Air conditioners

Abstract

To provide an air conditioner capable of suppressing temperature rise in an electrical box.SOLUTION: An air conditioner comprises: a body part having a suction port, a discharge port, and a flow path communicating from the suction port to the discharge port; and an air blowing unit that is housed in the body part, and circulates air in the flow path; and an electrical box having electrical components. The upper side of the electrical box is open.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an air conditioner. [Background technology]

[0002] 2. Description of the Related Art Air conditioners have been disclosed in the past.

[0003] For example, Patent Document 1 discloses an indoor unit of an air conditioner that is equipped with a filter cleaning mechanism that has been made smaller without reducing the heat exchange performance of the indoor heat exchanger. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2010-065893 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the air conditioner described in Patent Document 1, the electrical box is located away from the air passage that circulates air from the air inlet to the air outlet, so the temperature inside the electrical box rises. When the temperature rises, the deterioration rate of the components inside the electrical box increases.

[0006] In view of the above problems, an object of the present invention is to provide an air conditioner that can suppress a rise in temperature inside an electrical equipment box. [Means for solving the problem]

[0007] In one aspect of the present invention, the air conditioner comprises a main body having an intake port, an exhaust port, and a circulation passage connecting the intake port to the exhaust port, a blower section housed in the main body for circulating air through the circulation passage, and an electrical box having electrical components, the top of the electrical box being open.

[0008] In another aspect of the present invention, the air conditioner comprises a main body having an intake port, an exhaust port, and a flow passage connecting the intake port to the exhaust port, a blower housed in the main body for circulating air through the flow passage, a filter disposed at the intake port for capturing dust in the air flowing into the main body, an electrical box having electrical components, and a filter cleaning device for collecting the dust captured by the filter, the filter cleaning device having a dust box for collecting the collected dust, and the dust box is removably attached at a position closer to the exhaust port than the electrical box. Effect of the Invention

[0009] As described above, according to the present invention, it is possible to provide an air conditioner that can suppress a temperature rise inside the electrical component box. [Brief description of the drawings]

[0010] [Figure 1] 1 is a diagram showing a configuration of an air conditioner according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing the indoor unit according to the present embodiment. [Diagram 3] 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 4] FIG. 2 is a perspective view showing an electrical box according to the embodiment. [Diagram 5] FIG. 2 is a perspective view showing an electrical box and a filter according to the embodiment. [Figure 6] FIG. 2 is a plan view showing the indoor unit according to the present embodiment. [Figure 7] 3 is a cross-sectional view taken along line BB in FIG. 2. [Figure 8] FIG. 6 is an enlarged cross-sectional view of the electrical box shown in FIG. 5. [Figure 9] FIG. 2 is a perspective view showing the indoor unit according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings. Note that the present embodiment described below does not unduly limit the contents of the present invention described in the claims, and all of the configurations described in the present embodiment are not necessarily essential as the means for solving the problems of the present invention. In addition, in the drawings, the same or equivalent parts are given the same reference symbols, and the description will not be repeated.

[0012] An air conditioner 1000 according to an embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a diagram showing the configuration of the air conditioner 1000 according to the embodiment of the present invention. As shown in Fig. 1, the air conditioner 1000 adjusts the properties of air. Note that in this embodiment, the drawing shows an X-axis, a Y-axis, and a Z-axis that are perpendicular to each other. The Z-axis is parallel to the vertical direction, and the X-axis and the Y-axis are parallel to the horizontal direction.

[0013] The air conditioner 1000 includes an indoor unit 100, an outdoor unit (not shown), and an operating device (not shown). The outdoor unit is installed outside a room. The outdoor unit includes various components such as a fan, a compressor, a heat exchanger, and a four-way valve. The indoor unit 100 is connected to the outdoor unit by piping. A refrigerant circulates between the indoor unit 100 and the outdoor unit through the piping.

[0014] The operation device is, for example, a remote control, a tablet terminal, or a smartphone. The operation device is carried by a user.

