Air conditioner

Abstract

To provide an air conditioner with a cover covering a motor arranged at a corner of a draft air duct, and difficult to accumulate dust.SOLUTION: An air conditioner 10 comprises: a draft air duct 36 formed between an outer peripheral wall 40 surrounding a fan 21 and the fan 21 and flowing air blown by the fan 21; wipe-off members 66, 67 capable of wiping dust adhered inside a case 30 by moving in an axial direction of the fan 21; a motor 55 serving as a drive source for moving the wipe-off members 66, 67; and a cover 70 covering the motor 55. The motor 55 and the cover 70 are positioned at a corner 36a of the draft air duct 36 in the axial direction of the fan 21 as a reference. The cover 70 has a guide face 71 capable of guiding air flowing between the cover 70 and the fan 21 to a center 32C of an air port 32.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an air conditioner having a function of wiping off dust inside a case. [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] The air conditioner disclosed in Patent Document 1 includes a fan that rotates to blow air into a room, and a case that houses the fan. The air conditioner also includes a wiping mechanism that wipes away dust from inside the case that houses the fan.

[0004] Specifically, the wiping mechanism has a brush that is provided so as to be able to come into contact with the fan for cleaning the fan. By rotating the fan with the brush in contact with the fan, dust adhering to the fan can be removed. [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] As a wiping mechanism that uses a brush to clean the fan as in the prior art, for example, a brush with a width smaller than the width of the fan can be used and moved back and forth along the axial direction of the fan while keeping the brush in contact with the fan.

[0007] Furthermore, when a motor is used as a drive source for moving the brush, the motor occupies a certain amount of space, and therefore, for design reasons, it may be necessary to place the motor in the air passage for the air blown by the fan.

[0008] To avoid impeding the air flowing through the air duct, it is conceivable to place the motor in a corner of the air duct together with a cover that covers the motor. However, since air does not flow easily through the corners of the air duct, dust is likely to accumulate on the cover. There is room for improvement in the shape of the cover.

[0009] An object of the present invention is to provide an air conditioner that covers a motor disposed in a corner of an air passage and is provided with a cover that prevents dust from accumulating. [Means for solving the problem]

[0010] In 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 fan that is housed in the case and rotates to blow air; an outer circumferential wall surface formed on the case so as to surround a part of an outer periphery of the fan; an air passage formed between the outer peripheral wall surface and the fan, through which air blown by the fan flows; a wiping member that can wipe off dust adhering to an inside of the case by moving in an axial direction of the fan; A motor serving as a drive source for moving the wiping member; a cover for covering the motor, the motor and the cover are located at a corner of the air passage with respect to an axial direction of the fan; An air conditioner is provided, wherein the cover has a guide surface capable of guiding air flowing between the cover and the fan to a center of the air outlet. Effect of the Invention

[0011] The present invention can provide an air conditioner that covers a motor located in a corner of an air passage and is equipped with a cover that prevents dust from accumulating. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a schematic diagram of an air conditioner according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view of an indoor unit of the air conditioner shown in FIG. [Diagram 3] FIG. 3 is a diagram illustrating the case of the indoor unit shown in FIG. 2 and a fan housed in the case. [Figure 4] 4 is a perspective view of a motor located in a corner of the air passage and a cover that covers the motor. FIG. [Diagram 5] 4 is a cross-sectional view of the wiping mechanism as viewed in a direction along the axial direction of the fan. FIG. [Figure 6] Fig. 6A is a diagram illustrating the cover as viewed from the axial direction of the fan, and Fig. 6B is a diagram illustrating the cover as viewed from the front to the rear. [Figure 7] Fig. 7A is a diagram illustrating the receiving surface and the second guide surface as viewed in the direction of air flow along the outer peripheral wall surface, and Fig. 7B is a diagram illustrating the cover, the receiving surface, and the second guide surface as viewed obliquely from below. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] <Example> The embodiment will be described with reference to the attached drawings. The same reference numerals are used for parts and portions that perform the same function, and duplicated explanations will be omitted or simplified as appropriate. In the drawings, Fr indicates front, Rr indicates rear, Le indicates left as seen by the occupant, Ri indicates right as seen by the occupant, Up indicates up, and Dn indicates down. Furthermore, Us indicates upstream, and Ds indicates downstream.

