Air intake grille

Abstract

To provide an air supply grille capable of suppressing temperature difference between an upper part and a lower part inside a room to improve amenity of a person in a room by setting supplied air current in a blowing direction while maintaining appearance of an installation space.SOLUTION: An air supply grille includes: a body part having an outdoor side opening for supplying air from the outdoor side and a fixation surface for being fixed to a ceiling surface; an indoor side opening for blowing the air supplied from the outdoor side opening almost in parallel to the fixation surface; a rectangular panel part installed vertically below the body part; and an installation part to which the panel part can be installed in four pattern arrangements per 90 degrees in a peripheral direction of the body part. The air supply grille has such a relationship that four directions as four blowout directions different from one another for each of the four pattern arrangements are settled within the range of 90 degrees by installing the body part and the panel part via the installation part.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to an air supply grill.

Background Art

[0002] A conventional air supply grill will be described using FIG. 14. Conventionally, there is known an air supply grill 206 that connects a duct drawn from a separate space to a duct connection port 202 and through which air-conditioned air 201 generated by an air conditioner installed in the separate space is conveyed (see, for example, Patent Document 1).

[0003] The air supply grill 206 blows out the air-conditioned air 201 blown through the duct as an air supply flow 205 along the ceiling surface 204 in the cross direction of the room, that is, in four directions, from four (two in the drawing) outlets 203 provided along the ceiling surface 204.

[0004] Such a conventional air supply grill 206 blows out the air-conditioned air 201 along the ceiling surface 204, so the air supply flow 205 of the air-conditioned air 201 does not directly hit the occupants in the room. Therefore, the occupants can be spared from cold and dryness caused by directly being exposed to the air flow, and thus it has the merit of suppressing the giving of discomfort factors to the occupants. Further, since this air supply grill 206 is formed in a rectangular shape, it can be installed so that the outer periphery of the air supply grill 206 is parallel to the wall surface of the installation space, and thus it also has the merit of not impairing the aesthetics of the installation space.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Incidentally, when there is a temperature difference between the inside and outside, for example in winter, while the inside of a room where conditioned air is supplied through the air supply grille forms a generally comfortable high-temperature region for occupants, some areas (for example, around windows) form a low-temperature region. This is because in areas with poor insulation, such as around windows, the heat balance between the inside and outside becomes large, and the outside temperature affects the inside temperature. Furthermore, it is known that air density is correlated with temperature, and the lower the temperature, the higher the density. In other words, the low-temperature air formed around windows flows downwards due to its high density and spreads throughout the lower part of the room. As a result, even though conditioned air is supplied to the room, the temperature in the lower part of the room becomes low, and the temperature difference between the top and bottom of the room becomes large. This has led to the problem of reduced comfort for occupants.

[0007] To solve this problem, it is effective to blow conditioned air towards windows with a large heat balance, thereby transporting the high-temperature conditioned air to the low-temperature region formed around the windows. This reduces the flow of low-temperature air downwards in the room, suppressing the occurrence of temperature differences between the upper and lower parts of the room.

[0008] On the other hand, the position of windows inside a room varies depending on the room layout. In other words, in order to blow conditioned air from the air intake grille towards the window, it is necessary to adjust the direction of the air intake grille's airflow depending on the installation environment, such as the placement of the windows.

[0009] However, with conventional rectangular air intake grilles, if the outer edge of the grille is installed parallel to the wall of the installation space for aesthetic reasons, the direction of airflow will also be parallel to the wall, and depending on the room layout, it may not be possible to direct airflow towards the area around the window.

[0010] Therefore, the present invention aims to solve the above-mentioned conventional problems and to provide an air supply grill that can improve the comfort of occupants while maintaining the aesthetic appearance of the installation space, even in various layout environments. [Means for solving the problem]

[0011] To achieve this objective, the air supply grille according to the present invention comprises a main body having an outdoor opening for supplying air from the outside and a fixing surface for fixing to the ceiling surface, an indoor opening for blowing out the air supplied from the outdoor opening substantially parallel to the fixing surface, a rectangular panel attached vertically below the main body, and a mounting section that allows the panel to be attached to the main body in four patterns of arrangements at 90-degree intervals in the circumferential direction, and the indoor opening, when attached to the main body and the panel via the mounting section, has four different blowing directions for each of the four arrangements, with all four directions falling within a 90-degree range. This achieves the intended objective. [Effects of the Invention]

[0012] The present invention aims to provide an air supply grill that can improve the comfort of occupants while maintaining the aesthetic appearance of the installation space, even in various layout environments. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a downward perspective view of an air supply grille according to an embodiment of the present invention. [Figure 2] Figure 2 is a cross-sectional perspective view of the air intake grille. [Figure 3] Figure 3 is a downward perspective view of the main body that constitutes the air intake grille. [Figure 4] Figure 4 is an upper perspective view of the panel section that makes up the air intake grille. [Figure 5] Figure 5 is a top view showing an example of the airflow direction of the air intake grille. [Figure 6] Figure 6 is a top view showing another example of the airflow direction of the air intake grille. [Figure 7] Figure 7 is a side view simulating the temperature distribution and airflow in an air-conditioned room. [Figure 8] Figure 8 shows top views of the air-conditioned room in various cases where the relative positional relationship between the window and the air supply grille is different. [Figure 9]FIG. 9 is a top view of the conditioned space in the symmetrical arrangement of FIG. 8. [Figure 10] FIG. 10 is a bottom perspective view of the main body portion in Modification 1 and a top perspective view of the panel portion. [Figure 11] FIG. 11 is a top view showing the blowing direction of the supply air flow of the supply air grille in Modification 1. [Figure 12] FIG. 12 is a bottom perspective view of the main body portion in Modification 2 and a top perspective view of the panel portion. [Figure 13] FIG. 13 is a top view showing the blowing direction of the supply air flow of the supply air grille in Modification 2. [Figure 14] FIG. 14 is a perspective view and a central cross-sectional view of Patent Document 1.

BEST MODE FOR CARRYING OUT THE INVENTION

[0014] Hereinafter, embodiments of the present invention will be described based on the drawings. However, the embodiments shown below illustrate the structure of the supply air grille for embodying the technical idea of the present invention, and the present invention is not limited to the following structure of the supply air grille. Further, in the following description, the same names and reference numerals indicate the same or similar members, and detailed descriptions will be omitted as appropriate. In addition, the content described in some examples and embodiments can also be used in other examples, embodiments, etc.

[0015] (Embodiment) First, referring to FIGS. 1 and 2, the configuration of the supply air grille 1 according to the embodiment of the present invention will be described. FIG. 1 is a bottom perspective view of the supply air grille 1 viewed from the indoor side showing the state where the supply air grille 1 is installed on the ceiling surface 5. FIG. 2 is a cross-sectional perspective view of the supply air grille 1 showing the state where the supply air grille 1 is connected to the heat insulating duct 13. Here, a ceiling opening 8 that communicates the ceiling cavity 11 and the interior is provided in the ceiling surface 5. Further, a heat insulating duct 13 for transporting the conditioned air 12 is extended in the vicinity of the ceiling opening 8 of the ceiling cavity 11.

