Filter cleaning mechanism and air conditioning system

Abstract

To provide a filter cleaning mechanism and air conditioning system that are easily accessible to the user and do not cause a decrease in suction performance. [Solution] The filter cleaning mechanism of the embodiment is provided in the indoor unit of an air conditioner and includes a filter cleaning unit for cleaning the filter of the indoor unit, wherein the filter cleaning unit is provided so as to extend in a direction including a vertical component in the central part of the longitudinal direction of the housing of the indoor unit, and the opening provided at the lower end of the filter cleaning unit is formed to face downward.

Description

Technical Field

[0001] Embodiments of the present invention relate to a filter cleaning mechanism and an air conditioner.

Background Art

[0002] Conventionally, in the indoor unit of an air conditioner, a filter is provided at the suction port to prevent the interior of the indoor unit from being contaminated by dust contained in the air taken in from the suction port.

[0003] Furthermore, in order to prevent a decrease in air conditioning capacity, an increase in power consumption, etc. caused by clogging due to the dust collected by this filter, there is known an apparatus provided with an automatic cleaning mechanism for the filter.

[0004] As such an automatic cleaning mechanism for a filter, for example, in a wall-mounted indoor unit, the air intake is divided into four parts vertically and horizontally, and the upper and lower filters are paired. A mechanism has been proposed in which the paired filters are each moved up and down to a portion where the upper and lower filters intersect.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the above conventional automatic cleaning mechanism for a filter, since the filter cleaning mechanism is provided at a portion where the upper and lower filters intersect, it is located at a relatively high position, making it difficult for users to access. Furthermore, the main part of the filter cleaning mechanism is provided so as to cross the suction port, and there is a risk of a decrease in suction performance.

[0007] The present invention has been made in view of the above, and aims to provide a filter cleaning mechanism and air conditioning device that are easily accessible to the user and do not cause a decrease in suction performance. [Means for solving the problem]

[0008] The filter cleaning mechanism of the embodiment is provided in the indoor unit of an air conditioner and includes a filter cleaning unit for cleaning the filter of the indoor unit, wherein the filter cleaning unit is provided so as to extend in a direction including a vertical component in the longitudinal center of the housing of the indoor unit, and the opening provided at the lower end of the cleaning unit is formed to face downward. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view of the indoor unit of the air conditioning system according to the embodiment, as seen from the top side. [Figure 2] Figure 2 is an external perspective view of the assembled filter cleaning unit, first air filter, second air filter, and support frame. [Figure 3] Figure 3 is a cross-sectional view of the indoor unit. [Figure 4] Figure 4 is a cross-sectional view of the filter cleaning unit. [Figure 5] Figure 5 is an explanatory diagram showing the filter cleaning unit removed from the support frame. [Figure 6] Figure 6 is a block diagram illustrating the main components of the indoor unit's control system. [Figure 7] Figure 7 is an explanatory diagram illustrating the general operation of filter cleaning in a first example configuration of the filter drive mechanism. [Figure 8] Figure 8 is a flowchart showing the operation of cleaning the air filter of the indoor unit in the embodiment. [Figure 9] Figure 9 is a cross-sectional view of the filter cleaning unit as seen through the arrow AA in Figure 7. [Figure 10] Figure 10 is an explanatory diagram of a first example configuration of the filter drive mechanism. [Figure 11] Figure 11 is an explanatory diagram illustrating the general operation of filter cleaning in a second example configuration of the filter drive mechanism. [Figure 12] Figure 12 is an explanatory diagram of a second example configuration of the filter drive mechanism. [Modes for carrying out the invention]

[0010] Figure 1 is an external perspective view of the indoor unit 10 of the air conditioning system according to the embodiment, as seen from the top side. The indoor unit 10 is configured as a wall-mounted indoor unit, which is installed by hanging it on the wall of the room to be air-conditioned within the building.

[0011] In Figure 1, the longitudinal direction of the indoor unit 10 is the X-axis direction, the depth direction is the Y-axis direction, and the height direction is the Z-axis direction. The same applies hereafter. Furthermore, in Figure 1, the rightward direction is considered the positive direction and the leftward direction is considered the negative direction for the X-axis and Y-axis directions. Furthermore, regarding the Z-axis direction, in Figure 1, the upward direction is considered positive and the downward direction is considered negative.

[0012] The indoor unit 10 comprises a housing 11, a first intake port 12-1, a second intake port 12-2, a filter cleaning unit 13, a first air filter 14, a second air filter 15, a support frame 16, and an indoor heat exchanger 18. In Figure 1, for ease of understanding, the filter media in the first air filter 14 and the second air filter 15 are not shown, and only the filter frames are shown.

[0013] The enclosure 11 houses the indoor heat exchanger 18, an indoor fan (not shown), a control board, a drive mechanism, and airflow control mechanisms such as louvers. The first intake port 12-1 is provided across the top and front sides of the housing 11 and, when the indoor fan is driven, draws in the air to be air-conditioned from the room. The second suction port 12-2 is also provided across the upper surface side and the front side of the housing 11, similarly to the first suction port 12-1, and will suck in the air of the indoor air-conditioning target as the indoor fan is driven.

[0014] The filter cleaning unit 13 has a structure in which a cleaning member and a dust box are integrated, as will be described later. Also, the filter cleaning unit 13 is provided across the upper surface side and the front side of the housing 11, similarly to the first suction port 12-1 and the second suction port 12-2, and is provided at the central portion of the housing 11 between the first suction port 12-1 and the second suction port 12-2. Also, as shown in FIG. 3, the filter cleaning unit 13 is provided in a state of extending to the vicinity of the bottom of the indoor unit 10. That is, the filter cleaning unit 13 has a portion extending in the vertical direction (Z-axis direction in FIG. 3). Furthermore, the filter cleaning unit 13 can be detached by the user for maintenance. Details of the detachment will be described in detail later.

[0015] The first air filter 14 collects the dust contained in the air sucked in from the first suction port 12-1 and reduces the amount of dust flowing into the housing. The second air filter 15 collects the dust contained in the air sucked in from the second suction port 12-2 and reduces the amount of dust flowing into the housing. The first air filter 14 and the second air filter 15 are examples of filters.

[0016] In the above configuration, the first air filter 14 and the second air filter 15 are assumed to have a predetermined rigidity (hardness) and have a strength such that no large deformation or distortion occurs even during transportation.

[0017] The support frame 16 supports the first air filter 14 or the second air filter 15 under normal conditions and when the filter cleaning unit 13 is performing filter cleaning. Furthermore, when the filter cleaning unit 13 is performing filter cleaning, the support frame 16 guides the first air filter 14 or the second air filter 15 as it is transported along the filter transport path.

[0018] The air drawn in from the first intake port 12-1 and the second intake port 12-2 passes through the first air filter 14 or the second air filter 15, the indoor heat exchanger 18, and the indoor fan described later, before reaching the outlet described later. This airflow path will hereafter be referred to as the airflow path 17. The indoor heat exchanger 18 exchanges heat with the air flowing through the air channel 17 using a heat exchange medium flowing inside it.

[0019] Figure 2 is an external perspective view of the assembled filter cleaning unit 13, first air filter 14, second air filter 15, and support frame 16. The filter cleaning unit 13 is located in the center of the support frame 16 in the X-axis direction.

[0020] The first air filter 14 is supported by a pair of first guide members GM1 of the support frame 16 in the negative X-axis direction of the filter cleaning unit 13 in Figure 2. Here, the first guide members GM1 are provided in a cantilever structure at the respective ends of the support frame 16 in the positive and negative Z-axis directions in Figure 2, along the X-axis direction.

[0021] Furthermore, when transporting the first air filter 14 for cleaning, it is guided by a pair of first guide members GM1 of the support frame 16 and transported into the first transport path R1 of the filter cleaning unit 13.

[0022] Similarly, the second air filter 15 is supported by a pair of second guide members GM2 of the support frame 16 in the positive X-axis direction of the filter cleaning unit 13 in Figure 2. Here, the second guide members GM2 are provided in a cantilever structure parallel to the first guide member GM1 at the respective ends of the support frame 16 in the positive and negative Z-axis directions in Figure 2, along the X-axis direction.

