JP6323143B2 - Indoor unit top plate - Google Patents

Description

  The present invention is used for an indoor unit of an air conditioner, and relates to an indoor unit top plate provided in a housing of an indoor unit in which a heat exchanger is accommodated.

  Conventionally, an indoor unit of an air conditioner includes a blower for supplying and exhausting indoor air, a heat exchanger for exchanging heat between the indoor air and a refrigerant, and a housing that covers the blower and the heat exchanger. . For example, an indoor unit of an air conditioner disclosed in Patent Document 1 heats indoor air sucked from a suction port and then sends the air from a blower outlet to thereby change the temperature of the room where the air conditioner is installed. To adjust.

  The indoor unit of an air conditioner disclosed in Patent Document 1 has a heat exchanger installed so as to surround the blower, and passes indoor air from the upstream side to the downstream side of the heat exchanger inside the housing A wind path is formed. In the indoor unit of an air conditioner disclosed in Patent Document 1, a concave groove extending to a condensed water inflow hole formed in a pipe housing portion inside the casing has a downstream of the heat exchanger on the top surface of the casing. It is a part corresponding to the side air passage, and is provided along the heat exchanger.

Japanese Patent Laid-Open No. 2007-17064

  The indoor unit of an air conditioner disclosed in Patent Document 1 is provided with devices such as a motor and a fan in a blower or the like inside the housing, and by operating these devices on the top surface of the housing. The top plate will vibrate. At this time, the indoor unit of the air conditioner disclosed in Patent Literature 1 may be transmitted to the living space as noise due to the surrounding air being vibrated by the vibration of the top plate.

  The indoor unit of the air conditioner disclosed in Patent Document 1 is a portion corresponding to the downstream air passage of the heat exchanger on the top surface of the housing, and a concave groove is provided on the top plate along the heat exchanger. The concave groove is formed so as to surround the heat exchanger without extending to the outer periphery of the housing. For this reason, the indoor unit of the air conditioner disclosed in Patent Document 1 is formed with a concave groove so as to surround the periphery of the heat exchanger, so that the rigidity at the portion where the concave groove is formed is high. Since it becomes small and is easily bent and deformed from the outer peripheral side to the center side of the housing, the top plate may have insufficient rigidity.

  Moreover, the indoor unit of the air conditioner disclosed in Patent Document 1 is formed so that the concave groove does not extend to the outer periphery of the casing, and the concave groove and the outer periphery of the casing are separated from each other. Therefore, when the top plate vibrates due to the operation of the device, the entire surface of the top plate and the concave groove vibrate integrally inside the outer periphery of the housing. For this reason, the indoor unit of the air conditioner disclosed in Patent Document 1 has a large surface area on the top surface of the housing, and therefore the entire surface of the top plate and the concave groove vibrate together. As a result, the vibration and noise of the entire indoor unit become excessive, and there is a problem that the quiet performance of the indoor unit of the air conditioner may be significantly reduced.

  Therefore, the present invention has been devised in view of the above-described problems, and its object is to improve the frequency by narrowing the range (vibration region) in which the ceiling plate for indoor units vibrates. Thus, an object of the present invention is to provide an indoor unit top plate capable of remarkably improving the quiet performance of an indoor unit of an air conditioner.

The top plate for an indoor unit according to the first invention includes a blower for sucking and sending indoor air, a heat exchanger arranged to surround the blower and circulating a refrigerant, a blower and a heat exchanger And an air conditioner in which the indoor air sucked from the air intake port is heat-exchanged with the refrigerant by the heat exchanger and is supplied from the air supply port. An indoor unit top plate provided in a casing of an indoor unit of an air conditioner in the indoor unit of the unit, the top plate inner side portion provided on the upstream side of the air path of a heat exchanger that sucks indoor air; A top plate outer side provided on the downstream side of the air path of the heat exchanger for sending air into the room, the top plate outer side being a main support side formed along the outer periphery of the housing, and an upper or lower side Ribs formed so as to protrude toward the edge, and both end portions of the ribs extend to the main support side. Is, the top plate outer portion, as narrowing the inner vibration area of the ribs serving as the center side of the housing, at the corners formed by two of said primary support adjacent sides, both end portions of the ribs but wherein the Rukoto provided extending up to two of said primary support-edge to form the corners.

