Air conditioner

Abstract

This air conditioner comprises: a box-shaped housing having a blowout port and an intake port that is formed on a rear surface or a front surface, the housing being such that an air passage from the intake port to the blowout port is formed therein; a fan provided inside the housing, the fan causing the air taken in from the intake port to pass through the air passage and be blown out from the blowout port; a heat exchanger provided in the air passage, the heat exchanger exchanging heat between the air and a heat medium; a hood provided so as to cover the intake port; and a filter disposed within the hood, the filter removing foreign matter entering the intake port. The hood has: a filter rail having an insertion port part into which the filter is inserted at an upper part thereof; and a filter cover provided to the upper part, the filter cover covering the insertion port part. The filter rail has: a pair of side filter rails provided to left and right side parts, the side filter rails supporting the filter inserted into the insertion port part; an upper filter rail provided to the upper part, the upper filter rail supporting the filter inserted into the insertion port part; and a lower filter rail provided to a lower part, the lower filter rail supporting the filter inserted into the insertion port part. The filter cover has a first filter-pressing part that presses the filter inserted into the insertion port part against the upper filter rail. The pair of side filter rails have a second filter-pressing part that presses the filter inserted into the insertion port part against the lower filter rail.

Description

air conditioner

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

[0002] Conventionally, there is an air conditioner equipped with a blower 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 blower, a heat exchanger, and a drain pan inside a housing. An air path is formed inside the housing, extending from an air intake formed in a front panel that constitutes the front surface of the housing to an air outlet formed in a top panel that constitutes the top surface of the housing. Air taken into the housing through the air intake on the front surface of the housing passes through the heat exchanger, is conditioned, and is then blown out through an air outlet 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 such cases, a hood such as that described in Patent Document 2 may be attached to cover the air intake port of the indoor unit of the air conditioner to prevent the intake port from being blocked by snow.

[0004] International Publication No. 2022 / 029891 Japanese Patent Application Laid-Open No. 2001-182969

[0005] However, the hood in Patent Document 2 does not have a structure to reduce the intrusion of dust into the indoor unit, so even if this hood is installed, there is a problem that it is not possible to reduce the intrusion of dust into the indoor unit.

[0006] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an air conditioner that reduces the intrusion of dust into the interior of the air conditioner.

[0007] The air conditioner according to the present disclosure comprises a box-shaped housing having an air outlet and an air inlet formed on a rear or front surface, with an air passage formed therein from the air inlet to the air outlet, a fan provided inside the housing and adapted to cause air drawn in through the air inlet to pass through the air passage and blow out the air from the air outlet, a heat exchanger provided in the air passage and performing heat exchange between the air and a heat medium, a hood provided to cover the air inlet, and a filter disposed within the hood and removing foreign matter entering the air inlet, the hood having a filter rail having an insertion opening at an upper portion through which the filter is inserted, and a filter cover provided at an upper portion and covering the insertion opening, The filter rail comprises a pair of side filter rails provided on the left and right sides and supporting the filter inserted into the insertion opening, an upper filter rail provided at the top and supporting the filter inserted into the insertion opening, and a lower filter rail provided at the bottom and supporting the filter inserted into the insertion opening, the filter cover having a first filter pressing portion that presses the filter inserted into the insertion opening against the upper filter rail, and the pair of side filter rails having second filter pressing portions that press the filter inserted into the insertion opening against the lower filter rail.

[0008] According to the air conditioner according to the present disclosure, it is possible to reduce the intrusion of dust into the interior of the unit.

[0009] 12 is an external perspective view of an air conditioner according to embodiment 1, as seen from the front side. FIG. 13 is a front view of an air conditioner according to embodiment 1. FIG. 14 is a cross-sectional view taken along the arrows A-A in FIG. 2. FIG. 15 is a front view of a hood according to embodiment 1. FIG. 16 is an external perspective view of a hood according to embodiment 1, as seen from the rear side. FIG. 17 is a rear view of a hood according to embodiment 1. FIG. 18 is a cross-sectional view taken along the arrows B-B in FIG. 6. FIG. 19 is a perspective view of a filter rail of a hood according to embodiment 1. FIG. 20 is a side view of a filter rail of a hood according to embodiment 1. FIG. 21 is a side view of a filter cover removed from a hood according to embodiment 1 and a filter pulled out. FIG. 22 is a perspective view of a filter cover removed from a hood according to embodiment 1. FIG. 23 is a perspective view of a filter pulled out from a hood according to embodiment 1. FIG. 24 is a perspective view of a filter cover of a hood according to embodiment 1. FIG. 25 is a side view of a side filter rail of a hood according to embodiment 1. FIG. 26 is an enlarged side view of a portion viewed from the arrow A in FIG. 7. FIG. 27 is an enlarged perspective view of a portion viewed from the arrow B in FIG. 7. FIG. 8 is an enlarged perspective view of the portion indicated by the arrow B in FIG. 7 .

