JP2019011928A - Ceiling embedded type air conditioner - Google Patents

Abstract

To provide a ceiling embedded type air conditioner which enables improvement of sanitation while improving designability.SOLUTION: A ceiling embedded type air conditioner includes: a housing 11 which houses sirocco fans 20 and a heat exchanger 17 and may be installed in a manner such that the housing 11 is embedded in a ceiling C; and a panel 12 covering a lower side of the housing 11 and exposed to an indoor space. The panel 12 has: a center part 32; and an inlet port and an outlet port 14 which are provided extending along a peripheral edge of the center part 32 and separated from each other. An inlet side space 16 communicating with the inlet port is provided in the housing 11, and the multiple sirocco fans 20 and intake side openings 22 of the sirocco fans 20 are provided in an inlet side space 16.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a ceiling-embedded air conditioner.

  Conventionally, ceiling-embedded air conditioners are known (for example, Patent Document 1). In an indoor unit of a ceiling-embedded air conditioner, a housing that houses a fan and a heat exchanger and opens downward is disposed on the indoor ceiling. A lower surface panel having a large opening at the center portion and fixed to the housing, and a suction grill and an air filter that cover the opening of the lower surface panel are provided on the lower side of the housing. The bottom panel is provided with air outlets along the four sides.

  During operation, air passes through the suction grill and air filter in the center of the bottom panel, sucks room air, heat is exchanged by the heat exchanger in the housing, and the air after heat exchange is sent into the room through each outlet. It is supposed to be.

JP 2007-285629 A

However, as described above, the conventional ceiling-embedded air conditioner has a structure in which the blow grill is arranged in a wide range of the central portion and the blow outlets are arranged around it. For this reason, the portion of the blow grill is visible from the room, and it is difficult to achieve a clean appearance.
In addition, the blow grill and air filter in the center part always sucks indoor air during the period of use. For this reason, dust easily adheres to and accumulates on the outer surface of the blow grill and the air filter, and dirt is likely to adhere, and there is a problem in terms of hygiene as well as a decrease in appearance.

  Therefore, an object of the present invention is to provide a ceiling-embedded air conditioner that is superior in hygiene while improving design.

  The ceiling-embedded air conditioner according to the first aspect of the present invention accommodates a fan and a heat exchanger, is embedded in the ceiling and can be installed, covers the lower part of the casing, and is exposed in the room. The panel includes a central portion, and a suction port and an air outlet that extend along the periphery of the central portion and are isolated from each other.

According to this aspect, since the suction inlet and the blower outlet are provided in the periphery of the center part of a panel, it is not necessary to provide a suction inlet and a blower outlet in the center part of a panel. Therefore, a large suction port is not arranged in a range that can be visually recognized by the user, and a clean impression can be given to the user. Furthermore, it is possible to suppress the dust attached to the suction port and the filter from falling downward by not arranging the suction port and the filter having a large area collected in the central portion of the panel.
Furthermore, by providing the suction port and the air outlet separately from each other, it is possible to reduce the possibility of occurrence of a short circuit in which the air blown from the air outlet is directly sucked into the suction port.

  According to the ceiling-embedded air conditioner of the second aspect of the present invention, a suction-side space communicating with the suction port is provided in the housing, and the plurality of fans and the fans in the suction-side space are provided. A suction side opening may be provided.

  According to this configuration, since the plurality of fans are provided in the suction side space communicated from the suction port, the entire suction flow rate and blowout flow rate can be ensured. In addition, since the suction side opening of each fan opens into the suction side space in the housing, it is easy to secure a wide suction side opening of each fan, and it is possible to prevent the flow resistance of the airflow from increasing, and the air suction sound In addition, an increase in noise such as a sound generated by a motor driving a fan impeller or a decrease in heat exchange performance can be suppressed.

  According to the ceiling-embedded air conditioner of the third aspect of the present invention, a plurality of sirocco fans arranged in the suction space as the fan and having one duct connected to the air outlet, And a filter provided in the housing, and a rotating shaft of the sirocco fan extends in a horizontal direction, and the duct extends downward and is connected to the outlet. It may be.

