Air outlet unit, airflow control method, control device, ceiling system, and air conditioning system

Abstract

To maintain a blowing air velocity from a blowing port of a blowing unit at a predetermined value even when an air volume is narrowed by a damper provided in a main duct.SOLUTION: A blowing unit has a blowing port with a variable opening ratio provided in a blowing part 110, an air volume adjustment part 120 with a variable opening ratio arranged on the upstream side of the blowing part 110 in a casing 101, and an air velocity sensor 130 provided in a flow path on the upstream side of the air volume adjustment part 120. Based on an air velocity detected by the air velocity sensor 130, a controller 102 controls the opening ratio of the air volume adjustment part 120, and controls the opening ratio of the blowing port so that a blowing air velocity from the blowing port reaches a predetermined air velocity.SELECTED DRAWING: Figure 21

Description

Technical Field

[0001] The present invention relates to a blowing unit, an air volume control method, a control device for a blowing unit, 、 a system ceiling having a blowing unit , and air conditioning systems and is related thereto.

Background Art

[0002] For example, as disclosed in Patent Document 1, conventionally, there has been no device that directly adjusts the air volume of air-conditioning air for each ceiling blowing unit. Instead, the opening degree of dampers provided in the main duct has been adjusted by the VAV method to adjust the air volume collectively.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the opening area of the blowing outlet of the conventional ceiling blowing unit is constant, for example, when the required air volume from the blowing outlet is reduced during energy-saving operation or the like, and the air volume is restricted by a damper (VAV unit) provided in the main duct (collective duct for each predetermined area), there is a problem that the blowing wind speed from the blowing outlet decreases and the reach distance of the supply air becomes short.

[0005] The present invention has been made in view of such a point, and aims to solve the above problem by maintaining the blowing wind speed from the blowing outlet of the unit even when the air volume is restricted by a damper provided in the main duct.

Means for Solving the Problems

[0006] To achieve the above object, the present invention Air supplied from the ductFrom the air outlet Eject into the target space A blowing unit comprising a blowing port with a variable opening ratio provided on the blowing side end face, and a unit located upstream of the blowing port within the casing of the unit. Air volume adjustment unit And provided in the flow path upstream of the airflow adjustment unit. Furthermore, an airflow detection unit detects the airflow rate of the air supplied from the duct. , and a control unit, the control unit is the Air volume detection unit of detection The airflow based on the results shall be such that the airflow becomes a predetermined airflow. Control the airflow adjustment unit , the above Control of the airflow adjustment unit The system is characterized by controlling the opening ratio of the outlet so that the airflow velocity from the outlet reaches a predetermined velocity, based on the resulting change in airflow.

[0007] According to the present invention, wind Based on the detection result of the airflow detection unit, which is installed in the flow path upstream of the airflow adjustment unit and detects the airflow rate supplied from the duct, the airflow adjustment unit is controlled so that the airflow rate becomes a predetermined airflow rate, and based on the change in airflow rate due to the control of the airflow adjustment unit, The opening ratio of the outlet is controlled so that the airflow velocity from the outlet reaches a predetermined velocity. Therefore, even if the amount of air sent to the outlet unit is reduced by a damper installed in the main duct, for example, it is possible to maintain the airflow velocity from the outlet of the unit.

[0008] The airflow adjustment unit may be configured such that a first ventilation plate has a plurality of diamond-shaped openings, and a second ventilation plate has a plurality of diamond-shaped openings and is movable in parallel relative to the first ventilation plate, and that some or all of the openings of the first ventilation plate and the second ventilation plate overlap due to the parallel movement.

[0009] With the airflow adjustment unit having such a configuration, the opening ratio of the opening can be changed in proportion to the square of the parallel movement distance by relatively moving the first ventilation plate and the second ventilation plate in parallel. Therefore, compared to the case in which a ventilation plate with multiple circular openings is used, the characteristics become closer to equal percentage, and thus control of the opening ratio and airflow amount It is easy to control. Furthermore, a large effective aperture area can be achieved.