[0023] Then, when transporting the second air filter 15 for cleaning, it is guided by a pair of second guide members GM2 of the support frame 16 and transported into the second transport path R2 of the filter cleaning unit 13.

[0024] Figure 3 is a cross-sectional view of the indoor unit 10. The first suction port 12-1 is located in the negative X-axis direction (away from you in Figure 3) relative to the position of the filter cleaning unit 13, and the second suction port 12-2 is provided in the positive X-axis direction (towards you in Figure 3) relative to the position of the filter cleaning unit 13.

[0025] The first air filter 14 is located in a position corresponding to the space between the top casing 13T and the central casing 13M, and in the negative Z-axis direction of the first intake port 12-1. Similarly, the second air filter 15 is located in a corresponding position between the central casing 13M and the bottom casing 13B, in the negative Z-axis direction of the second intake port 12-2.

[0026] Below the filter cleaning unit 13, the first air filter 14, and the second air filter 15, an indoor heat exchanger 18 is located, and further below the first indoor heat exchanger 18, an indoor fan 20 is located.

[0027] Furthermore, an air outlet 19 is provided on the lower side of the housing 11. This outlet 19 is an opening for the indoor fan 20 to blow out the air that has been drawn in from the first intake port 12-1 and the second intake port 12-2 and has undergone heat exchange by the indoor heat exchanger 18.

[0028] In the state shown in Figure 3, the indoor unit 10 is stopped and the air outlet 19 is closed. This air outlet 19 is equipped with a first vertical louver 21 and a second vertical louver 22 for adjusting the airflow direction in the vertical direction, and a left-right louver 23 for adjusting the airflow direction in the horizontal direction. It is also possible to omit the left-right louver 23 and provide only the first vertical louver 21 and the second vertical louver 22.

[0029] In the above configuration, the path from the first intake port 12-1 to the first air filter 14 or the path from the second intake port 12-2 to the second air filter 15 → indoor heat exchanger 18 → indoor fan 20 → outlet port 19 forms an air passage 17 as a whole.

[0030] Now, let's describe the filter cleaning unit 13. As shown in Figure 3, the filter cleaning unit 13 comprises a top casing 13T, a central casing 13M, and a bottom dust box 13D.

[0031] Figure 4 is a cross-sectional view of the filter cleaning unit 13. In Figure 4, for ease of understanding, only the filter cleaning unit 13 portion is extracted from the AA cross-sectional view in Figure 2. As shown in Figure 4, the central casing 13M comprises a first central casing 13M1 and a second central casing 13M2.

[0032] The filter cleaning unit 13 has a three-layer structure comprising an upper cleaning section CL1 partitioned by a top casing 13T and a first central casing M1, a lower cleaning section CL2 partitioned by a first central casing 13M1 and a second central casing 13M2, and a dust box section DB partitioned by a second central casing 13M2 and a bottom dust box 13D.

[0033] Furthermore, a first cleaning member CM1, formed as a brush member with a bristles, is provided in the central part of the inner surface of the top casing 13T, as a cleaning member constituting the upper cleaning section CL1. In this case, the top casing 13T and the upper cleaning section CL1 (first cleaning member CM1) may be formed integrally. However, considering the convenience of replacing the upper cleaning unit CL1, it is preferable to have a separate unit.

[0034] The first central casing 13M1 includes a pair of side wall sections 13M1S, and a plurality of cleaning member support panels SPP1 arranged parallel to each other, which connect the pair of side wall sections 13M1S and cooperate to support the second cleaning member CM2 and third cleaning member CM3, which have brushes, as cleaning members constituting the upper cleaning section CL1, and the fourth cleaning member CM4, which has a brush, as cleaning members constituting the lower cleaning section CL2.

[0035] The upper part of the fourth cleaning member CM4 is formed in the shape of an isosceles triangle in cross-section, which guides dust from the upper cleaning section CL1 to the lower cleaning section CL2, and ultimately to the dust box DB, and is configured as a dust guide section GD. However, the shape of the dust guide section GD is not limited to an isosceles triangle in cross-section; it can be arbitrarily set as long as it can efficiently guide dust from the upper cleaning section CL1 to the dust box DB.

[0036] The second central casing 13M2 includes a pair of side wall sections 13M2S and a plurality of cleaning member support panels SPP2 that connect the pair of side wall sections 13M2S and cooperate to support the fifth cleaning member CM5 and the sixth cleaning member CM6 along the extending direction of the filter cleaning unit 13, and are arranged parallel to each other.

[0037] In the above explanation, cleaning components CM1 to CM6 are given as examples of brush components, but the system is not limited to these. Any component that can remove dust without obstructing the transport of the air filter can be used, such as a brush roller, a rotating mop, or a wiper-type cleaning component.

[0038] Furthermore, the upper parts of the cleaning member support panels SPP1 and SPP2 may be formed in a sloping shape to guide dust towards the dust box DB.

[0039] In the above configuration, the first cleaning member CM1 cleans the upper surface (the surface located in the positive Z-axis direction) of the first air filter 14 that is transported within the first transport path R1. Furthermore, the second cleaning member CM2 and the third cleaning member CM3 clean the lower surface (the surface located in the negative Z-axis direction) of the first air filter 14 as it is transported within the first transport path R1.

[0040] Similarly, the fourth cleaning member CM4 cleans the upper surface (the surface located in the positive Z-axis direction) of the second air filter 15 as it is transported within the second transport path R2. Furthermore, the fifth cleaning member CM5 and the sixth cleaning member CM6 clean the lower surface (the surface located in the negative Z-axis direction) of the second air filter 15 as it is transported within the second transport path R2.

[0041] In Figure 4, the installation positions of the second cleaning member CM2 and the third cleaning member CM3 are offset in the X-axis direction from the installation position of the first cleaning member CM1 in the X-axis direction. However, it is also possible to place them opposite to the installation position of either the second cleaning member CM2 or the third cleaning member CM3, or to provide two first cleaning members CM1 and place them opposite to the installation positions of the second cleaning member CM2 and the third cleaning member CM3, respectively. Alternatively, it is also possible to provide two first cleaning members CM1, place the second cleaning member CM2 in a position corresponding to the space between the two first cleaning members CM1, and omit the third cleaning member CM3.

[0042] Similarly, in Figure 4, the installation positions of the fifth cleaning member CM5 and the sixth cleaning member CM6 are offset in the X-axis direction from the installation position of the fourth cleaning member CM4 in the X-axis direction. However, it is also possible to place the fourth cleaning member CM4 in a position opposite to either the installation position of the fifth cleaning member CM5 or the sixth cleaning member CM6, or to provide two fourth cleaning members CM4 and place them opposite to the installation positions of the fifth cleaning member CM5 and the sixth cleaning member CM6, respectively. Alternatively, it is also possible to provide two fourth cleaning members CM4, place the fifth cleaning member CM5 in a position corresponding to the space between the two fourth cleaning members CM4, and omit the sixth cleaning member CM6.

[0043] Furthermore, considering frictional resistance to the filter, it is preferable to position cleaning members corresponding to the same filter at offset locations in the X-axis direction. Furthermore, the shape, arrangement, and number of cleaning components can be arbitrarily set, as long as cleaning is performed reliably and the air filter is transported reliably.

[0044] Furthermore, the second central casing 13M2 is provided on the bottom dust box 13D side with a pair of engaging protrusions 13M21 that engage with each of the pair of engaging claws 13D1 of the bottom dust box 13D.

[0045] The side wall of the bottom dust box 13D is provided with an anti-slip portion 13DB1. By pressing this anti-slip portion 13DB1 in the X direction, the engagement of the pair of engaging claws 13D1 of the bottom dust box 13D with the engaging projection 13M21 of the second central casing 13M2 is released, separating the bottom dust box 13D from the filter cleaning unit 13, and allowing the dust stored in the dust box DB to be easily collected. As shown in Figure 3, the filter cleaning unit 13 extends in the Z-axis direction, so the collected dust tends to accumulate on the lower side (negative Z-axis side) of the indoor unit 10. Therefore, when disposing of the collected dust, the filter cleaning unit 13 may be removed from the indoor unit 10 and the collected dust may be disposed of.

