air conditioner

Abstract

This air conditioner (1) comprises: a housing (20) accommodating a heat exchanger (11) and a blower (12) therein; a control box (13) which is accommodated inside the housing (20) and to which first wiring (351) inside the housing (20) is connected; a terminal block attachment part (36) to which is attached a terminal block (35) to which the first wiring (351) and second wiring (352) outside of the housing (20) are connected, the terminal block attachment part being removably fixed to the control box (13); and a support component (40) that is removably fixed to the terminal block attachment part (36) and that is for supporting the removed terminal block attachment part (36), wherein the support component (40) has a first portion (42) fixed to the terminal block attachment part (36) removed from the control box (13), and a second portion (43) that is positioned opposite to the first portion (42) and is fixed to the housing (20).

Description

Technical Field

[0001] The present disclosure relates to an air conditioner, and particularly to the structure of an air conditioner having a control box.

Background Art

[0002] In an air conditioner, a structure that enables easy maintenance of the electrical components housed in the control box is desired. Patent Document 1 discloses a configuration in which a terminal block mounting portion for attaching a terminal block to the control box is detachably fixed to the control box. With the configuration of Patent Document 1, after the terminal block mounting portion is removed from the control box, the control box can be pulled forward.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] With the configuration of Patent Document 1, although access to the electrical components housed in the control box is facilitated, the terminal block mounting portion removed from the control box must be supported by the operator, and the workability during maintenance cannot be said to be good.

[0005] The present disclosure has been made to solve the above problems, and provides an air conditioner with improved workability during maintenance.

Means for Solving the Problems

[0006] The air conditioner of this disclosure comprises a housing containing a heat exchanger and a blower, a control box housed inside the housing and connected to a first wiring harness inside the housing, a terminal block mounting portion to which the first wiring harness and a second wiring harness outside the housing are connected, and which is detachably fixed to the control box, and a support component detachably fixed to the terminal block mounting portion for supporting the removed terminal block mounting portion, wherein the support component has a first portion fixed to the terminal block mounting portion removed from the control box, and a second portion located opposite the first portion and fixed to the housing. The terminal block mounting portion is fastened together with the first screw that secures the terminal block mounting portion to the control box. . Furthermore, the air conditioner of this disclosure comprises a housing containing a heat exchanger and a blower, a control box housed inside the housing and to which first wiring inside the housing is connected, a terminal block mounting portion to which a terminal block to which the first wiring and second wiring outside the housing is connected is attached and is detachably fixed to the control box, a support component detachably fixed to the terminal block mounting portion and for supporting the removed terminal block mounting portion, and a side panel covering the side of the control box, wherein the support component has a first part fixed to the terminal block mounting portion removed from the control box, and the first part The side panel has a second portion located opposite to the first portion and fixed to the housing, and the side panel has a front panel that covers the front of the side and is openable and closable, and a rear panel that covers the rear of the side, the front panel has a projection formed on the rear end face of the front panel, the rear panel has a bend formed on the front end face of the rear panel and engages with the projection of the front panel when it is open, the projection has a U-shaped notch formed in it, and the bend has a stepped screw that is inserted into the notch when the front panel is open. [Effects of the Invention]

[0007] According to the air conditioner of this disclosure, the removed terminal block mounting portion is supported by a support component having a first portion fixed to the removed terminal block mounting portion and a second portion fixed to the housing. Therefore, it is no longer necessary for the worker to support the terminal block mounting portion, improving work efficiency during maintenance. [Brief explanation of the drawing]

[0008] [Figure 1] This is a circuit diagram showing an air conditioner according to this embodiment. [Figure 2] This is a perspective view showing the indoor unit according to this embodiment. [Figure 3] This is a perspective view showing the indoor unit according to this embodiment with the front panel removed. [Figure 4] This is a perspective view showing the secondary side region of the heat exchanger according to this embodiment. [Figure 5] This is a perspective view showing the control box according to this embodiment. [Figure 6] This is a perspective view of the control box according to this embodiment, showing it with the cover removed. [Figure 7] This is an enlarged perspective view of the control box according to this embodiment. [Figure 8]In the indoor unit according to the present embodiment, it is a perspective view showing a state in which the control box is pulled out. [Figure 9] In the indoor unit according to the present embodiment, it is a perspective view showing a state in which the left side panel is opened. [Figure 10] It is a perspective view of a support part according to the present embodiment. [Figure 11] It is a perspective view showing a state in which the support part according to the present embodiment is fixed to the terminal block mounting part. [Figure 12] It is a perspective view showing a state in which the terminal block mounting part is supported by the support part according to the present embodiment. [Figure 13] It is a side view showing a state in which the terminal block mounting part according to the present embodiment is inverted. [Figure 14] It is a transparent perspective view showing a state in which the terminal block mounting part according to the present embodiment is supported by the support part. [Figure 15] It is a schematic view of a state in which the terminal block mounting part according to the present embodiment is supported by the support part, as viewed in the horizontal direction of the terminal block mounting part. [Figure 16] It is a perspective view of a state in which the terminal block mounting part according to the present embodiment is supported by the support part, as viewed obliquely from above. [Figure 17] In the control box according to the present embodiment, it is a perspective view showing the opened left side panel. [Figure 18] It is a perspective view showing the front panel of the left side panel according to the present embodiment. [Figure 19] It is a perspective view showing the rear panel of the left side panel according to the present embodiment. [Figure 20] It is a partially enlarged perspective view of the left side panel according to the present embodiment.