For indoor ceiling plate according to the second invention, Oite the first shot bright, the top plate inner portion, by the embossed portion for arranging the heat exchanger is provided, with the top plate outer portion boundary is formed, the top plate outer portion, by contacting the re blanking on the embossed portion, or, by separating the said re blanking from the embossed portion, the boundary between the top plate inner portion the without straddling the re blanking, outside the embossed portions serving as the outer peripheral side of the housing, wherein the re blanking is provided.

A top panel for an indoor unit according to a third aspect of the present invention is the first or second aspect of the present invention , wherein the outer side of the top panel is a corner formed by two adjacent main support sides and is formed by cutting off the corner. An auxiliary support side is provided.

Indoor machine top plate according to the fourth invention, in any one of the first to third aspects of the invention, the depth d which projects towards the re blanking upward or downward is defined by the following equation (1) It is characterized by satisfying the relationship. Here, d: the Li Bed depth, t: the thickness of the indoor unit top plate.

According to the first invention to fourth invention, both end portions of the ribs in the top plate outer portion is provided to extend to the main supporting-edge, that the narrow oscillating region inside the re blanking is formed, the ceiling for indoor unit The vibration frequency of the indoor unit top plate can be improved by virtue of the vibration property in which the span in which the plate vibrates is shortened. Further, maintained according to the first invention to fourth invention, Li blanking is installed in order to increase the rigidity of the top plate, the middle portion of the both end portions of the ribs, due to restrictions other than structural performance, a constraint condition of the Li Bed Therefore, since the continuity necessary for this is ensured, the rigidity of the top panel for indoor units can be increased and the frequency of the top panel for indoor units can be improved. Thereby, according to 1st invention- 4th invention, the quietness performance of the indoor unit of an air conditioner is remarkably improved by improving the frequency of the top plate for indoor units and reducing vibration noise etc. It becomes possible to improve.

In particular, according to the fourth invention, for example, when the relative value α of the frequencies is about 1.10, even by reducing the thickness t of the steel plate or the like from 0.8mm to about 0.7 mm, Li Bed Since it is possible to obtain a frequency equivalent to the frequency when no is provided, it is possible to save about 13% of the material and reduce the material cost. According to the fourth invention, without increasing the thickness t of the steel plate or the like, since it is possible to obtain a larger frequency frequency when re blanking is not provided, the materials used in the steel plate or the like Without increasing, it is possible to improve vibration frequency of the indoor unit top plate and reduce vibration noise and the like.

It is a perspective view which shows the indoor unit in which the top plate for indoor units to which this invention is applied is provided. It is side sectional drawing which shows the indoor unit in which the top plate for indoor units to which this invention is applied is provided. It is a perspective view which shows the top plate for indoor units to which this invention is applied. (A) is a top view which shows the top plate for indoor units to which this invention is applied, (b) is a top view which shows the corner part in which the auxiliary | assistant support side was provided. (A) is a top view which shows the some rib which varied the extension of the top plate for indoor units to which this invention is applied, (b) is a top view which shows the curved rib. (A) is an enlarged plan view which shows the rib made to contact the embossed part of the top plate for indoor units to which this invention is applied, (b) is the AA line end elevation. (A) is an enlarged plan view which shows the rib spaced apart from the embossed part of the top plate for indoor units to which this invention is applied, (b) is the BB line end view. (A) is an enlarged plan view which shows the stiffening surface part formed in the substantially planar shape of the top plate for indoor units to which this invention is applied, (b) is the CC line end view. (A) is a top view which shows the vibration area | region inside the rib of the top plate for indoor units to which this invention is applied, (b) is a top view which shows the vibration area | region of the conventional top plate. (A) is a top view which shows the external force which acts on the top plate for indoor units to which this invention is applied, (b) is a top view which shows the external force which acts on the conventional top plate. (A) is a top view which shows the vibration area | region inside the stiffening surface part of the top plate for indoor units to which this invention is applied, (b) is a top view which shows the external force which acts on this. The graph which shows the relationship between the relative value of the frequency by providing a rib or a stiffening surface part in the top plate for indoor units to which this invention is applied, and the ratio of the depth of a rib or a stiffening surface part, and the plate | board thickness of a steel plate. is there.

  Hereinafter, the form for implementing the top plate 1 for indoor units to which this invention is applied is demonstrated in detail, referring drawings.

  As shown in FIG. 1, an indoor unit top plate 1 to which the present invention is applied is used for an indoor unit 5 of an air conditioner that is fitted into a ceiling interior 7 or the like in order to adjust indoor temperature or humidity. is there.

