JP2023066150A - Ceiling installation type air conditioner - Google Patents

Abstract

To enable replacement of filters to be easily performed even if the plurality of filters are provided.SOLUTION: A ceiling installation type air conditioner 1 includes: a casing 10 having a suction port 11; a high efficiency particulate air filter (HEPA) 51 and a deodorization filter 52 disposed within the casing 10; a fan 30 which is disposed within the casing 10 and generates airflow flowing from the suction port 11 to the HEPA filter 51 and the deodorization filter 52 through the fan 30; and a filter frame 55 which supports the HEPA filter 51 and the deodorization filter 52 and may be attached to or detached from the casing 10.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a ceiling-mounted air conditioner.

The air purifier of Patent Document 1 (corresponding to the “ceiling-mounted air conditioner” of the present disclosure) includes a casing having a suction port and an air purifying unit (from paragraph 0038, of the present disclosure) disposed in the casing. and a centrifugal blowing mechanism (corresponding to the "fan" of the present disclosure) arranged in the casing, and blows air sucked from the suction port through the centrifugal blowing mechanism. The air is introduced into the air purifying section, purified by the air purifying section, and blown out of the casing.

Japanese Patent Application Laid-Open No. 2001-179021

In order to maintain the air purification performance, it is necessary to periodically replace the filter (that is, remove and attach the filter to the casing). It has not been. In addition, when there are a plurality of filters, if the replacement work is performed for each filter, the replacement work becomes complicated.

An object of the present disclosure is to provide a ceiling-mounted air conditioner that facilitates filter replacement work even when there are a plurality of filters.

A ceiling-mounted air conditioner according to the present disclosure includes a casing having an air inlet, a first filter and a second filter arranged in the casing, and a fan arranged in the casing, wherein the air inlet a fan that generates an airflow from the fan toward the first filter and the second filter; and a support member that supports the first filter and the second filter and is detachable from the casing. I have.

According to the present disclosure, the first filter and the second filter can be replaced together by attaching and detaching the support member to and from the casing. Therefore, even when there are a plurality of filters, it is easy to replace the filters.

In the above-described ceiling-mounted air conditioner, the support member may have a frame portion along peripheral edges of the first filter and the second filter. In this case, the support member can support the first filter and the second filter without impairing the filter performance of each filter.

In the ceiling-mounted air conditioner, the first filter and the second filter are stacked along the direction of the airflow, and the support member supports a surface of the first filter facing the second filter. and a second support surface for supporting a surface of the second filter facing the first filter, wherein the first support surface and the second support surface are oriented in opposite directions to each other. You can face In this case, the first filter and the second filter can be attached to the support member from opposite directions.

In the above ceiling-mounted air conditioner, the fixing portion of the support member to the casing may have elasticity. In this case, the fixing portion having elasticity facilitates attachment/detachment of the support member to/from the casing (that is, replacement of the filter).

In the above ceiling-mounted air conditioner, the fan is arranged above the suction port, the support member is arranged to the side of the fan, and the lower end of the support member is positioned higher than the upper end of the support member. , in the horizontal direction, may be close to the fan. In this case, the worker is likely to come into contact with the lower end of the support member when accessing through the suction port. Therefore, by manipulating the lower end of the support member, it is possible to easily attach and detach the support member from the casing (that is, replace the filter).

In the ceiling-mounted air conditioner, the first filter may be a HEPA filter. In this case, a high sterilization effect is obtained.

In the ceiling-mounted air conditioner, the second filter may be a deodorizing filter. In this case, a deodorizing effect is obtained.

In the above ceiling-mounted air conditioner, the second filter may be arranged downstream of the first filter in the direction of the airflow. In this case, air purified by the first filter passes through the second filter. Therefore, the second filter is less likely to become dirty, and the replacement frequency of the second filter can be reduced.