Mode for Carrying Out the Invention

[0009] <Hereinafter, embodiments of the air conditioner 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. Also, in the following drawings including FIG. 1, the size relationships of the respective components may be different from the actual ones. Further, in the following description, terms indicating directions are appropriately used for easy understanding of the present disclosure, but this is for explaining the present disclosure, and these terms do not limit the present disclosure. Examples of the terms indicating directions include "up", "down", "right", "left", "front", or "rear".

[0010] Embodiment. FIG. 1 is a circuit diagram showing an air conditioner 1 according to the present embodiment. The air conditioner 1 is a device that adjusts the air in the air-conditioning target space, and as shown in FIG. 1, includes an outdoor unit 2 and an indoor unit 3. The outdoor unit 2 is provided with, for example, a compressor 6, a flow path switching device 7, an outdoor heat exchanger 8, an outdoor blower 9, and an expansion part 10. The indoor unit 3 is provided with, for example, a heat exchanger 11, a blower 12, and a control box 13.

[0011] The compressor 6, the flow path switching device 7, the outdoor heat exchanger 8, the expansion part 10, and the heat exchanger 11 are connected by a refrigerant pipe 5 to form a refrigerant circuit 4. The compressor 6 sucks in a refrigerant in a low-temperature and low-pressure state, compresses the sucked refrigerant into a high-temperature and high-pressure state, and discharges it. The compressor 6 is, for example, an inverter compressor with capacity control. The flow path switching device 7 switches the direction in which the refrigerant flows in the refrigerant circuit 4, and is, for example, a four-way valve. The outdoor heat exchanger 8 exchanges heat between, for example, outdoor air and the refrigerant. The outdoor heat exchanger 8 acts as a condenser during cooling operation and as an evaporator during heating operation. The expansion part 10 is a pressure reducing valve or an expansion valve that reduces the pressure of the refrigerant and expands it. The expansion part 10 is, for example, an electronic expansion valve whose opening degree is adjusted.

[0012] The heat exchanger 11 exchanges heat between, for example, indoor air and the refrigerant. The heat exchanger 11 acts as an evaporator during cooling operation and as a condenser during heating operation. The blower 12 is a device that sends indoor air to the heat exchanger 11.

[0013] (Operating mode, Cooling operation) Next, the operating modes of the air conditioner 1 will be explained. First, the cooling operation will be explained. In cooling operation, the refrigerant drawn into the compressor 6 is compressed by the compressor 6 and discharged in a high-temperature, high-pressure gaseous state. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 6 passes through the flow path switching device 7 and flows into the outdoor heat exchanger 8, which acts as a condenser. In the outdoor heat exchanger 8, it exchanges heat with the outdoor air supplied by the outdoor fan 9, condenses, and liquefies. The condensed liquid refrigerant flows into the expansion section 10, where it expands and depressurizes to become a low-temperature, low-pressure gas-liquid two-phase refrigerant. The gas-liquid two-phase refrigerant then flows into the heat exchanger 11, which acts as an evaporator. In the heat exchanger 11, it exchanges heat with the indoor air supplied by the fan 12, evaporates, and gasifies. At this time, the indoor air is cooled, and cooling is performed in the room. The evaporated refrigerant, in a low-temperature, low-pressure gaseous state, passes through the flow path switching device 7 and is drawn into the compressor 6.

[0014] (Operating mode, heating operation) Next, the heating operation will be explained. In heating operation, the refrigerant drawn into the compressor 6 is compressed by the compressor 6 and discharged in a high-temperature, high-pressure gaseous state. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 6 passes through the flow path switching device 7 and flows into the heat exchanger 11, which acts as a condenser. In the heat exchanger 11, it exchanges heat with the indoor air supplied by the blower 12, condenses, and liquefies. At this time, the indoor air is heated, and heating is performed in the room. The condensed liquid refrigerant flows into the expansion section 10, where it expands and depressurizes to become a low-temperature, low-pressure gas-liquid two-phase refrigerant. The gas-liquid two-phase refrigerant then flows into the outdoor heat exchanger 8, which acts as an evaporator. In the outdoor heat exchanger 8, it exchanges heat with the outdoor air supplied by the outdoor blower 9, evaporates, and gasifies. The evaporated low-temperature, low-pressure gaseous refrigerant passes through the flow path switching device 7 and is drawn into the compressor 6.

