JP2008209099A - Ceiling-embedded air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling-embedded air conditioner having a decorative panel improved in design. <P>SOLUTION: In this ceiling-embedded air conditioner, the decorative panel 7 is attached downside of a unit body 2, and air heat exchanged in a heat exchanger 21 is delivered from the blowout port 4 of the decorative panel 7 to the inside of a room. The decorative panel 7 includes a base portion 49 attached to the unit body 2, and a flat panel 50 vertically movably configured and positioned below the base portion 49 during operation to expose a suction port 3 to the surface in a room of the decorative panel 7 while hiding the suction port 3 between the base portion 49 and the flat panel during shutdown. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a ceiling-embedded air conditioner having a decorative panel provided with an inlet and an outlet.

  A typical ceiling-embedded air conditioner includes a unit main body that houses a blower, a heat exchanger, and the like. The unit main body is inserted from an opening provided in an indoor ceiling to form a space behind the ceiling. It is attached using hanging hardware. After the unit body is attached, a decorative panel is attached to the lower side of the unit body so as to close the opening of the ceiling from the lower side. This decorative panel is provided with an air outlet in four directions, and a suction grill provided at a central portion surrounded by the air outlet, and the air inlet is provided with an air inlet. The room air sucked from the suction port is sent out from the air outlet after heat exchange is performed by the heat exchanger.

Further, in the above-described ceiling-embedded air conditioner, the filter is arranged so as to cover the back side of the suction port, and when the filter is cleaned and / or the filter is replaced, the suction grill is lowered to the lower side. Some of them facilitate the cleaning of the filter and / or the replacement work of the filter. The suction grille is provided with a suction port for taking in indoor air, and the suction grille is lowered only when the filter is cleaned and / or the filter is replaced (for example, see Patent Document 1).
JP 2004-138261 A

  However, the suction port formed in the suction grill described above is easily contaminated by the sucked room air, and dust and dirt attached to the filter may be seen from the gap of the suction grill, and the shape of the suction grill is also complicated. For this reason, the design of the decorative panel is impaired when viewed from the indoor side.

  This invention is made | formed in view of the situation mentioned above, and it aims at providing the ceiling embedded type air conditioner which can improve the designability of a decorative panel.

In the present invention, a decorative panel is attached to the lower side of the unit main body, and in the ceiling-embedded air conditioner that sends out the air heat-exchanged by a heat exchanger into the room from the outlet of the decorative panel, the decorative panel includes: A base portion attached to the unit main body and configured to be movable up and down, while concealing the suction port between the base portion during operation stop, and positioned under the base portion during operation, It is comprised with the flat panel which makes a room | chamber surface expose a suction inlet.
According to this configuration, the suction port is exposed to the indoor side only during operation of the ceiling-embedded air conditioner. Further, the shape of the surface of the decorative panel (base and flat panel) is not complicated.

Moreover, the filter attached to the said unit main body side by the latch mechanism which is arrange | positioned above the said flat panel and is latched when it presses upwards can also be provided.
According to this configuration, the filter can be easily removed when the filter is cleaned and / or replaced.

Further, the flat panel may be formed with a pressing support portion for pressing the filter upward and supporting the filter after the latch is released.
According to this structure, while being able to press a filter, the filter removed from the main body side can be supported with a flat panel.

The pressing support part and the filter may be provided with a second latch mechanism that is latched when pressed upward.
According to this structure, the filter removed from the main body side can be held by the flat panel.

On the other hand, a hanging strap that suspends the flat panel and a lifting mechanism that lifts and lowers the flat panel by lifting and lowering the hanging strap may be provided.
According to this configuration, the flat panel can be easily moved up and down.

Further, the flat panel may be moved further below the operating position during filter cleaning and / or filter replacement.
According to this configuration, the filter can be replaced at a lower position where the filter can be easily cleaned and / or replaced. Here, the filter may be either a single piece of mesh-like plate material or a filter frame material in which the single product is surrounded by a frame-like member in order to reinforce the single piece of plate material.