  As shown in FIG. 2, the indoor unit 5 of the air conditioner includes a blower 51 such as a fan for sucking and sending indoor air, a heat exchanger 52 for circulating a refrigerant, and the blower 51 and heat exchange. The container 52 and the like are provided with a housing 53 accommodated in the housing interior 50. The heat exchanger 52 is spaced from the side plate 56 of the housing 53 in the lateral direction X at a predetermined interval and is disposed so as to surround a part or all of the periphery of the blower 51.

  The indoor unit 5 of the air conditioner sucks indoor air from the air intake port 54, passes the intake air through the heat exchanger 52 to exchange heat, and then heat-exchanged air from the air supply port 55. Air is sent indoors. In the indoor unit 5 of the air conditioner, the air passage 6 through which air passes from the air inlet 54 to the air inlet 55 is formed in the inside 50 of the housing, and the center side of the housing 53 with the heat exchanger 52 as a boundary is located on the wind side. In addition to the upstream side 6a, the outer peripheral side of the casing 53 with the heat exchanger 52 as a boundary is the downstream side 6b.

  In the indoor unit top plate 1 to which the present invention is applied, a steel plate or the like is attached to an upper portion or the like of a housing 53 in which the heat exchanger 52 or the like is accommodated, and the top surface or the like of the housing 53 is closed with a steel plate or the like. A closed space is formed in the inside 50 of the housing. The top plate 1 for indoor units to which the present invention is applied includes a top plate inner side portion 2 provided on the air path upstream side 6 a from which the indoor air is sucked at the center side of the housing 53, and an indoor portion on the outer peripheral side of the housing 53. And a top plate outer side portion 3 provided on the air path downstream side 6b through which air is supplied.

  The indoor unit top plate 1 to which the present invention is applied is directed upward by bending a steel plate or the like at the boundary between the top plate inner portion 2 and the top plate outer portion 3 along the position where the heat exchanger 52 is provided. Thus, an embossed portion 20 is formed. In the indoor unit top plate 1 to which the present invention is applied, a heat exchanger 52 is fitted into the embossed portion 20 inside the housing 50, and a gap is formed between the upper end of the heat exchanger 52 and the top surface of the housing 53. As not to be generated, heat-exchanged air is not allowed to flow backward from the air path downstream side 6b to the air path upstream side 6a.

  The top plate inner portion 2 is provided with an embossed portion 20 for disposing the heat exchanger 52 so as to protrude upward, thereby forming a boundary with the top plate outer portion 3. As shown in FIG. 3, the top plate inner portion 2 is a region inside the embossed portion 20 that is the central side of the housing 53, and a steel plate or the like is formed in a substantially flat plate shape. The top plate inner portion 2 is not limited to this, and a concave portion or a convex portion may be formed by partially protruding a steel plate or the like in the vertical direction Y in a region that is the inner side of the embossed portion 20.

  The top plate outer portion 3 includes a plurality of main support sides 31 formed along a casing outer periphery 53a in which a plurality of side plates 56 are combined, and a rib 30 formed by bending a steel plate or the like to protrude in the longitudinal direction Y. Is provided. The top plate outer side portion 3 may be protruded downward to form the rib 30, or may be protruded upward to form the rib 30. At this time, the top plate outer side portion 3 is provided with a plurality of ribs 30, and both end portions 30 a of each rib 30 are extended to the main support side 31.

  When the casing outer periphery 53a is formed in a substantially rectangular shape, the top plate outer side portion 3 is formed in a substantially rectangular shape with four main support sides 31 as shown in FIG. . At this time, the top plate outer side portion 3 is a corner portion 33 formed by two adjacent main support sides 31, and an intersection portion 33 a of the adjacent main support sides 31 is an outer peripheral side of the rib 30. Both ends 30a of the rib 30 are provided so as to extend to the two adjacent main support sides 31 so as to be disposed on the outside.

  The top plate outer side portion 3 is formed by two adjacent main support sides 31 as shown in FIG. 4B by making the intersection 33a of the adjacent main support sides 31 into corners. An auxiliary support side 32 formed by cutting a corner may be provided at the corner 33. At this time, the top plate outer side portion 3 is provided so that both end portions 30a of the rib 30 extend to the two adjacent main support sides 31 so that the auxiliary support side 32 is disposed outside the rib 30. The auxiliary support side 32 is formed in a substantially straight line at each corner 33, but is not limited thereto, and may be formed in a substantially polygonal shape by connecting a plurality of straight lines. May be formed.

