JP2017067404A - Air-conditioning indoor machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning indoor machine including a cleaning unit configured to clean a filter, which can suppress ventilation resistance, and has high cleanability of the filter and maintainability of the cleaning unit.SOLUTION: An air-conditioning indoor machine 100 includes a filter 50 and a cleaning unit 60. The filter includes a filter body through which air passes. The cleaning unit includes a dust removal mechanism configured to remove dust adhering to the filter body of the filter. The cleaning unit moves along an air filter. The cleaning unit is disposed at a first position at the time of ventilation operation. The cleaning unit is disposed at a second position at which an overlapping area between the filter body and the cleaning unit is made larger than that at the first position, in a view of an air flow direction in which air passes through the filter body, at the time of maintenance of the cleaning unit.SELECTED DRAWING: Figure 10B

Description

  The present invention relates to an air conditioning indoor unit, and more particularly to an air conditioning indoor unit including a cleaning unit having a dust removing mechanism for removing dust attached to a filter.

  Conventionally, an air-conditioning indoor unit provided with an automatic cleaning function of a filter is known. For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2009-192211), a cleaning unit is fixedly disposed adjacent to a filter surface of a filter, and the filter is rotated during cleaning to remove dust attached to the filter by the cleaning unit. The structure to perform is disclosed.

  However, in the configuration as in Patent Document 1 (Japanese Patent Laid-Open No. 2009-192211), since the cleaning unit is disposed in the air flow path, the ventilation resistance is likely to increase.

  From the viewpoint of reducing the ventilation resistance, it is conceivable to arrange the cleaning unit at a position as far as possible from the air passage. However, when the cleaning unit is arranged in such a position, a part that is difficult to clean by the cleaning unit is generated in the filter, and the cleaning property of the filter is deteriorated, or the cleaning unit is arranged in a part that is difficult to reach by human hands. There is a risk that the maintainability of the unit may deteriorate.

  An object of the present invention is to provide an air conditioning indoor unit that includes a cleaning unit that cleans a filter, and that can suppress ventilation resistance and that has high filter cleaning properties and high cleaning unit maintenance properties. It is in.

  An air conditioning indoor unit according to a first aspect of the present invention includes a filter and a cleaning unit. The filter has a filter body through which air passes. The cleaning unit has a dust removing mechanism that removes dust attached to the filter body of the filter. The cleaning unit moves along the filter. The cleaning unit is located at the first position during the ventilation operation. During maintenance of the cleaning unit, the cleaning unit is located at a second position where the overlapping area between the filter body and the cleaning unit is larger than the first position in the flow direction of the air passing through the filter body.

  Here, the ventilation operation includes at least one of a cooling operation, a heating operation, and an air blowing operation.

  The flow direction of the air passing through the filter body is a main passage direction of the air of the filter body, and is a direction substantially perpendicular to the filter surface of the filter body.

  In the air conditioning indoor unit according to the first aspect of the present invention, the cleaning unit moves along the filter, and therefore it is easy to clean the filter all over. In the ventilation operation, the overlap area between the filter main body and the cleaning unit (hereinafter simply referred to as the overlap area between the filter main body and the cleaning unit) in the flow direction view of the air passing through the filter main body is set to the first position. Since the cleaning unit is located, ventilation resistance can be suppressed. On the other hand, at the time of maintenance of the cleaning unit, the cleaning unit is positioned at the second position where the overlapping area between the filter body and the cleaning unit is relatively large. In other words, at the time of maintenance of the cleaning unit, the cleaning unit is arranged not on the end side of the filter but on the center side. Therefore, it is easy for humans to reach the cleaning unit, and maintenance of the cleaning unit is easy.

  The air conditioning indoor unit according to the second aspect of the present invention is the air conditioning indoor unit according to the first aspect, and the cleaning unit is located at the second position when the operation is stopped.

  In the air conditioning indoor unit according to the second aspect of the present invention, since the cleaning unit is located at the second position when the operation is stopped, there is no need to perform a special operation or the like at the time of maintenance of the cleaning unit. Maintenance is possible and maintenance is high.

  The air conditioning indoor unit according to the third aspect of the present invention is the air conditioning indoor unit according to the second aspect, and further includes an instruction receiving unit and a drive unit. The instruction receiving unit receives an instruction to start ventilation operation. The drive unit moves the cleaning unit. When the instruction receiving unit receives an instruction to start ventilation operation when the operation is stopped, the driving unit moves the cleaning unit from the second position to the first position.

  In the air conditioning indoor unit according to the third aspect of the present invention, when the ventilation operation start instruction is received, the cleaning unit is moved from the second position to the first position, so that it is easy to reduce the ventilation resistance during the ventilation operation. It is.

  An air conditioning indoor unit according to a fourth aspect of the present invention is the air conditioning indoor unit according to any one of the first to third aspects, and the cleaning unit is detachable. The cleaning unit has a grip portion configured to hang at least fingers when it is removed. The air conditioning indoor unit further includes an adjacent member adjacent to the cleaning unit during the ventilation operation. When the cleaning unit is positioned at the second position, a gap into which a finger can be inserted is formed between the grip portion and the adjacent member. When the cleaning unit is located at the first position, a gap into which a finger can be inserted is not formed between the grip portion and the adjacent member.

  In the air conditioner indoor unit according to the fourth aspect of the present invention, during maintenance of the cleaning unit, a gap into which fingers can be inserted is formed between the adjacent member and the gripping portion of the cleaning unit, so that the cleaning unit can be easily It is detachable and has high maintainability. On the other hand, at the time of ventilation operation, since the gap | interval which can insert a finger is not formed between an adjacent member and the cleaning unit, it is easy to arrange | position a cleaning unit in the location which can suppress ventilation resistance.

  An air conditioning indoor unit according to a fifth aspect of the present invention is the air conditioning indoor unit according to any of the first to fourth aspects, and when the cleaning unit is located at the first position, the cleaning unit It arrange | positions in the position remove | deviated from the space adjacent to a filter main body.

  In the air conditioning indoor unit pertaining to the fifth aspect of the present invention, the cleaning unit is arranged at a position away from the windward space adjacent to the filter body during the ventilation operation. In other words, the cleaning unit is arranged at a position that is not opposed to the filter body during the ventilation operation. Therefore, it is easy to suppress the ventilation resistance by minimizing the overlapping area between the filter and the cleaning unit during the ventilation operation.

  The air conditioning indoor unit pertaining to the sixth aspect of the present invention is the air conditioning indoor unit pertaining to any of the first to fifth aspects, wherein the cleaning unit is at the extreme end position of the movable range of the cleaning unit. It is.

  In the air conditioning indoor unit according to the sixth aspect of the present invention, since the cleaning unit is disposed at the extreme end position of the movable range of the cleaning unit during the ventilation operation, the overlapping area between the filter and the cleaning unit is minimized, and the ventilation resistance Is easy to suppress.

  In the air conditioner according to the first aspect of the present invention, since the cleaning unit moves along the filter, it is easy to clean the filter all over. And at the time of ventilation operation, since a cleaning unit is located in the 1st position where the overlap area of a filter body and a cleaning unit is comparatively small, ventilation resistance can be controlled. On the other hand, during maintenance of the cleaning unit, the cleaning unit is arranged at the second position where the overlapping area between the filter body and the cleaning unit is relatively large, in other words, at the center side instead of the end side of the filter. Easy to reach and easy to maintain the cleaning unit.

  In the air conditioning indoor unit according to the second aspect of the present invention, there is no need to perform a special operation or the like at the time of maintenance of the cleaning unit, the maintenance of the cleaning unit can be performed immediately, and the maintainability is high.

  In the air conditioning indoor unit according to the third aspect of the present invention, it is easy to reduce the ventilation resistance during the ventilation operation.

  In the air conditioning indoor unit according to the fourth aspect of the present invention, the cleaning unit can be easily attached and detached during maintenance of the cleaning unit, and the maintainability is high. On the other hand, at the time of ventilation operation, it is easy to arrange the cleaning unit at a location where ventilation resistance can be suppressed.

  In the air conditioning indoor unit according to the fifth aspect or the sixth aspect of the present invention, it is easy to suppress the ventilation resistance by minimizing the overlapping area between the filter and the cleaning unit during the ventilation operation.

