JP5401355B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an air conditioner that sucks room air from a suction grill provided on a decorative panel connected to a casing, heat-exchanges inside the casing, and then blows air into the room from an outlet provided on the decorative panel. The present invention relates to a structure of an indoor unit in an air conditioner that includes a centrifugal blower as a blower and that has an electrical component box that houses a control board or the like on the suction side of the centrifugal blower.

  An air conditioner includes a compressor that compresses a refrigerant in a refrigerant circulation channel in which the refrigerant is sealed, an indoor heat exchanger that exchanges heat between the refrigerant and indoor air, an expansion valve that decompresses the refrigerant, a refrigerant, It has a refrigeration cycle in which outdoor heat exchangers that exchange heat with the outside air are sequentially arranged. In the air conditioner, the indoor heat exchanger is stored in a casing of the indoor unit together with a blower that sends indoor air to the indoor heat exchanger.

  There are various types of such indoor units, but in recent years, especially in the field of business use, the casing is embedded in the ceiling, and air is sucked and blown out through a decorative panel installed on the ceiling surface. The so-called ceiling-embedded cassette type is the mainstream.

    12, FIG. 13 and FIG. 14 show an arrangement configuration diagram of each component in an indoor unit of an air conditioner related to the prior art, a partially enlarged view of the indoor unit, and a plan view of the indoor unit viewed from below. The indoor unit includes a decorative panel 1 and a housing 2 connected to the decorative panel 1. Here, a detachable suction grill 3 is provided in the central portion of the decorative panel 1, and in the configuration example shown in FIGS. 12 to 14, the suction grill 3 is a suction portion indicated by a vertical hatched portion in the central portion. It is formed from a cross 33 of the grill 3 and an outer peripheral frame 34 of the suction grill 3. Air is sucked from the crosspiece 33 portion of the suction grill 3. As shown in the figure, the decorative panel 1 is provided with an outlet 5 having a wind direction plate 4.

  By driving the motor 6 installed in the housing 2 and rotating the centrifugal blower 7 connected to the shaft of the motor 6, the indoor air is fed into the crosspiece 33 of the suction grill 3 as shown by an arrow 8 in FIG. 12. Then, the air is sucked into the centrifugal blower 7 through the filter 9 installed in the suction grill 3 and the bell mouth 10 installed in the housing 2, and after being heat-exchanged by the indoor heat exchanger 12 as indicated by an arrow 11, It blows out into the room from the mouth 5. In addition, a drain pan 13 for receiving dew condensation water generated in the indoor heat exchanger 12 during cooling is installed below the indoor heat exchanger 12. Further, the suction grill 3 can be detached from the decorative panel 1 together with the filter 9, and the filter 9 can be easily cleaned. 1 to 11 showing the present invention, the basic configuration of the indoor unit is substantially the same.

  Here, an electrical component box 14 containing a control board (not shown) for controlling the operation of the indoor unit is installed on the lower surface or the lower side of the bell mouth 10 (the electrical component box 14 is fixed to the drain pan 13. However, by opening the suction grill 3, the electrical component box 14 can be easily maintained. In addition, in order to arrange each component within a limited size, the electrical component box 14 is often arranged so as to block a part of the suction port 30 of the centrifugal blower 7. In such a case, the air flow sucked from below the electrical component box 14 and directed toward the suction port 30 of the centrifugal blower 7 is the end (side surface) of the lower surface of the electrical component box 14 as indicated by the arrow 15 in FIGS. The lower end portion 16) is peeled off, and a separation vortex is generated to disturb the air flow. When this disturbance reaches the centrifugal blower 7, there is a problem that noise increases.

  Therefore, the electrical component box is L-shaped, and the suction side surface of the electrical component box is constituted by two sides that are flat and orthogonal to ensure the storage area of the electrical component box, and the centrifugal blower inlet of the electrical component box 14 A proposal has been made to reduce the noise by increasing the distance between the side surface 30 and the suction port 30 of the centrifugal blower or the suction port of the bell mouth 10 (see, for example, Patent Document 1).