[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 seen from the front side. Fig. 2 is a front view of the air conditioner 100 according to embodiment 1. Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 2. The outline arrows in Fig. 1 indicate the flow of air.

[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 FIGS. 1 to 3 , the air conditioner 100 includes a box-shaped housing 11 that forms the outer shell. The housing 11 includes a top panel 16 and a top cover 12 that form 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 is detachably attached to the housing 11 and can be removed for maintenance of the internal components of the housing 11 (such as the fan 7 described below). The top panel 16 and the top cover 12 are formed with an outlet 12a that blows air (conditioned air) upward, and the rear panel 14 is formed with an inlet 14a that draws air. An air passage 11a is formed inside the housing 11, connecting the inlet 14a to the outlet 12a. Note that in the first embodiment, the front panel 13 and the rear panel 14 are divided into two parts, upper and lower, but this is not limited thereto. In addition, in the first embodiment, the air inlet 14 a is formed in the rear panel 14 , but this is not limitative and the air inlet 14 a may be formed in the front panel 13 .

[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 8 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, and the top panel 16 and the top cover 12 have air outlets 12a connected to an outlet duct (not shown) 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. The hood 20 will be described later. 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 8, and exchanges heat with the heat medium inside the heat exchanger 8. The air that has exchanged heat with the heat medium (conditioned air) is then supplied from the air outlet 12a through the outlet duct 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 multiple blades (not shown) 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. In the first embodiment, a double-inlet sirocco fan is used as the fan 7, but this is not limiting 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 16 that constitutes the housing 11 and to a support beam (not shown) for the fan casing 1.

[0018] The heat exchanger 8 is, for example, a fin-and-tube type heat exchanger, and is disposed at an angle to the air passage 11a inside the housing 11. This arrangement is intended to ensure an effective area and reduce the external dimensions of the housing 11, but at the same time, it also serves as a partition plate that guides the air so that it always passes through the heat exchanger 8.

[0019] In addition, a drain pan (not shown) is provided below the heat exchanger 8 to receive condensation water generated by heat exchange with air in the heat exchanger 8.

[0020] FIG. 4 is a front view of the hood 20 according to the first embodiment. FIG. 5 is an external perspective view of the hood 20 according to the first embodiment, as seen from the rear side. FIG. 6 is a rear view of the hood 20 according to the first embodiment. FIG. 7 is a cross-sectional view taken along the line B-B in FIG. 6. FIG. 8 is a perspective view of the filter rail 21 of the hood 20 according to the first embodiment. FIG. 9 is a side view of the hood 20 according to the first embodiment, with the filter cover 25 removed and the filter 30 pulled out. FIG. 10 is a perspective view of the hood 20 according to the first embodiment, with the filter cover 25 removed. FIG. 11 is a perspective view of the hood 20 according to the first embodiment, with the filter 30 pulled out. FIG. 12 is a perspective view showing the interior of the hood 20 according to the first embodiment. FIG. 13 is an enlarged side view of the portion viewed from the arrow C in FIG. 12. FIG. 14 is a rear view showing the flow of rainwater adhering to the hood 20 according to the first embodiment. FIG. 15 is a side view showing the flow of rainwater adhering to the hood 20 according to the first embodiment.

[0021] As described above, the hood 20 is fixed to the rear panel 14 of the housing 11 so as to cover the air inlet 14a, thereby reducing the infiltration of foreign matter such as snow, rainwater, and dust into the housing 11 through the air inlet 14a. As shown in FIGS. 4 to 7 , the hood 20 has an external air inlet 20b formed on its underside and a communication port 20a formed on its front side. By driving the fan 7, the air conditioner 100 draws outdoor air into the hood 20 through the external air inlet 20b and sucks it into the housing 11 through the communication port 20a, which communicates with the air inlet 14a. The hood 20 has a rectangular shape when viewed from the front and rear, and a generally trapezoidal shape when viewed from the side, with its upper portion sloping downward from the front to the rear. The hood 20 has a filter rail 21 having an insertion opening 21a at the top through which the filter 30 is inserted, a filter cover 25 that covers the insertion opening 21a, and an outer panel 27 that is a flat plate on which a rain gutter 26 is provided.