1 is a plan view of a ceiling-mounted air conditioner according to an embodiment of the present disclosure, viewed from below; FIG. FIG. 2 is a cross-sectional view of the ceiling-mounted air conditioner shown in FIG. 1 taken along line II-II. FIG. 2 is a perspective view of a filter unit included in the ceiling-mounted air conditioner shown in FIG. 1 as viewed from the inside; FIG. 2 is a perspective view of a filter unit included in the ceiling-mounted air conditioner shown in FIG. 1 as viewed from the outside; Fig. 5 is an exploded perspective view of the filter unit shown in Figs. 3 and 4; FIG. 3 is a cross-sectional view corresponding to FIG. 2 showing a step of rotating the intake grille to open the opening of the casing in the ceiling-mounted air conditioner according to the embodiment of the present disclosure; FIG. 3 is a cross-sectional view corresponding to FIG. 2 showing a step of removing the straightening member after removing the suction grill in the ceiling-mounted air conditioner according to the embodiment of the present disclosure; 3 is a cross-sectional view corresponding to FIG. 2 showing a step of removing the filter unit after removing the suction grille and the rectifying member in the ceiling-mounted air conditioner according to the embodiment of the present disclosure; FIG. FIG. 3 is a cross-sectional view corresponding to FIG. 2 showing the first half of the step of mounting the filter unit in the ceiling-mounted air conditioner according to the embodiment of the present disclosure; FIG. 3 is a cross-sectional view corresponding to FIG. 2 showing the latter half of the process of mounting the filter unit in the ceiling-mounted air conditioner according to the embodiment of the present disclosure; FIG. 10 is a perspective view showing a process of removing the HEPA filter from the filter frame in the filter unit according to one embodiment of the present disclosure;

<Overall configuration of ceiling-mounted air conditioner>
First, the overall configuration of a ceiling-mounted air conditioner 1 according to an embodiment of the present disclosure will be described with reference to FIGS. 1 and 2. FIG. In the following description, directions such as "up", "down", "vertical", and "horizontal" represent directions when the ceiling-mounted air conditioner 1 is installed in the state shown in FIG.

The ceiling-mounted air conditioner 1 includes a casing 10, an intake grille 20, a decorative panel 25, a fan 30, a straightening member 40, four filter units 50, a coarse dust filter 60, a pre-filter 70, A sterilization unit 90 and a control unit 100 are provided.

The ceiling-mounted air conditioner 1 is a ceiling-embedded air conditioner in which a casing 10 is embedded in the ceiling C. As shown in FIG.

The fan 30 , the rectifying member 40 , the four filter units 50 , the coarse dust filter 60 , the pre-filter 70 and the sterilization section 90 are arranged inside the casing 10 . Control unit 100 is fixed to the outer surface of casing 10 .

The casing 10 is a square tube-shaped member with a bottom, and has a rectangular opening 10x on the bottom surface. A suction grille 20 and a decorative panel 25 are attached to the lower surface of the casing 10 . The intake grille 20 and the decorative panel 25 are arranged along the ceiling surface C1.

The suction grille 20 is a rectangular plate member and covers the opening 10x on the lower surface of the casing 10. As shown in FIG. The intake grille 20 has a protrusion 20z at one end. The convex portion 20z extends horizontally along one of the four sides of the rectangular suction grille 20 . The suction grille 20 is rotatably supported with respect to the casing 10 around the protrusion 20z. The opening 10x is opened and closed by rotating the intake grille 20 with respect to the casing 10 around the protrusion 20z. In other words, by rotating the intake grille 20 with respect to the casing 10, a state in which the opening 10x is closed as shown in FIG. 2 and a state in which the opening 10x is open as shown in FIG. 6 can be established. Furthermore, the intake grille 20 is detachable from the casing 10 .

The suction grille 20 has a central region 20r1 formed with a suction port 11 composed of a plurality of through holes 11x, and an edge region 20r2 outside the central region 20r1. The convex portion 20z is provided in the edge region 20r2.