JP 2003-74900 A

  However, the electrical component box 14 shown in Patent Document 1 is often made of sheet metal to prevent the spread of fire to the outside when it is ignited from a control board or the like due to malfunction or aging deterioration. For example, manufacturing in a shape such as an L shape requires a complicated manufacturing process and leads to an increase in cost. Further, it is conceivable that the lower end 16 of the electrical component box 14 is rounded to make it difficult for the suction air to peel off. However, since the thickness of the rounded portion is reduced, the electrical component box is reduced. There also arises a problem that the substantial storage capacity of 14 is reduced.

  The present invention is an air conditioner indoor unit having a centrifugal blower for sucking air and an electrical component box on the lower side of the bell mouth so that the sucked air is not separated at the lower end (side lower end) of the electrical component box. Another object of the present invention is to provide an indoor unit of an air conditioner provided with a suction air shielding member.

In order to solve the above problems, the present invention mainly adopts the following configuration.
A decorative panel having a suction grill serving as a suction port for indoor air, a filter attached to an upper surface of the suction grill, and a blow-out port for blowing out air provided around the suction grill, and an upper portion of the decorative panel. A casing, a bell mouth provided at a position corresponding to the suction grille on the inner lower surface of the casing, and a centrifugal blower provided on the inner upper surface of the casing for sucking air and discharging air through the bell mouth And an indoor heat exchanger provided around the centrifugal blower, and an indoor unit of an air conditioner, wherein an electrical component box for storing a control board is installed below the bell mouth The electric box has a structure in which the inner side surface protrudes from the edge of the air suction port of the centrifugal blower to the center side, and the suction air passing through the suction grill is Avoid exposure to the lower end of the inner side surface of the serial electrical component box is provided between the electrical component box and the shielding member is the air inlet grill for the suction air, said shielding member, inside of the electric component box The side surface portion is integrated with the side surface portion, and the side surface portion is extended until it is substantially in contact with the filter .

A decorative panel having a suction grill serving as a suction port for indoor air, a filter attached to an upper surface of the suction grill, and a blow-out port for blowing out air provided around the suction grill; and an upper portion of the decorative panel. A casing disposed, a bell mouth provided at a position corresponding to the suction grille on the inner lower surface of the casing, and an inner upper surface of the casing for sucking air and discharging air through the bell mouth An air conditioner indoor unit comprising a centrifugal blower and an indoor heat exchanger provided around the centrifugal blower, wherein an electrical component box for housing a control board on the lower side of the bell mouth The electrical component box is installed, and its inner side surface protrudes from the edge of the air suction port of the centrifugal blower to the center side, and sucks through the suction grille. As the gas does not hit the lower end of the inner side surface of the electrical component box is provided between the electrical component box shielding member and the inlet grill for the suction air, the shield member, the electrical component box A configuration in which the inner side surface of the electrical component box is extended with respect to the inner bottom surface of the lid provided on the bottom surface of the lid, and is installed vertically until it substantially contacts the filter.

A decorative panel having a suction grill serving as a suction port for indoor air, a filter attached to an upper surface of the suction grill, and a blow-out port for blowing out air provided around the suction grill; and an upper portion of the decorative panel. A casing disposed, a bell mouth provided at a position corresponding to the suction grille on the inner lower surface of the casing, and an inner upper surface of the casing for sucking air and discharging air through the bell mouth An air conditioner indoor unit comprising a centrifugal blower and an indoor heat exchanger provided around the centrifugal blower, wherein an electrical component box for housing a control board on the lower side of the bell mouth The electrical component box has a structure in which an inner side surface thereof protrudes toward a center side from an edge of an air suction port of the centrifugal blower, and the suction grill has a central portion The filter comprises a crosspiece for sucking in air and an outer peripheral frame provided on an outer peripheral portion of the crosspiece, and the filter is removably attached to the upper surface of the suction grille, and the suction air passing through the suction grille is supplied to the electric grille. A shield member for the suction air is provided between the suction grille and the electrical component box so that it does not hit the lower end of the inner side surface of the product box, and the shield member has a substantially upper half of the outer peripheral frame. The electric component box is configured to extend to a portion that is vertically opposed to the lower end of the inner side surface .