[0046] Alternatively, with the filter cleaning unit 13 installed, the lid 13L can be left open, and the dust collected from inside the filter cleaning unit 13, which functions as a dust box, can be easily collected by sucking it up with a vacuum cleaner. With this configuration, there is no need to remove the filter cleaning unit 13 after filter cleaning to collect the collected dust, thus improving maintainability.

[0047] Figure 5 is an explanatory diagram showing the filter cleaning unit 13 removed from the support frame 16. First guide members GM1 are provided near the upper and lower ends of the support frame 16. The first guide members GM1 are positioned on the support frame 16 so as to contact the back surface of the first air filter 14 (the surface on the indoor heat exchanger 18 side), and are projecting in the X-axis direction so as to be able to support the first air filter 14.

[0048] Similarly, second guide members GM2 are provided near the upper and lower ends of the support frame 16. The second guide members GM2 are positioned on the support frame 16 so as to contact the back surface of the second air filter 15 (the surface on the indoor heat exchanger 18 side), and are projecting in the X-axis direction so as to be able to support the second air filter 15.

[0049] The first guide member GM1 and the second guide member GM2 may be formed in the shape of a groove that guides the side edge of the first air filter 14 or the second air filter 15 when it is inserted into the groove. The first guide member GM1 and the second guide member GM2 may be provided so as to protrude from the support frame 16, or they may be composed of grooves formed in the support frame.

[0050] Furthermore, a fitting portion 31 is erected at the upper end of the central part of the support frame 16 in the X-axis direction, into which one end of the filter cleaning unit 13 is fitted and secured. Furthermore, a contact surface 33 is provided at a position on the support frame 16 opposite to the lower surface of the filter cleaning unit 13 when the filter cleaning unit 13 is mounted, so that the lower surface of the filter cleaning unit 13 contacts and supports the filter cleaning unit 13.

[0051] The filter cleaning unit 13 may be attached to the machine by a well-known fitting structure such as a combination of engaging claws and engaging holes, or a combination of engaging projections and engaging recesses, or it may be attached by magnetic force.

[0052] On the other hand, as described above, the filter cleaning unit 13 is equipped with a top casing 13T, a central casing 13M, and a bottom casing 13B, and a first transport path R1 is provided between the top casing 13T and the central casing 13M through which the first air filter 14 is transported while being cleaned during air filter cleaning.

[0053] Similarly, a second transport path R2 is provided between the central casing 13M and the bottom casing 13B, through which the second air filter 15 is transported while being cleaned during air filter cleaning.

[0054] Furthermore, in the case where the indoor unit 10 is mounted on the wall, the filter cleaning unit 13 is provided with a lid 13L at the bottom of the cleaning unit that opens its internal space in the vertical direction (Z-axis direction).

[0055] Figure 6 is a block diagram illustrating the main components of the control system for the indoor unit 10. The indoor unit 10 includes a controller 41, a filter drive mechanism 42, and a remote controller 43.

[0056] The controller 41 controls the entire indoor unit 10 based on a predetermined control program, based on input from the remote controller 43. During filter cleaning, the controller 41 also drives the first air filter 14 and the second air filter 15 via the filter drive mechanism 42, which acts as a transport unit, to transport them through the filter cleaning unit 13 for cleaning.

[0057] The filter drive mechanism 42 performs a transport operation under the control of the controller 41 to pass the first air filter 14 and the second air filter 15 through the filter cleaning unit 13 for cleaning.

[0058] The remote controller 43 comprises one or more operating elements such as button switches, and a display unit consisting of a liquid crystal display, LEDs, etc., which displays various information such as setting status and operating status. It is used by the user to input various operation instructions to the controller 41 via wireless communication such as infrared communication.

[0059] Next, we will describe the overview of the filter cleaning operation in the first configuration example of the filter drive mechanism 42.

[0060] Figure 7 is an explanatory diagram illustrating the general operation of filter cleaning in a first configuration example of the filter drive mechanism 42. In the indoor unit 10 of this embodiment, during the filter cleaning operation, the first air filter 14 is cleaned by being transported through the first transport path R1 of the filter cleaning unit 13.

[0061] In parallel with the cleaning operation of the first air filter 14, the second air filter 15 is cleaned by being transported through the second transport path R2 of the filter cleaning unit 13.

[0062] More specifically, the initial state is as shown in Figure 7, i.e., the first air filter 14 is in the negative X-axis direction relative to the filter cleaning unit 13 (left side in Figure 7), and the second air filter 15 is in the positive X-axis direction relative to the filter cleaning unit 13 (right side in Figure 7).

[0063] In this state, by driving the drive motor DM, the first air filter 14 is transported through the first transport path R1 in the first direction DR1 (positive direction in the X-axis direction) until it is positioned on the positive direction side in the X-axis direction relative to the filter cleaning unit 13, and the first cleaning is completed.

[0064] In parallel with this, the second air filter 15 passes through the second transport path R2 in the second direction DR2 (negative direction in the X-axis direction) and is transported until it is positioned on the negative direction side in the X-axis direction relative to the filter cleaning unit 13, at which point the first cleaning is completed.

[0065] Then, once the first cleaning is complete, the drive motor DM is driven in the reverse direction, causing the first air filter 14 to pass through the first transport path R1 in the second direction DR2 (negative direction in the X-axis direction) until it is positioned on the negative X-axis side relative to the filter cleaning unit 13, thus completing the second cleaning.

[0066] In parallel with this, the second air filter 15 is transported through the second transport path R2 in the first direction DR1 (positive X-axis direction) until it is positioned on the positive X-axis side relative to the filter cleaning unit 13, and the second cleaning is completed. As a result, the first air filter 14 and the second air filter 15 return to the positions shown in Figure 7.

[0067] Next, we will explain the filter cleaning process in more detail.

[0068] Next, the operation of the embodiment will be described. Figure 8 is a flowchart showing the operation of cleaning the air filter of the indoor unit 10 in the embodiment. The controller 41 of the indoor unit 10 operates according to the control program and determines whether the cleaning timing according to a predetermined setting has been reached or whether a cleaning instruction has been issued (step S11).

[0069] Here, the predetermined cleaning timing refers to timings such as every predetermined cumulative operating time of the indoor unit 10 (for example, every 24 hours of cumulative operating time), or at times set by the user (for example, once every three days). Furthermore, the cleaning instruction is an instruction to start air filter cleaning, which is input via the remote controller 43.

[0070] In the determination in step S11, if the cleaning timing has not yet been reached and no cleaning instruction has been given (step S11; No), the controller 41 enters a standby state.

[0071] In the determination in step S11, if the predetermined cleaning timing has been reached or a cleaning instruction has been given (step S11; Yes), the air filter is driven in the first cleaning direction (step S12). Here, the first cleaning direction is the direction determined by the position of the first air filter 14 or the second air filter 15 before it is driven.

[0072] More specifically, in the example shown in Figure 7, the positions of the first air filter 14 and the second air filter 15 before operation are such that the first cleaning direction for the first air filter 14 is the first direction DR1 (positive direction in the X-axis direction), and the first cleaning direction for the second air filter 15 is the second direction DR2 (negative direction in the X-axis direction). Then, the first air filter 14 and the second air filter 15 are transported through the filter cleaning unit 13, thereby performing a filter cleaning operation.

[0073] Now, let's describe the configuration of the filter cleaning unit 13. Figure 9 is a cross-sectional view of the filter cleaning unit 13 as seen by arrow AA in Figure 7. As shown in Figure 9, the filter cleaning unit 13 has a first transport path R1 between the top casing 13T and the central casing 13M.

[0074] During air filter cleaning, the first air filter 14 is guided by the first guide member GM1, the first guide wall GW1 provided on the top casing 13T, and the second guide wall GW2 provided on the central casing 13M, and is transported (inserted) into the first transport path R1, cleaned, and then transported out of the first transport path R1, guided by the first guide member GM1, the first guide wall GW1 provided on the top casing 13T, and the second guide wall GW2 provided on the central casing 13M.

[0075] Furthermore, as shown in Figure 9, the filter cleaning unit 13 has a second transport path R2 between the central casing 13M and the bottom casing 13B.

