodiment of this invention is accommodated in the back surface of the indoor unit. It is a longitudinal cross-sectional view of the indoor unit which shows a state when the wall surface cover of the air conditioner which concerns on 2nd Embodiment of this invention is arrange | positioned in the proximity | contact position of an upper surface suction inlet. It is a perspective view which shows the wall surface cover of the air conditioner which concerns on 2nd Embodiment of this invention. It is a principal part expanded sectional view which shows the wall surface cover of the air conditioner which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the modification of a wall surface cover. It is a principal part expanded sectional view which shows the modification of a wall surface cover.

[First Embodiment]
First, an air conditioner according to a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a diagram illustrating a configuration of a refrigeration cycle of the air conditioner according to the first embodiment.

≪Air conditioner≫
As shown in FIG. 1, an air conditioner 100 includes an outdoor unit 1 that is disposed outdoors, and an indoor unit that is connected to the outdoor unit 1 by piping and is disposed on an indoor surface R1 (see FIG. 2). 7. In the refrigeration cycle of the air conditioner 100 shown in FIG. 1, the outdoor unit 1 includes a compressor 2, a four-way valve 3, an outdoor heat exchanger 4, an outdoor blower fan 5, and an expansion valve 6. . The indoor unit 7 includes an indoor heat exchanger 8 and an indoor fan 9 in the refrigeration cycle of the air conditioner 100.

  During the cooling operation, the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the outdoor heat exchanger 4 through the four-way valve 3. The refrigerant flowing into the outdoor heat exchanger 4 is condensed and becomes liquid refrigerant by exchanging heat with the outdoor air sent by the outdoor blower fan 5. By passing through the expansion valve 6, the liquid refrigerant becomes a low-temperature and low-pressure two-phase refrigerant and flows into the indoor heat exchanger 8. The low-temperature and low-pressure two-phase refrigerant that has flowed into the indoor heat exchanger 8 is heat-exchanged with indoor air sent by the indoor blower fan 9. At this time, the indoor air sent to the indoor heat exchanger 8 is cooled by the low-temperature and low-pressure two-phase refrigerant flowing into the indoor heat exchanger 8 and discharged into the room from the outlet 10 of the indoor unit 7 shown in FIG. Is done. Since the blown air Ai1 discharged into the room from the blower outlet 10 is lower than the temperature of the sucked air Ai2 at the upper surface inlet 11, the room temperature can be lowered. The refrigerant heat-exchanged by the indoor heat exchanger 8 returns to the compressor 2 again via the four-way valve 3 (see FIG. 1).

≪Indoor unit≫
As shown in FIG. 2, the indoor unit 7 is a wall-hanging device installed on a wall surface R2 in the room. The indoor unit 7 includes an upper surface suction port 11 disposed on the upper surface side of the indoor unit 7, an indoor heat exchanger 8 that exchanges heat with the air sucked from the upper surface suction port 11, and the upper surface suction port 11 and the indoor heat exchanger 8. , A blower outlet 10 disposed below the upper surface suction port 11, an indoor blower fan 9 provided on the air passage 15 from the upper surface suction port 11 to the blower outlet 10, The wind direction louver 19 disposed at the air outlet 10, the wall cover 30 disposed at the rear position of the upper surface inlet 11, the decorative panel 12 provided on the front surface of the main body, and the upper and lower sides of the decorative panel 12 are fixed. The makeup frame 13 is mainly provided.

  The upper surface suction port 11 is a suction port that sucks in indoor air, and is disposed at the upper part of the main body of the indoor unit 7 (above the decorative panel 12 (upper side)). On the back side of the decorative panel 12, a filter 14 for removing dust from the air sucked from the upper surface suction port 11 is disposed.

  An inverted V-shaped indoor heat exchanger 8 that exchanges heat with air from which dust has been removed by the filter 14 is disposed downstream of the filter 14. The blower outlet 10 is a discharge port that blows air, which has been heat-exchanged by the indoor heat exchanger 8, by the indoor blower fan 9 and blows it downward in the room.