It is a perspective view showing the appearance of the air harmony device which has the air-conditioning indoor unit concerning one embodiment of the present invention. It is a circuit diagram which shows the outline | summary of a structure of the air conditioning apparatus of FIG. It is a perspective view which shows the external appearance of the air-conditioning indoor unit of FIG. It is sectional drawing of the IV-IV section arrow of the air-conditioning indoor unit of FIG. FIG. 4 is an exploded view illustrating a filter guide frame, a filter, and a front side sub dust box of the air conditioning indoor unit of FIG. 3. It is a perspective view of the filter of the air-conditioning indoor unit of FIG. It is a perspective view which shows the external appearance of the cleaning unit of the air-conditioning indoor unit of FIG. It is sectional drawing of the VIII-VIII cross section arrow of the cleaning unit of FIG. It is a figure for demonstrating switching with the 1st state of a dust removal mechanism of the cleaning unit of FIG. 7, and a 2nd state. The cleaning unit and the filter provided with the convex rib are enlarged and drawn. FIG. 9 is a view of the cleaning unit and the filter provided with the convex ribs as viewed from the right side in FIG. 3. It is a perspective view of the air-conditioning indoor unit of FIG. 3 during ventilation operation. In order to show the position of the cleaning unit, the front panel is omitted. The cleaning unit drawn with a two-dot chain line on the rear side is intended to indicate the movable range of the cleaning unit, and does not indicate the position of the cleaning unit during the blowing operation. During the air blowing operation, the cleaning unit is located at a position drawn by a solid line. It is a perspective view of the air-conditioning indoor unit of FIG. 3 during operation stop. In order to show the position of the cleaning unit, the front panel is omitted. The cleaning unit drawn with a two-dot chain line on the rear side is intended to indicate the movable range of the cleaning unit, and does not indicate the position of the cleaning unit during operation stop. While the operation is stopped, the cleaning unit is located at the position drawn with a solid line. FIG. 10B is an enlarged perspective view of the vicinity of the cleaning unit of the air conditioning indoor unit during operation stop of FIG. 10B. It is a perspective view of the unit drive part which moves the cleaning unit of FIG.

  Below, air-conditioning indoor unit 100 concerning one embodiment of the present invention is explained, referring to drawings. In addition, the following embodiment is only an illustration and can be changed suitably in the range which does not deviate from the meaning of this invention.

(1) Outline of configuration of air-conditioning apparatus having air-conditioning indoor unit An outline of the configuration of the air-conditioning apparatus 1 having the air-conditioning indoor unit 100 according to an embodiment of the present invention will be described.

  The air conditioner 1 mainly includes an air conditioning indoor unit 100 attached to an indoor wall WL (see FIG. 4) and the like, and an air conditioning outdoor unit 2 installed outdoors (see FIG. 1). The air conditioning indoor unit 100 and the air conditioning outdoor unit 2 are connected by a communication pipe 3.

  The air conditioning outdoor unit 2 mainly includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an expansion mechanism 14, an accumulator 15, an outdoor fan 21, and an outdoor control unit 24 (see FIG. 2). The air conditioning indoor unit 100 includes an indoor heat exchanger 16, an indoor fan 31, and an indoor side control unit 34 (see FIG. 2). Other configurations of the air conditioning indoor unit 100 will be described later.

  The air conditioner 1 includes the refrigerant circuit 10 by connecting the air conditioning indoor unit 100 and the air conditioning outdoor unit 2 via the connection pipe 3 (see FIG. 2). A vapor compression refrigeration cycle is performed by circulating the refrigerant in the refrigerant circuit 10. The refrigerant circuit 10 mainly includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an expansion mechanism 14, an accumulator 15, and an indoor heat exchanger 16 (see FIG. 2).

  The compressor 11 sucks the refrigerant from the suction pipe through the suction port, and compresses the sucked refrigerant. The compressed refrigerant is discharged from the discharge port of the compressor 11. The refrigerant discharged from the compressor 11 is sent to the first port 12a of the four-way switching valve 12 through the discharge pipe.

  The four-way switching valve 12 is a mechanism that switches the flow direction of the refrigerant. When the air conditioner 1 performs the cooling operation, the four-way switching valve 12 circulates the refrigerant between the first port 12a and the second port 12b as shown by the solid line, and at the same time the third port. A refrigerant is circulated between 12c and the fourth port 12d. When the air-conditioning apparatus 1 performs the heating operation, the four-way switching valve 12 causes the refrigerant to flow between the first port 12a and the fourth port 12d as shown by the broken line, and at the same time the second port. A refrigerant is circulated between 12b and the third port 12c.

  The outdoor heat exchanger 13 circulates mainly the liquid refrigerant between the gas side inlet / outlet for mainly allowing the gas refrigerant to flow between the second port 12 b of the four-way switching valve 12 and the expansion mechanism 14. And a liquid side inlet / outlet. The outdoor heat exchanger 13 exchanges heat between the refrigerant flowing through a heat transfer tube (not shown) connected between the liquid side inlet and outlet and the gas side inlet and outlet of the outdoor heat exchanger 13 and the outdoor air. When the air conditioner 1 performs the cooling operation, the outdoor heat exchanger 13 functions as a condenser that cools and condenses the refrigerant in the heat transfer tube. When the air conditioner 1 performs the heating operation, the outdoor heat exchanger 13 functions as an evaporator that heats and evaporates the refrigerant in the heat transfer tube.

  The outdoor fan 21 generates an air flow of outdoor air that passes through the outdoor heat exchanger 13 and promotes heat exchange between the refrigerant and the outdoor air in the outdoor heat exchanger 13.

  The expansion mechanism 14 is provided in a refrigerant pipe that connects the outdoor heat exchanger 13 and the indoor heat exchanger 16. The expansion mechanism 14 has a function of expanding and depressurizing the refrigerant flowing between the outdoor heat exchanger 13 and the indoor heat exchanger 16.

  The indoor heat exchanger 16 circulates mainly gas refrigerant between the liquid side inlet / outlet for mainly circulating liquid refrigerant between the expansion mechanism 14 and the fourth port 12d of the four-way switching valve 12. And a gas side entrance / exit. The indoor heat exchanger 16 exchanges heat between the refrigerant flowing through the heat transfer pipe 16a (see FIG. 4) connected between the liquid side inlet / outlet and the gas side inlet / outlet of the indoor heat exchanger 16 and the room air. . When the air conditioner 1 performs a cooling operation, the indoor heat exchanger 16 functions as an evaporator that evaporates the refrigerant in the heat transfer tube 16a, and cools indoor air that exchanges heat with the refrigerant. When the air conditioner 1 performs the heating operation, the indoor heat exchanger 16 functions as a condenser that condenses the refrigerant in the heat transfer tube 16a, and heats indoor air that exchanges heat with the refrigerant.

  The indoor fan 31 generates an air flow of indoor air that passes through the indoor heat exchanger 16 and promotes heat exchange between the refrigerant and the indoor air in the indoor heat exchanger 16.

  An accumulator 15 is provided in the suction pipe that connects the third port 12 c of the four-way switching valve 12 and the suction port of the compressor 11. In the accumulator 15, the refrigerant flowing from the third port 12 c of the four-way switching valve 12 to the compressor 11 is separated into gas refrigerant and liquid refrigerant. A gas refrigerant is mainly supplied from the accumulator 15 to the suction port of the compressor 11.

  The outdoor side control part 24 has CPU (not shown) and memory (not shown), for example. The outdoor side control part 24 is comprised so that operation | movement control of the air-conditioning outdoor unit 2 may be controlled according to the program etc. which are memorize | stored in memory. The outdoor control unit 24 is electrically connected to the compressor 11, the four-way switching valve 12, the expansion mechanism 14, the outdoor fan 21, and the like included in the air conditioning outdoor unit 2. The outdoor control unit 24 also includes an outdoor temperature sensor (not shown) for measuring the temperature of the outdoor air and an outdoor heat exchanger temperature sensor (not shown) for measuring the temperature of the outdoor heat exchanger 13. ) And are electrically connected. Furthermore, the outdoor side control unit 24 is electrically connected to an indoor side control unit 34 that controls the operation of the air conditioning indoor unit 100. The outdoor side control part 24 is based on the measurement result of the outdoor temperature sensor and the temperature sensor for outdoor heat exchangers, the signal transmitted from the indoor side control part 34, etc., the compressor 11, the four-way switching valve 12, and the expansion mechanism 14. And the operation of the outdoor fan 21 and the like is controlled.

  The indoor side control unit 34 includes, for example, a CPU (not shown) and a memory (not shown). The indoor side control unit 34 is configured to control the operation of the air conditioning indoor unit 100 in accordance with a program or the like stored in the memory. The indoor side control unit 34 is electrically connected to the indoor fan 31, the motor 69 of the unit driving unit 65 of the cleaning unit 60 described later, and a motor that drives the horizontal flap 43 and the vertical flap 49 described later. It is connected to the. The indoor control unit 34 also includes an indoor temperature sensor (not shown) for measuring the temperature of indoor air, and an indoor heat exchanger temperature sensor (not shown) for measuring the temperature of the indoor heat exchanger 16. ) And are electrically connected. Furthermore, the indoor side control unit 34 is electrically connected to the outdoor side control unit 24 that controls the operation of the air conditioning outdoor unit 2. The indoor side control unit 34 is based on measurement results of the outdoor temperature sensor and the outdoor heat exchanger temperature sensor, a signal transmitted from the outdoor side control unit 24, a user command of the air conditioner 1 transmitted from a remote controller (not shown), and the like. Thus, the operation of the indoor fan 31, the motor 69, the motor for driving the flaps 43 and 49, and the like are controlled.

