JP2023066158A - Ceiling installation type air conditioner - Google Patents

Abstract

To enable replacement of a filter to be performed easily.SOLUTION: A ceiling installation type air conditioner 1 includes: a casing 10 having a suction port 11; a fan 30 disposed above the suction port 11 in the casing 10; and a filter unit 50 disposed at the side of the fan 30 in the casing 10. The filter unit 50 has a fixing part 55c for detachably fixing the filter unit 50 to the casing 10. The fixing part 55c is provided below a center 50x as seen in a vertical direction of the filter unit 50.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 a centrifugal blower mechanism ( ), and an air cleaning unit (corresponding to the “filter” of the present disclosure from paragraph 0038) arranged on the side of the centrifugal blower mechanism in the casing. The sucked air is introduced into the air purifier via the centrifugal blower mechanism, purified by the air purifier, and blown out of the casing.

JP-A-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, Patent Document 1 does not disclose any aspect of the fixing portion for detachably fixing the air purifying portion (filter) to the casing, and depending on the aspect of the fixing portion, the filter replacement work becomes difficult. can be.

An object of the present disclosure is to provide a ceiling-mounted air conditioner that facilitates filter replacement work.

A ceiling-mounted air conditioner according to the present disclosure includes a casing having an air intake, a fan arranged above the air intake in the casing, and a filter arranged to the side of the fan in the casing. , wherein the filter has a fixing portion for detachably fixing the filter to the casing, and the fixing portion is provided below the center of the filter in the vertical direction.

According to the present disclosure, the replacement work of the filter can be performed more easily than in the case where the fixing portion is provided at or above the center in the vertical direction of the filter.

In the above ceiling-mounted air conditioner, the fan may overlap the suction port in the vertical direction, and a projection may be provided on a surface of the filter facing the fan. In this case, when an operator accesses the space between the fan and the filter, he/she can easily replace the filter by gripping the projection.

In the ceiling-mounted air conditioner, the filter is rotatable with respect to the casing about a horizontal axis, and the axis is provided above a vertical center of the filter. good. In this case, by providing the shaft above the vertical center of the filter and the fixing portion below the vertical center of the filter, when the fixing portion is pressed during the filter replacement work, the large moment can be applied. Therefore, the filter can be replaced with a relatively small force.

The ceiling-mounted air conditioner further includes a rectifying member that rectifies air from the suction port to the fan, the fan and the rectifying member vertically overlap the suction port, and the rectifying member It is arranged above the suction port and below the fan in the casing, and the lower end of the filter may be at the same height as the lower end of the rectifying member or above the lower end of the rectifying member. In this case, removing the rectifying member from the casing makes it easier to remove the filter from the casing.

In the ceiling-mounted air conditioner, the fan may overlap the suction port in the vertical direction, and the lower end of the filter may be closer to the fan in the horizontal direction than the upper end of the filter. In this case, when the operator accesses the casing from below the fan and the filter, the operator can easily touch the lower end of the filter, which makes the filter replacement work easier than when the filter is arranged in the vertical direction. can do

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;

<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 filter unit 50 corresponds to the "filter" 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 support surface 55p1 that supports the surface of the HEPA filter 51 facing the deodorizing filter 52, and the outer surface supports the surface of the deodorizing filter 52 that faces the HEPA filter 51. It corresponds to the support surface 55p2. The support surface 55p1 and the 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 detachably 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 fixed 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.

The convex portion 55z corresponds to the “shaft” of the present disclosure, and as shown in FIGS. extended. 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, and presses the fixed portion 55c to move the convex portion 55z as the center. The filter unit 50 is rotated 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).

<Effects of Embodiment>
As described above, according to the present embodiment, the fixing portion 55c is provided below the vertical center 50x of the filter unit 50 (see FIG. 2). A worker accesses the inside of the casing 10 from below the fan 30 and the filter unit 50 . Therefore, when the fixing portion 55c is provided below the vertical center 50x of the filter unit 50 as in the present embodiment, the fixing portion 55c is positioned above the vertical center 50x of the filter unit 50 or above the center 50x. As compared with the case where the fixing portion 55c is provided at the top, the operator can easily come into contact with the fixing portion 55c, and the replacement work of the filter unit 50 can be easily performed.

A projection 55d is provided inside the filter unit 50 and on a surface of the filter unit 50 facing the fan 30 (see FIGS. 2 to 5). In this case, when an operator accesses the space between the fan 30 and the filter unit 50, the operator can easily replace the filter unit 50 by gripping the protrusion 55d.

