Air conditioning device

Abstract

To provide an air conditioning device capable of surely removing dust attached to a cross flow fan.SOLUTION: A brush portion 76 has outer edge portion cleaning brushes 78 kept into contact with an outer edge portion 33b of a cross flow fan 33 at tips, and a brush installation surface 76a having a shape along the cross flow fan 33, and the outer edge portion cleaning brushes 78 are disposed on different places of the brush installation surface 76a, so that tips of the outer edge portion cleaning brushes 78 are overlapped. As dust is easily fastened to the outer edge portion 33b of the cross flow fan 33, there is a high possibility that the dust cannot be sufficiently removed only by light touch of the brushes. In cleaning the cross flow fan 33, the tips of the brushes are overlapped to each other so that outer edge portion cleaning brushes 78 of high concentration are strongly kept into contact with the outer edge portion 33b of the cross flow fan 33. As the brush tips of the outer edge portion cleaning brushes 78 are continuously kept into contact with the outer edge portion 33b without being broken, the dust attached to the outer edge portion 33b of the cross flow fan 33 can be sufficiently removed, and cleanliness of the cross flow fan 33 is improved.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an air conditioner for adjusting a room temperature. [Background technology]

[0002] Air conditioners are widely used to adjust the temperature inside a house, etc. Patent Document 1 discloses a technique related to air conditioners.

[0003] An air conditioner as disclosed in Patent Document 1 has a case fixed to a wall, a cross-flow fan housed in the case and rotating to blow air into a room, and a brush unit arranged to be able to come into contact with the cross-flow fan for cleaning the cross-flow fan.

[0004] According to the air conditioner, dust adhering to the cross-flow fan can be removed by rotating the cross-flow fan with the brush portion in contact with the cross-flow fan. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-143961 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, this conventional device is provided with a brush section in which only a brush with a length that extends from the outer edge of the cross-flow fan to the inner periphery is installed. The applicant confirmed through testing that, when the air conditioner continues to blow air, dust adheres to the cross-flow fan on the part of the cross-flow fan that is on the inner side of the outer edge and near the outer edge, and that dust adhered to the outer edge in particular sticks to the cross-flow fan. Furthermore, the dust adhered to the outer edge of the cross-flow fan cannot be removed simply by contacting the cross-flow fan with a brush with a length that extends from the outer edge to the inner periphery, and dirt remains, so there is room for improvement. [Means for solving the problem]

[0007] In order to solve the above problem, in claim 1 of the present invention, a case is provided with an air intake port capable of taking in air from the outside and an air outlet port capable of blowing the taken-in air out to the outside, a cross-flow fan that is rotatably supported by the case and rotates to blow air, a cleaning mechanism is installed in the case, the cleaning mechanism having a brush portion extending from a main body portion to the cross-flow fan and capable of cleaning the cross-flow fan; the brush portion includes an outer edge cleaning brush having a tip that contacts an outer edge of the cross-flow fan, and a brush installation surface that is shaped to fit along the cross-flow fan, The outer edge cleaning brushes are mounted at different positions on the brush mounting surface, so that the tips of the outer edge cleaning brushes overlap.

[0008] In claim 2, the brush portion has an inner circumferential side cleaning brush that contacts the inner circumferential side of the cross-flow fan, the brush installation surface is composed of a first surface and a second surface having different inclination angles with respect to a straight line extending outward from an axial center of the cross-flow fan, and one end of the first surface is connected to the other end of the second surface, The cleaning device is characterized in that the outer edge cleaning brush and the inner circumference cleaning brush are disposed on the first surface and the second surface, respectively, such that the outer edge cleaning brush is closer to the connection portion between the first surface and the second surface than the inner circumference cleaning brush.

[0009] In addition, in claim 3, a guide surface portion that guides the air blown by the cross-flow fan toward the air outlet is formed on the case along an axis of the cross-flow fan, The cleaning mechanism is installed on the guide surface portion, The cleaning mechanism is characterized by having a main body portion movable along the guide surface portion, and a sheet that is detachably attached to the main body portion and can wipe away dust adhering to the guide surface portion.