[0014] In the following description, when the air conditioner 10 is viewed from the front, the side away from the air conditioner 10 is referred to as the front, and the side approaching the air conditioner 10 is referred to as the rear. Left, right, top, and bottom refer to the left, right, top, and bottom, respectively, when the air conditioner 10 is viewed from the front. Additionally, the upstream side and downstream side refer to the flow direction of air flowing along the outer peripheral wall surface 40, which will be described later.

[0015] An air conditioner 10 according to the embodiment is shown in Fig. 1. The air conditioner 10 has a cooling function for cooling the indoor space In and a heating function for heating the indoor space In.

[0016] The air conditioner 10 includes an outdoor unit 11 provided outdoors Ou and an indoor unit 20 provided indoors In. The outdoor unit 11 and the indoor unit 20 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.

[0017] The outdoor unit 11 is equipped with a four-way switching valve 12 that switches the direction in which the refrigerant circulates during cooling operation and heating operation, a compressor 13 through which the refrigerant that has passed through this four-way switching valve 12 flows and compresses the refrigerant, an outdoor heat exchanger 14 through which the refrigerant that has been compressed in the compressor 13 and has become high temperature and high pressure flows, an outdoor fan 15 that blows air towards the outdoor heat exchanger 14, and an expansion valve 16 that reduces the pressure of the refrigerant that has passed through the outdoor heat exchanger 14.

[0018] The indoor unit 20 is used by hanging it on a wall Wa inside the room In. A case 30 of the indoor unit 20 is fixed to the wall Wa via a support plate. The case 30, whose longitudinal direction is the left-right direction, houses a fan 21 that takes in air from the room In into the case 30 and blows it out to the room In, and a heat exchanger 27 that exchanges heat with the air taken in by the fan 21.

[0019] During cooling operation, the refrigerant that has been made high temperature and high pressure by the compressor 13 exchanges heat with outside air in the outdoor heat exchanger 14, releasing heat. At this time, the outdoor fan 15 operates to forcibly flow outside air around the outdoor heat exchanger 14, promoting heat exchange. The refrigerant that has passed through the outdoor heat exchanger 14 and released heat is reduced in pressure by the expansion valve 16, and its temperature drops. The cooled refrigerant is sent to the indoor unit 20.

[0020] Air is introduced into the case 30 of the indoor unit 20 by operating the fan 21. The introduced air passes around the outer periphery of the heat exchanger 27 and is sent to the indoor space In. The heat exchanger 27 is supplied with refrigerant that has been cooled in the outdoor unit 11. The air passing around the outer periphery of the heat exchanger 27 exchanges heat with the refrigerant and is cooled. The cooled air is sent to the indoor space In.

[0021] During heating operation, the four-way switching valve 12 switches the flow path of the refrigerant, circulating the refrigerant in the opposite direction to that during cooling operation.

[0022] Please refer to Figures 1 and 2. An air intake port 31 capable of taking in air from the outside (indoors In) is opened on the top surface of the case 30. An air outlet 32 ​​capable of blowing air out to the outside (indoors In) is opened on the front lower part of the case 30. The air outlet 32 ​​is provided with up-down louvers 28 that can open and close the air outlet 32 ​​and adjust the direction in which the air is blown out in the vertical direction (height direction of the air conditioner 10).

[0023] Please refer to Fig. 3. Behind the up-down louvers 28 (see Fig. 2), left-right louvers 29 are provided which are capable of adjusting the direction in which air is blown out left-right (the width direction of the air conditioner 10).

[0024] (Outer wall) The case 30 has a fan storage section 33 that stores the fan 21. The fan storage section 33 has an outer peripheral wall surface 40 that can surround a part of the outer periphery of the fan 21 so as to guide the air blown by the fan 21 toward the air outlet 32, and two side surfaces 34, 35 located adjacent to the end surfaces 22, 23 on both sides in the direction of the axis C of the fan 21.

[0025] (Ventilation duct 36) The outer peripheral wall surface 40 is formed along the direction in which the axis C of the fan 21 extends. The space between the outer peripheral wall surface 40 of the case 30 and the fan 21 is an air passage 36 (see FIG. 5) through which air blown by the fan flows.