[0016] The supply air grille 1 includes a main body portion 2 and a panel portion 6.

[0017] The main body 2 is a component that holds the panel 6 while being fixed to the ceiling surface 5. The main body 2 comprises a thin main body plate 3, an upper main body flange 9, and an outdoor side opening 10.

[0018] The main body plate 3 is formed in a rectangular plate shape and is fixed to the ceiling surface 5 by a fixing jig or the like. In other words, the main body 2 is fixed to the ceiling surface 5 by the fixing of the main body plate 3 to the ceiling surface 5. For aesthetic reasons, the main body plate 3 is preferably formed in a square shape among rectangles. The main body plate 3 has a fixing surface 4.

[0019] The fixed surface 4 is the upper surface of the main body thin plate 3 and is the surface facing the ceiling surface 5. The fixed surface 4 is in contact with the ceiling surface 5. Therefore, the ceiling surface 5 and the fixed surface 4 are approximately parallel to each other.

[0020] The upper flange 9 of the main body is formed in a substantially cylindrical shape and is provided projecting vertically upward from the fixing surface 4. The upper flange 9 of the main body is inserted into the ceiling opening 8 when the fixing surface 4 is brought into contact with the ceiling surface 5. The outer circumference of the upper flange 9 of the main body coincides with the inner circumference of the insulated duct 13 and is fitted into the insulated duct 13.

[0021] The outdoor opening 10 is an opening provided at the protruding tip of the upper flange 9 of the main body. The outdoor opening 10 allows the air-conditioned air 12 transported by the insulated duct 13 to be ventilated into the interior of the air supply grille 1 by fitting the upper flange 9 of the main body into the insulated duct 13.

[0022] The panel section 6 is a component mounted vertically below the main body section 2. The panel section 6 straightens the conditioned air 12 taken into the air supply grille 1 through the outdoor opening 10 in a direction substantially parallel to the fixed surface 4. The panel section 6 includes a thin panel plate 7.

[0023] The panel sheet 7 is part of the panel section 6 and is formed in a rectangular plate shape. The panel sheet 7 is positioned opposite the main body sheet 3 with a certain gap between them. In other words, the panel sheet 7 is approximately parallel to the main body sheet 3 at a certain distance. For aesthetic reasons, the panel sheet 7 is preferably formed in a square shape among rectangles, and more preferably in a square shape that is the same size as or larger than the main body sheet 3.

[0024] Next, the structure of the main body 2 will be described in more detail with reference to Figure 3. Figure 3 is a downward perspective view of the main body 2. In the following description, the center defined on the main body 2 will be referred to as the air supply grille center point 101a. Here, the air supply grille center point 101a is the intersection of the diagonals in the rectangular shape of the main body thin plate 3.

[0025] The main body section 2 further comprises a main body partition section 14, an indoor side opening 15, a main body thin plate offset line 17, and a recess 18.

[0026] The main body partition 14 is a thin flange formed in a roughly cylindrical shape with the air supply grille center point 101a as the center, and protruding vertically downward from the main body thin plate 3. In this embodiment, the main body partition 14 is provided in a roughly hexagonal cylindrical shape with a hexagonal outer circumference and some faces removed. In other words, the main body partition 14 is formed by removing four consecutive adjacent sides of the roughly hexagonal cylindrical shape, so that the parts corresponding to the removed sides form the indoor opening 15 described later. As a result, the main body partition 14 is not strictly a hexagonal cylinder for the sake of the indoor opening 15, but for the sake of understanding, the removed sides are assumed to exist virtually and it is described as roughly hexagonal cylindrical. Furthermore, it is preferable that the main body partition 14 is provided so that one side of the roughly hexagonal cylindrical shape is parallel to one side of the rectangular shape of the main body thin plate 3. The protruding tip of the main body partition 14 abuts against the panel thin plate 7 when the panel part 6 is attached to the main body part 2.

[0027] The indoor opening 15 is an opening for blowing out conditioned air 12 supplied from the outdoor opening 10 substantially parallel to the fixed surface 4. The indoor opening 15 is provided by removing four continuously adjacent sides of the substantially hexagonal cylindrical shape of the main body partition wall 14. The indoor opening 15 is composed of a first indoor opening 15a, a second indoor opening 15b, a third indoor opening 15c, and a fourth indoor opening 15d, corresponding to the four removed sides, and can realize four patterns of airflow direction. Since the indoor opening 15 is provided by removing four sides, which represent one-quarter of the total sides of the substantially hexagonal cylindrical shape, the angle between the line connecting one end of the indoor opening 15 and the line connecting the center point 101a of the air supply grille is 90 degrees, using the line connecting one end of the indoor opening 15 and the center point 101a of the air supply grille as a reference. Therefore, the indoor opening 15 can achieve four different airflow directions within the 90-degree range by arranging the panel section 6 in four different ways, but the details will be described later.

[0028] The main body thin plate offset line 17 is a virtual line provided in a rectangular shape on the outer circumference of the main body partition wall portion 14 on the main body thin plate 3, surrounding the main body partition wall portion 14. The main body thin plate offset line 17 is provided at a position a certain distance 16 inward from the outer circumference of the main body thin plate 3.

[0029] The recesses 18 are indentations for attaching the panel section 6 to the main body section 2. The recesses 18 are formed as circular indentations of the same diameter, one at each of the four corners of the rectangular shape of the main body thin plate offset line 17. For the sake of the explanation described later, the recess 18 closest to the indoor opening 15 will be designated as the first recess 18a, and in a view from below, the recesses will be designated as the second recess 18b, the third recess 18c, and the fourth recess 18d in a clockwise direction along the main body thin plate offset line 17. Furthermore, the corner of the main body thin plate 3 closest to the first recess 18a will be designated as the first corner 19a, the corner closest to the second recess 18b will be designated as the second corner 19b, the corner closest to the third recess 18c will be designated as the third corner 19c, and the corner closest to the fourth recess 18d will be designated as the fourth corner 19d.

[0030] Next, the structure of the panel section 6 will be described in more detail with reference to Figure 4. Figure 4 is an upper perspective view of the panel section 6. In the following description, the center defined on the panel section 6 will be used as the air supply grille center point 101b. The air supply grille center point 101b is the intersection of the diagonals in the panel sheet 7. Note that the air supply grille center point 101b is located vertically below the air supply grille center point 101a when the panel section 6 is attached to the main body section 2.

[0031] The panel sheet 7 comprises a panel partition portion 20, a panel partition opening 21, a panel sheet offset line 22, and a protrusion 23.