The decorative panel 25 is formed along the periphery of the intake grille 20 and has four straight portions corresponding to the four sides of the intake grille 20 respectively. A flap 25f is provided on each straight portion of the decorative panel 25. As shown in FIG. The flap 25f is rotatably supported with respect to the decorative panel 25. As shown in FIG. The blowout port 12 is opened and closed by rotating the flap 25f with respect to the decorative panel. In other words, by rotating the flap 25f with respect to the decorative panel, a state in which the outlet 12 is closed as shown in FIG. 1 and a state in which the outlet 12 is opened as shown in FIG. 2 can be established.

Thus, the suction port 11 and the blowout port 12 are arranged on the lower surface of the casing 10 .

Fan 30 is a centrifugal fan and has motor 31 and a plurality of fins 32 . By rotating the fins 32 by driving the motor 31, the fan 30 passes through the pre-filter 70 and the coarse dust filter 60 from the suction port 11 as indicated by the thick arrow in FIG. , to the filter unit 50 and further to the blowout port 12 to generate an airflow.

The fan 30 is arranged above the suction port 11 . The fan 30 faces the suction port 11 and overlaps the suction port 11 in the vertical direction.

The straightening member 40 is a cylindrical member that forms an air passage from the suction port 11 to the fan 30 and straightens the air from the suction port 11 to the fan 30 . The straightening member 40 vertically overlaps the suction port 11 and is arranged above the suction port 11 and below the fan 30 .

The rectifying member 40 has a substantially truncated conical upper portion 41 and a rectangular tubular lower portion 42 . The upper end 41a of the upper portion 41 overlaps the lower end 32b of the fin 32 in the horizontal direction. The lower portion 42 is closer to the suction port 11 than the upper portion 41 and has a larger diameter than the upper end 41 a of the upper portion 41 .

The upper end 41 a of the upper portion 41 corresponds to the upper end 40 a of the straightening member 40 , and the lower end 42 b of the lower portion 42 corresponds to the lower end 40 b of the straightening member 40 .

Each of the four filter units 50 is arranged above the suction port 11 and on the side of the fan 30 . The four filter units 50 are arranged along the circumference of the fan 30 at positions facing each of the four side surfaces of the casing 10 .

Each filter unit 50 has a HEPA filter (High Efficiency Particulate Air Filter) 51 , a deodorizing filter 52 and a filter frame 55 . The filter frame 55 supports the HEPA filter 51 and the deodorizing filter 52 and is detachable from the casing 10 .

The HEPA filter 51 corresponds to the "first filter" of the present disclosure. The deodorizing filter 52 corresponds to the "second filter" of the present disclosure. The filter frame 55 corresponds to the "supporting member" of the present disclosure.

The HEPA filter 51 and the deodorizing filter 52 are laminated along the direction of the airflow. The deodorizing filter 52 is arranged downstream of the HEPA filter 51 in the direction of the airflow. The HEPA filter 51 has a pleated shape with peaks and valleys formed along the direction of the airflow. The deodorizing filter 52 absorbs odorous components, and reduces the odorous components from the room in which the ceiling-mounted air conditioner 1 is installed. The deodorizing filter 52 is made of activated carbon, for example.

Each filter unit 50 is arranged to intersect a vertical plane and a horizontal plane. In other words, each filter unit 50 is obliquely arranged. The surface of each filter 51, 52 intersects the vertical and horizontal directions. In each filter unit 50, the lower end 50b is positioned closer to the fan 30 in the horizontal direction and inside the casing 10 than the upper end 50a. In each filter unit 50 , the inner side is the upstream side in the direction of the airflow and faces the fan 30 , and the outer side is the downstream side in the direction of the airflow and faces the side wall of the casing 10 .

The lower end 55 b of the filter frame 55 corresponds to the lower end 50 b of the filter unit 50 , and the upper end 55 a of the filter frame 55 corresponds to the upper end 50 a of the filter unit 50 .

A lower end 50 b of each filter unit 50 is located above a lower end 40 b of the straightening member 40 .