[0022] The filter 30 removes foreign matter such as dust that enters the suction port 14a. As shown in Fig. 11, the filter 30 has a rectangular filter portion 31 that removes foreign matter, a hollow rectangular frame portion 32 that holds the periphery of the filter portion 31, and a knob portion 33 provided on the upper part of the frame portion 32.

[0023] As shown in FIG. 8 , the filter rail 21 has a rectangular shape with an opening in the center and includes an upper filter rail 22, a pair of side filter rails 23, and a lower filter rail 24. The upper filter rail 22 extends in the left-right direction and is provided at the upper part to support the upper part of the filter 30 inserted into the insertion opening 21 a. The lower filter rail 24 also extends in the left-right direction and is provided at the lower part to support the lower part of the filter 30 inserted into the insertion opening 21 a. The lower filter rail 24 also has a plurality of drain holes 24 a formed at intervals in the left-right direction. These drain holes 24 a are used to drain rainwater and the like from the filter rail 21. The pair of side filter rails 23 extend in the up-down direction and are provided at the left and right sides to support the left and right sides of the filter 30 inserted into the insertion opening 21 a. The pair of side filter rails 23 also have rail portions 23 b extending in the up-down direction. As shown in Fig. 7, the pair of side filter rails 23 are provided at an angle in a side view so that they approach the rear panel 14 (left side in Fig. 7) of the housing 11 as they move from top to bottom. As shown in Fig. 9, the filter 30 inserted into the insertion opening 21a slides along the rail portions 23b in the diagonal direction indicated by the arrow.

[0024] 4, the filter rail 21 is provided with a center pillar 28 that extends vertically and connects the left-right center of the upper filter rail 22 with the left-right center of the lower filter rail 24. This center pillar 28 is a reinforcing member that also prevents the filter 30 from being sucked into the air conditioner 100, improving the strength of the filter rail 21. Note that the center pillar 28 is omitted from the filter rail 21 shown in FIG.

[0025] As shown in FIG. 5 , a filter cover 25 that covers the insertion opening 21 a is provided at the top of the hood 20 and is located behind an upper panel 29 that forms the upper surface of the hood 20. This filter cover 25 is removable, and as shown in FIGS. 9 and 10 , with the filter cover 25 removed, a filter 30 can be inserted diagonally downward through the insertion opening 21 a to be installed inside the hood 20. This filter 30 is positioned diagonally in the external air passage (not shown) between the external intake port 20 b and the communication port 20 a. Furthermore, as shown in FIGS. 9 and 11 , with the filter cover 25 removed, the filter 30 can be removed to the outside of the hood 20 by grasping the tab 33 and pulling it diagonally upward through the insertion opening 21 a.

[0026] In this way, by adopting a structure in which the filter 30 is removed by pulling it diagonally upward, it is easier to remove the filter 30 than by pulling it straight up. Furthermore, by adopting a structure in which the attachment position of the filter 30 is disposed inside the hood 20, the number of screws SR that need to be removed when removing the filter 30 is reduced compared to a structure in which the attachment position of the filter 30 is inside the housing 11, thereby improving maintainability.

[0027] 13, while the air conditioner 100 is operating, large debris 90 may be sucked in by the fan 7 through the external suction port 20b and adhere to the filter 30, but in Embodiment 1, the filter 30 is attached at an angle along the pair of side filter rails 23 so that the surface on which debris and other foreign matter adheres faces downward. Therefore, when the air conditioner 100 is stopped, the large debris 90 that has adhered to the filter 30 falls naturally (see the solid arrow in FIG. 13), making it unnecessary to remove the large debris 90 that has adhered to the filter 30 after the air conditioner 100 is stopped.

[0028] Furthermore, as shown in Figures 12 and 13, the lower filter rail 24 has multiple drainage holes 24a formed along the left-right direction, so even if small debris 91 accumulates inside the filter rail 21, the small debris 91 is also discharged from the drainage holes 24a along with the discharge of rainwater (see the solid arrows in Figure 12 and the dashed arrows in Figure 13), thereby reducing the frequency with which the filter rail 21 needs to be cleaned.