The filter unit 50 is rotatable with respect to the casing 10 around a projection 55z extending in the horizontal direction, and the projection 55z is provided above the vertical center 50x of the filter unit 50 (Fig. 10). In this case, by providing the convex portion 55z above the vertical center 50x of the filter unit 50 and the fixing portion 55c below the vertical center 50x of the filter unit 50, the filter unit 50 can be replaced by: A large moment can be applied to the filter unit 50 when the fixing portion 55c is pressed. Therefore, the replacement work of the filter unit 50 can be performed with a relatively small force.

The lower end 50b of the filter unit 50 is above the lower end 40b of the rectifying member 40 (see FIG. 2). In this case, removing the rectifying member 40 from the casing 10 (see FIG. 7) makes it easier to remove the filter unit 50 from the casing 10 (see FIG. 8).

The lower end 50b of the filter unit 50 is closer to the fan 30 in the horizontal direction than the upper end 50a of the filter unit 50 (see FIG. 2). In this case, when the operator accesses the inside of the casing 10 from below the fan 30 and the filter unit 50, it is easier for the operator to come into contact with the lower end of the filter unit 50 compared to when the filter unit 50 is arranged along the vertical direction. As a result, the operator can easily come into contact with the fixing portion 55c provided below the vertical center 50x of the filter unit 50, and the replacement work of the filter unit 50 can be performed more easily.

<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 present disclosure, "overlapping" includes partially overlapping as well as wholly overlapping.

In the above-described embodiment, the fixing portion 55c is provided at the lower end 50b of the filter unit 50 (see FIG. 2). However, the fixing part of the present disclosure is not limited to the lower end of the filter as long as it is provided below the vertical center of the filter, and is provided between the vertical center and the lower end of the filter, for example. good too.

In the above-described embodiment, the fixed part 55c is a part of the filter frame 55 and is configured by a part having elasticity. However, the fixing part of the present disclosure may be configured with members (for example, screws, bolts, etc.) different from the filter frame, and may not have elasticity.

In the above-described embodiment, the projection 55z as the axis of the filter is provided at the upper end 50a of the filter unit 50 (see FIG. 2). However, the axis of the present disclosure is not limited to the upper end of the filter as long as it is provided above the vertical center of the filter. good. Alternatively, the axis of the present disclosure may be provided at or below the vertical center of the filter. Furthermore, the filter of the present disclosure is not limited to a configuration that is rotatable with respect to the casing about an axis along the horizontal direction. configuration.

In the above-described embodiment, the convex portion 55z as the axis of the filter extends over the entire long side of the frame portion 55f (see FIG. 3). However, it is not limited to this, and as long as a horizontal axis along which the filter is rotatable with respect to the casing is formed, the members constituting the axis may be arranged discretely along the horizontal direction. .

The surface of the filter that faces the fan may not have projections.

The lower end of the filter may be level with the lower end of the rectifying member. Alternatively, the lower end of the filter may be below the lower end of the straightening member.

In the above-described embodiment, the filter units 50 are arranged to intersect the vertical plane and the horizontal plane, but they 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 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.

Reference Signs List 1 ceiling-mounted air conditioner 10 casing 11 suction port 30 fan 40 rectifying member 40b lower end 50 filter unit (filter)
50a Upper end 50b Lower end 50x Vertical center 51 HEPA filter 52 Deodorizing filter 55 Filter frame 55c Fixing part 55d Protrusion 55z Protruding part (shaft)
Ceiling

Claims (5)

a casing (10) having a suction port (11);
a fan (30) arranged above the suction port (11) in the casing (10);
a filter (50) positioned laterally of the fan (30) in the casing (10);
The filter (50) has a fixing portion (55c) for detachably fixing the filter (50) to the casing (10),
The ceiling-mounted air conditioner (1), wherein the fixed part (55c) is provided below the vertical center (50x) of the filter (50). The fan (30) vertically overlaps the suction port (11),
The ceiling-mounted air conditioner (1) according to claim 1, wherein a surface of said filter (50) facing said fan (30) is provided with a projection (55d). said filter (50) is rotatable relative to said casing about a horizontal axis (55z);
The ceiling-mounted air conditioner (1) according to claim 1 or 2, wherein said axis (55z) is provided above a vertical center (50x) of said filter (50). further comprising a straightening member (40) for straightening air from the suction port (11) to the fan (30);
The fan (30) and the rectifying member (40) vertically overlap the suction port (11),
The rectifying member (40) is arranged in the casing (10) above the suction port (11) and below the fan (30),
2. The lower end (50b) of the filter (50) is at the same height as the lower end (40b) of the rectifying member (40) or higher than the lower end (40b) of the rectifying member (40). 4. The ceiling-mounted air conditioner (1) according to any one of 1 to 3. The fan (30) vertically overlaps the suction port (11),
A lower end (50b) of the filter (50) is horizontally closer to the fan (30) than an upper end (50a) of the filter (50). A ceiling-mounted air conditioner (1).

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