[0010] From a different perspective, the present invention is: From the air outlet A method for controlling the airflow rate of the supplied air, An airflow detection unit is provided to detect the airflow rate supplied from the upstream flow path, and an airflow adjustment unit is provided in the flow path between the airflow detection unit and the outlet.The opening ratio of the outlet is made variable, Air volume detection unit of detection The airflow adjustment unit is controlled so that the airflow based on the result becomes a predetermined airflow, Control of the airflow adjustment unit The system is characterized by controlling the opening ratio of the outlet so that the airflow velocity from the outlet reaches a predetermined velocity, based on the resulting change in airflow.

[0011] Another aspect of the present invention is a control device for controlling a blowing unit capable of controlling the airflow rate of the blown-out supply air, wherein the blowing unit is air outlet And, inside the unit casing The aforementioned air outlet An airflow adjustment unit located on the upstream side, and provided in the flow path upstream of the airflow adjustment unit Air volume detection unit The control device has the following features: Air volume detection unit of detection The airflow based on the results should be set to the predetermined airflow. Control the airflow adjustment unit , the airflow adjustment unit Control The system is characterized by being configured to control the opening ratio of the outlet so that the airflow velocity from the outlet reaches a predetermined velocity, based on the resulting change in airflow.

[0012] Furthermore, the system ceiling according to the present invention is a system ceiling in which a plurality of the above-mentioned air outlet units are arranged in the ceiling, wherein the air outlet units are provided between the ceiling panels that constitute the ceiling, and the upstream flow path of the air volume adjustment section in the air outlet unit is connected to an air supply duct located in the space above the ceiling panels.

[0013] According to the present invention, multiple air outlet units installed in the ceiling can be individually controlled in terms of airflow, and the airflow velocity can be maintained at a predetermined speed. For example, when an indoor space is divided into multiple zones by partitions, an optimal air supply environment can be realized for each zone. Moreover, even if the partitions are moved and the zone configuration changes, an optimal air supply environment can be realized without changing the duct arrangement in the ceiling space. From yet another perspective, the present invention is an air conditioning system comprising a plurality of the aforementioned discharge units, characterized in that the discharge units are connected to the downstream side of branch ducts branching off from a main duct, and each of the plurality of discharge units can be controlled independently. [Effects of the Invention]

[0014] According to the present invention, even if the air volume is reduced by the damper provided in the main duct, it is possible to maintain the blowing wind speed from the blowing outlet of the unit.