  The wind direction louver 19 is a member that deflects the direction of air blown out from the air outlet 10. The wind direction louver 19 includes an upper vertical wind direction louver 19 a disposed above the downstream wind tunnel 18 in the vicinity of the outlet 10, and a lower vertical wind direction louver disposed below the downstream wind tunnel 18 in the vicinity of the outlet 10. 19b and a left / right wind direction louver 19c disposed on the back side of the downstream wind tunnel 18b of the lower vertical wind direction louver 19b. The lower vertical wind direction louver 19b is closed by the control unit (not shown) when the operation is stopped and opens the air outlet 10 during the cooling operation or the heating operation. The left / right wind direction louver 19c is controlled by a control unit (not shown), and can deflect the blown air Ai1 in the left / right direction.

  The installation plate 20 is a metal plate member having a latching portion 20a for attaching the indoor unit 7 to the indoor wall surface R2, and is fixed to the indoor surface R1 (wall surface R2) using screws or the like. When the indoor unit 7 is attached to the indoor wall surface R2, it is fixed to the indoor surface R1 (wall surface R2) by hooking the cabinet 17 on the back surface of the indoor unit 7 to the installation plate 20. The height at which the indoor unit 7 is installed is preferably 50 mm or more from the ceiling surface R3. Depending on the height of the ceiling of the room to be installed, the distance from the ceiling surface R3 may be closer than 50 mm. A wall surface cover insertion hole 20b through which the wall surface cover 30 is inserted is formed in a flat portion of the latching portion 20a formed in a substantially L shape when viewed from the vertical end surface. The wall surface cover insertion hole 20b is formed of a long slit-shaped hole that is long in the horizontal direction.

  A drain pan 16 that receives water condensed in the indoor heat exchanger 8 is disposed below the indoor heat exchanger 8. The cabinet 17 and the drain pan 16 constitute a downstream wind tunnel 18 for forming the air passage 15 on the downstream side of the indoor blower fan 9. The cabinet 17 is a plate member that forms a housing of the indoor unit 7, and is provided at a position near the back surface of the indoor unit 7. A storage space 21 for storing and arranging a wall cover 30, a position adjustment mechanism 36, and a height adjustment mechanism 37, which will be described later, is formed between the rear surface of the cabinet 17 and the installation plate 20. The outlet 10 is formed at the lower end of the downstream wind tunnel 18.

≪Wall cover≫
As shown in FIG. 2, the wall surface cover 30 is a member for suppressing dust from adhering to the indoor wall surface R <b> 2 and the ceiling surface R <b> 3 above the back surface of the indoor unit 7. The wall surface cover 30 includes a cover base portion 31 disposed in a state that can move up and down in the indoor unit 7, an intermediate cover portion 32 disposed on the front end side of the cover base portion 31, and a front end side of the intermediate cover portion 32. And a position adjusting mechanism 36 that adjusts the position of the intermediate cover 32 and the tip cover 33 in the front-rear direction, and a height adjusting mechanism 37 that adjusts the height of the wall cover 30. ing. The wall surface cover 30 is located above the upper surface suction port 11 in the vertical direction (arrow a and b direction) on the rear side of the upper surface suction port 11 of the indoor unit 7 so as to cover the indoor surface R1 around the upper surface suction port 11. It is arranged so that it can appear and disappear (see FIGS. 2 and 3).

As shown in FIG. 3, the wall surface cover 30 is formed in a shape extending vertically from the wall surface R2 side of the upper surface suction port 11 toward the floor surface direction (vertical direction), and along the wall surface R2 when viewed in a longitudinal section. It extends in the vertical direction.
In addition, the wall cover 30 includes a position adjustment mechanism 36 that can reduce the gap with the wall R2 on the back side of the indoor unit 7 in order to more completely prevent dust from adhering to the wall R2. Yes.
Further, the wall surface cover 30 includes a height adjusting mechanism 37 which can adjust the height of the wall surface cover 30 according to the size of the gap between the indoor unit 7 and the ceiling surface R3.

