JP2011153749A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioning device capable of making connecting wiring hardly touched by a hand while dispensing with a member for fixing the connecting wiring. <P>SOLUTION: This indoor unit 4 disposed on a ceiling has a drain pump 46 having a drain pump body 46b and wiring 46a for the drain pump, and the drain pump 46 is disposed in a space where an indoor heat exchanger 42 and an indoor fan 41 are disposed. The drain pan 40 is disposed at a lower part of the indoor heat exchanger 42. An electric component box 80 has an indoor control board 81 connected with the wiring 46a for the drain pump inside thereof. A passage P is formed between the drain pan 40 and a bell-mouth 45, and the wiring 46a for the drain pump is passed through the passage P to be extended from the drain pump body 46b to the indoor control board 81. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner.

  The indoor unit of the air conditioner is provided with a control board for driving and controlling components such as a fan and various valves. The components of the indoor unit can be controlled by being electrically connected to the control board.

  For example, an indoor unit of an air conditioner described in Patent Document 1 (Japanese Patent Laid-Open No. 2001-355870) includes an electric dust collector inside, and a connection wiring extending from the electric dust collector is connected to the control board. Has been. Then, the connection wiring extending from the electric dust collector is drawn so as to border the suction flow path, reaches the electrical component box, and is connected to the control board.

  However, in such an indoor unit of a conventional air conditioner, the connection wiring is drawn on the surface of the bell mouth or drain pan and led to the control board, but when this connection wiring is arranged, There is a need for an arrangement that is difficult for the user to touch.

  The present invention has been made in view of the above-described points, and an object of the present invention is to provide an air conditioner that can make the connection wiring difficult to touch while eliminating the need for a member for fixing the connection wiring. The object is to provide an indoor unit of the apparatus.

  An indoor unit of an air conditioner according to a first aspect of the present invention is an indoor unit of an air conditioner that is installed on a ceiling and has a heat exchanger and a fan, and includes a bell mouth, an electrical component, a drain pan, and an electrical component box. Yes. Bellmouth directs airflow to the fan. The electrical component has an electrical component body and a connection wiring extending from the electrical component body. This electrical component is provided in a space in which a heat exchanger and a fan are arranged. The drain pan is disposed below the heat exchanger and receives drain water generated in the heat exchanger. The electrical component box has a substrate connected to the electrical component main body through the connection wiring. A passage is formed in at least a part between the drain pan and the bell mouth. The connection wiring extends from the electrical component main body to the substrate by passing through the passage.

  In this indoor unit of the air conditioner, even when the connection wiring is led to the opposite side of the drain pan, it is difficult to touch the user's hand and improves safety by passing through the passage between the bell mouth and the drain pan. be able to.

  The indoor unit of the air conditioner according to the second aspect of the present invention is the indoor unit of the air conditioner according to the first aspect, wherein the passage has a suppression structure that suppresses the connection wiring from moving outside the passage. Yes.

  In the indoor unit of this air conditioner, it is possible to suppress the connection wiring arranged in the passage from moving to an unintended location.

  An indoor unit for an air conditioner according to a third aspect of the present invention is the indoor unit for an air conditioner according to the second aspect, in which at least one of the bell mouth and the drain pan has a rib for constituting a suppression structure. is doing.

  The indoor unit of this air conditioner does not require a separate member other than the bell mouth and the drain pan when realizing the suppression structure.

  An indoor unit of an air conditioner according to a fourth aspect of the present invention is the indoor unit of the air conditioner according to the second aspect or the third aspect, wherein the suppression structure elastically deforms at least one of a bell mouth and a drain pan. Thus, in a state where the entrance for entering the connection wiring into the passage is generated, the connection wiring is prevented from entering a gap generated between the bell mouth and the drain pan and at a place other than the entrance.

  Among the bell mouth and the drain pan, it is relatively easy for the operator to work on the entrance portion caused by elastic deformation so that the connection wiring is not caught. However, if a gap is generated on the back side other than the entrance, the connection wiring may enter a position that is not intended by the operator.

  On the other hand, in the indoor unit of the air conditioner in which the suppression structure according to the fourth aspect is adopted, it is possible to prevent the connection wiring from unintentionally entering a gap generated outside the entrance.

  An indoor unit of an air conditioner according to a fifth aspect of the present invention is the indoor unit of the air conditioner according to any of the first to fourth aspects, wherein the electrical component box and the electrical component are a drain pan and / or a bell. The mouse is placed apart.

  When the electrical component box and the electrical component are arranged with the drain pan and / or bell mouth separated from each other, the connection wiring needs to pass through the drain pan and / or the bell mouth. In this case, a sagging portion of the connection wiring is likely to occur, and it may be necessary to provide a fastener or the like as needed for support.

  On the other hand, in the indoor unit of the air conditioner according to the fifth aspect, the connection wiring is supported by the passage formed between the drain pan and the bell mouth even when the connection wiring is likely to hang down. be able to.

  In the indoor unit of the air conditioning apparatus according to the first aspect of the present invention, it is difficult for the user's hand to touch the connection wiring, and safety can be improved.

  In the indoor unit of the air conditioning apparatus according to the second aspect of the present invention, it is possible to prevent the connection wiring arranged in the passage from moving to an unintended location.

  In the indoor unit of the air conditioning apparatus according to the third aspect of the present invention, when realizing the suppression structure, separate members other than the bell mouth and the drain pan are not required.

  In the indoor unit of the air conditioning apparatus according to the fourth aspect of the present invention, it is possible to prevent the connection wiring from unintentionally entering a gap generated outside the entrance.

  In the indoor unit of an air conditioner according to the fifth aspect of the present invention, the connection wiring can be supported by the passage formed between the drain pan and the bell mouth even when the hanging portion of the connection wiring is likely to occur. it can.