[0010] In addition, in claim 4, the cleaning mechanism further includes a drive unit for driving the main body, the drive unit includes a motor that is activated by energization, and a drive force transmission unit that is connected to the motor and transmits the drive force of the motor to the main body unit; The driving force transmission portion extends substantially parallel to an axis of the cross-flow fan. Effect of the Invention

[0011] According to this invention, the brush section has an outer edge cleaning brush whose tip contacts the outer edge of the cross-flow fan, and a brush mounting surface shaped to fit the cross-flow fan, and by mounting the outer edge cleaning brushes at different locations on the brush mounting surface, the tips of the outer edge cleaning brushes overlap, and the high-density brush comes into contact with the outer edge of the cross-flow fan, effectively removing dust adhering to the outer edge of the cross-flow fan, thereby improving the cleanliness of the cross-flow fan. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a schematic diagram illustrating an air conditioner according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view of the indoor unit shown in FIG. [Diagram 3] 3 is a perspective view of the indoor unit shown in FIG. 2 with a fan removed from the case. FIG. [Figure 4] 3 is a cross-sectional view of the indoor unit shown in FIG. 2 as viewed from the right side. [Diagram 5] FIG. 4 is an enlarged view of the cleaning mechanism shown in FIG. [Figure 6] FIG. 4 is a cross-sectional view illustrating a cleaning mechanism. [Figure 7] FIG. 4 is a view of the brush unit of the embodiment as viewed from the right side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] An embodiment of the present invention will be described below with reference to the accompanying drawings, in which Fr indicates front, Rr indicates rear, Le indicates left, Ri indicates right, Up indicates top, and Dn indicates bottom.

[0014] Please refer to Fig. 1. Fig. 1 shows an air conditioner 10 according to the present invention. The air conditioner 10 has a cooling function for cooling the indoor space In, and a heating function for heating the indoor space In.

[0015] The air conditioner 10 includes an outdoor unit 20 provided outdoors (Ou) and an indoor unit 30 provided indoors (In). The outdoor unit 20 and the indoor unit 30 are connected to each other so that a refrigerant can circulate. Hereinafter, unless otherwise specified, the direction in which the refrigerant circulates is based on the cooling operation.

[0016] The outdoor unit 20 has a four-way switching valve 21 that switches the direction in which the refrigerant circulates during cooling operation and heating operation, a compressor 22 through which the refrigerant that has passed through this four-way switching valve 21 flows and compresses the refrigerant, an outdoor heat exchanger 23 through which the refrigerant that has been compressed in the compressor 22 and has become high-temperature and high-pressure flows, an outdoor fan 24 that blows air towards the outdoor heat exchanger 23, and an expansion valve 25 that reduces the pressure of the refrigerant that has passed through the outdoor heat exchanger 23.

[0017] The indoor unit 30 is used by hanging it on a wall Wa inside the room In. A case 40 of the indoor unit 30 is fixed to the wall Wa via a support plate. The case 40 extending in the left-right direction houses a cross-flow fan 33 that takes in air from the room In into the case 40 and blows it out to the room In, an indoor heat exchanger 34 that exchanges heat with the air taken in by the cross-flow fan 33, and a cleaning mechanism 50 that can wipe away dust adhering to the inside of the case 40 and can remove dust adhering to the cross-flow fan 33.

[0018] During cooling operation, the refrigerant that has been made high temperature and high pressure by the compressor 22 exchanges heat with outside air in the outdoor heat exchanger 23, releasing heat. At this time, the outdoor fan 24 operates to forcibly flow outside air around the outdoor heat exchanger 23, promoting heat exchange. The refrigerant that has passed through the outdoor heat exchanger 23 and released heat is reduced in pressure by the expansion valve 25, and its temperature drops. The cooled refrigerant is sent to the indoor unit 30.

[0019] Air is introduced into the case 40 of the indoor unit 30 by operating the cross-flow fan 33. The introduced air passes around the periphery of the indoor heat exchanger 34 and is sent to the indoor space In. The indoor heat exchanger 34 is supplied with refrigerant that has been cooled in the outdoor unit 20. The air passing around the periphery of the indoor heat exchanger 34 exchanges heat with the refrigerant and is cooled. The cooled air is sent to the indoor space In.