  As shown in FIG. 4, the wall cover 30 includes three flat cover base parts 31, an intermediate cover part 32, and a tip cover part 33 that are rotatably connected by a first hinge 34 and a second hinge 35. The whole is formed long in the horizontal direction. The length of the wall surface cover 30 in the left-right direction is, for example, substantially the same length as the upper surface inlet 11 of the indoor unit 7.

  In addition, it is preferable that the wall surface cover 30 is formed in the shape where the surface is smooth. By forming in this way, it is possible to prevent dust, oil, soot and the like in the air from adhering to the wall surface cover 30, and to make the wall surface cover 30 difficult to get dirty. Note that the smooth surface-shaped structure includes a resin, a metal, and the like. In addition, a smooth surface may be formed by forming a resin film or a metal film on the surface of the wall cover 30.

  As shown in FIGS. 3 and 4, the cover base portion 31 is made of a rectangular flat plate material that is long in the horizontal direction. The cover base portion 31 is provided with a rack 37a of a height adjustment mechanism 37 extending in the vertical direction at a position near the left and right ends of the surface on the indoor (indoor unit 7) side. The lower half of the first hinges 34 and 34 is provided at a position near the left and right of the upper end portion of the cover base portion 31.

  As shown in FIG. 4, the upper half of the first hinges 34 and 34 fixed to the cover base portion 31 is fixed to the cover base portion 31 at the intermediate cover portion 32 at a position closer to the left and right of the lower end portion. On the other hand, it is rotatably connected. The intermediate cover part 32 is formed in the same length as the cover base part 31 and the tip cover part 33 in the left-right direction, and the length in the vertical direction is longer than the lengths of the cover base part 31 and the tip cover part 33. Is also formed short. The intermediate cover portion 32 is disposed at a position where the intermediate cover portion 32 protrudes and retracts with respect to the wall surface cover insertion hole 20b of the installation plate 20 when the wall surface cover 30 is raised and lowered by the height adjusting mechanism 37 (see FIGS. 2 and 3). ).

  The upper end half of the second hinges 35 and 35 fixed to the intermediate cover part 32 is fixed to the front end cover part 33 at a position closer to the left and right of the lower end part, and is connected to the intermediate cover part 32 so as to be rotatable. Has been. The tip cover portion 33 is formed such that the length in the vertical direction is shorter than the cover base portion 31 and longer than the length of the tip cover portion 33. When the wall cover 30 is raised by the height adjustment mechanism 37, the tip cover part 33 projects so as to cover the entire wall surface R2 above the indoor unit 7, and when lowered, the lower half of the tip cover part 33 is It is drawn into the storage space 21 side in the wall surface cover insertion hole 20b (see FIGS. 2 and 3).

As shown in FIG. 4, the first hinge 34 is a hinge member provided between the cover base portion 31 and the intermediate cover portion 32, and the cover base portion 31 and the welding means etc. It is fixed to the intermediate cover part 32.
The second hinge 35 is a hinge member provided between the intermediate cover portion 32 and the tip cover portion 33, and is fixed by the same means as the first hinge 34.
The first hinge 34 and the second hinge 35 can be bent around the shaft portions 34a, 35a disposed in the horizontal direction at the center in the vertical direction, and the cover base portion 31 and the intermediate cover portion 32 can be bent. If it can connect, the shape and attachment means will not be specifically limited.

<Position adjustment mechanism>
The position adjusting mechanism 36 allows the intermediate cover portion 32 and the tip cover portion 33 to be bent in the front-rear direction by the rotation of the first hinge 34 and the second hinge 35 so that the tip cover portion 33 is positioned on the wall surface R2 side. , And the side away from the wall surface R2 (front-rear direction). The position adjusting mechanism 36 can bring the front and back positions of the wall surface cover 30 close to the vicinity of the wall surface R2 by bending the shaft portions 34a and 35a like joints.

