Air conditioner

Abstract

This air conditioner comprises: a box-shaped housing having an intake port, and a discharge port formed in the upper surface thereof; a fan which is provided inside the housing, draws in air from the intake port, and blows out air from the discharge port; a heat exchanger that is provided inside the housing and exchanges heat between air and a heat medium; a top surface cover that covers an upper part of the housing; and a duct connection member which is provided on the top surface cover and to which a discharge duct is connected. The top surface cover has an upper surface part that constitutes the upper surface, a first opening formed in the upper surface part and in communication with the discharge port, and a first upright wall part which is provided so as to surround the first opening and which protrudes upward. The duct connection member has a second opening in communication with the discharge port, a second upright wall part which is provided so as to surround the second opening and protrudes upward, and to which the discharge duct is secured by a securing member, and a flange part which is provided in a lower-end part of the second upright wall part and which extends outward. The second upright wall part is disposed so as to surround the first upright wall part of the top surface cover, and the flange part is secured to the upper surface part of the top surface cover by a securing member.

Description

air conditioner

[0001] The present disclosure relates to an air conditioner.

[0002] Conventionally, there is an air conditioner equipped with a fan that blows air that has undergone heat exchange in a heat exchanger into a space to be air-conditioned (see, for example, Patent Document 1). The indoor unit of the air conditioner in Patent Document 1 includes a fan, a heat exchanger, and a drain pan inside a housing. An air path is formed inside the housing, from an intake port formed in a front panel that forms the front surface of the housing to an outlet port formed in a top panel that forms the top surface of the housing. Air taken into the housing through the intake port on the front surface of the housing passes through the heat exchanger, is conditioned, and is then blown out through an outlet port on the top surface of the housing.

[0003] Recently, in order to secure space indoors, indoor units of air conditioners such as those described in Patent Document 1 are sometimes installed outdoors. In this case, an air outlet on the top surface of the housing is connected to an air outlet through an air outlet, which connects the indoor space to be air-conditioned with the outdoors, and conditioned air is supplied from the air outlet through the air duct into the room.

[0004] International Publication No. 2022 / 029891

[0005] The indoor unit of the air conditioner in Patent Document 1 is not structured to prevent rainwater from seeping in, and therefore, when installed outdoors, there is a concern that rainwater may seep into the interior of the housing through gaps in the upper part of the housing, etc. Furthermore, when the indoor unit of the air conditioner described above is connected to an outlet duct, it is necessary to caulk the connection between the outlet duct and the upper surface of the housing to prevent rainwater from seeping into the interior of the housing through the connection between the outlet duct and the upper surface of the housing, but during maintenance, it is necessary to caulk every time the outlet duct is attached or detached from the housing, which creates an issue of poor workability.

[0006] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an air conditioner that has improved waterproofing and improved workability during maintenance.

[0007] The air conditioner according to the present disclosure comprises a box-shaped housing having an air inlet and an air outlet formed on an upper surface thereof, a fan provided inside the housing to draw air through the air inlet and blow the air out through the air outlet, a heat exchanger provided inside the housing to exchange heat between the air and a heat medium, a top cover covering an upper portion of the housing, and a duct connecting member provided on the top cover to which an air outlet duct is connected, the top cover having an upper surface portion constituting an upper surface, and a first opening formed on the top surface portion and communicating with the air outlet. The duct connecting member has a mouth portion, and a first upright wall portion that is arranged to surround the first opening and protrudes upward, and the duct connecting member has a second opening that communicates with the air outlet, a second upright wall portion that is arranged to surround the second opening and protrudes upward, and to which the air outlet duct is fixed with a fixing member, and a flange portion that is arranged at the lower end of the second upright wall portion and extends outward, and the second upright wall portion is arranged to surround the first upright wall portion of the top cover, and the flange portion is fixed to the upper surface portion of the top cover with a fixing member.

[0008] According to the air conditioner according to the present disclosure, it is possible to improve the waterproofing properties and also improve the workability during maintenance.