Brief Description of the Drawings

[0015] [Figure 1] It is a perspective view schematically showing the configuration of the ceiling base structure in the system ceiling according to the embodiment. [Figure 2] It is a plan view schematically showing the configuration of the ceiling base structure of FIG. 1. [Figure 3] It is a side view schematically showing the configuration of the ceiling base structure of FIG. 1. [Figure 4] It is a perspective view schematically showing the configuration of the seismic connection member adopted in the ceiling base structure of FIG. 1. [Figure 5] It is a front view schematically showing the configuration of the seismic connection member of FIG. 4. [Figure 6] It is a side view schematically showing the configuration of the seismic connection member of FIG. 4. [Figure 7] It is a cross-sectional view schematically showing an arrangement example of the cylindrical member provided in the seismic connection member of FIG. 4. [Figure 8] It is a cross-sectional view schematically showing another arrangement example of the cylindrical member provided in the seismic connection member of FIG. 4. [Figure 9] It is a plan view schematically showing an arrangement example of the cross-member of the seismic connection member of FIG. 4. [Figure 10] It is a side view schematically showing an arrangement example of the cross-member of the seismic connection member of FIG. 4. [Figure 11] It is a side view schematically showing another arrangement example of the cross-member of the seismic connection member of FIG. 4. [Figure 12] It is a side view schematically showing a construction example of the equipment piping for the ceiling base structure of FIG. 1. [Figure 13] It is a side view schematically showing a construction example of the equipment appliances for the ceiling base structure of FIG. 1. [Figure 14]This is a schematic side view showing an example of the installation of equipment fixtures on the ceiling substrate structure shown in Figure 1. [Figure 15] This is an explanatory diagram showing the general configuration of the airflow adjustment mechanism. [Figure 16] Figure 1 is a schematic side view illustrating an example of a construction method for rearranging equipment fixtures in the ceiling substructure. [Figure 17] This is a schematic side view illustrating the general structure of other ceiling substructures. [Figure 18] Figure 1 is a schematic diagram illustrating the general construction method for the ceiling substructure. [Figure 19] Figure 1 is a schematic diagram illustrating the general construction method for the ceiling substructure. [Figure 20] Figure 1 is a schematic diagram illustrating the general construction method for the ceiling substructure. [Figure 21] This is a front view of the blowing unit according to the embodiment. [Figure 22] This is a bottom view of the blowing unit according to the embodiment. [Figure 23] This is a plan view of the airflow adjustment section in the blowing unit according to the embodiment. [Figure 24] This is a plan view of the airflow adjustment section in the blowing unit according to the embodiment. [Figure 25] This is a schematic diagram illustrating a system ceiling that employs the conventional VAV method. [Figure 26] This is an explanatory diagram showing the system ceiling in Figure 25 after the partition has been moved. [Figure 27] This is a schematic explanatory diagram showing a system ceiling employing the air outlet unit according to the embodiment. [Figure 28] This is an explanatory diagram showing the system ceiling in Figure 27 after the partition has been moved. [Figure 29] Figure 27 is an explanatory diagram showing how a worker receives airflow signals from the air outlet unit of the ceiling system on a tablet PC. [Figure 30] Figure 27 is a schematic diagram illustrating the configuration of an air conditioning unit that can be used in a system ceiling. [Figure 31] Figure 30 is a schematic diagram illustrating a system ceiling in which the air conditioning unit is installed in the space above the ceiling. [Modes for carrying out the invention]

[0016] The embodiments will now be described with reference to the drawings. Figures 1 to 3 are a perspective view, a plan view, and a side view, respectively, showing the schematic configuration of the ceiling base structure 1 in the system ceiling according to the embodiment. In the following description, elements having substantially the same functional configuration will be denoted by the same reference numerals to avoid redundant explanations.

[0017] The ceiling substructure 1 is a structure that defines the space above the ceiling of a living room R in a building structure, and a ceiling panel 42, described later, which functions as the finished ceiling of the living room R, is attached to its lower surface. The space above the ceiling S is the space formed between the ceiling panel 42 and the ceiling slab C of the building structure.

[0018] The ceiling base structure 1 includes a plurality of suspension members 10 suspended from the ceiling slab C of the building structure, seismic connection members 20 connected to the lower part of each suspension member 10, a bridging member 30 installed to connect adjacent seismic connection members 20, and a finished ceiling unit 40 connected to the lower part of the seismic connection members 20.

[0019] The suspension member 10 is provided hanging down from inserts 11 embedded at predetermined intervals in the ceiling slab C of the building structure, and suspends and fixes the ceiling base structure 1 and the ceiling space equipment P installed in the ceiling base structure 1 from the ceiling slab C. As the suspension member 10, for example, a fully threaded rod connected to the insert 11 (see illustration) or a wire (not shown) that is supported by being hooked onto a hook or the like connected to the insert 11 can be used.

[0020] The suspension members 10 (inserts 11) are installed at equal intervals on the ceiling slab C so that the bridging members 30, described later, can be arranged in a grid pattern in a plan view. The installation interval of the suspension members 10 is set to be smaller than, for example, the support interval specified for the ceiling space equipment P, described later.

