Floor-blowing air conditioning device

Abstract

To provide a flow-blowing air conditioning device capable of lowering a floor height, in a double-floor type air conditioning device using an underfloor space for air conditioning.SOLUTION: An floor-blowing air conditioning device 1 is a double-floor type air conditioning device that uses an underfloor space for air conditioning. The floor-blowing air conditioning device comprises: a floor member 3 provided at a lower part of a room 2; an air supply chamber 5 formed below the floor member 3; and a blowout port 10 that blows air into the air supply chamber 5. The air supply chamber 5 includes: a first buffer 11 formed on a blowout side of a blowout port 10; a second buffer 12 formed at a position spaced apart from the first buffer 11; and a duct 13 connecting the first buffer 11 and the second buffer 12. Air blown out from the blowout port 10 is blown out from the first buffer 11 and the second buffer 12 into the air supply chamber 5.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an underfloor air conditioning system that supplies conditioned air to a room from under a double floor. [Background technology]

[0002] A conventional air conditioning system uses the underfloor space of a double floor as a duct, and supplies conditioned air from an air outlet below the floor material to an air supply chamber through floor material with numerous air supply holes on all sides. However, because floor material with numerous air supply holes is lightweight, there is a risk of it peeling off if the underfloor pressure becomes too high.

[0003] Therefore, an invention has been disclosed in which a rod-shaped resistance band is placed around the air outlet, narrowing the effective opening area near the air outlet, thereby equalizing the airflow distribution in the air supply chamber downstream from the resistance band and equalizing the underfloor differential pressure (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5881976 Summary of the Invention [Problem to be solved by the invention]

[0005] The standard floor height for systems that use the underfloor space of a double floor instead of a duct is approximately 150mm to 300mm. When the underfloor space is not used for air conditioning, the floor height of the double floor is approximately 100mm. Therefore, when the underfloor space is used for air conditioning, the floor height increases by 50mm compared to when the underfloor space is not used for air conditioning. In other words, to have the same number of floors when the underfloor space is used for air conditioning as when it is not used, the building height must be higher when using the air conditioning. Also, to have the same building height when the underfloor space is used for air conditioning as when it is not used, the number of floors when using the air conditioning must be fewer. It is possible to lower the ceiling height when using the underfloor space for air conditioning, but this will create a feeling of oppression and worsen the living environment.

[0006] Furthermore, in systems that use the underfloor space for air conditioning, it is possible to set the floor height of the double floor to approximately 100 mm, just as in systems that do not use the underfloor space for air conditioning. However, in order to reduce the increase in underfloor air speed and pressure, the depth of the air supply chamber 5 from the outlet to the opposite wall is limited to 10 m. The depth of a room in a typical building is approximately 13 to 16 m, so the current floor height is set to 150 mm or more.

[0007] An object of the present invention is to provide an underfloor air conditioning system that can lower the floor height in a double floor air conditioning system that uses the underfloor space for air conditioning. [Means for solving the problem]

[0008] The underfloor air-conditioning device according to the present invention comprises: In a double floor underfloor air conditioning system that uses the underfloor space for air conditioning, a floor member provided in a lower portion of the chamber; an air supply chamber formed below the floor member; an air outlet for blowing air into the air supply chamber; Equipped with The air supply chamber is a first buffer formed on the outlet side of the air outlet; a second buffer formed at a position spaced apart from the first buffer; a duct connecting the first buffer and the second buffer; Including, The air blown out from the air outlet is blown out from the first buffer and the second buffer into the air supply chamber. It is characterized by: [Effects of the Invention]

[0009] According to the underfloor air-conditioning system of the present invention, it is possible to lower the floor height in a double-floor air-conditioning system that uses the underfloor space for air-conditioning. [Brief explanation of the drawings]

[0010] [Figure 1] 1 shows an underfloor air conditioning system 1 according to a first embodiment. [Figure 2] This shows a cross section taken along line II-II of FIG. [Figure 3] This shows a cross section taken along line III-III in FIG. [Figure 4] 1 shows a floor-blowing air-conditioning device 1 according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of an underfloor air-conditioning device 1 according to the present invention will be described with reference to the drawings.