  According to this configuration, the sirocco fan is housed in a standing state in the suction side space that is partitioned and provided by the filter. Therefore, a plurality of sirocco fans can be arranged while suppressing the occupied space. Therefore, the inside of the housing can be simply and compactly configured even when a plurality of sirocco fans are used. Furthermore, for example, the same number of sirocco fans as the number of each outlet can be provided.

  According to the ceiling-embedded air conditioner of the fourth aspect of the present invention, the heat exchanger may be arranged along the outer surfaces of the plurality of sirocco fans.

  According to this configuration, since the heat exchanger is disposed along the outer surface of the sirocco fan, for example, the heat exchanger can be disposed at a position away from the inner surface of the housing. It is possible to secure a space between the inner surface and the pressure loss when air is sucked. Further, by arranging the heat exchanger so as to be bent along the outer surface of the sirocco fan, it is possible to secure a wider heat exchange area and improve the heat exchange performance.

According to the ceiling-embedded air conditioner of the fifth aspect of the present invention, the filter may have a single cloth shape surrounding the heat exchanger.
According to this configuration, for example, by rolling the filter in a roll shape, it is possible to obtain a filter with less dust and less pressure loss, and it is possible to provide an air conditioner with less impeller power without maintenance. .

A ceiling-embedded air conditioner according to a sixth aspect of the present invention includes a filter rotating device that rotates the single cloth-like filter, a filter cleaning device that can automatically clean the filter, and the filter cleaning device. You may further provide the collection box which collects the removed garbage.
According to this configuration, since the filter cleaner automatically cleans the air periodically, the air conditioner can be operated with a filter with less dust, and an air conditioner with less impeller power can be provided without maintenance. it can.

The ceiling-embedded air conditioner according to the seventh aspect of the present invention may further include a lowering device that lowers the collection box.
Without having to prepare a stepladder etc. to remove the garbage, the collection box containing the garbage can be lowered to near the floor with a single switch.

  According to the ceiling-embedded air conditioner of the eighth aspect of the present invention, a vertical louver that adjusts the wind direction in the vertical direction and a horizontal louver that adjusts the wind direction in the horizontal direction in the vicinity of the air outlet. May be provided.

  According to this structure, even if the opening direction of a blower outlet is restrict | limited by providing a suction inlet and a blower outlet along the periphery of the center part of a panel, a blowout direction can be adjusted in a wide range.

  According to the ceiling-embedded air conditioner of the ninth aspect of the present invention, the opening area of the suction port may be larger than the opening area of the air outlet.

  According to this configuration, since the flow velocity at the time of air blowing can be increased as compared with the flow velocity at the time of air suction, it is possible to suppress the occurrence of a short circuit in which the air blown from the air outlet is directly sucked into the air inlet. .

According to the ceiling-embedded air conditioner of the tenth aspect of the present invention, indoor lighting may be provided in the central portion.
According to this structure, even if the center part of the panel is largely provided on the indoor ceiling, the space in the central part can be effectively used, and the design of the indoor ceiling can be improved by providing the indoor lighting.

  According to the above-described ceiling-embedded air conditioner, it is possible to improve the hygiene while improving the design.

It is a perspective view which shows the state which installed the ceiling embedded type air conditioner which concerns on embodiment of this invention in the ceiling. It is a perspective view of the state where the center panel of the ceiling embedded type air conditioner concerning the embodiment of the present invention was opened. It is a bottom view of the state which removed the center panel of the ceiling-embedded air conditioner concerning the embodiment of the present invention. It is a longitudinal cross-sectional view which shows the ceiling-embedded air conditioner which concerns on embodiment of this invention, Comprising: It is AA sectional drawing of FIG. It is a bottom view of the state which removed the center panel of the ceiling-embedded air conditioner which concerns on the modification of embodiment of this invention. It is a figure which shows typically operation | movement of the filter of the ceiling-embedded air conditioner which concerns on the modification of embodiment of this invention. 5 is a perspective view showing a filter, a fill rotation device, a filter device, a dust collection box, and a dust collection box lowering device of a ceiling-embedded air conditioner according to a modification of the embodiment of the present invention, and is a portion X in FIG. Is shown.