[0021] The seismic connection member 20 is a member for connecting a plurality of suspension members 10 that hang down from the ceiling slab C to a bridging member 30, which is installed horizontally and will be described later. In the ceiling base structure 1, the suspension members 10 and the bridging member 30 are connected by the seismic connection member 20 in this way to form a frame on which the finished ceiling unit 40, described later, is installed.

[0022] Figures 4 to 6 are perspective views, front views, and side views illustrating the general configuration of the seismic-resistant connecting member 20.

[0023] The seismic-resistant connecting member 20 includes a cylindrical member 21 that forms a connection opening to which the bridging member 30 can be connected, an upper plate-shaped member 22a and a lower plate-shaped member 22b (hereinafter, these may be collectively simply referred to as "plate-shaped member 22") that sandwich and fix the cylindrical member 21, and a seismic-resistant plate 23 that extends downward from the lower surface of the lower plate-shaped member 22b.

[0024] As described above, the cylindrical member 21 is arranged such that, in a plan view, the bridging members 30 described later are arranged in a grid pattern, and multiple bridging members 30 are connected orthogonally to each other. Specifically, for example, as shown in Figure 7, four bridging members 30 are configured to be connectable such that their intersection angles are 90°. Alternatively, for example, as shown in Figure 8, one bridging member 30 may be provided through the cylindrical member 21, and two bridging members 30 may be connected orthogonally to the bridging member 30 provided through it.

[0025] The cylindrical member 21 has a cross-sectional shape that allows it to be connected to the bridging member 30 by being inserted through it. That is, for example, if the bridging member 30 is a square pipe, the cross-sectional shape is formed as a square (see illustration), and for example, if the bridging member 30 is a pipe member, the cross-sectional shape is formed as an annular shape (not shown).

[0026] The upper plate-shaped member 22a and the lower plate-shaped member 22b are positioned opposite each other so as to sandwich the cylindrical member 21 from above and below, fixing the positional relationship of the cylindrical member 21 (the extension direction of the connecting bridging member 30). Furthermore, a through hole 24 is formed in the upper plate-shaped member 22a, and the seismic-resistant connecting member 20 can be fixed to the suspension member 10 by, for example, screwing the suspension member 10 into the through hole 24.

[0027] The plate-shaped member 22 can be formed in any shape, such as rectangular or circular, in a plan view. However, if the plate-shaped member 22 is formed in a rectangular shape, for example as shown in the figure, the structural strength of the seismic-resistant connecting member 20 can be improved by aligning the installation direction of the cylindrical member 21 (the extension direction of the bridging member 30) with the top of the plate-shaped member 22.

[0028] The seismic plate 23 is a plate-shaped member that absorbs the shaking of the ceiling base structure 1 due to earthquakes, and more specifically, the shaking of the finished ceiling unit 40 located below the seismic connecting member 20. It extends downward from the lower plate-shaped member 22b. The seismic plate 23 is formed in a roughly trapezoidal shape in a front view, for example, with the upper side 23a being longer than the lower side 23b. The longer side of the seismic plate 23, the upper side 23a, is bent horizontally, and this bent portion is fixed to the lower surface of the lower plate-shaped member 22b. The shorter side of the seismic plate 23, the lower side 23b, is bent horizontally, and this bent portion is connected to the panel frame 41 of the finished ceiling unit 40, which will be described later.

[0029] By forming bent portions on the upper edge 23a and lower edge 23b of the seismic-resistant plate 23 in this manner, the structural strength of the seismic-resistant plate 23 can be improved.

[0030] Furthermore, as shown in the figure, the seismic plate 23 is fixed to the lower surface of the lower plate-shaped member 22b such that its upper edge 23a coincides with the extension direction of the bridging member 30, in other words, it follows the grid shape formed by the bridging member 30. The ceiling base structure 1 is particularly concerned with oscillation in the extension direction of the bridging member 30 that constitutes the grid shape, but by providing the seismic plate 23 along the grid shape in this way, the oscillation that is a concern in the ceiling base structure 1 can be appropriately dampened.