According to the present invention, in the ceiling-embedded air conditioner in which the decorative panel is attached to the lower side of the unit body, and the air exchanged by the heat exchanger is sent out from the outlet of the decorative panel to the room.
The decorative panel is configured to be movable up and down with a base attached to the unit main body, and hides the suction port between the base and the base during operation stop, and is positioned below the base during operation. And a flat panel that exposes the suction port on the indoor surface of the decorative panel, so that the suction port can be hidden from the indoor side during the operation stop, and the indoor side during the operation stop. When the makeup panel is viewed from, the entire makeup panel can be shown in a clean shape. In addition, since it is composed of a flat panel, it is possible to give a clean and slim impression. By these, the designability of a decorative panel can be improved. Moreover, since the suction port is formed during the operation, the same air-conditioning operation as the conventional one can be performed. Furthermore, since the suction port cannot be seen from the indoor side during the operation stop, even if the suction port is dirty, the appearance of the entire decorative panel is not deteriorated.

  Further, the filter is cleaned and / or replaced by providing a filter disposed on the unit main body side by a latch mechanism that is disposed above the flat panel and is released when the latch is pressed upward. At this time, the filter can be easily removed by pressing the filter upward, and convenience is improved. Further, the weight of the filter or the like can be held by the latch mechanism. Here, the filter may be either a single piece of mesh-like plate material or a filter frame material in which the single product is surrounded by a frame-like member in order to reinforce the single piece of plate material.

  Hereinafter, a decorative panel of a ceiling-embedded air conditioner according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view of an indoor unit of a four-way ceiling cassette type air conditioner.

  The ceiling-embedded air conditioner 1 has a sheet metal unit main body 2 (see FIG. 1) housed inside the ceiling, and is attached to the unit main body 2 from below, and has outlets 4 on the four sides of the outer peripheral portion. A decorative panel 7 is provided. The unit body 2 is suspended from a ceiling beam by suspension bolts 24.

  A blower 11 is provided in the center of the unit body 2. The blower 11 includes a turbo fan 12 and a fan motor 14 attached to the top plate 13. Further, a nozzle port 15 for guiding indoor air sucked from a suction port 3 (see FIG. 2B), which will be described in detail later, to the turbo fan 12 is provided below the blower 11.

On the discharge side of the turbo fan 12, a plate fin type heat exchanger 21 arranged in an annular shape so as to surround the turbo fan 12 is disposed. Further, below the heat exchanger 21, a styrene foam drain pan 16 for receiving drain water discharged from the heat exchanger 21 is disposed.
Between the heat exchanger 21 and the air outlet 4, an air guide portion 23 that guides the air heat-exchanged by the heat exchanger 21 to the air outlet 4 is formed. In addition, a heat insulating material 22 is wound around the outer peripheral surface of the unit main body 2 to prevent condensation due to air after heat exchange.

Fig. 2 (a) is a perspective view of a state where the ceiling-embedded air conditioner is stopped from the indoor side, Fig. 2 (b) is a perspective view during operation, and Fig. 2 (c) is a filter replacement. The perspective view of the state of time is shown.
As shown in FIGS. 2A to 2C, the decorative panel 7 is formed in a substantially quadrangular shape, and is surrounded by a base portion 49 formed in a frame shape along the four sides and the base portion. It is comprised with the flat panel 50 located in the part. The base portion 49 is provided with four outlets 4 along the four sides, and is fixed to the unit body 2.

The flat panel 50 has a substantially quadrangular (square) shape, and is formed in a single plate shape in which the front surface and the back surface are flat. A surface 50a (a surface in contact with the indoor side, a decorative surface) of the flat panel 50 is attached so as to be substantially parallel to the ceiling surface. Further, rising edges 50c (see FIGS. 4 and 5) facing upward are formed at the edges of the four sides of the flat panel 50, respectively.
On the other hand, the surface 49a of the base 49 (the surface in contact with the indoor side; a decorative surface) has a gently curved surface that inclines toward the indoor side (downside) from the outer edge of the four sides toward the rising portion 50c of the flat panel 50. Have. The surface 50a of the flat panel 50 and the surface 49a of the base 49 are not conspicuous when viewed from the indoor side, as shown in FIG. More specifically, the suction port 3 (see FIG. 2B and FIG. 6) is hidden by the surface 49a of the base 49, the rising portion 50c of the flat panel 50, and the surface 50a of the flat panel 50. 50a is shown to be continuous with the surface 49a of the base 49.

  It is preferable that the surface 50a of the flat panel 50 and the surface 49a of the base 49 be configured to be substantially flush with each other so that no step is provided between the surface 50a and the surface 49a. The rising portion 50c prevents a gap (suction port 3) from being formed between them, and the rising portion 50c may be unnecessary by making the surface 50a and the surface 49a the same surface.