(2) Air-conditioning indoor unit The air-conditioning indoor unit 100 will be described.

  In the description of the air conditioner indoor unit 100, expressions such as front (front), rear (back), left, right, top, and bottom may be used to describe the position and direction. Unless otherwise specified, the arrows in the figure shall be followed.

(2-1) General Configuration of Air Conditioning Indoor Unit FIG. 3 is a perspective view of the air conditioning indoor unit 100. FIG. 4 is a cross-sectional view of the air conditioning indoor unit 100 taken along the IV-IV section in FIG. The air conditioning indoor unit 100 is a wall-hanging type. The rear part of the air conditioning indoor unit 100 is attached to the wall WL (see FIG. 4).

  The air conditioning indoor unit 100 performs a ventilation operation in which air is blown out from the air outlet 46 (see FIG. 4). The ventilation operation includes a cooling operation, a heating operation, and an air blowing operation. In the cooling operation, the air conditioning indoor unit 100 blows out indoor air cooled by exchanging heat with the refrigerant flowing through the heat transfer pipe 16a of the indoor heat exchanger 16 from the outlet 46, and cools the indoor space RS. In the heating operation, the air conditioning indoor unit 100 blows out the indoor air heated by exchanging heat with the refrigerant flowing through the heat transfer pipe 16a of the indoor heat exchanger 16 from the outlet 46 to heat the indoor space RS. In the air blowing operation, the air conditioning indoor unit 100 blows out room air from the outlet 46 to the indoor space RS without exchanging heat between the refrigerant and the room air (without circulating the refrigerant in the refrigerant circuit 10). The air conditioning indoor unit 100 may not perform all of the cooling operation, the heating operation, and the air blowing operation as the ventilation operation. For example, only the cooling operation may be performed as the ventilation operation.

  The air conditioning indoor unit 100 includes a casing 40, an indoor heat exchanger 16, an indoor fan 31, a filter 50, a filter support frame 90, a cleaning unit 60, and a front sub-dust box 80 (FIG. 4). reference).

(2-2) Detailed Configuration of Air Conditioning Indoor Unit (2-2-1) Casing The casing 40 has a substantially rectangular parallelepiped shape that extends long in the lateral direction (left-right direction) (see FIG. 3). The air conditioning indoor unit 100 is installed on the wall WL by attaching the back side of the casing 40 to an attachment plate (not shown) provided on the wall WL. The casing 40 accommodates the indoor heat exchanger 16, the indoor fan 31, the filter 50, the filter support frame 90, the cleaning unit 60, the front side sub dust box 80, and the like (see FIG. 4).

  As shown in FIG. 3, the casing 40 includes a front plate 41 that covers the front surface of the air conditioning indoor unit 100, and two side plates 42 that respectively cover the right side surface and the left side surface of the air conditioning indoor unit 100 (see FIG. 3). ). The upper end of the front plate 41 is connected to the two side plates 42 by hinges (not shown). The front plate 41 is configured to be rotatable by a hinge. The front side of the casing 40 is opened by rotating the front plate 41 covering the front of the air conditioning indoor unit 100 so that the lower end thereof moves forward and upward. When the front side of the casing 40 is opened, maintenance of the cleaning unit 60 and the front side sub-dust box 80 can be performed from the front side of the air conditioning indoor unit 100. More specifically, the cleaning unit 60 and the front side sub dust box 80 can be taken out of the casing 40 from the front side of the air conditioning indoor unit 100 by opening the front side of the casing 40.

  A filter 50 is disposed on the upper side inside the casing 40 (see FIG. 4). As shown in FIG. 4, the filter 50 is formed in an inverted U shape in a side view. The filter 50 is supported mainly from below by a filter support frame 90 (see FIG. 4). The filter support frame 90 is also formed in an inverted U shape in a side view as shown in FIG. The indoor heat exchanger 16 is disposed below the filter 50 and the filter support frame 90 (see FIG. 4). The indoor heat exchanger 16 is also formed in an inverted U shape in a side view as shown in FIG. The filter 50 is disposed so as to cover the indoor heat exchanger 16 from above in a side view (see FIG. 4). An indoor fan 31 is disposed on the inner surface side of the indoor heat exchanger 16. As shown in FIG. 4, the indoor heat exchanger 16 is arranged so as to cover the indoor fan 31 from above in a side view. A cleaning unit moving space S1 in which a cleaning unit 60 to be described later moves is formed between the outer surface side of the filter 50 (the side opposite to the side where the indoor heat exchanger 16 is disposed) and the front plate 41 of the casing 40. (See FIG. 1).

  An upper surface suction port 44 is provided on the upper surface of the casing 40. When the indoor fan 31 is driven, room air in the vicinity of the upper surface suction port 44 is taken into the casing 40 from the upper surface suction port 44. The air taken in from the upper surface suction port 44 passes through the filter 50 and is sent to the indoor heat exchanger 16.

  A lower surface inlet 45 and an outlet 46 are formed on the lower surface of the casing 40.

  The lower surface suction port 45 is provided on the rear side (wall WL side) from the air outlet 46. The lower surface suction port 45 communicates with the space above the filter 50 via a suction flow path 47 formed inside the casing 40. When the indoor fan 31 is driven, room air in the vicinity of the lower surface suction port 45 is taken into the suction flow path 47 formed inside the casing 40 from the lower surface suction port 45, passes through the filter 50 and passes through the indoor heat exchanger. 16 is sent. The lower surface suction port 45 is provided with an opening / closing plate 45 a for opening and closing the lower surface suction port 45.

  The air outlet 46 is provided in front of the lower surface inlet 45. The air outlet 46 communicates with an air outlet passage 48 formed inside the casing 40. During the cooling operation and the heating operation, the indoor air sucked from the upper surface suction port 44 and the lower surface suction port 45 exchanges heat with the refrigerant in the indoor heat exchanger 16, and then passes through the blowout channel 48 and passes through the blowout port 46 to the indoor space. It is blown out to RS. During the air blowing operation, the indoor air sucked from the upper surface suction port 44 and the lower surface suction port 45 does not exchange heat with the refrigerant in the indoor heat exchanger 16, and passes from the outlet 46 to the indoor space RS through the outlet channel 48. Blown out.

  Two horizontal flaps 43 are attached to the vicinity of the air outlet 46 so as to be rotatable with respect to the casing 40. The horizontal flap 43 is rotated by a flap driving motor (not shown), and opens and closes the air outlet 46 according to the operating state of the air conditioning indoor unit 100. Further, the horizontal flap 43 has a function of changing the blowing direction of the room air upward / downward so that the air blown out from the outlet 46 is guided in the direction desired by the user.

  In addition, a vertical flap 49 is attached to the vicinity of the air outlet 46 so as to be rotatable with respect to the casing 40. The vertical flap 49 is rotated by a flap driving motor (not shown) and has a function of changing the blowing direction of room air to the left / right.

(2-2-2) Indoor heat exchanger The indoor heat exchanger 16 is mainly composed of a plurality of fins (not shown) and a plurality of heat transfer tubes 16a penetrating the plurality of fins. The indoor heat exchanger 16 functions as an evaporator or a condenser according to the operating state of the air conditioner 1, and exchanges heat between the refrigerant flowing through the heat transfer pipe 16 a and the air passing through the indoor heat exchanger 16. To do.

  As shown in FIG. 4, the indoor heat exchanger 16 has an inverted U-shape that opens downward in a side view. In other words, the indoor heat exchanger 16 is bent so that both ends (front end and rear end) are disposed below and the center portion is positioned upward (see FIG. 4). The indoor heat exchanger 16 is disposed so as to cover the indoor fan 31 from above. The indoor heat exchanger 16 is disposed below the filter 50 and the filter support frame 90 having an inverted U-shape when viewed from the side. The filter 50 and the filter support frame 90 are disposed so as to surround the indoor heat exchanger 16 from above (see FIG. 4).

(2-2-3) Indoor fan The indoor fan 31 is located in the center part of the inside of the casing 40, as FIG. 4 shows. The indoor fan 31 is a cylindrical cross flow fan that is elongated in the longitudinal direction (left-right direction) of the air conditioning indoor unit 100. When the indoor fan 31 is rotationally driven, room air is sucked from the upper surface suction port 44 and the lower surface suction port 45 and blown out from the blower outlet 46 to the indoor space RS through the blowout flow path 48.

(2-2-4) Filter The air conditioning indoor unit 100 includes two filters 50 (see FIG. 5). The two filters 50 have a similar structure. The two filters 50 are arranged side by side and surround the indoor heat exchanger 16 from above (see FIGS. 3 and 4).