It is a refrigerant circuit figure of an air harmony device provided with the indoor unit of this embodiment. It is an external appearance perspective view of an indoor unit. It is an internal schematic arrangement | positioning block diagram in the top view of an indoor unit. It is an internal schematic arrangement | positioning block diagram of the AA cross section in FIG. 3 of an indoor unit. It is an internal schematic arrangement | positioning block diagram of the BB cross section in FIG. 3 of an indoor unit. It is an external appearance block diagram of the bottom view of an indoor unit. It is a schematic block diagram of bottom view of an indoor unit main body. It is a general | schematic external appearance perspective view at the time of looking up a bellmouth from diagonally downward. It is an external appearance schematic block diagram of an electrical component box. It is a top view schematic diagram of the electrical component box and the indoor control board with the large lid removed. It is a general | schematic external appearance perspective view when an indoor unit main body is looked up from diagonally downward. It is side view sectional drawing which shows a mode that connection wiring passes. It is side surface sectional drawing which shows the elastic deformation state of the bellmouth in the middle of the arrangement | positioning operation | work of wiring. It is side surface sectional drawing which shows a mode that the connection wiring which concerns on the modification A passes. FIG. 10 is a side cross-sectional view showing a state where connection wiring according to Modification B passes. FIG. 10 is a side sectional view showing a state in which connection wiring according to Modification C passes.

<First Embodiment>
(1) Overall Configuration FIG. 1 shows a schematic configuration diagram of an air conditioner 1 having an indoor unit 4 in which an embodiment of the present invention is adopted.

  The indoor unit 4 of the air conditioner 1 is a type installed on the ceiling, has eight outlets, and has a function capable of independently controlling the blowing angles from the four outlets. The air conditioner 1 having the indoor unit 4 is a split type air conditioner, and mainly includes the indoor unit 4, the outdoor unit 2, the liquid refrigerant communication pipe 5 that connects the outdoor unit 2 and the indoor unit 4, and It has a gas refrigerant communication pipe 6 and a control unit 7 and constitutes a vapor compression refrigerant circuit 10.

(2) Detailed configuration (2-1) Outdoor unit 2
The outdoor unit 2 is installed outdoors, and mainly includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an expansion valve 24, a liquid side closing valve 25, a gas side closing valve 26, and an outdoor fan 27. And an outdoor temperature sensor 28 and an outdoor control board 29.

  The compressor 21 is a compressor for sucking low-pressure gas refrigerant and compressing it into a high-pressure gas refrigerant and discharging it.

  The four-way switching valve 22 is a valve for switching the direction of refrigerant flow when switching between cooling and heating. The four-way switching valve 22 can connect the discharge side of the compressor 21 and the gas side of the outdoor heat exchanger 23 and can connect the gas side closing valve 26 and the suction side of the compressor 21 during cooling. (Refer to the solid line of the four-way switching valve 22 in FIG. 1). Further, the four-way switching valve 22 can connect the discharge side of the compressor 21 and the gas side shut-off valve 26 and also connect the gas side of the outdoor heat exchanger 23 and the suction side of the compressor 21 during heating. It is possible (see the broken line of the four-way switching valve 22 in FIG. 1).

  The outdoor heat exchanger 23 is a heat exchanger that functions as a refrigerant condenser during cooling and functions as a refrigerant evaporator during heating. The outdoor heat exchanger 23 has a liquid side connected to the expansion valve 24 and a gas side connected to the four-way switching valve 22.

  The expansion valve 24 decompresses the high-pressure liquid refrigerant condensed in the outdoor heat exchanger 23 during cooling before sending it to the indoor heat exchanger 42 (described later), and the high-pressure liquid condensed in the indoor heat exchanger 42 during heating. This is an electric expansion valve capable of reducing the pressure before sending the refrigerant to the outdoor heat exchanger 23.

  The liquid side shutoff valve 25 and the gas side shutoff valve 26 are valves provided at connection ports with external devices and pipes (specifically, the liquid refrigerant communication pipe 5 and the gas refrigerant communication pipe 6). The liquid side closing valve 25 is connected to the expansion valve 24. The gas side closing valve 26 is connected to the four-way switching valve 22.

  The outdoor fan 27 is disposed inside the outdoor unit 2, sucks outdoor air, supplies the outdoor air to the outdoor heat exchanger 23, and then generates a flow of air discharged outside the unit. For this reason, the outdoor heat exchanger 23 has a function of condensing and evaporating the refrigerant using outdoor air as a cooling source or a heating source.

  The outdoor temperature sensor 28 is disposed inside the outdoor unit 2, detects the outdoor temperature, and transmits it to the control unit 7 via the outdoor control board 29.

  The outdoor control board 29 is disposed inside the outdoor unit 2, and receives a command from the control unit 7 and performs drive control of the components of the outdoor unit 2.

(2-2) Indoor unit 4
FIG. 2 shows an external perspective view of the indoor unit 4. FIG. 3 shows an internal schematic arrangement configuration diagram of the indoor unit 4 in a top view. FIG. 4 shows an internal schematic arrangement configuration diagram of the indoor unit 4 in the AA cross section in FIG. 3. In FIG. 5, the internal schematic arrangement | positioning block diagram in the BB cross section in FIG. 3 of the indoor unit 4 is shown. In FIG. 6, the external appearance block diagram of the bottom view of the indoor unit 4 is shown. In FIG. 7, the bottom view top view of the indoor unit main body 11 of the indoor unit 4 is shown.

  As shown in FIG. 3, the indoor unit 4 includes an indoor unit body 11 and a decorative panel structure 12.

(2-2-1) Indoor unit body 11
As shown in FIGS. 4 and 5, the indoor unit main body 11 constitutes an upper portion of the indoor unit 4, and includes a main body casing 31, an indoor fan 41, an indoor heat exchanger 42, a drain pan 40, a bell mouth 45, electrical equipment A product box 80, an indoor temperature sensor 43, a drain pump 46, a drain discharge pipe 47, a float switch 48, and the like are provided.

  As shown in FIGS. 2 and 3, the main casing 31 is a substantially octagonal box-like body in which long sides and short sides are alternately and repeatedly arranged in a plan view. The main body casing 31 is made of sheet metal, and the lower surface side is open. The main casing 31 has a substantially octagonal top plate 33a and a side plate 34 extending downward from the peripheral edge of the top plate 33a. The side plate 34 includes side plates 34a, 34b, 34c, 34d corresponding to the long sides of the top plate 33a, and side plates 34e, 34f, 34g, 34h corresponding to the short sides of the top plate 33a.

