ES2647267T3 - Indoor unit of an air conditioner - Google Patents

Abstract

An indoor unit of an air conditioner including an outer box (10) in which an electrical component box (30) is housed, including the electrical component box (30): an electrical component plate (32) having components electrical (31a, 31b) mounted thereon, and a box body (33) housing the electrical component plate (32), including the box body (33): an openable cover (34) placed along a inner surface of the outer box (10), and a part of tilted surface (35) that is positioned so that it is in front of the opening lid (34) and that is tilted relative to a vertical plane in order to narrow a extra space of a housing space (45) in the box body (33), characterized in that the electrical component plate (32) is positioned tilted along the tilted surface part (35) so that the electrical components (31a, 31b) protrude towards the opening lid (3 4).

Description

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DESCRIPTION

Indoor unit of an air conditioner Technical field

The present invention relates to an indoor unit of an air conditioner in which a layer of electrical components is installed.

Background of the invention

In general, an indoor unit of an air conditioner, which has a heat exchanger and a blower fan in an outer case, cools or heats the air taken by the blowing fan through air inlets, passing air through the heat exchanger, and then expels the air through air vents to a room.

In indoor units of this type, in most cases, a box of electrical components that is small in width and a certain height is housed in a space that is small in width and is on the side side of the heat exchanger and The blowing fan, for example, in the outer box, and a plate of electrical components, on which several electrical components are mounted, is installed vertically in the box of electrical components.

Among the layers of electrical components are those provided with an openable lid on its side face, a cover that is exposed to the outside by removal of the outer box. Opening the openable lid allows maintenance, such as repair and replacement of the electrical component plate.

However, the electrical components mounted on the electrical component plate have different heights and therefore the width of the electrical component box, in which the electrical component plate is installed longitudinally, is placed on the basis of an electrical component that has the largest height, that is, the greatest amount of projection in one direction to one side (width direction) from a plate mounting surface. This causes the problem that useless space in the electrical component box tends to occur and the width of the electrical component box could increase, thus preventing the reduction of the size of the indoor unit.

An indoor unit has been proposed, for example, as shown in Figure 10, which has a configuration in which a box of electrical components 4 housed in a space of small width on the side side of a heat exchanger 2 and a fan blower 3 in an outer case 1 is provided with an openable lid 5 on its side face that faces lateral parts of the heat exchanger 2 and the blower fan 3, in which a plate of electrical components 7 is positioned vertically along a side part 6 opposite the opening lid 5, in which the opening lid 5 is not uniformly formed according to the amounts that the electrical components 8 protrude from a mounting surface of the electrical component plate 7 in order to eliminate useless spaces in the electrical component box 4, and in which the reduction of the width and, therefore, of the size of the indoor unit, is achieved by the effective arrangement of a m award of the blower fan 3 using a recess in the opening cover 5 (see JP 3154923 b2).

In addition, the related prior art can be seen in JP 2005 076995 A which describes an indoor unit for an air conditioner and equipped with an electric unit that is capable of facilitating the mounting of a substrate in an electrical equipment box. JP 2005 079665 A thus describes an indoor unit for an air conditioner according to the preamble of claim 1. Document JP 04 009532 A describes an air conditioner to simplify and ensure the introduction of a substrate in an electrical box.

Invention summary

Technical problem

The configuration shown in Figure 10, however, contributes to the reduction of the size of the indoor unit, but it causes the problem that work efficiency deteriorates in maintenance, such as repair and replacement of the electrical component board 7 in the electrical component box 4. Namely, in the configuration shown in Figure 10, the opening of the opening lid 5 and the maintenance of the electrical component plate 7 in the electrical component box 4 cannot be carried It is carried out without the extraction of the outer box 1 and also the removal of the box of electrical components 4, and thus it is necessary to perform cumbersome tasks.

Although the widths of a fan rotor and a motor of a blower fan have been conventionally the biggest obstacle to reducing the width of an indoor unit, the width of a heat exchanger has been the biggest obstacle in recent years because the Fan motor size reduction has progressed. However, the configuration shown in Figure 10, which has the blower fan motor placed in the

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recessing of the openable lid 5, cannot cope with such a situation in recent years as described above and there is room to improve the reduction of the width of the indoor unit.