[0032] The panel partition 20 is a thin flange formed in a substantially cylindrical shape with the air supply grille center point 101b as the center, and protruding vertically upward from the panel sheet 7. In this embodiment, the panel partition 20 is provided in a substantially hexagonal cylindrical shape. The inner diameter of the panel partition 20 is formed to be slightly larger than the outer diameter of the main body partition 14. In other words, the inner circumference of the panel partition 20 abuts against the outer circumference of the main body partition 14 when the panel 6 is attached to the main body 2. Here, the panel partition 20 is provided with multiple panel partition openings 21 by removing a predetermined side of the substantially hexagonal cylindrical shape. That is, although the panel sheet 7 is not strictly a hexagonal cylinder due to the panel partition openings 21, for the sake of understanding, we will assume that the removed side exists virtually and describe it as substantially hexagonal cylindrical. Furthermore, it is preferable that the panel partition 20 is provided such that one side of the roughly hexagonal cylindrical shape is parallel to one side of the rectangular shape of the panel sheet 7. The protruding tip of the panel partition 20 abuts against the main body sheet 3 when the panel 6 is attached to the main body 2. In this embodiment, the height of the panel partition 20 and the main body partition 14 are the same.

[0033] The panel partition opening 21 is an opening for restricting the direction of air-conditioned air 12 blown out from the indoor opening 15 to a specific direction. In other words, the panel partition opening 21 is an opening that selectively realizes one of the four possible air-blowing directions that the indoor opening 15 can achieve, depending on the four patterns of arrangement of the panel section 6 described later. The panel partition opening 21 is provided by removing one or two sides from every four consecutive adjacent sides of the approximately hexagonal cylindrical shape of the panel partition section 20. In other words, multiple panel partition openings 21 are provided in the circumferential direction around the air supply grille center point 101b, with the ends of the panel partition openings and the ends of other panel partition openings at equal intervals. In this embodiment, as multiple panel partition openings 21, there is one large panel partition opening 21a provided by removing two sides, and two narrow panel partition openings 21b provided by removing one side.

[0034] The panel sheet offset line 22 is a virtual line provided in a rectangular shape around the outer circumference of the panel partition wall portion 20 on the panel sheet 7, surrounding the panel partition wall portion 20. The panel sheet offset line 22 is provided at a position a certain distance 16 inward from the outer circumference of the panel sheet 7.

[0035] The protrusions 23 are projections for attaching the panel section 6 to the main body section 2. The protrusions 23 are formed as cylinders of the same diameter, one at each of the four corners of the rectangular shape of the panel sheet offset line 22. The protrusions 23 have an outer diameter that matches the inner diameter of the recess 18 provided in the main body section 2 and are provided projecting vertically upward from the panel partition wall section 20. For the sake of the explanation to be given later, the protrusion 23 closest to the large panel partition wall opening 21a in Figure 4 will be referred to as the first protrusion 23a, and in a top view, they will be referred to as the second protrusion 23b, third protrusion 23c, and fourth protrusion 23d in order counterclockwise along the panel sheet offset line 22. Furthermore, the corner of the panel thin plate 7 closest to the first protrusion 23a is designated as the first panel corner 25a, the corner closest to the second protrusion 23b as the second panel corner 25b, the corner closest to the third protrusion 23c as the third panel corner 25c, and the corner closest to the fourth protrusion 23d as the fourth panel corner 25d. All protrusions 23 are configured to fit into any of the recesses 18, and by rotating the panel 6 by 90 degrees, it can be attached to the main body 2 in four different configurations.

[0036] Furthermore, since the panel portion 6 can be attached to the main body portion 2 by fitting the convex portion 23 into the concave portion 18, the convex portion 23 and the concave portion 18 can be called a pair of attachment parts. In this embodiment, the concave portion 18 is provided on the main body portion 2 side and the convex portion 23 is provided on the panel portion 6, but the arrangement may be reversed, with the convex portion 23 on the main body portion 2 side and the concave portion 18 on the panel portion 6. The important point is that the panel portion 6 can be attached to the main body portion 2 in four patterns of arrangement at 90-degree intervals in the circumferential direction of the main body portion 2.

[0037] The above describes the configuration of the air intake grille 1.

[0038] Next, we will explain the installation procedure for installing the air supply grille 1, configured as described above, on the ceiling surface 5.

[0039] As the first step, an insulated duct 13 connected to the air conditioner and air conditioning room is installed in the ceiling space 11.

[0040] As the second step, a ceiling opening 8 is provided in the area where the air supply grille 1 on the ceiling surface 5 will be installed.

[0041] As the third step, the insulated duct 13 is pulled down from the ceiling opening 8 and brought into the room.

[0042] In the fourth step, the insulated duct 13 is fitted into the outdoor opening 10 of the main body 2 and connected and secured.

[0043] In the fifth step, the upper flange 9 of the main body is bundled with the insulation duct 13 and inserted through the ceiling opening 8 into the space above the ceiling 11, and the fixing surface 4 is fixed to the ceiling surface 5. At this time, although not shown in the figure in this embodiment, the main body 2 and the ceiling surface 5 are fixed together with screws, for example.

[0044] In the sixth step, the panel portion 6 is pushed up and fixed onto the main body portion 2 from below so that each protrusion 23 fits into one of the recesses 18. At this time, the panel partition portion 20 will cover the outer circumference of the main body partition portion 14.

[0045] With the above steps, the installation of the air supply grille 1 is complete. In the sixth step, since all the protrusions 23 are configured to fit into any of the recesses 18, the panel 6 can be attached to the main body 2 in four different configurations by rotating it 90 degrees at a time. In addition, the indoor opening 15 allows the direction of the air-conditioned air 12 to be selectively set to one of four patterns depending on the configuration of the panel 6.

[0046] This structure will be explained by dividing the sixth step into each pattern with reference to Figures 5 and 6. Figure 5 is a top view showing the direction of the airflow out of the air supply grille in one case of the combination of the recessed part 18 and the protruding part 23 to be fitted, and Figure 6 is a top view showing the direction of the airflow out of the air supply grille in a case other than Figure 5 of the combination of the recessed part 18 and the protruding part 23 to be fitted. In the following explanation, the direction of the air supply grille center reference line 103, which passes from the center point 101a of the air supply grille through the midpoint of the side connecting the first corner 19a and the fourth corner 19d of the main body, is defined as the 0-degree direction.

[0047] Figure 5 illustrates the sixth step, in which the first protrusion 23a is fitted into the fourth recess 18d, the second protrusion 23b into the first recess 18a, the third protrusion 23c into the second recess 18b, and the fourth protrusion 23d into the third recess 18c.