FIG. 3 is an exploded perspective view showing attachment of the base 49 and the flat panel 50.
As shown in FIG. 3, a filter placement frame 60 and a filter 70 attached from above the filter placement frame 60 are provided on the upper side of the flat panel 50 (unit main body 2 side).

As shown in FIG. 3, on the back surface 50b of the flat panel 50 (the surface on the unit main body 2 side), two pulleys 51 are provided on each of the two opposing sides (four in total), and four corners of the back surface 50b. Four substantially cylindrical positioning projections 52 each extending upward from the top, and small latches 53 (second latch mechanisms) provided in the vicinity of the positioning projections 52 (four in total). I have.
As shown in FIG. 3, a hanging strap 31, which will be described in detail later, is wound around the pulley 51, and the flat panel 50 is suspended downward by the hanging strap 31.

  As shown in FIG. 3, the filter mounting frame 60 has a substantially square shape like the flat panel 50, and an opening 61 is formed at the center thereof. At the four corners of the opening 61, there are provided guide portions 62 corresponding to the positions of the positioning projections 52 of the flat panel 50 and projecting upward from the upper side surface of the filter mounting frame 60. The guide portion 62 has a cylindrical shape, and the positioning protrusion 52 can move up and down in the guide portion 62, while the inner peripheral surface of the guide portion 62 is the outer periphery of the positioning protrusion 52. By contacting the surface, the horizontal position of the positioning protrusion 52 is determined.

  Further, on the lower side surface of the filter mounting frame 60, a small latch receiving portion 63 that is connected to or detached from the small latch 53 at a position corresponding to the small latch 53 of the flat panel 50 (see FIGS. 4, 6, and 7). Is provided. Furthermore, large latches 64 (latch mechanisms) projecting upward are provided at the four corners on the upper side surface of the filter mounting frame 60. In addition, a filter support 65 is formed inside the opening 61 of the filter mounting frame 60, and the filter 70 formed in substantially the same shape as the opening 61 is mounted from above the filter mounting frame 60. When this is done, the filter support 65 supports the filter 70. Further, the filter mounting frame 60 is formed with four holes 66 through which the hanging strap 31 for hanging the flat panel 50 is passed.

  In the above-described configuration, the filter mounting frame 60 and the filter 70 are configured separately. However, the filter mounting frame 60 may be configured integrally with the filter 70 (configured as a filter member). it can.

  The decorative panel 7 is provided with a large latch receiving portion 81 that is connected to or detached from the large latch 64 at a position corresponding to the large latch 64 of the filter mounting frame 60. Further, the decorative panel 7 is formed with four holes 82 (see FIG. 4) through which the hanging strap 31 for hanging the flat panel 50 is passed.

  The small latch 53 and the small latch receiving portion 63, and the large latch 64 and the large latch receiving portion 81 described above have the same function in a structure that is connected or disconnected. Specifically, the large latch 64 will be described. When the large latch 64 is pressed and pushed into the large latch receiving portion 81 from the lower side, the engaging portion provided inside latches, and the large latch 64 and the large latch 64 are large. The latch receiving portion 81 is connected. Further, when the large latch 64 is pressed again from the lower side, the latch of the engaging portion provided inside is released, and the large latch 64 and the large latch receiving portion 81 come out.

  On the other hand, as shown in FIG. 3, the two hanging straps 31 respectively provided on the two opposing sides are both directed upward. Both ends of the hanging strap 31 are connected to a lifting mechanism (not shown). This elevating mechanism is built in the unit main body 2 and includes a drive unit (not shown). The lift mechanism is driven by the drive unit and extends the other end of the hanging strap 31 downward or rewinds upward. Thus, the flat panel 50 is moved up and down within a predetermined range. In addition, a control board (not shown) is accommodated in the lifting mechanism, and is stopped (see FIG. 2 (a)), operated (see FIG. 2 (b)), and filter replacement (FIG. 2 (c)). (See) can be controlled individually. That is, it is a structure in which an elevating mechanism is provided at both ends of the hanging strap 31, and both the hanging strap 31 are fed out or rewound.