[0020] During heating operation, the four-way switching valve 21 switches the flow path of the refrigerant, circulating the refrigerant in the opposite direction to that during cooling operation.

[0021] Please refer to Fig. 2. An air intake 41 capable of taking in air from the outside (indoors In) is opened on the top surface of the case 40. An air outlet 42 capable of blowing air out to the outside (indoors In) is opened on the front lower part of the case 40. The air outlet 42 is provided with up and down louvers 36 that can open and close the air outlet 42 and adjust the direction in which the air is blown out vertically.

[0022] Please refer to Figures 3 and 4. Left and right louvers 37 that can adjust the air blowing direction in the left and right direction are provided behind the up and down louvers 36 (see Figure 2). Case 40 has a case main body 43 that rotatably supports cross-flow fan 33, and a cover 44 that is fixed to case main body 43 and covers a part of case main body 43.

[0023] Cross-flow fan 33 has multiple fan blades 33a, which are formed to extend from the inner periphery side toward outer edge 33b. Cross-flow fan 33 can blow air taken in through air intake 41 out of air outlet 42 by rotating clockwise.

[0024] Case 40 is formed with a guide surface 45 that guides air blown by cross-flow fan 33 toward air outlet 42 (see FIG. 2). Guide surface 45 is formed along the longitudinal direction of case 40, in the direction in which axis C of cross-flow fan 33 extends. Hereinafter, the space between cross-flow fan 33 and guide surface 45 will be referred to as air passage AP through which the blown air flows.

[0025] Guide surface portion 45 is formed by the front surface of case main body portion 43 and the front surface of cover portion 44. Hereinafter, the portion of guide surface portion 45 formed by case main body portion 43 may be referred to as main body-side guide surface portion 43a, and the portion formed by cover portion 44 may be referred to as cover-side guide surface portion 44a. When referring to guide surface portion 45, it includes both main body-side guide surface portion 43a and cover-side guide surface portion 44a.

[0026] The case body 43 is formed with a transmission part housing part 43b in which a part of the cleaning mechanism 50 is housed.

[0027] 4 and 5. The transmission unit storage portion 43b is a portion that protrudes rearward in a substantially U-shape at the lower portion of the case main body portion 43, and is formed along the longitudinal direction of the case main body portion 43. The front of the transmission unit storage portion 43b is covered by the cover portion 44.

[0028] The cover portion 44 is formed with a rib 44b that protrudes from the rear surface of the cover side guide surface portion 44a toward the transmission portion storage portion 43b and reinforces the cover portion 44.

[0029] A gap Sp, which is a predetermined gap, is formed between the case body 43 and the cover 44. The gap Sp is formed with approximately the same width along the longitudinal direction of the case.

[0030] The cleaning mechanism 50 has a drive unit 60 and a wiping unit 70 that is driven by the drive unit 60 to be movable along the guide surface unit 45 and can wipe off dust adhering to the guide surface unit 45 .

[0031] Please refer to Fig. 6. The drive unit 60 has a motor 61 that is provided at the right end of the case 40 and operates when electricity is applied, and a drive force transmission unit 62 that is connected to the motor 61 and transmits the drive force of the motor 61 to the wiping unit 70. The motor 61 may be provided at the left end.

[0032] The driving force transmission unit 62 is stored in the transmission unit storage unit 43b. The driving force transmission unit 62 has a gear unit 62a composed of a plurality of gears and capable of transmitting the driving force of the motor 61, a driving pulley 62b that is integrally provided with the gear unit 62a and rotates together with the gear unit 62a when the gear unit 62a rotates, and a support transmission unit 62c that is displaced when the driving pulley 62b rotates and supports the wiping unit 70.

[0033] Further, the driving force transmission portion 62 has a driven pulley provided at the end portion of the case body portion 43 opposite to the end portion where the driving pulley 62b is provided.

[0034] A toothed rope (synchro mesh rope) can be used for the support transmission part 62c. The support transmission part 62c is looped around a drive pulley 62b and a driven pulley provided at both left and right ends of the case main body part 43. It can also be said that both ends of the rope-like support transmission part 62c are connected to the wiping part 70 to form a loop.