The coarse dust filter 60 is attached to the lower portion 42 of the rectifying member 40 and arranged between the suction port 11 and the fan 30 in the direction of the airflow.

The coarse dust filter 60 is vertically separated from the upper end 42a of the lower portion 42 of the rectifying member 40 . As a result, the coarse dust filter 60 does not interfere with the rectifying effect of the rectifying member 40 .

The pre-filter 70 is supported on the upper surface of the central region 20r1 of the intake grille 20 and arranged between the intake port 11 and the coarse dust filter 60 in the direction of the airflow. The pre-filter 70 covers the plurality of through holes 11x forming the suction port 11. As shown in FIG. The air sucked from the suction port 11 is purified by the pre-filter 70 and then supplied into the casing 10 .

The HEPA filter 51 has a collection efficiency of 99.97% or more for particles with a particle size of 0.3 μm or more. The minimum particle size (particle diameter 0.3 μm) at which a predetermined collection efficiency (for example, 99.97%) is obtained by the HEPA filter 51 is the minimum particle size at which the predetermined collection efficiency is obtained by the coarse dust filter 60. less than The minimum particle size for which the pre-filter 70 provides the predetermined collection efficiency is larger than the minimum particle size for which the coarse dust filter 60 provides the predetermined collection efficiency.

The sterilization unit 90 includes an irradiation unit 91 that irradiates ultraviolet rays and an active species generation unit 92 that generates active species, and is located downstream of the suction port 11 and upstream of the fan 30 in the direction of the airflow in the casing 10 (pre between the filter 70 and the coarse dust filter 60) is sterilized. In the present disclosure, sterilization of bacteria by ultraviolet light and active species, decomposition of odorous components and viruses, etc. are collectively simply referred to as "sterilization".

The irradiation unit 91 includes a UVC-LED (ultraviolet C-light emitting diode) that emits ultraviolet C waves (hereinafter referred to as “UVC”) with a wavelength of 200 to 280 nanometers. UVC is irradiated toward the lower surface. The HEPA filter 51 is pleated, whereas the coarse dust filter 60 is flat. Here, the term “flat” means that the surface has no folds (pleats) and that there is no shaded portion when the surface is irradiated with light from an oblique direction. In the case of a pleated shape like the HEPA filter 51, it is difficult for UVC to reach deep. On the other hand, since the coarse dust filter 60 is flat, the UVC easily reaches the far end.

The active species generator 92 decomposes harmful substances including odorous components. The active species generator 92 has an inlet 92x and an outlet 92y. The suction port 92x is arranged between the deodorizing filter 52 and the blowout port 12 in the direction of the airflow. The blow-out port 92y is arranged downstream of the suction port 11 and upstream of the fan 30 (between the pre-filter 70 and the coarse dust filter 60) in the direction of the airflow. Odorous components in the air that remain without being adsorbed by the deodorizing filter 52 are taken into the active species generator 92 through the suction port 92x and decomposed by the active species generator 92 before being blown out from the blower port 12 . Then, air from which harmful substances including odorous components have been removed by the active species generator 92 is supplied between the pre-filter 70 and the coarse dust filter 60 from the air outlet 92y.

The control unit 100 includes a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), etc., and controls the fan 30 and the sterilization unit 90 .

<Configuration of filter unit>
Next, the configuration of the filter unit 50 will be described in detail with reference to FIGS. 2 to 5. FIG.

As shown in FIG. 5, the filter frame 55 has a rectangular frame portion 55f and a projecting portion 55p projecting from the inner peripheral surface of the frame portion 55f.

The frame portion 55f is formed along the peripheries of the HEPA filter 51 and the deodorizing filter 52. As shown in FIG.