  Next, the operation of the ceiling-embedded air conditioner according to the embodiment of the present invention will be described with reference to FIGS. 4 is a cross-sectional view of the flat panel portion when the operation is stopped, FIG. 5 is an enlarged view of a portion A in FIG. 4, and FIG. 6 is a cross-sectional view of the flat panel portion during the operation (state of FIG. 2B). FIG. 7 shows a cross-sectional view of the flat panel portion when the filter is replaced (the state shown in FIG. 2C).

  The state shown in FIGS. 4 and 5 is a state in which the large latch 64 and the large latch receiving portion 81, the small latch 53 and the small latch receiving portion 63 are latched. Therefore, in this state, the flat panel 50, the filter mounting frame 60, and the filter 70 are not hung by the hanging strap 31 but are held by the large latch 64 and the small latch 53. In the state shown in FIG. 4, since the positioning protrusion 52 is located inside the guide portion 62, the filter mounting frame 60 and the flat panel 50 are positioned left and right.

  The operation when shifting from the operation stop state of FIG. 4 to the operation state of FIG. 6 will be described. First, using the lifting mechanism, the hanging strap 31 is rewound upward, and the flat panel 50 is lifted upward by the L1 dimension (stroke for releasing the latch of the small latch 53) shown in FIG. As a result, the latch of the small latch 53 is released. In FIG. 5, the dimension L2 indicates the stroke at which the latch of the large latch 64 is released. However, since the dimension L1 is smaller than the dimension L2, the small latch 53 is released without releasing the large latch 64. be able to.

  In a state where the small latch is released, the lifting / lowering mechanism is used to extend the hanging strap 31 downward, and the flat panel 50 is lowered downward to the L3 dimension (vertical dimension of the suction port 3; about 35 mm) shown in FIG. In the state of FIG. 6, the filter mounting frame 60 is positioned on the decorative panel 7 side (unit main body 2 side) while being held by the large latch 64. Further, the positioning protrusion 52 is in a state of being guided by the guide portion 62, and the horizontal position of the flat panel 50 is determined. Thereby, between the decorative panel 7 and the flat panel 50, the suction inlet 3 will expose in four directions. At this time, the indoor air W sucked from the suction port 3 passes through the filter 70 held on the unit main body 2 side and is sucked into the blower 11 (see FIG. 1), as shown in FIG. .

  Further, in order to change from the operation state of FIG. 6 to the operation stop state of FIG. 4, the hanging strap 31 is wound upward and the small latch 53 is latched by using an elevating mechanism. Also at this time, since the L1 dimension is smaller than the L2 dimension, the small latch 53 can be latched without releasing the large latch 64.

  On the other hand, the operation when shifting from the operation stop state of FIG. 4 to the state of cleaning and / or replacement of the filter of FIG. 7 will be described. First, the state of FIG. 4 is shifted to the operation state of FIG. 6 by the above-described operation. Next, the lifting / lowering mechanism is used to wind up the hanging strap 31 to cause the small latch 53 to be latched, and further to wind up by the L2 dimension. Thereby, the latch of the large latch 64 can be released. And it can be set as the state of FIG. 7 by extending | hanging the hanging strap 31 below using an raising / lowering mechanism.

  At this time, since the small latch 53 remains latched, the filter mounting frame 60 is lowered together with the flat panel 50 as shown in FIG. Further, since the positioning protrusion 52 is still guided by the guide portion 62, the left and right positions of the filter mounting frame 60 and the flat panel 50 are also determined. The weights of the filter mounting frame 60 and the flat panel 50 are all supported by the hanging strap 31.

  According to the ceiling-embedded air conditioner according to the embodiment of the present invention, the suction port 3 is hidden between the flat panel 50 and the base 49 during operation stop (the suction port 3 is not formed) and is in operation. Since the suction port 3 is exposed to the indoor side by lowering the flat panel 50, the suction port 3 cannot be seen when the decorative panel 7 is viewed from the indoor side during operation stop. The overall design can be improved. Moreover, since the room air W can be sucked in from the suction port 3 during operation, there is no problem in the air conditioning operation.

  Further, since the flat panel 50 having a flat surface on which no suction port is formed is used, the overall shape of the decorative panel 7 is not complicated, and the entire decorative panel 7 is both at the time of operation and when the operation is stopped. Can have a clean appearance. Furthermore, since the surface 50a of the flat panel 50 is disposed substantially parallel to the ceiling surface 6, the overall shape of the decorative panel 7 does not become complicated, and the decorative panel 7 is both at the time of operation and when the operation is stopped. The entire appearance can be made clean.