Hereinafter, a ceiling-embedded air conditioner 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. Hereinafter, the ceiling-embedded air conditioner 10 will be described with respect to the indoor unit, and the description of the outdoor unit will be omitted.
As shown in FIGS. 1 and 2, the ceiling-embedded air conditioner 10 according to the present embodiment includes a casing 11 embedded in the ceiling C and a panel 12 that is disposed and exposed on the indoor side of the ceiling C. And.
The casing 11 has a substantially quadrangular prism shape, the four sides and the upper part are surrounded by an outer wall, and a large opening is provided below. The panel 12 has a substantially rectangular shape, and closes the opening below the housing 11. The panel 12 is provided with a plurality of suction ports 13 along four sides, and a plurality of air outlets 14 at four corners.

  As shown in FIGS. 3 and 4, a suction side space 16 is provided inside the housing 11. In addition, filters 15 are provided on the four outer walls of the housing 11. More specifically, the filter 15 of this embodiment is formed in a flat plate shape that extends vertically. A plurality of filters 15 are disposed above the panel 12 and at positions inside the suction port 13 along the outer wall of the housing 11. A suction side space 16 inside the housing 11 is surrounded by the outer wall of the housing 11 and the plurality of filters 15.

Here, the ceiling-embedded air conditioner 10 further includes a heat exchanger 17 accommodated in the suction side space 16 and a plurality of sirocco fans 20 each having an impeller 23.
Each sirocco fan 20 has one impeller 23, a scroll casing 21 that houses the impeller 23 and has a suction side opening 22 on the side surface, and a vane connected to the scroll casing 21. One diffuser (duct) 24 extending downward from the vehicle 23 is provided. In the present embodiment, for example, four sirocco fans 20 are provided.

  In the present embodiment, each sirocco fan 20 is arranged in a standing state and fixed to the housing 11. As a result, the suction side opening 22 opens sideways, and the rotation shaft of the impeller 23 is arranged so as to extend in the lateral direction (horizontal direction).

  Each scroll casing 21 is disposed on the center side of the suction side space 16. The scroll casings 21 are arranged next to each other and coupled to each other. The scroll casings 21 may be arranged apart from each other.

  Each diffuser 24 is radially disposed by extending downward from the center side of the suction side space 16 in which the scroll casing 21 is disposed. The front end side of each diffuser 24 is connected to the air outlets 14 at the four corners of the panel 12.

At the front end side of each diffuser 24 connected to the air outlet 14, a vertical louver 25 that adjusts the vertical direction of the airflow of the discharged air, and the left-right direction (horizontal direction) of the airflow of the discharged air And a left-right direction louver 26 that adjusts the direction of the.
In the present embodiment, the vertical louver 25 and the horizontal louver 26 can be driven by driving devices (stepping motors and actuators) (not shown). In the present embodiment, the left-right direction louver 26 is provided closer to the impeller 23 than the up-down direction louver 25, but the installation position is not limited, so the up-down direction louver 25 is closer to the impeller 23. May be provided. Further, any one of the vertical louver 25 and the horizontal louver 26 may be provided.

The heat exchanger 17 includes a refrigerant pipe 18 that circulates a refrigerant with an outdoor heat exchanger (not shown), and a drain pan 19 is installed vertically below the heat exchanger 17.
The heat exchanger 17 is disposed so as to continuously surround the impellers 23 of the plurality of sirocco fans 20 in the suction side space 16, and is also curved (or bent) in the space between adjacent sirocco fans 20. The sirocco fan 20 is inserted along the outer surface.

  Therefore, as shown in FIG. 3, the refrigerant pipe 18 and the drain pan 19 of the heat exchanger 17 bulge outward at the position of the diffuser 24 of each sirocco fan and are recessed toward the center between the diffusers 24. It has an almost star shape.

The panel 12 includes a panel main body 31 that is fixed around the casing 11 and arranged in a frame shape, and a central portion 32 that is arranged on the center side of the casing 11.
The panel main body 31 has a substantially rectangular shape in a bottom view corresponding to the housing 11 and has a large opening at the center side.