The invention was carried out in order to solve the conventional problems described above, and its object is to improve a structure of a box of electrical components in an indoor unit of an air conditioner, thereby achieving a reduction in the size of the indoor unit , and to improve the maintenance environment of an electrical component plate in the electrical component box.

Problem solution

In order to achieve the object, an indoor unit of an air conditioner is provided in which an electrical component box is housed in an external box, including the electrical component box:

an electrical component board that has electrical components mounted on it, and

a box body that houses the electrical component plate,

including the box body:

an openable lid placed along an inner surface of the outer case, and

a tilted surface part that is positioned so that it is in front of the openable lid and that is tilted relative to a vertical plane in order to narrow an extra space of a housing space in the box body, where

The electrical component plate is positioned tilted along the tilted surface portion so that the electrical components protrude toward the openable lid.

According to the indoor unit of the air conditioner of this invention, the openable lid of the box body of the electrical component box is exposed to the outside by removal of the outer box. Therefore, the single opening of the open lid exposed to the outside without removing the entire electrical component box makes it possible to easily repair and replace the electrical component plate that is positioned so that the electrical components protrude towards the lid. Openable in the housing space in the case body, and thus the maintenance environment can be improved.

In addition, the extra space of the housing space in the box body is narrowed by the tilted surface portion of the box body of the electrical component box, so that the widths of the electrical component box can be partially reduced and so that the reduction of the indoor unit size can be achieved.

In one embodiment, the electrical component plate in the electrical component box includes:

a first section in which the electrical components that protrude very much towards the opening lid are compactly mounted, and

a second section in which the electrical components that protrude less towards the openable lid than the electrical components are compactly mounted, where

The first section of the electrical component plate is positioned corresponding to a large housing part that has great distances between the openable lid and the surface part tilted in the housing space in the box body, and where the second section of the Electrical component plate is positioned corresponding to a small housing part that has smaller distances between the openable lid and the tilted surface part than the large housing part in the housing space in the case body.

For the housing of the electrical component plate in the housing space in the box body of the electrical component box, according to this embodiment, the first section, in which the protruding electrical components are compactly mounted, and the second section, in which the little protruding electrical components are mounted in a compact manner, are placed corresponding to the large housing part and the small housing part, respectively, so that the effective use of the housing space can be achieved and the considerable reduction of extra space.

In one embodiment, the openable lid of the box body of the electrical component box is placed along an inner surface of a side wall of the outer box, where the tilted surface portion of the box body of the component box Electrical is positioned so that it looks at a side part of a heat exchanger housed in the outer case, and where the heat exchanger refrigerant tubes are placed in an empty space produced by the tilting of the tilted surface section.

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According to this embodiment, the width of the heat exchanger, which has been the biggest obstacle in recent years for reducing the width of the indoor unit, is absorbed by the arrangement of the refrigerant tubes of the heat exchanger using the empty space produced by the tilting of the tilted surface portion of the box body in the electrical component box, so that the width of the indoor unit can be effectively reduced and so that the reduction of the size of the indoor unit can be achieved with greater reliability .

In one embodiment, the tilted surface part of the box body of the electrical component box is tilted so that the upper part of the tilted surface part is closer to the openable lid than the lower part of the tilted surface part .

According to this embodiment, in which the tilted surface part of the box body of the electrical component box is tilted so that the upper part of the tilted surface part is closer to the opening lid than the lower part of the part of tilted surface, the plate of electrical components placed along the part of tilted surface can be seen more easily by the operator who performs an operation from below diagonally on a side side of the indoor unit, once the openable lid is removed when performing maintenance of the electrical component board, and thus the maintenance environment can be further improved.

Brief description of the drawings

Figure 1 is a front view of an indoor unit of an air conditioner according to an embodiment of the invention.

Figure 2 is a vertical sectional view of the indoor unit of the embodiment.

Figure 3 is a schematic diagram of the indoor unit illustrating the arrangement of a heat exchanger, a blower fan, and a box of electrical components in the indoor unit.

Fig. 4 is a front view of the electrical component box of the embodiment.