[0015] Furthermore, the air conditioner 1 does not necessarily have to have a flow path switching device 7. In this case, the air conditioner 1 will be either a cooling-only unit or a heating-only unit.

[0016] (Indoor unit 3) Figure 2 is a perspective view showing the indoor unit 3 according to this embodiment, and Figure 3 is a perspective view showing the indoor unit 3 according to this embodiment with the front panel 21 removed. As shown in Figures 2 and 3, the indoor unit 3 comprises a housing 20 that constitutes the outer casing, a heat exchanger 11, a blower 12, a drain pan 24 for collecting condensed water from the heat exchanger 11, and a control box 13. The indoor unit 3 takes in air from an intake port 21a formed in the front panel 21 of the housing 20 in the direction indicated by the white arrows in Figures 2 and 3. The heat exchanger 11 is located inside the intake port 21a.

[0017] Inside the housing 20, an air passage is formed from an intake port 21a formed in the front panel 21 to an outlet port 23a formed in the top panel 23. The air taken into the housing 20 passes through the heat exchanger 11, is harmonized, and is blown out from the outlet port 23a formed in the top panel 23 of the housing 20 in the direction of the white arrow in Figure 3. Both sides of the housing 20 are side panels 22, and the back of the housing 20 is a back panel 25. In the following description, the side of the housing 20 where the front panel 21 is located will be referred to as the front side, and the side opposite the front panel 21 will be referred to as the back side. The left and right sides of the housing 20 correspond to the left and right when the housing 20 is viewed facing the front panel 21. That is, the x-direction, which is the positive direction of the x-axis, is to the right, and the opposite direction along the x-axis is to the left. The direction parallel to the plane defined by the x and z axes is called the horizontal direction, and the y-direction is called upward. The z-direction will be referred to as the first direction.

[0018] The heat exchanger 11 is located behind the intake port 21a when viewed from the side where the front plate 21 of the housing 20 is located. The blower 12 includes two blowers 12 and is located above the heat exchanger 11, between the outlet 23a and the heat exchanger 11. The blower 12 has a fan 12b (see Figure 4) and a motor 12c (see Figure 4) in a fan casing 12a, and the motor 12c is inverter controlled to drive the fan 12b. Air flowing in from the intake port 21a passes through the heat exchanger 11, which is inclined inside the housing 20, and flows upward inside the housing 20. The air that has passed through the heat exchanger 11 flows into the fan casing 12a of the blower 12 and is blown out from the outlet 23a by the fan 12b. The drain pan 24 is positioned to collect drain water that flows down below the heat exchanger 11, which is inclined inside the housing 20. In this embodiment, the fan 12b is configured as a sirocco fan.

[0019] Figure 4 is a perspective view showing the secondary region of the heat exchanger 11 according to this embodiment. Here, the secondary region of the heat exchanger 11 refers to the region inside the housing 20 where air that has passed through the heat exchanger 11 exists. The primary region of the heat exchanger 11 refers to the region where air exists before passing through the heat exchanger 11. That is, the primary region is the region upstream of the heat exchanger 11 in the air passage inside the housing 20. The secondary region is the region downstream of the heat exchanger 11 in the air passage inside the housing 20.

[0020] In the secondary region of the heat exchanger 11, a motor 12c of a blower 12, a fan 12b directly connected to the motor 12c, and a fan casing 12a covering the fan 12b and fixed to the top plate 23 are installed. In this embodiment, two blowers 12 are arranged side by side in the x direction. The control box 13 is arranged alongside these blowers 12 in the horizontal direction, i.e., along the x-axis. Because the control box 13 is located to the side of the blowers 12, when the front plate 21 is removed for maintenance around the blowers 12, it is not necessary to remove the control box 13 from the air conditioner 1, improving the workability of maintenance. In addition, by protecting the wiring outlet (not shown) and motor 12c of the control box 13, cleaning around the blowers 12 can be easily performed. In this embodiment, the fan casing 12a is configured to be removable by dividing it in the front-to-back direction of the air conditioner 1, so maintenance such as cleaning the fan 12b inside is possible. Here, the front-to-back direction of the air conditioner 1 is the direction along the z-axis as shown in Figure 2.

[0021] A drain pan 24 is located in the primary side region of the heat exchanger 11. The heat exchanger 11 and the drain pan 24 are prone to the accumulation of dust and debris due to condensed water. Therefore, the primary side region of the heat exchanger 11 requires frequent cleaning. If the control box 13 is installed in the indoor unit 3 above the drain pan 24 in the primary side region of the heat exchanger 11, the control box 13 will obstruct the cleaning of the heat exchanger 11 and the drain pan 24, making the cleaning process complicated. Furthermore, if a large amount of cleaning water is applied to the control box 13 during the cleaning process, water will enter the inside of the control box 13. This can cause the air conditioner 1 to malfunction, so the control box 13 needs to be protected during cleaning. In this embodiment, the control box 13 is located in the secondary side region rather than the primary side region, which requires frequent cleaning, making maintenance work on the air conditioner 1 easier. In addition, by locating the control box 13 in the secondary side region, the cooling efficiency can also be increased. Furthermore, since the control box 13 has a structure free of protrusions, it is possible to prevent injuries to cleaning professionals during maintenance work on the secondary side of the heat exchanger 11, which is a cleaning area.