  As shown in FIGS. 1, 5, and 6, the indoor unit 4 is provided with a suction port 35 in the lower center and a blower port 36 that goes around the suction port 35. And the air flow path which goes to both the indoor unit main body 11 and the decorative panel structure 12 from the suction inlet 35 to the blower outlet 36 is provided. This air flow path includes a suction flow path 35a for taking room air into the main body casing 31 from the suction port 35, and each blow flow path 51a, 52a, 53a, 54a, 61a, 62a for blowing conditioned air into the room. 63a and 64a.

  The indoor fan 41 is configured by a turbo fan that is a centrifugal blower and is disposed inside the main body casing 31. The indoor fan 41 sucks indoor air into the main body casing 31 through the suction port 35, and generates a flow of air that is blown out of the main body casing 31 through the air outlet 36. The indoor fan 41 has a fan motor 41a provided at the center of the top plate 33a of the main casing 31 and an impeller 41b that is connected to the fan motor 41a and is driven to rotate. The impeller 41b is an impeller having turbo blades, and sucks air into the impeller 41b from below and blows out toward the outer peripheral side of the impeller 41b in a plan view. As shown in FIG. 9, an indoor fan wiring 41 d for connecting to the indoor control board 81 of the electrical component box 80 extends from the fan motor 41 a.

  As shown in FIG. 3, the indoor heat exchanger 42 is a finned tube heat exchanger that is bent inside the main body casing 31 so as to surround the periphery of the indoor fan 41 in a plan view. More specifically, the indoor heat exchanger 42 has a large number of heat transfer fins arranged at predetermined intervals, and a plurality of heat transfer tubes penetrating these heat transfer fins in the plate thickness direction. It is a heat exchanger called a cross fin type.

  As described above, the liquid side of the indoor heat exchanger 42 is connected to the liquid refrigerant communication tube 5 via the liquid side connection tube 5a. The gas side of the indoor heat exchanger 42 is connected to the gas refrigerant communication pipe 6 via the gas side connection pipe 6a. The indoor heat exchanger 42 functions as a refrigerant evaporator during cooling and as a refrigerant condenser during heating. As a result, the indoor heat exchanger 42 can exchange heat with the air blown from the indoor fan 41, cools the air during cooling, and heats the air during heating. In addition, the liquid side connection pipe 5a and the gas side connection pipe 6a for connecting to the liquid refrigerant communication pipe 5 and the gas refrigerant communication pipe 6 extend through the side plate 34h to the outside of the main body casing 31.

  As shown in FIGS. 3, 4, 5, and 7, the drain pan 40 is disposed below the indoor heat exchanger 42, and drain water generated by condensation of moisture in the air in the indoor heat exchanger 42. Take it. The drain pan 40 is mounted at a lower position in the main body casing 31. As shown in FIGS. 3 and 5, the drain pan 40 is formed with a blowout opening 40a, a suction opening 40b, a drain water receiving groove 40c, a passage upper wall 40x, and a passage outer wall 40y. Yes. The blowout opening 40a is formed at various locations so as to communicate with the blowout port 36, and constitutes a part of each blowout flow path 51a, 52a, 53a, 54a, 61a, 62a, 63a, 64a. The suction opening 40b is formed so as to communicate with the suction port 35, and constitutes a part of the suction flow path 35a. The drain water receiving groove 40c is formed to be recessed downward so as to hold drain water on the lower side of the indoor heat exchanger 42.

  As shown in FIG. 5, the passage upper wall portion 40 x is a surface that extends substantially horizontally from the inner wall surface of the suction opening 40 b toward the outer side, and faces downward. The passage upper wall portion 40x functions as an upper wall surface when the passage P is formed with a part of the bell mouth 45.

  As shown in FIG. 5, the passage outer wall portion 40 </ b> P is a surface that extends downward from the outer end portion of the passage upper wall portion 40 x and faces inward. The passage outer wall portion 40y functions as an outer wall surface when the passage P is formed with a part of the bell mouth 45.

  As shown in FIGS. 3, 4 and 5, the bell mouth 45 is arranged so that the radially outer side is along the inside of the suction opening 40b of the drain pan 40, and the air sucked from the suction port 35 is discharged indoors. The fan 41 is guided to the impeller 41b. The bell mouth 45 is a molded product made of resin.

  As shown in FIG. 8 which is a schematic external perspective view of the bell mouth 45 as viewed from obliquely below, a passage inner wall plate 45a, a passage lower wall plate 45b, a guard rib 45c, an inner windbreak plate 45g, a lower windbreak plate 45h, The electrical component box surface 45x, the guide curved surface portion 45m, and the triangular surface portion 45s are integrated.

  As shown in FIG. 4, the passage inner wall plate 45 a is a surface that is standing substantially downward in the vertical direction, and constitutes the inner wall surface of the passage P formed between the drain pan 40 in the installed state. .

  The passage lower wall plate 45b constitutes a lower wall surface of the passage P formed with the drain pan 40 in the installed state.

  As shown in FIG. 4, the guard rib 45c is a rib protruding outward from the vicinity of the upper end of the passage inner wall plate 45a so as to be parallel to the passage lower wall plate 45b. The guard ribs 45c are provided at two positions in the longitudinal direction of the passage inner wall plate 45a. The guard rib 45c suppresses the movement of trying to escape to the outside of the passage P of the connection wiring in a state where the connection wiring is passed through the passage P between the drain pan 40 and the drain pan 40 described above.

  As shown in FIG. 4, the inner windbreak plate 45 g has an opening 87 for the main body provided on the side of the electrical component box 80 of the passage P formed between the drain pan 40 and the electrical component 80 in the installed state. (See FIG. 9) so as to cover the space between the inside and the inside.

  In the installed state, the lower windbreak plate 45h forms a space between the end of the electrical component box 80 side of the passage P formed between the drain pan 40 and the main body opening 87 provided on the electrical component 80 side. It is provided so as to cover from the lower side.

  The electrical component box surface 45x is a flat surface for arranging the electrical component box 80 on the lower surface side, and the electrical component box 80 is fixed to the lower surface side as shown in FIG.

  The guide curved surface portion 45m is curved so as to warp inward while decreasing the outer diameter as it rises upward.

  The triangular surface portion 45 s has a substantially triangular shape on the side plate 34 g side, and is formed so as to extend substantially horizontally. The upper surface side has a portion in surface contact with the lower surface side of the drain pan 40.