<Height adjustment mechanism>
The height adjustment mechanism 37 is an adjustment mechanism for adjusting the height of the front end portion of the wall surface cover 30. The height adjusting mechanism 37 includes a rack 37a provided on the cover base 31 and a pinion 37b rotatably supported by the cabinet 17 of the indoor unit 7 by a support member (not shown) and meshed with the rack 37a. Are mainly configured by a rack and pinion mechanism. As shown in FIG. 2, when the height adjustment mechanism 37 is pulled out by holding the wall cover 30 by hand, the pinion 37b rotates and the wall cover 30 with the rack 37a moves upward, and the tip cover portion The height position of 33 can be raised. If the wall surface cover 30 is pushed downward, as shown in FIG. 3, the wall surface cover 30 can be stored in the storage space 21 on the back surface in the indoor unit 7, and the height position of the tip cover portion 33 can be lowered. .

Contrary to the arrangement of the rack and pinion mechanism, the height adjusting mechanism 37 is arranged with a gear such as a pinion 37b on the back surface of the cabinet 17, and a gear with an uneven structure like the rack 37a is arranged on the wall surface cover 30. This can also be realized by the provided gear mechanism.
Further, the height adjusting mechanism 37 may be a slide mechanism having a two-sheet structure in which plate members are slidably disposed in two wall surface covers 30 disposed in the distal direction.

≪Action≫
Next, an operation of the air conditioner 100 according to the embodiment of the present invention will be described with reference mainly to FIGS. 2 and 3.
For example, as shown in FIG. 3, when the wall cover 30 is not used, the wall cover 30 is pushed in by hand, and the wall cover 30 is immersed in the storage space 21 in the indoor unit 7.

  As shown in FIG. 2, when using the wall surface cover 30, the front end cover portion 33 is grasped by hand and the wall surface cover 30 is pulled out from the storage space 21 and is disposed so as to cover the wall surface R <b> 2 with the front end cover portion 33. The distal end cover portion 33 is configured to rotate the intermediate cover portion 32 or the distal end cover portion 33 around the first hinge 34 or the second hinge 35 of the position adjusting mechanism 36 to thereby move the distal end cover portion with respect to the wall surface R2. The position of 33 in the front-rear direction can be adjusted. For this reason, the front-end | tip cover part 33 can be arrange | positioned in the state contact | abutted to wall surface R2, or can be arrange | positioned in the state spaced apart from wall surface R2.

  As shown in FIGS. 2 and 3, when the wall surface R <b> 2 seems to be contaminated by dust or the like, the wall surface R <b> 2 can be prevented from being contaminated by pulling out the wall surface cover 30. When it is not necessary to use the wall surface cover 30, the wall surface cover 30 is pushed into the storage space 21 and stored.

  The plate-like wall surface cover 30 has a structure that can be stored in the storage space 21 provided inside the back side of the indoor unit 7, so that the indoor unit 7 can be kept compact even when the indoor unit 7 is provided. Can do.

[Second Embodiment]
Next, an air conditioner according to a second embodiment of the present invention will be described based on FIGS. The same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The second embodiment differs from the first embodiment in that the wall surface cover 40 shown in FIG. 5 is the upper end of the back wall surface cover portion 40A that is the same as the wall surface cover 30 (see FIG. 2) of the first embodiment. In addition, the indoor unit 7 has a ceiling surface cover portion 40B having a shape extending substantially horizontally in front of the indoor unit 7, that is, a shape along the ceiling surface R3.