[0022] (Control box 13) Figure 5 is a perspective view showing the control box 13 according to this embodiment, and Figure 6 is a perspective view showing the control box 13 according to this embodiment with the cover 31 removed. As shown in Figure 5, the control box 13 has an L-shape when viewed from the top side of the indoor unit 3. The control box 13 has an L-shape, and the area on the front side in the z direction is wider in the x direction than the area on the back side in the z direction. Therefore, in the control box 13, circuit boards that are operated on-site where the air conditioner 1 is installed are placed on the front side of the control box 13, and circuit boards that are not operated on-site are placed on the back side. By arranging the circuit boards in this way inside the control box 13, it is possible to miniaturize the control box 13 while securing workspace on-site. In other words, the air conditioner 1 can save space by reducing the placement of the control box 13 within the housing 20. As shown in Figure 6, in this embodiment, the terminal block 35 is located in the front area in the z direction of the control box 13. The terminal block 35 is connected to a first wiring 351 that connects to each circuit board and a second wiring 352 (see Figure 13) that connects to the outside of the control box 13.

[0023] A heat sink 33 is installed on the side 32 of the control box 13 facing the blower 12. Because the heat sink 33 is installed on the side 32 closest to the blower 12, a portion of the air flowing toward the blower 12 can be directed toward the heat sink 33. This allows the inverter board (not shown) installed inside the control box 13 to be cooled. In addition, the heat sink 33 can be cleaned when cleaning the area around the blower 12. Therefore, the reduction in cooling effect due to the accumulation of dirt on the heat sink 33 can be suppressed. The box body 30 is, for example, a box made by combining sheet metal members. The box body 30 has silicone sealant filled in the gaps around the heat sink 33 to prevent water from entering. This allows the heat sink 33, which is installed on the outside of the box body 30 made by combining sheet metal members, to be cleaned. The box body 30 has an opening on the first direction side.

[0024] A slide rail 34, which constitutes a sliding structure, is provided at the bottom of the control box 13. The control box 13 can slide in the front-to-back direction of the housing 20, that is, along the z-axis, due to the sliding structure.

[0025] The terminal block mounting section 36 is housed inside the control box 13. The terminal block mounting section 36 is screw-fastened to the box body 30 and is configured to be detachable from the box body 30. The terminal block mounting section 36 is a plate-shaped member to which the terminal block 35 is attached. The terminal block 35 connects the first wiring 351 extending from the circuit boards inside the control box 13 to the second wiring 352, which is on-site wiring on the outside of the enclosure 20. The terminal block mounting section 36 is provided with multiple wiring entry ports 38 that protrude downward. The second wiring 352 is inserted through the wiring entry ports 38 and taken into the interior of the control box 13.

[0026] Figure 7 is an enlarged perspective view of the control box 13 according to this embodiment. As shown in Figure 7, a support component 40 is fixed to the control box 13. The support component 40 is a component that fixes and supports the terminal block mounting portion 36 to the housing 20 when the terminal block mounting portion 36 is removed from the box body 30 of the control box 13. The support component 40 is detachably fixed to the control box 13.

[0027] The support component 40 is fixed to the control box 13 by fastening together with the terminal block mounting portion 36 using the first screw 41. The support component 40 is fixed so as to straddle, for example, the left side panel 37 and the terminal block mounting portion 36. The position in which the support component 40 is fixed is not limited, but it is desirable that it be fixed to the front side of the control box 13 so that maintenance workers can easily remove the support component 40.

[0028] Figure 8 is a perspective view showing the indoor unit 3 according to this embodiment with the control box 13 pulled out. As shown in Figure 8, the control box 13 can be pulled out in the forward direction from the housing 20 with the front panel 21 removed.

[0029] By designing the control box 13 to slide in the front-to-back direction within the housing 20, workers can perform maintenance on the circuit board without removing the control box 13 from the indoor unit 3. Furthermore, when the front panel 21 of the housing 20 is removed and the inside of the housing 20 is viewed, the area hidden by the control box 13 can be cleaned. Additionally, when the control box 13 is pulled forward in the z-direction, the control box 13 can be secured by tightening the screws (not shown) on the slide rail 34, which were previously loosened. Therefore, there is no need to prepare a separate stand or other device to secure the control box 13 during maintenance.

[0030] When the control box 13 is pulled out, the terminal block mounting portion 36 is removed from the box body 30 of the control box 13. Therefore, the path for pulling out the control box 13 is not obstructed by the terminal block mounting portion 36, and the control box 13 can be pulled out smoothly.