  As shown in FIG. 4, the top plate outer portion 3 has four corners 33 formed by the four main support sides 31, and the four ribs 30 are substantially straight and extend substantially straight to the main support side 31. It is provided extending in a shape. The top plate outer side portion 3 is not limited to this, and the ribs 30 may be provided only in some of the four corner portions 33, as shown in FIG. The ribs 30 may have different lateral X extensions. Furthermore, as shown in FIG.5 (b), the top-plate outer side part 3 may curve at least one part among the some ribs 30. FIG.

  As shown in FIG. 6, the top plate outer side portion 3 is continuously formed from the embossed portion 20 that protrudes upward, and a rib 30 that protrudes downward is formed so that the rib 30 contacts the embossed portion 20. It will be a thing. The top plate outer portion 3 is not limited to this, and the rib 30 may be separated from the embossed portion 20 as shown in FIG. At this time, the outer side 3 of the top plate does not extend over the rib 30 at the boundary with the inner side 2 of the top plate, and the steel plate or the like is placed in the vertical direction Y on the outer side of the embossed part 20 on the outer peripheral side of the housing 53. The rib 30 is provided by being bent. As shown in FIGS. 6 and 7, the top plate outer portion 3 is formed with a substantially straight rib 30 at the corner 33 so as to protrude in the vertical direction Y so as to have a predetermined width w in the horizontal direction X. The

  As shown in FIG. 8, the top plate outer side portion 3 is bent in a plurality of main support sides 31 formed along the outer periphery 53a of the casing and a steel plate or the like so as to protrude upward or downward in a substantially planar shape. You may be provided with the stiffening surface part 35 formed. At this time, the top plate outer portion 3 is formed with stiffening surface portions 35 so as to include the intersecting portions 33a at the respective corner portions 33 formed by the two adjacent main support sides 31, and each of the supplementary surface portions 35 is provided. The two side edges 35 a of the rigid surface portion 35 are provided to extend to the main support edge 31. The stiffening surface portion 35 is provided in contact with the embossed portion 20, but is not limited thereto, and may be provided apart from the embossed portion 20.

  The rib 30 or the stiffening surface portion 35 has a depth in which the rib 30 or the stiffening surface portion 35 protrudes upward or downward as shown in FIGS. 6B, 7B, and 8B. d satisfies the relationship defined by the following equation (1) in relation to the thickness t of the steel plate or the like of the indoor unit top plate 1 to which the present invention is applied. Here, d is the depth (mm) of the rib 30 or the stiffening surface portion 35, and t is the thickness (mm) of the indoor unit top plate 1.

  The rib 30 or the stiffening surface portion 35 satisfies a relationship in which the ratio between the depth d of the rib 30 or the stiffening surface portion 35 and the plate thickness t of the indoor unit top plate 1 is defined by the above equation (1). Furthermore, it is desirable that the depth d of the rib 30 or the stiffening surface portion 35 be about 8 times the thickness t of the indoor unit top plate 1. At this time, the rib 30 or the stiffening surface portion 35 is, for example, the depth of the rib 30 or the stiffening surface portion 35 when the thickness t of the steel plate or the like of the indoor unit top plate 1 to which the present invention is applied is 0.8 mm. It is desirable that d is 3 mm or more and 8 mm or less, and the depth d of the rib 30 or the stiffening surface portion 35 is about 6.4 mm.

  In the indoor unit top plate 1 to which the present invention is applied, as shown in FIG. 2, when the air conditioner is operated, devices such as a motor and a fan provided in the blower 51 and the like inside the housing 50 are operated. Etc., the top 53 of the housing 53 vibrates. The vibration on the top surface of the casing 53 mainly causes vibration noise due to a small frequency such as a primary natural frequency that increases or decreases with the rigidity of the steel plate of the indoor unit top plate 1.