  The drain pump 46 includes a drain pump main body 46b and a drain pump wiring 46a. The drain pump main body 46 b is a pump for draining the drain water accumulated in the drain pan 40 to the outside of the indoor unit main body 11. Drainage by the drain pump body 46 b is performed through a drain discharge pipe 47. As shown in FIG. 9, the drain pump wiring 46 a is a wiring extending from the drain pump main body 46 b in order to connect to the indoor control board 81 of the electrical component box 80. The drain pump wiring 46 a is disposed so as to pass through the passage P between the drain pan 40 and the bell mouth 45 in the installed state after the wiring connection is completed. Further, the drain pump wiring 46a is provided with a double tube except for the portion covered by the passage P, thereby ensuring a double insulation state and improving safety.

  The float switch 48 includes a float switch main body 48b and a float switch wiring 48a. The float switch main body 48 b detects the level of drain water accumulated in the drain pan 40. As shown in FIG. 9, the float switch wiring 48 a is a wiring extending from the float switch main body 48 b in order to connect to the indoor control board 81 of the electrical component box 80. The float switch 48 communicates with the control unit 7 through the float switch wiring 48a to operate the drain pump main body 46b. Similarly to the drain pump wiring 46a, the float switch drain wiring 48a is also arranged so as to pass through the passage P between the drain pan 40 and the bell mouth 45 in the installed state after the wiring connection is completed. Similarly, the float switch lens wiring 48a is provided with a double tube except for the portion covered by the passage P, thereby ensuring a double insulation state and improving safety.

  The indoor temperature sensor 43 is disposed inside the main body casing 31 and downstream of the indoor heat exchanger 42 in the air flow direction, and detects the indoor temperature. Also from this room temperature sensor 43, as shown in FIG. 9, a room temperature sensor wiring 43a for connecting to the room control board 81 of the electrical component box 80 extends.

  As shown in FIGS. 4, 7 and 8, the electrical component box 80 is disposed below the interior of the indoor unit main body 11 and inside the drain pan 40 in the radial direction, and is connected to the electrical component box surface 45x of the bell mouth 45. It is fixed on the bottom side. The lower surface of the electrical component box 80 constitutes the lower surface of the indoor unit body 11 together with the lower surface of the drain pan 40. Inside the electrical component box 80, an indoor control board 81 is arranged as shown in FIG. Various electrical components built in the indoor unit 4 are connected to the indoor control board 81. Among these electrical components, the electrical components built in the indoor unit body 11 include an indoor fan 41 (fan motor 41a), an indoor temperature sensor 43, a drain pump 46, a float switch 48, and the like. Further, as the electrical components built in the decorative panel structure 12, there are a cleaning mechanism section 18, a human detection sensor 44 and a wind direction adjusting section 70 which will be described later. For this reason, as shown in FIG. 10, the indoor control board 81 connects the target connection portion 11ac for connecting the electrical component on the indoor unit body 11 side and the electrical component on the decorative panel structure 12 side. It has target connection portions 44ac and 75ac.

  In addition, the heat insulating material 38 as shown in FIG. 12 is arrange | positioned around the part used as the flow path of an air flow among the indoor unit main bodies 11 mentioned above.

(2-2-2) Decorative panel structure 12
As shown in FIGS. 4 and 5, the decorative panel structure 12 constitutes a lower portion of the indoor unit 4 and is attached to the indoor unit main body 11 installed on the ceiling. The decorative panel structure 12 includes a decorative panel main body 32 and a flap driving unit 15.

(Decorative panel body 32)
As shown in FIG. 3, the decorative panel body 32 is a substantially quadrangular panel that forms the lower surface of the indoor unit 4. As shown in FIGS. 1 and 6, the decorative panel main body 32 includes a suction grill 32 a, an inner frame panel 37, and an outer frame panel 38.

  The suction grill 32 a is a substantially rectangular panel disposed in the center of the lower surface of the indoor unit 4, and has a suction port 35. The suction channel 35a described above is connected to the downstream side of the air channel of the suction port 35.

  The inner frame panel 37 covers the space between the air inlet 35 and the air outlet 36 in the lower surface of the indoor unit 4 so as to cover the air inlet 35 from the periphery.

  The outer frame panel 38 covers the lower surface of the indoor unit 4 outside the air outlet 36.

  As shown in FIG. 6, the air outlet 36 provided between the inner frame panel 37 and the outer frame panel 38 has a substantially annular shape with long side air outlets 50 and short side air outlets 60 arranged alternately. Is formed.

  The long-side air outlet 50 includes a first long-side air outlet 50a, a second long-side air outlet 50b, a third long-side air outlet 50c provided at positions corresponding to the respective sides of the suction port 35 in a substantially square shape, and The fourth long side outlet 50d is composed of four outlets. The first long-side outlet 51, the second long-side outlet 52, the third long-side outlet 53, and the fourth long-side outlet 54 have a first long-side outlet channel 51a and a second long-side outlet, respectively. The blowout flow path 52a, the third long side blowout flow path 53a, and the fourth long side blowout flow path 54a are connected, and when the indoor fan 41 is driven, air flows F51, F52, F53, and F54 are generated, respectively.

  The short side outlet 60 includes a first short side outlet 61, a second short side outlet 62, a third short side outlet 63 provided at positions corresponding to the corner portions of the substantially rectangular shape of the suction port 35, and The fourth short side air outlet 64 is composed of four air outlets. The first short side outlet 61, the second short side outlet 62, the third short side outlet 63, and the fourth short side outlet 64 have a first short side outlet 61a and a second short side, respectively. The blowing flow path 62a, the third short side blowing flow path 63a, and the fourth short side blowing flow path 64a are connected, and the air flow F61, F62, F63, and F64 are generated by driving the indoor fan 41, respectively.

  In addition, the 4th long side blowing flow path 54a and the 4th short side blowing flow path 64a are branched in the downstream, and as shown in FIG. 6, they are connected and integrated in the upstream.

(Flap drive unit 15)
As shown in FIG. 4, the flap drive unit 15 is located above the decorative panel body 32 and below the indoor unit body 11, and includes an air filter 39, a cleaning function unit 18, a human detection sensor 44, and And a wind direction adjusting unit 70 and the like.

  The air filter 39 is provided at a position facing the inner opening of the bell mouth 45 in the middle of the suction flow path 35a, and filters air taken into the indoor unit body 11 from the indoor space.