[0031] Figure 9 is a perspective view showing the indoor unit 3 according to this embodiment with the left side panel 37 open. As shown in Figure 9, the left side panel 37 is screwed to the box body 30, and when the left side panel 37 is removed, the control box 13 is opened. By pulling out the control box 13 and opening the left side of the control box 13, access to the circuit boards inside the control box 13 is made easier, improving the workability of maintenance of the control box 13. A sealing material (not shown) is attached to the mating surface between the terminal block mounting portion 36 of the control box 13 and the box body 30, the mating surface between the left side panel 37 and the box body 30, and the mating surface between the cover 31 and the box body 30. The sealing material prevents water from entering the inside of the control box 13 even if water splashes on the control box 13 when cleaning the blower 12. A rubber bushing shaped to enclose the wiring is placed in the wiring intake port 38 of the control box 13. By securing the rubber bushing through which the wiring passes from the outside with a binding member, water and debris from the wiring intake 38 are prevented from entering the control box 13.

[0032] Figure 10 is a perspective view of the support component 40 according to this embodiment. As shown in Figure 10, the support component 40 is a plate-shaped member composed of a first portion 42, a second portion 43, and a connecting portion 44 that connects the first portion 42 and the second portion 43. The connecting portion 44 extends in a direction intersecting the first portion 42 and the second portion 43, for example, in the y direction. The first portion 42 and the second portion 43 extend from both edges of the connecting portion 44 in a direction parallel to each other and in opposite directions, for example, in the x direction. The support component 40 has a Z-shaped cross-section formed by the first portion 42, the second portion 43, and the connecting portion 44. The support component 40 is formed, for example, by bending a rectangular sheet metal. A first daruma hole 45 is formed in the first portion 42. A second daruma hole 46 is formed in the second portion 43. The first Daruma hole 45 is a hole in which a small diameter hole and a large diameter hole are connected in the x direction, for example, when the first part 42 extends in the z direction from the connecting part 44. The second Daruma hole 46 is a hole in which a small diameter hole and a large diameter hole are connected in the x direction, for example, when the second part 43 extends in the z direction from the connecting part 44.

[0033] Figure 11 is a perspective view showing the support component 40 according to this embodiment fixed to the terminal block mounting portion 36. Figure 12 is a perspective view showing the terminal block mounting portion 36 being supported by the support component 40 according to this embodiment. The procedure for supporting the terminal block mounting portion 36 with the support component 40 will be explained using Figures 11 and 12. The terminal block mounting portion 36 is removed from the control box 13 before the control box 13 is pulled out during maintenance work.

[0034] As shown in Figures 11 and 12, when the terminal block mounting portion 36 is removed from the control box 13, the support component 40 is removed first. Specifically, the first screw 41 that secures the support component 40 to the box body 30 of the control box 13 is released. The first screw 41 is part of the fixing screws that secure the terminal block mounting portion 36 to the box body 30. Next, the first screw 41 is temporarily fastened to the front end of the terminal block mounting portion 36.

[0035] Next, the first keyhole 45 of the first part 42 is hooked onto the first screw 41, and the support part 40 is temporarily fixed to the terminal block mounting part 36. Then, the first screw 41 is tightened, and the support part 40 is fixed to the terminal block mounting part 36.

[0036] Next, the fixing screws securing the terminal block mounting portion 36 to the box body 30 are released, and the terminal block mounting portion 36, along with the support component 40, is removed from the box body 30. For example, there are two fixing screws located on the rear side of the terminal block mounting portion 36 on the box body 30.

[0037] Next, the second keyhole 46 of the second part 43 of the support component 40 is hooked onto the second screw 47. The second screw 47 is temporarily fastened to the frame that makes up the housing 20. The second screw 47 is located below the slide rail 34 of the control box 13.

[0038] Next, the support component 40 is temporarily fixed to the housing 20. Specifically, the terminal block mounting portion 36 is inverted vertically, so that the support component 40 is positioned on the housing 20 side relative to the terminal block mounting portion 36 and temporarily fixed in place. Next, the second screw 47 is fastened, and the terminal block mounting portion 36 is fixed to the housing 20 in its inverted state by the support component 40.

[0039] As a result, the terminal block mounting section 36, which has been removed from the box body 30, is supported by the support component 40 on the housing 20. The terminal block mounting section 36, which has been removed from the box body 30, will not fall and will not need to be held by the worker, improving the workability of maintenance. In addition, since the support component 40 for holding the terminal block mounting section 36 does not protrude into the cleaning area on the outside of the control box 13, it is possible to prevent injuries to workers during cleaning work.

[0040] Figure 13 is a side view showing the terminal block mounting portion 36 in an inverted state according to this embodiment. As shown in Figure 13, the terminal block mounting portion 36 is rotated and inverted in the direction of arrow A, that is, in the direction in which the upper part is tilted forward. After that, the control box 13 is pulled out in the direction of the white arrow B. By removing the terminal block mounting portion 36 and hooking it onto the support component 40, the terminal block mounting portion 36 is moved out of the pull-out path of the control box 13 and fixed in a position where the terminal block mounting portion 36 does not obstruct the pull-out operation of the control box 13.