  According to the present invention, it is possible to prevent separation of sucked air at the lower end (inner end of the lower surface) of the inner side surface of the electrical component box, and to prevent an increase in noise due to the flow of the separated air. it can.

It is a figure of Example 1 which shows the arrangement configuration of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is the elements on larger scale of Example 1 in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is a figure of Example 2 which shows the arrangement configuration of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is the elements on larger scale of Example 2 in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is a figure of Example 3 which shows the arrangement configuration of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is the elements on larger scale of Example 3 in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is a figure of Example 4 which shows the arrangement configuration of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is a figure of Example 5 which shows the arrangement configuration of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is the elements on larger scale of Example 5 in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is a figure of Example 6 which shows the arrangement configuration of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention. It is the top view which looked at Example 2 and Example 3 in the indoor unit of the air conditioner concerning the embodiment of the present invention from the lower part. It is a figure which shows the arrangement configuration of each component in the indoor unit of the air conditioner regarding a prior art. It is the elements on larger scale of the indoor unit of the air conditioner regarding a prior art. It is the top view which looked at the indoor unit of the air conditioner regarding a prior art from the downward direction.

  EXAMPLES 1-6 which show the arrangement configuration of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention are demonstrated in detail below, referring FIGS. In the drawings, 1 is a decorative panel, 2 is a housing, 3 is a suction grille, 4 is a wind direction plate, 5 is an outlet, 6 is a motor, 7 is a centrifugal blower, 8 is an arrow indicating the flow of suction air, and 9 is a filter. 10 is a bell mouth, 11 is an arrow indicating the flow of blown air, 12 is an indoor heat exchanger, 13 is a drain pan, 14 is an electrical component box, and 16 is a lower inner end (lower end on the side) of the electrical component box. , 18 is a shielding member, 19 is an arrow indicating the air flow sucked into the centrifugal blower near the electrical component box, 21 is a shielding member, 23 is a shielding member, 24 is a lid of the electrical component box, 25 is a shielding member, and 26 is shielded Reference numeral 30 denotes a suction port of the centrifugal blower, 33 denotes a crosspiece of the suction grille, and 34 denotes an outer peripheral frame of the suction grille.

  Example 1 which shows arrangement | positioning structure of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention using FIG. 1 and FIG. 2 is demonstrated. The first embodiment includes a decorative panel 1 and a casing 2 connected to the decorative panel 1 as a basic structure. Here, the decorative panel 1 is provided with a suction grill 3 at the center thereof, and a blowout port 5 provided with a wind direction plate 4 is disposed around the suction grill 3. As shown in FIGS. 1 and 2, the suction grill 3 includes a cross 33 (hatched portion indicated by a vertical line) of the grill 3 that sucks air and an outer peripheral frame 34 of the suction grill 3.

  A centrifugal blower 7 connected to the shaft of the motor 6 is installed at the center of the housing 2, and an indoor heat exchanger 12 is disposed around the centrifugal blower 7. A bell mouth 10 is attached below the centrifugal blower 7, and an electric component box 14 containing a control board (not shown) for controlling the operation of the indoor unit is provided on the lower surface or the lower side of the bell mouth 10. It is installed so as to block a part of the suction port 40 of the centrifugal blower 7. In order to secure the internal volume of the electrical component box 14, the side of the electrical component box 14 along the vertical direction of the air flow from the cross 33 of the suction grill 3 to the suction port 30 of the centrifugal blower 7 It protrudes to the center side of the edge of the suction port 30 of the centrifugal blower 7. The horizontal and vertical dimensions of the electrical component box 14 in the horizontal plane are the lengths of the horizontal dimension protruding from the edge of the suction port 30 toward the center as described above. The length substantially corresponds to one side (see FIG. 14).