[0026] (wiping mechanism 50) Please refer to Figures 4 and 5. The case 30 is equipped with a wiping mechanism 50 capable of wiping off dust adhering to the inside of the case 30 (the fan 21 and the outer peripheral wall surface 40). The wiping mechanism 50 is equipped with a moving member 60 that is movable inside the case 30, a reciprocating mechanism 51 that is capable of reciprocating the moving member 60 along the direction of the axis C of the fan 21, and a drive unit 54 that is capable of driving the reciprocating mechanism 51.

[0027] (Reciprocating mechanism 51) The reciprocating mechanism 51 includes, for example, a drive pulley 52 rotatable by a drive source, a driven pulley (not shown) provided on the opposite side of the drive pulley 52 (based on the direction of the axis C of the fan 21), and a toothed rope 53 (synchro mesh rope) that is looped around the drive pulley 52 and the driven pulley and has a moving member 60 fixed thereto.

[0028] (Drive unit 54) The drive unit 54 is located at a corner 36a of the air passage 36 (the right end of the air passage 36, immediately adjacent to the right wall surface 34). The drive unit 54 includes an electric motor 55 serving as a drive source, and a gear 59 rotated by the electric motor 55. The gear 59 can mesh with a gear portion 52a formed on the outer circumferential surface on the front side of the drive pulley 52.

[0029] (Reciprocating mechanism storage section 41) Please refer to Figures 4 and 5. A reciprocating mechanism housing section 41 is formed in the outer peripheral wall surface 40. The reciprocating mechanism housing section 41 is recessed so as to open toward the fan 21 and houses the reciprocating mechanism 51. The reciprocating mechanism housing section 41 is formed from the right end to the left end of the outer peripheral wall surface 40 along the direction of the axis C of the fan 21.

[0030] With the air flow direction of the air passage 36 as a reference, the surface of the outer peripheral wall 40 that is upstream (Us (see Figure 4)) of the reciprocating mechanism storage section 41 is designated as the upstream outer peripheral wall surface 43, and the surface that is downstream (Ds (see Figure 4)) of the reciprocating mechanism storage section 41 is designated as the downstream outer peripheral wall surface 44.

[0031] The reciprocating mechanism housing section 41 is covered by a lid 42. A surface 42a of the lid 42 smoothly connects the upstream outer peripheral wall surface 43 and the downstream outer peripheral wall surface 44 (they are continuous without protruding or recessing from the outer peripheral wall surface 40). In other words, the surface 42a of the lid 42, together with the upstream outer peripheral wall surface 43 and the downstream outer peripheral wall surface 44, constitutes a part of the outer peripheral wall surface 40. A back surface 42b of the lid 42 has a rib 42c that protrudes toward the reciprocating mechanism housing section 41 and reinforces the lid 42.

[0032] A gap G is defined between the upstream outer peripheral wall surface 43 and the surface 42a of the lid 42. The gap G is formed in the direction of the axis C of the fan 21 with a substantially uniform width.

[0033] (moving member 60) Referring to Fig. 5, moving member 60 is integrally constructed of a driven part 61 that is fixed to toothed rope 53 and moves in the direction of axis C of fan 21 when drive part 54 is operated, an arm part 62 that extends from driven part 61 through gap G to air passage 36, and a base part 63 that is supported by arm part 62.

[0034] In other words, of the movable member 60, the driven portion 61 is a portion stored in the reciprocating mechanism storage portion 41, the base portion 63 is a portion located in the air passage 36, and the arm portion 62 is a portion that connects the driven portion 61 and the base portion 63.

[0035] (Guide rollers 64, 65) The driven portion 61 includes a first guide roller 64 capable of rolling on the upper or lower surface of the reciprocating mechanism housing portion 41 and a second guide roller 65 capable of rolling on the rib 42c or the reciprocating mechanism housing portion 41.

[0036] (base 63) The base 63 is formed in a curved, frame-like shape along the outer peripheral wall surface 40. The base 63 includes a sheet 66 (wiping member) capable of contacting the outer peripheral wall surface 40 and wiping off dust adhering to the outer peripheral wall surface 40, and a brush 67 (wiping member) capable of contacting the outer peripheral edge 24 (see FIG. 5) of the fan 21 and wiping off dust adhering to the outer peripheral edge 24. Note that it is sufficient for the base 63 to include at least either the sheet 66 or the brush 67.