  The filter 50 is a member that captures dust in the room air that passes through the filter 50. The filter 50 captures dust in the room air sucked from the upper surface suction port 44 and the lower surface suction port 45.

  The dust attached to the filter 50 is configured to be removed by a cleaning unit 60 described later at a predetermined timing or in response to a user command via a remote controller (not shown). The filter 50 is configured to be removable during maintenance.

  As shown in FIG. 4, each filter 50 has an inverted U-shape that opens downward in a side view. In other words, each filter 50 is bent so that both ends (front end and rear end) are disposed below and the center portion is positioned upward in a side view (see FIG. 4). Each filter 50 is arrange | positioned so that the indoor heat exchanger 16 may be covered from upper direction.

  Each filter 50 includes a filter body 51, an inner frame 52, a front end frame 53, a rear end frame 55, and a side frame 54 (see FIG. 6).

  The front end frame 53 is disposed at the front end of the filter 50. The front end frame 53 extends in the left-right direction.

  The rear end frame 55 is disposed at the rear end of the filter 50. The rear end frame 55 extends in the left-right direction.

  The side frames 54 are disposed at the right end and the left end of the filter 50. The side frame 54 extends in the front-rear direction from the front end frame 53 to the rear end frame 55 (see FIG. 6).

  The inner frame 52 has front and rear frames 52a and left and right frames 52b. The front / rear frame 52a extends in the front / rear direction from the front end frame 53 to the rear end frame 55 (see FIG. 6). The left and right frames 52b extend in the left-right direction from the side frame 54 on one side to the side frame 54 on the other side (see FIG. 6). Note that the numbers of the front and rear frames 52a and the left and right frames 52b illustrated are illustrative and are not limited thereto. The inner frame 52 divides an opening surrounded by the front end frame 53, the rear end frame 55, and the side frame 54 into a plurality of sections. A filter main body 51 is arranged in each section divided by the inner frame 52.

  The filter body 51 is formed in a net shape with, for example, a resin thread. The room air sucked from the upper surface suction port 44 and the lower surface suction port 45 passes through the filter body 51. Dust in the room air sucked from the upper surface suction port 44 and the lower surface suction port 45 is captured by the outer surface of the filter body 51. The air that has passed through the filter body 51 of the filter 50 is guided to the indoor heat exchanger 16.

  The front end frame 53 and the side frame 54 are provided with a plurality of convex ribs 54a. The plurality of convex ribs 54a are arranged in the front-rear direction. The convex ribs 54a are arranged at a predetermined interval from each other. The convex rib 54a is used for switching the state of a dust removing mechanism 70 of the cleaning unit 60 described later between a first state and a second state described later. The role of the convex rib 54a will be described later.

  A through groove 56 is formed in the vicinity of the left end and the right end of the front end frame 53 (see FIG. 6). Further, a notch 57 is formed in the center portion of the front end frame 53 in the left-right direction (see FIG. 6).

  When the filter 50 is mounted in the casing 40, the side frame 54 is rear end frame 55 so that the rear side of the side frame 54 of the filter 50 fits into a rail 92 provided on the filter support frame 90. It is inserted into the rail 92 from the side (see FIG. 5). Further, when the filter 50 is mounted inside the casing 4, a protrusion 93 provided on a filter support frame 90 described later is inserted into a through groove 56 formed in the front end frame 53 of the filter 50 (see FIG. 5). ). The rear side of the side frame 54 is engaged with the rail 92, and the protrusions 93 provided on the filter support frame 90 are inserted into the through grooves 56 formed in the front end frame 53. Placed in position.

  A rearward protruding portion 83 of a front side sub-dust box 80 described later is disposed in a notch 57 provided in the front end frame 53 of each filter 50. By arranging the front side sub dust box 80 with respect to the filter 50 in this way, at least a part of the front end frame 53 comes into contact with the rear wall 84 (see FIG. 4) of the front side sub dust box 80. As will be described later, when the front sub-dust box 80 is fixed at a predetermined position inside the casing 40, the movement of the end portion (front end frame 53) of the filter 50 toward the front side is caused by the rear wall 84 of the front sub-dust box 80. Regulated by In other words, the rear wall 84 of the front side sub dust box 80 functions as a filter locking mechanism that locks the end of the filter 50. The front sub-dust box 80 prevents the filter 50 from being displaced from a predetermined position during the operation of the air conditioning indoor unit 100.

(2-2-5) Filter guide frame The filter support frame 90 supports the filter 50 mainly on the lower side. Further, the filter support frame 90 defines the arrangement position of the filter 50 so that the filter 50 is arranged at a predetermined position in the casing 40.

  As shown in FIG. 4, the filter support frame 90 has an inverted U-shape that opens downward in a side view. In other words, the filter support frame 90 is bent so that both ends (the front end and the rear end) are disposed below and the central portion is positioned above in the side view (see FIG. 4). The filter support frame 90 is formed in an inverted U-shape that is substantially the same as the filter 50 in a side view so as to support the inner surface of the filter 50 on its outer surface.

  The filter support frame 90 has a rail 92 and a protrusion 93 as a mechanism for defining the arrangement position of the filter 50 so that the filter 50 is arranged at a predetermined position in the casing 40 (see FIG. 5).

  The rail 92 is provided on the upper rear side of the filter support frame 90 so as to guide the rear end frame 55 side of the side frame 54 of the filter 50 to a predetermined position (see FIG. 5). The rails 92 are provided at a total of four locations so as to correspond to the respective side frames 54 of the respective filters 50 in order to guide the left and right side frames 54 of the two filters 50 (see FIG. 5).

  The protrusion 93 is provided on the lower front side of the filter support frame 90 so as to guide the front end side of the filter 50 to a predetermined position (see FIG. 5). The protrusion 93 is provided so as to protrude forward. The protrusions 93 are provided at positions corresponding to the through grooves 56 provided at two positions on the front end frame 53 of each filter 50. That is, the protrusions 93 are provided at a total of four locations. Each protrusion 93 is inserted into the corresponding through groove 56 of the filter 50, so that the filter 50 is disposed at a predetermined position in the casing 40.

  A rear sub-dust box 91 that receives dust is provided at the rear of the filter support frame 90. The rear side sub dust box 91 is disposed in the vicinity of the rear end of the filter 50 (see FIG. 4). More specifically, the rear side sub-dust box 91 is disposed in the vicinity of the end of the filter 50 in the moving direction of the cleaning unit 60 (the front-rear direction as will be described later). Specifically, the rear sub-dust box 91 is provided below the rear end of the filter 50, that is, below the rear end of the rear end frame 55 of the filter 50. However, the arrangement of the rear sub-dust box 91 is not limited to this, and may be provided adjacent to the rear end of the filter 50. The rear side sub dust box 91 forms a dust storage space 91a. As shown in FIG. 4, the dust storage space 91 a is formed in a U-shaped groove shape that opens upward in a side sectional view. Part of the dust adhering to the filter 50 falls and is captured in the groove-shaped dust storage space 91a, and prevents the dust from falling to the lower surface suction port 45 or the like.

  The rear side sub dust box 91 is configured to be non-detachable. Preferably, the dust in the dust storage space 91a is configured to be sucked and removed by a vacuum cleaner or the like. The dust storage space 91a is designed to have a volume capable of storing dust that is expected to fall into the dust storage space 91a during a predetermined period (for example, 10 years).

(2-2-6) Cleaning unit The air conditioning indoor unit 100 includes two cleaning units 60 (see FIGS. 10A and 10B). The cleaning unit 60 removes dust adhering to the filter 50 while moving along the filter 50.

  Each cleaning unit 60 has a substantially rectangular parallelepiped shape (see FIG. 7). The cleaning unit 60 attached in the casing 40 extends in the left-right direction as the longitudinal direction (see FIGS. 10A and 10B). The two cleaning units 60 have the same structure and function. Each cleaning unit 60 corresponds to one of the filters 50. Each cleaning unit 60 is arranged adjacent to the corresponding filter 50. The two cleaning units 60 are arranged side by side (see FIGS. 10A and 10B).

  The cleaning unit 60 is driven by a unit driving unit 65 (see FIG. 12) so as to move in the front-rear direction. The cleaning unit 60 is configured to be movable from the foremost end position indicated by a solid line in FIG. 10A to the end end position indicated by a two-dot chain line in FIG. 10A. In FIG. 10A, the cleaning unit 60 located at the rearmost position is drawn with a two-dot chain line only for the cleaning unit 60 located on the right side.