[0012] Fig. 1 shows a view of the underfloor air conditioner 1 of the first embodiment as seen from above. Fig. 2 shows a cross section taken along line II-II in Fig. 1. Fig. 3 shows a cross section taken along line III-III in Fig. 1. In Fig. 1, the direction in which air is blown out from the air outlet 10 is defined as the forward direction, with the forward direction indicated by arrow F, the rearward direction indicated by arrow B, the leftward direction indicated by arrow L, and the rightward direction indicated by arrow R. In Fig. 2, the upward direction is indicated by arrow U, and the downward direction indicated by arrow D.

[0013] The underfloor air-conditioning system 1 according to an embodiment of the present invention is of a full floor-air-air-air-discharge type, and is provided with a floor member 3 provided at the bottom of a room 2 and having a large number of air supply holes (not shown) on its entire surface, and an air supply chamber 5 formed below the floor member 3. The upper surface of the floor member 3 may be provided with a breathable carpet or a perforated carpet.

[0014] The room 2 is surrounded by floor members 3, walls 4, and a ceiling (not shown). The floor members 3 are supported above a slab S of the structure by support legs (not shown). The air supply chamber 5 is surrounded by the slab S, floor members 3, and walls 4.

[0015] The underfloor air-conditioning system 1 is provided with an outlet 10 on the rear wall 4a that forms the air supply chamber 5, which blows conditioned air sent from a fan (not shown) or the like into the air supply chamber 5 using a one-sided blowing method. The conditioned air blown into the air supply chamber 5 is supplied into the room 2 through the floor member 3.

[0016] The air supply chamber 5 includes a first buffer 11 formed on the outlet side of the air outlet 10, a second buffer 12 formed at a position spaced apart from the first buffer 11, and a duct 13 connecting the first buffer 11 and the second buffer 12.

[0017] The first buffer 11 is formed in the air supply chamber 5 so as to surround a portion of the space on the outlet side of the air outlet 10, excluding the first opening DO1 connected to the duct 13. The first buffer 11 is partitioned by a first boundary 110. As shown in FIG. 2, the first boundary 110 at least partially includes a first resistance band 11a that reduces the effective opening area of ​​a cross section perpendicular to the floor member 3. The first boundary 110 may also partially include a first wall 11b that blocks the cross section perpendicular to the floor member 3. In other words, the first buffer 11 is formed by being surrounded by the slab S, the floor member 3, the wall 4, the air outlet 10, and the first boundary 110, excluding the first opening DO1 connected to the duct 13. The first wall 11b does not necessarily have to be formed.

[0018] The second buffer 12 is formed to enclose a portion of the space in the air supply chamber 5, spaced apart from the first buffer 11, except for the second opening DO2 connected to the duct 13. The second buffer 12 is partitioned by a second boundary 120. As shown in FIG. 3 , the second boundary 120 includes at least a second resistance band 12a that reduces the effective opening area of ​​the cross section perpendicular to the floor member 3. The second boundary 120 may also include a second wall 12b that blocks the cross section perpendicular to the floor member 3. That is, the second buffer 12 is formed by being surrounded by the slab S, the floor member 3, the second resistance band 12a, and the second wall 12b, except for the second opening DO2 connected to the duct 13. The second wall 12b may not be formed.

[0019] The duct 13 connects the first buffer 11 and the second buffer 12, forming an air flow path. The duct 13 is formed by two duct walls 13a that enclose a cross section perpendicular to the floor member 3 of the air supply chamber 5. That is, the duct 13 is formed surrounded by the slab S, the floor member 3, and the two duct walls 13a, except for the first opening DO1 and the second opening DO2 at both ends that connect to the first buffer 11 and the second buffer 12.

[0020] Normally, the depth distance A of air supply chamber 5 from air outlet 10 to the opposing wall 4b must satisfy the relationship A≦100×H, where H is the height of air supply chamber 5. Therefore, if the height H of air supply chamber 5 is set to approximately 100 mm, the depth distance A of air supply chamber 5 from air outlet 10 to the opposing wall 4b is normally limited to 10 m.