  The cleaning mechanism portion 18 is disposed on the upstream side (inside the indoor space) in the air flow direction with respect to the air filter 39 in the middle of the suction flow path 35a, and has a function of scraping dust and the like attached to the air filter 39. Yes. In addition, although the wiring for connection to the indoor control board 81 has extended from this cleaning mechanism part 18, description is abbreviate | omitted.

  The human detection sensor 44 is an infrared sensor that detects the position of a user staying in a room that is an air-conditioning target space. From this human detection sensor 44, a human detection sensor wiring 44a for connecting to the indoor control board 81 inside the electrical component box 80 of the indoor unit body 11 described above extends. By connecting the indoor control board 81 and the human detection sensor 44 via the human detection sensor wiring 44a, the control unit 7 can perform control using the detection result of the human detection sensor 44. As shown in FIG. 10, the human detection sensor wiring 44a has a cord portion 44aa and a connection terminal 44ab provided at the tip of the cord portion 44aa.

  As shown in FIGS. 2, 5, and 6, the airflow direction adjusting unit 70 changes the four flaps 71, 72, 73, 74 and the inclination angles of these flaps 71, 72, 73, 74. A flap drive motor 75 is provided. The four flaps 71, 72, 73, 74 are the first long-side outlet 50a, the second long-side outlet 50b, and the third long-side outlet that form the outlet channels 51a, 52a, 53a, 54a. 50c and the 4th long side blower outlet 50d are each arrange | positioned at the position of four blower outlets. A flap driving motor wiring 75a for connecting to the indoor control board 81 inside the electrical component box 80 of the indoor unit body 11 described above extends from the flap driving motor 75. As shown in FIG. 10, the flap drive motor wiring 75a has a cord portion 75aa and a connection terminal 75ab provided at the tip of the cord portion 75aa. When the indoor control board 81 and the flap drive motor 75 are connected via the flap drive motor wiring 75a, the control unit 7 controls the operation of the flap drive motor 75 to control the flaps 71, 72, 73, 74. It becomes possible to independently adjust the inclination angle.

  As shown in FIG. 10, the cord portion 44aa of the human detection sensor wiring 44a and the cord portion 75aa of the flap drive motor wiring 75a are gathered together by a nylon clamp 19 as a slip-off preventing member. The portion gathered by the nylon clamp 19 is inside the electrical component box 80, and passes through a gap S remaining in a state where a decorative panel opening 88 described later is closed with a small lid 85, as shown in FIG. The size is not possible. Thereby, the load applied to the connection terminals 44ab and 75ab when pulled can be reduced while preventing the human detection sensor wiring 44a and the flap drive motor wiring 75a from falling off.

(3) Control unit 7
As shown in FIG. 1, the control unit 7 is configured by connecting an indoor control board 81, an outdoor control board 29, and a controller 7a. The controller 7 controls the operation of the air conditioner 1 by exchanging information and various commands among the indoor control board 81, the outdoor control board 29, and the controller 7a.

  The controller 7a is provided with a function of receiving an instruction from the user for performing a wind direction adjustment control mode for adjusting the inclination state of the four flaps 71, 72, 73, 74. The controller 7a can also accept settings for individual swing operations for the four flaps 71, 72, 73, and 74. When receiving the instruction of the wind direction adjustment control mode, the control unit 7 controls the operation of the flap drive motor 75 and independently controls the inclination angles of the four flaps 71, 72, 73 and 74.

(4) Detailed structure of electrical component box 80 As shown in the schematic external view of FIG. 9 and the schematic diagram of the internal configuration of FIG. 10, the electrical component box 80 has an electrical component box main body 83, a large lid 86, and a small lid 85. is doing.

  The electrical component box body 83 has a box shape made of sheet metal with a large opening on the lower surface side, and accommodates the indoor control board 81 described above inside.

  The electrical component box body 83 is provided with a notch 83a for the body. The notch 83a for the main body includes the indoor fan 41, the indoor temperature sensor 43, the drain pump 46 and the float switch 48, which are electrical components on the indoor unit main body 11 side, respectively, and an indoor fan wiring 41d and an indoor temperature sensor wiring 43a. These are cutouts for allowing the drain pump wiring 46a and the float switch wiring 48a to pass therethrough. The main body cutout 83a is provided on the side plate 34c side (see FIG. 3) which is one end side of the electrical component box main body 83 in the longitudinal direction. Therefore, on the side plate 34c side, the liquid side connecting pipe 5a, the gas side connecting pipe 6a, the various wires 41d, 43a, 46a, and 48a, and the devices 41, 43, 46, and 48 are concentrated. It is easy to perform maintenance.

  The electrical component box main body 83 is further provided with a decorative panel cutout 83b on the side opposite to the side on which the main body cutout 83a is provided in the longitudinal direction. The cutout 83b for decorative panel is a cutout for allowing the flap drive motor wiring 75a and the human detection sensor wiring 44a extending from the decorative panel structure 12 side to pass therethrough.

  The large lid 86 has a shape corresponding to an opening that is wide open on the lower surface side of the electrical component box body 83, and is a sheet metal member that is fixed to the electrical component box body 83 so as to close the opening. The large lid 86 is fixed to the electrical component box main body 83 by screwing (not shown). As shown in FIGS. 9 and 10, the large lid 86 is screwed and fixed to the electrical component box body 83 at a position corresponding to the decorative panel cutout 83b on the electrical component box body 83 side. A large lid notch 86a is formed.

  In the state where the large lid 86 is screwed and fixed to the electrical component box main body 83 as described above, the main body opening 87 is provided between the edge of the main body notch 83a and the edge of the large lid 86 as shown in FIG. Is to be formed. Thereby, even when the large lid 86 is screwed and fixed to the electrical component box main body 83, the main body opening 87 is not blocked.

  Further, in a state where the large lid 86 is screwed and fixed to the electrical component box main body 83, the decorative panel opening 88 is provided between the edge of the decorative panel cutout 83b and the large cover cutout 86a of the large lid 86. (The part bordered by the dotted line in FIG. 9) is formed.

  The small lid 85 is a black resin member that is rotatably supported with respect to the large lid 86 via a hinge 85 a and can be fitted into the large lid notch 86 a of the large lid 86 and closed. . The small lid 85 has a fixed portion 85b at the end opposite to the hinge 85a. In a state where the small lid 85 is closed, the fixing portion 85b is caught on the electrical component box main body 83 side.