  In 1st Embodiment, adhesion of dust was suppressed only by wall surface cover 30 (refer FIG. 2) to wall surface R2 between the indoor unit 7 and ceiling surface R3. In the wall surface cover 40 of the second embodiment, the ceiling surface cover portion 40B is provided on the front end side of the same back wall surface cover portion 40A as the wall surface cover 40, and the ceiling surface R3 is also covered with the ceiling surface cover portion 40B. Since air containing dust flows between the machine 7 and the ceiling surface R3, it is possible to prevent dust from adhering to the ceiling surface R3.

  Similarly to the wall surface cover 30 of the first embodiment, the wall surface cover 40 includes a position adjustment mechanism 46 that adjusts the position in the front-rear direction and a height adjustment mechanism 47. For this reason, the wall surface cover 40 can adjust the position of the front-end | tip part to an up-down direction and the front-back direction.

  Further, the back wall surface cover portion 40A and the ceiling surface cover portion 40B are made of, for example, a resin plate member having a smooth surface shape. Further, the wall surface cover 40 may be formed of a metal plate member having a smooth surface, a smooth metal film, or a plate member having a smooth resin film.

  Thereby, the wall surface cover 40 can suppress that dust adheres to the back wall surface cover part 40A and the ceiling surface cover part 40B, and makes it difficult to get dirty like the first embodiment. In addition, since the airflow resistance of the wall surface cover 40 is reduced by the smooth surface, the amount of the intake air Ai2 that the indoor unit 7 sucks can be increased, and the amount of air that can be heat-exchanged can be increased. Thereby, the effect of the cooling and heating which the air conditioner 100 performs can be enlarged.

  As shown in FIG. 9, the back wall surface cover portion 40 </ b> A of the wall surface cover 40 is configured by a plate member that includes a cover base portion 41, an intermediate cover portion 42, and a tip cover portion 43. The ceiling surface cover part 40B includes a connection cover part 40B1 that is rotatably connected to the tip cover part 43 via a hinge 44c, and a long hole 40B2b that is connected to a slide pin 40Ba provided in the connection cover part 40B1. The first slide cover portion 40B2 having the first slide cover portion 40B2 and the second slide cover portion 40B3 having the long hole 40B3b connected to the slide pin 40B2a provided in the first slide cover portion 40B2 are disposed on the distal end side of the back wall surface cover portion 40A. It is connected to extend freely.

  As shown in FIG. 5, the wall surface cover 40 composed of a plurality of plate members connected in this way extends the back wall surface cover portion 40A upward, and extends the ceiling surface cover portion 40B forward to form an L-shape. When used in a bent state, it is possible to prevent dust from adhering to the wall surface R2 and the ceiling surface R3 above the indoor unit 7.

  Further, as shown in FIG. 8, the wall surface cover 40 is opened to the upper surface of the indoor unit 7 by lowering the back wall surface cover portion 40 </ b> A and the ceiling surface cover portion 40 </ b> B bent in an L shape as they are. By closing and covering the upper surface suction port 11, dust can be prevented from entering the upper surface suction port 11.

≪Length adjustment mechanism≫
As shown in FIG. 9, the wall surface cover 40 is further provided with a length adjusting mechanism 48 for adjusting the length of the ceiling surface cover part 40B, so that the length of the ceiling surface cover part 40B in the front-rear direction can be expanded and contracted. Adjustable. For example, the length adjusting mechanism 48 makes the ceiling surface cover portion 40B extendable by using a slide mechanism made of a plurality of slidable plate members so that the length of the wall surface cover 40 becomes an appropriate length. Can be varied.

  As shown in FIGS. 9 and 10, the length adjusting mechanism 48 includes, for example, a sliding pin 40Ba provided on the connection cover portion 40B1 of the ceiling surface cover portion 40B, and a first sliding of the sliding pin 40B1a. A long hole 40B2b of the slide cover portion 40B2, a slide pin 40B2a provided in the first slide cover portion 40B2, and a long hole 40B3b of the second slide cover portion 40B3 in which the slide pin 40B2a slides are provided. It is configured.