  Further, the suction grill 3 is provided with a shielding member 18 that blocks the air flow so that the flow of the suction air 8 does not hit the lower surface and the lower surface end (lower end of the inner side surface) 16 of the electrical component box 14. . The shielding member 18 is extended to the outer peripheral frame 34 of the suction grill 3 and corresponds to the horizontal length of the electrical component box 14 (left and right length in the paper direction of FIG. 2) as shown in detail in FIG. This extends from the outer peripheral frame 34. In addition, the shielding member 18 is provided by the length corresponding to the vertical length of the electrical component box 14 (depth length in the direction perpendicular to the paper surface of FIG. 2). As shown in FIG. 2, the shielding member 18 is formed on the inner side surface of the electrical component box 14 with the substantially upper half of the outer peripheral frame 34 of the conventional general-purpose suction grill 3 shown in FIG. 13 facing the center of the suction port. It is extended to the position which opposes in the perpendicular direction. Of course, when the suction grill 3 is looked up from below, the crosspiece 33 has a substantially lower half when the suction air flow does not hit the lower surface end 16 of the electrical component box 14 due to the extended structure of the upper half. Since it remains, it gives a sense of security that the shape of the cross in the suction grill 3 is the same as that of the general-purpose product (see FIG. 14).

  As shown in FIG. 2, the air flow from the surface of the shielding member 18 that is vertically opposed to the lower surface of the electrical component box 14 is caused by the shielding member 18 that extends integrally with the outer peripheral frame 34 of the suction grill 3 by resin molding. Since it is closed, air is not sucked from the vertically opposed surfaces, and the air sucked from the suction grill 3 is the bottom inner end of the electrical component box 14 (that is, the inner side surface of the electrical component box 14 as indicated by an arrow 19). The lower end portion 16) reaches the suction port 30 of the centrifugal blower 7 without causing separation, and does not cause noise due to separation of the intake air. In the first embodiment, the shielding member 18 may be formed integrally with the outer peripheral frame 33 of the suction grill 3 with resin, and the number of parts can be reduced. Moreover, when the indoor unit is viewed from below, the crosspiece 33 of the suction grill 3 is symmetrical in the vertical and horizontal directions in the suction grill 3 as shown in FIG. 14, and does not impair the beauty and gives a sense of security. .

  In Example 1 of the indoor unit of the air conditioner according to the present embodiment, when the centrifugal fan 7 is rotated, air is supplied to the centrifugal fan 7 via the suction grill 3, the filter 9, and the bell mouth 10 as indicated by an arrow 8. The air sucked in and blown out from the centrifugal blower 7 is heat-exchanged by the heat exchanger 12 as indicated by an arrow 11 and then blown out from the blow-out port 5 toward the room. The filter 9 is placed with the end of the filter 9 locked by a locking portion (for example, a locking claw) provided on the suction grill 3, and the filter 9 can be detached from the suction grill 3. It is.

  Next, Example 2 which shows the arrangement structure of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention is demonstrated using FIG. 3 and FIG. The second embodiment differs from the first embodiment shown in FIGS. 1 and 2 in the structure of the shielding member 23 disposed below the electrical component box 14. As can be seen from the structure shown in FIG. 4, all of the suction grills 3 arranged perpendicularly to the lower surface of the electrical component box 14 are constituted by a shielding member 23. As is clear from the comparison with FIG. 2, in the second embodiment shown in FIG. 4, the suction grill 3 disposed perpendicularly to the lower surface of the electrical component box 14 is not provided with the crosspiece 33, and the shielding member 23 is provided. FIG. 11 is a plan view of the indoor unit viewed from below, but the crosspiece 33 of the suction grill 3 is not vertically symmetrical as shown in FIG. 11, and the lower shielding member 23 is a crosspiece 33 in the illustrated example. Have bite into. In the structure shown in FIGS. 3 and 4, the flow of the sucked air is the same as that of the first embodiment, and no separation of the air flow occurs at the lower end 16 of the electrical component box 14. The filter 9 has the same length as that of the first embodiment, and a general-purpose product that matches the dimensional specification of the suction grill 3 can be used.