[0029] 5 to 7, the external panel 27 has a rectangular shape, constitutes the rear surface of the hood 20, and is provided at an angle opposite to the pair of side filter rails 23. In other words, the external panel 27 is provided at an angle in side view so that it moves away from the rear panel 14 of the housing 11 (the left side in FIG. 7) as it moves from the top to the bottom.

[0030] The rain gutters 26 guide rainwater flowing along the outer panel 27 to the left and right sides. The rain gutters 26 are provided at the bottom of the outer panel 27 and have an inverted V-shape that slopes from the center to both sides. The rain gutters 26 also have a lower surface 26b that forms the bottom surface and extends from the center to both sides, and a vertical wall 26a that protrudes upward from the rear end of the lower surface 26b and extends from the center to both sides. The vertical wall 26a prevents rainwater flowing along the lower surface 26b from spilling outside (rearward) of the rain gutters 26. Rainwater adhering to the upper part of the hood 20 and the outer panel 27 flows from the top of the hood 20 down the outer panel 27 as indicated by the dashed arrows in Figures 14 and 15 , and reaches the rain gutters 26 provided at the bottom of the outer panel 27. The rainwater that reaches the rain gutters 26 then flows down the gutters 26 toward the left and right sides, respectively. The area surrounded by the dashed line in FIG. 14 is a region formed below the external panel 27 where the wind speed increases when the fan 7 is driven (hereinafter referred to as the high wind speed region R1). Rainwater present near the high wind speed region R1 is sucked into the interior of the hood 20 through the external suction ports 20b formed on the underside of the hood 20 and into the housing 11. Therefore, by providing the rain gutters 26 on the external panel 27, rainwater adhering to the upper part of the hood 20 and the external panel 27 can flow to the regions on the left and right sides of the external panel 27 where the wind speed is lower, rather than flowing near the high wind speed region R1. As a result, the amount of rainwater sucked into the interior of the housing 11 due to the suction of rainwater into the interior of the hood 20 through the external suction ports 20b can be reduced. The rain gutters 26 also serve as reinforcing members, and providing the rain gutters 26 on the outer panel 27 can improve the strength of the outer panel 27. The shape of the rain gutters 26 is not limited to an inverted V-shape that slopes from the center to both sides, but may also be a shape that slopes from one of the left and right sides to the other.

[0031] Fig. 16 is a perspective view of the filter cover 25 of the hood 20 according to embodiment 1. Fig. 17 is a side view of the side filter rail 23 of the hood 20 according to embodiment 1. Fig. 18 is an enlarged side view of the portion viewed from arrow A in Fig. 7. Fig. 19 is an enlarged perspective view of the portion viewed from arrow A in Fig. 7. Fig. 20 is an enlarged side view of the portion viewed from arrow B in Fig. 7. Fig. 21 is an enlarged perspective view of the portion viewed from arrow B in Fig. 7.

[0032] 16, 18, and 19, the filter cover 25 has an upper surface portion 25b constituting the upper surface, a rear surface portion 25c extending diagonally downward from the rear end of the upper surface portion 25b, and a first filter retaining portion 25a extending downward from the upper surface portion 25b and then further extending diagonally downward and rearward from there. The first filter retaining portion 25a is structured to press the upper portion of the frame portion 32 of the filter 30 inserted into the insertion opening 21a against the upper filter rail 22. The filter cover 25 is fixed to the upper portion of the external panel 27 with screws. Specifically, a plurality of screw holes SH are formed at corresponding positions on the rear surface portion 25c of the filter cover 25 and the upper portion of the external panel 27. The filter cover 25 is then placed on the top of the hood 20 so that the rear surface 25c overlaps the top of the external panel 27, and screws SR are inserted horizontally into the screw holes SH in the rear surface 25c of the filter cover 25 and in the top of the external panel 27, and the filter cover 25 is fixed to the external panel 27 with the screws SR. For example, the filter cover 25 is fixed to the external panel 27 with the screws SR at multiple locations along the left-right direction of the top of the external panel 27.

[0033] 17, 20, and 21, the pair of side filter rails 23 are provided below the rail portion 23b, extend diagonally downward and forward from the lower portion of the rail portion 23b, and have a second filter retaining portion 23a extending further downward from there. The second filter retaining portion 23a has a spring plate structure that presses the lower portion of the frame portion 32 of the filter 30 inserted into the insertion opening 21a against the lower filter rail 24. Note that while Fig. 17 shows one of the pair of side filter rails 23, the other has a symmetrical structure.