[0021] The underfloor air conditioning system 1 of the embodiment according to the present invention has a first buffer 11, a second buffer 12, and a duct 13, and thereby blows air into the air supply chamber 5 from the first buffer 11 and the second buffer 12. By blowing air into the air supply chamber 5 from the tip 121 of the second buffer 12 in this way, it is possible to extend the depth A of the air supply chamber 5 from the outlet 10 to the opposing wall 4b while keeping the height H of the air supply chamber 5 low.

[0022] For example, if the height H of the air supply chamber 5 is set to approximately 100 mm, the depth distance A1 of the air supply chamber 5 from the tip 121 of the second buffer 12 to the opposing wall 4b is limited to 10 m, and the distance A from the air outlet 10 to the opposing wall 4b can be set to A1+A2, which is the sum of the distance A2 from the air outlet 10 to the tip 121 of the second buffer 12.

[0023] Furthermore, in the underfloor air-conditioning system 1 according to the embodiment of the present invention, at least a portion of the air blown from the first buffer 11 and the second buffer 12 into the air supply chamber 5 is blown in the same direction as the air blown out from the outlet 10, thereby reducing the maximum differential pressure within the air supply chamber 5. This makes it possible to prevent lightweight breathable tile carpets or perforated tile carpets from peeling off from the floor material 3.

[0024] The first boundary 110 that defines the first buffer 11 is formed by a first resistance band 11a that reduces the effective opening area of ​​the cross section perpendicular to the floor member 3. The first resistance band 11a can adjust the effective opening area, and can adjust the air volume balance of the air supply chamber 5. Note that the shape that surrounds the section defined by the first boundary 110 when viewed from above is not limited to a straight line, but may also be a curved line. Furthermore, the first boundary 110 is not limited to a flat surface, but may also be a curved surface.

[0025] The second boundary 120 that defines the second buffer 12 is formed by a second resistance band 12a that reduces the effective opening area of ​​the cross section perpendicular to the floor member 3. The second resistance band 12a can adjust the effective opening area, and can adjust the air volume balance of the air supply chamber 5. Note that the shape surrounding the section defined by the second boundary 120 when viewed from above is not limited to a straight line, but may also be a curved line. Furthermore, the second boundary 120 is not limited to a flat surface, and may also be defined using a curved surface.

[0026] In the underfloor air-conditioning system 1 according to the embodiment of the present invention, the first resistance band 11a and the second resistance band 12a obstruct the airflow from the air outlet 10, weakening the momentum of the airflow flowing along the wall 4 of the air supply chamber 5 and homogenizing the airflow distribution downstream from the first resistance band 11a and the second resistance band 12a within the air supply chamber 5. This also homogenizes the underfloor differential pressure.

[0027] Furthermore, the underfloor air-conditioning system 1 according to the embodiment of the present invention has the first resistance band 11a and the second resistance band 12a, which makes the airflow uniform and reduces the maximum air velocity, thereby lowering the maximum differential pressure under the floor. This prevents lightweight breathable tile carpets or perforated tile carpets from peeling off the floor material 3. Furthermore, the variation in the amount of air blown from the floor surface is suppressed, making the airflow uniform, creating a comfortable air-conditioned environment in the room 2.

[0028] Furthermore, in the underfloor air-conditioning system 1 according to the embodiment of the present invention, it is preferable to form spaces through which air can flow on both sides of the second buffer 12 in the width direction of the room 2. That is, the second boundary portion 120 is formed away from the wall 4, particularly the side wall 4c. By forming spaces on both sides of the second buffer 12, it is possible to form an air flow, and it is possible to adjust the air volume between the first buffer 11 and the second buffer 12 and at a position behind the second buffer 12.

[0029] Furthermore, if the effective opening area of ​​the cross section perpendicular to the floor member 3 formed by the first resistance band 11a is made smaller than the effective opening area of ​​the cross section perpendicular to the floor member 3 formed by the second resistance band 12a, the amount of air blown out from the first buffer 11 and the second buffer 12 can be adjusted, and the pressure difference within the air supply chamber 5 can be reduced.