[0076] During air filter cleaning, the second air filter 15 is guided by the second guide member GM2, the second guide wall GW2 provided on the central casing 13M, and the third guide wall GW3 provided on the bottom casing 13BT, and is transported (inserted) into the second transport path R2, cleaned, and then transported out of the second transport path R2, guided by the second guide member GM2, the second guide wall GW2 provided on the central casing 13M, and the third guide wall GW3 provided on the bottom casing 13BT.

[0077] In the above configuration, the top casing 13T and the central casing 13M function as a single cleaning unit, the bottom casing 13B and the central casing 13M function as a single cleaning unit, and furthermore, the first guide wall GW1, the second guide wall GW2, and the third guide wall GW3 function as dust guide sections that guide the collected dust.

[0078] In Figure 9, for ease of understanding, the first guide member GM1 is shown only at the location where the first air filter 14 is shown, and the second guide member GM2 is shown only at the location where the second air filter 15 is shown. However, in reality, the first guide member GM1 or the second guide member GM2 are also provided on the opposite side via the filter cleaning unit 13.

[0079] In the positive Z-axis direction of the first transport path R1, a cleaning member CM1 is provided in the center of the X-axis direction, supported by the top casing 13T.

[0080] Furthermore, in the negative Z-axis direction of the first transport path R1, cleaning members CM2 and CM3 are provided, supported by the central casing 13M, along the X-axis direction which is the transport direction of the first air filter 14, before and after the position where cleaning member CM1 is provided.

[0081] Here, the cleaning components CM1 to CM3 are shown configured as brushes, but it is also possible to use brush rollers, rotating mops, or wiper-type cleaning components instead of brushes.

[0082] Figure 10 is an explanatory diagram of a first configuration example of the filter drive mechanism 42. In the configuration shown in Figure 10(A), the filter drive mechanism 42 in Figure 6 comprises a drive motor DM, a drive belt DV, a driven pinion SPG, and a drive pinion DPG. Here, the driven pinion SPG and the driving pinion DPG have the same shape.

[0083] Furthermore, the first air filter 14 is provided with a rack that runs along the X-axis direction, which is the transport direction of the first air filter 14, and also on the side of the first air filter 14 that is in the positive Y-axis direction. Furthermore, the second air filter 15 is provided with a rack that runs along the X-axis direction, which is the transport direction of the second air filter 15, and also on the negative Y-axis side of the second air filter 15.

[0084] In the state shown in Figure 10(A), the driven pinion SPG is positioned on the positive Y-axis direction side of the rack of the first air filter 14 and is engaged. Furthermore, in the state shown in Figure 10(A), the drive pinion DPG is located on the negative Y-axis side of the rack of the second air filter 15 and is engaged.

[0085] Here, the rack will be explained using a magnified view of a portion of the second air filter 15 in Figure 10(B). When the gear pitch of the racks provided in the first air filter 14 and the second air filter 15 is GP, as shown in Figure 10(B), the distance between the driven pinion SPG and the driving pinion DPG is GL = n·GP (where n is a natural number).

[0086] Therefore, the driven pinion SPG rotates in sync with the drive pinion DPG, which is driven by the drive motor DM, and thus rotates at the same speed (=same conveying amount).

[0087] Furthermore, the length of the first air filter 14 and the second air filter 15 in the X-axis direction is set to be longer than the separation distance GL, and racks are formed on the first air filter 14 and the second air filter 15 along their entire width in the X-axis direction.

[0088] As a result, the racks of the first air filter 14 and the second air filter 15 are always engaged with at least one of the driven pinion SPG or the driving pinion DPG, regardless of the transport position.

[0089] Therefore, in the state shown in Figure 10(A), when the drive pinion DPG is rotated counterclockwise by the drive motor DM, the drive belt DV is also driven counterclockwise, and the driven pinion SPG is also driven counterclockwise.

[0090] As a result, the first air filter 14 is transported in the positive direction of the X axis (to the left in Figure 10(A)), and the second air filter 15 is transported in the negative direction of the X axis (to the right in Figure 10(A)).

[0091] Then, when the drive motor DM rotates the drive pinion DPG counterclockwise, the first air filter 14 and the second air filter 15 are transported into the filter cleaning unit 13.

[0092] Furthermore, the drive motor DM causes the drive pinion DPG to rotate counterclockwise, so that the first air filter 14 and the second air filter 15 pass through the filter cleaning unit 13 and reach the opposite side via the filter cleaning unit 13. That is, in Figure 10(A), the first air filter 14 reaches the left side of the filter cleaning unit 13, and the second air filter 15 reaches the right side of the filter cleaning unit 13.

[0093] As described above, the first air filter 14 is transported within the filter cleaning unit 13 in either the positive or negative X-axis direction, thereby collecting dust and debris from the upper surface of the first air filter 14 by the cleaning member CM1 and storing it in the filter cleaning unit 13, which functions as a dust box.

[0094] Similarly, cleaning members CM2 and CM3 collect dust trapped on the lower surface of the first air filter 14 and store it in the filter cleaning unit 13, which functions as a dust box.

[0095] Meanwhile, as the second air filter 15 is transported within the filter cleaning unit 13 in either the positive or negative X-axis direction, the cleaning member CM4 collects dust on the upper surface of the second air filter 15 and stores it in the filter cleaning unit 13, which functions as a dust box.

[0096] Similarly, cleaning members CM5 and CM6 collect dust trapped on the lower surface of the second air filter 15 and store it in the filter cleaning unit 13, which functions as a dust box.

[0097] Next, the controller 41 determines whether the transport position of the air filter has reached the first drive end (step S13).

[0098] Here, the first drive end is the position in Figure 8 where the original second air filter 15 was located when the first air filter 14 and the second air filter 15 are transported in the first cleaning direction, and the position in Figure 9 where the original first air filter 14 was located for the first air filter 14. The first drive end corresponds to the standby position of the first air filter 14. In this standby position, the first air filter 14 is installed in such a way that it can be easily removed from the housing 11 by the user for cleaning, etc. Similarly, when the transported second air filter 15 is located in this standby position, it can also be easily removed from the housing 11 by the user for cleaning, etc.

[0099] In the determination in step S13, if the transport position of the air filter has not yet reached the first drive end (step S13; No), the controller 41 returns to step S12 to drive the first air filter 14 and the second air filter 15 in the first cleaning direction and continue transporting them.

[0100] In the determination in step S13, if the transport position of the air filter reaches the first drive end (step S13; Yes), the controller 41 drives the air filter in the second cleaning direction (step S14).

[0101] Here, the second cleaning direction is the opposite direction to the first cleaning direction. More specifically, in Figure 10(A), if, as a result of transporting in the first cleaning direction, the first air filter 14 is located to the left of the filter cleaning unit 13 and the second air filter 15 is located to the right of the filter cleaning unit 13, then the second cleaning direction for the first air filter 14 is the second direction DR2 (negative direction in the X-axis direction), and the second cleaning direction for the second air filter 15 is the first direction DR1 (positive direction in the X-axis direction).

[0102] Next, the controller 41 determines whether the transport position of the air filter has reached the second drive end (step S15). Here, the second drive end is the position shown in Figure 9 for the first air filter 14 and the second air filter 15, respectively, when the first air filter 14 and the second air filter 15 are transported in the second cleaning direction. The second drive end corresponds to the standby position of the second air filter 15. In this standby position, the second air filter 15 is installed in a way that allows it to be easily removed from the housing for cleaning, etc., by the user, etc. Similarly, when the transported first air filter 14 is located in this standby position, it can also be easily removed from the housing for cleaning, etc., by the user, etc.

[0103] In the determination in step S15, if the second drive end has not yet been reached (step S15; No), the controller 41 proceeds back to step S14 and continues driving the first air filter 14 and the second air filter 15 in the second cleaning direction. As a result, the first air filter 14 and the second air filter 15 pass through the filter cleaning unit 13 again and are cleaned again as described above.

[0104] In the determination in step S15, if the second drive end is reached (step S15; Yes), the controller 41 determines whether cleaning is complete or not (step S16).

[0105] Whether cleaning is complete or not can be set arbitrarily, but for example, it can be set to complete when steps S12 to S15 have been performed once. Alternatively, if the dirt is estimated to be severe, it can be set to complete when the process has been performed multiple times.