[0048] In this case, all but the first indoor opening 15a of the indoor openings 15 are blocked by the panel partition 20. Here, as shown in the enlarged view in the upper right of Figure 5, the fourth indoor opening 15d on the inner circumference is blocked by the panel partition 20 on the outer circumference. The second indoor opening 15b and the third indoor opening 15c are similarly blocked on the outer circumference by the panel partition 20. Therefore, only the first indoor opening 15a is opened by the large panel partition opening 21a. As a result, the conditioned air 12 transported from the air conditioner flows into the supply air grille 1 via the insulated duct 13 and the outdoor opening 10, and then is blown into the room as a supply airflow 28 from the first indoor opening 15a. Here, the direction of the airflow 28 blown out from the first indoor opening 15a is, as shown in Figure 5, the direction of the open indoor reference line 102a, which is the vertical bisector of the first indoor opening 15a in a top view, and the angle (first reference angle 104) it makes with the reference airflow grille center reference line 103 is 0 degrees. Note that, for improved visibility, the open indoor reference line 102a and the airflow grille center reference line 103 are shown offset in Figure 5. Therefore, when the first protrusion 23a is fitted into the fourth recess 18d, the second protrusion 23b into the first recess 18a, the third protrusion 23c into the second recess 18b, and the fourth protrusion 23d into the third recess 18c, only the first indoor opening 15a is open, and the airflow 28 is blown out such that the angle it makes with the reference airflow grille center reference line 103 is 0 degrees.

[0049] Similarly, as shown in Figure 6(a), the sixth step involves fitting the first protrusion 23a into the third recess 18c, the second protrusion 23b into the fourth recess 18d, the third protrusion 23c into the first recess 18a, and the fourth protrusion 23d into the second recess 18b.

[0050] In this case, all of the indoor openings 15 except for the second indoor opening 15b are blocked by the panel partition 20. In other words, the narrow panel partition opening 21b opens only the second indoor opening 15b. Here, the direction of the airflow 28 blown out from the second indoor opening 15b is, as shown in Figure 6(a), the direction of the open indoor reference line 102b, which is the vertical bisector of the second indoor opening 15b in a top view, and the angle (first reference angle 104) it makes with the reference air supply grille center reference line 103 is 22.5 degrees. Therefore, when the first protrusion 23a is fitted into the third recess 18c, the second protrusion 23b into the fourth recess 18d, the third protrusion 23c into the first recess 18a, and the fourth protrusion 23d into the second recess 18b, only the second indoor opening 15b opens, causing the airflow 28 to be blown out such that the angle it makes with the reference air supply grille center reference line 103 is 22.5 degrees.

[0051] Similarly, as shown in Figure 6(b), the sixth step involves fitting the first protrusion 23a into the second recess 18b, the second protrusion 23b into the third recess 18c, the third protrusion 23c into the fourth recess 18d, and the fourth protrusion 23d into the first recess 18a.

[0052] In this case, all but the third indoor opening 15c of the indoor opening 15 are blocked by the panel partition 20. In other words, the narrow panel partition opening 21b opens only the third indoor opening 15c. Here, the direction of the airflow 28 blown out from the third indoor opening 15c is, as shown in Figure 6(b), the direction of the open indoor reference line 102c, which is the vertical bisector of the third indoor opening 15c in a top view, and the angle it makes with the reference air supply grille center reference line 103 is 45 degrees. Therefore, when the first protrusion 23a is fitted into the second recess 18b, the second protrusion 23b into the third recess 18c, the third protrusion 23c into the fourth recess 18d, and the fourth protrusion 23d into the first recess 18a, only the third indoor opening 15c opens, causing the airflow 28 to be blown out such that the angle (first reference angle 104) it makes with the reference air supply grille center reference line 103 is 45 degrees.

[0053] Similarly, as shown in Figure 6(c), the sixth step involves fitting the first protrusion 23a into the first recess 18a, the second protrusion 23b into the second recess 18b, the third protrusion 23c into the third recess 18c, and the fourth protrusion 23d into the fourth recess 18d.

[0054] In this case, all of the indoor openings 15 except for the fourth indoor opening 15d are blocked by the panel partition wall 20. In other words, the large panel partition wall opening 21a opens only the fourth indoor opening 15d. Here, the direction of the airflow 28 blown out from the fourth indoor opening 15d is, as shown in Figure 6(c), the direction of the open indoor reference line 102d, which is the vertical bisector of the fourth indoor opening 15d in a top view, and the angle it makes with the reference air supply grille center reference line 103 is 67.5 degrees. Therefore, when the first protrusion 23a is fitted into the first recess 18a, the second protrusion 23b into the second recess 18b, the third protrusion 23c into the third recess 18c, and the fourth protrusion 23d into the fourth recess 18d, only the fourth indoor opening 15d opens, causing the airflow 28 to be blown out such that the angle (first reference angle 104) it makes with the reference air supply grille center reference line 103 is 67.5 degrees.

[0055] As described above, by rotating the panel section 6 in 90-degree increments and changing the combination of the recessed portion 18 and the protruding portion 23 that are fitted together, it becomes possible to set the direction of the airflow 28 (the angle it makes with the airflow grille center reference line 103) from the four patterns shown in Figures 5 and 6.

[0056] The choice of which of the four above outlet directions to set should preferably be determined by the positional relationship between the supply air grille 1 and the area with poor insulation. The reason for this will be explained with reference to Figure 7. In the following explanation, window 29 will be used as an example of an area with poor insulation. Figure 7(a) is a side view simulating the temperature distribution and airflow of the air-conditioned room 30 when the outlet direction of the supply airflow 28 of the conditioned air is not directed towards the area around window 29, and Figure 7(b) is a side view simulating the temperature distribution and airflow of the air-conditioned room 30 when the outlet direction of the supply airflow 28 of the conditioned air is directed towards the area around window 29.

[0057] First, generally speaking, when there is a temperature difference between the inside and outside due to reasons such as air conditioning, a temperature region close to the outside temperature is formed around the window 29 in the air-conditioned room 30, where the heat balance between the inside and outside is large, especially due to poor insulation. That is, in winter, as shown in Figure 7(a), a high-temperature region 31 that is comfortable for occupants is formed throughout the air-conditioned room 30, but a main low-temperature region 32 is formed around the window 29. Also, it is known that the density of air is correlated with temperature, and the lower the temperature, the higher the density. In other words, the low-temperature air 33 in the main low-temperature region 32 flows downward from around the window 29 towards the floor 34 because of its high density. Subsequently, the low-temperature air 33 flows along the floor 34 towards the center of the air-conditioned room 30 and the wall 35 opposite the window 29, and a secondary low-temperature region 36 is formed on the floor 34. As a result, the temperature above the floor 34 in the air-conditioned room 30 becomes low, and a large temperature difference is formed between the upper and lower parts of the air-conditioned room 30, which leads to the problem of reduced comfort for the occupants.

[0058] Therefore, as a means of solving these problems, a method can be considered in which conditioned high-temperature air 37 is supplied to the main low-temperature region 32 formed around the window 29, as shown in Figure 7(b), thereby suppressing the formation of the main low-temperature region 32. This suppresses the amount of low-temperature air 33 that flows downward from around the window 29 towards the floor 34, thereby mitigating the formation of the sub-low-temperature region 36 on the floor 34 due to the density difference as described above. As a result, the temperature reduction of the floor 34 in the air-conditioned room 30 is suppressed, and the temperature difference between the upper and lower parts of the air-conditioned room 30 is also reduced, thus improving the comfort of the occupants.