The protruding portion 55p is formed along the entire circumference of the inner peripheral surface of the frame portion 55f in the central portion in the thickness direction of the frame portion 55f. In the projecting portion 55p, the inner surface corresponds to the first support surface 55p1 that supports the surface of the HEPA filter 51 facing the deodorizing filter 52, and the outer surface corresponds to the surface of the deodorizing filter 52 facing the HEPA filter 51. It corresponds to the second supporting surface 55p2 for supporting. The first support surface 55p1 and the second support surface 55p2 face opposite directions.

The filter frame 55 further has one claw 551, one claw 552, two claws 553, and two claws 554, as shown in FIGS. The claws 551 and 552 are for fixing the HEPA filter 51 to the filter frame 55 . The claws 553 , 554 are for fixing the deodorizing filter 52 to the filter frame 55 .

As shown in FIGS. 3 and 5, the claws 551 and 552 protrude inward of the frame portion 55f from the center of each short side of the frame portion 55f at one end in the thickness direction of the frame portion 55f. As shown in FIGS. 4 and 5, the claw 553 protrudes toward the inside of the frame portion 55f from approximately the center of one short side of the frame portion 55f at the other end in the thickness direction of the frame portion 55f. As shown in FIGS. 4 and 5, the claw 554 extends toward the inside of the frame portion 55f from near one end and the other end of the other short side of the frame portion 55f at the other end in the thickness direction of the frame portion 55f. Protruding.

One end of the frame portion 55 f in the thickness direction is located inside the filter unit 50 . The other end in the thickness direction of the frame portion 55f is located outside the filter unit 50. As shown in FIG.

The number of claws 553 and 554 (four) for fixing the deodorizing filter 52 to the filter frame 55 is greater than the number (two) of claws 551 and 552 for fixing the HEPA filter 51 to the filter frame 55 . As a result, the deodorizing filter 52 can be fixed to the filter frame 55 more firmly than the HEPA filter 51 . In other words, the HEPA filter 51 can be easily removed from the filter frame 55 and the deodorizing filter 52 can be difficult to remove from the filter frame 55 .

The filter frame 55 also has a handle 559 as shown in FIGS. 3-5. A handle 559 is connected to the claw 552 and protrudes toward the inside of the filter unit 50 . The HEPA filter 51 can be easily removed from the filter frame 55 by grasping the handle 559 and bending the claws 552 .

The HEPA filter 51 needs to be replaced periodically because particles accumulate on the pleated filter paper. On the other hand, the deodorizing filter 52 absorbs odor components and does not accumulate particles. Therefore, the replacement frequency of the HEPA filter 51 is higher than the replacement frequency of the deodorizing filter 52 . When the replacement frequency of the HEPA filter 51 is higher than the replacement frequency of the deodorizing filter 52 in this manner, the above-described configuration that allows the HEPA filter 51 to be easily removed from the filter frame 55 is particularly effective. The above configuration means that the number of claws 553 and 554 for fixing the deodorizing filter 52 to the filter frame 55 (four) and the number of claws 551 and 552 for fixing the HEPA filter 51 to the filter frame 55 (two). and that a handle 559 connected to the pawl 552 is provided.

The filter frame 55 further has a fixing portion 55c as shown in FIG. The fixing portion 55c is for fixing the filter unit 50 to the casing 10, and is provided below the center 50x of the filter unit 50 in the vertical direction.

As shown in FIGS. 3 to 5, the fixing portion 55c protrudes downward from the center of the long side of the frame portion 55f at the lower end of the frame portion 55f. The filter unit 50 is fixed to the casing 10 by disposing the fixing portion 55c in the recess 10c of the casing 10 (see FIG. 2).

The filter frame 55 further has a projection 55d as shown in FIGS. 3-5. The protrusion 55d protrudes toward the inside of the filter unit 50 from between the center and one end of the long side of the frame portion 55f at the lower end of the frame portion 55f. The projection 55d is provided on the surface of the filter unit 50 facing the fan 30 (see FIG. 2).

The filter frame 55 further has a projection 55z as shown in FIGS. 2-5. The convex portion 55z is provided above the vertical center 50x of the filter unit 50, as shown in FIG.