By configuring the length adjusting mechanism 48 in this way, the first slide cover portion 40B2 can slide with respect to the connection cover portion 40B1 by the length of the long hole 40B2b, and the second slide cover portion 40B3. However, it becomes possible to slide with respect to the first slide cover portion 40B2 by the length of the long hole 40B3b.
For this reason, when the entire ceiling surface cover portion 40B is pulled out, the tip side portion of the wall surface cover 40 can be disposed above the indoor unit 7 as shown in FIGS.

<Position adjustment mechanism>
The position adjustment mechanism 46 is connected to the first hinge 44a, the second hinge 44b, and the third hinge 44c, and the first hinge 44a, the second hinge 44b, and the third hinge 44c so as to be rotatable (foldable) in the front-rear direction. The intermediate cover part 42, the tip cover part 43, and the connection cover part 40B1 are provided. The position adjustment mechanism 46 rotates the intermediate cover part 42, the tip cover part 43, and the connection cover part 40B1 around the first hinge 44a, the second hinge 44b, and the third hinge 44c, thereby causing the intermediate cover part 42, The positions of the cover part 43 and the connecting cover part 40B1 can be finely adjusted in the front-rear direction and can be folded.

  For example, as shown in FIG. 6, the ceiling surface cover portion 40B moves the second slide cover portion 40B3 and the first slide cover portion 40B2 to the connection cover portion 40B1 side and rotates the hinge 44c. It can be folded into a shape along the wall surface cover portion 40A. As shown in FIG. 7, if the ceiling surface cover portion 40 </ b> B in the folded state is pushed downward, it can be stored in the storage space 21 of the indoor unit 7.

≪Modification≫
The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea. The present invention extends to these modifications and changes. Of course. Further, the present invention is not limited to the individual ones of the first and second embodiments, and the above-described first and second embodiments may be appropriately combined.
FIG. 11 is a perspective view showing a modified example of the wall surface cover. FIG. 12 is an enlarged longitudinal sectional view showing a modified example of the wall surface cover.

  For example, the position adjusting mechanism 36 for adjusting the position of the wall surface cover 30 and the height adjusting mechanism 37 for adjusting the height shown in FIG. 2 described in the first embodiment may be manually operated, as shown in FIG. Alternatively, an electric drive device 59 provided with an electric motor 59a and a reduction gear mechanism 59c may be arranged so that adjustment is performed electrically by remote control operation.

In that case, the wall surface cover 50 may be driven ON / OFF according to the operation state of the indoor unit 7 to drive the electric drive device 59 that expands and contracts the wall surface cover 50. In addition, when the indoor unit 7 is in operation, the electric drive device 59 extends the wall cover 50 upward from the rear of the upper surface inlet 11 (see FIG. 2) along the indoor surface R1 (wall surface R2). The wall surface cover 50 is disposed so as to cover the indoor surface R1 around the upper surface suction port 11. Further, when the indoor unit 7 is not operating, the extended wall surface cover 50 is shortened, and the upper surface inlet 11 is covered with the ceiling surface cover portion 50B.
In this way, it is possible to efficiently prevent dust from entering the interior of the indoor unit 7.

  Further, the length adjusting mechanism 48 of the second embodiment shown in FIGS. 9 and 10 includes the slide pins 40Ba and 40B2a of the connection cover portion 40B1 and the first slide cover portion 40B2, the first slide cover portion 40B2 and the second slide cover portion 40B2. Although the wall surface cover 40 is contracted by the long holes 40B2b and 40B3b of the slide cover portion 40B3, the length adjustment mechanism 58 of the wall surface cover 50 shown in FIGS. 11 and 12 may be used.

  For example, as shown in FIGS. 11 and 12, the length adjustment mechanism 58 includes a guide piece 50B1a and a locking piece 50B1b formed at both ends of the connection cover portion 50B1 of the ceiling surface cover portion 50B, and a first slide cover. The guide piece 50B2a, the locking piece 50B2b, and the stopper 50B2c formed at both ends of the portion 50B2, and the stopper 50B3c formed at the lower end of the second slide cover portion 50B3.