[0037] (Arrangement of electric motor 55, gear portion 52a, and drive pulley 52) Please refer to Figures 4, 6A, and 6B. The axis of the drive pulley 52 is oriented in the front-rear direction. The gear 59 is located below the gear portion 52a of the drive pulley 52. ​​The electric motor 55 is located in front of the gear 59. In other words, the drive pulley 52 and the electric motor 55 are located in a stepped shape. The center line 55C of the housing 56 of the electric motor 55 is oriented in the front-rear direction.

[0038] (Cover 70) The electric motor 55, gear 59, and drive pulley 52 (hereinafter referred to as electric motor 55, etc.) are located at the right corner 36a of the air passage 36, and are covered by a cover 70. Note that, for example, in the case where the gear 59 and drive pulley 52 can be located behind the outer peripheral wall surface 40 and only the electric motor 55 is located in the air passage 36, the cover 70 may cover only the electric motor 55.

[0039] The cover 70 has a guide surface 71 capable of guiding the air flowing between the cover 70 and the fan 21 to the center 32C (see FIG. 2) of the air outlet 32. As long as the cover 70 has a guide surface 71 with such a function, the shape of the cover 70 can be changed as appropriate. An example of the cover 70 will be described below.

[0040] The guide surface 71 has a triangular shape defined by a first edge 81 to a third edge 83. The guide surface 71 has a first edge 81 extending from the upstream side to the downstream side along the outer peripheral wall surface 40, a second edge 82 extending from an upstream end 81a of the first edge 81 toward the center 32C side of the air outlet 32 ​​(in the direction away from the side wall 34), and a third edge 83 extending from a downstream end 81b of the first edge 81 toward the center 32C side of the air outlet 32 ​​(in the direction away from the side wall 34). A tip 82a of the second edge 82 and a tip 83a of the third edge 83 are continuous (are at substantially the same position).

[0041] The second edge 82 approaches the outer peripheral wall surface 40 and faces the downstream side as it moves toward the center 32C of the air outlet 32. The third edge 83 approaches the outer peripheral wall surface 40 and faces the upstream side as it moves toward the center 32C of the air outlet 32.

[0042] (1st plane 72) The cover 70 has a rectangular first plane 72 located on the right side (the side closer to the side wall 34) of the guide surface 71 and having a first edge 81 as one side. The first plane 72 has a fourth edge 84 extending from an upstream end 81a of the first edge 81 to the side wall 34, a fifth edge 85 extending from a downstream end 81b of the first edge 81 to the side wall 34, and a sixth edge 86 connecting a tip 84a of the fourth edge 84 and a tip 85a of the fifth edge 85. The fourth edge 84 and the fifth edge 85 are aligned along the axis C direction of the fan 21. The sixth edge 86 is in contact with the side surface 34. The first plane 72 is aligned along the outer peripheral wall surface 40 (is substantially parallel to the outer peripheral wall surface 40 and faces substantially the same direction as the outer peripheral wall surface 40).

[0043] (2nd plane 73) Furthermore, the cover 70 has a second plane 73 including a second edge 82 and a fourth edge 84 on the upstream side of the guide surface 71 and the first plane 72. The second plane 73 has a seventh edge 87 extending upstream from a tip 82a of the second edge 82, an eighth edge 88 extending upstream from a tip 84a of the fourth edge 84, and a ninth edge 89 connecting a tip 87a of the seventh edge 87 and a tip 88a of the eighth edge 88. The eighth edge 88 is in contact with the side surface 34. The ninth edge 89 is along the direction of the axis C of the fan 21. The second plane 73 is along the outer peripheral wall surface 40 (is substantially parallel to the outer peripheral wall surface 40 and faces substantially the same direction as the outer peripheral wall surface 40).

[0044] (Side cover surface 74) The cover 70 has a side cover surface 74 that extends from the seventh edge 87 to the outer peripheral wall surface 40 and covers the electric motor 55 and other components from the side. The side cover surface 74 faces the axial direction (left side) of the fan 21. An entrance is formed in the side surface 34 for storing the base 63 inside the cover 70. The right side of the cover 70 is open, and the side surface 34 covers the electric motor 55 and other components from the right side.