[0059] However, the location of the air supply grille 1, which is the source of this high-temperature air 37, varies depending on the building's internal environment. This is because the insulated duct 13 connected to the air supply grille 1 has a certain outer diameter and is difficult to bend, due to the use of insulation material to suppress noise and power consumption and to maintain the insulation properties of the insulated duct 13. Therefore, if there are obstacles such as building equipment or columns other than the insulated duct 13 in the crawl space, ceiling space 11, or behind the walls where the insulated duct 13 is installed, it is necessary to install the insulated duct 13 while avoiding these obstacles. For this reason, the air supply grille 1 is installed in various locations depending on the building's internal environment. Furthermore, the windows 29 are also installed in various locations depending on the room layout.

[0060] In other words, in order to improve the comfort of occupants, it is necessary to blow the high-temperature air 37 from the air supply grille 1 towards the window 29. However, the optimal direction of blowing varies depending on the building's internal environment and construction environment such as the placement of the window 29, and conventional air supply grilles have been unable to address this issue.

[0061] Therefore, one concrete means of solving this problem is this embodiment. In this embodiment, even if the relative positional relationship between the window 29 and the air supply grille 1 changes, it is possible to set an appropriate airflow direction by rotating the panel portion 6 in 90-degree increments and changing the combination of the recessed portion 18 and the protruding portion 23 that are fitted together.

[0062] This structure will be explained using Figure 8. Figure 8(a) is a top view of the air-conditioned room 30, where the window 29 is located to the right of the air supply grille 1 in a top view. Figure 8(b) is a top view of the air-conditioned room 30, where the window 29 is located to the right of the air supply grille 1 and slightly higher than in Figure 8(a) in a top view. Figure 8(c) is a top view of the air-conditioned room 30, where the window 29 is located to the right of the air supply grille 1 and even higher than in Figure 8(b) in a top view. Figure 8(d) is a top view of the air-conditioned room 30, where the window 29 is located above the air supply grille 1 in a top view.

[0063] First, as shown in Figure 8(a), when the window 29 is located to the right of the air supply grille 1 in a top view, we will explain in detail the case where the second reference angle 107 formed by the window reference line 106, which is a straight line passing through the window center point 105, which is the center of the window 29 in a top view, and the air supply grille center reference line 103, is approximately 0 degrees. In this case, as shown in Figure 5, as the sixth step, the first protrusion 23a is fitted into the fourth recess 18d, the second protrusion 23b into the first recess 18a, the third protrusion 23c into the second recess 18b, and the fourth protrusion 23d into the third recess 18c. As a result, as shown in Figure 8(a), the air supply flow 28 is blown out in a blowing direction where the angle with respect to the air supply grille center reference line 103 is approximately 0 degrees.

[0064] Next, as shown in Figure 8(b), when the window 29 is located to the right of the air supply grille 1 and slightly above it in a top view, more specifically, when the second reference angle 107 is approximately 22.5 degrees, we will explain the case. In this case, as shown in Figure 6(a), as the sixth step, the first protrusion 23a is fitted into the third recess 18c, the second protrusion 23b into the fourth recess 18d, the third protrusion 23c into the first recess 18a, and the fourth protrusion 23d into the third recess 18c. As a result, as shown in Figure 8(b), the air supply flow 28 is blown out in a direction where the angle with respect to the air supply grille center reference line 103 is approximately 22.5 degrees.

[0065] As shown in Figure 8(c), when the window 29 is located to the right of the air supply grille 1 and further above than in Figure 8(b), a more detailed explanation will be given for the case where the second reference angle 107 is approximately 45 degrees. In this case, as shown in Figure 6(b), as the sixth step, the first protrusion 23a is fitted into the second recess 18b, the second protrusion 23b into the third recess 18c, the third protrusion 23c into the fourth recess 18d, and the fourth protrusion 23d into the first recess 18a. As a result, as shown in Figure 8(c), the air supply flow 28 is blown out in a blowing direction where the angle with respect to the air supply grille center reference line 103 is approximately 45 degrees.

[0066] As shown in Figure 8(d), when the window 29 is located above the air supply grille 1 in a top view, the case where the second reference angle 107 is approximately 67.5 degrees will be described in detail. In this case, as shown in Figure 8(d), as the sixth step, the first protrusion 23a is fitted into the first recess 18a, the second protrusion 23b into the second recess 18b, the third protrusion 23c into the third recess 18c, and the fourth protrusion 23d into the fourth recess 18d. As a result, as shown in Figure 6(c), the air supply flow 28 is blown out in a blowing direction where the angle with respect to the air supply grille center reference line 103 is approximately 67.5 degrees.

[0067] As described above, in the sixth step, the direction of air supply grille 1 can be set to the direction of window 29 by a simple procedure of selecting a combination of recess 18 and protrusion 23 such that the angle it makes with the reference air supply grille center reference line 103 is close to the second reference angle 107 in the construction environment. As a result, as shown in Figure 7, the main low-temperature region 32 formed around window 29 can be suppressed by sending conditioned high-temperature air 37 along the ceiling surface 5. Furthermore, since the high-temperature air 37 is blown out along the ceiling surface 5, it is possible to avoid directly exposing occupants to the high-temperature air 37, thereby suppressing discomfort to occupants.

[0068] Furthermore, in this embodiment, in all cases from Figure 8(a) to Figure 8(d), the air supply grille 1 is mounted on the ceiling surface 5 such that its outer periphery is parallel to the wall surface of the air-conditioned room 30. Therefore, it is possible to set the air supply flow 28 to the optimal airflow direction while maintaining the aesthetic appearance of the installation space.

[0069] Incidentally, as shown in Figure 3, the indoor opening 15 provided in the main body 2 is provided by removing four sides, which are one-quarter of the total surface area of ​​the roughly hexagonal cylindrical shape. Therefore, using the line connecting one end of the indoor opening 15 and the air supply grille center point 101a as a reference, the angle between the other end of the indoor opening 15 and the line connecting the air supply grille center point 101a is 90 degrees. Furthermore, in the case of Figure 5, the air supply flow 28 is blown out of the air supply grille 1 such that the angle it makes with the reference air supply grille center reference line 103 is 0 degrees, and in the case of Figure 6(d), the air supply flow 28 is blown out such that the angle it makes with the reference air supply grille center reference line 103 is 67.5 degrees. In other words, in this embodiment, the angle between the blowing direction with the smallest angle and the blowing direction with the largest angle with respect to the air supply grille center reference line 103 is 67.5 degrees. Therefore, it can be said that the angle between the discharge direction with the smallest angle and the discharge direction with the largest angle with respect to the central reference line 103 of the air supply grille is set to fall within the range of 90 degrees.

