JP4187031B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner equipped with an electrical component box.

  In general, an indoor unit of an air conditioner includes a heat exchanger and a blower fan in an outer case, and the air sucked from the suction port by the blower fan is cooled or heated by passing through the heat exchanger, and then blown. It blows out into the room from the exit.

  In this type of indoor unit, there are many cases in which an electrical component box with a narrow and high dimension is accommodated in a narrow space on the side of, for example, a heat exchanger and a blower fan in an exterior case. In the electric component box, an electric component substrate on which various electric components are mounted is vertically installed.

  Some electrical component boxes are provided with an opening / closing lid on the side surface thereof, and the opening / closing lid is exposed to the outside by removing the outer case. When the opening / closing lid is opened, maintenance such as repair or replacement of the electrical board can be performed.

  However, since the height of various electrical components mounted on the electrical board varies, the electrical component box with the electrical board mounted vertically is the tallest, that is, the horizontal direction from the board mounting surface (width direction). The width dimension is set on the basis of the electric part that has the largest overhanging amount. Therefore, there is a problem that a wasteful space is easily generated in the electrical component box, the width dimension of the electrical component box is increased, and the downsizing of the indoor unit is hindered.

  Therefore, for example, as shown in FIG. 10, in the electrical component box 4 housed in the narrow space on the side of the heat exchanger 2 and the blower fan 3 in the outer case 1, the heat exchanger 2 and the blower fan 3 An opening / closing lid 5 is provided on a side surface facing the side portion, and an electrical component board 7 is arranged in a vertically placed state along the side surface portion 6 facing the opening / closing lid 5, and various electrical components 8 of the electrical component substrate 7. By forming the opening / closing lid 5 in an uneven shape in accordance with the amount of protrusion from the board mounting surface, unnecessary space in the electrical component box 4 is eliminated, and the recess of the opening / closing lid 5 is used to remove the blower fan 3. There has been proposed an indoor unit having a structure in which a fan motor is effectively arranged to reduce the width of the indoor unit, thereby reducing the size of the indoor unit. (For example, refer to Patent Document 1.)

Japanese Patent No. 3154923

  However, although the structure shown in FIG. 10 contributes to the downsizing of the indoor unit, there is a problem that work efficiency is adversely affected during maintenance such as repair or replacement of the electrical board 7 in the electrical equipment box 4. It was. That is, in the case of the structure shown in FIG. 10, if the exterior case 1 is removed and the electrical component box 4 is not removed, the open / close lid 5 is opened and the electrical board 7 in the electrical component box 4 can be maintained. I was forced to do troublesome work.

  In addition, in the past, the width dimension of the fan rotor and the fan motor in the blower fan has been the largest obstruction factor in suppressing the width dimension of the indoor unit, but in recent years, the fan motor has been downsized. For this reason, the width dimension of the heat exchanger is becoming the biggest obstacle. However, in the case of the structure shown in FIG. 10, since the fan motor of the blower fan is arranged in the recess of the opening / closing lid 5, it is not possible to cope with the recent situation as described above, and the width of the indoor unit There was room for improvement in terms of size reduction.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to reduce the size of the indoor unit by improving the structure of the electrical component box in the indoor unit of the air conditioner. At the same time, it is to improve maintainability of the electrical board in the electrical component box.

Therefore, the indoor unit of the air conditioner according to claim 1 is one in which the electrical component box 30 is accommodated in the exterior case 10, and the electrical component box 30 is mounted with various electrical components 31a, 31b,. The box body 33 includes an opening / closing lid 34 arranged along the inner surface of the exterior case 10, and the opening / closing lid 34. And an inclined surface portion 35 that is opposed to each other and is inclined so as to narrow the surplus space of the accommodating space 45 in the box body 33, and the electric component board 32 includes various electric components 31a, 31b,. The electric circuit board 32 of the electric component box 30 is arranged so as to protrude toward the 34 side, and the electric circuit board 32 of the electric component box 30 has a large amount of protrusion toward the opening / closing lid 34 side. Concentration of parts 31a A first portion 51 mounted and a second portion 52 on which electric parts 31b,... The first portion 51 of the electrical board 32 is arranged corresponding to the large accommodating portion 46 in which the gap between the opening / closing lid 34 and the inclined surface portion 35 is wide, and the accommodating space 45 in the box body 33 is disposed. The second portion 52 of the electrical board 32 is disposed corresponding to the small accommodating portion 47 in which the gap between the opening / closing lid 34 and the inclined surface portion 35 is narrow .

  Further, in claim 2, the opening / closing lid 34 of the box body 33 in the electrical component box 30 is arranged along the inner surface of the side wall portion 23 of the exterior case 10, and the inclined surface portion of the box body 33 in the electrical component box 30. 35 is arranged so as to face the side portion of the heat exchanger 11 accommodated in the outer case 10, and the refrigerant pipe 22 of the heat exchanger 11 is formed in the empty space 60 generated by the inclination of the inclined surface portion 35. Has been placed. In claim 3, the inclined surface portion 35 of the box body 33 in the electrical component box 30 is inclined so that the upper side thereof is close to the opening / closing lid 34.