The central portion 32 is formed in a substantially rectangular plate shape smaller than the panel main body 31 when viewed from the bottom. The outer peripheral edge portion 32a of the central portion 32 and the inner edge portion 31a of the panel body 31 are disposed at substantially the same position.
An electrical component 33 including a control unit of the ceiling-embedded air conditioner 10 is disposed on the back side, that is, the upper side of the central portion 32. And in this embodiment, the room illumination 34 using LED and organic EL (electroluminescence) is arrange | positioned by the surface side of the center part 32, ie, the lower side.

  In the present embodiment, the gap between the panel main body 31 and the central portion 32 is the air outlet 14 and the air inlet 13. The blower outlet 14 and the suction inlet 13 are arranged along the outer peripheral edge part 32 a of the central part 32. The blower outlet 14 is connected to the diffuser 24 of the sirocco fan 20 as described above. The air outlet 14 and the inlet 13 are separated from each other by the wall surface of the diffuser 24. The suction port 13 is a gap that is disposed between adjacent diffusers 24 and extends along the four sides of the central portion 32, and is formed to have a substantially entire length between the diffusers 24. The suction port 13 communicates from the indoor space to the suction side space 16 in the housing 11. Each suction port 13 has an opening area larger than that of each air outlet 14.

  According to the ceiling-embedded air conditioner 10 of the present embodiment as described above, the suction port 13 and the air outlet 14 are provided in the outer peripheral edge portion 32a of the center portion 32 of the panel 12, so that the center of the panel 12 is provided. There is no need to provide the inlet 13 and the outlet 14 in the part 32. Therefore, a large suction port is not arranged in a range that can be visually recognized by the user, and a clean impression can be given to the user. Furthermore, by not arranging a large-area suction port or filter collected at the central portion of the central portion 32 of the panel 12, it is possible to suppress the dust attached to the suction port or the filter from falling downward.

  Moreover, since the suction inlet 13 and the blower outlet 14 are extended along the outer-periphery edge part 32a of the center part 32, the suction inlet 13 and the blower outlet 14 are ensured by providing the center part 32 large and ensuring periphery length. A sufficient opening area can be ensured, the flow resistance can be suppressed, noise can be prevented, and heat exchange performance and the like can be ensured.

  Furthermore, by providing the suction port 13 and the air outlet 14 separately from each other, it is possible to suppress a short circuit in which the air blown from the air outlet 14 is directly sucked into the air inlet 13.

  Furthermore, according to the ceiling-embedded air conditioner 10 of the present embodiment, since the plurality of sirocco fans 20 are provided in the suction side space 16 in the housing 11 communicated with the suction port 13, the entire suction flow rate and The blowing flow rate can be secured. It is also possible to change the layout of the sirocco fan 20 in various ways. Moreover, since the suction side opening part 22 of each sirocco fan 20 opens in the suction side space 16 in the housing | casing 11, it is easy to ensure the suction side opening part 22 of each sirocco fan 20, and the flow resistance of airflow increases. It is possible to prevent this, and it is possible to suppress an increase in noise such as an air suction sound and a sound generated by a motor (not shown) that drives the fan, and a decrease in heat exchange performance.

  Moreover, since the sirocco fan 20 is accommodated in the suction side space 16 partitioned and provided by the filter 15, a plurality of sirocco fans 20 can be provided while suppressing the occupied space. In addition, the filter 15 can be arranged in the housing 11 with a simple shape and compactly, and the filter 15 can be easily replaced.

In particular, since the suction side opening 22 of the sirocco fan 20 is disposed so as to open to the side, even if the suction side opening 22 is wide, the horizontal occupation area can be kept small. .
Therefore, even if a plurality of sirocco fans 20 are used, the inside of the housing 11 can be configured simply and compactly.

  Further, in the present embodiment, the heat exchanger 17 surrounds the plurality of sirocco fans 20 and is inserted into a space between the plurality of sirocco fans 20. Therefore, a wider heat exchange area of the heat exchanger 17 can be secured in the suction side space 16, and the heat exchange performance can be improved. Further, since the heat exchanger 17 is disposed adjacent to the outer surface of the sirocco fan 20, the heat exchanger 17 can be disposed at a position away from the inner surface of the housing 11, and the heat exchanger 17. And the space between the inner surface of the housing 11 can be secured and the pressure loss when air is sucked can be reduced.