[0035] 4. Wiping unit 70 has: driven unit 71 connected to support transmission unit 62c and moved left and right when drive unit 60 is activated; a first guide roller 72 rotatably supported by driven unit 71 and capable of contacting transmission unit housing unit 43b at its upper surface; a second guide roller 73 rotatably supported by driven unit 71 and having a side surface in contact with rib 44b; a main body 74 formed integrally with the tip of driven unit 71 and shaped to conform to guide surface unit 45; a sheet 75 provided on main body 74 and in contact with guide surface unit 45; and a brush unit 76 extending from main body 74 toward cross-flow fan 33 and capable of contacting cross-flow fan 33 at its tip.

[0036] Please refer to Figures 4, 5, and 6. Brush portion 76 has brush mounting surface 76a on which brushes for cleaning cross-flow fan 33 are mounted. Brush mounting surface 76a is located at the upper end of a support rod extending from main body portion 74 to cross-flow fan 33, and is formed so as to fit along cross-flow fan 33.

[0037] Brush mounting surface 76a is composed of first surface 76a1 and second surface 76a2 which are inclined at different angles with respect to straight line L extending outward from the axial center of cross-flow fan 33. An inner circumference cleaning brush 77 whose tip comes into contact with fan blades 33a located further inward than the outer edge 33b of the cross-flow fan 33, and an outer edge cleaning brush 78 whose tip comes into contact with fan blades 33a located on the outer edge 33b of the cross-flow fan 33, are respectively provided on the first surface 76a1 and the second surface 76a2. Furthermore, the tip of outer edge cleaning brush 78 mounted on first surface 76a1 and the tip of outer edge cleaning brush 78 mounted on second surface 76a2 overlap near outer edge 33b of cross-flow fan 33. This will be described in more detail below.

[0038] Inner circumference cleaning brush 77 and outer edge cleaning brush 78 are uniformly aligned in the direction along axis C of cross-flow fan 33 (left-right direction) on first surface 76a1 and second surface 76a2.

[0039] Both ends of a wire-shaped support transmission part 62c are connected to the driven part 71. This connects the wiping part 70 and the drive part 60. The tip of the driven part 71 passes through the gap Sp and faces the air passage AP.

[0040] The wiping unit 70 and the drive unit 60 may be connected to each other by a magnet with the guide surface unit 45 sandwiched therebetween.

[0041] The lower surface of the first guide roller 72 may be in contact with the transmission unit housing portion 43b. The right side surface of the second guide roller 73 may be in contact with the transmission unit housing portion 43b. When the rib 44b is formed at a position where it can come into contact with the second guide roller 73, the rib 44b for reinforcing the cover portion 44 can guide the second guide roller 73.

[0042] The sheet 75 can be made of nonwoven fabric, sponge, etc. The sheet 75 is provided on the main body 74 in a detachable manner.

[0043] The brush portion 76 is provided so as to be swingable in the front-rear direction relative to the main body portion 74 .

[0044] Next, cleaning of guide surface portion 45 and cross-flow fan 33 by cleaning mechanism 50 will be described.

[0045] Please refer to Fig. 6. For example, the air conditioner 10 starts cleaning after receiving an operation stop signal or a cleaning instruction signal by an operator. First, when the motor 61 operates, the gear part 62a and the drive pulley 62b rotate. When the drive pulley 62b rotates, the wiping part 70 provided on the support transmission part 62c moves in the left-right direction.

[0046] Please refer to Figures 4 and 5. Sheet 75 abuts against guide surface 45, and brush portion 76 abuts against cross-flow fan 33. When wiping portion 70 moves along gap Sp in this state, dust adhering to guide surface 45 is wiped away by sheet 75, and dust adhering to cross-flow fan 33 is also removed by brush portion 76. By keeping cross-flow fan 33 rotating at this time, all of the fan blades 33a can be cleaned.

[0047] Please refer to Figures 4 and 7. The outer edge cleaning brushes 78 are installed in a row in the left-right direction at a predetermined position near the connection between the first surface 76a1 and the second surface 76a2 that constitute the brush installation surface 76a. As a result, the tip of the outer edge cleaning brush 78 installed on the first surface 76a1 overlaps with the tip of the outer edge cleaning brush 78 installed on the second surface 76a2.