Fig. 5 is a vertical sectional view of the electrical component box of the embodiment.

Fig. 6 is a side view of the electrical component box of the embodiment.

Figure 7 is a front view showing an internal structure of the indoor unit from which an outer box has been removed.

Figure 8 is an enlarged view of main parts of the indoor unit.

Figure 9 is a side view of the indoor unit.

And Figure 10 is a schematic diagram of an indoor unit illustrating the conventional arrangement of a heat exchanger, a blower fan and an electrical component box.

Description of realizations

An embodiment of the invention will be described in detail with reference to the drawings. As shown in Figures 1 and 2, an indoor unit of an air conditioner according to the embodiment of the invention has a heat exchanger 11 and a blowing fan 12 in an outer case 10, cools or heats air taken by the blowing fan 12 through inlet holes 13 by passing the air through the heat exchanger 11, and then expelling the air through air outlets 14 formed on the front face of the bottom of the outer case 10.

The outer case 10 is detachably mounted on a lower frame 20 that has the heat exchanger 11 and the blower fan 12 fixed thereto. The heat exchanger 11 has a fin 21 that is similar in shape to an inverted letter "V" and is pierced by coolant tubes 22, and the blower fan 12 is positioned so that a portion of it is surrounded by fin 21 .

In the outer case 10, as shown in FIG. 3, a box of electrical components 30 is housed on the side side of the heat exchanger 11 and the blower fan 12. Specifically, the box of electrical components 30 is placed in a space of short width between the heat exchanger 11, the blower fan 12 and a side wall 23 of the outer case 10.

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Figures 4 to 6 show a structure of the electrical component box 30. The electrical component box 30 has an electrical component plate 32 having several electrical components 31a, 31b mounted therein and a box body 33 housing the plate of electrical components 32 in an upright position.

The case body 33 is comprised of a first side surface portion 34 that extends vertically along an inner surface of the side wall 23 of the outer case 10, a second side surface portion 35 arranged so as to face of the first side surface part 34 and so as to look at a side part of the heat exchanger 11, an upper surface part 37 extending laterally between upper ends of the first side surface part 34 and the second surface part side 35, a lower surface part 38 extending laterally between lower ends of the first side surface part 34 and the second side surface part 35, a front surface part 39 extending between front ends of the first part of lateral surface 34 and the second part of lateral surface 35 and extending vertically, and a rear surface part 40 q It extends between rear ends of the first side surface portion 34 and the second side surface portion 35 and which extends vertically. A receiving screen part 42 corresponding to a display panel 41 disposed in the outer case 10 is connected through an arm 43 to the lower surface part 38.

The first side surface part 34 of the box body 33 is composed of an open lid that opens or closes a housing space 45 in the box body 33, and the second side surface part 35 that is positioned so that it is opposite of the openable cover 34 is formed as a tilted surface part relative to a vertical plane. The tilted surface part 35 is tilted so that the upper part of the tilted surface part 35 is closer to the openable cover 34 than the lower part of the tilted surface part 35. Accordingly, in the housing space 45 in the case body 33, the distances between the opening lid 34 and the tilted surface portion 35 decrease in an upward direction.

As shown in Figure 5, the electrical component plate 32 has a first section 51 in which the high electrical components 31a that protrude greatly from a mounting surface 50 of the plate, and a second section 52 are compactly mounted. in which the small electrical components 31b that protrude less from the mounting surface 50 of the plate than the electrical components 31a that protrude greatly are compactly mounted.

The electrical component plate 32 is fixedly tilted along the tilted surface portion 35 so that the electrical components 31a, 31b protrude in a lateral direction (width direction) towards the opening lid 34 of the case body 33 In a state in which the electrical component plate 32 is fixed, the first section 51 is positioned corresponding to a large housing bottom portion 46 that has great distances between the opening cover 34 and the tilted surface portion 35 in the space housing 45 in the box body 33, and the second section 52 is positioned corresponding to a small upper housing part 47 which has small distances between the opening lid 34 and the tilted surface portion 35 in the housing space 45 in the box body 33.