  As shown in FIG. 9A, the top plate outer side portion 3 is provided with both end portions 30 a of the rib 30 extending to the main support side 31 when the rib 30 is formed. Further, as shown in FIG. 11A, the top plate outer side portion 3 is provided with the two side sides 35 a of the stiffening surface portion 35 extending to the main support side 31 when the stiffening surface portion 35 is formed. The top plate outer side portion 3 has ribs 30 or stiffening on the outer peripheral side of the casing 53 with both end portions 30a of the rib 30 or the two side sides 35a of the stiffening surface portion 35 being constrained by the main support side 31 at the corner 33. Outside the surface portion 35, the vibration of the indoor unit top plate 1 is remarkably reduced. At this time, the top plate outer side portion 3 is formed with a vibration region V <b> 1 when the indoor unit top plate 1 vibrates inside the rib 30 or the stiffening surface portion 35 which is the central side of the casing 53. .

  On the other hand, as shown in FIG. 9B, the conventional top plate 9 is formed without the concave groove 90 extending to the peripheral support side 91, and the concave groove 90 and the peripheral support are formed. The side 91 is spaced apart. At this time, in the conventional top plate 9, since the concave groove 90 is not restrained by the surrounding support side 91, the entire surface of the top plate 9 and the concave groove 90 vibrate together. The vibration region V <b> 2 is formed on the entire surface of the top plate 9 inside the surrounding support side 91.

  As shown in FIGS. 9A and 11A, the top plate outer portion 3 is vibrated over the entire surface of the top plate 9 because the vibration region V1 is formed inside the rib 30 or the stiffening surface portion 35. Compared with the region where the region V2 is formed, the vibration region V1 inside the rib 30 or the stiffening surface portion 35 is narrowed, and both end portions 30a of the rib 30 or the two side sides 35a of the stiffening surface portion 35 are adjacent to each other. The two main support sides 31 are provided so as to extend.

  At this time, the top plate 1 for indoor units to which the present invention is applied is provided with both end portions 30a of the ribs 30 or the two side sides 35a of the stiffening surface portion 35 extending to the main support side 31 at the top plate outer side 3. By forming the narrow vibration region V1 inside the rib 30 or the stiffening surface portion 35, the vibration frequency of the indoor unit top plate 1 is improved by the vibration property that shortens the span in which the indoor unit top plate 1 vibrates. be able to. Thereby, the ceiling plate 1 for indoor units to which this invention is applied shall improve the quiet performance of the indoor unit 5 of an air conditioner by improving vibration frequency and reducing vibration noise etc. Is possible.

  As shown in FIG. 10A, the indoor unit top plate 1 to which the present invention is applied has a plurality of ribs 30 formed at the corners 33 of the top plate outer portion 3 when the ribs 30 are formed. They are provided apart from each other. At this time, the top plate 1 for indoor units to which the present invention is applied does not allow the ribs 30 to be installed between the adjacent corners 33 of the top plate outer side portion 3. Both end portions 30a are constrained to the main support side 31 at each corner 33, and the continuity of the ribs 30 necessary to maintain the constrained state of each rib 30 is ensured.

  Moreover, the indoor unit top plate 1 to which the present invention is applied is formed at the corner 33 of the top plate outer portion 3 even when the stiffening surface portion 35 is formed as shown in FIG. A plurality of stiffening surface portions 35 are provided apart from each other. At this time, the top plate 1 for indoor units to which the present invention is applied does not allow the stiffening surface portion 35 to be installed between the adjacent corner portions 33 of the top plate outer side portion 3. The two side edges 35a of the rigid surface portion 35 are constrained by the main support sides 31 at the respective corner portions 33, and the continuity of the stiffening surface portion 35 necessary for maintaining the restrained state of the respective stiffening surface portions 35 is ensured. Will be.

  On the other hand, as shown in FIG. 10 (b), the conventional top plate 9 is formed without the concave groove 90 extending to the surrounding support side 91, and the concave groove 90 is supported around. It is provided continuously along the side 91. At this time, since the conventional top plate 9 has a concave groove 90 installed between adjacent corners, the rigidity at the portion where the concave groove 90 is formed is small. Thus, since the external force P tends to bend and deform from the outer peripheral side to the center side of the housing, the rigidity of the conventional top plate 9 may be insufficient.

  As shown in FIGS. 10 (a) and 11 (b), the indoor unit top plate 1 to which the present invention is applied is provided at both ends 30a of the ribs 30 or the middle part of the two side sides 35a of the stiffening surface part 35. The continuity necessary for maintaining the restraint state of the rib 30 or the stiffening surface portion 35 is ensured by constraints other than the structural performance. Therefore, the rigidity of the top plate 1 for indoor units is increased, and the frequency is reduced. Can be improved. Thereby, the top plate 1 for indoor units to which this invention is applied becomes a thing which improved the frequency and reduced vibration noise etc., and improves the quiet performance of the indoor unit 5 of an air conditioner remarkably. Is possible.