[0045] (Front cover surface 75) The cover 70 has a front cover surface 75 that extends from the third edge 83 and the fifth edge 85 to the outer peripheral wall surface 40 and covers the electric motor 55 and the like from the front. The front cover surface 75 is aligned along the front edge 34a of the side surface 34 and is bent rearward.

[0046] (Upper cover surface 76) The cover 70 extends rearward from the ninth edge 89 and has an upper cover surface 76 that covers the electric motor 55 and the like from above.

[0047] The cover 70 is fixed to the outer peripheral wall surface 40 by screws 78. The screws 78 penetrate the front cover surface 75 and fasten to female threads formed in the outer peripheral wall surface 40. The electric motor 55 is fixed to the cover 70 by screws 79.

[0048] (Housing 56 of electric motor 55) The housing 56 of the electric motor 55 has a disk-shaped end surface 57 facing forward, and a cylindrical portion 58 extending rearward from the periphery of the end surface 57. Of the cylindrical portion 58, the portion located at the uppermost position is referred to as an uppermost portion 58a, the portion located at the lowermost position is referred to as a lowermost portion 58b, the portion closest to the side surface 34 is referred to as a proximal portion 58c, and the portion furthest from the side surface 34 is referred to as a distal portion 58d.

[0049] 6A. Looking at the cover 70 along the direction of the axis C of the fan 21, the end surface 57 of the housing 56 of the electric motor 55 overlaps the side cover surface 74 and the guide surface 71, and intersects with the third plane 73. The uppermost portion 58a of the housing 56 overlaps the side cover surface 74 and the guide surface 71, and intersects with the third plane 73. The lowermost portion 58b of the housing 56 overlaps the side cover surface 74. The gear portion 52a of the drive pulley 52 overlaps the side cover surface 74.

[0050] See Fig. 6B. Looking at the cover 70 from front to rear, the cylindrical portion 58 of the housing 56 overlaps the front cover surface 75, the guide surface 71, and the first plane 72. The uppermost portion 58a of the housing 56 is located in the first plane 72. The proximal portion 58c, the lowermost portion 58b, and the distal portion 58d of the housing 56 are located in the front cover surface 75. The drive pulley 52 overlaps the guide surface 71, the first plane 72, and the second plane 73.

[0051] The center line 55C of the housing 56 is located to the right of the widthwise center of the cover 70 (opposite the direction toward the center 32C of the air outlet 32). That is, the electric motor 55 is disposed biased toward the right side within the cover 70. The space on the left side of the cover 70 (in the direction toward the center 32C of the air outlet 32) is set wide, allowing for a high degree of freedom in the design of the guide surface 71 (for example, the angle of inclination of the guide surface 71).

[0052] (Receiving surface 91) Please refer to Figures 6A, 7A, and 7B. The air conditioner 10 is provided with a receiving member 90 having a receiving surface 91 located downstream of the cover 70 and receiving air that has passed between the cover 70 and the fan 21. The receiving surface 91 is an area surrounded by a line L1, and can be said to be a portion overlapping the cover 70 when viewed along the flow direction of the air flowing through the air passage 36 (see Figure 7A). The receiving member 90 is located below the receiving surface 91 and has an overlapping portion 95 that overlaps with a portion of the front cover surface 75 of the cover 70. The receiving member 90 is fixed to the front side of the case 30. The receiving member 90 can be said to be a part of the case 30, and may be formed integrally with the case 30.

[0053] (Second guide surface 92) Furthermore, the receiving member 90 has a second guide surface 92 that extends from a tip 91a of the receiving surface 91 (the end (left end) on the side of the center 32C of the air outlet 32) toward the center 32C of the air outlet 32 ​​and can guide the air received by the receiving surface 91 toward the center 32C of the air outlet 32. The second guide surface 92 is an area surrounded by line L2, and is a portion that does not overlap with the cover 70 when viewed along the flow direction of the air flowing through the air passage 36 (see FIG. 7A), and can also be said to be an extension of the receiving surface 91. The receiving surface 91 and the second guide surface 92 are located on the same plane.