As shown in FIGS. 3 to 5, the convex portion 55z extends horizontally along the entire long side of the frame portion 55f at the upper end of the filter frame 55. As shown in FIG. The filter unit 50 is rotatable with respect to the casing 10 around the convex portion 55z while the convex portion 55z is arranged in the concave portion 10z of the casing 10 .

The filter frame 55 is made of resin. The entire filter frame 55 including the claws 551 to 554, the fixing portion 55c, the projection 55d, the convex portion 55z, etc. has elasticity and flexibility.

<Filter unit replacement process>
Next, the process of exchanging the filter unit 50 will be described with reference to FIGS. 6 to 10. FIG.

First, the opening 10x of the casing 10 is opened by rotating the intake grille 20 with respect to the casing 10 around the protrusion 20z (see FIG. 6). Furthermore, the intake grille 20 is removed from the casing 10 .

Next, the straightening member 40 is moved downward, passed through the opening 10x, and removed from the casing 10 (see FIG. 7). At this time, the coarse dust filter 60 attached to the rectifying member 40 is also removed from the casing 10 together with the rectifying member 40 .

Next, the four filter units 50 are sequentially removed from the casing 10 (see FIG. 8). At this time, the operator first accesses the space between the fan 30 and the filter unit 50 through the opening 10x, and arranges the projection 55z on the upper end 50a of the filter unit 50 in the recess 10z of the casing 10. In this state, the protrusion 55d (see FIGS. 3 to 5) is grasped and the lower end 50b of the filter unit 50 is moved toward the fan 30. FIG. As a result, the filter unit 50 rotates with respect to the casing 10 around the convex portion 55z on the upper end 50a, and the fixed portion 55c on the lower end 50b is arranged outside the concave portion 10c. After that, the operator moves the filter unit 50 obliquely downward across the vertical and horizontal planes, passes through the opening 10x, and removes it from the casing 10 .

Finally, the four filter units 50 are sequentially attached to the casing 10 (see FIGS. 9 and 10). At this time, first, as shown in FIG. 9, the operator moves the filter unit 50 from below the casing 10 obliquely upward crossing the vertical plane and the horizontal plane to pass through the opening 10x and into the casing 10. to be placed. After that, as shown in FIG. 10, the operator places the convex portion 55z on the upper end 50a of the filter unit 50 in the concave portion 10z of the casing 10, presses the fixing portion 55c, and rotates the filter around the convex portion 55z. Rotate the unit 50 with respect to the casing 10 . At this time, the lower end 50b of the filter unit 50 moves away from the fan 30, and the fixing portion 55c at the lower end 50b is arranged in the recess 10c (see FIG. 2).

<HEPA filter replacement process>
Next, referring to FIG. 11, the process of replacing the HEPA filter 51 in the filter unit 50 will be described.

When removing the HEPA filter 51 from the filter frame 55, as shown in FIG. 11, first, one end of the HEPA filter 51 is pushed (in the direction of arrow A) against the side wall 55f1 of the frame portion 55f provided with the claws 551. While pressing against the handle 559, the side wall 55f2 of the frame portion 55f provided with the claws 552 is pulled outside the frame portion 55f (in the direction of the arrow B). As a result, the side wall 55f2 is bent, and the other end of the HEPA filter 51 is released from the hook 552. As shown in FIG. In this state, the other end of the HEPA filter 51 is moved away from the deodorizing filter 52 (in the direction of arrow C) and placed outside the filter frame 55 . By holding the HEPA filter 51 obliquely and sliding it in the direction opposite to the arrow A, one end of the HEPA filter 51 is released from the claws 551 and the entire HEPA filter 51 is removed from the filter frame 55 .