  Here, a small frequency such as the primary natural frequency can be improved by increasing the thickness t of the steel plate or the like, but if the thickness t of the steel plate or the like is increased, the entire air conditioner is increased. Since the weight and installation space increase and the amount of materials used increases, construction costs and material costs increase.

  The indoor unit top plate 1 to which the present invention is applied satisfies the relationship defined by the above formula (1), and the depth d of the rib 30 or the stiffening surface portion 35 is the thickness t of the indoor unit top plate 1. It is set to be 3.75 times or more. At this time, as shown in FIG. 12, the indoor unit top plate 1 to which the present invention is applied is provided with the rib 30 or the stiffening surface portion 35 at the frequency when the rib 30 or the stiffening surface portion 35 is not provided. In this case, the relative value α of the frequency when the frequency is removed exceeds about 1.09.

  Note that FIG. 12 is derived based on the following numerical analysis study. The analysis target is a substantially rectangular top plate for indoor unit 1 having a plate thickness t of 0.8 mm, a width of 600 mm in the plane direction, and a length of 1400 mm, and has ribs 30 extending to two adjacent main support sides 31. Is. The rib 30 has a width of 40 mm and a length of 350 mm in the planar direction, and the angle between two adjacent main support sides 31 is 45 degrees. In this numerical analysis, in the state where the horizontal and vertical displacements of the indoor unit top plate 1 are fixed at the position of the main support side 31, the depth d of the unevenness of the ribs 30 is determined based on the depth of the top plate 1 for the indoor unit. A plurality of types of finite element analysis models are created by changing the ratio to the plate thickness t in a range of about 0 to 20 times. The result of the vibration eigenvalue analysis using these finite element analysis models is the ratio of the primary natural frequency when the rib 30 having a predetermined depth d is provided to the case where the depth d of the rib 30 is zero ( The relative value α of the frequency is the vertical axis, and the ratio of the depth d of the unevenness when the rib 30 having the predetermined depth d is provided to the thickness t of the top plate 1 for indoor units (the rib 30 The depth is plotted as shown in FIG. 12, with the horizontal axis representing the depth / thickness of the top plate 1 for indoor units.

  In the indoor unit top plate 1 to which the present invention is applied, for example, when the relative value α of the frequency is about 1.10, the thickness t of the steel plate or the like is reduced from about 0.8 mm to about 0.7 mm. However, since it is possible to obtain a frequency equivalent to the frequency when the rib 30 or the stiffening surface portion 35 is not provided, it is possible to save about 13% of the material and reduce the material cost. Moreover, the top plate 1 for indoor units to which this invention is applied can obtain a frequency larger than a frequency when the rib 30 or the stiffening surface part 35 is not provided, without increasing the board thickness t, such as a steel plate. Therefore, it is possible to reduce vibration noise and the like by increasing the frequency of the steel plate without increasing the material used for the steel plate.

  The indoor unit top plate 1 to which the present invention is applied satisfies the relationship defined by the above formula (1), and the depth d of the rib 30 or the stiffening surface portion 35 is the thickness t of the indoor unit top plate 1. As shown in FIG. 2, it is assumed that the rib 30 or the stiffening surface portion 35 does not protrude greatly from the inside 50 of the housing, and the devices and the like in the inside 50 of the housing. Or it becomes possible to avoid that the stiffening surface part 35 interferes.

  The top plate 1 for indoor unit to which the present invention is applied is protruded into the housing interior 50 on the air path upstream side 6a where devices such as the blower 51 and the heat exchanger 52 are concentrated in the housing interior 50. The rib 30 or the stiffening surface portion 35 may not be formed on the top plate inner portion 2. At this time, the indoor unit top plate 1 to which the present invention is applied has the rib 30 or the stiffening surface portion 35 formed on the top plate outer portion 3 to improve the frequency of the steel plate, etc. And the rib 30 or the stiffening surface portion 35 can be prevented from interfering with each other.