[0009] 8 is an external perspective view of an air conditioner according to Embodiment 1, as seen from the front side. FIG. 9 is a longitudinal cross-sectional view of an air conditioner according to Embodiment 1, as seen from the side. FIG. 10 is an external perspective view showing an enlarged view of the upper part of the air conditioner according to Embodiment 1. FIG. 11 is an exploded perspective view of the top panel of the upper part of the air conditioner according to Embodiment 1. FIG. 12 is a perspective view illustrating a method of attaching a duct connecting member to the air conditioner according to Embodiment 1. FIG. 13 is a perspective view illustrating a method of attaching a duct to the air conditioner according to Embodiment 1. FIG. 14 is a schematic plan view of the air conditioner according to Embodiment 1. FIG. 15 is a view taken along the X-X cross section of FIG. 8, as seen in the direction of the arrows. FIG. 16 is a view taken along the Y-Y cross section of FIG. 8, as seen in the direction of the arrows. FIG. 17 is an exploded perspective view of a top cover according to Embodiment 2. FIG. 18 is a perspective view illustrating a watertight structure of the air conditioner according to Embodiment 2. FIG. 19 is a plan view of a rubber plate according to Embodiment 2. FIG. 19 is a perspective view illustrating a method of attaching a rubber plate to the air conditioner according to Embodiment 2.

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited to the embodiments described below. Furthermore, the size relationships between components in the drawings may differ from those in reality. Furthermore, in the following description, terms indicating directions, such as "up," "down," "right," "left," "front," and "rear," are used as appropriate to facilitate understanding, but these terms are for explanatory purposes and do not limit the embodiments. Furthermore, in the embodiments, terms such as "up," "down," "right," "left," "front," and "rear" are used when viewing the air conditioner 100 from the front.

[0011] Embodiment 1 Fig. 1 is an external perspective view of an air conditioner 100 according to Embodiment 1, as viewed from the front side. Fig. 2 is a vertical cross-sectional view of the air conditioner 100 according to Embodiment 1, as viewed from the side.

[0012] The air conditioner 100 according to embodiment 1 is connected to a heat source machine (not shown) installed outdoors or elsewhere via piping that circulates a heat medium, and circulates the heat medium that has been exhausted or absorbed by the heat source machine to provide air conditioning for the indoor space to be air-conditioned.

[0013] As shown in Figures 1 and 2, the air conditioner 100 includes a box-shaped housing 11 that forms the outer shell. The housing 11 includes a top panel 12 that forms the top surface, a front panel 13 that forms the front surface, a rear panel 14 that forms the rear surface, and a pair of side panels 15 that form the left and right sides. The front panel 13 and the rear panel 14 are detachably attached to the housing 11 and can be removed when performing maintenance on the internal components of the housing 11 (such as the fan 7 described below). The top panel 12 is formed with an outlet 12a that blows air (conditioned air) upward, and the rear panel 14 is formed with an inlet 14a that draws in air. Note that, although the front panel 13 is divided into two parts, upper and lower, in the first embodiment, this is not limiting.

[0014] The air conditioner 100 includes, inside the housing 11, a fan 7 that blows air, a motor (not shown) that drives the fan 7, a fan casing 1 that houses the fan 7, and a heat exchanger 30 that exchanges heat between the heat medium flowing in from the heat source machine and the air sucked in through the intake port 14a.

[0015] The air conditioner 100 is installed, for example, on the ground outdoors. A rectangular duct connecting member 41 provided around the air outlet 12a is connected to an outlet duct DC (see FIGS. 6 and 7 described below) that connects the indoor space, which is the space to be air-conditioned, with the outdoors. The air conditioner 100 also has a hood 20 fixed to the rear panel 14 of the housing 11 so as to cover the air inlet 14a. By driving the fan 7, the air conditioner 100 draws outdoor air through the air inlet 14a via the hood 20, passes the air through the heat exchanger 30, and exchanges heat with the heat medium inside the heat exchanger 30. The air conditioner 100 then supplies the air that has exchanged heat with the heat medium (conditioned air) from the air outlet 12a through the outlet duct DC to the indoor space, which is the space to be air-conditioned. In other words, the air conditioner 100 conditions outdoor air and supplies it to the indoor space, which is the space to be air-conditioned.