[0034] When the filter 30 is inserted diagonally downward through the insertion opening 21a and placed inside the hood 20, and the filter cover 25 is then attached to the hood 20, the first filter retaining portion 25a presses the upper portion of the frame 32 of the filter 30 against the upper filter rail 22, as shown in FIGS. 18 and 19 . Because the dimensions of the frame 32 of the filter 30 vary from 7 to 10 mm, second filter retaining portions 23a are provided on the pair of side filter rails 23. By doing so, even if the dimensions of the frame 32 of the filter 30 vary, the second filter retaining portion 23a presses the lower portion of the frame 32 of the filter 30 against the lower filter rail 24, as shown in FIGS. 20 and 21 , eliminating any gaps between the filter rail 21 and the filter 30. As a result, foreign objects such as small animals, large insects, and large debris 90 can be prevented from entering the suction opening 14a through gaps between the filter rail 21 and the filter 30. Furthermore, since no gap is created between the filter rail 21 and the filter 30, rattling of the filter 30 can be prevented while the air conditioner 100 is in operation.

[0035] As described above, the air conditioner 100 according to the first embodiment comprises: a box-shaped housing 11 having an air outlet 12a and an air inlet 14a formed on the rear or front surface, and having an air passage 11a formed therein from the air inlet 14a to the air outlet 12a; a fan 7 provided inside the housing 11, which causes air drawn in through the air inlet 14a to pass through the air passage 11a and blow it out of the air outlet 12a; a heat exchanger 8 provided in the air passage 11a and performs heat exchange between the air and a heat medium; a hood 20 provided to cover the air inlet 14a; and a filter 30 arranged in the air passage 11a between the air inlet 14a and the heat exchanger 8. The hood 20 has a filter rail 21 at its upper portion having an insertion opening 21a into which the filter 30 is inserted, and a filter rail 22 provided at its upper portion and covering the insertion opening 21a. The filter rail 21 has a pair of side filter rails 23 provided on the left and right sides and supporting the filter 30 inserted into the insertion opening 21 a, an upper filter rail 22 provided on the top and supporting the filter 30 inserted into the insertion opening 21 a, and a lower filter rail 24 provided on the bottom and supporting the filter 30 inserted into the insertion opening 21 a, and the filter cover 25 has a first filter pressing portion 25 a that presses the filter 30 inserted into the insertion opening 21 a against the upper filter rail 22, and the pair of side filter rails 23 have second filter pressing portions 23 a that press the filter 30 inserted into the insertion opening 21 a against the lower filter rail 24.

[0036] In the air conditioner 100 according to embodiment 1, the filter cover 25 includes a first filter pressing portion 25a that presses the filter 30 inserted through the insertion opening 21a against the upper filter rail 22, and the pair of side filter rails 23 includes a second filter pressing portion 23a that presses the filter 30 inserted through the insertion opening 21a against the lower filter rail 24. Therefore, the first filter pressing portion 25a presses the upper portion of the filter 30 against the upper filter rail 22, and the second filter pressing portion 23a presses the lower portion of the filter 30 against the lower filter rail 24, eliminating any gaps between the filter rail 21 and the filter 30. As a result, foreign objects such as small animals, large insects, and large debris are prevented from entering the air intake 14a through gaps between the filter rail 21 and the filter 30. This reduces the intrusion of debris and other debris into the air conditioner. Furthermore, because no gaps are formed between the filter rail 21 and the filter 30, rattling of the filter 30 is prevented during operation of the air conditioner 100.

[0037] In addition, in the air conditioner 100 according to embodiment 1, the hood 20 has an external intake port 20b formed on its underside for taking air inside, an external panel 27 arranged at an angle so as to move away from the housing 11 as it moves from the top to the bottom, and a rain gutter 26 arranged at the bottom of the external panel 27 for directing water to at least one of the left and right sides.

[0038] According to the air conditioner 100 of Embodiment 1, by providing the rain gutters 26 on the external panel 27, rainwater adhering to the upper part of the hood 20 and the external panel 27 can be directed to the areas on the left and right sides of the external panel 27 where the wind speed is low, rather than flowing near the high wind speed region R1. As a result, it is possible to reduce the amount of rainwater being drawn into the housing 11 by the rainwater being drawn into the hood 20 through the external air inlet 20b formed on the underside of the hood 20. The rain gutters 26 also serve as reinforcing members, and providing the rain gutters 26 on the external panel 27 can improve the strength of the external panel 27.