[0106] Furthermore, in the above explanation, the minimum cleaning unit was one round trip of transporting the air filter. However, it is not limited to this, and it is also possible to configure the system so that the minimum cleaning unit is one transport of the air filter in either the first or second cleaning direction.

[0107] In the determination in step S16, if cleaning is not yet complete (step S16; No), the controller 41 proceeds back to step S12 and performs cleaning according to the procedure described above. In the determination in step S16, if cleaning is completed (step S16; Yes), the controller 41 terminates the process.

[0108] As described above, according to this first embodiment, it is possible to provide a filter cleaning mechanism and air conditioning system that are easily accessible to the user, easy to maintain, and do not cause a decrease in suction performance.

[0109] Next, we will describe the overview of the filter cleaning operation in the second configuration example of the filter drive mechanism 42. Figure 11 is an explanatory diagram illustrating the general operation of filter cleaning in a second configuration example of the filter drive mechanism 42.

[0110] First, let's assume the initial state is as shown in Figure 7, that is, the first air filter 14 is in the negative X-axis direction relative to the filter cleaning unit 13 (left side in Figure 7), and the second air filter 15 is in the positive X-axis direction relative to the filter cleaning unit 13 (right side in Figure 7).

[0111] In this state, by driving the first drive motor DM1 and the second drive motor DM2 in a synchronous manner, the first air filter 14 is initially transported in the first direction DR1 (positive direction in the X-axis direction) by a pinion driven by the first drive motor DM1.

[0112] Then, the leading portion of the first air filter 14 passes through the first transport path R1 and reaches the pinion driven by the second drive motor DM2. Once the pinion engages with the filter, the filter is then transported by the pinion driven by the second drive motor DM2 until it is positioned on the positive X-axis side relative to the filter cleaning unit 13, thus completing the first cleaning cycle.

[0113] Even when the two pinions are engaged, the first drive motor DM1 and the second drive motor DM2 are driven in a synchronous state, so transport in the first direction DR1 continues.

[0114] In parallel with this, the second air filter 15 is initially transported in the second direction DR2 (negative direction in the X-axis direction) by a pinion driven by the second drive motor DM2.

[0115] Then, the leading portion of the second air filter 15 passes through the first transport path R1 and reaches the pinion driven by the first drive motor DM1. Once the pinion engages with the pinion, it is then transported by the pinion driven by the first drive motor DM1 through the second transport path R2 in the second direction DR2 (negative direction in the X-axis direction) relative to the filter cleaning unit 13 until it is positioned on the negative X-axis side relative to the filter cleaning unit 13, thus completing the first cleaning cycle.

[0116] Even when the two pinions are engaged, the first drive motor DM1 and the second drive motor DM2 are driven in a synchronous state, so transport in the second direction DR2 continues.

[0117] Once the first cleaning is complete, the first drive motor DM1 and the second drive motor DM2 are driven in opposite directions in a synchronous manner, and the first air filter 14 is then transported in the second direction DR2 (negative direction in the X-axis direction) by a pinion driven by the second drive motor DM2.

[0118] Subsequently, the leading portion of the first air filter 14 passes through the first transport path R1 and reaches the pinion driven by the first drive motor DM1. Once the pinion engages with the pinion, it is then transported by the pinion driven by the first drive motor DM1 through the second transport path R2 in the second direction DR2 (negative direction in the X-axis direction) relative to the filter cleaning unit 13 until it is positioned on the negative X-axis side relative to the filter cleaning unit 13, thus completing the second cleaning cycle.

[0119] Even when the two pinions are engaged, the first drive motor DM1 and the second drive motor DM2 are driven in a synchronous state, so transport in the second direction DR2 continues.

[0120] In parallel with this, the second air filter 15 is then transported in the first direction DR1 (positive direction in the X-axis direction) by a pinion driven by the first drive motor DM1.

[0121] Subsequently, the leading portion of the second air filter 15 passes through the second transport path R2 and reaches the pinion driven by the second drive motor DM2. Once the pinion engages with the pinion, it is then transported by the pinion driven by the second drive motor DM2 towards the filter cleaning unit 13 in the first direction DR1 (positive X-axis direction) through the second transport path R2 until it is positioned on the positive X-axis side relative to the filter cleaning unit 13, thus completing the second cleaning cycle.

[0122] Even in this case, since the first drive motor DM1 and the second drive motor DM2 are driven in a synchronous state, transport in the first direction DR1 continues, even though the two pinions are engaged. As a result, the first air filter 14 and the second air filter 15 will return to the position (standby position) shown in Figure 7.

[0123] Figure 12 is an explanatory diagram of a second configuration example of the filter drive mechanism 42. In the configuration shown in Figure 12(A), the filter drive mechanism 42 in Figure 7 comprises a first drive motor DM1, a second drive motor DM2, a first pinion PG1, and a second pinion PG2.

[0124] Here, the first drive motor DM1 and the second drive motor DM2 have the same configuration, and the first pinion PG1 and the second pinion PG2 have the same shape.

[0125] Furthermore, the first air filter 14 is provided with a rack that runs along the X-axis direction, which is the transport direction of the first air filter 14, and also on the side of the first air filter 14 that is in the positive Y-axis direction. Furthermore, the second air filter 15 is provided with a rack that runs along the X-axis direction, which is the transport direction of the second air filter 15, and also on the negative Y-axis side of the second air filter 15.

[0126] In the state shown in Figure 12(A), the first pinion PG1 is positioned on the positive Y-axis direction side of the rack of the first air filter 14 and is engaged. Furthermore, in the state shown in Figure 12(A), the second pinion PG2 is positioned on the negative Y-axis side of the rack of the second air filter 15 and is engaged.

[0127] Here, the rack will be explained using a magnified view of a portion of the second air filter 15 in Figure 12(B). When the gear pitch of the racks provided in the first air filter 14 and the second air filter 15 is GP, as shown in Figure 12(B), the distance between the first pinion PG1 and the second pinion PG2 is GL = n·GP (where n is a natural number).

[0128] Furthermore, the length of the first air filter 14 and the second air filter 15 in the X-axis direction is set to be longer than the separation distance GL, and racks are formed on the first air filter 14 and the second air filter 15 along their entire width in the X-axis direction.

[0129] As a result, the racks of the first air filter 14 and the second air filter 15 are always engaged with at least one of the first pinion PG1 and the second pinion PG2, regardless of their transport position.

[0130] Therefore, in the state shown in Figure 12(A), when the first pinion PG1 rotates counterclockwise by the first drive motor DM1, the second drive motor DM2 is also driven counterclockwise in sync with the first drive motor DM1, and the second pinion PG2 is also driven counterclockwise.

[0131] As a result, the first air filter 14 is transported in the positive X-axis direction (to the left in Figure 12(A)), and the second air filter 15 is transported in the negative X-axis direction (to the right in Figure 12(A)).

[0132] Furthermore, when the first drive motor DM1 and the second drive motor DM2 rotate the first pinion PG1 and the second pinion PG2 counterclockwise, the first air filter 14 and the second air filter 15 are transported into the filter cleaning unit 13, respectively.

[0133] Furthermore, the first drive motor DM1 and the second drive motor DM2 cause the first pinion PG1 and the second pinion PG2 to rotate counterclockwise, causing the first air filter 14 and the second air filter 15 to pass through the filter cleaning unit 13 and reach the opposite side via the filter cleaning unit 13. That is, in Figure 12(A), the first air filter 14 reaches the left side of the filter cleaning unit 13, and the second air filter 15 reaches the right side of the filter cleaning unit 13.

[0134] As described above, the first air filter 14 is transported within the filter cleaning unit 13 in either the positive or negative X-axis direction, thereby collecting dust and debris from the upper surface of the first air filter 14 by the cleaning member CM1 and storing it in the filter cleaning unit 13, which functions as a dust box.

[0135] Similarly, cleaning members CM2 and CM3 collect dust trapped on the lower surface of the first air filter 14 and store it in the filter cleaning unit 13, which functions as a dust box.

[0136] Meanwhile, as the second air filter 15 is transported within the filter cleaning unit 13 in either the positive or negative X-axis direction, the cleaning member CM4 collects dust on the upper surface of the second air filter 15 and stores it in the filter cleaning unit 13, which functions as a dust box.