  Each cleaning unit 60 has an insertion portion 63 that extends to the right from the right side wall of the cleaning unit 60 and an insertion portion 63 that extends to the left from the left side wall when mounted in the casing 40 (see FIG. 7). The unit driving unit 65 includes, for each cleaning unit 60, a cleaning unit attachment portion 66 into which the right side insertion portion 63 and the left side insertion portion 63 of the cleaning unit 60 are inserted (see FIG. 12). That is, the unit driving part 65 has a total of four cleaning unit attachment parts 66. The cleaning unit attachment portion 66 is configured to hold the inserted insertion portion 63. The insertion portion 63 of the cleaning unit 60 is configured to be detachable from the cleaning unit attachment portion 66. That is, the cleaning unit 60 is detachable.

  The cleaning unit 60 is in such a posture that a dust container 61 (to be described later) formed inside the cleaning unit 60 is disposed in the lower part in a state where the cleaning unit 60 is located at the front end of the movable range. It attaches to the attaching part 66 (refer FIG. 4). In the following, the end of the cleaning unit 60 disposed at the lower end in the state of FIG. 4 is referred to as a first end 62, and the end of the cleaning unit 60 disposed at the upper end in the state of FIG. This is referred to as part 64.

  When attaching / detaching the cleaning unit 60, the user puts his / her finger on the first end 62 of the cleaning unit 60 to perform the attaching / detaching operation of the cleaning unit 60. When removing the cleaning unit 60 from the cleaning unit mounting portion 66, the user puts his / her finger on the first end 62 of the cleaning unit 60 and removes the cleaning unit 60 from the cleaning unit mounting portion 66. In other words, the first end portion 62 of the cleaning unit 60 is a grip portion configured to hang a finger at least when the cleaning unit 60 is removed.

  The cleaning unit attachment portion 66 is open upward. When the cleaning unit 60 is attached to the cleaning unit attachment portion 66, the insertion portion 63 of the cleaning unit 60 is inserted into the cleaning unit attachment portion 66 from above. When removing the cleaning unit 60 from the cleaning unit mounting part 66, the user puts his / her finger on the first end 62 so that the insertion part 63 of the cleaning unit 60 is extracted from the cleaning unit mounting part 66. 60 is lifted upwards. The cleaning unit 60 can remove dust accumulated in the dust container 61 described later by removing the insertion portion 63 from the cleaning unit mounting portion 66 and opening a lid (not shown) provided in the cleaning unit 60. It is configured.

  Each cleaning unit mounting portion 66 is connected to a wire 67 that is stretched in the front-rear direction along the filter 50 via a connecting portion 68 (see FIG. 12). The wire 67 is wound around a pulley (not shown). One of the pulleys is connected to a motor 69 (see FIG. 12) and is configured to be rotatable by the motor 69. By driving the motor 69, the connecting portion 68 connected to the wire 67 is moved backward or forward. The cleaning unit attachment portion 66 to which the cleaning unit 60 is attached moves rearward along the filter 50 by being driven by the motor 69 so that the connecting portion 68 moves rearward. By driving the connecting portion 68 so as to move forward by the motor 69, the cleaning unit attaching portion 66 to which the cleaning unit 60 is attached moves forward along the filter 50.

  The configuration of the unit driving unit 65 described here is an example, and various types of configurations that can move the cleaning unit 60 along the filter 50 can be adopted for the unit driving unit.

  Hereinafter, the cleaning unit 60 on one side, particularly, the cleaning unit 60 disposed on the left side will be described in detail with reference to the drawings. Since the cleaning unit 60 on the other side (the cleaning unit 60 disposed on the right side) has the same structure and function, description thereof is omitted. The filter 50 mentioned in the following description about the cleaning unit 60 means the filter 50 (filter 50 arrange | positioned on the left side) corresponding to the cleaning unit 60 to explain, if there is no special mention.

  The cleaning unit 60 removes dust adhering to the filter 50. The cleaning unit 60 is disposed above the filter 50. In other words, the filter 50 is disposed on the outer surface side of the filter 50 (the side where the indoor heat exchanger 16 is not disposed) (see FIG. 4). The cleaning unit 60 is driven by the unit driving unit 65 (see FIG. 12) and moves along the filter 50. The cleaning unit 60 moves above the filter 50 toward the front (see arrow A2 in FIG. 9) and toward the rear (see arrow A1 in FIG. 9). That is, the cleaning unit 60 moves back and forth on the outer surface side of the filter 50. The cleaning unit 60 removes dust adhering to the filter 50 while moving along the filter 50.

  The cleaning unit 60 includes a dust removing mechanism 70 that removes dust attached to the filter 50 (see FIG. 4). The dust removing mechanism 70 particularly removes dust attached to the filter main body 51 of the filter 50. Moreover, the cleaning unit 60 has the dust accommodating part 61 which accommodates the dust removed by the dust removal mechanism 70 (refer FIG. 4). The dust removing mechanism 70 mainly includes a removing brush 71 and a peeling brush 72 (see FIG. 4).

  The removal brush 71 is disposed on the side facing the filter 50 (see FIG. 4). The removal brush 71 extends in the left-right direction. The removal brush 71 is configured to be rotatable around a rotation axis extending in the left-right direction. The removal brush 71 has a brush portion 71a (see FIG. 8) extending in the left-right direction. Tongue portions 73 extending toward the filter 50 are provided at the left and right ends of the removal brush 71 (see FIG. 7).

  The brush portion 71a is formed in an arc shape in a side view (see FIG. 8). The brush portion 71a is made of a pile fabric. The pile fabric is a hair fiber in which a pile yarn is folded into a base fabric. Moreover, the pile fabric used for the brush part 71a is an inclined pile in which the fur is inclined in a certain direction.

  The brush portion 71a is configured to be able to remove dust attached to the filter body 51 of the filter 50. When the cleaning unit 60 is driven by the unit driving unit 65 and moves rearward in a state where the brush unit 71a is in contact with the filter 50, the brush unit 71a is configured to capture dust adhering to the filter 50. In addition, the brush part 71a of the cleaning unit 60 extends in the left-right direction longer than the distance in the left-right direction between the side frames 54 of the filter 50 to which the cleaning unit 60 corresponds. Therefore, the brush part 71a can remove dust attached to the entire filter body 51 of the filter 50.

  When the dust removing mechanism 70 removes dust adhering to the filter 50, the brush portion 71 a is disposed at a position facing the filter 50 and contacts the filter 50. Here, it is defined that the dust removing mechanism 70 is in the first state when the brush portion 71a is disposed at a position facing the filter 50 and is in contact with the filter 50.

  In addition, when dust adheres excessively to the brush part 71a, there is a possibility that the dust attached to the brush part 71a may adhere to the filter 50 on the contrary. Therefore, the dust adhering to the brush portion 71 a is removed by a peeling brush 72 described later at a predetermined timing and is accommodated in the dust accommodating portion 61.

  When the brush portion 71a is stored inside the cleaning unit 60 in order to remove dust adhering to the brush portion 71a of the removal brush 71, the brush portion 71a does not once face the filter 50 and does not contact the filter 50. Placed in position. Here, it is defined that the dust removing mechanism 70 is in the second state when the brush portion 71a is not opposed to the filter 50 and is disposed at a position where it does not contact the filter 50.

  The tongue 73 is used to switch the state of the dust removing mechanism 70 between the first state and the second state. The tongue 73 is made of a plastic material such as rubber.

  When the brush portion 71a is opposed to and in contact with the filter 50 (when the dust removing mechanism 70 is in the first state), the tip of the tongue-like portion 73 is in a forward-facing state drawn with a two-dot chain line in FIG. Like the tongue 73b, it faces the front side (first end 62 side).

  When the cleaning unit 60 is moved forward (in the direction of arrow A2 in FIG. 9) by the unit driving unit 65 in a state where the tip of the tongue 73 is directed to the front side, the tip of the tongue 73 is moved to the filter 50. It abuts against one of the provided convex ribs 54a. When the cleaning unit 60 moves further forward (in the direction of arrow A2 in FIG. 9), the tongue-like portion 73 is pushed by the convex rib 54a, and the removal brush 71 rotates counterclockwise when viewed from the right side. As a result, the distal end of the tongue-like portion 73 faces the rear side (the second end portion 64 side) like the backward-like tongue-like portion 73a drawn with a solid line in FIG. In a state in which the tongue-like portion 73 faces the rear side, the brush portion 71a is accommodated in the cleaning unit 60, and the brush portion 71a does not face the filter 50 and does not contact. That is, when the cleaning unit 60 is moved forward by the unit driving unit 65 with the tip of the tongue-shaped portion 73 facing the front side, the state of the dust removing mechanism 70 changes from the first state to the second state. And can be switched.