[0015] Next, the configuration of the indoor unit 100 will be described with reference to Figures 1, 2, 3, and 5. Figure 2 is a front view showing the configuration of an air conditioner according to an embodiment of the present invention. Also, Figure 3 is a cross-sectional view taken along line AA in Figure 2. As shown in Figures 1, 2, and 3, the indoor unit 100 includes a main body 10. Also, a cabinet is provided inside the main body 10, and a fan, a fan motor, and an electrical box 60, which will be described later, are provided inside the cabinet.

[0016] The shape of the main body 10 is, for example, a substantially rectangular parallelepiped. The material of the main body 10 is, for example, a synthetic resin. The main body 10 has an upper surface portion 11, a lower surface portion 12, a front surface portion 13, a rear wall 14, a right side cover 15, and a left side cover 16. The rear wall 14 is attached to the upper part of a side wall of a room.

[0017] The rear wall 14 is disposed opposite the front portion 13. A first direction D1 indicates a direction from the rear wall 14 toward the front portion 13. The first direction D1 is the positive direction of the X-axis. The rear wall 14 is disposed on the opposite side of the main body portion 10 to the first direction D1. The distance between the rear wall 14 and the front portion 13 is a first distance L1.

[0018] The left side cover 16 is disposed opposite to the right side cover 15. The second direction D2 (left-right direction) indicates the direction from the right side cover 15 toward the left side cover 16. The second direction D2 is the positive direction of the Y axis. The left side cover 16 is disposed on the second direction D2 side of the main body 10. In detail, the right side cover 15 connects a first end of the rear wall 14 and a first end of the front part 13. The first end is disposed on the opposite side of the main body 10 to the second direction D2. The left side cover 16 connects a second end of the rear wall 14 and a second end of the front part 13. The second end is disposed on the second direction D2 side of the main body 10. The distance between the left side cover 16 and the right side cover 15 is a second distance L2.

[0019] The upper surface portion 11 is disposed opposite the lower surface portion 12. A third direction D3 indicates a direction from the lower surface portion 12 toward the upper surface portion 11. The third direction D3 is the positive direction of the Z axis. The upper surface portion 11 is disposed on the third direction D3 side of the main body portion 10. The distance between the upper surface portion 11 and the lower surface portion 12 is a third distance L3.

[0020] The main body 10 further has an intake port 17, an exhaust port 18, and a flow passage G. The intake port 17 is formed in an upper surface 11 of the main body 10. The exhaust port 18 is formed in a lower surface 12 of the main body 10. In other words, the exhaust port 18 is disposed below the intake port 17. A flow passage G is formed inside the main body 10, connecting the intake port 17 to the exhaust port 18. The flow passage G communicates from the intake port 17 to the exhaust port 18, and air AR flows through the flow passage G.

[0021] The indoor unit 100 further includes a filter 20, a blower fan 30 (blower section), an air deflector 40, a heat exchanger 50, and a filter cleaning device 70. The filter 20, the blower fan 30, the air deflector 40, and the heat exchanger 50 are disposed in a flow passage G.

[0022] The blower fan 30 circulates the air AR from the suction port 17 to the discharge port 18. Specifically, during operation, the blower fan 30 draws the air AR from the outside into the flow passage G through the suction port 17, and blows the drawn air AR from the flow passage G to the outside through the discharge port 18. The blower fan 30 is, for example, a cross-flow fan. The cross-flow fan is, for example, a substantially cylindrical impeller.

[0023] The airflow direction vane 40 adjusts the blowing direction of the air AR. The airflow direction vane 40 includes an air guide panel, a horizontal louver, a plurality of vertical louvers, and a drive unit. The airflow direction vane 40 is disposed at the air outlet 18. The airflow direction vane 40 moves to be in one of a plurality of states, for example.

[0024] The heat exchanger 50 is disposed above and in front of the blower fan 30. The heat exchanger 50 has, for example, an inverted V shape. The heat exchanger 50 adjusts the properties of the air AR. The properties of the air AR include, for example, the temperature of the air AR. The heat exchanger 50 performs heat exchange. In detail, the heat exchanger 50 transfers thermal energy between the air AR flowing through the flow passage G and the refrigerant supplied from the outdoor unit. For example, the air AR flowing through the flow passage G is cooled by the refrigerant, and the temperature of the air AR flowing through the flow passage G becomes a cooling temperature.

