DESCRIPTION AIR-CONDITIONEING DEVICE TECHNICAL FIELD The present invention relates to an air conditioner including a utilization unit. BACKGROUNDART A utilization unit of an air conditioner includes a heat exchanger inside a housing and is provided with a drain pan for receiving drain water generated by heat exchange of the heat exchanger. In some cases, the drain pan is disposed detachably from the housing so that the drain pan can be removed and cleaned at the time of cleaning, maintenance, or inspection (Patent Document 1: JP 2012-172856 A). SUMMARY OF THE INVENTION <Technical Problem> In addition to the heat exchanger, electric components are also accommodated in the utilization unit. To remove the drain pan, if the electric components are present on the removal path, the electric components need to be removed. <Solution to Problem> An air conditioner according to a first aspect includes a utilization unit. The utilization unit includes a housing, a heat exchanger, a drain pan, a first electric component, a second electric component, a first supporting portion, and a second supporting portion. The drain pan is disposed inside the housing and accommodates drain water from the heat exchanger. The first supporting portion supports the first electric component and is fixed to the housing. The second supporting portion supports the second electric component and is fixed to the first supporting portion. The second supporting portion is disposed at a first position in a removal path for removing the drain pan from the housing. The drain pan is removed from the housing after the second supporting portion is moved from the first position to a second position outside the removal path. In the air conditioner according to the first aspect, since electric components are divided into the first electric component and the second electric component and the drain pan is removed after the second electric component is moved from the first position to the second position outside the removal path, it is easy to remove the drain pan. An air conditioner according to a second aspect is the air conditioner according to the first aspect, wherein the second supporting portion is moved rotationally or slidingly from the first position to the second position. In the air conditioner according to the second aspect, since the second supporting portion is moved from the first position to the second position by rotation or sliding, the second supporting portion is moved smoothly, and it is easy to remove the drain pan. An air conditioner according to a third aspect is the air conditioner according to the first aspect, wherein the drain pan is removed from the housing with the second supporting portion not fixed to the first supporting portion. In the air conditioner according to the third aspect, since the drain pan is removed from the housing with the second supporting portion not fixed to thefirst supporting portion, it is easy to remove the drain pan. An air conditioner according to a fourth aspect is the system according to the third aspect, wherein the second supporting portion is rotated from the first position by an angle greater than or equal to an angle that reaches the second position outside the removal path, to be removed from the first supporting portion. In the air conditioner according to the fourth aspect, the portion of attachment of the second supporting portion to the first supporting portion is less prone to be damaged when the second supporting portion is moved to the second position or removal position. An air conditioner according to a fifth aspect is the air conditioner according to any one of the first aspect to the fourth aspect, wherein the utilization unit further includes a drain hose and a connecting portion. The drain hose discharges drain water accumulated in the drain pan. The connecting portion connects the drain hose to the drain pan. The second supporting portion overlaps the connecting portion when the second supporting portion is at the first position, and the connecting portion is exposed when the second supporting portion is at the second position. In the air conditioner according to the fifth aspect, since the connecting portion is exposed when the second supporting portion is at the second position, the drain hose can be easily removed from the drain pan by operating the connecting portion, and it is easy to remove the drain pan. An air conditioner according to a sixth aspect is the air conditioner according to any one of the first aspect to thefifth aspect, wherein the second electric component includes one or a combination selected from the group of an operation switch, a display unit, an electromagnetic wave receiving unit, and a buzzer. An air conditioner according to a seventh aspect is the air conditioner according to any one of the first aspect to the sixth aspect, wherein the utilization unit includes a fan and a fan motor. The fan is for delivering air to the heat exchanger. The fan motor is for driving the fan. The first electric component includes a drive circuit for driving the fan motor.