[0030] As shown in Fig. 1, the first buffer 11 of the first embodiment is defined as a rectangular parallelepiped except for a first opening DO1 connected to the duct 13. A first resistance band 11a is formed on both the front surface 111 and the side surface 112 of a first boundary portion 110 that defines the first buffer 11. As shown in Fig. 2, the first resistance band 11a is formed by a member that rises from below to above at a height H1.

[0031] As shown in FIG. 1, the second buffer 12 of the first embodiment is defined as a rectangular parallelepiped, except for the second opening DO2 connected to the duct 13. The tip 121 and side 122 of the second boundary 120 defining the second buffer 12 are both formed with second resistance bands 12a, and the rear surface 123 is formed with a second wall portion 12b. As shown in FIG. 3, the second resistance band 12a is formed by a member that rises upward from below to a height H2. The height H2 of the second resistance band 12a is lower than the height H1 of the first resistance band 11a. Here, the height H1 of the first resistance band 11a and the height H2 of the second resistance band 12a are preferably set to approximately 1 / 2 to 2 / 3 of the height H of the air supply chamber 5.

[0032] In the first embodiment, the first resistance band 11a and the second resistance band 12a are configured to rise from below, but are not limited to this configuration and may be configured to hang down from above. A configuration in which the first resistance band 11a and the second resistance band 12a rise from below and a configuration in which the second resistance band hangs down from above may be combined. Furthermore, the shape of the first resistance band 11a and the second resistance band 12a may be any shape that reduces the effective opening area of ​​the cross section perpendicular to the floor member 3, and a mechanism that can change the height may be used.

[0033] 4 shows a top view of the underfloor air-conditioning system 1 of the second embodiment. As shown in FIG. 4, the shape of the underfloor air-conditioning system 1 according to the present invention may be changed to correspond to the shape of the room 2 or the air supply chamber 5.

[0034] As shown in Fig. 4, the first buffer 11 of the second embodiment is defined as a rectangular parallelepiped by the left side wall 4c L, except for the first opening DO1 connected to the duct 13. A first resistance band 11a is formed on both the front surface 111 and the side surface 112 of the first boundary portion 110 that defines the first buffer 11. As shown in Fig. 2, the first resistance band 11a rises from below to above at a height H1.

[0035] As shown in FIG. 4, the second buffer 12 of the second embodiment is defined in the shape of a home plate when viewed from above, excluding the second opening DO2 connected to the duct 13. The tip 121 and side 122 of the second boundary 120 defining the second buffer 12 are both formed with second resistance bands 12a, and the rear surface 123, which is obliquely formed when viewed from above, is formed with a second wall portion 12b. As shown in FIG. 3, the second resistance band 12a rises upward from below to a height H2. The height H2 of the second resistance band 12a is shorter than the height H1 of the first resistance band 11a.

[0036] In this way, by changing the shape etc. of the underfloor air conditioner 1 according to the second embodiment to correspond to the shape of the room 2 or the air supply chamber 5, the airflow in the air supply chamber 5 is made uniform, and the maximum air velocity is reduced, thereby lowering the maximum differential pressure under the floor. This makes it possible to prevent lightweight breathable tile carpets or perforated tile carpets from peeling off the floor material 3. Furthermore, because the variation in the amount of air blown from the floor surface is suppressed and the airflow is made uniform, a comfortable air-conditioned environment can be created in the room 2.

[0037] As described above, the underfloor air conditioner 1 of this embodiment is a double-floor underfloor air conditioner 1 that uses the underfloor space for air conditioning, and includes a floor member 3 provided under the room 2, an air supply chamber 5 formed below the floor member 3, and an air outlet 10 that blows air into the air supply chamber 5. The air supply chamber 5 includes a first buffer 11 formed on the outlet side of the air outlet 10, a second buffer 12 formed at a position spaced apart from the first buffer 11, and a duct 13 connecting the first buffer 11 and the second buffer 12, and the air blown out from the air outlet 10 is blown out from the first buffer 11 and the second buffer 12 into the air supply chamber 5. Therefore, the depth A of the air supply chamber 5 from the air outlet 10 to the opposing wall 4b can be extended while keeping the height H of the air supply chamber 5 low.