[0041] Since the second wiring 352, which is the on-site wiring, is connected to the terminal block mounting section 36, if the terminal block mounting section 36 is not inverted, and there is no slack in the on-site wiring, the terminal block mounting section 36 cannot be freely moved after removal, and it will also hinder the pulling-out work. By inverting the terminal block mounting section 36 downwards, the slack in the on-site wiring is shortened, and the pulling-out work of the control box 13 becomes easier.

[0042] When the terminal block mounting section 36 is removed from the control box 13 and reversed, the second wiring 352 extends downwards from the control box 13. Since the second wiring 352, which is local wiring, passes below the path through which the control box 13 is pulled out, the second wiring 352 does not obstruct the operation of pulling out the control box 13.

[0043] Figure 14 is a transparent perspective view showing the terminal block mounting portion 36 according to this embodiment being supported by the support component 40. Figure 15 is a schematic view of the terminal block mounting portion 36 according to this embodiment, as seen horizontally, showing the terminal block mounting portion 36 being supported by the support component 40. Figure 16 is a perspective view of the terminal block mounting portion 36 according to this embodiment, as seen from diagonally above, showing the terminal block mounting portion 36 being supported by the support component 40.

[0044] As shown in Figures 14, 15, and 16, the support component 40 has a Z shape. In the first portion 42, the first screw 41 is inserted into the first keyhole 45 from the connecting portion 44 side and fastened. Therefore, when hooking the first screw 41 into the first keyhole 45, the worker can see the first screw 41 that has been temporarily fastened from above while hooking it, and after the first screw 41 is hooked, it can be screwed in from above with a screwdriver, making the work easy.

[0045] Furthermore, in the second section 43, the second screw 47 is inserted into the second keyhole 46 from the connecting section 44 side and fastened. Also, when the terminal block mounting section 36 is inverted and the second screw 47 is hooked into the second keyhole 46, the worker can visually confirm the temporarily fastened second screw 47 from above while hooking it. After the second screw 47 is hooked, it can be screwed in from above with a screwdriver.

[0046] Because the support component 40 has a Z shape, the direction of movement of the first screw 41 and the direction of movement of the second screw 47 are opposite to each other, thus ensuring visibility during maintenance and improving work efficiency.

[0047] Figure 17 is a perspective view showing the left side panel 37 in the open state in the control box 13 according to this embodiment. As shown in Figure 17, the left side panel 37 is composed of a front panel 71 and a rear panel 72. Of the left side panel 37, the front panel 71 is removable. The front panel 71 is fixed to the rear panel 72 by screws, and is also fixed to the top panel and bottom panel (not shown) of the box body 30. The front panel 71 can be removed from the box body 30 by releasing the screws from the outside of the box body 30. When the front panel 71 is removed from the box body 30, the front end rotates 90 degrees around the rear end to open.

[0048] Figure 18 is a perspective view showing the front panel 71 of the left side panel 37 according to this embodiment. Figure 19 is a perspective view showing the rear panel 72 of the left side panel 37 according to this embodiment. Figure 20 is a partially enlarged perspective view of the left side panel 37 according to this embodiment. As shown in Figures 18, 19, and 20, the front panel 71 has a projection 711 formed thereon, and the rear panel 72 has a bent portion 722 formed thereon.

[0049] The projection 711 of the front panel 71 and the bent portion 722 of the rear panel 72 are structured to engage with each other. When the front panel 71 is in the open position, the projection 711 hooks onto the bent portion 722 of the rear panel 72, keeping it open. Maintaining the open position of the front panel 71 eliminates the need for the worker to hold the removed front panel 71 and to disconnect the relay connector (not shown) connected to the front panel 71, and also facilitates access to the circuit boards inside the control box 13.

[0050] The projection 711 is provided on the end face of the front panel 71 that extends longitudinally and is located on the side facing the rear panel 72. The projection 711 is a portion that extends in the planar direction from the end face of the front panel 71, for example, in a rectangular shape. The projection 711 has an inverted U-shaped notch 71a with an opening facing downward. The number of projections 711 is not particularly limited, and for example, two may be formed in the vertical direction.

[0051] The bent portion 722 is provided on the end face of the rear panel 72 that extends longitudinally and is located on the side facing the front panel 71. A stepped screw 72a is attached to the bent portion 722 so as to pass through it. The notch 71a of the projection 711 catches on the bent portion 722 of the stepped screw 72a, thereby engaging the front panel 71 with the rear panel 72 and maintaining the open state of the front panel 71. By being able to maintain the open state of the front panel 71, the work of disconnecting the intermediate connector when removing the front panel 71 is eliminated, making maintenance such as internal maintenance and inspection of the circuit board or replacement of the circuit board easier. The number of bent portions 722 is not particularly limited, similar to the projection 711, but it is preferable that the number be the same as the number of projections 711.