The indoor unit of the air conditioner according to claim 4 is configured such that an electrical component box 30 is accommodated in an exterior case 10, and the electrical component box 30 is an electrical component in which various electrical components 31a, 31b,. A board 32 and a box main body 33 that accommodates the electrical board 32 are provided. The box main body 33 is disposed so as to face the open / close lid 34 and an open / close lid 34 disposed along the inner surface of the exterior case 10. And an inclined surface portion 35 that is inclined so as to narrow the surplus space of the accommodating space 45 in the box body 33, and the electrical board 32 has various electric components 31a, 31b,. The opening / closing lid 34 of the box body 33 in the electrical component box 30 extends along the inner surface of the side wall 23 of the outer case 10. And the above The inclined surface portion 35 of the box body 33 in the product box 30 is arranged so as to face the side portion of the heat exchanger 11 accommodated in the outer case 10, and the empty space 60 generated by the inclination of the inclined surface portion 35 is provided. The refrigerant pipe 22 of the heat exchanger 11 is arranged, and the inclined surface portion 35 of the box body 33 in the electrical component box 30 is inclined so that the upper side thereof is close to the opening / closing lid 34. .

In the indoor unit of the air conditioner according to the first aspect , the opening / closing lid of the box body in the electrical component box is exposed to the outside by removing the outer case. Therefore, without removing the entire electrical component box, it is only necessary to open the open / close lid that is exposed to the outside, and in the housing space in the box body, the various electrical components project toward the open / close lid side. Repair and replacement can be easily performed, and maintainability can be improved. In addition, because the surplus space of the storage space in the box body is narrowed by the inclined surface of the box body in the electrical component box, the width dimension of the electrical component box is partially reduced to achieve downsizing of the indoor unit can do. In particular, when the electrical board is accommodated in the housing space of the box body in the electrical component box, the first part where the electrical components having a large overhanging amount are concentrated and mounted is used as the large housing portion, and the electrical component with a small overhanging amount is provided. By arranging the second portions that are mounted in a concentrated manner so as to correspond to the small accommodating portions, it is possible to effectively narrow the surplus space by effectively using the accommodating space.

  Moreover, in invention of Claim 2, the refrigerant | coolant piping of a heat exchanger is arrange | positioned using the empty space produced by the inclination of the inclined surface part of the box main body in an electrical component box, and the width dimension of an indoor unit in recent years is arrange | positioned. Absorbing the width dimension of the heat exchanger, which is the greatest impediment to suppression, the width dimension of the indoor unit can be effectively suppressed, and the downsizing of the indoor unit can be more reliably realized.

Furthermore, in the invention of claim 3, the inclined surface portion of the box body in the electrical component box is inclined so that the upper side thereof is close to the opening / closing lid, so that the maintenance of the electrical board arranged along the inclined surface portion is performed. When the opening / closing lid is removed, it becomes easier for the operator who works from the obliquely lower side on the side of the indoor unit to see the electrical board further, and the maintainability can be further improved.

According to the indoor unit of the air conditioner of the fourth aspect, by removing the outer case, the opening / closing lid of the box body in the electrical component box is exposed to the outside. Therefore, without removing the entire electrical component box, it is only necessary to open the open / close lid that is exposed to the outside, and in the housing space in the box body, the various electrical components project toward the open / close lid side. Repair and replacement can be easily performed, and maintainability can be improved. In addition, because the surplus space of the storage space in the box body is narrowed by the inclined surface of the box body in the electrical component box, the width dimension of the electrical component box is partially reduced to achieve downsizing of the indoor unit can do. In addition, by utilizing the empty space generated by the inclination of the inclined surface portion of the box body in the electrical component box, the refrigerant pipe of the heat exchanger is arranged, so that the maximum inhibition in suppressing the width dimension of the indoor unit in recent years By absorbing the width dimension of the heat exchanger, which is a factor, the width dimension of the indoor unit can be effectively suppressed, and the downsizing of the indoor unit can be more reliably realized.

  Furthermore, when the open / close lid is removed during the maintenance of the electrical board disposed along the inclined surface portion by inclining the inclined surface portion of the box body in the electrical component box so that the upper side thereof is close to the open / close lid. In addition, it is easier for the operator who works from the obliquely lower side on the side of the indoor unit to see the electrical board, and the maintainability can be further improved.

  An embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the indoor unit of an air conditioner according to an embodiment of the present invention includes a heat exchanger 11 and a blower fan 12 in an outer case 10, and is blown from a suction port 13 by the blower fan 12. The sucked air is cooled or heated by passing through the heat exchanger 11, and blown out from the outlet 14 formed on the lower front side of the outer case 10.