[0048] Please refer to Figures 4 and 7. As brush portion 76 moves towards the left-hand turn-back portion while cross-flow fan 33 is rotating, the overlapping portions of outer edge cleaning brushes 78 mounted on first surface 76a1 and second surface 76a2 come into contact with outer edge 33b of cross-flow fan 33. The portions where the tips of outer edge cleaning brushes 78 overlap have a higher brush density and are relatively stronger than the portions where the tips do not overlap.

[0049] As a result, when outer edge cleaning brush 78 comes into contact with outer edge 33b during cleaning of cross-flow fan 33, the brush is less likely to break and can maintain strong contact with outer edge 33b than when outer edge cleaning brush 78 with non-overlapping brush tips comes into contact. In other words, outer edge cleaning brush 78 with overlapping brush tips comes into contact with outer edge 33b of cross-flow fan 33 to effectively remove dust adhered to outer edge 33b, so that dust adhered to outer edge 33b of cross-flow fan 33 can be removed without taking cost-increasing measures such as using a brush made of stiffer bristles, and the cleanliness of cross-flow fan 33 is improved.

[0050] In addition, for each of first surface 76a1 and second surface 76a2 which are at different angles to straight line L extending outward from the axial center of cross-flow fan 33, an outer edge cleaning brush 78 is provided at a predetermined position close to the connection portion between first surface 76a1 and second surface 76a2, and an inner circumference cleaning brush 77 is provided at a predetermined position away from the connection portion between first surface 76a1 and second surface 76a2.Therefore, when cleaning cross-flow fan 33, it is possible to clean the inner sides of fan blades 33a as well as outer edge 33b.

[0051] Brush mounting surface 76a is formed so that first surface 76a1 and second surface 76a2 are roughly V-shaped in side view along cross-flow fan 33, and therefore outer edge cleaning brushes 78 are respectively provided at connection portions close to one end of first surface 76a1 and the other end of second surface 76a2, and inner circumference cleaning brushes 77 are respectively provided at positions away from each end. In this way, when cleaning cross-flow fan 33, each brush comes into contact with the inner circumference and outer edge 33b of fan blades 33a without changing the length of the brushes, and dust adhering to each portion can be removed, thereby avoiding the increase in costs that would be incurred by changing the length of each brush and improving the cleanliness of cross-flow fan 33.

[0052] Furthermore, by providing both sheet 75 and brush portion 76 on main body portion 74, sheet 75 and brush portion 76 are disposed in close proximity to each other. Therefore, dust can be dropped from cross-flow fan 33 onto guide surface portion 45 by brush portion 76, and then wiped away by sheet 75.

[0053] Furthermore, since the left and right louvers 37 (see Figure 3) are installed on the downstream side of the air flow of the cleaning mechanism 50, it is difficult to reach into the air passage AP between the cross-flow fan 33 and the guide surface portion 45 to clean it. Therefore, by providing the cleaning mechanism 50 that can move along the guide surface portion 45, dust adhering to the guide surface portion 45 can be easily removed.

[0054] In this embodiment, the inner periphery cleaning brush 77 and the outer edge cleaning brush 78 are provided on the first surface 76a1 and the second surface 76a2 of the brush mounting surface 76a, respectively, but the present invention is not limited to this. For example, only the outer edge cleaning brush 78 may be provided at different positions on the brush mounting surface 76a formed along the cross-flow fan 33. By providing the outer edge cleaning brushes 78 at different positions on the brush mounting surface 76a, the brush tips come into contact with the outer edge 33b when cleaning the cross-flow fan 33. As a result, the high-density brush comes into contact with the outer edge 33b of the cross-flow fan 33, effectively removing dust adhering to the outer edge 33b, and improving the cleanliness of the cross-flow fan 33.