  Next, Example 3 which shows the arrangement structure of each component in the indoor unit of the air conditioner which concerns on embodiment of this invention is demonstrated using FIG. 5 and FIG. The third embodiment is different from the second embodiment shown in FIGS. 3 and 4 in the dimensional structure of the filter 9 attached to the upper surface of the suction grill 3. The function of the filter 9 is to filter the air passing through the filter. However, the length of the filter shown in FIG. 4 representing the second embodiment is the same as the filter length in other indoor units of the same size specification, and is versatile. However, the filter 9 disposed on the upper surface of the shielding member 23 in FIG. 4 is not particularly required because the air flow is blocked by the shielding member 23. In the third embodiment, the length of the filter 9 is shortened in comparison with the second embodiment, and the length up to a position perpendicular to the lower end of the side surface of the electrical component box 14 is stopped. When the indoor unit of the third embodiment is viewed from below, as shown in FIG. 11, the crosspiece 33 of the suction grill 3 is vertically asymmetric.

  Next, Example 4 which shows the arrangement configuration of each component in the indoor unit of the air conditioner according to the embodiment of the present invention will be described with reference to FIG. 12 and 13 showing the prior art is that the shielding member 21 that blocks the suction air flow on the lower surface of the electrical component box 14 is integrated with the filter 20 on the suction grill 3. It is a point attached. In this Example 4, the air sucked into the centrifugal blower 7 does not cause separation of the air flow at the lower surface end 16 of the electrical component box 14 as indicated by an arrow 19, and prevents an increase in noise of the separation vortex accompanying the separation. Can do.

  Further, as shown in FIGS. 1 and 2 representing the first embodiment, when the shielding member 21 is provided inside the suction grill 3, the shielding member 21 can be seen through the crosspiece 33 of the suction grill 3. In contrast to this, in the fourth embodiment, the shielding member 21 is attached to the upper portion of the suction grille 3 and is integrated with the filter 20 and has the same color or the same color system as the filter 20. There is an advantage in that it is not conspicuous from the outside (viewed from below the indoor unit). Specifically, the shielding member 21 may be integrally formed with the filter 20 made of black or gray plastic. In this case, the cost for attaching the shielding member 21 can be reduced.

  Next, Example 5 in the indoor unit of the air conditioner according to the embodiment of the present invention will be described with reference to FIGS. 8 and 9. The fifth embodiment is different from the first, second, and third embodiments in that a shielding member 25 is integrally formed with the electrical component box 14 on the inner side surface of the electrical component box 14 on the suction port 30 side of the centrifugal blower 7. It is. As shown in FIGS. 8 and 9, the shielding member 25 integrated with the electrical component box 14 is arranged along the vertical direction 19 of the air flow from the cross 33 of the suction grill 3 to the suction port 30 of the centrifugal blower 7. 14 side surfaces are extended in the vertical direction and suspended until they contact the filter 9. Further, instead of extending the side surface of the electrical component box 14, the shielding member 25 may be integrally attached to the side surface of the electrical component box 14.

  In the fifth embodiment, since the flow path of the air flowing from the lower part perpendicular to the lower surface of the electrical component box 14 to the centrifugal blower side is closed by the shielding member 25, the air sucked into the centrifugal blower 7 is electrically No peeling occurs at the lower end of the product box 23, and an increase in noise due to the peeling vortex can be prevented.