Both ends of the second slide cover portion 50B3 are slidably disposed in a U-shaped guide piece 50B2a as viewed in cross section, and when the second slide cover portion 50B3 is pulled out, the stopper 50B3c is engaged. It is provided to be locked to the stop piece 50B2b.
The first slide cover portion 50B2 has a U-shaped guide piece 50B2a inserted in a slidable manner in the U-shaped guide piece 50B1a in a cross-sectional view of the connecting cover portion 50B1. The stopper 50B2c is provided so as to be locked to the locking piece 50B1b when the first slide cover portion 50B2 is pulled out.
The base end side of the connection cover portion 50B1 is rotatably connected to the distal end cover 53 by a hinge 54c.

  On the base end side of the length adjusting mechanism 58, the first hinge 54a, the second hinge 54b, and the third hinge 54c, and the first hinge 54a, the second hinge 54b, and the third hinge 54c are rotatable in the front-rear direction. An intermediate cover portion 52, a tip cover portion 53, and a connection cover portion 50B1 that are connected to each other (bendable) and a position adjusting mechanism 56 that includes the intermediate cover portion 52 and the connection cover portion 50B1 are provided. For this reason, the intermediate cover part 52, the tip cover part 53, and the connection cover part 50B1 are adjusted in position in the front-rear direction or folded by changing the connection angle of the connection part, as in the second embodiment. be able to.

  Even if the length adjusting mechanism 58 is configured in this manner, the first slide cover portion 50B2 and the second slide cover portion 50B3 can be assembled so as to slide and expand and contract with respect to the connection cover portion 50B1.

≪Other variations≫
For example, the wall surface covers 30 and 40 described in the first embodiment and the second embodiment may be detachable from the indoor unit 7. The wall surface covers 30 and 40 are attached to and removed from the indoor unit 7, so that when the user feels that the wall surface cover 30 is necessary when using the air conditioner 100, the wall surface covers 30 and 40 are provided. Just place and use. And when not using the indoor unit 7 over a long period of time, or when there is little dust and the wall surface covers 30 and 40 are unnecessary, you may make it use the indoor unit 7 by removing the wall surface covers 30 and 40. .

  Thus, by making the wall surface cover 30 removable, when the wall surface cover 30 is contaminated by dust, the wall surface cover 30 can be removed and cleaned at a place where the cleaning work can be easily performed. Cleaning the wall surface cover 30 eliminates the need for work at a high place, and thus can reduce the risk to the user.

  Further, although the clearance between the indoor unit 7 and the ceiling surface R3 is generally 50 mm or more, it tends to be relatively narrow, so that it is difficult to perform the cleaning work with the wall surface cover 30 attached to the indoor unit 7. Is expected. By making the wall surface cover 30 removable, it is possible to eliminate such problems and facilitate the cleaning work.

  Moreover, in the said embodiment, as shown in FIG. 3, although the case where the storage space 21 which accommodates the wall surface covers 30 and 40 was provided in the back surface of the indoor unit 7 was demonstrated, a storage place is as shown in FIG. The upper surface side of the indoor unit 7 may be used.

  When the wall surface cover 40 can be stored on the upper surface side of the indoor unit 7, as shown in FIG. 5, the ceiling surface cover portion 40B is disposed at a position close to the ceiling surface R3 during cooling and heating operations. When the operation is stopped, as shown in FIG. 8, the ceiling surface cover part 40 </ b> B may be arranged at a position close to the upper surface inlet 11 of the indoor unit 7.

  Thereby, at the time of air_conditioning | cooling and heating operation, it can suppress that stain | pollution | contamination adheres to indoor surface R1 and ceiling surface R3 by the dust contained in intake air Ai2 of the indoor unit 7. FIG. When the operation is stopped, the intrusion of dust from the upper surface inlet 11 of the indoor unit 7 can be suppressed. Switching between the ceiling proximity position of the ceiling surface cover portion 40B and the proximity position of the upper surface suction port 11 may be performed manually, or may be automatically switched depending on the operation state.