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a utilization unit 10. FIG. 2 is a longitudinal sectional view of the utilization unit 10. FIG. 3 is an internal perspective view of the utilization unit. A relationship between a structural member 111, a drain pan 13, and an electric component assembly 20 is shown. FIG. 4 is a perspective view of the drain pan 13. FIG. 5 is a perspective view of the electric component assembly 20 (a first electric component 21, a second electric component 22, a first supporting portion 23, and a second supporting portion 24). FIG. 6 shows a relationship between the structural member 111 (a part of a housing 11), the drain pan 13, and the electric component assembly 20. The second supporting portion 24 is shown as being at a first position P. FIG. 7 shows a relationship between the structural member 111, the drain pan 13, and the electric component assembly 20. The second supporting portion 24 is shown as being at a second position P2. FIG. 8 shows a state in which the second supporting portion 24 is moved to second position P2 and a connecting portion 19 of a drain hose 18 is exposed. DESCRIPTION OF EMBODIMENTS <First embodiment> (1) Overall configuration An air conditioner 1 according to the present embodiment includes a utilization unit 10, a heat source unit, and a refrigerant pipe connecting the utilization unit and the heat source unit, and forms a vapor compression refrigeration cycle. The air conditioner 1 performs air conditioning operations such as cooling, heating, dehumidifying, and air blowing in a space in which the utilization unit is disposed. An external perspective view of the utilization unit 10 is shown in FIG. 1, a longitudinal sectional view thereof is shown in FIG. 2, and an internal perspective view thereof as seen from a right front side is shown in FIG. 3. The utilization unit 10 of the air conditioner 1 is a wall-mounted air conditioner whose rear surface is hung on a wall in a room in use. Note that, in each figure, directions as seen against the utilization unit 10 when the utilization unit 10 is hung on the wall are indicated by front, rear, up, down, right, and left arrows. The utilization unit 10 includes a housing 11, a heat exchanger 12, a fan 14, a drain pan 13, an electric component assembly 20, and a flap 15. The heat exchanger 12, the fan 14, the drain pan 13, and the electric component assembly 20 are disposed inside the housing 11, and the flap 15 is disposed at an air outlet B1 of the housing 11. The heat exchanger 12 is disposed inside the housing 11. Refrigerant flowing in a refrigerant circuit flows inside the heat exchanger 12. The refrigerant exchanges heat with air. When the fan 14 rotates, air is taken into the housing 11 from an air inlet B2 at the upper part of the housing 11, passes through the heat exchanger 12 and the fan 14, and is blown out of the housing 11 from the air outlet B1 at the lower part of the housing 11. The direction of the blown air is controlled by the position of the flap 15. (2) Detailed configuration (2-1) Drain pan 13 A perspective view of the drain pan 13 is shown in FIG. 3. As shown in the sectional view of FIG. 2, water condensed on the heat exchanger 12 drops into a front tray 13a and areartray 131. The front tray 13a is apart of the drainpan 13. The rear tray 131 is a part of the structural member 111 constituting a part of the housing 11. Drain water accumulated in the rear tray 131 moves to the front tray 13a. Drain water accumulated in the front tray 13a is discharged through the drain hose 18 to the outside of the utilization unit 10 and even to the outside of the room. The drain hose 18 is connected to the drain pan 13 by a connecting portion 19 so that the drain water can flow. The connecting portion 19 includes a screw 19a. (2-2) Electric component assembly 20 As shown in FIG. 5, the electric component assembly 20 includes a first electric component 21, a second electric component 22, a first supporting portion 23, a second supporting portion 24, and a room temperature sensor 31. As shown in FIG. 5, the first electric component 21 includes a printed circuit board and electric elements disposed on the printed circuit board. The first electric component 21 includes a drive circuit for driving a fan motor. The second electric component 22 includes an operation switch, a display unit, an electromagnetic wave receiving unit, and a buzzer. As shown in FIG. 1, the second electric component 22 is disposed at the right of the air outlet B1, and a part thereof is disposed on the outer surface (front lower surface) of the housing 11. The operation switch can be operated by the user to start or stop the operation of the air conditioner. When the operation switch is pressed, the air conditioner 1 starts an automatic operation. The automatic