[0070] Next, we will explain the case where the positions of the window and the air supply grille differ from those in Figure 8, using Figure 9. Figure 9 is a diagram that assumes a construction environment that is symmetrical to Figure 8, with the opposing wall surface 35 in Figure 8 as the plane of symmetry. Specifically, Figure 9(a) is a top view of the air-conditioned room 30 in which the window 29 is located to the left of the air supply grille 1 when viewed from above. Figure 9(b) is a top view of the air-conditioned room 30 in which the window 29 is located to the left of the air supply grille 1 and slightly higher than in Figure 9(a) when viewed from above. Figure 9(c) is a top view of the air-conditioned room 30 in which the window 29 is located to the left of the air supply grille 1 and even higher than in Figure 9(b) when viewed from above. Figure 9(d) is a top view of the air-conditioned room 30 in which the window 29 is located above the air supply grille 1 when viewed from above.

[0071] In all cases, when viewed from above, the outer circumference of the thin main body plate 3 connecting the first corner 19a and the second corner 19b of the main body is mounted so that it faces the wall surface on which the window 29 is installed, as in Figures 8(a) to 8(c). In other words, the main body 2 is mounted rotated 90 degrees counterclockwise around the air supply grille center point 101a from the mounting orientation in Figure 8. Therefore, the reference air supply grille center reference line 103 is also located at a position rotated 90 degrees counterclockwise around the air supply grille center point 101a.

[0072] As shown in Figure 9(a), when the window 29 is located to the left of the air supply grille 1 in a top view, we will explain in detail the case where the second reference angle 107 formed by the window reference line 106, which is a straight line passing through the window center point 105, which is the center of the window 29 in a top view, and the air supply grille center point 101a, and the air supply grille center reference line 103 is approximately 67.5 degrees. In this case, as shown in Figure 6(c), as the sixth step, the first protrusion 23a is fitted into the first recess 18a, the second protrusion 23b into the second recess 18b, the third protrusion 23c into the third recess 18c, and the fourth protrusion 23d into the fourth recess 18d.

[0073] As shown in Figure 9(b), when the window 29 is located to the left of the air supply grille 1 and slightly above as shown in Figure 9(a) in a top view, we will explain in detail the case where the second reference angle 107 formed by the window reference line 106, which is a straight line passing through the window center point 105, which is the center of the window 29 in a top view, and the air supply grille center reference line 103, is approximately 45 degrees. In this case, as shown in Figure 6(b), as the sixth step, the first protrusion 23a is fitted into the second recess 18b, the second protrusion 23b into the third recess 18c, the third protrusion 23c into the fourth recess 18d, and the fourth protrusion 23d into the first recess 18a.

[0074] As shown in Figure 9(c), when the window 29 is located to the left of the air supply grille 1 and further above than in Figure 9(b) in a top view, we will explain in detail the case where the second reference angle 107 formed by the window reference line 106, which is a straight line passing through the window center point 105, which is the center of the window 29 in a top view, and the air supply grille center reference line 103, is approximately 22.5 degrees. In this case, as shown in Figure 6(a), as the sixth step, the first protrusion 23a is fitted into the third recess 18c, the second protrusion 23b into the fourth recess 18d, the third protrusion 23c into the first recess 18a, and the fourth protrusion 23d into the third recess 18c.

[0075] As shown in Figure 9(d), when the window 29 is located above the air supply grille 1 in a top view, the case where the second reference angle 107 formed by the window reference line 106, which is a straight line passing through the window center point 105 (the center of the window 29 in a top view) and the air supply grille center point 101, and the air supply grille center reference line 103 is approximately 0 degrees will be described. In this case, as shown in Figure 5, as the sixth step, the first protrusion 23a is fitted into the third recess 18c, the second protrusion 23b into the fourth recess 18d, the third protrusion 23c into the first recess 18a, and the fourth protrusion 23d into the third recess 18c. As described above, by changing the orientation of the indoor opening 15 while ensuring that the outer perimeter of the main body 2 is parallel to the wall surface of the air-conditioned room 30, it is possible to accommodate a variety of construction environments while maintaining the aesthetic appearance of the installation space.

[0076] Furthermore, in this embodiment, the main body partition 14 is integrally formed with the main body thin plate 3, and the panel partition 20 is integrally formed with the panel thin plate 7. However, the main body partition 14 and the panel partition 20 may be separate components. However, by forming them integrally as in this embodiment, the discharge direction can be set with a simple structure and method, thereby simplifying construction and shortening construction time.

[0077] Generally, the larger the area of ​​the air outlet from which air is blown out, the lower the air velocity of the blown air becomes. Therefore, as in this embodiment, by selecting and opening only the direction corresponding to the direction of the window 29 from the first indoor opening 15a, second indoor opening 15b, third indoor opening 15c, and fourth indoor opening 15d, the area of ​​the air outlet is reduced, and air can be blown out at a sufficient velocity.

[0078] In this embodiment, the main body partition 14 and the panel partition 20 are roughly hexagonal cylindrical in shape. However, there are no restrictions on the shape of either the main body or the panel partition, as long as four different airflow directions can be achieved by attaching the panel partitions to the circumferential direction of the main body 2 in four patterns of arrangement at 90-degree intervals. The following modifications will illustrate other shapes that the main body partition 14 and the panel partition 20 can take.

[0079] (Variation 1) Using Figure 10, we will explain the case of an air supply grille 1 in which the main body partition 14 and the panel partition 20 have a different shape from the approximately hexagonal cylindrical shape. Figure 10(a) is a downward perspective view of the main body 2 in the case of Modification 1, and Figure 10(b) is a downward perspective view of the panel 6 in the case of Modification 1. Note that the explanation of parts with the same structure as in the embodiment will be omitted.

[0080] As shown in Figure 10(a), the main body partition 14 is a thin flange formed to protrude vertically downward from the main body thin plate 3 in a roughly rectangular tubular shape. Here, a roughly rectangular tubular shape means that the main body thin plate 3 has a square outer circumference with chamfered edges at its four corners, centered on the air supply grille center point 101a, and this outer circumference is parallel to the four sides of the main body thin plate 3. The main body partition 14 is formed by removing the side surface between the midpoint of one of two adjacent rectangular sides of the main body thin plate 3 and the air supply grille center point 101a, using the midpoint of the other side as a reference. In other words, a flange is not provided in one-quarter of the area of ​​the entire surface of the roughly rectangular tubular shape. That is, the main body partition 14 is not strictly a rectangular tubular shape due to the presence of the indoor side opening 15, but for the sake of understanding, the removed side surface is assumed to exist virtually and is described as a roughly rectangular tubular shape.