[0052] The folded portion 722 and the projection 711 are formed at different positions in the height direction. Specifically, the projection 711 is formed at a distance D1 from the upper end of the front panel 71, and the folded portion 722 is formed at a distance D2 from the upper end of the rear panel 72, with distance D1 being smaller than distance D2. When the front panel 71 is in the closed position, the folded portion 722 is located below the projection 711. Therefore, when the front panel 71 is removed from the box body 30, it catches on the rear panel 72 at a position lower than its height position in the closed position, and is maintained in the open position. Because the top of the control box 13 has a roof shape, even if one tries to rotate the front panel 71 to the same height position as the rear panel 72, it will interfere with the roof and cannot rotate. Because the projection 711 is formed at a position lower than the folded portion 722, the front panel 71 can rotate without interference from the roof of the control box 13, and the open position of the front panel 71 is maintained.

[0053] The bent portion 722 has a shape in which the portion extending from the end face is bent in a direction that intersects with the surface direction of the rear panel 72 and is on the inside of the control box 13. The projection 711 extends along the surface direction of the end face of the front panel 71. Therefore, neither the projection 711 nor the bent portion 722 is a protruding structure that protrudes into the cleaning area outside the control box 13, thus preventing injury to the worker during work.

[0054] In the air conditioner 1 according to this embodiment described above, when the terminal block mounting portion 36 is removed from the control box 13, the terminal block mounting portion 36 removed from the control box 13 is supported by the support component 40 having a first portion 42 and a second portion 43, and fixed to the housing 20. Therefore, when the terminal block is removed during maintenance, the worker does not need to support the removed terminal block mounting portion 36 while working, and the workability during maintenance can be improved.

[0055] Furthermore, the support component 40 is fastened to the control box 13 by the first screw 41 that secures the terminal block mounting portion 36 to the control box 13. Since the support component 40 can be removed from the control box 13 by releasing the first screw 41, there is no need for additional work to remove the support component 40.

[0056] Furthermore, since the terminal block mounting section 36 is inverted and fixed to the housing 20, the wiring extending from the terminal block 35 is not excessively pulled, and there is no need to leave excess wiring length.

[0057] Furthermore, when the terminal block mounting section 36 is removed from the control box 13, the second wiring 352 extends downwards from the control box 13. As a result, the on-site wiring passes below the path through which the control box 13 is pulled out, and does not obstruct the removal of the control box 13.

[0058] Furthermore, the direction of the second screw 47 is parallel to and opposite to the direction of the first screw 41. Therefore, when fixing the first part 42 to the terminal block mounting part 36, the first screw 41 can be screwed in with a screwdriver while being visible from above. Also, when fixing the second part 43 to the housing 20 after inverting the terminal block mounting part 36, the second screw 47 can be screwed in with a screwdriver while being visible from above.

[0059] Furthermore, by hooking the second screw 47 into the second keyhole 46 of the second part 43, the terminal block mounting part 36 can be temporarily fixed to the housing 20, thus preventing the terminal block mounting part 36 from falling even if you let go of it during work.

[0060] Furthermore, since the support component 40 has a Z-shape, when fixing the first part 42 to the terminal block mounting part 36 and when fixing the second part 43 to the housing 20, the first screw 41 and the second screw 47 can be screwed in with a screwdriver while being visible from above.

[0061] Furthermore, since the control box 13 has a sliding structure that allows it to move horizontally, the control box 13 can be pulled out from the housing 20, making maintenance easy.

[0062] Furthermore, when the terminal block mounting section 36 is removed from the control box 13, it is fixed in a position lower than the control box 13, so the path for pulling out the control box 13 is not obstructed, making maintenance easier.

[0063] Furthermore, the left side panel 37 has an openable and closable front panel 71 and a rear panel 72. When the front panel 71 is opened, a projection 711 of the front panel 71 engages with a bent portion 722 of the rear panel 72, holding the front panel 71 open. Because the front panel 71 is held open, there is no need to disconnect the relay connector from the front panel 71, and the worker does not need to hold the front panel 71 open. This makes maintenance such as internal maintenance and inspection of the circuit board, or replacement of the circuit board, easier and improves work efficiency.

[0064] Furthermore, since the projection 711 is located above the bent portion 722, the front panel 71 is held open below the rear panel 72. Therefore, even if there is a roof above the control box 13, interference between the front panel 71 and the roof of the control box 13 can be prevented.

[0065] Furthermore, since the bent portion 722 is located inside the control box 13 and is bent in a direction that intersects with the surface of the rear panel 72, no protruding structure is provided in the cleaning area of ​​the air conditioner 1, thus ensuring the safety of the worker.