When attaching the HEPA filter to the filter frame 55, the HEPA filter 51 is obliquely held and slid in the direction of arrow A from the side facing the first support surface 55p1. , and held by the claws 551 . In this state, the handle 559 is grasped and the side wall 55f2 is pulled to the outside of the frame portion 55f (in the direction of arrow B). As a result, the side wall 55 f 2 bends and the claw 552 moves in the direction of arrow B, so that the other end of the HEPA filter 51 can be arranged inside the filter frame 55 . In this state, the other end of the HEPA filter 51 is moved toward the deodorizing filter 52 (in the direction opposite to arrow C) and placed in the filter frame 55 . By releasing the handle 559 , the side wall 55 f 2 is elastically restored, the other end of the HEPA filter 51 is held by the claws 552 , and the entire HEPA filter 51 is attached to the filter frame 55 .

<Effects of Embodiment>
As described above, according to this embodiment, the filters 51 and 52 can be replaced collectively by attaching and detaching the filter frame 55 to and from the casing 10 (see FIGS. 6 to 10). Therefore, even when there are a plurality of filters 51 and 52, the replacement work of the filters 51 and 52 can be easily performed.

The filter frame 55 has a frame portion 55f along the peripheries of the filters 51 and 52 (see FIGS. 3 to 5). In this case, the filters 51 and 52 can be supported by the filter frame 55 without impairing the filter performance of each filter 51 and 52 .

The filter frame 55 has a first supporting surface 55p1 that supports the surface of the HEPA filter 51 facing the deodorizing filter 52, and a second supporting surface 55p2 that supports the surface of the deodorizing filter 52 facing the HEPA filter 51. The first support surface 55p1 and the second support surface 55p2 face opposite directions (see FIG. 5). In this case, the filters 51 and 52 can be attached to the filter frame 55 from opposite directions.

A fixing portion 55c of the filter frame 55 to the casing 10 has elasticity. In this case, the work of attaching and detaching the filter frame 55 to and from the casing 10 (that is, the work of exchanging the filters 51 and 52) can be easily performed. Further, in the present embodiment, not only the fixing portion 55c but also the entire filter frame 55 has elasticity, so that the filters 51 and 52 can be easily attached to and detached from the filter frame 55 (see FIG. 11).

The lower end 55b of the filter frame 55 is closer to the fan 30 in the horizontal direction than the upper end 55a of the filter frame 55 (see FIG. 2). In this case, when the operator accesses the inside of the casing 10 from below the fan 30 and the filter frame 55, it is easier for the operator to contact the lower end 55b of the filter frame 55 than when the filter frame 55 is arranged along the vertical direction. . As a result, the operator can operate the lower end 55b of the filter frame 55 to more easily attach and detach the filter frame 55 to the casing 10 (that is, replace the filters 51 and 52).

One of the filters 51 and 52 supported by the filter frame 55 is the HEPA filter 51 . In this case, a high sterilization effect is obtained.

The other of the filters 51 and 52 supported by the filter frame 55 is the deodorizing filter 52 . In this case, a deodorizing effect is obtained.

The deodorizing filter 52 is arranged downstream of the HEPA filter 51 in the direction of the airflow generated by the fan 30 (see FIG. 2). In this case, air purified by the HEPA filter 51 passes through the deodorizing filter 52 . Therefore, the deodorizing filter 52 is less likely to become dirty, and the replacement frequency of the deodorizing filter 52 can be reduced.

<Modification>
In the present disclosure, the term “ceiling installation type” refers to a ceiling embedded type such as the above-described embodiment, as well as a ceiling suspended type (the casing 10 is attached to the ceiling C with the casing 10 protruding downward from the ceiling surface C1). configuration), etc.

In the above-described embodiment, the fixed portion 55c is a part of the filter frame 55 as a support member and is composed of an elastic portion. However, the fixing part of the present disclosure may be configured with members (for example, screws, bolts, etc.) other than the supporting member, and may not have elasticity.