  Furthermore, since the filter mounting frame 60 is attached to the unit main body 2 side by the large latch 64, the filter 70 can be easily removed when the filter 70 is replaced. Further, the weight of the filter mounting frame 60 can be supported by the large latch 64, and no load is applied to the hanging strap 31.

  Moreover, since it has the hanging strap 31 which suspends the flat panel 50, and the drive part which raises / lowers the flat panel 50 by raising / lowering this hanging strap 31, by unwinding and extending the hanging strap 31, The flat panel 50 can be easily moved up and down.

The best mode for carrying out the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. .
In the present embodiment, without providing the small latch 53, the filter placement frame 60 may be placed on the flat panel during filter cleaning and / or replacement. In this case, the object of the invention is achieved by providing a pressing support portion having a function of pressing the filter mounting frame 60 upward and a function of supporting the filter mounting frame 60 after the large latch 64 is released. can do.
Moreover, although described so that the flat panel 50 might be suspended by the hanging strap 31, if it was the structure which can raise / lower the flat panel 50 up and down, the well-known technique generally used without using the hanging strap 31 ( For example, a sliding mechanism, rack and pinion driving, a lifting mechanism using a ball screw, etc.) can be used as appropriate.

It is side part sectional drawing which shows the ceiling embedded type air conditioner which concerns on embodiment of this invention. (A) is the perspective view which looked at the state at the time of a driving | operation stop from the indoor side, (b) is the perspective view of the state during driving | operation, (c) is the perspective view of the state at the time of filter replacement | exchange. It is a disassembled perspective view which decomposes | disassembles and shows a base, a flat panel, a grille, and a filter. It is side part sectional drawing which shows the state of the flat panel in operation stop. It is an enlarged view of the A section of FIG. It is side part sectional drawing which shows the state of the flat panel at the time of a driving | operation. It is side part sectional drawing which shows the state of the flat panel at the time of filter replacement | exchange.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling embedded type air conditioner 2 Unit main body 3 Suction port 4 Outlet 5 Ceiling hole 6 Ceiling surface 7 Cosmetic panel 11 Blower 12 Turbofan 13 Top plate 14 Motor for fan 15 Nozzle port 16 Drain pan 21 Heat exchanger 22 Heat insulating material 23 Wind guide portion 24 Bolt 31 Hanging strap 49 Base portion 49a Front surface 50 Flat panel 50a Front surface 50b Back surface 51 Pulley 52 Positioning projection 53 Small latch (second latch mechanism)
60 Filter mounting frame 61 Opening portion 62 Guide portion 63 Small latch receiving portion 64 Large latch (latch mechanism)
65 Filter support portion 66 Hole portion 70 Filter 81 Large latch receiving portion 82 Hole portion L1 Small latch stroke L2 Large latch stroke L3 Suction port size during operation W Indoor air

Claims (6)

In the ceiling-embedded air conditioner in which the decorative panel is attached to the lower side of the unit body and the air exchanged by the heat exchanger is sent out indoors from the outlet of the decorative panel.
The decorative panel is configured to be movable up and down with a base attached to the unit main body, and hides the suction port between the base and the base during operation stop, and is positioned below the base during operation. The ceiling-embedded air conditioner is configured with a flat panel that exposes a suction port on the interior surface of the decorative panel.   2. The ceiling-buried structure according to claim 1, further comprising a filter that is disposed above the flat panel and is attached to the unit main body by a latch mechanism that releases the latch when pressed upward. 3. Built-in air conditioner.   The ceiling embedding according to claim 2, wherein the flat panel is formed with a pressing support portion for pressing the filter upward and supporting the filter after the latch is released. Built-in air conditioner.   4. The ceiling-embedded air conditioner according to claim 3, wherein the pressing support part and the filter are provided with a second latch mechanism that is latched when pressed upward.   5. The apparatus according to claim 1, further comprising: a hanging strap that suspends the flat panel; and a lifting mechanism that lifts and lowers the flat panel by moving the hanging strap up and down. Embedded ceiling air conditioner.   6. The ceiling-embedded type according to claim 2, wherein the flat panel moves further below the operating position during filter cleaning and / or filter replacement. Air conditioner.

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