operation refers to an operation in which the air conditioner selectively performs cooling and heating operations based on the current room temperature or the like. The operation is stopped by pressing the operation switch again. The operation switch is beneficial when the user cannot find a remote controller or the remote controller is not operating. The display unit uses an LED. The display unit displays an operation state of the air conditioner, a timer state, the necessity to clean a filter, the occurrence of an abnormality, and the like by glowing or flashing of light or the like. The electromagnetic wave receiving unit receives electromagnetic waves from the remote controller. The electromagnetic waves are infrared radiation. The buzzer is not exposed to the outside of the housing 11, but is a part of the second electric component 22. When the electromagnetic wave receiving unit receives a signal from the remote controller, the buzzer produces a sound according to the signal. The first electric component 21 is attached to the first supporting portion 23. The first supporting portion 23 is fixed to the structural member 111 of the housing 11. The second electric component 22 is attached to the second supporting portion 24. As seen from FIG. 5 or the like, the second supporting portion 24 is attached to the first supporting portion 23 by a hinge structure. The second supporting portion 24 can rotate from a first position (P1) shown in FIG. 6 to a second position (P2) shown in FIG. 7 about a support 24a at the hinge portion. The first position (P1) of the second supporting portion 24 is the position of the second supporting portion 24 when the air conditioner 1 is in use. The second position (P2) of the second supporting portion 24 is the position of the second supporting portion 24 when the drain pan 13 is removed. When the second supporting portion 24 is rotated about the support 24a and moved from the first position to the second position, a stopper 23a of the first supporting portion 23 restricts further rotation of the second supporting portion 24, and further rotation of the second supporting portion 24 causes the second supporting portion 24 to be separated from the first supporting portion 23. Even in this case, the second electric component 22 is connected to the first electric component 21 by an electric wire, and the second electric component 22 and the second supporting portion 24 do not drop. The room temperature sensor 31 is a thermistor. The room temperature sensor 31 is attached to the first supporting portion 23. The room temperature sensor 31 is a temperature sensor for measuring the temperature around the sensor. An air flow path is provided around the room temperature sensor 31 so that air in the room is introduced from the outside of the housing 11 and is discharged. Thus, the room temperature sensor 31 enables the measurement of the room temperature.
(3) Removal of drain pan 13 At the time of cleaning, maintenance, or inspection of the air conditioner 1, it is preferable to remove the drain pan 13 from the housing 11. Here, a procedure for removing the drain pan 13 will be described. (3-1) The second supporting portion 24 is moved from the first position (P1) to the second position (P2). As described in (2-2), when the air conditioner 1 is in use, the second supporting portion 24 is at the first position (P1) (FIG. 6). In this state, the second supporting portion 24 is on a path for removing the drain pan 13, and it is difficult to remove the drain pan 13. Thus, the second supporting portion 24 is rotated about the support 24a and moved to the second position (P2) (FIG. 7). In this way, the second supporting portion 24 and the second electric component 22 are moved to the outside of the drain pan removal path. The second supporting portion 24 may not necessarily be the second position (P2) as long as it is out of the drain pan removal path. As described in (2-2), the second supporting portion 24 may be separated from the first supporting portion 23. (3-2) Removal of drain hose 18 In order to remove the drain pan 13 from the housing 11, it is necessary to remove the drain hose 18 from the drain pan 13. The drain hose 18 is connected to the drain pan 13 by the connecting portion 19. The connecting portion 19 includes the screw 19a. In the in-use arrangement of the air conditioner 1, the second supporting portion 24 is at the first position P1, and the second supporting portion 24 overlaps the connecting portion 19 as seen in a front view (or as seen in a direction of inserting a tool described later). Therefore, when the second supporting portion 24 is at the first position P1, it is difficult to loosen the screw 19a of the connecting portion 19 by using a tool such as a driver. By moving the second supporting portion from the first position P1 to the second position P2, the screw 19a of the connecting portion 19 is exposed as shown in FIG. 8. Since the screw 19a is exposed, it is easy to insert a tool such as a driver into the screw 19a, and the screw 19a can be easily removed. In this way, the drain hose 18 is removed from the drain pan 13. (3-3) Removal of drain pan 13 As described in (3-1) and (3-2), the drain pan 13 canbe removed by moving the second supporting portion to the outside of the removal path of the drain pan 13 and removing the drain hose 18. The drain pan 13 can be removed from the structural member 111 of the housing 11 by pulling out the drain pan 13 in the front-downward direction. (4) Features