  In the state in which the tip of the tongue-shaped portion 73 faces the front side (see the tongue-shaped portion 73b in the forward-facing state in FIG. 9), the removal brush 71 is not more in the right side view as shown in FIG. Cannot rotate in the direction. Therefore, even if the cleaning unit 60 moves rearward (in the direction of arrow A1 in FIG. 9) and comes into contact with the convex rib 54a, the removal brush 71 does not rotate. In this case, when the cleaning unit 60 moves rearward, the tongue-like portion 73 made of a plastic material is deformed and gets over the convex rib 54a. Even when the cleaning unit 60 moves rearward (in the direction of arrow A1 in FIG. 9) with the tip of the tongue-shaped portion 73 facing the front side, the state of the dust removing mechanism 70 is the first state. Does not change.

  A state in which the brush portion 71a does not contact the filter 50 and the tip of the tongue-like portion 73 faces the rear side (the second end portion 64 side) (see the tongue-like portion 73a in the rearward direction drawn with a solid line in FIG. 9) ), When the cleaning unit 60 is moved rearward (in the direction of arrow A1 in FIG. 9) by the unit driving unit 65, the tip of the tongue 73 is abutted against one of the convex ribs 54a provided in the filter 50. . When the cleaning unit 60 moves further rearward (in the direction of arrow A1 in FIG. 9), the tongue 73a in the rearward state is pushed by the convex rib 54a, and the removal brush 71 rotates in the clockwise direction when viewed from the right side. As a result, the front end of the tongue-like portion 73 faces the front side (the first end portion 62 side) like the tongue-like portion 73b in the forward direction indicated by the two-dot chain line in FIG. In a state where the tongue-like portion 73 faces the front side, the brush portion 71a is in a state of facing and contacting the filter 50. That is, when the cleaning unit 60 is moved rearward by the unit driving unit 65 in a state where the tip of the tongue-shaped portion 73 faces the rear side, the state of the dust removing mechanism 70 changes from the second state to the first state. And can be switched.

  In the state in which the tip of the tongue-shaped portion 73 faces the rear side (see the tongue-shaped portion 73a in the rearward direction in FIG. 9), the removal brush 71 is further counteracted in the right side view as shown in FIG. Cannot rotate clockwise. Therefore, even if the cleaning unit 60 moves forward (in the direction of arrow A2 in FIG. 9) and comes into contact with the convex rib 54a, the removal brush 71 does not rotate. In this case, when the cleaning unit 60 moves forward, the tongue 73 made of a plastic material is deformed and gets over the convex rib 54a. Even if the cleaning unit 60 moves forward (in the direction of arrow A2 in FIG. 9) with the tip of the tongue-shaped portion 73 facing rearward, the state of the dust removal mechanism 70 is the second state. Does not change.

  The peeling brush 72 is disposed inside the cleaning unit 60 (see FIG. 8). The peeling brush 72 extends in the left-right direction. The peeling brush 72 has a brush portion 72a extending in the left-right direction. The brush portion 72a is formed in an arc shape in a side view (see FIG. 8). The brush portion 72 a of the peeling brush 72 is made of a pile fabric as with the brush portion 71 a of the removal brush 71. The pile fabric of the brush portion 72a of the peeling brush 72 is also an inclined pile in which the fur line is inclined in a certain direction. The arc-shaped brush portion 72a is configured such that the inner surface thereof is in contact with the outer surface of the arc-shaped brush portion 71a of the rotating removal brush 71. A force is applied to the brush part 72a of the peeling brush 72 by a leaf spring 72b so as to be pressed against the brush part 71a of the rotating removal brush 71 (see FIG. 8).

  The peeling brush 72 removes dust from the brush portion 71a of the removal brush 71 as follows.

  First, in a state in which the tip of the tongue-shaped portion 73 faces the first end portion 62 side (see the tongue-shaped portion 73b in the forward-facing state in FIG. 9), the cleaning unit 60 is moved forward (arrow in FIG. When it is moved toward (A2 direction), the removal brush 71 is rotated counterclockwise when viewed from the right side, and the brush portion 71a of the removal brush 71 enters the cleaning unit 60. That is, when the cleaning unit 60 is moved forward by the unit driving unit 65 with the tip of the tongue-shaped portion 73 facing the first end 62 side, the state of the dust removing mechanism 70 is changed from the first state. Switch to the second state. Next, in a state where the tip of the tongue 73 is directed to the second end 64 (see the tongue 73a in the rearward direction in FIG. 9), the cleaning unit 60 is moved backward (see FIG. 9) by the unit drive unit 65. When moved in the direction of the arrow A1, the removal brush 71 rotates clockwise in a right side view while the brush portion 71a of the removal brush 71 and the brush portion 72a of the peeling brush 72 are in contact with each other. At this time, the dust adhering to the brush part 71a of the removal brush 71 is peeled off by the brush part 72a of the peeling brush 72, and the dust accommodating part 61 on the lower side of the cleaning unit 60 (the front side depending on the attitude of the cleaning unit 60). (See FIG. 8). When the removal brush 71 is rotated clockwise in the right side view, the state of the dust removal mechanism 70 is switched from the second state to the first state, and the removal brush 71 is in a state in which dust on the filter 50 can be removed. .

  The movement of the cleaning unit 60 (position where the cleaning unit 60 is arranged in each operation state) will be described below.

  During the ventilation operation of the air conditioning indoor unit 100, the cleaning unit 60 is located at the first position. FIG. 10A depicts the cleaning unit 60 located at the first position with a solid line. The first position is preferably the extreme end position (front end position) of the movable range of the cleaning unit 60. When the cleaning unit 60 is positioned at the first position, at least a part of the cleaning unit 60 is accommodated in a dust storage space 85 (described later) of the front side sub dust box 80. Specifically, when the cleaning unit 60 is located at the first position, the lower portion of the cleaning unit 60 is accommodated in the dust storage space 85 of the front side sub dust box 80. When the cleaning unit 60 is located at the first position, the first end 62 of the cleaning unit 60 is adjacent to the lower surface of the front sub-dust box 80 surrounding the lower part of the dust storage space 85 of the front sub-dust box 80 (FIG. 4). reference). When the cleaning unit 60 is located at the first position, no gap is formed between the first end 62 of the cleaning unit 60 and the front side sub dust box 80 so that a person can insert a finger. The front side sub dust box 80 is a member adjacent to the cleaning unit 60 during the ventilation operation. When the cleaning unit 60 is located at the first position, the cleaning unit 60 is a filter on the windward side of the filter 50 (the outer surface side of the filter 50, that is, the side opposite to the side where the indoor heat exchanger 16 is present with respect to the filter 50). It is arranged at a position deviating from the space adjacent to the 50 filter main bodies 51. In other words, when the cleaning unit 60 is located at the first position, the back surface (surface on the filter 50 side) of the cleaning unit 60 does not face the filter main body 51 of the filter 50. When the cleaning unit 60 is located at the first position, the back surface (surface on the filter 50 side) of the cleaning unit 60 faces the front end frame 53 of the filter 50. When the cleaning unit 60 is located at the first position, the overlapping area between the filter main body 51 and the cleaning unit 60 in the flow direction view of the air passing through the filter main body 51 of the filter 50 is substantially zero. The flow direction of the air passing through the filter body 51 is the main passage direction of the air of the filter body 51 and is substantially perpendicular to the filter surface of the filter body 51.

  When the indoor side control unit 34 receives an operation stop instruction during the ventilation operation of the air conditioning indoor unit 100, the indoor side control unit 34 controls the unit driving unit 65 to move the cleaning unit 60 from the first position to a later-described first position. Move to 2 position. The operation stop instruction here may be input immediately before or via a remote controller (not shown), or may be input in advance (reserved) via a remote controller (not shown). Good.

  The cleaning unit 60 is located at the second position when the operation of the air conditioning indoor unit 100 is stopped. 10B and 11 depict the cleaning unit 60 located at the second position. The second position is located on the rear side (upper side) of the front end position (first position) of the movable range of the cleaning unit 60. When the cleaning unit 60 is located at the second position, the entire cleaning unit 60 is disposed outside the dust storage space 85 of the front side sub dust box 80. When the cleaning unit 60 is located at the second position, a gap into which fingers can be inserted is formed between the first end 62 of the cleaning unit 60 and the front side sub dust box 80. More specifically, when the cleaning unit 60 is located at the second position, it is between the first end 62 of the cleaning unit 60 and the front wall 82 of the front side sub dust box 80 that surrounds the front of the dust storage space 85. The maximum distance B (see FIG. 11) is greater than the standard human finger thickness. Although the maximum distance B is 15 mm or more, for example, it is not limited to this. When the cleaning unit 60 is located at the second position, the filter main body 51 and the cleaning unit 60 in the flow direction view of the air passing through the filter main body 51 of the filter 50 are compared to when the cleaning unit 60 is located at the first position. The overlapping area of becomes larger.

  When the indoor side control unit 34 receives an instruction to start the ventilation operation when the operation of the air conditioning indoor unit 100 is stopped, the indoor side control unit 34 controls the unit driving unit 65 to move the cleaning unit 60 from the second position to the first position. Move to position. Here, the instruction to start the ventilation operation may be input immediately before or via a remote controller (not shown), or may be input (reserved) in advance via a remote controller (not shown). May be.