[0137] Similarly, cleaning members CM5 and CM6 collect dust trapped on the lower surface of the second air filter 15 and store it in the filter cleaning unit 13, which functions as a dust box.

[0138] Now, referring again to Figure 12, we will explain the operation of the second configuration example of the filter drive mechanism 42. The controller 41 of the indoor unit 10 operates according to the control program and determines whether the cleaning timing according to a predetermined setting has been reached or whether a cleaning instruction has been issued (step S11).

[0139] In the determination in step S11, if the cleaning timing has not yet been reached and no cleaning instruction has been given (step S11; No), the controller 41 enters a standby state.

[0140] In the determination in step S11, if the predetermined cleaning timing has been reached or a cleaning instruction has been given (step S11; Yes), the air filter is driven in the first cleaning direction (step S12).

[0141] Here, the first cleaning direction is the direction determined by the position of the first air filter 14 or the second air filter 15 before it is driven.

[0142] More specifically, in the example shown in Figure 11, the positions of the first air filter 14 and the second air filter 15 before operation are such that the first cleaning direction for the first air filter 14 is the first direction DR1 (positive direction in the X-axis direction), and the first cleaning direction for the second air filter 15 is the second direction DR2 (negative direction in the X-axis direction).

[0143] Then, the first air filter 14 and the second air filter 15 are transported through the filter cleaning unit 13, thereby performing a filter cleaning operation.

[0144] Next, the controller 41 determines whether the transport position of the air filter has reached the first drive end (step S13).

[0145] Here, the first drive end is the position of the first air filter 14 when the first air filter 14 and the second air filter 15 are transported in the first cleaning direction, corresponding to the position where the original second air filter 15 was located in Figure 12 (corresponding to the standby position of the second air filter 15), and corresponding to the position where the original first air filter 14 was located in Figure 12 (corresponding to the standby position of the first air filter 14).

[0146] In the determination in step S13, if the transport position of the air filter has not yet reached the first drive end (step S13; No), the controller 41 returns to step S12 to drive the first air filter 14 and the second air filter 15 in the first cleaning direction and continue transporting them.

[0147] In the determination in step S13, if the transport position of the air filter reaches the first drive end (step S13; Yes), the controller 41 drives the air filter in the second cleaning direction (step S14).

[0148] Here, the second cleaning direction is the opposite direction to the first cleaning direction. More specifically, in Figure 12(A), the first air filter 14 is transported in the first cleaning direction DR1 (positive X-axis direction), which is the first cleaning direction shown in Figure 10, and the second air filter 15 is transported in the second cleaning direction DR2 (negative X-axis direction), which is the first cleaning direction shown in Figure 11.

[0149] As a result, when the first air filter 14 is located to the left of the filter cleaning unit 13 and the second air filter 15 is located to the right of the filter cleaning unit 13, the second cleaning direction for the first air filter 14 is the second direction DR2 (negative direction in the X-axis direction), and the second cleaning direction for the second air filter 15 is the first direction DR1 (positive direction in the X-axis direction).

[0150] Next, the controller 41 determines whether the transport position of the air filter has reached the second drive end (step S15).

[0151] Here, the second drive end is the position shown in Figure 11 for the first air filter 14 and the second air filter 15, respectively, when the first air filter 14 and the second air filter 15 are transported in the second cleaning direction.

[0152] In the determination in step S15, if the second drive end has not yet been reached (step S15; No), the controller 41 proceeds back to step S14 and continues driving the first air filter 14 and the second air filter 15 in the second cleaning direction.

[0153] As a result, the first air filter 14 and the second air filter 15 pass through the filter cleaning unit 13 again and are cleaned again as described above. In the determination in step S15, if the second drive end is reached (step S15; Yes), the controller 41 determines whether cleaning is complete or not (step S16).

[0154] Whether cleaning is complete or not can be set arbitrarily, but for example, it can be set to complete when steps S12 to S15 have been performed once. Alternatively, if the dirt is estimated to be severe, it can be set to complete when the process has been performed multiple times.

[0155] Furthermore, in the above explanation, the minimum cleaning unit was one round trip of transporting the air filter. However, it is not limited to this, and it is also possible to configure the system so that the minimum cleaning unit is one transport of the air filter in either the first or second cleaning direction.

[0156] In the determination in step S16, if cleaning is not yet complete (step S16; No), the controller 41 proceeds back to step S12 and performs cleaning according to the procedure described above. In the determination in step S16, if cleaning is completed (step S16; Yes), the controller 41 terminates the process.

[0157] As described above, in the second configuration example of the filter drive mechanism, according to this first embodiment, it is possible to provide a filter cleaning mechanism and air conditioning system that are easily accessible to the user, easy to maintain, and do not cause a decrease in suction performance.

[0158] The controller of this embodiment includes a control device such as an MPU, a storage device such as ROM (Read Only Memory) or RAM, an external storage device such as an SSD (Solid State Drive), a display device for displaying various information, and an input device such as an operator, and has a hardware configuration that utilizes a normal computer.

[0159] The program executed by the controller of this embodiment is provided as an installable or executable file recorded on a semiconductor storage device such as a USB memory stick, or a computer-readable recording medium such as a DVD (Digital Versatile Disk).

[0160] Furthermore, the program executed by the controller of this embodiment may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network. Alternatively, the program executed by the controller of this embodiment may be provided or distributed via a network such as the Internet.

[0161] Alternatively, the controller program of this embodiment may be provided pre-installed in ROM or the like.

[0162] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents.

[0163] For example, in the above explanation, we described the case where there is one or two drive motors to drive the first air filter 14 and the second air filter 15 to transport them. However, it is also possible to configure a single air filter with multiple drive motors, such as providing one drive motor for each air filter in the vertical direction, for a total of four drive motors. This configuration allows for a lower rated output for each drive motor, resulting in reduced noise during cleaning and smoother air filter transport.

[0164] [Note] Other embodiments of the present invention are as follows: [1] The first other aspect A filter cleaning mechanism of the first other embodiment is: A filter cleaning unit comprising multiple filter transport paths, each equipped with a cleaning mechanism, arranged in a stacked configuration, A transport unit that transports a filter corresponding to the filter transport path via the filter transport path in a first direction and a second direction opposite to the first direction, It is equipped with. According to this embodiment, the size of the filter can be kept to the minimum required, while the amount of material transported during cleaning can be reduced, thereby providing a highly reliable filter cleaning mechanism.

[0165] [2] Second other aspect A second other embodiment of the filter cleaning mechanism is a filter cleaning mechanism of the first other embodiment, The filter cleaning unit includes a first filter transport path through which the first filter is transported, The system comprises a second transport path through which the second filter is transported, The transport unit drives either the first filter or the second filter, which is located on the second side relative to the cleaning unit, in the first direction. The other filter is driven in the second direction. According to this embodiment, the area required for installing the filter cleaning mechanism can be reduced, and consequently, the size of the indoor unit equipped with the filter cleaning mechanism can be made to be about the same as that of an indoor unit without a filter cleaning mechanism.

[0166] [3] A third other aspect A third other embodiment of the filter cleaning mechanism is, in the second other embodiment of the filter cleaning mechanism, The transport unit simultaneously performs the operation of driving one of the filters in the first direction and the operation of driving the other filter in the second direction. According to this embodiment, the filter cleaning time can be shortened.

[0167] [4] A fourth other aspect A fourth other embodiment of the filter cleaning mechanism is a filter cleaning mechanism of the first other embodiment, The aforementioned filter is provided with a rack. The transport unit comprises a pinion gear that meshes with the rack, and a drive motor that drives the pinion gear. It is equipped with. According to this embodiment, filter cleaning can be performed reliably with a simple configuration.

[0168] [5] A fifth other aspect A fifth other embodiment of the filter cleaning mechanism is a filter cleaning mechanism in which, The first filter is provided with a first rack, The second filter is provided with a second rack. The transport unit comprises a first pinion gear that meshes with the first rack, a first drive motor that drives the first pinion gear, a second pinion gear that meshes with the second rack, and a second drive motor that drives the second pinion gear. According to this embodiment, the rated capacity of the first drive motor and the second drive motor can be reduced, thereby reducing power consumption and noise during filter cleaning. Furthermore, since the first filter and the second filter can be controlled independently, reliability is improved.