In the above-described embodiment, the filters 51, 52 and the filter frame 55 are rotatable with respect to the casing 10 around the projection 55z along the horizontal direction (see FIG. 10). However, the filters and support members of the present disclosure are not limited to configurations that are rotatable relative to the casing about axes along the horizontal direction, such as sliding relative to the casing in vertical and cross-horizontal oblique directions. It may be a configuration that can be attached by

Although the filter unit 50 including the filters 51 and 52 and the filter frame 55 is arranged to intersect the vertical plane and the horizontal plane in the above-described embodiment, it may be arranged along the vertical direction.

In the above-described embodiment, instead of the HEPA filter 51, a medium-high performance filter having a lower collection efficiency than the HEPA filter 51 (for example, having a predetermined collection efficiency for particles with a particle size exceeding 0.3 μm) is used. may be adopted.

In the above-described embodiment, the deodorizing filter 52 is arranged downstream of the HEPA filter 51 in the direction of the airflow generated by the fan 30, but the present invention is not limited to this. A HEPA filter 51 may be arranged downstream of the deodorizing filter 52 in the direction of the airflow generated by the fan 30 .

In the above-described embodiment, the straightening member 40 may not have the lower portion 42 and the coarse dust filter 60 may be attached to the lower surface of the upper portion 41 of the straightening member 40 .

The ceiling-mounted air conditioner of the present disclosure may further include a heat exchanger and have heating and/or cooling functions by means of the heat exchanger.

Although the suction port is composed of a plurality of through-holes in the above-described embodiments, it may be composed of a single through-hole.

Although the number of outlets is four in the embodiment described above, it may be any number. Further, although the blowing direction is four in the above-described embodiment, it may be two, three, or the like.

The fan may be in contact with the suction port.

The irradiation section may irradiate ultraviolet rays other than UVC (for example, UVA with a wavelength of 320 to 400 nm, UVB with a wavelength of 280 to 320 nm, etc.). However, among UVA, UVB and UVC, UVC has the highest sterilization effect.

The sterilization section may be configured by one of the irradiation section and the active species generation section.

Although the embodiments have been described above, it will be appreciated that various changes in form and detail may be made without departing from the spirit and scope of the claims.

1 ceiling-mounted air conditioner 10 casing 11 suction port 30 fan 50 filter unit 51 HEPA filter (first filter)
52 deodorizing filter (second filter)
55 filter frame (support member)
55a Upper end 55b Lower end 55c Fixed portion 55f Frame portion 55p1 First support surface 55p2 Second support surface C Ceiling

Claims (8)

a casing (10) having a suction port;
a first filter (51) and a second filter (52) disposed within the casing (10);
A fan (30) disposed in the casing (10) generates airflow from the suction port through the fan (30) toward the first filter (51) and the second filter (52). a fan (30) that causes
a support member that supports the first filter (51) and the second filter (52) and is detachable from the casing (10);
A ceiling-mounted air conditioner (1) comprising: The ceiling-mounted air conditioner (1 ). The first filter (51) and the second filter (52) are stacked along the direction of the airflow,
The support member (55) includes a first support surface (55p1) supporting a surface of the first filter (51) facing the second filter (52), and the first support surface (55p1) of the second filter (52). Having a second support surface (55p2) that supports the surface facing the filter (51),
The ceiling-mounted air conditioner (1) according to claim 1 or 2, wherein said first support surface (55p1) and said second support surface (55p2) face opposite directions to each other. The ceiling-mounted air conditioner (1) according to any one of claims 1 to 3, wherein a fixing portion (55c) of said support member (55) to said casing (10) has elasticity. The fan (30) is arranged above the suction port (11),
The support member (55) is arranged on the side of the fan (30),
The lower end (55b) of the support member (55) is horizontally closer to the fan (30) than the upper end (55a) of the support member (55). A ceiling-mounted air conditioner (1) as described. The ceiling-mounted air conditioner (1) according to any one of claims 1 to 5, wherein the first filter (51) is a HEPA filter. The ceiling-mounted air conditioner (1) according to any one of claims 1 to 6, wherein the second filter (52) is a deodorizing filter. The ceiling-mounted air conditioner (1 ).

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