  When the indoor side control unit 34 determines that the filter 50 needs to be cleaned, the unit driving unit 65 moves the cleaning unit 60 as follows, and the filter 50 is cleaned. When the filter 50 is cleaned, the indoor fan 31 is not operated. The case where the indoor side control unit 34 determines that the filter 50 needs to be cleaned includes, for example, the case where the indoor side control unit 34 receives a user's filter cleaning instruction via a remote controller (not shown). In addition, the case where the indoor side control unit 34 determines that the filter 50 needs to be cleaned includes, for example, the case where the indoor side control unit 34 determines that the cleaning execution condition of the filter 50 is satisfied. The cleaning execution condition for the filter 50 is, for example, that the ventilation operation time after the previous cleaning of the filter 50 exceeds a predetermined time. Note that the case where the indoor side control unit 34 determines that the filter 50 needs to be cleaned is not limited to the above case.

  For example, when the indoor side control unit 34 determines that the filter 50 needs to be cleaned after the operation of the air conditioning indoor unit 100 is stopped, the indoor side control unit 34 controls the unit driving unit 65 and sets the cleaning unit 60 to the second state. Move from position to first position (front end position). Thereafter, the indoor side control unit 34 controls the unit driving unit 65 to gradually retract the cleaning unit 60 to the end position of the movable range of the cleaning unit 60 while causing the cleaning unit 60 to repeat the retreat / advance. At this time, the cleaning unit 60 alternately performs the removal of dust from the filter 50 by the brush portion 71a of the removal brush 71 and the removal of dust from the brush portion 71a of the removal brush 71 to which dust has adhered, The entire surface of the filter main body 51 is cleaned. When the cleaning unit 60 reaches the end position of the movable range of the cleaning unit 60, the indoor side control unit 34 controls the unit driving unit 65 to move the cleaning unit 60 to the second position and clean the filter 50. To complete.

(2-2-7) Front side sub-dust box The air conditioning indoor unit 100 includes a front side sub-dust box 80 (see FIG. 5). The two front side sub dust boxes 80 have the same structure. Each front side sub dust box 80 corresponds to one filter 50. Each front side sub dust box 80 is disposed in the vicinity of the end of the corresponding filter 50 in the moving direction (front-rear direction) of the cleaning unit 60. Each front side sub dust box 80 is disposed in the vicinity of the front end portion of the corresponding filter 50. The front side sub dust box 80 is disposed in front of the front end frame 53 of the filter 50 and adjacent to the front end frame 53. The two front side sub dust boxes 80 are arranged so as to be lined up on the left and right (see FIGS. 10A and 10B).

  In addition, arrangement | positioning of the front side sub dust box 80 is not limited to this. For example, instead of arranging the front side sub dust box 80 in front of the front end frame 53 of the corresponding filter 50, the front side sub dust box 80 may be arranged below the front end frame 53 of the corresponding filter 50.

  Each front sub-dust box 80 forms a dust storage space 85. As shown in FIG. 4, the dust storage space 85 is formed in a U-shaped groove that opens upward in a side sectional view. The dust storage space 85 is surrounded on the front side by the front wall 82 and on the rear side by the rear wall 84 (see FIG. 4). The front side sub-dust box 80 prevents dust from falling into a gap or the like of the air conditioning indoor unit 100, and part of the dust attached to the filter 50 falls and is captured in the dust storage space 85. The dust storage space 85 is designed to have a volume capable of storing dust that is expected to fall into the dust storage space 85 during a predetermined period (for example, 10 years). Each front sub-dust box 80 has a rear protrusion 83 that protrudes toward the back side (see FIG. 5).

  The front side sub dust box 80 is configured to be detachable. By making the front side sub dust box 80 removable, it is easy to remove the dust stored in the dust storage space 85.

  Each front side sub dust box 80 is disposed at a position adjacent to the front end frame 53 (front side sub dust box placement position) in front of the front end frame 53 of the corresponding filter 50 attached to the filter support frame 90. When the front side sub dust box 80 is attached to the front side sub dust box arrangement position, the rear protrusion 83 enters the notch 57 formed in the front end frame 53 of the filter 50. When the front side sub dust box 80 is arranged at the front side sub dust box arrangement position, at least a part of the front end frame 53 comes into contact with the rear wall 84 of the front side sub dust box 80. In this state, when the slide mechanisms 81 provided at the front left and right end portions of the front side sub dust box 80 are operated, the claw portions (not shown) are attached to the central frame 94 and the side frames 95 of the filter support frame 90. The front side sub dust box 80 is engaged and fixed to the front side sub dust box arrangement position inside the casing 40 (see FIG. 5). Since the front side sub dust box 80 is fixed to the front side sub dust box arrangement position inside the casing 40, the movement of the front end portion (front end frame 53) of the filter 50 toward the front side is caused by the rear wall 84 of the front side sub dust box 80. Regulated by That is, the front side sub dust box 80 has the rear wall 84 as a filter locking mechanism that locks the end of the filter 50. Therefore, the front side sub-dust box 80 prevents the filter 50 from being displaced from a predetermined position during the operation of the air conditioning indoor unit 100.

(4) Features (4-1)
The air conditioning indoor unit 100 of the embodiment includes a filter 50 and a cleaning unit 60. The filter 50 has a filter body 51 through which air passes. The cleaning unit 60 includes a dust removing mechanism 70 that removes dust attached to the filter body 51 of the filter 50. The cleaning unit 60 moves along the filter 50. The cleaning unit 60 is located at the first position during the ventilation operation. During the maintenance of the cleaning unit 60, the cleaning unit 60 is located at the second position where the overlapping area of the filter body 51 and the cleaning unit 60 is larger than the first position when viewed in the flow direction of the air passing through the filter body 51.

  Here, since the cleaning unit 60 moves along the filter 50, it is easy to clean the filter 50 all over. And at the time of ventilation operation, since the cleaning unit 60 is located in the 1st position where the overlap area of the filter main body 51 and the cleaning unit 60 in the flow direction view of the air which passes the filter main body 51 is comparatively small, ventilation resistance can be suppressed. . On the other hand, at the time of maintenance of the cleaning unit 60, the cleaning unit 60 is positioned at the second position where the overlapping area between the filter main body 51 and the cleaning unit 60 in the flow direction view of the air passing through the filter main body 51 is relatively large. In other words, at the time of maintenance of the cleaning unit 60, the cleaning unit 60 is arranged on the center side instead of the end side of the filter 50. Therefore, it is easy for humans to reach the cleaning unit 60, and maintenance of the cleaning unit 60 is easy.

(4-2)
In the air conditioning indoor unit 100 of the above embodiment, the cleaning unit 60 is located at the second position when the operation is stopped.

  Here, since the cleaning unit 60 is located at the second position when the operation is stopped, it is not necessary to perform a special operation or the like during the maintenance of the cleaning unit 60, and the cleaning unit 60 can be immediately maintained. High maintainability.

(4-3)
The air conditioning indoor unit 100 of the embodiment includes the indoor side control unit 34 as an example of an instruction receiving unit and a unit driving unit 65 as an example of a driving unit. The indoor side control unit 34 receives an instruction to start ventilation operation. The unit driving unit 65 moves the cleaning unit 60. When the indoor side control unit 34 receives an instruction to start the ventilation operation when the operation is stopped, the unit driving unit 65 moves the cleaning unit 60 from the second position to the first position.

  Here, when the ventilation operation start instruction is received, the cleaning unit 60 is moved from the second position to the first position, so that it is easy to reduce the ventilation resistance during the ventilation operation.

(4-4)
In the air conditioning indoor unit 100 of the above embodiment, the cleaning unit 60 is detachable. The cleaning unit 60 has a first end portion 62 as an example of a grip portion configured to hang a finger at least during removal. The air conditioning indoor unit 100 includes a front side sub dust box 80 as an example of an adjacent member adjacent to the cleaning unit 60 during the ventilation operation. When the cleaning unit 60 is positioned at the second position, a gap into which a finger can be inserted is formed between the first end portion 62 and the front side sub dust box 80. When the cleaning unit 60 is located at the first position, a gap into which fingers can be inserted is not formed between the first end 62 and the front side sub dust box 80.

  Here, during the maintenance of the cleaning unit 60, a gap into which fingers can be inserted is formed between the front side sub-dust box 80 and the first end 62 of the cleaning unit 60, so that the cleaning unit 60 can be easily attached and detached. High maintainability. On the other hand, at the time of ventilation operation, since the clearance which can insert a finger is not formed between the front side sub dust box 80 and the cleaning unit 60, it is easy to arrange | position the cleaning unit 60 in the location which can suppress ventilation resistance. .