[0169] [6] Sixth other aspect A sixth other embodiment of the filter cleaning mechanism is a filter cleaning mechanism of the second other embodiment, The first filter is provided with a first rack, The second filter is provided with a second rack. The transport unit comprises a first pinion gear that meshes with the first rack, a second pinion gear that meshes with the second rack, a drive motor that drives either the first or the second pinion gear, and a drive force transmission member that transmits the driving force of one of the pinion gears to the other of the first or the second pinion gear. According to this embodiment, filter cleaning can be performed efficiently with a simple configuration.

[0170] [7] Seventh other aspect A third other embodiment of the filter cleaning mechanism is a filter cleaning mechanism of the first other embodiment, Guide members are provided corresponding to each of the filter transport paths, for guiding the filters during transport. According to this embodiment, the filter can be reliably transported into the filter transport path by the guide member, and consequently, the filter can be reliably cleaned.

[0171] [8] Eighth other aspect The eighth other embodiment of the filter cleaning mechanism is, in the first other embodiment of the filter cleaning mechanism, The filter cleaning unit is provided across the entire width of the filter in a third direction that intersects with the first and second directions. The first filter and the second filter are transported so as to pass parallel to each other inside the cleaning unit from the first direction and the second direction, respectively. According to this embodiment, two filters can be cleaned in at least one cleaning operation, thereby reducing the cleaning time.

[0172] [9] The ninth other aspect The ninth other embodiment of the filter cleaning mechanism is, in the seventh other embodiment of the filter cleaning mechanism, The filter cleaning unit comprises a plurality of cleaning units arranged in a stacked state in the stacking direction of the filter transport path. At least one of the multiple cleaning units is provided with a dust guide section for guiding the collected dust. According to this embodiment, dust can be reliably collected from the entire surface of the filter with a simple process.

[0173]

[10] Tenth other aspect A tenth other embodiment of the filter cleaning mechanism is, in addition to the seventh other embodiment of the filter cleaning mechanism, The filter cleaning unit is installed so as to be removable while maintaining the filter in a predetermined standby position when the filter is in that standby position. According to this embodiment, the filter cleaning unit can be removed without removing the filter, thereby improving maintainability.

[0174]

[11] Eleventh other aspect An eleventh other embodiment of the filter cleaning mechanism is a filter cleaning mechanism of the first other embodiment, Each of the filter transport paths includes a first cleaning member that contacts the first surface of the filter and cleans the first surface, A second cleaning member that contacts the second surface of the filter opposite to the first surface and cleans the second surface, It is equipped with. According to this embodiment, the first cleaning member and the second cleaning member can simultaneously clean the front and back surfaces of the filter, thereby reducing the time required for filter cleaning.

[0175]

[12] Twelfth other aspect A filter cleaning mechanism of another 12th embodiment is a filter cleaning mechanism of another 11th embodiment, The first cleaning member and the second cleaning member are one of the following: a brush, a brush roller, a rotating mop, or a wiper-type cleaning member. According to this embodiment, the optimal cleaning material can be used depending on the environment in which the filter cleaning mechanism is installed, and consequently, the environment in which the indoor unit is installed, thereby improving cleaning efficiency.

[0176]

[13] Another 13th aspect A third other embodiment of an air conditioning system is: A filter cleaning unit is provided in the center of the longitudinal direction of the indoor unit's casing, and multiple filter transport paths equipped with cleaning mechanisms are arranged in a stacked configuration. The filter cleaning unit comprises a first filter positioned on the side in the first direction along the longitudinal direction, A second filter is positioned on the side of the filter cleaning unit in a second direction opposite to the first direction, A transport unit that transports the first filter and the second filter via the filter transport path corresponding to the first direction and the second direction opposite to the first direction, It is equipped with. According to this embodiment, the size of the filter can be kept to the minimum required, the amount of material transported during cleaning can be reduced, a highly reliable filter cleaning mechanism can be provided, and by providing the filter cleaning mechanism, an increase in the dimensions of the indoor unit of the air conditioner, and consequently an increase in the installation area, can be suppressed.

[0177]

[14] A 14th other aspect The 14th other embodiment of an air conditioning system is an air conditioning system of the 13th other embodiment, The first filter and the second filter are installed so as to be removable from the housing from a predetermined standby position. According to this embodiment, maintenance work such as vacuuming or washing can be easily performed with the first and second filters removed.

[0178]

[15] Another 15th aspect The 15th other embodiment of the air conditioning system is an air conditioning system of the 13th other embodiment or the 14th other embodiment, In the vertical direction when the indoor unit is mounted on the wall, the bottom of the filter cleaning unit is provided with a cover that opens its internal space. According to this embodiment, dust collected by the filter cleaning operation can be recovered without removing the filter cleaning unit from the indoor unit, thereby improving maintainability.

[0179]

[16] 16th other aspect The 16th other embodiment of the air conditioning system is an air conditioning system of the 13th other embodiment to the 15th other embodiment, The filter cleaning unit includes a first filter transport path through which the first filter is transported, The system comprises a second transport path through which the second filter is transported, The transport unit drives either of the first and second filters, whichever is located on the second side relative to the cleaning unit, in the first direction. The other filter is driven in the second direction. According to this embodiment, the area required for installing the filter cleaning mechanism can be reduced, and consequently, the size of the indoor unit equipped with the filter cleaning mechanism can be made to be about the same as that of an indoor unit without a filter cleaning mechanism.

[0180]

[17] 17th Other Aspect The 17th other embodiment of the air conditioning system is an air conditioning system of the 13th other embodiment to the 15th other embodiment, The transport unit simultaneously performs the operation of driving one of the filters in the first direction and the operation of driving the other filter in the second direction. According to this embodiment, the filter cleaning time can be shortened.

[0181]

[18] 18th Other Aspect The 18th other embodiment of the air conditioning system is an air conditioning system of the 13th other embodiment to the 15th other embodiment, The aforementioned filter is provided with a rack. The transport unit comprises a pinion gear that meshes with the rack, and a drive motor that drives the pinion gear. It is equipped with. According to this embodiment, the filter can be reliably driven and filter cleaning performed with a simple configuration.

[0182]

[19] 19th other aspect The 19th other embodiment of the air conditioning system is an air conditioning system of the 13th other embodiment to the 15th other embodiment, The first filter is provided with a first rack, The second filter is provided with a second rack, The transport unit comprises a first pinion gear that meshes with the first rack, a first drive motor that drives the first pinion gear, a second pinion gear that meshes with the second rack, and a second drive motor that drives the second pinion gear. According to this embodiment, the rated capacity of the first drive motor and the second drive motor can be reduced, thereby reducing power consumption and noise during filter cleaning. Furthermore, since the first filter and the second filter can be controlled independently, reliability is improved.

[0183]

[20] 20th other form The 20th other embodiment of the air conditioning system is an air conditioning system of the 13th to the 15th other embodiment, The first filter is provided with a first rack, The second filter is provided with a second rack. The transport unit comprises a first pinion gear that meshes with the first rack, a second pinion gear that meshes with the second rack, a drive motor that drives either the first or the second pinion gear, and a drive force transmission member that transmits the driving force of one of the pinion gears to the other of the first or the second pinion gear. According to this embodiment, filter cleaning can be performed efficiently with a simple configuration.

[21] 21st other aspect The 21st other embodiment of the air conditioning system is an air conditioning system of the 13th to the 15th other embodiment, Guide members are provided corresponding to each of the filter transport paths, for guiding the filters during transport. According to this embodiment, the filter can be reliably transported into the filter transport path by the guide member, and consequently, the filter can be reliably cleaned.

[0184]

[22] 22nd type of other The 22nd other embodiment of the air conditioning system is an air conditioning system of the 13th other embodiment to the 15th other embodiment, The filter cleaning unit is provided across the entire width of the filter in a third direction that intersects with the first and second directions. The first filter and the second filter are transported so as to pass parallel to each other inside the cleaning unit from the first direction and the second direction, respectively. According to this embodiment, two filters can be cleaned in at least one cleaning operation, thereby reducing the cleaning time.