[0031] Furthermore, in the ceiling base structure 1 of the system ceiling according to the embodiment, as shown in the figure, two seismic-resistant connecting members 20 connected by one bridging member 30 are installed in an intersecting arrangement such that the planar directions of their respective seismic-resistant plates 23 intersect (preferably perpendicular) with each other. This allows for appropriate absorption of the oscillation of the ceiling base structure 1 in each of the extension directions (perpendicular directions) of the bridging member 30, thereby improving the seismic resistance of the ceiling base structure 1.

[0032] Although not shown in the diagram, from the viewpoint of absorbing the oscillation of the ceiling substrate structure 1 in each of the extension directions (orthogonal directions) of the bridging member 30, the seismic plates 23 of the seismic connecting member 20 may be arranged in a cross shape in a plan view along the extension direction of the bridging member 30.

[0033] Although not shown in the diagram, from the viewpoint of improving the seismic resistance of the ceiling base structure 1, in addition to the seismic plate 23 provided on the lower surface of the lower plate-shaped member 22b, another seismic plate 23 may be provided extending upward from the upper surface of the upper plate-shaped member 22a. In this case, by providing the seismic plate 23 on the upper surface side of the upper plate-shaped member 22a so as to intersect with the seismic plate 23 provided on the lower surface side of the lower plate-shaped member 22b in a plan view, the seismic resistance of the ceiling base structure 1 can be further appropriately improved.

[0034] Furthermore, as shown in Figure 6, the seismic connection member 20 may be provided with a vertical member 25 to connect the bent portion of the upper edge 23a and the bent portion of the lower edge 23b. The vertical member 25 is provided parallel to the plate surface of the seismic plate 23 so as to connect the upper edge 23a and the lower edge 23b. By providing the vertical member 25 in this way, the structural strength of the seismic plate 23 can be improved. As the vertical member 25, for example, a threaded rod (see illustration) or a wire (not shown) can be used. Also, when a threaded rod is used as the vertical member 25, the suspension member 10 suspended from the ceiling slab C and the vertical member 25 may be configured as a single unit. That is, the plate-shaped member 22 may be passed through and the suspension member 10 may be connected to the lower edge 23b of the seismic plate 23.

[0035] In this example, the bridging member 30 was inserted through the cylindrical member 21 for connection, but the cylindrical member 21 may be configured such that, for example, its end and the end of the bridging member 30 are fitted together for connection.

[0036] Let us return to the explanation of the ceiling substrate structure 1, referring again to Figures 1 to 3. The bridging member 30 is a member that is arranged to extend horizontally at the lower part of the suspension member 10, and is suspended from the ceiling slab C of the building structure by being installed to connect the two seismic connection members 20. For the bridging member 30, for example, a square pipe or tubular member made of stainless steel or aluminum can be used. The bridging member 30 is connected to the cylindrical member 21 of the seismic connection member 20, thereby forming a grid shape in plan view as described above.

[0037] Furthermore, it is desirable that the bridging member 30, which is positioned at the end of the ceiling base structure 1, be fixed to the building structure by having its tip contact the main beam B formed in the ceiling slab C of the building structure, as shown in Figures 9 and 10. The length of the bridging member 30 positioned at the end may be adjusted, for example, by cutting a bridging member 30 of a predetermined length, or by configuring the bridging member 30 to be expandable and contractible in the longitudinal direction. In other words, by appropriately adjusting the length of the bridging member 30 in this way, the position of the end of the bridging member 30 can be adjusted arbitrarily.

[0038] In this example, by bringing the bridging member 30 into contact with the main beam B in this manner, the ceiling substructure 1 is fixed in the horizontal direction, that is, horizontal swaying of the ceiling substructure 1 due to earthquakes, for example, is suppressed, and the seismic resistance of the ceiling substructure 1 is improved. In some cases, a fire-resistant coating material F is provided on the surface of the main beam B, but in the technology of the present invention, the term "main beam" may include such fire-resistant coating material F.