[0054] The second guide surface 92 has an air outlet edge 93 which constitutes the air outlet 32 ​​together with the downstream edge 40a of the outer peripheral wall surface 40. A distance D between the air outlet edge 93 and the downstream edge 40a of the outer peripheral wall surface 40 becomes wider toward the center 32C of the air outlet 32.

[0055] (First effect) 2 to 5. First, the air conditioner 10 includes a case 30 having an air intake 31 capable of taking in air from the outside and an air outlet 32 ​​capable of blowing the taken-in air to the outside, a fan 21 housed in the case 30 and rotating to blow air, an outer circumferential wall surface 40 formed in the case 30 so as to surround a part of the outer periphery of the fan 21, an air passage 36 formed between the outer circumferential wall surface 40 and the fan 21 and through which the air blown by the fan 21 flows, a wiping member (sheet 66 or brush 67) capable of wiping off dust adhering to the inside of the case 30 by moving in the direction of the axis C of the fan 21, an electric motor 55 serving as a drive source for moving the wiping members 66, 67, and a cover 70 for covering the electric motor 55.

[0056] 4 and 7B. Electric motor 55 and cover 70 are located at right corner 36a of air passage 36 with respect to the direction of axis C of fan 21. Cover 70 has guide surface 71 capable of guiding air flowing between cover 70 and fan 21 to center 32C of air outlet 32.

[0057] Specifically, guide surface 71 is inclined so that the distance between guide surface 71 and fan 21 increases toward center 32C of air outlet 32. Compared to a cover 70 that does not have inclined guide surface 71, air flows more easily between cover 70 and fan 21, and air accumulation can be suppressed. An air conditioner in which dust is less likely to adhere to cover 70 can be provided.

[0058] (Second Effect) 7A and 7B. Secondly, in the first air conditioner 10, the case 30 has a receiving surface 91 located downstream of the cover 70 and receiving air that has passed between the cover 70 and the fan 21, and a second guide surface 92 extending from the receiving surface 91 to the center 32C of the air outlet 32 ​​and capable of guiding the air received by the receiving surface 91 toward the center 32C of the air outlet 32.

[0059] The second guide surface 92 has an outlet edge 93 which, together with the downstream edge 40a of the outer peripheral wall surface 40, constitutes the air outlet 32. A distance D between the outlet edge 93 and the outer peripheral wall surface 40 widens toward the center 32C of the air outlet 32. In addition to the guide surface 71, a receiving surface 91 and a second guide surface 92 are further provided. This configuration improves the air blowing performance near the corners 36a of the air passage 36, and further prevents air from accumulating, making it difficult for dust to adhere to the cover 70.

[0060] As long as the functions and effects of the present invention are achieved, the present invention is not limited to the embodiments. Furthermore, the elements constituting each embodiment can be appropriately combined. [Explanation of symbols]

[0061] 10...Air conditioner 21...Fan 30…Case 31...Air intake 32…Air outlet 36…Ventilation duct 36a… Corner of the air duct 40…Outer wall surface 40a... downstream edge of outer wall 55...Electric motor 66...Sheet (wiping member) 67...Brush (wiping member) 70…Cover 71...Guide surface 91…Receiving surface 92…Second guide surface 93…Outlet edge

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 fan that is housed in the case and rotates to blow air; an outer circumferential wall surface formed on the case so as to surround a part of an outer periphery of the fan; an air passage formed between the outer peripheral wall surface and the fan, through which air blown by the fan flows; a wiping member that can wipe off dust adhering to an inside of the case by moving in an axial direction of the fan; A motor serving as a drive source for moving the wiping member; a cover for covering the motor, the motor and the cover are located at a corner of the air passage with respect to an axial direction of the fan; The cover has a guide surface capable of guiding air flowing between the cover and the fan to a center of the air outlet.

2. The case is a receiving surface located downstream of the cover and receiving air that has passed between the cover and the fan; a second guide surface extending from the receiving surface to a center of the air outlet and capable of guiding the air received by the receiving surface toward the center of the air outlet, The second guide surface has an air outlet edge that constitutes the air outlet together with a downstream edge of the outer circumferential wall surface, The air conditioner according to claim 1 , wherein a distance between the edge of the air outlet and an edge of the outer peripheral wall surface on the downstream side becomes wider toward a center of the air outlet.

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