[0185]

[23] 23rd other aspect The 23rd other embodiment of the air conditioning system is an air conditioning system of the 13th other embodiment to the 15th other embodiment, The filter cleaning unit comprises a plurality of cleaning units arranged in a stacked state in the stacking direction of the filter transport path. At least one of the multiple cleaning units is provided with a dust guide section for guiding the collected dust. According to this embodiment, dust can be reliably collected from the entire surface of the filter with a simple process.

[0186]

[24] 24th other aspect The 24th other embodiment of an air conditioning system is an air conditioning system of the 13th to the 15th other embodiment, The filter cleaning unit is installed so as to be removable while maintaining the filter in a predetermined standby position when the filter is in that standby position. According to this embodiment, the filter cleaning unit can be removed without removing the filter, thereby improving maintainability.

[0187]

[25] 25th Other Mode The 25th other embodiment of the air conditioning system is an air conditioning system of the 13th other embodiment to the 15th other embodiment, Each of the filter transport paths includes a first cleaning member that contacts the first surface of the filter and cleans the first surface, A second cleaning member that contacts the second surface of the filter opposite to the first surface and cleans the second surface, It is equipped with. According to this embodiment, the first cleaning member and the second cleaning member can simultaneously clean the front and back surfaces of the filter, thereby reducing the time required for filter cleaning.

[26] 26th other aspect A filter cleaning mechanism of another 26th embodiment is: A filter cleaning mechanism provided in the indoor unit of an air conditioning system, comprising a filter cleaning unit for cleaning the filter of the indoor unit, The filter cleaning unit is provided so as to extend in a direction including a vertical component in the longitudinal center of the housing of the indoor unit, The opening provided at the lower end of the cleaning unit is formed to face downwards. According to this embodiment, user access to the filter cleaning mechanism is made easier, and a decrease in suction performance can be suppressed.

[27] 27th Other Aspect The filter cleaning mechanism of the 27th other embodiment is, in the filter cleaning mechanism of the 26th other embodiment, The filter cleaning unit has a cleaning member and a dust box arranged in order along the thickness direction of the filter cleaning unit. According to this embodiment, debris can be reliably removed from the filter, and maintenance becomes easier.

[28] 28th Other Aspect The filter cleaning mechanism of the 28th other embodiment is, in the filter cleaning mechanism of the 26th other embodiment, The filter cleaning unit has two groups of cleaning members, each of which is equipped with multiple cleaning members. One cleaning member group is positioned on the first transport path through which the first filter is transported, and cleans both sides of the first filter. The other group of cleaning members is positioned on the second transport path through which the second filter is transported, and cleans both sides of the second filter. According to this embodiment, both sides of the filter can be reliably cleaned as the filter is transported.

[29] 29th other aspect The filter cleaning mechanism of the 29th other embodiment is, in the filter cleaning mechanism of the 28th other embodiment, The cleaning member group comprises a first cleaning member, a second cleaning member, and a third cleaning member. The first cleaning member, the second cleaning member, and the third cleaning member are each arranged on the opposite side of the corresponding filter, The first cleaning member is positioned offset from the second cleaning member and the third cleaning member. According to this embodiment, the load during filter transport can be reduced while more reliably cleaning both sides of the filter.

[30] 30th other aspect The 30th other embodiment of the filter cleaning mechanism is, in the 26th other embodiment of the filter cleaning mechanism The cleaning unit is constructed by stacking members that constitute the upper cleaning section, the lower cleaning section, and the bottom dust box section along the thickness direction of the filter cleaning unit. According to this embodiment, the configuration of the filter cleaning unit can be simplified while also facilitating the collection of waste.

[30] 30th other aspect The 30th other embodiment of the filter cleaning mechanism is, in the 28th other embodiment of the filter cleaning mechanism The first cleaning member, the second cleaning member, and the third cleaning member are separable from each other. According to this embodiment,

[31] 31st other aspect The 31st other embodiment of the filter cleaning mechanism is, in the 28th other embodiment of the filter cleaning mechanism The first cleaning member, the second cleaning member, and the third cleaning member are detachably attached to the filter cleaning unit. According to this embodiment, maintenance and replacement of cleaning components can be easily performed.

[32] 32 Other aspects The 32nd other embodiment of the air conditioning system includes a filter cleaning mechanism according to the 26th to 31st other embodiments, The filter cleaning unit comprises a first filter positioned on the side in the first direction along the longitudinal direction, A second filter is positioned on the side of the filter cleaning unit in a second direction opposite to the first direction, The system includes a transport unit that transports the first filter and the second filter via filter transport paths corresponding to a first direction and a second direction opposite to the first direction. According to this embodiment, it is possible to provide an air conditioning system that allows users to easily access the filter cleaning mechanism, does not cause a decrease in suction performance, and can easily maintain performance. [Explanation of Symbols]

[0188] 10 Indoor unit 11 cabinets 12-1 First Inlet 12-2 Second Inlet 13. Filter Cleaning Unit 13B Bottom casing 13BT Bottom Casing 13L Lid 13M Central Casing 13T Top Casing 14. First air filter 15. Second air filter 16 Support frame 17 Airflow channel 18 Indoor heat exchanger 19 Air outlet 20 Indoor Fans 31 Fitting part 33 Contact surface 41 Controllers 42 Filter drive mechanism 43 Remote Controller CM1 Cleaning component (first cleaning component, first group of cleaning components) CM2 Cleaning Member (Second Cleaning Member, First Cleaning Member Group) CM3 Cleaning Member (Third Cleaning Member, First Cleaning Member Group) CM4 Cleaning components (first cleaning component, second cleaning component group) CM5 Cleaning component (second cleaning component, second cleaning component group) CM6 Cleaning Member (Third Cleaning Member, Second Cleaning Member Group) DM drive motor DM1 First drive motor DM2 Second drive motor DPG drive pinion DR1 1st direction DR2 2nd direction DR2 1st direction DV drive belt GM1 Second guide member GM1 First Guide Member GM2 Second Guide Member GW1 1st Guide Wall GW2 2nd Guide Wall GW3 3rd Guide Wall PG1 First Pinion PG2 2nd pinion R1 First transport route R1 Second transport route R2 Second transport route SPG Driven Pinion

Claims

1. A filter cleaning mechanism provided in the indoor unit of an air conditioning system, comprising a filter cleaning unit for cleaning the filter of the indoor unit, The filter cleaning unit is provided so as to extend in a direction including a vertical component in the longitudinal center of the housing of the indoor unit, The opening provided at the lower end of the filter cleaning unit is formed to face downwards. Filter cleaning mechanism.

2. The filter cleaning unit has a cleaning member and a dust box arranged in order along the thickness direction of the filter cleaning unit. The filter cleaning mechanism according to claim 1.

3. The filter cleaning unit has two groups of cleaning members, each of which is equipped with multiple cleaning members. One group of cleaning members is arranged in the first transport path through which the first filter is transported, and cleans both sides of the first filter. The other group of cleaning members is arranged in the second transport path through which the second filter is transported, and cleans both sides of the second filter. The filter cleaning mechanism according to claim 1.

4. The cleaning member group comprises a first cleaning member, a second cleaning member, and a third cleaning member. The first cleaning member, the second cleaning member, and the third cleaning member are each arranged on the opposite side of the corresponding filter, The first cleaning member is positioned at a distance from the second cleaning member and the third cleaning member. The filter cleaning mechanism according to claim 3.

5. The filter cleaning unit is constructed by stacking members that constitute the upper cleaning section, the lower cleaning section, and the bottom dust box section along the thickness direction of the filter cleaning unit. The filter cleaning mechanism according to claim 1.

6. The first cleaning member, the second cleaning member, and the third cleaning member are separable from each other. The filter cleaning mechanism according to claim 4.

7. The first cleaning member, the second cleaning member, and the third cleaning member are detachably attached to the filter cleaning unit. The filter cleaning mechanism according to claim 4.

8. A filter cleaning mechanism according to any one of claims 1 to 7, The filter cleaning unit comprises a first filter positioned on the side in the first direction along the longitudinal direction, A second filter is positioned on the side of the filter cleaning unit in a second direction opposite to the first direction, A transport unit that transports the first filter and the second filter via filter transport paths corresponding to a first direction and a second direction opposite to the first direction, An air conditioning system equipped with [specific features / features].

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