  The top plate 1 for indoor units to which the present invention is applied has the embossed portion 20 at the boundary between the top plate outer portion 3 and the top plate inner portion 2 without the embossed portion 20 straddling the rib 30 or the stiffening surface portion 35. The rib 30 or the stiffening surface portion 35 is provided on the outer side of the first member. Thereby, the top plate 1 for indoor units to which the present invention is applied is, for example, the case where the rib 30 or the stiffening surface portion 35 is formed so as to protrude upward, and the heat exchanged air is the rib 30 or It is possible to prevent the air-conditioning efficiency from being lowered when adjusting the temperature and humidity in the room by preventing the flow from the air path downstream side 6b to the air path upstream side 6a through the stiffening surface portion 35. It becomes.

  In the indoor unit top plate 1 to which the present invention is applied, when the rib 30 or the stiffening surface portion 35 protrudes downward, the boundary between the top plate outer portion 3 and the top plate inner portion 2 is defined as the rib 30. Or the heat exchanger 52 can be arrange | positioned in the embossed part 20 over the full length by not being able to straddle the stiffening surface part 35. As shown in FIGS. 6 and 8, the top plate 1 for an indoor unit to which the present invention is applied has the rib 30 or the stiffening surface portion 35 in contact with the embossed portion 20, thereby heat exchange with the embossed portion 20. As shown in FIG. 9 and FIG. 11, the vibration region V1 when the indoor unit top plate 1 vibrates can be made as narrow as possible while the device 52 can be disposed over the entire length. Become.

  As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be construed as limiting.

  The top plate 1 for indoor units to which the present invention is applied is formed in a substantially rectangular or substantially square shape in accordance with the outer periphery 53a of the casing by forming the casing 53 in a substantially rectangular or substantially square shape. The top plate 1 for indoor units to which the present invention is applied is not limited to this. For example, when the casing 53 is formed in a substantially circular shape or a substantially elliptical shape, the top plate 1 is substantially circular or substantially elliptical according to the outer periphery 53a of the casing. The main support side 31 having a circular arc shape or the like is formed on the outer side 3 of the top plate.

1: Top plate for indoor unit 2: Top plate inner side portion 20: Embossed portion 3: Top plate outer side portion 30: Rib 30a: Both ends 31: Main support side 32: Auxiliary support side 33: Corner portion 33a: Intersection 35: Stiffening surface portion 35a: 2 sides 5: indoor unit 50: interior of casing 51: blower 52: heat exchanger 53: casing 53a: casing outer periphery 54: inlet port 55: air supply port 56: side plate 6: air passage 6a: Upstream side 6b: Downstream side 7: Inside ceiling X: Horizontal direction Y: Vertical direction

Claims (4)

A blower for inhaling and sending indoor air, a heat exchanger arranged so as to surround the blower and circulating the refrigerant, and a housing for accommodating the blower and the heat exchanger to form an air passage; The indoor unit of the air conditioner in the indoor unit of the air conditioner that exchanges heat between the indoor air sucked from the intake port and the refrigerant by the heat exchanger and supplies the air from the air supply port The indoor unit top plate provided in the housing of the
A top plate inner side portion provided on the upstream side of the air passage of the heat exchanger that sucks indoor air, and a top plate outer side portion provided on the downstream side of the air passage of the heat exchanger that sends air into the room,
The outer side of the top plate has a main support side formed along the outer periphery of the housing and a rib formed to protrude upward or downward, and both ends of the rib extend to the main support side. Provided ,
The outer side of the top plate is a corner formed by the two main support sides adjacent to each other so as to narrow the vibration area inside the rib that is the center side of the casing, and both ends of the rib are the top plate for the indoor unit, characterized in Rukoto provided extending up to two of said primary support-edge to form the corners. The top plate inner side is provided with an embossed portion for arranging a heat exchanger, thereby forming a boundary with the top plate outer side,
The top plate outer portion, by contacting the re blanking on the embossed portion, or, by separating the said re blanking from the embossed portion, cross the boundary between the top plate inner portion to the Li Bed without, outside the embossed portions serving as the outer peripheral side of the housing, the indoor machine top plate of claim 1 Symbol mounting, characterized in that said re blanking it is provided. The indoor unit according to claim 1 or 2, wherein the top plate outer side portion is provided with an auxiliary support side formed by cutting a corner at a corner portion formed by two adjacent main support sides. Top plate. The depth d which projects towards the re blanking upward or downward, the following (1) to any one of claims indoor unit of claim 1 to 3, characterized by satisfying the relationship defined by the equation Top plate.

Here, d: the Li Bed depth, t: the thickness of the indoor unit top plate.

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