  The small lid 85 closes the decorative panel opening 88 formed with the large lid 86 screwed to the electrical component box body 83 while leaving a gap S as shown in FIG. It has a shape that can be made. Specifically, in the closed state, the small lid 85 covers the whole of the large lid cutout 86 a on the surface of the large lid 86, and the decorative panel cutout 83 b portion of the electrical component box body 83. Is covered so that a gap S extending in the vertical direction remains between the edges of the cutout 83b for the decorative panel. Thereby, even when the large lid 86 is screwed and fixed to the electrical component box main body 83, the decorative panel opening 88 is not completely blocked.

  The indoor control board 81 has target connection portions 11ac, 44ac, and 75ac to which wiring extending from the electrical components is connected. As shown in FIG. 10, among these target connection portions 11ac, 44ac, 75ac, the target connection portion 11ac to which the wiring extending from the electrical component on the indoor unit main body 11 side is connected is located in the vicinity of the main body opening 87. Is arranged. Further, the target connection portions 44ac and 75ac to which the wiring extending from the electrical component on the decorative panel structure 12 side is connected are arranged in the vicinity of the decorative panel opening 88.

(5) Structure of Passage P FIG. 11 is a schematic external perspective view of the indoor unit body 11 as viewed from obliquely below. FIG. 12 shows a schematic cross-sectional side view of the indoor unit body 11 as viewed from the side plate 34d side.

  Among the electrical components on the indoor unit main body 11 side, the drain pump wiring 46a extending from the drain pump 46 and the float switch drain wiring 48a extending from the float switch 48 are, as shown in FIGS. 11 and 12, respectively, a drain pan 40 and a bell. It arrange | positions so that the passage P formed between the mouse | mouth 45 may be passed.

  The passage P is a space surrounded by the passage outer wall portion 40y of the drain pan 40 and the passage inner wall plate 45a and the passage lower wall plate 45b of the bell mouth 45. The passage P extends in the depth direction of FIG. 12, that is, substantially parallel to the side wall 34c and in the horizontal direction.

  The inner wall surface of the passage P is constituted by a passage inner wall plate 45 a of the bell mouth 45. The outer wall surface of the passage P is constituted by a passage outer wall portion 40 y of the drain pan 40. The lower wall surface of the passage P is constituted by a passage lower wall plate 45b extending from the vicinity of the lower end of the passage inner wall plate 45a of the bell mouth 45. The passage lower wall plate 45b of the bell mouth 45 extends to the outside of the surface of the passage outer wall plate 40P of the drain pan 40 as shown in FIG. The upper wall surface of the passage P is constituted by the passage upper wall portion 40 x of the drain pan 40. The guard rib 45c extending outward from the vicinity of the upper end of the passage inner wall plate 45a also constitutes a part of the upper surface of the passage P.

  Note that the bell mouth 45 has another fixed portion (not shown) on the inner upper side of the indoor unit main body 11, and the outer lower end where the passage inner wall plate 45a, the passage lower wall plate 45b, the guard rib 45c, and the like are located. The vicinity is a free end.

  The horizontal positional relationship between the bell mouth 45 and the drain pan 40 in the vicinity of the passage P is such that the outer end portion of the passage lower wall plate 45b of the bell mouth 45 abuts the lower end of the passage outer wall portion 40y of the drain pan 40, and The outer ends of the guard ribs 45c of the bell mouth 45 are positioned with respect to each other by abutting against the upper end of the passage outer wall 40y of the drain pan 40.

  The vertical positional relationship between the bell mouth 45 and the drain pan 40 in the vicinity of the passage P is such that the upper surface portion near the outer end portion of the passage lower wall plate 45b of the bell mouth 45 is near the lower end of the passage outer wall portion 40y of the drain pan 40. They are positioned with respect to each other by abutting against the lower surface portion and contacting the upper surface of the guard rib 45c of the bell mouth 45 with the lower surface of the passage upper wall portion 40x of the drain pan 40.

(6) Wiring Passing Position Both the drain pump wiring 46a extending from the drain pump 46 and the float switch wiring 48a extending from the float switch 48 are provided as passages as shown in FIGS. It is guided to the indoor unit main body 11 in the electrical component box 80 through P.

  Here, the drain pump wiring 46a extends from the drain pump 46 disposed in the space above the drain pan 40, and after extending to the outside of the outlet flow path 53a, as shown in FIGS. Then, it passes between the side plate 34 c and the heat insulating material 38 and reaches the vicinity of the lower surface of the drain pan 40. Thereafter, the drain pump wiring 46 a extends inward and then passes between the upper surface of the triangular surface portion 45 s of the bell mouth 45 and the lower surface of the drain pan 40 and reaches the passage P. In the passage P, the drain pump wiring 46a extends along the longitudinal direction of the passage P and extends to the end of the passage P on the electrical component box 80 side. The drain pump wiring 46a passes through the space outside the inner windproof plate 45g of the bell mouth 45 and above the lower windproof plate 45h (see FIG. 8), and opens to the main body opening 87 of the electrical component box 80. To the indoor control board 81 (see FIGS. 9 and 10).

  The float switch wiring 48a is also provided in the same manner as the drain pump wiring 46a.

(7) Wiring Arrangement Operation FIG. 13 is a schematic side sectional view showing the bell mouth 45 that is elastically deformed during the wiring arrangement operation and the surroundings.

  Here, the bell mouth 45 and the drain pan 40 are assembled in the indoor unit body 11 before the drain pump wiring 46a and the float switch wiring 48a are introduced into the passage P. The passages P are already formed in a state where they are positioned relative to each other. At this stage, the drain pump wiring 46a extends from the drain pan 40 as shown in FIG. 13, passes between the side plate 34c and the heat insulating material 38, reaches the vicinity of the lower surface of the drain pan 40, and passes through the passage P. It is in a state extending substantially in parallel. In this state, the worker starts the arrangement work of the drain pump wiring 46a and the float switch wiring 48a.