(4-1) The air conditioner 1 according to the present embodiment includes the utilization unit 10, and the utilization unit 10 includes the housing 11, the drain pan 13, and the electric component assembly 20. The electric component assembly 20 includes the first electric component 21, the second electric component 22, the first supporting portion 23 supporting the first electric component 21, and the second supporting portion 24 supporting the second electric component 22. The second supporting portion 24 is movably attached to the first supporting portion 23. When the air conditioner 1 is in use, the second supporting portion 24 is at the first position Pl. When the second supporting portion 24 is at the first position, the second supporting portion 24 is on a path for removing the drain pan 13 from the housing 11. By moving the second supporting portion 24 from the first position P1 to the second position P2, the second supporting portion 24 is moved to the outside of the drain pan removal path. Conventionally, if the supporting portions of the electric components are integral and the second supporting portion 24 is fixedly attached to the first supporting portion, it has been necessary to remove the entire electric component assembly 20 in order to remove the drain pan. In the electric component assembly 20 according to the present embodiment, since the second supporting portion 24 is movably attached to the first supporting portion 23, the drain pan 13 can be removed only by moving the second supporting portion 24 to the second position P2 without the need to remove the entire electric component assembly 20. Note that the first electric component 21 includes the drive circuit for driving the fan motor. In other words, the first electric component includes a power component in which relatively high current flows. In contrast, the second electric component 22 includes one or a combination selected from the group of the operation switch, the display unit, the electromagnetic wave receiving unit, and the buzzer. The second electric component 22 consumes relatively low power. In addition, the second electric component 22 serves as an interface with the user. A part of the second electric component is disposed on the outer surface of the housing 11. (4-2) The second supporting portion 24 is moved from the first position P1 to the second position P2 by rotational movement. The rotational movement allows movement that does not require so much extra space. (4-3)
By moving the second supporting portion 24 from the first position P1 to the second position P2, the screw 19a of the connecting portion 19 can be exposed. When being at the first position P1, the second supporting portion 24 overlaps the screw 19a of the connecting portion 19 as seen in the direction of insertion of a tool, and it is difficult to insert the tool. Thus, by moving the second supporting portion 24 from the first position P1 to the second position P2, the screw 19a of the connecting portion 19 can be easily removed, and the drain pan 13 and the drain hose 18 can be removed. (5) Modifications (5-1) Modification 1A In the first embodiment, the second supporting portion 24 is moved from the first position P1 to the second position P2 by rotation. Ina modification 1A, the second supporting portion 24 is moved from the first position P1 to the second position P2 by sliding. In the modification 1A, the second supporting portion 24 is configured to be able to slide (translationally move) rightward from the first position P1 in FIG. 6. In this case, a space is required at the right of the second supporting portion 24. The embodiments of the present disclosure have been described above. Various modifications to modes and details should be available without departing from the object and the scope of the present disclosure recited in the claims. REFERENCE SIGNS LIST 1: Air conditioner 10: Utilization unit 11: Housing 111: Structural member 12: Heat exchanger 13: Drain pan 13a: Front tray 131: Rear tray 14: Fan 18: Drain hose 19: Connecting portion 19a: Screw 20: Electric component assembly 21: First electric component 22: Second electric component
23: First supporting portion 24: Second supporting portion P1: First position of second electric component P2: Second position of second electric component CITATION LIST PATENT LITERATURE Patent Literature 1: JP 2012-172856 A