  In the present embodiment, the air outlet 14 is provided with a vertical louver 25 and a horizontal louver 26. Therefore, even if the opening direction of the blower outlet 14 is restricted by providing the suction port 13 and the blower outlet 14 along the outer peripheral edge portion 32a of the central portion 32 of the panel 12, the air blowing direction can be widely adjusted. .

  Further, the opening area of the suction port 13 is larger than that of the blower outlet 14. Therefore, compared with the air suction flow rate at the suction port 13, the blowout flow rate at the blowout port 14 can be increased, and the effect of suppressing a short circuit can be enhanced.

  Moreover, since the room illumination 34 is arrange | positioned in the center part 32 of the panel 12, an air conditioner and illumination can be integrated. Therefore, even if the ceiling-embedded air conditioner 10 is provided large on the ceiling C in the room, the space where the ceiling-embedded air conditioner 10 is installed can be used effectively, and the design of the ceiling C can be improved. . In particular, since an LED or an organic EL is used for the indoor lighting 34, the amount of heat generated is suppressed, and the heat exchange performance in the suction side space 16 is not deteriorated.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like within a scope not departing from the gist of the present invention. .
For example, the blower outlet 14 may be provided along the four sides of the panel 12, and the suction port 13 may be provided at the four corners of the panel 12. The arrangement position of the suction port 13 and the blower outlet 14 is not limited to the above case.

  Further, for example, in the above description, an example in which a plurality of sirocco fans (single-suction sirocco fans) 20 each having a suction side opening 22 on one side surface is used as a fan for sucking and blowing in indoor air has been described. It is also possible to use a sirocco fan (both suction type sirocco fans) having suction side openings 22 on both side surfaces. Further, only one sirocco fan 20 may be provided in the housing 11. In this case, a single diffuser 24 may be branched into a plurality of outlets 14.

In the above description, the entire casing 11 is disposed in the ceiling-embedded air conditioner 10 with the ceiling C embedded in the ceiling C. However, a part of the casing 11 may be exposed indoors.
In the above description, a plurality of filters 15 formed in a flat plate shape are arranged around the suction side space 16, but the filter 15 may be provided so as to continuously surround the circumference of the suction side space 16 in a cylindrical shape by 360 degrees. .

  In the above description, the heat exchanger 17 is provided so as to surround all the sirocco fans 20, but can be provided for each sirocco fan 20, for example, near the suction side opening 22 of each sirocco fan 20. 17 may be arranged.

  Although the panel 12 arrange | positioned the panel main body 31 and the center part 32 up and down in the above, and provided the suction inlet 13 and the blower outlet 14 in the clearance gap, it is not limited at all. For example, the panel 12 may be formed in a single plate shape, and may be configured by opening a suction port and a blower outlet around the central region and around the central portion.

  Further, the panel 12 may not be provided with the room lighting 34. In this case, the panel 12 becomes a flat panel, and a clean impression can be given to the user.

  Further, when the ceiling-embedded air conditioner 10 is operated, the opening area of the inlet 13 and the outlet 14 may be increased by lowering the central portion 32 with respect to the panel body 31.

[Modification]
Further, as shown in FIGS. 5 to 7, in the ceiling-embedded air conditioner 10 described above, the filter 15 may have, for example, a single cloth shape so as to surround the heat exchanger 17 from the outer peripheral side. . In this case, the ceiling-embedded air conditioner 10 is removed by the filter rotating device 35 that rotates the cloth-like filter 15, the filter cleaning device 36 that can automatically clean the filter 15, and the filter cleaning device 36. A trash collection box 37 for collecting trash and a trash collection box lowering device 38 for lowering the trash collection box 37 may be further provided.

  The filter rotating device 35 includes, for example, a rack 35a fixed to the outer peripheral surface of the filter 15, and a pinion 35b that meshes with the rack 35a and rotates the filter 15 so as to be movable in the circumferential direction. For example, the rack 35 a is provided at the upper part of the outer peripheral surface of the filter 15.