[0038] Furthermore, in the underfloor air-conditioning system 1 of this embodiment, at least a portion of the air blown from the first buffer 11 and the second buffer 12 into the air supply chamber 5 is blown in the same direction as the air blown out from the outlet 10. This reduces the maximum differential pressure within the air supply chamber 5. This prevents lightweight breathable tile carpets or perforated tile carpets from peeling off from the floor material 3.

[0039] Furthermore, in the underfloor air-conditioning system 1 of this embodiment, the first buffer 11 is defined by a first boundary 110, which at least partially includes a first resistance band 11a that reduces the effective opening area of ​​the cross section perpendicular to the floor member 3; the second buffer 12 is defined by a second boundary 120, which at least partially includes a second resistance band 12a that reduces the effective opening area of ​​the cross section perpendicular to the floor member 3; and the duct 13 is formed by two duct walls 13a that shield the cross section of the air supply chamber 5 perpendicular to the floor member 3. This uniformizes the airflow distribution within the air supply chamber 5 downstream from the first resistance band 11a and the second resistance band 12a. This also uniformizes the underfloor differential pressure.

[0040] Furthermore, in the underfloor air-conditioning system 1 of this embodiment, the effective opening area of ​​the cross section formed by the first resistance band 11a and perpendicular to the floor member 3 is smaller than the effective opening area of ​​the cross section formed by the second resistance band 12a and perpendicular to the floor member 3. Therefore, the volume of air blown out from the first buffer 11 and the second buffer 12 can be adjusted, and the pressure difference within the air supply chamber 5 can be reduced.

[0041] Furthermore, in the underfloor air-conditioning system 1 of this embodiment, the second buffer 12 is formed at a distance from the wall 4 that forms the air supply chamber 5. Therefore, by forming spaces on both sides of the second buffer 12, an air flow can be formed, and the air volume can be adjusted between the position between the first buffer 11 and the second buffer 12 and a position behind the second buffer 12.

[0042] It should be noted that the present invention is not limited to these embodiments, and that although the description of the embodiments includes many specific details for illustrative purposes, those skilled in the art may make various variations and modifications to these details. [Explanation of symbols]

[0043] 1... floor-blowing air conditioning device, 2... room, 3... floor member, 4... wall, 5... air supply chamber, 10...air outlet, 11...first buffer, 110...first boundary portion, 11a...first resistance band, 12...second buffer, 120...second boundary portion, 12a...second resistance band, 13...duct, 13a...duct wall

Claims

1. In a double floor underfloor air conditioning system that uses the underfloor space for air conditioning, a floor member provided in a lower portion of the chamber; an air supply chamber formed below the floor member; an air outlet for blowing air into the air supply chamber; Equipped with The air supply chamber is a first buffer formed on the outlet side of the air outlet; a second buffer formed at a position spaced apart from the first buffer; a duct connecting the first buffer and the second buffer; Including, The air blown out from the air outlet is blown out from the first buffer and the second buffer into the air supply chamber. A floor-blowing air conditioning system characterized by:

2. At least a portion of the air blown from the first buffer and the second buffer into the air supply chamber is blown in the same direction as the air blown from the air outlet.

2. The underfloor air-conditioning system according to claim 1, wherein the underfloor air-conditioning system is a floor-blowing air-conditioning system.

3. the first buffer is bounded by a first boundary; The first boundary portion includes at least a first resistance band that reduces an effective opening area of ​​a cross section perpendicular to the floor member, the second buffer is bounded by a second boundary; The second boundary portion includes, at least in part, a second resistance band that reduces an effective opening area of ​​a cross section perpendicular to the floor member, The duct is formed by two duct walls that shield a cross section of the air supply chamber perpendicular to the floor member.

2. The underfloor air-conditioning system according to claim 1, wherein the underfloor air-conditioning system is a floor-blowing air-conditioning system.

4. The effective opening area of ​​a cross section perpendicular to the floor member formed by the first resistance band is smaller than the effective opening area of ​​a cross section perpendicular to the floor member formed by the second resistance band.

4. The underfloor air-conditioning system according to claim 3.

5. The second buffer is formed at a distance from the wall that defines the air supply chamber.

2. The underfloor air-conditioning system according to claim 1, wherein the underfloor air-conditioning system is a floor-blowing air-conditioning system.

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