[0039] In the following explanation, we will use the example of fixing the ceiling substructure 1 to the building structure by bringing the bridging member 30 into contact with the main beam B, which is part of the building structure. However, the bridging member 30 does not necessarily have to be in contact with the main beam B. Specifically, as long as the ceiling substructure 1 can be fixed to the building structure, the bridging member 30 may be in contact with a crossbeam, column, or other part of the building structure. It should be noted that the aforementioned fire-resistant coating material F may be included in the "building structure" as described in the present invention.

[0040] Furthermore, if, for example, there is a length error between the multiple bridging members 30 that are in contact with the main beam B, or if there is an architectural error in the main beam B, or if there is an error in the thickness of the fire-resistant coating material F, then when the ceiling substrate structure 1 shakes due to an earthquake or the like, some bridging members 30 will properly contact the main beam B (fire-resistant coating material F), while others will not. In this case, if only some of the bridging members 30 are in contact with the main beam B, the load acting on the main beam B during shaking due to an earthquake or the like will be uneven, and there is a risk of damage to the ceiling substrate structure 1.

[0041] Therefore, in this example, it is preferable to provide an elastic member 31 at the end of the bridging member 30 to absorb the load generated during shaking caused by earthquakes, etc. As the elastic member 31, for example, a spring or rubber can be used. This allows the elastic member 31 to absorb the displacement caused by the contact between the bridging member 30 and the main beam B, that is, it reduces the load on the bridging member 30 and suppresses damage to the ceiling base structure 1.

[0042] Furthermore, if a sharp portion is formed at the end of the bridging member 30 (elastic member 31), this may cause the fire-resistant coating material F to peel off. To suppress such peeling of the fire-resistant coating material F, it is preferable to arrange a support member 32 facing the main beam B at the end of the bridging member 30 (elastic member 31) that abuts the fire-resistant coating material F. The support member 32 preferably has a flat surface facing the main beam B, for example, as shown in the figure. By arranging the support member 32 in this way, peeling of the fire-resistant coating material F can be suppressed, and the load on the bridging member 30 during shaking caused by earthquakes, etc., can be distributed and reduced.

[0043] Furthermore, from the viewpoint of suppressing the peeling of the fire-resistant coating material F, the ends of the crosslinking members 30 (elastic members 31) may be treated to eliminate sharp edges. Examples of such treatments include chamfering (rounding) the ends of the crosslinking members 30 (elastic members 31), attaching an elastic member (e.g., rubber), or attaching a surface member. By eliminating sharp edges on the ends of the crosslinking members 30 (elastic members 31) in this way, damage to the fire-resistant coating material F can be suppressed.

[0044] In the embodiments shown in Figures 9 and 10, the ceiling substructure 1 was fixed by bringing the bridging member 30 (support member 32) into contact with the fire-resistant coating material F provided on the surface of the main beam B. However, as shown in Figure 11, the bridging member 30 (support member 32) may be brought into direct contact with the main beam B.

[0045] Furthermore, in the examples shown in Figures 9 to 11, the bridging member 30 (support member 32) is in constant contact with the main beam B. However, the bridging member 30 may only come into contact with the main beam B (building frame) when the ceiling substructure 1 is shaking, for example, due to an earthquake. In such a case, the end of the bridging member 30 is positioned at a predetermined distance from the main beam B under normal circumstances.

[0046] The finished ceiling unit 40 includes a panel frame 41 suspended below the seismic connection member 20, and a ceiling panel 42 attached to the lower surface of the panel frame 41.

[0047] The panel frame 41 is a member that is suspended from the ceiling slab C by being connected to the bent portion of the lower edge 23b of the seismic plate 23, and is configured so that multiple ceiling panels 42 can be mounted side by side in a plan view.