  Further, the wall surface cover 40 has a drive mechanism including a small electric motor and gears on the shaft and bearing portion of the hinge 40c at the base of the ceiling surface cover portion 40B. It can also be folded electrically.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Compressor 3 Four-way valve 4 Outdoor heat exchanger 5 Outdoor ventilation fan 6 Expansion valve 7 Indoor unit 8 Indoor heat exchanger 9 Indoor ventilation fan 10 Outlet 11 Upper surface inlet 14 Filter 15 Air path 19 Wind direction louver 30, 40, 50 Wall cover 40B, 50B Ceiling surface cover portion 41, 51 Cover base portion 59 Electric drive device 100 Air conditioner R1 Indoor surface R2 Wall surface R3 Ceiling surface

Claims (12)

An air conditioner provided with an indoor unit provided on an indoor wall surface,
The indoor unit is arranged on the upper surface side of the indoor unit, and an upper surface inlet for sucking indoor air;
An indoor heat exchanger that exchanges heat with the air sucked from the upper surface suction port;
A filter for removing dust from the air sucked from the upper surface suction port;
A blowout port for blowing out the air heat-exchanged by the indoor heat exchanger into the room;
An indoor fan provided on the air path from the upper surface inlet to the outlet;
A wind direction louver that deflects the direction of the air blown from the air outlet;
A wall cover disposed at a rear position of the upper surface suction port,
The air conditioner is characterized in that the wall cover is disposed above the upper surface suction port so as to cover an indoor surface around the upper surface suction port.   2. The air conditioner according to claim 1, wherein the wall surface cover is disposed so that a position of a front end portion thereof can be adjusted in a vertical direction or a front-rear direction.   The air conditioner according to claim 1 or 2, wherein the wall cover is adjustable in height. The wall surface cover has a ceiling surface cover portion that is substantially horizontal at an upper end portion and extends in a forward direction of the indoor unit,
The air conditioner according to any one of claims 1 to 3, wherein the ceiling surface cover portion is disposed so as to cover a ceiling surface of the room around the upper surface suction port.   The air conditioner according to any one of claims 1 to 4, wherein the ceiling surface cover part is extendable in the front-rear direction of the indoor unit.   The said ceiling surface cover part is provided so that it can fold in the shape along the cover base | substrate part arrange | positioned at the base end side of the said wall surface cover, The Claim 4 or Claim 5 characterized by the above-mentioned. Air conditioner.   The air conditioner according to any one of claims 4 to 6, wherein the wall surface cover is disposed so as to be housed in an interior, a back surface portion, or an upper surface portion of the indoor unit.   The said wall surface cover was equipped with the electric drive apparatus which expands and contracts the said wall surface cover by turning on and off according to the driving | running state of the said indoor unit, The Claim 4 thru | or 7 characterized by the above-mentioned. Air conditioner. When the indoor unit is in operation, the electric drive device extends the wall cover upward from the rear of the upper surface suction port along the indoor surface, and the wall cover covers the periphery of the upper surface suction port. Arranged to cover the indoor surface of
The said wall surface cover is shortened and it arrange | positions so that the said upper surface inlet may be covered by the said ceiling surface cover part, when the said indoor unit has stopped operation | movement. The air conditioner as described in any one of.   The air conditioner according to any one of claims 4 to 9, wherein the wall cover has a smooth surface.   The wall cover is made of a metal plate member having a smooth surface, a plate member having a smooth metal film, a resin plate member having a smooth surface, or a plate member having a smooth resin film. The air conditioner according to any one of claims 4 to 10.   The air conditioner according to any one of claims 4 to 11, wherein the wall cover is detachably disposed on the indoor unit.

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