[0016] The fan 7 is, for example, a centrifugal sirocco fan with a plurality of blades 7a arranged in a cylindrical shape. That is, the fan 7 draws air into the interior from the side of the fan casing 1 and expels the drawn air to the outside by centrifugal force. Note that, although a double-inlet sirocco fan is used as the fan 7 in the first embodiment, the present invention is not limited to this and a single-inlet sirocco fan may also be used.

[0017] A fan casing 1 is provided around the fan 7. The fan casing 1 is fixed to a top panel 12, a front panel 13, and a rear panel 14 that constitute a housing 11.

[0018] The heat exchanger 30 is, for example, a fin-and-tube heat exchanger, and is arranged in a V-shape in side view inside the housing 11. This arrangement is intended to ensure an effective area and reduce the external dimensions of the housing 11, but it also serves as a partition plate that guides air to always pass through the heat exchanger 30. A filter (not shown) is also provided inside the hood 20 to remove foreign matter such as dust.

[0019] A drain pan 16 is provided below the heat exchanger 30 to receive condensation water generated by heat exchange with air in the heat exchanger 30 .

[0020] FIG. 3 is an enlarged external perspective view of the upper portion of the air conditioner 100 according to the first embodiment. FIG. 4 is an exploded perspective view of the top panel 12 at the top of the air conditioner 100 according to the first embodiment. As shown in FIGS. 3 and 4 , a top cover 40 is provided on the upper portion of the housing 11 to cover the housing 11. The top cover 40 has a box-like shape with an open bottom and a lid, and includes a top surface portion 40c that forms the top surface and four side surfaces 40d that form the front, rear, left, and right sides. The top surface portion 40c of the top cover 40 covers the entire top panel 12, and the four side surfaces 40d cover the upper end of the front panel 13, the upper end of the rear panel 14, and the upper end of the pair of side panels 15, respectively. Furthermore, a first opening 40a that is rectangular in plan view is formed in the top surface portion 40c of the top cover 40. A first standing wall portion 40b that protrudes upward is provided around the periphery of the first opening 40a so as to surround the first opening 40a. Four first standing walls 40b are provided along the first opening 40a. The first standing walls 40b prevent rainwater from infiltrating into the first opening 40a, which communicates with the air outlet 12a. When the top cover 40 is attached to the top of the housing 11, the air outlet 12a of the top panel 12 is disposed within the first opening 40a of the top cover 40, and the air outlet 12a of the top panel 12 communicates with the first opening 40a of the top cover 40. An infiltration suppression member 43, rectangular in plan view, is provided on the top of the front panel 13. The infiltration suppression member 43 prevents rainwater from infiltrating into the housing 11 through a gap 40f (see FIG. 10 , described later) formed between the front side surface 40d and the front panel 13. The infiltration suppression member 43 and the front panel 13 each have a plurality of screw holes (not shown) formed at corresponding positions. The infiltration suppression member 43 is placed on the front side of the upper part of the front panel 13, and screws (not shown) are inserted horizontally into the screw holes in the infiltration suppression member 43 and the front panel 13, and the infiltration suppression member 43 is fixed to the front panel 13 with the screws (not shown). For example, the infiltration suppression member 43 is fixed to the front panel 13 with screws at multiple locations along the left-right direction of the front panel 13.

[0021] The top cover 40 is provided with a duct connection member 41 having a rectangular shape in plan view. The duct connection member 41 has a second opening 41a having a rectangular shape in plan view. The duct connection member 41 has a second standing wall 41b protruding upward from the periphery of the second opening 41a, surrounding the second opening 41a. Four second standing walls 41b are provided along the second opening 41a. The second standing walls 41b prevent rainwater from entering the second opening 41a of the duct connection member 41, which communicates with the air outlet 12a of the top panel 12, and are used to attach the air outlet duct DC. The lower end of the second standing wall 41b has a flange 41c extending outward. The flange 41c is used for attachment to the top cover 40.