[0048] The ceiling panel 42 is a plate-shaped member that forms the finished ceiling surface of the living room R, and is made of, for example, gypsum board. When the ceiling panel 42 is installed in this manner, a ceiling space S is formed between the ceiling panel 42 and the ceiling slab C.

[0049] Furthermore, as described above, when the length (end position) of the bridging member 30 is adjusted relative to the main beam B, the length of the finished ceiling unit 40 (panel frame 41 and ceiling panel 42) at the position corresponding to the bridging member 30 whose length has been adjusted in this way can also be adjusted as appropriate. That is, the length (width) of the panel frame 41 and ceiling panel 42 may be adjusted by cutting, for example, or they may be configured to be expandable or contractible. Also, since the finished ceiling unit 40 is installed to match the length of the bridging member 30, for example, various types of finished ceiling units 40 with different end widths may be prepared in advance.

[0050] Furthermore, in the ceiling substructure 1 in this example, a first space S1 is formed in a side view, surrounded by the ceiling slab C, the suspension member 10, and the bridging member 30, and a second space S2 is formed, surrounded by the seismic connection member 20, the bridging member 30, and the panel frame 41. In other words, in the ceiling space S according to this embodiment, the first space S1 and the second space S2 are formed in this order from above (towards the ceiling slab C).

[0051] As shown in Figures 1 to 3, ceiling-mounted equipment P and the like are installed in the first space S1. In other words, the first space S1 functions as a space for installing ceiling-mounted equipment P and the like. The ceiling-mounted equipment P is fixed to, for example, the suspension members 10 and bridging members 30 that define the first space S1 using fixing members 50. Any fixing member can be used as the fixing member 50, such as a U-shaped bracket, a saddle band, or a hinged band.

[0052] Furthermore, the ceiling space equipment P installed in the first space S1 can be arbitrarily selected from various types of equipment that can be installed in the ceiling space S, such as air conditioning ducts, air conditioning piping, circulation fans, water piping such as drainage piping and water supply piping, sprinkler piping, ventilation piping, gas piping, electrical wiring, signal wiring, telephone wiring, television antenna wiring, routers, antennas, LAN cables, or various sensors.

[0053] In this ceiling base structure 1, instead of suspending and fixing the ceiling equipment P etc. to the ceiling slab C as in the conventional method, the ceiling base structure 1 is fixed to the suspension members 10 and bridging members 30 using fixing members 50. Thus, the ceiling base structure 1 according to this embodiment serves both as a base material on which the ceiling panel 42 is installed and as a support material for fixing the ceiling equipment P. As a result, in this embodiment, only the suspension members 10 constituting the ceiling base structure 1 need to be suspended from the ceiling slab C, so the number of inserts embedded in the ceiling slab C and the number of suspension members suspended can be significantly reduced compared to the conventional method.

[0054] In this case, the embedding position of the insert 11 in the ceiling slab C does not need to be determined in accordance with the piping routes of each ceiling-mounted equipment P, but can be determined at predetermined intervals for hanging the suspension members 10 that constitute the ceiling base structure 1. In other words, since the embedding position of the insert 11 can be determined mechanically at predetermined intervals regardless of the piping routes of the ceiling-mounted equipment P, the time required for construction of the ceiling base structure 1 can be appropriately reduced.

[0055] Furthermore, since the number of suspension members 10 hanging from the ceiling substrate structure 1 is reduced in this way, interference between the suspension members 10 and the installation route of the ceiling-mounted equipment P is suppressed, making the design and construction of the piping route for the ceiling-mounted equipment P in the ceiling-mounted space S extremely easy.

[0056] Furthermore, even if, for example, a design change occurs in the piping route of the ceiling-mounted equipment P, the ceiling-mounted equipment P is installed simply by fixing it to the bridging member 30, etc., so there is no need to embed a new insert 11 in the ceiling slab C as in the conventional method, nor is there any need to prepare a new suspension member 10. This significantly reduces the cost and labor required for the construction of the ceiling-mounted equipment P in relation to the design change.