  The outer case 10 is detachably attached to the bottom frame 20 on which the heat exchanger 11 and the blower fan 12 are mounted. In the heat exchanger 11, a refrigerant pipe 22 is passed through a fin 21 formed in an inverted V shape, and a blower fan 12 is disposed so as to be surrounded by the fin 21.

  And in the exterior case 10, as shown in FIG. 3, the electrical component box 30 is accommodated in the side of the heat exchanger 11 and the ventilation fan 12. As shown in FIG. Specifically, the electrical component box 30 is arranged in a narrow space between the heat exchanger 11 and the blower fan 12 and one side wall portion 23 of the outer case 10.

  4 to 6 show the structure of the electrical component box 30. FIG. The electrical component box 30 includes an electrical component substrate 32 on which various electrical components 31a, 31b,... Are mounted, and a box body 33 that accommodates the electrical component substrate 32 in a vertically placed state.

  The box body 33 is disposed so as to be opposed to the first side surface portion 34 and the first side surface portion 34 arranged in the vertical direction along the inner surface of the side wall portion 23 of the exterior case 10. A second side surface portion 35 disposed so as to face the first portion, a top surface portion 37 disposed laterally across the upper end portions of the first side surface portion 34 and the second side surface portion 35, and a first side surface portion. 34 and a lower surface portion 38 disposed laterally across the lower end portion of the second side surface portion 35, and a front surface disposed vertically between the first side surface portion 34 and the front end portion of the second side surface portion 35. And a rear surface portion 40 disposed in the vertical direction across the rear end portions of the first side surface portion 34 and the second side surface portion 35. Note that a reception display unit 42 corresponding to the display panel 41 provided in the outer case 10 is connected to the lower surface unit 38 via an arm 43.

  The first side surface portion 34 of the box body 33 is constituted by an opening / closing lid that opens and closes the storage space 45 in the box body 33, and the second side surface portion 35 disposed opposite to the opening / closing lid 34 is provided. It is an inclined surface part. The inclined surface portion 35 is inclined so that the upper side thereof is close to the opening / closing lid 34. Accordingly, in the storage space 45 in the box body 33, the distance between the open / close lid 34 and the inclined surface portion 35 becomes narrower as it goes upward.

  As shown in FIG. 5, the electrical board 32 includes a first part 51 on which tall electrical components 31 a... With a large projecting amount from the board mounting surface 50 are mounted in a concentrated manner, and from the board mounting surface 50. And a second portion 52 on which short electrical components 31b... Having a small overhang amount are mounted in a concentrated manner.

  The electrical board 32 is attached with an inclination along the inclined surface portion 35 so that the electrical components 31a, 31b,... Protrude in the lateral direction (width direction) toward the opening / closing lid 34 side of the box body 33. It has been. In the mounted state of the electrical board 32, the first portion 51 corresponds to the large accommodating portion 46 on the lower side in which the gap between the opening / closing lid 34 and the inclined surface portion 35 is wide in the accommodating space 45 in the box body 33. The second portion 52 is arranged corresponding to the upper small accommodating portion 47 in which the gap between the opening / closing lid 34 and the inclined surface portion 35 is narrowed in the accommodating space 45 in the box body 33.

  That is, in this electrical component box 30, the inclined surface portion 35 of the box body 33 facing the side of the heat exchanger 11 and the electrical board 32 are between the heads of the electrical components 31 a, 31 b. Is inclined toward the opening / closing lid 34 so as to narrow the surplus space of the storage space 45 in the box body 33, thereby partially suppressing the width dimension of the electrical component box 30.

  7 to 9 show the internal structure of the indoor unit with the outer case 10 removed. As shown in FIGS. 7 and 8, a part of the refrigerant pipe 22 of the heat exchanger 11 is arranged in the empty space 60 generated by the inclination of the inclined surface portion 35 of the box body 33 in the electrical component box 30 described above. Yes. Thus, in recent years, the width dimension of the heat exchanger 11 which is the greatest hindrance factor in suppressing the width dimension of the indoor unit is absorbed, the width dimension of the indoor unit is effectively suppressed, and the indoor unit is reduced in size. Realized.

  In the indoor unit configured as described above, when the electrical board 32 of the electrical component box 30 is repaired or replaced, the outer case 10 is first removed from the bottom frame 20. At this time, as shown in FIGS. 8 and 9, the opening / closing lid 34 of the electrical component box 30 is exposed to the outside. Then, by removing the opening / closing lid 34 and opening the storage space 45 in the box body 33, the electrical board 32 is exposed to the outside, and maintenance such as repair or replacement can be performed. Therefore, it is not necessary to remove the entire electrical component box 30 and the maintainability can be improved. In addition, the electrical board 32 that is inclined along the inclined surface portion 35 of the box body 33 is easier to see from the operator who works from the obliquely lower side on the side of the indoor unit, so that maintenance is further facilitated. I have to. When the repair or replacement of the electrical board 32 is completed, the open / close lid 34 may be attached and the exterior case 10 may be attached to the bottom frame 20.

  Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

It is a front view of the indoor unit of the air conditioner which concerns on one Embodiment of this invention. It is the longitudinal cross-sectional view similarly. It is the schematic of the indoor unit which shows arrangement | positioning of a heat exchanger, a ventilation fan, and an electrical component box. It is a front view of an electrical component box. It is the longitudinal cross-sectional view similarly. It is the side view similarly. It is a front view which shows the internal structure of the indoor unit which removed the exterior case. It is the principal part enlarged view similarly. It is the side view similarly. It is the schematic of the indoor unit which shows arrangement | positioning of the conventional heat exchanger, a ventilation fan, and an electrical component box.

Explanation of symbols

  10..Exterior case, 11..Heat exchanger, 22..Refrigerant piping, 23..Side wall part, 30..Electrical component box, 31a..Electric component with large overhang, 31b..Overhang Small electrical parts, 32 ... Electric circuit board, 33 ... Box body, 34 ... Open / close lid, 35 ... Slant surface part, 45 ... Storage space, 46 ... Large storage part, 47 ... Small storage part, 51 ...・ First part, 52 ・ ・ Second part, 60 ・ ・ Free space

Claims (4)

In the indoor unit of the air conditioner in which the electrical component box (30) is accommodated in the outer case (10), the electrical component box (30) is an electrical component in which various electrical components (31a) (31b) are mounted. A board (32) and a box body (33) for accommodating the electrical board (32) are provided. The box body (33) is an open / close lid (34) arranged along the inner surface of the exterior case (10). ) And an inclined surface portion (35) that is disposed so as to face the opening / closing lid (34) and is inclined so as to narrow the excess space of the accommodation space (45) in the box body (33), electric substrate (32) is disposed inclined along the various electrical components (31a) (31b) · · are as projecting toward the lid (34) side the inclined surface portion (35) Furthermore, the electrical board (32) of the electrical component box (30) is The first part (51) on which the electrical parts (31a) with a large protruding amount toward the opening / closing lid (34) are mounted in a concentrated manner and the protruding amount toward the opening / closing lid (34) are small. And a second part (52) on which the electric parts (31b) are concentratedly mounted, and the opening / closing lid (34) and the inclined surface part (35) in the housing space (45) in the box body (33). The first portion (51) of the electrical board (32) is arranged corresponding to the large accommodating portion (46) having a large interval with the housing space (45) in the box body (33). The second part (52) of the electrical board (32) is disposed corresponding to the small accommodating part (47) in which the gap between the opening / closing lid (34) and the inclined surface part (35) is narrow. An air conditioner indoor unit characterized by the above. An open / close lid (34) of the box body (33) in the electrical component box (30) is arranged along the inner surface of the side wall (23) of the exterior case (10), and the box body in the electrical component box (30). The inclined surface portion (35) of (33) is arranged so as to face the side portion of the heat exchanger (11) accommodated in the exterior case (10), and is generated by the inclination of the inclined surface portion (35). refrigerant pipe (22) is the indoor unit of the arrangement claims 1 Symbol placement of the air conditioner of the heat exchanger (11) to the free space (60). The indoor unit of an air conditioner according to claim 2, wherein the inclined surface portion (35) of the box body (33) in the electrical component box (30) is inclined so that an upper side thereof is close to the opening / closing lid (34). In the indoor unit of the air conditioner in which the electrical component box (30) is accommodated in the outer case (10), the electrical component box (30) is an electrical component in which various electrical components (31a) (31b) are mounted. A board (32) and a box body (33) for accommodating the electrical board (32) are provided. The box body (33) is an open / close lid (34) arranged along the inner surface of the exterior case (10). ) And an inclined surface portion (35) that is disposed so as to face the opening / closing lid (34) and is inclined so as to narrow the excess space of the accommodation space (45) in the box body (33), The electrical board (32) is inclined along the inclined surface portion (35) so that the various electric components (31a) (31b)... Project toward the opening / closing lid (34). Open and close the box body (33) in the electrical component box (30) (34) is disposed along the inner surface of the side wall (23) of the outer case (10), and the inclined surface portion (35) of the box body (33) in the electrical component box (30) is connected to the outer case (10). The refrigerant pipe of the heat exchanger (11) is arranged in the empty space (60) generated by the inclination of the inclined surface portion (35). (22) is arranged, and the inclined surface part (35) of the box body (33) in the electrical component box (30) is arranged so that the upper side thereof is close to the open / close lid (34). An air conditioner indoor unit.