[0022] Fig. 5 is a perspective view illustrating a method for attaching the duct connecting member 41 to the air conditioner 100 according to Embodiment 1. Fig. 6 is a perspective view illustrating a method for attaching the air outlet duct DC to the air conditioner 100 according to Embodiment 1. Fig. 7 is a schematic diagram illustrating a method for attaching the air outlet duct DC to the air conditioner 100 according to Embodiment 1.

[0023] A plurality of screw holes (not shown) are formed at corresponding positions on the flange portion 41c of the duct connection member 41 and on the peripheral portion 40c1 of the first opening 40a of the upper surface portion 40c of the top cover 40. As shown in FIG. 5 , the duct connection member 41 is disposed so that the second upright wall portion 41b surrounds the first upright wall portion 40b of the top cover 40 from the outside. Screws SR are inserted vertically into the screw holes in the flange portion 41c and the peripheral portion 40c1 to secure the flange portion 41c to the peripheral portion 40c1 with the screws SR. For example, the duct connection member 41 is secured to the top cover 40 with the screws SR at two locations on each of the four corners and one location in the center of each of the four sides. Therefore, the duct connection member 41 can be attached to the top cover 40 by attaching the screws SR and can be removed from the top cover 40 by removing the screws SR. That is, the duct connection member 41 is detachably attached to the top cover 40. Furthermore, since the second standing wall portion 41b of the duct connection member 41 is disposed so as to surround the first standing wall portion 40b of the top cover 40, the first standing wall portion 40b and the second standing wall portion 41b can double-block rainwater, thereby preventing rainwater from entering the housing 11 through the air outlet 12a.

[0024] 6 and 7 , the air outlet duct DC is connected to the duct connection member 41 before the duct connection member 41 is attached to the top cover 40. Specifically, a plurality of screw holes (not shown) are formed at corresponding positions on the lower end of the air outlet duct DC and the second standing wall portion 41b of the duct connection member 41. The air outlet duct DC is arranged to surround the second standing wall portion 41b of the duct connection member 41 from the outside, and screws SR are inserted horizontally into the screw holes on the lower end of the air outlet duct DC and the second standing wall portion 41b to secure the air outlet duct DC to the second standing wall portion 41b with the screws SR. For example, the air outlet duct DC is secured to the duct connection member 41 with the screws SR at multiple locations along the longitudinal direction of the second standing wall portion 41b. At this time, the air outlet duct DC and the duct connection member 41 are caulked. Therefore, the duct connection member 41 is subsequently attached to the top cover 40, but caulking is not required at this time. Furthermore, when detaching the air outlet duct DC for maintenance or the like, it is only necessary to remove the duct connection member 41, eliminating the need for re-caulking, thereby improving workability. Note that, although caulking is generally performed from the outside of the air outlet duct DC and the duct connection member 41, it may also be performed from the inside of the air outlet duct DC and the duct connection member 41.

[0025] FIG. 8 is a schematic plan view of the air conditioner 100 according to embodiment 1. FIG. 9 is a view of the X-X cross section of FIG. 8 as viewed in the direction of the arrows. FIG. 10 is a view of the Y-Y cross section of FIG. 8 as viewed in the direction of the arrows. Of the four side surface portions 40d of the top cover 40, the rear and left and right side surface portions 40d, the rear panel 14, and the pair of side panels 15 each have a plurality of screw holes (not shown) formed at corresponding positions. As shown in FIGS. 8 to 10, the top cover 40 is arranged to surround the four side surface portions 40d from the outside. Screws SR are inserted horizontally into the screw holes in the rear and left and right side surface portions 40d, the rear panel 14, and the pair of side panels 15, and the rear and left and right side surface portions 40d are fixed to the rear panel 14 and the pair of side panels 15 with the screws SR, respectively.

[0026] Furthermore, of the four side surfaces 40d of the top cover 40, an extension 40e extending inward (toward the rear) is provided at the lower end of the front side surface 40d, and a gap 40f is formed between the extension 40e and the front panel 13. In other words, the front side surface 40d protrudes forward further than the inner (rear) end of the extension 40e. By allowing the side surface 40d to protrude forward in this manner, a space 40g is formed between the front side surface 40d and the front panel 13. Therefore, this space 40g and the gap 40f can be used to facilitate the attachment and detachment of the front panel 13 and the rear panel 14, which are detachably attached to the housing 11. Furthermore, the provision of the extension 40e makes it difficult for rainwater to penetrate into the interior of the housing 11 through the gap between the front side surface 40d and the front panel 13. Furthermore, by covering the gap 40f with the infiltration suppression member 43 described above, it is possible to suppress the infiltration of rainwater into the housing 11 through the gap 40f.