[0039] Furthermore, in the air conditioner 100 according to embodiment 1, the pair of side filter rails 23 are arranged at an angle so as to approach the housing 11 as they move from the top to the bottom, the filter cover 25 is arranged so as to be freely attached and detached to the hood 20, and the filter 30 is arranged so as to be freely attached and detached to the hood 20 by sliding the pair of side filter rails 23 diagonally.

[0040] According to the air conditioner 100 of Embodiment 1, the filter 30 is configured to be removed by pulling it diagonally upward, which makes it easier to remove the filter 30 compared to a structure in which the filter 30 is removed by pulling it straight up. Furthermore, by configuring the filter 30 so that its attachment position is inside the hood 20, the number of screws SR that need to be removed when removing the filter 30 is reduced compared to a structure in which the filter 30 is attached inside the housing 11, improving maintainability.

[0041] Furthermore, in the air conditioner 100 according to the first embodiment, the lower filter rail 24 is formed with a plurality of drain holes 24a along the left-right direction.

[0042] According to the air conditioner 100 of embodiment 1, the lower filter rail 24 has a plurality of drain holes 24a formed along the left-right direction, so that even if small debris 91 accumulates inside the filter rail 21, the small debris 91 is also discharged from the drain holes 24a along with the discharge of rainwater, thereby reducing the frequency of cleaning the filter rail 21.

[0043] 1 Fan casing, 7 Fan, 8 Heat exchanger, 11 Housing, 11a Air passage, 12 Top cover, 12a Air outlet, 13 Front panel, 14 Rear panel, 14a Intake port, 15 Side panel, 16 Top panel, 20 Hood, 20a Communication port, 20b External intake port, 21 Filter rail, 21a Insertion port, 22 Upper filter rail, 23 Side filter rail, 23a Second filter holding portion, 23b Rail portion, 24 Lower filter rail, 24a Water drain hole, 25 Filter cover, 25a First filter holding portion, 25b Upper surface portion, 25c Rear surface portion, 26 Rain gutter, 26a Standing wall portion, 26b Lower surface portion, 27 External panel, 28 Center pillar, 29 Upper panel, 30 Filter, 31 Filter portion, 32 Frame part, 33 handle part, 90 large garbage, 91 small garbage, 100 air conditioner.

Claims

1. A box-shaped housing having an air outlet and an air intake formed on the rear or front, with an air passage formed inside from the air intake to the air outlet, A fan is provided inside the housing, which draws in air from the intake port, passes it through the air passage, and blows it out from the outlet. A heat exchanger is provided in the aforementioned air passage and exchanges heat between the air and the heat transfer medium, A hood is provided to cover the aforementioned intake port, The hood is equipped with a filter that is placed inside the hood to remove foreign matter that enters the intake port, The aforementioned hood is A filter rail having an insertion opening at the top into which the aforementioned filter is inserted, It has a filter cover provided at the top that covers the insertion opening, The aforementioned filter rail is A pair of side filter rails are provided on the left and right sides to support the filter inserted into the insertion opening, An upper filter rail is provided at the top and supports the filter inserted into the insertion opening, It has a lower filter rail provided at the bottom, which supports the filter inserted into the insertion opening, The filter cover has a first filter retaining portion that presses the filter inserted into the insertion opening against the upper filter rail, The pair of side filter rails have a second filter retaining portion that presses the filter inserted into the insertion opening against the lower filter rail. Air conditioner.

2. The aforementioned hood is An external air intake port is formed on the lower surface to draw the aforementioned air into the interior. An external panel is provided at an angle so as it moves away from the housing from the top to the bottom, The exterior panel has a gutter provided at the lower part of the panel that guides water to at least one of the left and right sides. The air conditioner according to claim 1.

3. The aforementioned rain gutter is, It has a shape that slopes from the center to both sides. The air conditioner according to claim 2.

4. The aforementioned rain gutter is, It has a shape that slopes from one side to the other. The air conditioner according to claim 2.

5. The pair of side filter rails are arranged at an angle so that they approach the housing from the top to the bottom. The filter cover is detachably attached to the hood. The filter is detachably mounted on the hood by sliding the pair of side filter rails diagonally. An air conditioner according to any one of claims 1 to 4.

6. The lower filter rail has multiple drainage holes formed along the left-right direction. An air conditioner according to any one of claims 1 to 4.