[0025] The filter 20 is disposed above and in front of the heat exchanger 50, and is disposed near the suction port 17. The filter 20 has, for example, a curved plate shape. The filter 20 extends downward the further it is in the first direction D1. In other words, the rear side of the filter 20 is closer to the upper surface portion 11, and the front side of the filter 20 is farther from the upper surface portion 11. The filter 20 collects dust in the indoor air AR that flows into the main body portion 10. Specifically, the filter 20 collects dust from the air AR that passes through the suction port 17.

[0026] The filter cleaning device 70 collects dust captured by the filter 20. The filter cleaning device 70 has a dust box 71 that stores the collected dust. The dust box 71 is provided in a position closer to the air outlet than the electrical box 60 so as to be freely attached and detached. For example, it is disposed below the electrical box 60. In this manner, the dust box 71 can be easily attached and detached, and the inside of the dust box 71 can be efficiently cleaned. The above configuration is also applicable to a filter cleaning device 70 in which the dust box 71 is driven in the X and Z directions of the filter, and in which the electrical box is located on the entire surface of the indoor unit 100 as in this embodiment.

[0027] Next, the electrical component box 60 will be described with reference to Figures 1, 3, 4, and 5. Figure 4 is a perspective view showing the electrical component box 60. As shown in Figures 1, 3, 4, and 5, the indoor unit 100 is equipped with the electrical component box 60. The electrical component box 60 has a control unit 62 and a communication unit 63. Each of the control unit 62 and the communication unit 63 is an example of an "electrical component" that controls air conditioning operation.

[0028] The control unit 62 includes a processor such as a CPU (Central Processing Unit) and a board. The control unit 62 controls the driving units of the blower fan 30 and the louver 40, the filter cleaning device 70, and the like.

[0029] The communication unit 63 performs wireless communication with the operation device. For example, the communication unit 63 communicates with the operation device via a network. The network includes, for example, the Internet, a LAN (Local Area Network), and a public telephone network. The communication performed by the communication unit 63 includes, for example, a network interface controller (NIC) that performs communication according to a predetermined communication protocol, or communication conforming to a communication standard by WiFi. The predetermined communication protocol is, for example, the TCP / IP (Transmission Control Protocol / Internet Protocol) protocol suite (i.e., the Internet Protocol Suite).

[0030] The communication unit 63 may also include a wireless communication module that performs wireless communication. For example, the communication unit 63 is a wireless communication module that performs short-distance wireless communication. The short-distance wireless communication is wireless communication with a communication distance of about several meters to several tens of meters. The short-distance wireless communication is, for example, infrared communication, or communication conforming to a communication standard such as Bluetooth (registered trademark) or ZigBee (registered trademark). The communication conforming to the communication standard such as Bluetooth (registered trademark) is, for example, BLE (Bluetooth (registered trademark) Low Energy).

[0031] The electrical component box 60 further includes a housing 61. The housing 61 accommodates a control unit 62 and a communication unit 63.

[0032] The housing 61 has a plurality of walls 80. Specifically, the plurality of walls 80 include an upper wall 81, a lower wall 82, a front wall 83, a rear wall 84, a right side wall 85, and a left side wall 86. The material of the housing 61 is, for example, a synthetic resin.

[0033] The rear wall 84 is disposed opposite to the front wall 83. The rear wall 84 is disposed on the opposite side of the housing 61 from the first direction D1. In other words, the rear wall 84 is located on the rear wall 14 side. The distance between the rear wall 84 and the front wall 83 is a fourth distance L4. The fourth distance L4 is smaller than the first distance L1.

[0034] The upper wall 81 is disposed opposite the lower wall 82. The upper wall 81 is disposed on the third direction D3 side of the housing 61. In other words, the upper wall 81 is located above the electrical box 60. The distance between the upper wall 81 and the lower wall 82 is a sixth distance L6. The sixth distance L6 is shorter than the third distance L3.

[0035] Housing 61 has guide ribs 95 on its bottom wall 82. Guide ribs 95 are provided to fit with framework 21 of filter 20 in the X direction so that filter 20 can slide easily and smoothly in the direction of the arrow as shown in Figures 4 and 5.