[0055] In addition, in the present embodiment, the brush mounting surface 76a is formed to be approximately L-shaped in side view, but this is not limited thereto. For example, the brush mounting surface 76a may be formed in an arch shape along the cross-flow fan 33. In the arch-shaped brush mounting surface 76a, the outer edge cleaning brush 78 is installed at different installation positions near the center so that the tips of the brushes overlap, and the inner circumference cleaning brush 77 is installed on the end side away from the center. In this way, when cleaning the cross-flow fan 33, the outer edge cleaning brush 78, whose tips overlap, contacts the outer edge 33b, and the inner circumference cleaning brush 77 contacts the inner circumference side of the fan blade 33a. The outer edge cleaning brush 78, which has a higher density and is less likely to break, contacts the outer edge 33b of the cross-flow fan 33, so that dust attached to the outer edge 33b can be effectively removed. In addition, dust adhering to the inner periphery of the fan blades 33a is removed by contact with the inner periphery cleaning brush 77, so that the inner periphery and the outer edge 33b of the cross-flow fan 33 can be cleaned simultaneously, improving the cleanliness of the cross-flow fan 33.

[0056] Next, the effects of the air conditioner 10 will be described.

[0057] The brush section 76 has an outer edge cleaning brush 78 whose tip contacts the outer edge 33b of the cross-flow fan 33, and a brush mounting surface 76a whose shape conforms to the cross-flow fan 33. The outer edge cleaning brush 78 is mounted at different positions on the brush mounting surface 76a, so that the tips of the outer edge cleaning brush 78 overlap. Dust is likely to adhere to the outer edge 33b of the cross-flow fan 33, and light contact of the brush is likely to result in insufficient dust removal. When cleaning the cross-flow fan 33, the tips of the brushes overlap, so that the dense outer edge cleaning brush 78 strongly contacts the outer edge 33b of the cross-flow fan 33. The tip of the outer edge cleaning brush 78 continues to contact the outer edge 33b without breaking, so dust attached to the outer edge 33b of the cross-flow fan 33 can be sufficiently removed, improving the cleanliness of the cross-flow fan 33.

[0058] Brush section 76 has inner periphery cleaning brush 77 in contact with the inner periphery of cross-flow fan 33, and brush installation surface 76a is composed of first surface 76a1 and second surface 76a2 having different inclination angles with respect to straight line L extending outward from the axial center of cross-flow fan 33, one end of first surface 76a1 is connected to the other end of second surface 76a2, and outer edge cleaning brush 78 and inner edge cleaning brush 77 are installed on first surface 76a1 and second surface 76a2, respectively, such that outer edge cleaning brush 78 is closer to the connection between first surface 76a1 and second surface 76a2 than inner edge cleaning brush 77. When cross-flow fan 33 is cleaned, the inner periphery of fan blades 33a can be cleaned at the same time as outer edge 33b, improving the cleanliness of cross-flow fan 33.

[0059] Furthermore, in addition to sheet 75, main body 74 is provided with brush portion 76 for cleaning cross-flow fan 33. By providing both sheet 75 and brush portion 76 on main body 74, sheet 75 and brush portion 76 are disposed in close proximity to each other. Therefore, brush portion 76 drops dust from cross-flow fan 33 onto guide surface 45, and sheet 75 can wipe it away.

[0060] Please refer to FIG. 5 and FIG. 6. The cleaning mechanism 50 further includes a drive unit 60 for driving the main body unit 74. The drive unit 60 includes a motor 61 that is activated by energization, and a drive force transmission unit 62 that is connected to the motor 61 and transmits the drive force of the motor 61 to the main body unit 74. The drive force transmission unit 62 (support transmission unit 62c) extends substantially parallel to the axis C of the cross-flow fan 33. Normally, the air conditioner 10 is long in the direction along the axis C of the cross-flow fan 33 (left-right direction). By extending the drive force transmission unit 62 substantially parallel to the axis C, cleaning can be performed while moving the wiping unit 70 in the longitudinal direction. When the wiping unit 70 is moved in the width direction (up-down direction), it is necessary to provide the wiping unit 70 along the longitudinal direction. Therefore, the wiping unit 70 can be made smaller in size than when the wiping unit 70 is moved in the width direction.

[0061] Furthermore, because the sheet 75 and the brush portion 76 are provided on the main body portion 74, cleaning can be performed by moving the single main body portion 74. Because there is only one main body portion 74, only one drive portion 60 is required. There is no need to provide separate drive portions for driving the sheet 75 and the brush portion 76. This simplifies the configuration of the air conditioner 10 and reduces component costs.