  First, as shown in FIG. 13, the operator pinches the outer end of the passage lower wall plate 45 b of the bell mouth 45 and elastically deforms it so as to be turned inward and downward. An inlet gap D1 is generated between the two. The inlet gap D1 is generated until it becomes slightly larger than the outer diameter of the drain pump wiring 46a and the float switch wiring 48a. In a state where the inlet gap D1 is generated, the operator slides the drain pump wiring 46a and the float switch wiring 48a in the radial direction of these wirings to pass through the inlet gap D1, so that the inside of the passage P Move to.

  Since the passage inner wall plate 45a, the passage lower wall plate 45b, and the guard rib 45c of the bell mouth 45 are integrated, the bell mouth 45 is also attached to the guard rib 45c in a state where the entrance gap D1 is generated as described above. Deviation has occurred from the position in which the elastic deformation has not occurred. Since the position of the guard rib 45c is thus shifted, the back of the passage is formed between the upper surface of the guard rib 45c of the bell mouth 45 and the lower surface of the passage upper wall portion 40x of the drain pan 40 that were in contact before elastic deformation. A gap D2 is generated. Thus, in a state where the operator tries to put the drain pump wiring 46a and the float switch wiring 48a into the passage P, there is another clearance on the back side (upper side) of the passage P in addition to the entrance clearance D1. A passage back gap D2 also occurs. However, even if the passage depth gap D2 is generated in this way, the guard rib 45c extending from the vicinity of the upper end of the passage inner wall plate 45a of the bell mouth 45 leads to the passage depth gap D2 of the drain pump wiring 46a and the float switch wiring 48a. Movement can be suppressed.

(8) Features (8-1)
The indoor unit 4 of the above embodiment has a structure in which the drain pump wiring 46a and the float switch wiring 48a are communicated with the passage P so that it is difficult for an operator to touch. For this reason, safety can be improved.

  Further, since the drain pump wiring 46a and the float switch wiring 48a are supported by the passage P, structures and parts for fixing the wiring are not necessary in this portion.

(8-2)
Further, in a portion where the drain pump wiring 46a and the float switch wiring 48a are covered by the passage P, safety can be improved without further providing a tube for double insulation.

(8-3)
In the indoor unit 4 of the above embodiment, the wiring of the electrical components arranged above the drain pan 40 and the bell mouth 45 such as the drain pump 46 and the float switch 48 is arranged below the drain pan 40 and the bell mouth 45 on the opposite side. It leads to the electrical component box 80 on the side. In this way, when the wiring is routed so that the drain pan 40 and the bell mouth 45 are bordered from one side to the other side, the drain pan 40 and the bell mouth 45 that are the subject of bordering are diverted to form the passage P. I am letting. For this reason, it is possible to eliminate the need to prepare a separate new part for forming the passage P.

(8-4)
In the configuration in which the wiring is arranged so as to border the drain pan, the bell mouth, or the like, a hanging portion of the wiring is likely to be generated, and it may be necessary to provide a support or the like as appropriate.

  On the other hand, in the indoor unit 4 of the air conditioner 1 according to the above embodiment, even if a wire drooping portion is likely to occur, it passes through the passage P formed between the drain pan 40 and the bell mouth 45. By doing so, the wiring can be supported so as not to cause a sagging portion.

(8-5)
In the indoor unit 4 of the above-described embodiment, the inner windbreak plate 45g and the lower windbreak plate 45h are disposed between the inner end and the lower portion between the end of the passage P on the electric component box 80 side and the main body opening 87 of the electric component 80. Can be covered. For this reason, even between the passage P and the opening 87 for the main body, a structure in which the operator's hand is difficult to touch can be achieved.

(8-6)
In the indoor unit 4 of the above embodiment, the guard rib 45c is provided so that the wiring arranged in the passage P does not move to the passage back gap D2. As a result, the drain pump wiring 46 a and the float switch wiring 48 a may escape into a space other than the passage P, or may be sandwiched in a portion other than the passage P between the drain pan 40 and the bell mouth 45. Can be suppressed.

  It should be noted that the operator can easily visually recognize the entrance gap D1 and can relatively easily perform the work so as not to pinch the wiring, but in particular, the wiring should not enter the passage depth gap D2 on the back side of the passage P. It is difficult to work without the guard rib 45c. On the other hand, in the indoor unit 4 of the above-described embodiment, by employing the guard rib 45c, it is possible to facilitate wiring arrangement work so as not to be sandwiched in such a passage depth gap D2.

(8-7)
In the indoor unit 4 of the above embodiment, the main body opening 87 of the electrical component box 80 is provided at a position facing the end of the passage P on the electrical component box 80 side. Therefore, the drain pump wiring 46 a and the float switch wiring 48 a can be easily pulled into the electrical component box 80.

(9) Modification (9-1) Modification A
In the above-described embodiment, the structure in which the outer end portion of the guard rib 45c of the bell mouth 45 is in contact with the passage outer wall portion 40y of the drain pan 40 in the installed state has been described as an example.

  However, like the guard rib 245c of the indoor unit 204 shown in FIG. 14, the outer end of the guard rib 245c and the passage outer wall 40y may be separated from each other in the installed state. In this case, the horizontal positioning of the drain pan 40 and the bell mouth 45 in the vicinity of the passage P is such that the vicinity of the lower end of the passage outer wall portion 40y of the drain pan 40 and the passage lower wall plate 45b of the bell mouth 45 abut each other. It may be performed only by things.

(9-2) Modification B
In the above embodiment, the case where the guard rib 45c provided in the bell mouth 45 is employed has been described as an example.

  However, the indoor unit which does not have such a guard rib 45c like the indoor unit 304 shown in FIG. 15 may be sufficient. For example, when the gap other than the entrance gap D1 generated during the wiring placement operation is smaller than the outer diameter of the wiring that passes through the passage P, or when other shapes or dimensions that prevent the wiring from being caught are employed, the guard rib Even without providing 45c, the wiring can be stably arranged in the passage P.

(9-3) Modification C
As a structure in which the guard rib 45c is not provided as in the above-described modification (C), for example, as shown in FIG. 16, a passage inner wall plate 445a having a shape in which the vicinity of the center protrudes on the side opposite to the passage P ′ side is employed. The indoor unit 404 may be used.