In the electrical component box 30, namely, the tilted surface portion 35 of the housing body 33 oriented to the side parts of the heat exchanger 11 and the electrical component plate 32 is tilted towards the opening lid 34 in order to narrowing an extra space of the housing space 45 in the box body 33 that occurs between the heads of the electrical components 31a, 31b and the openable cover 34, and the widths of the electrical component box 30 are thereby partially reduced.

Figures 7 to 9 show an internal structure of the indoor unit from which the outer case 10 has been removed. As shown in Figures 7 and 8, a portion of the refrigerant tubes 22 of the heat exchanger 11 is placed in an empty space 60 produced by the tilting of the tilted surface portion 35 of the case body 33 in the electrical component box 30. Thus, the width of the heat exchanger 11, which has been the biggest obstacle in recent years, has been absorbed. for reducing the width of the indoor unit, so that the width of the indoor unit is effectively reduced and so that the size of the indoor unit is achieved.

When the electrical component plate 32 in the electrical component box 30 is repaired or replaced in the indoor unit having the previous configuration, the outer box 10 is initially removed from the lower frame 20. As shown in Figures 8 and 9, The opening cover 34 of the electrical component box 30 is then exposed to the outside. Once the housing space 45 in the case body 33 is opened by the removal of the opening lid 34, the electrical component plate 32 is exposed to the outside so that maintenance, such as repair and replacement, can be carried out. Therefore, the entire electrical component box 30 must not be removed and the maintenance environment can be improved. In addition, the electrical component plate 32 placed with the tilting along the tilted surface portion 35 of the box body 33 can easily be seen by the operator performing a diagonal operation below on the side side of the indoor unit, and so maintenance is made easier. Once the repair or replacement of the electrical component plate 32 is completed, the openable cover 34 can be mounted and the outer case 10 can be mounted on the lower frame 20.

Although the specific embodiment of the invention has been described above, the invention is not limited to the embodiment, but can be carried out with various modifications within the scope of the invention defined by the appended claims.

Claims (4)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 1. An indoor unit of an air conditioner including an outer box (10) in which an electrical component box (30) is housed, including the electrical component box (30): an electrical component plate (32) having electrical components (31a, 31b) mounted therein, and a box body (33) housing the electrical component plate (32), including the box body (33): an openable lid (34) placed along an inner surface of the outer case (10), and a tilted surface part (35) that is positioned so that it is in front of the opening lid (34) and that is tilted relative to a vertical plane in order to narrow an extra space of a housing space (45) in the box body (33), characterized in that The electrical component plate (32) is positioned tilted along the tilted surface portion (35) so that the electrical components (31a, 31b) protrude towards the openable cover (34). 2. The indoor unit of the air conditioner according to claim 1, wherein The electrical component plate (32) in the electrical component box (30) includes: a first section (51), in which the electrical components (31a) that protrude very much towards the openable cover (34) are compactly mounted, and a second section (52) in which the electrical components (31b) that protrude less towards the openable cover (34) than the electrical components (31a) that protrude much towards the openable lid (34), where are compactly mounted The first section (51) of the electrical component plate (32) is positioned corresponding to a large housing part (46) that has large distances between the opening lid (34) and the tilted surface part (35) in the space housing (45) in the case body (33), and where the second section (52) of the electrical component plate (32) is placed corresponding to a small housing part (47) that has smaller distances between the openable lid (34) and the tilted surface part (35) than the large housing part (46) in the housing space (45) in the box body (33). 3. The indoor unit of the air conditioner according to claim 1 or 2, wherein The opening lid (34) of the box body (33) of the electrical component box (30) is placed along an inner surface of a side wall (23) of the outer box (10), where the part of tilted surface (35) of the case body (33) of the electrical component box (30) is positioned so that it looks at a side part of a heat exchanger (11) housed in the outer case (10), and where Refrigerant tubes (22) of the heat exchanger (11) are placed in an empty space (60) produced by the tilting of the tilted surface section (35). 4. The indoor unit of the air conditioner according to claim 3, wherein the tilted surface part (35) of the box body (33) of the electrical component box (30) is tilted so that the upper part of the tilted surface part (35) is closer to the opening lid (34 ) than the lower part of the tilted surface part (35).