[0027] In the first embodiment, screws SR are used as fixing members between the housing 11 and the infiltration suppression member 43, between the housing 11 and the top cover 40, between the duct connection member 41 and the top cover 40, and between the duct connection member 41 and the outlet duct DC, but this is not limited to this and other members may be used as long as they are substitutes.

[0028] As described above, the air conditioner 100 according to the first embodiment comprises a box-shaped housing 11 having an intake port 14a and an exhaust port 12a formed on the top surface of the housing 11, a fan 7 provided inside the housing 11 and drawing in air through the intake port 14a and blowing the air out through the exhaust port 12a, a heat exchanger 30 provided inside the housing 11 and exchanging heat between the air and a heat medium, a top cover 40 covering the top of the housing 11, and a duct connecting member 41 provided on the top cover 40 and to which an exhaust duct DC is connected. The top cover 40 has an upper surface portion 40c that forms the top surface, and a duct connecting member 41 formed on the top surface portion 40c and connected to the exhaust port 12a. The duct connecting member 41 has a first opening 40a through which the air passes, and a first standing wall portion 40b that is arranged to surround the first opening 40a and protrudes upward, and the duct connecting member 41 has a second opening 41a that communicates with the air outlet 12a, a second standing wall portion 41b that is arranged to surround the second opening 41a, protrudes upward, and to which the air outlet duct DC is fixed with a fixing member, and a flange portion 41c that is arranged at the lower end of the second standing wall portion 41b and extends outward, and the second standing wall portion 41b is arranged to surround the first standing wall portion 40b of the top cover 40, and the flange portion 41c is fixed to the upper surface portion 40c of the top cover 40 with a fixing member.

[0029] According to the air conditioner 100 of embodiment 1, the top cover 40 that covers the top of the housing 11 is provided, which prevents rainwater from entering the interior of the housing 11 through gaps at the top of the housing 11 and improves waterproofing. Furthermore, the flange portion 41c of the duct connection member 41 is fixed to the upper surface portion 40c of the top cover 40 with a fixing member, and the duct connection member 41 is fixed to the top cover 40 with a fixing member and is provided detachably. Therefore, once the air outlet duct DC and the duct connection member 41 are caulked, the air outlet duct DC can be detached for maintenance or the like by simply removing the duct connection member 41, eliminating the need for re-caulking, thereby improving workability.

[0030] Furthermore, in the air conditioner 100 according to embodiment 1, the top cover 40 has a box shape with no bottom and a lid, and has four side portions 40d that form the front, back, left and right sides. Of the four side portions 40d, the front side portion 40d has an extension portion 40e at the lower end that extends toward the rear, and a gap 40f is formed between the extension portion 40e and the front surface of the housing 11, and a space 40g is formed between the front side portion 40d and the front surface of the housing 11.

[0031] According to the air conditioner 100 of embodiment 1, the space 40g and the gap 40f can be utilized to facilitate the attachment and detachment of the front panel 13 and the rear panel 14, which are detachably attached to the housing 11. Furthermore, the provision of the extension 40e can make it difficult for rainwater to seep into the interior of the housing 11 between the front side surface 40d and the front panel 13.

[0032] Second Embodiment A second embodiment will be described below, but explanations of parts that overlap with those of the first embodiment will be omitted, and parts that are the same as or equivalent to those of the first embodiment will be given the same reference numerals.