[0066] Furthermore, by inserting the stepped screw 72a of the bent portion 722 into the notch 71a of the projection 711, the front panel 71 can be held in an open position, making it easy to perform maintenance such as internal maintenance and inspection of the circuit board, or replacement of the circuit board. [Explanation of Symbols]

[0067] 1 Air conditioner, 2 Outdoor unit, 3 Indoor unit, 4 Refrigerant circuit, 5 Refrigerant piping, 6 Compressor, 7 Flow path switching device, 8 Outdoor heat exchanger, 9 Outdoor blower, 10 Expansion section, 11 Heat exchanger, 12 Blower, 12a Fan casing, 12b Fan, 12c Motor, 13 Control box, 20 Enclosure, 21 Front panel, 21a Intake, 22 Side panel, 23 Top panel, 23a Outlet, 24 Drain pan, 25 Rear panel, 30 Box body, 31 Cover, 32 Side, 33 Heat sink, 34 Slide rail, 35 Terminal block, 36 Terminal block mounting section, 37 Left side panel, 38 Wiring entry port, 40 Support component, 41 First screw, 42 First section, 43 Second section, 44 Connecting section, 45 First keyhole, 46 Second keyhole, 47 Second screw, 71 Front panel, 71a Notch, 72 Rear panel, 72a Stepped screw, 351 first wiring, 352 second wiring, 711 projection, 722 bend.

Claims

1. A housing containing a heat exchanger and a blower, A control box housed inside the aforementioned enclosure and to which the first wiring inside the enclosure is connected, A terminal block to which the first wiring and the second wiring on the outside of the housing are connected is attached, and a terminal block mounting section is detachably fixed to the control box, A support component that is detachably fixed to the terminal block mounting portion and supports the removed terminal block mounting portion, Equipped with, The aforementioned support component is The first part, which is fixed to the terminal block mounting part that has been removed from the control box, A second part located opposite to the first part and fixed to the housing, It has, The terminal block mounting portion is fastened together with the first screw that secures the terminal block mounting portion to the control box. Air conditioner.

2. When the terminal block mounting portion is removed from the control box, it is inverted vertically and fixed to the housing. The air conditioner according to claim 1.

3. The second wiring extends downward from the control box when the terminal block mounting portion is removed from the control box. The air conditioner according to claim 1 or 2.

4. The second part further has a second screw for fixing it to the housing, When the terminal block mounting portion is removed from the control box, The second screw is fixed to the support component such that its direction of travel is parallel to and opposite to the direction of travel of the first screw. The air conditioner according to claim 1 or 2.

5. The second part has a daruma hole formed in which a small-diameter hole and a large-diameter hole are connected. The second screw attached to the housing is hooked into the keyhole, thereby temporarily fixing the terminal block mounting portion to the housing. The air conditioner according to claim 4.

6. The support component has a Z-shape. The air conditioner according to claim 1 or 2.

7. The aforementioned control box is Equipped with a sliding structure that can move horizontally. The air conditioner according to claim 1 or 2.

8. The terminal block is fixed so that when it is removed from the control box, it is positioned below the control box. The air conditioner according to claim 1 or 2.

9. The control box is further provided with side panels that cover the sides. The aforementioned side panel is It has a front panel that covers the front of the aforementioned side and is openable and closable, and a rear panel that covers the rear of the aforementioned side, The front panel has a projection formed on the rear end face of the front panel, The rear panel has a bend formed on the front end face of the rear panel, into which the projection of the front panel, when open, engages. The air conditioner according to claim 1 or 2.

10. The aforementioned protrusion is In the vertical direction of the aforementioned side panel, It is formed to be located above the aforementioned bent portion. The air conditioner according to claim 9.

11. The bent portion is bent on the inside of the control box and in a direction intersecting the surface of the rear panel. The air conditioner according to claim 9.

12. The aforementioned projection has a U-shaped notch formed in it. The bent portion has a stepped screw that is inserted into the notch when the front panel is in the open position. The air conditioner according to claim 9.

13. A housing having a heat exchanger and a blower inside, A control box housed inside the aforementioned enclosure and to which the first wiring inside the enclosure is connected, A terminal block to which the first wiring and the second wiring on the outside of the housing are connected is attached, and a terminal block mounting section is detachably fixed to the control box, A support component that is detachably fixed to the terminal block mounting portion and supports the removed terminal block mounting portion, A side panel covering the side of the control box, Equipped with, The aforementioned support component is The first part, which is fixed to the terminal block mounting part that has been removed from the control box, A second part located opposite to the first part and fixed to the housing, It has, The aforementioned side panel is It has a front panel that covers the front of the aforementioned side and is openable and closable, and a rear panel that covers the rear of the aforementioned side, The front panel has a projection formed on the rear end face of the front panel, The rear panel has a bend formed on the front end face of the rear panel, into which the projection of the front panel, when open, engages. The aforementioned projection has a U-shaped notch formed in it. The bent portion has a stepped screw that is inserted into the notch when the front panel is in the open position. Air conditioner.

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