[0036] The left side wall 86 is disposed opposite the right side wall 85. The left side wall 86 is disposed on the second direction D2 side of the housing 61. In detail, the housing 61 extends from the right side cover 15 to the left side cover 16. The distance including the mounting portions 65, 66 for mounting the electrical box 60, that is, the distance between the mounting portion 65 provided on the right side wall 85 and the mounting portion 66 provided on the left side wall 86, is a fifth distance L5. The fifth distance L5 is smaller than the second distance L2. The left side wall 86 and the left side cover 16 are close to each other, and the right side wall 85 and the right side cover 15 are close to each other.

[0037] The electrical box 60 faces the rear wall 14. The front wall 83 is disposed along the front surface 13. In other words, the air inlet 17 is disposed between the rear wall 14 and the electrical box 60. Moreover, the air outlet 18 is disposed between the rear wall 14 and the electrical box 60.

[0038] The air AR sucked in through the suction port 17 flows along at least a part of the wall 80 of the electrical box 60. Specifically, the air AR flows along the upper wall 81 and the rear wall 84.

[0039] The upper part of the electrical box 60 will be described with reference to Figs. 1, 3 and 6. Fig. 6 is a plan view showing the configuration of an air conditioner according to an embodiment of the present invention, and is a view of the air conditioner seen from above. As shown in Figs. 1, 3 and 6, the upper surface part 11 is on the rear side of the center of the front surface part 13, and a region 11' corresponding to the X direction and / or Y direction of the electrical box 60 is cut out. As a result, the upper part of the rear side of the electrical box 60 is open. In other words, the electrical box 60 is exposed without being covered by the upper surface part 11 or the front surface part 13 of the main body part 10. In this way, heat generated by the electrical box 60 can be easily released upward, and a temperature rise in the electrical box 60 can be suppressed. Since a temperature rise in the electrical box 60 can be suppressed, damage to electronic components and the like provided in the electrical box 60 can be reduced, which in turn extends the life of the components and the air conditioner. On the other hand, the upper part of the front surface part 13 closes the front side and the side side. By configuring in this way, the airtightness of the main body part 10 can be ensured.

[0040] 3, it is preferable that the rear side of the electrical box 60 (the side opposite to the first direction D1) contacts the flow passage G. A rear wall 84 on the rear side of the electrical box 60 is in a position that contacts the circulating air AR. This can further suppress the rise in temperature inside the electrical box 60, thereby extending the life of the components and the air conditioner.

[0041] Next, the electrical box 60 will be described in detail with reference to Figures 7 and 8. Figure 7 is a cross-sectional view taken along line BB in Figure 2. Figure 8 is an enlarged cross-sectional view of the electrical box 60 shown in Figure 7. The electrical box 60 shown in Figure 8 is inverted symmetrically with respect to the Z axis from the electrical box 60 shown in Figure 7. As shown in Figure 8, the electrical box 60 is further provided with openings (91, 92). The openings (91, 92) include an intake hole 91 and an exhaust hole 92.

[0042] The air intake hole 91 and the exhaust hole 92 are provided in the wall 80. Specifically, the air intake hole 91 is disposed in the upper wall 81, which is the upper surface of the electrical box 60. Moreover, the exhaust hole 92 is disposed in the rear wall 84, which is the rear surface of the electrical box 60. As a result, the air AR flows from the outside of the housing 61 to the inside of the housing 61 through the air intake hole 91. Moreover, the air AR flows from the inside of the housing 61 to the outside of the housing 61 through the exhaust hole 92. In other words, the air AR sucked in through the air intake hole 91 changes its flow direction and is discharged from the exhaust hole 92. In this way, by providing the openings (91, 92) in the electrical box 60, it is possible to further suppress the temperature rise inside the electrical box 60, thereby extending the life of the parts and the air conditioner.

[0043] The indoor unit 100 further includes a sensor 200. The sensor 200 detects physical quantities related to the air in the room. Specifically, a temperature and humidity sensor detects temperature and humidity. The sensor 200 is a temperature and humidity sensor.

[0044] The sensor 200 is housed in the upper part inside the housing 61. The sensor 200 is electrically connected to the control unit 62. Specifically, the sensor 200 is connected to the control unit 62 via wiring (not shown) or the like. The sensor 200 outputs information including the temperature and humidity to the control unit 62.