[0081] Furthermore, as shown in Figure 10(b), the panel partition wall portion 20 is a thin-walled flange formed to protrude vertically upward from the panel sheet 7 in a roughly rectangular tubular shape. Here, the roughly rectangular tubular shape means that the outer circumference is square with chamfered edges at all four corners, centered at the air supply grille center point 101b on the panel sheet 7, and this outer circumference is parallel to the four sides of the panel sheet 7. Here, the inner diameter of the panel partition wall portion 20 is formed to be slightly larger than the outer diameter of the main body partition wall portion 14. In other words, the inner circumference of the panel partition wall portion 20 abuts against the outer circumference of the main body partition wall portion 14 when the panel portion 6 is attached to the main body portion 2. The panel partition wall portion 20 is also provided with one large panel partition wall opening 21a and two narrow panel partition wall openings 21b that are smaller than the large panel partition wall opening 21a. In other words, although the panel sheet 7 is not strictly a rectangular tube shape due to the panel partition opening 21, for the sake of understanding, we will assume that the removed sides also exist virtually and describe it as being approximately a rectangular tube shape.

[0082] Using Figure 11, the direction of airflow 28 from an air supply grille 1 having a main body partition 14 and a panel partition 20 as shown in Figure 10 will be explained. Figure 11 is a top view showing the direction of airflow from an air supply grille 1 in the case of Modification 1.

[0083] Figure 11(a) shows the case where the first protrusion 23a is fitted into the fourth recess 18d, the second protrusion 23b is fitted into the first recess 18a, the third protrusion 23c is fitted into the second recess 18b, and the fourth protrusion 23d is fitted into the third recess 18c.

[0084] In this case, all but the first indoor opening 15a of the indoor openings 15 are blocked by the panel partition wall 20. In other words, the large panel partition wall opening 21a opens only the first indoor opening 15a. Here, the direction of the airflow 28 blown out from the first indoor opening 15a is the direction of the open indoor reference line 102a, which is the vertical bisector of the first indoor opening 15a in a top view, as shown in Figure 11(a). In the embodiment, the angle (first reference angle 104) made with the reference airflow grille center reference line 103 was 0 degrees, but in the modified example 1, the airflow 28 is blown out at an angle of 11.25 degrees.

[0085] Figure 11(b) shows the case where the first protrusion 23a is fitted into the third recess 18c, the second protrusion 23b is fitted into the fourth recess 18d, the third protrusion 23c is fitted into the first recess 18a, and the fourth protrusion 23d is fitted into the second recess 18b.

[0086] In this case, all but the second indoor opening 15b of the indoor opening 15 are blocked by the panel partition wall 20. In other words, the narrow panel partition wall opening 21b opens only the second indoor opening 15b. Here, the direction of the airflow 28 blown out from the second indoor opening 15b is, as shown in Figure 11(b), the direction of the open indoor reference line 102b, which is the vertical bisector of the second indoor opening 15b in a top view. In the embodiment, the angle (first reference angle 104) made with the reference airflow grille center reference line 103 was 22.5 degrees, but in the modified example 1, the airflow 28 is blown out so that the angle is 33.75 degrees.

[0087] Figure 11(c) shows the case where the first protrusion 23a is fitted into the second recess 18b, the second protrusion 23b into the third recess 18c, the third protrusion 23c into the fourth recess 18d, and the fourth protrusion 23d into the first recess 18a.

[0088] In this case, all but the third indoor opening 15c of the indoor opening 15 are blocked by the panel partition wall 20. In other words, the narrow panel partition wall opening 21b opens only the third indoor opening 15c. Here, the direction of the airflow 28 blown out from the third indoor opening 15c is, as shown in Figure 11(c), the direction of the open indoor reference line 102c, which is the vertical bisector of the third indoor opening 15c in a top view. In the embodiment, the angle (first reference angle 104) made with the reference airflow grille center reference line 103 was 45 degrees, but in the modified example 1, the airflow 28 is blown out at an angle of 56.25 degrees.

[0089] Figure 11(d) shows the case where the first protrusion 23a is fitted into the first recess 18a, the second protrusion 23b into the second recess 18b, the third protrusion 23c into the third recess 18c, and the fourth protrusion 23d into the fourth recess 18d.

[0090] In this case, all of the indoor openings 15 except for the fourth indoor opening 15d are blocked by the panel partition wall 20. In other words, the large panel partition wall opening 21a opens only the fourth indoor opening 15d. Here, the direction of the airflow 28 blown out from the fourth indoor opening 15d is, as shown in Figure 6(c), the direction of the open indoor reference line 102d, which is the vertical bisector of the fourth indoor opening 15d in a top view. In the embodiment, the angle (first reference angle 104) made with the reference airflow grille center reference line 103 was 67.5 degrees, but in the modified example 1, the airflow 28 is blown out so that the angle is 78.75 degrees.

[0091] As described above, in Modification 1, by making the main body partition 14 and the panel partition 20 roughly rectangular tubular in shape, the angle that the air supply flow 28 makes with the air supply grille center reference line 103 can be set to four patterns: 11.25 degrees, 33.75 degrees, 56.25 degrees, and 78.75 degrees. In this way, the angle of the air supply direction can be appropriately set by the shape of the main body partition 14 and the panel partition 20.

[0092] (Modification 2) The case where the number of panel partition openings 21 is changed will be explained using Figure 12. Figure 12(a) is a downward perspective view of the main body in the case of modification 2, and Figure 12(b) is an upward perspective view of the panel. Note that the main body 2 in Figure 12(a) has the same shape as in Figure 10(a), so its explanation is omitted.

[0093] As shown in Figure 12(b), four panel partition openings 21 are provided in the panel partition 20. Specifically, in this embodiment and Modification 1, there is one large panel partition opening 21a and two narrow panel partition openings 21b that are smaller than the large panel partition opening 21a, but in Modification 2, only four narrow panel partition openings 21b are provided.

[0094] As shown in Figure 13, these four narrow panel partition openings 21b can be selectively opened to any one of the indoor openings 15a, 15b, 15c, and 15d by rotating the panel section 6 by 90 degrees each. As described above, even when four panel partition openings 21 are provided in the panel partition 20, the direction of the airflow 28 can be set to four patterns, as in Modification 2, where the angle between the airflow 28 and the airflow grille center reference line 103 is 11.25 degrees, 33.75 degrees, 56.25 degrees, and 78.75 degrees. In this way, as long as four different airflow directions can be realized by rotating the panel section 6 by 90 degrees each, the arrangement and number of panel partition openings 21 can be freely set.

[0095] Furthermore, in this embodiment and the two examples with different shapes of the main body partition 14 and the panel partition 20, the recess 18 and the protrusion 23 are formed on the outer circumference of the main body partition 14 and the panel partition 20, but they may also be formed on the inner circumference. However, in either case, attention must be paid to the structure, size, and position to minimize the increase in pressure loss of the air supply grille 1 and the adverse effects on the stability of the discharge direction.

[0096] Furthermore, in this embodiment, a fitting structure consisting of a recess 18 and a protrusion 23 was set as a pair of mounting parts, but there are no specific requirements. However, it is desirable to set a structure that simplifies construction and shortens construction time.

[0097] Furthermore, while this embodiment aims to improve the comfort of occupants in the air-conditioned room 30 where the air supply grille is installed, there is no specific purpose. This embodiment is characterized by its ability to appropriately set the airflow direction with a simple structure and simple installation while maintaining the aesthetic appeal of the space in which the air supply grille 1 is installed. For example, it may be used as an air supply grille to set the optimal direction of clean air discharge for the layout of each room so as to shorten the air age in the room.