  The passage inner wall plate 445a is formed so that the vertical direction is separated toward the outside. Then, when the operator pinches the passage lower wall plate 45b of the bell mouth 45 to form the entrance gap D1, and after releasing the passage lower wall plate 45b after introducing the wiring, the wiring is located above and below the inner wall plate 445a of the passage. The taper collects in the vicinity of the center in the height direction of the passage P ′. For this reason, since wiring is gathered in the direction away from other gaps, such as passage depth gap D2 explained by the above-mentioned embodiment, unintended pinching and movement to places other than passage P 'can be controlled.

  In such a passage inner wall plate 445a, the drain pump wiring 46a and the float switch wiring 48a can be stably positioned in the passage P 'even when the protruding rib shape is not provided.

(9-4) Modification D
In the above embodiment, the case where the bell mouth 45 is elastically deformed to generate the entrance gap D1 has been described as an example.

  However, a structure in which a gap corresponding to the inlet gap D1 is generated by elastically deforming the drain pan 40 side may be employed.

(9-5) Modification E
In the above embodiment, the case where the guard rib 45c is provided on the bell mouth 45 has been described as an example.

  However, the member for suppressing the movement of the wiring to the unintended gap such as the passage back gap D <b> 2 is not limited to that provided in the bell mouth 45. For example, the drain pan 40 may have a rib extending from the drain pan 40 side to the bell mouth 45 side.

(9-6) Modification F
In the above-described embodiment, the case where the drain pan 40 and the bell mouth 45 are arranged so as to determine each other's position by directly contacting each other has been described as an example.

  However, the positions of the drain pan 40 and the bell mouth 45 may be determined via other interposed members. In this case, a member corresponding to the guard rib 45c of the above-described embodiment is directed to at least one of a gap generated between the drain pan and the interposed member or a gap generated between the bell mouth 45 and the interposed member during the wiring arrangement work. You may further provide the rib etc. which can suppress the movement of wiring.

(9-7) Modification G
In the above embodiment, the end of the passage P on the electrical component box 80 side and the main body opening 87 of the electrical component box 80 are arranged apart from each other, and this portion of the wiring is connected by the inner windbreak plate 45g and the lower windbreak plate 45h. The case of covering is described with an example.

  However, the end of the passage P on the side of the electrical component box 80 is extended to the main body opening 87 of the electrical component box 80, or a passage extending from the main body opening 87 of the electrical component box 80 is generated to generate an electrical component box of the passage P. For example, the passage P and the internal space of the electrical component box 80 may be connected continuously by extending to the end on the 80 side. In this case, a tube for double insulation, which is necessary in the wiring between the passage P and the electrical component box 80, becomes unnecessary.

(9-8) Modification H
In the above embodiment, the case where the electrical component main body such as the drain pump main body 46b and the float switch main body 48b and the electrical component box 80 are arranged on the opposite side via the drain pan 40 and the bell mouth 45 has been described as an example. .

  However, such an electrical component main body and the electrical component box 80 may be disposed only through the bell mouth 45 or only through the drain pan 40.

(9-9) Modification I
In the said embodiment, the case where the channel | path P was provided so that it extended linearly was mentioned as an example, and was demonstrated.

  However, such a passage P is not limited to a linear shape, and may be provided in a substantially arc shape so as to surround the suction passage 35a between the drain pan 40 and the bell mouth 45, for example. . In this case, for example, even if an electrical component is disposed at the end opposite to the electrical component box 80 (the end on the side plate 34b side), such a substantially arc-shaped passage is used. Wiring can be led to the electrical component box 80.

(Other)
The above embodiment and its modifications are merely examples of the present invention and do not limit the present invention. In addition, the present invention also applies to embodiments obtained by appropriately combining the above-described embodiment and its modifications within the scope that can be realized by those skilled in the art using technical common sense as of the filing of the present application without departing from the gist of the present invention. include.

  The indoor unit of the air conditioner according to the present invention can make the connection wiring difficult to touch while eliminating the need for a member for fixing the connection wiring. This is particularly useful when used as an indoor unit of an air conditioner equipped with connected electrical components.

1 Air conditioner 4 Indoor unit (indoor unit)
40 Drain pan 41 Indoor fan (fan)
42 Indoor heat exchanger (heat exchanger)
45 Bellmouth 45c Guard rib (restraint structure)
46 Drain pump (electric parts)
46a Drain pump wiring (connection wiring)
46b Drain pump body (electric parts body)
48 Float switch (electric parts)
48a Float switch wiring (connection wiring)
48b Float switch body (electric parts body)
80 Electrical component box 245c Guard rib (restraint structure)
204, 304, 404 Indoor unit 445a Passage inner wall plate (inhibition structure)
D1 entrance gap (inlet)
D2 Passage depth gap (gap generated at a place other than the entrance)
P passage

JP 2001-355870 A

Claims (5)

In the indoor unit (4, 204, 304, 404) of the air conditioner (1) installed on the ceiling and having a heat exchanger (42) and a fan (41),
A bell mouth (45) for directing air flow to the fan;
An electrical component (46, 48) having an electrical component main body (46b, 48b) and a connection wiring (46a, 48a) extending from the electrical component main body and provided in a space in which the heat exchanger and the fan are arranged When,
A drain pan (40) disposed below the heat exchanger and receiving drain water generated in the heat exchanger;
An electrical component box (80) having a substrate (81) connected to the electrical component body through the connection wiring;
With
A passage (P) is formed in at least a part between the drain pan and the bell mouth,
The connection wiring extends from the electrical component main body to the substrate by passing through the passage.
Air conditioner indoor unit. The passage has a suppression structure (45c, 245c, 445a) that suppresses the connection wiring from moving outside the passage.
The indoor unit (4, 204, 404) of the air conditioning apparatus according to claim 1. At least one of the bell mouth and the drain pan has a rib (45c, 245c) for configuring the suppression structure.
The indoor unit (4, 204) of the air conditioning apparatus according to claim 2. The suppression structure (45c, 245c, 445a)
In a state where at least one of the bell mouth and the drain pan is elastically deformed to generate an inlet (D1) for allowing the connection wiring to enter the passage,
Suppressing the connection wiring from entering the gap (D2) between the bell mouth and the drain pan and generated at a place other than the entrance;
The indoor unit (4, 204, 404) of the air conditioning apparatus according to any one of claims 2 and 3. The electrical component box and the electrical component are disposed across the drain pan and / or the bell mouth,
The indoor unit (4, 204, 304, 404) of the air conditioning apparatus according to any one of claims 1 to 4.

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