  Furthermore, in the above-described first to fourth embodiments, the attachment length of the outer peripheral frame 34 of the filter 9 or the suction grill 3 is set such that the lower surface perpendicular to the lower surface of the electrical component box 14 is blocked by the shielding members 18, 21, 23. In contrast to this, since the shielding member 25 is installed on the side surface of the electrical component box 14 in the fifth embodiment, the suction grill 3 and the filter 9 care about their lengths. There is an advantage in that it can be installed without any problems. As described above, the shielding member 25 may be attached separately. However, even when the electrical component box 14 is made of sheet metal, the electrical component box 14 and the shielding member 25 are extended by extending the side end surface of the electrical component box 23 as shown in FIG. Can be configured integrally, and the manufacturing cost can be reduced.

  Next, Example 6 in the indoor unit of the air conditioner according to the embodiment of the present invention will be described with reference to FIG. The difference between the sixth embodiment and the fifth embodiment is that the shielding member 26 having a shape as shown in FIG. 10 is attached to the bottom cover 24 of the electrical component box 14 disposed on the suction port 30 side of the centrifugal blower 7. It is. That is, the shielding member 26 is attached to the bottom cover 24 so that the right side surface of the shielding member 26 is substantially flush along the side surface direction of the inner side surface of the electrical component box 14, and the length of the shielding member 26 in the vertical direction is further increased. Is substantially equal to the distance between the filter 9 on the bar 33 of the suction grill 3 and the bottom cover 24.

  In the sixth embodiment, similarly to the fifth embodiment described above, the flow path of the air flowing from the bottom of the bottom of the electrical box 14 to the centrifugal blower 7 side can be blocked by the shielding member 26, so that the centrifugal blower 7 is sucked. As shown by the arrow 19, the generated air does not cause air separation at the lower end portion of the electrical component box 27, thereby preventing an increase in noise. Here, in an indoor unit of a ceiling-embedded air conditioner, the height and size of the product may differ depending on the capacity even if the model is the same series. At this time, since the distance between the filter 9 and the electrical component box 14 is also different, if the electrical component box 14 and the shielding member 26 are integrated, a plurality of types of electrical component boxes corresponding to the above distances are prepared. There is a need.

  On the other hand, in the sixth embodiment, since the shielding member 26 is attached later, the attachment cost is high, but even when the distance between the electrical component box 14 and the filter 9 is different, it is possible to flexibly cope with it. Further, the shielding member 26 may be made using a sponge-like elastic material such as a resin that is flexible and deformable, or rubber, according to the case where the distance between the filter 9 and the electrical component box 14 is the largest. Even if the shielding member 26 of the same size is used for a model in which the distance between the filter 9 and the electrical component box 14 is short, the flexible and deformable shielding member 26 is deformed to deform the electrical component box 14, the filter 9, and the suction grill 3. Therefore, it is not necessary to change the dimension of the shielding member 26 even in different models. At this time, when the lower end of the flexible and deformable shielding member 26 comes into contact with the filter 9, the shielding member 26 does not refract in the middle of the vertical direction, but functions to shrink and deform in the vertical direction. (The length in the vertical direction can be adjusted by reducing deformation).

  In addition, since embodiment of this invention is an example of arrangement | positioning structure regarding the suction side of the centrifugal blower 7, it is applicable irrespective of the number, shape, etc. of the blower outlet provided in the decorative panel 1. FIG.