[0098] Although the present invention has been described above based on embodiments, it can be easily inferred that the present invention is not limited in any way to the above embodiments, and that various improvements and modifications are possible without departing from the spirit of the present invention.

[0099] (Summary of the invention) The air supply grille according to the present invention comprises a main body having an outdoor opening for supplying air from the outside and a fixing surface for fixing to the ceiling surface, an indoor opening for blowing out air supplied from the outdoor opening substantially parallel to the fixing surface, a rectangular panel attached vertically below the main body, and a mounting part on which the panel can be attached in four patterns of arrangements at 90-degree intervals in the circumferential direction of the main body, wherein the indoor opening has four different blowing directions for each of the four arrangements, with all four directions falling within a 90-degree range, due to the attachment of the main body and the panel via the mounting part.

[0100] With this configuration, by appropriately changing the orientation of the panel and attaching it to the mounting area, it is possible to set the optimal direction of airflow for the installation environment while maintaining aesthetic appeal. In other words, it is possible to improve the comfort of occupants using a simple method, while suppressing the temperature difference between the upper and lower parts of the room and without forcing them to feel cold or dry due to direct exposure to the airflow.

[0101] Furthermore, in the air supply grille according to the present invention, the 90-degree range may be defined as the angle between one indoor opening and another indoor opening having the maximum angle, based on the relationship between the center defined on the main body and the direction of one of the four indoor opening patterns, and within 90 degrees.

[0102] Furthermore, in the air supply grille according to the present invention, the main body portion includes a substantially cylindrical main body partition portion that extends vertically downward from a fixed surface on the outer circumference of the outdoor opening and has an indoor opening, and the panel portion includes a substantially cylindrical panel partition portion that covers the main body partition portion and the indoor opening and extends vertically upward from the panel portion, and the panel partition portion may be configured to have a panel partition opening that selectively opens one of the four directions of the indoor opening for each of the four arrangement patterns.

[0103] This allows both the main body and the panel sections to be manufactured using a simple structure and integral molding, thereby simplifying installation and shortening installation time.

[0104] Furthermore, in the air supply grille according to the present invention, the indoor opening may be configured such that the angle between the line connecting the other end of the indoor opening and the center is 90 degrees, based on the line connecting one end of the indoor opening and the center defined on the main body.

[0105] Furthermore, in the air supply grille according to the present invention, the indoor opening may be formed between a line connecting the midpoint of one of the two adjacent rectangular sides of the panel and the center defined on the main body, with the line connecting the midpoint of the other side and the center as the reference.

[0106] Furthermore, in the air supply grille according to the present invention, the panel partition openings may be configured to be provided in multiple locations at equal intervals in the circumferential direction within the substantially cylindrical shape of the panel partition. [Industrial applicability]

[0107] The air supply grille according to the present invention is applicable as an air supply grille connected to a duct that transports conditioned air. [Explanation of Symbols]

[0108] 1. Air intake grille 2 Main body 3. Main body thin plate 4 Fixed surface 5. Ceiling surface 6 Panel section 7 Panel Thin Sheets 8. Ceiling opening 9 Upper flange of the main body 10 Outdoor opening 11 Attic 12. Air conditioning 13 Insulated duct 14 Main body bulkhead 15. Indoor opening 15a First indoor opening 15b Second indoor opening 15c Third room opening 15d Fourth indoor opening 16 fixed distance 17 Main body thin plate offset line 18 recesses 18a First recess 18b Second recess 18c Third recess 18d Fourth recess 19a First corner of main body 19b Second corner of main body 19c Main body third triangle 19d Main body square 20 Panel partition section 21 Panel partition opening 22 Panel thin sheet offset line 23 Convex part 23a First protrusion 23b Second protrusion 23c Third protrusion 23d Fourth protrusion 25a Panel first corner 25b Panel Second Corner 25c Panel Third Corner 25d Panel, Fourth Corner 28 Air intake flow 29 windows 30 Air conditioned room 31 High temperature area 32 Main low temperature area 33 Low-temperature air 34 On the floor 35 Opposing wall 36 Sub-low temperature area 37 High-temperature air 101 Air intake grille center point 102 Open room inner reference line 103 Air intake grille center reference line 104 First reference angle 105 Window center point 106 Window reference line 107 Second reference angle 201 Air Conditioning 202 Duct connection port 203 Air outlet 204 Ceiling surface 205 Intake airflow 206 Air intake grille

Claims

1. The main body has an outdoor opening for supplying air from the outside and a fixing surface for fixing to the ceiling, An indoor opening for blowing out air supplied from the outdoor opening substantially parallel to the fixed surface, A rectangular panel portion is mounted vertically below the main body portion, The mounting portion includes a mounting portion on which the panel portion can be attached in four patterns arranged at 90-degree intervals in the circumferential direction of the main body, The aforementioned indoor opening is An air supply grille in which the main body and the panel are attached via the mounting portion, and each of the four arrangement patterns has four different air outlet directions, with the four directions falling within a 90-degree range.

2. The main body portion is It has a main body made of a thin plate formed in the shape of a rectangular plate, The aforementioned 90-degree range is, The air supply grille according to claim 1, wherein, based on the relationship between the center defined by the intersection of the diagonals in the main body thin plate and the direction of one of the four patterns of indoor openings, the angle between the one indoor opening and another indoor opening having the largest angle is within 90 degrees.

3. The main body is, The exterior side of the exterior opening is provided with a substantially cylindrical body partition wall portion that extends vertically downward from the main body portion and has the interior opening, The aforementioned panel section is The panel partition is formed to cover the main body partition and the interior opening, and extends vertically upward from the panel, and is substantially cylindrical in shape. The aforementioned panel partition wall section is The air supply grille according to claim 1, further comprising a panel partition wall opening that selectively opens one of the four directions in the indoor opening for each of the four arrangement patterns.

4. The main body portion is It has a main body made of a thin plate formed in the shape of a rectangular plate, The aforementioned indoor opening is The air supply grille according to claim 3, wherein the angle between the line connecting the other end of the indoor opening and the center defined by the intersection of the diagonals in the main body thin plate is 90 degrees, with respect to the line connecting one end of the indoor opening and the center.

5. The main body portion is It has a main body made of a thin plate formed in the shape of a rectangular plate, The aforementioned indoor opening is The air supply grille according to claim 3, formed between a line connecting the midpoint of the other side of the rectangular shape in the main body and the center, with reference to a line connecting the midpoint of one of the two adjacent sides of the main body and the center defined by the intersection of the diagonals in the thin plate of the main body.

6. The aforementioned panel partition wall opening is The air supply grille according to claim 3, wherein a plurality of grilles are provided at equal intervals in the circumferential direction in the substantially cylindrical shape of the panel partition wall.

Images