[0045] In detail, the sensor 200 includes a sensor substrate 201 and a sensor element 202. The sensor substrate 201 has a substantially flat plate shape. The sensor element 202 is provided on the sensor substrate 201.

[0046] The sensor board 201 extends further downward as it moves in the opposite direction to the first direction D1. Specifically, the sensor board 201 is disposed so as to connect the flow of the air AR sucked in from the intake hole 91 and the flow of the air AR exhausted from the exhaust hole 92. As a result, the air AR flows along the sensor board 201. This reduces air pressure loss. In addition, since the top of the electrical equipment box 60 is open, it is possible to suppress a rise in temperature inside the electrical equipment box, improving the detection accuracy of the sensor element 202 and enabling the sensor 200 to correctly sense the temperature.

[0047] Furthermore, by housing the sensor 200 inside the housing 61 and arranging it facing the flow path G, a thermistor holder (not shown), which has conventionally been a suction resistance, becomes unnecessary, leading to improved air blowing efficiency. Furthermore, there is also a method of detecting temperature and humidity using a slight air flow outside the suction flow path G, which has the problem of poor temperature and humidity tracking, but this problem can also be solved by the above configuration.

[0048] Furthermore, the electrical box 60 is disposed on the first direction D1 side of the indoor unit 100. As a result, it is possible to detect the properties of the air close to the center of the room. Therefore, it is possible to perform air conditioning control that is more in line with the user's wishes.

[0049] Furthermore, the intake hole 91 is disposed in the upper wall 81, and the exhaust hole 92 is disposed in the rear wall 84. As a result, the intake hole 91 of the electrical equipment box 60 faces the flow passage G, so that the amount of air AR supplied to the housing 61 can be increased. This improves the detection accuracy of the sensor element 202. Also, the air flow passage inside the electrical equipment box 60 can be made compact.

[0050] The flow of the air AR will be described in detail. The air AR is sucked into the inside of the main body 10 from the suction port 17. For example, the air AR passes through the suction port 17 substantially diagonally downward and substantially diagonally backward.

[0051] A part of the air AR drawn into the main body 10 comes into contact with the upper wall 81. As a result, a part of the air AR is drawn into the electrical box 60 through the air intake hole 91. For example, the air AR passes through the air intake hole 91 diagonally downward and diagonally backward. The air AR comes into contact with the sensor element 202. The sensor element 202 detects temperature and humidity.

[0052] The air AR that comes into contact with the sensor element 202 is blown out of the electrical equipment box 60 through the exhaust hole 92. For example, the air AR passes through the exhaust hole 92 diagonally substantially downward and diagonally backward. In other words, since the sensor board 201 is disposed so as to connect the flow of the air AR sucked in through the intake hole 91 and the flow of the air AR exhausted through the exhaust hole 92, the angle at which the direction of the air AR passing through the electrical equipment box 60 changes can be made small. Therefore, the pressure loss of the air AR can be reduced.

[0053] The air AR that has passed through the exhaust hole 92 passes through the filter 20, and dust is collected from the air AR. The air AR then passes through the heat exchanger 50, where heat exchange takes place. The blower fan 30 then sucks in the air AR and blows out the sucked air AR. The air AR is blown out of the main body 10 from the air outlet 18.

[0054] Furthermore, a plurality of openings, suction holes 91 and exhaust holes 92, may be provided in the electrical equipment box, and in consideration of suppressing a rise in temperature inside the electrical equipment box 60, the opening area can be made large.

[0055] Continuing with reference to Fig. 3 to Fig. 8, the electrical box 60 will be described in detail. The multiple container walls 80 further include a first inclined wall 87. The first inclined wall 87 exists between the upper wall 81 and the rear wall 84. The first inclined wall 87 may be a flat surface or a curved surface. For example, the first inclined wall 87 forms an obtuse angle with each of the upper wall 81 and the rear wall 84. As a result, the air flow path can be made smooth.

[0056] The plurality of connected container walls 80 further include a second inclined wall 88. The second inclined wall 88 is disposed between the bottom wall 82 and the rear wall 84. The second inclined wall 88 extends further downward in the first direction D1. In other words, the second inclined wall 88 faces the filter 20. As a result, it is no longer necessary to dispose the electrical box 60 in front of the filter 20, and the first distance L1 can be reduced.