[0033] FIG. 11 is an exploded perspective view of the top cover 40 according to the second embodiment. FIG. 12 is a perspective view illustrating the watertight structure of the air conditioner 100 according to the second embodiment. As shown in FIGS. 11 and 12 , four first standing wall portions 40b of the top cover 40 are provided along the first opening 40a, one at the front, one at the rear, and one at the left and right of the first opening 40a. Gaps G (see FIG. 12 ) are formed between adjacent first standing wall portions 40b, i.e., at the four corners of the first opening 40a, during manufacturing. This is because the first standing wall portions 40b of the top cover 40 are manufactured by bending the periphery of the first opening 40a. Therefore, corner reinforcement members 40h are provided at each of the four corners of the first opening 40a to fill the gaps G between adjacent first standing wall portions 40b. These corner reinforcement members 40h are L-shaped in plan view and are provided to cover the outer edges of the ends of adjacent first standing wall portions 40b. The corner reinforcement members 40h are attached to each first standing wall portion 40b by welding the inner surface of the corner reinforcement member 40h to each end (WD in FIG. 12 ) of the adjacent first standing wall portion 40b. In this way, by welding the corner reinforcement members 40h to the first standing wall portions 40b of the top cover 40 to form a watertight structure, it is possible to prevent rainwater from entering the first opening 40a communicating with the air outlet 12a through the gap G between the adjacent first standing wall portions 40b.

[0034] FIG. 13 is a plan view of the rubber plate 42 according to the second embodiment. FIG. 14 is a perspective view illustrating a method for attaching the rubber plate 42 to the air conditioner 100 according to the second embodiment. As shown in FIGS. 13 and 14 , a rectangular rubber plate 42 with an opening in the center is provided between the peripheral edge 40c1 of the upper surface 40c of the top cover 40 and the flange 41c of the duct connection member 41. The rubber plate 42 is formed by joining four rectangular rubber plate pieces. The rubber plate 42 also has a plurality of screw holes (not shown) formed in positions corresponding to the plurality of screw holes (not shown) in the flange 41c of the duct connection member 41. The rubber plate 42 is then placed on the underside of the flange 41c of the duct connection member 41. Screws SR are inserted vertically into the screw holes in the flange 41c, the rubber plate 42, and the peripheral edge 40c1, and the rubber plate 42 and the flange 41c are fixed to the peripheral edge 40c1 with a fixing member. In this manner, the rubber plate 42 is provided between the peripheral edge 40c1 of the upper surface 40c of the top cover 40 and the flange 41c of the duct connection member 41. This allows the rubber plate 42 to fill the gap between the peripheral edge 40c1 and the flange 41c, creating a watertight structure and preventing water from entering the air outlet 12a located inside the rubber plate 42. Furthermore, a key-shaped portion 42a is provided at each of the four corners of the rubber plate 42. These key-shaped portions 42a are portions where the joints between the rubber plate pieces of the rubber plate 42 are key-shaped. Therefore, even if water does enter between the peripheral edge 40c1 of the upper surface 40c of the top cover 40 and the flange 41c of the duct connection member 41, the key-shaped portions 42a can block the water, making it difficult for the water to reach the inside of the rubber plate 42. The hook-shaped portion 42a also prevents gaps from occurring at the joints between the rubber plate pieces of the rubber plate 42 due to variations in position when the pieces are joined together.

[0035] As described above, in the air conditioner 100 according to embodiment 2, the first opening 40a has a rectangular shape, four first standing wall portions 40b are provided along the first opening 40a, and corner reinforcement members 40h are provided at the four corners of the first opening 40a to fill the gaps G formed between adjacent first standing wall portions 40b, and the inner surfaces of the corner reinforcement members 40h are welded to the ends of the adjacent first standing wall portions 40b.

[0036] According to the air conditioner 100 of embodiment 2, corner reinforcement members 40h are welded to the first vertical wall portions 40b of the top cover 40 to create a watertight structure, thereby preventing rainwater from entering the first opening 40a connected to the air outlet 12a through the gap G between adjacent first vertical wall portions 40b.

[0037] In addition, the air conditioner 100 according to embodiment 2 is provided with a rectangular rubber plate 42 having an opening in the center, and the rubber plate 42 is placed on the underside of the flange portion 41c of the duct connection member 41 and is fixed to the upper surface portion 40c of the top cover 40 together with the duct connection member 41 by a fixing member.