DESCRIPTION OF SYMBOLS 1 Decorative panel 2 Housing | casing 3 Suction grill 4 Wind direction board 5 Outlet 6 Motor 7 Centrifugal blower 8 Arrow which shows the flow of suction air 9 Filter 10 Bell mouth 11 Arrow which shows the flow of blowing air 12 Indoor heat exchanger 13 Drain pan 14 Electricity Product box 15 Arrow indicating separation of air flow generated at lower end of electric product box 16 Lower surface end of electric product box 18 Shield member 19 Arrow indicating air flow sucked into centrifugal blower near electric product box 21 Shield member 23 Shield member 24 Lid of electric box 25 Shield member 26 Shield member 30 Centrifugal blower suction port 33 Suction grill crosspiece 34 Suction grill outer peripheral frame

Claims (4)

A decorative panel having a suction grill serving as a suction port for indoor air, a filter attached to an upper surface of the suction grill, and a blow-out port for blowing out air provided around the suction grill, and an upper portion of the decorative panel. A casing, a bell mouth provided at a position corresponding to the suction grille on the inner lower surface of the casing, and a centrifugal blower provided on the inner upper surface of the casing for sucking air and discharging air through the bell mouth And an indoor heat exchanger provided around the centrifugal blower, and an air conditioner indoor unit comprising:
An electrical component box for storing the control board is installed on the lower side of the bell mouth,
The electrical component box has a structure in which the inner side surface protrudes from the edge of the air suction port of the centrifugal blower to the center side,
A shielding member for the suction air is provided between the suction grill and the electrical component box so that the suction air passing through the suction grill does not hit the lower end of the inner side surface of the electrical component box,
The indoor unit of an air conditioner , wherein the shielding member has an integral structure with a side surface portion on an inner side surface of the electrical component box, and extends the side surface portion until it is substantially in contact with the filter . A decorative panel having a suction grill serving as a suction port for indoor air, a filter attached to an upper surface of the suction grill, and a blow-out port for blowing out air provided around the suction grill, and an upper portion of the decorative panel. A casing, a bell mouth provided at a position corresponding to the suction grille on the inner lower surface of the casing, and a centrifugal blower provided on the inner upper surface of the casing for sucking air and discharging air through the bell mouth And an indoor heat exchanger provided around the centrifugal blower, and an air conditioner indoor unit comprising:
An electrical component box for storing the control board is installed on the lower side of the bell mouth,
The electrical component box has a structure in which the inner side surface protrudes from the edge of the air suction port of the centrifugal blower to the center side,
A shielding member for the suction air is provided between the suction grill and the electrical component box so that the suction air passing through the suction grill does not hit the lower end of the inner side surface of the electrical component box,
The shielding member is installed vertically with respect to the inner bottom surface of the lid provided on the bottom surface of the electrical component box in a shape extending the inner side surface of the electrical component box until it substantially contacts the filter. An air conditioner indoor unit. In claim 2 ,
The indoor unit of an air conditioner , wherein the shielding member is made of an elastic material that can be expanded and contracted in a vertical direction . A decorative panel having a suction grill serving as a suction port for indoor air, a filter attached to an upper surface of the suction grill, and a blow-out port for blowing out air provided around the suction grill, and an upper portion of the decorative panel. A casing, a bell mouth provided at a position corresponding to the suction grille on the inner lower surface of the casing, and a centrifugal blower provided on the inner upper surface of the casing for sucking air and discharging air through the bell mouth And an indoor heat exchanger provided around the centrifugal blower, and an air conditioner indoor unit comprising:
An electrical component box for storing the control board is installed on the lower side of the bell mouth,
The electrical component box has a structure in which the inner side surface protrudes from the edge of the air suction port of the centrifugal blower to the center side,
The suction grille is composed of a crosspiece that sucks air provided in the central part thereof and an outer peripheral frame provided in the outer peripheral part of the crosspiece,
The filter is detachably attached to the upper surface of the suction grille,
A shielding member for the suction air is provided between the suction grill and the electrical component box so that the suction air passing through the suction grill does not hit the lower end of the inner side surface of the electrical component box,
The indoor unit of an air conditioner , wherein the shielding member is a member in which a substantially upper half of the outer peripheral frame extends to a portion that is vertically opposed to a lower end of the inner side surface of the electrical component box. .

Images