[0057] Next, the indoor unit 100 will be described with reference to Fig. 9. Fig. 9 is a perspective view showing the indoor unit 100 in an open state. As shown in Fig. 9, the front portion 13 has a front panel 19. The electrical component box 60 is housed inside the front panel 19. At least a portion of the upper side of the front panel 19 is open. In other words, even if the air conditioner 1000 has the front panel 19, the upper part of the electrical component box 60 is open. In this way, it is possible to suppress a rise in temperature inside the electrical component box. In addition to the front panel 19, the indoor unit 100 also has a side cover.

[0058] Moreover, the front panel 19 has a substantially flat plate shape. The front panel 19 is movable between a first position and a second position. The first position is a position where the front panel 19 faces the front wall 83 of the electrical box 60. The second position is a position where the front panel 19 opens the front wall 83 of the electrical box 60. In detail, the front panel 19 has a rotating shaft portion at an upper portion. The rotating shaft portion extends along the second direction D2. For example, a user moves the front panel 19 to the second position when performing maintenance.

[0059] As described above, according to the air conditioner 1000 according to the embodiment of the present invention, it is possible to suppress a rise in temperature inside the electrical component box.

[0060] Although the embodiments and examples of the present invention have been described in detail above, those skilled in the art will easily understand that many modifications are possible without substantially departing from the novel features and effects of the present invention. Therefore, all such modifications are intended to be included within the scope of the present invention.

[0061] For example, a term described at least once in the specification or drawings together with a different term having a broader or similar meaning may be replaced with that different term anywhere in the specification or drawings. In addition, the configuration and operation of the air conditioner are not limited to those described in each embodiment and each example of the present invention, and various modifications are possible. [Explanation of symbols]

[0062] 10 Main body 11 Top part 11' Area of ​​the electrical box in the X and / or Y directions 17 Intake port 18 Air outlet 19 Front Panel 20 Filters 30 Blower fan (blower section) 60 Electrical box 61 Case 62 Control unit (electrical components) 65, 66 (Electrical box) mounting section 70 Filter cleaning device 71 Dustbin 84 Back wall 91 Air intake (opening) 92 Exhaust hole (opening) 95 Guide Rib 100 Indoor unit 200 Sensors 1000 Air Conditioner AR Air G Distribution path

Claims

1. A main body portion having an inlet, an outlet, and a flow passage communicating from the inlet to the outlet; a blower section that is housed in the main body section and that circulates air through the flow passage; an electrical box having electrical components; Equipped with The upper part of the electrical equipment box is open, A rear side of the electrical box is in contact with the flow passage, An opening is provided on the top surface and the back surface of the electrical box, an opening provided on an upper surface of the electrical equipment box is an air intake hole that allows a portion of the air sucked into the main body through the suction port to flow into the electrical equipment box; the opening provided on the rear surface of the electrical equipment box is an exhaust hole that allows the air that has flowed in through the intake hole to flow out from inside the electrical equipment box to the flow passage, Air conditioner.

2. the electrical component includes a sensor having a sensor element provided on a sensor substrate, the sensor substrate allows air flowing in from the intake hole to flow along the sensor substrate to the exhaust hole, The sensor element detects air flowing along the sensor substrate by contacting the air. The air conditioner according to claim 1.

3. the electrical box has an inclined wall between the upper surface and the rear surface, the inclined wall inclining downward toward the rear surface side of the electrical box, an air flow path from the air intake hole to the air exhaust hole inside the electrical equipment box is inclined downward toward a rear surface side of the electrical equipment box; 3. The air conditioner according to claim 1 or 2.

4. It also has a front panel, The air conditioner according to any one of claims 1 to 3, wherein the electrical component box is housed inside the front panel, and at least a portion of an upper side of the front panel is open.

5. The air conditioner further includes a filter disposed at the suction port and configured to capture dust in the air flowing into the main body, and a filter cleaning device configured to collect the dust captured by the filter, The filter cleaning device has a dust box for storing collected dust, The air conditioner according to any one of claims 1 to 4, wherein the dust box is detachably provided at a position closer to the air outlet than the electrical component box.

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