[0062] The configuration of the cleaning mechanism 50 described in this embodiment is merely an example, and is not limited thereto. For example, the driving force transmission part 62 of the driving part 60 includes a worm provided across the left and right sides of the transmission part storage part 43b. In addition, the driven part 71 that is driven in the left and right direction by the operation of the driving part 60 includes a rack gear that meshes with the worm.

[0063] With the above configuration, when motor 61 (see FIG. 6) is operated, the worm provided across the width of case 40 rotates. Since driven part 71 has a rack gear that meshes with the worm, it moves left and right as the worm rotates. This causes main body part 74, sheet 75, and brush part 76 to also move left and right, making it possible to wipe away dust adhering to guide surface part 45 and cross-flow fan 33.

[0064] The air conditioner 10 configured in this manner also achieves the predetermined effects described above.

[0065] Also, in each embodiment, the cleaning mechanism 50 is described as being equipped with the sheet 75 for wiping the guide surface 45 and the brush portion 76 for cleaning the cross-flow fan 33, and the cleaning mechanism 50 is driven by the drive portion 60 in a direction along the axis C of the cross-flow fan 33, but the cleaning mechanism 50 may be equipped with only the brush portion 76 and specialized for cleaning the cross-flow fan 33. In other words, the sheet 75 for wiping the guide surface 45 is not an essential component of the present invention.

[0066] In addition, the air conditioner according to the present invention has been described as having both a cooling function and a heating function, but the present invention can also be applied to an air conditioner having only a cooling function or only a heating function. Furthermore, the present invention can be applied not only to an air conditioner consisting of an outdoor unit and an indoor unit, but also to an air conditioner in which these are integrated. [Explanation of symbols]

[0067] 10...Air conditioner 33...cross-flow fan 33b...Outer edge 40…Case 41…Air intake 42...Air outlet 45...Guide surface 50...Cleaning mechanism 60…Drive unit 61...Motor 62...Drive force transmission section 74…Main body 75…sheets 76…Brush section 76a…Brush installation surface 76a1…First side 76a2…Second side 77…Inner circumference cleaning brush 78…Edge cleaning brush

Claims

1. A case having an air intake port capable of taking in air from the outside and an air outlet port capable of blowing the taken-in air to the outside; a cross-flow fan that is rotatably supported by the case and rotates to blow air, a cleaning mechanism is installed in the case, the cleaning mechanism having a brush portion extending from a main body portion to the cross-flow fan and capable of cleaning the cross-flow fan; the brush portion includes an outer edge cleaning brush having a tip that contacts an outer edge of the cross-flow fan, and a brush installation surface that is shaped to fit along the cross-flow fan, The air conditioning device is characterized in that the outer edge cleaning brushes are installed at different positions on the brush installation surface, so that tips of the outer edge cleaning brushes overlap.

2. the brush portion includes an inner circumferential side cleaning brush that contacts an inner circumferential side of the cross-flow fan, the brush installation surface is composed of a first surface and a second surface having different inclination angles with respect to a straight line extending outward from an axial center of the cross-flow fan, and one end of the first surface is connected to an end of the other end of the second surface, 2. The air conditioning device according to claim 1, characterized in that the outer edge cleaning brush and the inner circumference cleaning brush are installed on the first surface and the second surface, respectively, so that the outer edge cleaning brush is closer to the connection portion between the first surface and the second surface than the inner circumference cleaning brush.

3. a guide surface portion that guides air blown by the cross-flow fan toward the air outlet is formed on the case along an axis of the cross-flow fan, The cleaning mechanism is installed on the guide surface portion, 3. The air conditioning device according to claim 1 or 2, characterized in that the cleaning mechanism comprises: a main body portion movable along the guide surface portion; and a sheet detachably attached to the main body portion and capable of wiping off dust adhering to the guide surface portion.

4. The cleaning mechanism further includes a drive unit for driving the main body unit, the drive unit includes a motor that is activated by energization, and a drive force transmission unit that is connected to the motor and transmits the drive force of the motor to the main body unit; 4. The air conditioner according to claim 3, wherein the drive force transmission portion extends substantially parallel to an axis of the cross-flow fan.

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