  The filter cleaning device 36 is disposed so as to extend vertically, for example, and a brush 36 a that can contact the outer peripheral surface of the filter 15. The brush 36 a is provided side by side with the brush 36 a to contact the outer peripheral surface of the filter 15 and scrape off dust on the filter 15. And a scraper 36b that moves up and down. The scraper 36b can be fixed to the inner surface of the housing 11 or the brush 36a.

  The dust collection box 37 is provided below the filter 15 and below the brush 36a and the scraper 36b. And the dust removed from the filter 15 by the brush 36a and the scraper 36b is received.

  The garbage collection box lowering device 38 lowers the garbage collection box 37 and raises it again. That is, the garbage collection box lowering device 38 has a motor 38a, a reel 38b rotated by the motor 38a, and a wire 38c that can be wound and unwound by the reel 38b as the reel 38b rotates. doing. The wire 38 c is connected to the dust collection box 37.

  In such a ceiling-embedded air conditioner 10, the filter rotating device 35 rotates the filter 15 in the circumferential direction as shown in FIG. 6A, for example, or the filter 15 as shown in FIG. It can be rolled up and wound up. And while operating the filter 15, the filter 15 can be automatically cleaned regularly by the brush 36a and the scraper 36b. Accordingly, the air conditioner 10 can be operated with the filter 15 with less dust, and the filter 15 can be kept in a state with little pressure loss without maintenance, and the power of the impeller 23 can be reduced.

  Also, the garbage collection box lowering device 38 allows the garbage collection box 37 containing dust to be lowered to the vicinity of the floor surface with one switch without preparing a stepladder or the like when removing the garbage. Can be raised.

C Ceiling 10 Ceiling-embedded air conditioner 11 Housing 12 Panel 13 Suction port 14 Air outlet 15 Filter 16 Suction side space 17 Heat exchanger 18 Refrigerant piping 19 Drain pan 20 Sirocco fan 21 Scroll casing 22 Suction side opening 23 Impeller 24 Diffuser (duct)
25 Vertical louver 26 Left / right louver 31 Panel body 31a Inner edge 32 Central part 32a Outer peripheral edge 33 Electrical component 34 Indoor lighting 35 Filter rotation device 35a Rack 35b Pinion 36 Filter cleaning device 36a Brush 36b Scraper 37 Garbage collection box 38 Garbage Collection box lowering device 38a Motor 38b Reel 38c Wire

Claims (10)

A housing that houses a fan and a heat exchanger and can be installed embedded in the ceiling;
A panel that covers the bottom of the housing and is exposed to the room;
With
The panel is
In the center,
A ceiling-embedded air conditioner having an inlet and an outlet extending along the periphery of the central portion and isolated from each other.   The ceiling-embedded type according to claim 1, wherein a suction side space communicating with the suction port is provided in the housing, and a plurality of the fans and a suction side opening of the fan are provided in the suction side space. Air conditioner. A plurality of sirocco fans disposed in the suction space as the fans and having one duct connected to the outlet;
While partitioning the suction side space, a filter provided in the housing,
Further comprising
The ceiling-embedded air conditioner according to claim 2, wherein a rotating shaft of the sirocco fan extends in a horizontal direction, and the duct extends downward and is connected to the air outlet.   The ceiling-embedded air conditioner according to claim 3, wherein the heat exchanger is disposed along outer surfaces of the plurality of sirocco fans.   The ceiling-embedded air conditioner according to claim 3 or 4, wherein the filter has a single cloth shape surrounding the heat exchanger. A filter rotating device for rotating the cloth-like filter;
A filter cleaning device capable of automatically cleaning the filter;
A collection box for collecting garbage removed by the filter cleaner;
The ceiling-embedded air conditioner according to claim 5, further comprising:   The ceiling-embedded air conditioner according to claim 6, further comprising a lowering device that lowers the collection box.   The ceiling according to any one of claims 1 to 7, further comprising a vertical louver that adjusts a wind direction in a vertical direction and a horizontal louver that adjusts a wind direction in a horizontal direction in the vicinity of the air outlet. Embedded air conditioner.   The ceiling-embedded air conditioner according to any one of claims 1 to 8, wherein an opening area of the suction port is larger than an opening area of the air outlet.   The ceiling-embedded air conditioner according to any one of claims 1 to 9, wherein indoor lighting is provided in the central portion.

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