(4-5)
In the air conditioning indoor unit 100 of the above embodiment, when the cleaning unit 60 is located at the first position, the cleaning unit 60 is disposed at a position away from the space adjacent to the upwind filter body 51.

  Here, the cleaning unit 60 is disposed at a position away from the windward space adjacent to the filter body 51 during the ventilation operation. In other words, the cleaning unit 60 is disposed at a position that does not face the filter body 51 (a position that does not face) during the ventilation operation. Therefore, during ventilation operation, it is easy to minimize the overlapping area between the filter 50 and the cleaning unit 60 and suppress ventilation resistance.

(4-6)
In the air conditioning indoor unit 100 of the above embodiment, the first position of the cleaning unit 60 is the extreme end position of the movable range of the cleaning unit 60.

  Here, since the cleaning unit 60 is disposed at the extreme end position of the movable range of the cleaning unit 60 during the ventilation operation, it is easy to minimize the overlapping area between the filter 50 and the cleaning unit 60 and suppress the ventilation resistance. It is.

(5) Modification A modification of the above embodiment is shown below. The modified examples may be appropriately combined as long as they do not contradict each other.

(5-1) Modification A
In the above embodiment, when the cleaning unit 60 is located at the first position, the overlapping area of the filter body 51 and the cleaning unit 60 in the flow direction view of the air passing through the filter body 51 of the filter 50 is substantially zero. However, the present invention is not limited to this.

  However, in order to suppress the ventilation resistance, the filter body 51 and the cleaning unit 60 overlap in the flow direction view of the air passing through the filter body 51 of the filter 50 when the cleaning unit 60 is located at the first position. The area is preferably as small as possible.

(5-2) Modification B
In the above embodiment, when the cleaning unit 60 is located at the first position, the back surface of the cleaning unit 60 faces the front end frame 53 of the filter 50. However, the present invention is not limited to this, and the first position may be a position where the back surface of the cleaning unit 60 does not face the filter 50. For example, when the cleaning unit 60 is positioned at the first position, the upper end of the cleaning unit 60 may be positioned below the front end of the front end frame 53.

  Further, when the cleaning unit 60 is located at the first position, a part of the back surface of the cleaning unit 60 may face the filter main body 51 of the filter 50. However, when the cleaning unit 60 is located at the first position, the cleaning unit 60 preferably does not face the filter body 51 of the filter 50.

(5-3) Modification C
The structure of the dust removal mechanism 70 shown in the above embodiment is an example, and the present invention is not limited to this. For example, in the dust removing mechanism 70, when the cleaning unit 60 moves along the filter 50, a cleaning member that removes dust attached to the filter 50 is rotationally driven by a motor or the like, and is attached to the filter 50 by the rotating cleaning member. It may be configured to remove the dust that has been removed. In addition, various structures can be employed for the dust removing mechanism 70.

(5-4) Modification D
In the said embodiment, although the air-conditioning indoor unit 100 has the front side sub dust box 80, it is not limited to this.

  For example, the air conditioning indoor unit 100 may not be provided with the front side sub-dust box 80, and the cleaning unit 60 and the frame of the casing 40 may be adjacent to each other during the ventilation operation. In this case, when the cleaning unit 60 is located at the second position, a gap into which fingers can be inserted is not formed between the first end 62 of the cleaning unit 60 and the frame of the casing 40. When located at one position, it is preferable that a gap into which a finger can be inserted is formed between the first end 62 of the cleaning unit 60 and the frame of the casing 40.

(5-5) Modification E
In the air conditioning indoor unit 100 of the above embodiment, when the cleaning unit 60 is located at the first position, a part of the cleaning unit 60 (the lower part of the cleaning unit 60) is placed inside the front side sub dust box 80 (dust storage space 85). However, the present invention is not limited to this.

  For example, the cleaning unit 60 may be configured such that the entire cleaning unit 60 is accommodated in the dust storage space 85 when the cleaning unit 60 is located at the first position.

  Further, for example, the cleaning unit 60 may be configured to be disposed outside the dust storage space 85 even when the cleaning unit 60 is located at the first position. However, when the cleaning unit 60 is located at the first position, at least a part of the cleaning unit 60, particularly the lower side, may be accommodated in the front side sub-dust box 80 (dust storage space 85). preferable.

(5-6) Modification F
In the said embodiment, although the air conditioning indoor unit 100 is each provided with the filter 50, the cleaning unit 60, and the front side sub dust box 80, these numbers are illustrations and it is not limited to this. For example, the air conditioning indoor unit 100 may include one each of the filter 50, the cleaning unit 60, and the front side sub dust box 80, or may include the filter 50, the cleaning unit 60, and the front side sub dust box 80. Three or more may be provided.

  Further, the number of the filters 50, the cleaning unit 60, and the front side sub dust box 80 need not all be the same. For example, the air conditioning indoor unit 100 may include two filters 50 and the cleaning unit 60 and one front side sub dust box 80. One front sub-dust box 80 may be arranged near the ends of the two filters 50.

(5-7) Modification G
In the said embodiment, although the cleaning unit 60 is located in a 2nd position at the time of a driving | operation stop, it is not limited to this. For example, even when the operation is stopped, the cleaning unit 60 may be configured to be normally positioned at the first position or the third position other than the first position and the second position.

  And, for example, in the air conditioning indoor unit 100, when the cleaning unit 60 is maintained, the user transmits a command via a remote controller (not shown) so that the indoor side control unit 34 controls the unit driving unit 65, The cleaning unit 60 may be configured to move from the first position to the second position.

  Further, for example, when the air conditioning indoor unit 100 rotates the front plate 41 covering the front surface of the air conditioning indoor unit 100 and opens the front surface of the air conditioning indoor unit 100, the cleaning unit 60 is moved by a physical mechanism. It may be configured to move to the second position. In addition, for example, the air conditioning indoor unit 100 detects opening of the front surface of the air conditioning indoor unit 100 with a sensor or the like, and the indoor control unit 34 controls the unit driving unit 65 according to the detection result, so that the cleaning unit 60 is It may be configured to move to two positions.

(5-8) Modification H
In the said embodiment, although the air-conditioning indoor unit 100 is a wall-hanging type air-conditioning indoor unit, it is not limited to this. The air conditioning indoor unit may be a ceiling cassette type air conditioning indoor unit attached to the ceiling. The cleaning unit of the ceiling cassette type air conditioning indoor unit is located at the first position during the ventilation operation, and the maintenance of the cleaning unit overlaps the filter body and the cleaning unit in the flow direction of the air passing through the filter body. You may comprise so that an area may be located in the 2nd position larger than a 1st position.

  An air conditioning indoor unit according to the present invention is an air conditioning indoor unit that includes a cleaning unit that cleans a filter. The air conditioning indoor unit is capable of suppressing ventilation resistance and has high filter cleaning properties and high maintainability of the cleaning unit. It is to provide.

34 Indoor control unit (instruction receiving unit)
50 Filter 51 Filter body 60 Cleaning unit 62 First end (gripping part)
65 Unit drive unit (drive unit)
70 Dust removal mechanism 80 Front side sub dust box (adjacent member)
100 Air conditioning indoor unit

JP 2009-19221 A

Claims (6)

A filter (50) having a filter body (51) through which air passes;
A cleaning unit (60) having a dust removing mechanism (70) for removing dust adhering to the filter body of the filter, and moving along the filter;
With
The cleaning unit is
During ventilation operation, it is located in the first position,
During maintenance of the cleaning unit, the overlapping area of the filter body and the cleaning unit in a flow direction view of air passing through the filter body is located at a second position larger than the first position.
Air conditioning indoor unit (100). The cleaning unit is located at the second position when the operation is stopped.
The air conditioning indoor unit according to claim 1. An instruction receiving unit (34) for receiving an instruction to start ventilation operation;
A drive unit (65) for moving the cleaning unit;
Further comprising
When the instruction receiving unit receives an instruction to start the ventilation operation when the operation is stopped, the driving unit moves the cleaning unit from the second position to the first position.
The air conditioning indoor unit according to claim 2. The cleaning unit is detachable and has at least a gripping part (62) configured to hang fingers when removed.
The air conditioning indoor unit further includes an adjacent member (80) adjacent to the cleaning unit during the ventilation operation,
When the cleaning unit is located at the second position, a gap into which a finger can be inserted is formed between the grip portion and the adjacent member,
When the cleaning unit is located at the first position, a gap into which a finger can be inserted is not formed between the grip portion and the adjacent member.
The air conditioning indoor unit according to any one of claims 1 to 3. When the cleaning unit is located at the first position, the cleaning unit is disposed at a position away from the space adjacent to the filter body on the windward side,
The air conditioning indoor unit according to any one of claims 1 to 4. The first position is the extreme end position of the movable range of the cleaning unit.
The air conditioning indoor unit according to any one of claims 1 to 5.

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