[0038] According to the air conditioner 100 of embodiment 2, by providing a rubber plate 42 between the upper surface portion 40c of the top cover 40 and the flange portion 41c of the duct connecting member 41, the gap between them can be filled, creating a watertight structure and preventing water from entering the air outlet 12a located inside the rubber plate 42.

[0039] Furthermore, in the air conditioner 100 according to embodiment 2, the rubber plate 42 is formed by joining four rectangular rubber plate pieces, and the four corners of the rubber plate 42 are each provided with a key-shaped portion 42a, which is a portion where the joints between the rubber plate pieces are key-shaped.

[0040] In the air conditioner 100 according to the second embodiment, a key-shaped portion 42a, which is a portion where the joints between the rubber plate pieces are key-shaped, is provided at each of the four corners of the rubber plate 42. Therefore, even if water seeps in between the peripheral edge portion 40c1 of the upper surface portion 40c of the top cover 40 and the flange portion 41c of the duct connecting member 41, the key-shaped portion 42a can block the water, making it difficult for the water to reach the inside of the rubber plate 42.

[0041] 1 Fan casing, 7 Fan, 7a Blade, 11 Housing, 12 Top panel, 12a Air outlet, 13 Front panel, 14 Rear panel, 14a Intake port, 15 Side panel, 16 Drain receiver, 20 Hood, 30 Heat exchanger, 40 Top cover, 40a First opening, 40b First standing wall portion, 40c Upper surface portion, 40c1 Peripheral edge portion, 40d Side portion, 40e Extension portion, 40f Gap, 40g Space, 40h Corner reinforcement member, 41 Duct connecting member, 41a Second opening, 41b Second standing wall portion, 41c Flange portion, 42 Rubber plate, 42a Key-shaped portion, 43 Infiltration suppression member, 100 Air conditioner.

Claims

1. A box-shaped housing having an intake port and an outlet formed on the top panel that constitutes the top surface, A fan is provided inside the housing, which draws in air from the intake port and blows out the air from the outlet, A heat exchanger is provided inside the aforementioned housing and is used to exchange heat between the air and the heat transfer medium. A top cover that covers the upper part of the aforementioned housing, The top cover is provided with a duct connecting member to which an outlet duct is connected, The aforementioned top cover is, The upper surface consists of an upper surface portion that forms the top surface and covers the entire top panel, A first opening formed in the upper surface and communicating with the air outlet, It has a first vertical wall portion that surrounds the first opening and protrudes upward, The duct connecting member is, A second opening communicating with the aforementioned outlet, A second vertical wall portion is provided so as to surround the second opening, protruding upward, and the discharge duct is fixed by a fixing member, It has a flange portion that is provided at the lower end of the second vertical wall portion and extends outward, The second vertical wall portion is positioned to surround the first vertical wall portion of the top cover, and the flange portion is fixed to the upper surface of the top cover with a fixing member. Air conditioner.

2. The aforementioned top cover is, It has a box-like shape with no bottom and a lid, and has four side sections that make up the front, back, left, and right sides. Of the four side surfaces, the lower end of the front side surface is provided with an extended portion that extends toward the rear surface. A gap is formed between the extended portion and the front surface of the housing, and a space is formed between the front side portion and the front surface of the housing. The air conditioner according to claim 1.

3. The first opening has a rectangular shape, The aforementioned first vertical wall section is provided in four parts along the first opening, Corner reinforcing members are provided at each of the four corners of the first opening to fill the gaps formed between adjacent first vertical wall sections. The inner surface of the corner reinforcing member and each end of the first vertical wall portion adjacent to it are welded together. The air conditioner according to claim 1 or 2.

4. It is equipped with a rectangular rubber plate with an opening in the center, The aforementioned rubber sheet is The duct connecting member is positioned on the lower surface of the flange portion and is fixed together with the duct connecting member to the upper surface of the top cover by a fixing member. The air conditioner according to claim 1 or 2.

5. The aforementioned rubber sheet is made up of four rectangular pieces of rubber sheet joined together. Each of the four corners of the rubber sheet is provided with a key-shaped portion where the joints between the pieces of rubber sheet are shaped like a key. The air conditioner according to claim 4.