[0057] Furthermore, in the example described above, the ceiling equipment P is directly fixed to the ceiling substructure 1, which is fixed to the ceiling slab C and the main beam B. As a result, the ceiling equipment P is integrated with the ceiling substructure 1, and the seismic performance of the ceiling equipment P can be easily ensured compared to the case where the ceiling equipment P is suspended independently from the ceiling slab C.

[0058] Furthermore, according to the example described above, the installation interval of the suspension members 10 (inserts 11) is set smaller than the support interval specified for the ceiling-mounted equipment P installed in the ceiling substrate structure 1, as described above. Therefore, by fixing the ceiling-mounted equipment P to each suspension member 10 and bridging member 30 present in the piping route, the ceiling-mounted equipment P can be installed with support intervals that appropriately meet the construction standards.

[0059] Furthermore, the ceiling equipment P must be installed with a predetermined slope depending on its type. In such cases, for example, as shown in Figure 12, it is possible to create a slope in the ceiling equipment P by interposing a spacer 51 between the bridging member 30 and the ceiling equipment P. The material of the spacer 51 is not particularly limited, but it is preferable to use a material with thermal insulation properties in order to suppress heat conduction between the ceiling equipment P and the bridging member 30. Alternatively, for example, a thermal insulation member (not shown) may be interposed between the ceiling equipment P and the spacer 51.

[0060] The second space S2 functions as a workspace for carrying out tasks such as installing ceiling-mounted equipment P in the first space S1. In the example described above, as mentioned above, the ceiling-mounted equipment P is installed in the first space S1 and not in the second space S2, making it easy to secure adequate workspace for the installation of the ceiling-mounted equipment P.

[0061] Furthermore, if, for example, an indoor unit 60 of an air conditioning system that supplies air to a living room R, or a lighting fixture 61 for dimming the living room R, needs to be installed in the ceiling space S, these indoor unit 60 and lighting fixture 61 may be installed in the second space S2, as shown in Figure 13. In such a case, the indoor unit 60 and lighting fixture 61 are connected to the ceiling equipment P installed in the first space S1 via connecting piping 62.

[0062] Furthermore, a radiant panel (not shown) may be installed on the back side of the ceiling panel 42 facing the ceiling space S, in order to suppress heat transfer between the living room R and the ceiling space S and improve the air conditioning efficiency in the living room R. A refrigerant flow path is formed inside the radiant panel, and a refrigerant (e.g., hot or cold water) is passed through the refrigerant flow path. In this case, the refrigerant flow path is connected to the ceiling equipment P installed in the first space S1 via connecting piping (the connecting piping for the radiant panel is not shown).

[0063] Furthermore, as shown in Figure 14, a blowing unit 70 may be installed on the back side of the ceiling panel 42 facing the ceiling space S, which allows for individual adjustment of the airflow rate supplied to the living room R. The blowing unit 70 is connected, for example, via a connecting pipe 62 to a duct, which is a ceiling space facility P, located in the first space S1.

[0064] The air outlet unit 70 includes an air velocity measuring sensor 71 for measuring the air velocity of the air supplied from the connecting pipe 62, an air volume adjustment mechanism 72 for controlling the amount of air supplied to the living room R, and a controller 73 for controlling the operation of the air volume adjustment mechanism 72.

[0065] As shown in Figure 15, the airflow adjustment mechanism 72 comprises two perforated plates 72a and 72b, each having perforations. In the airflow adjustment mechanism 72, one of the two perforated plates 72a and 72b (perforated plate 72a in the illustrated example) is fixed in place, while the other (perforated plate 72b in the illustrated example) is slidably positioned. The perforations are formed in a rectangular, or more specifically, rhomboid shape, relative to the sliding direction of the perforated plate 72b.

[0066] In the dispensing unit 70, as shown in Figure 15, by moving the perforated plate 72b relative to the perforated plate 72a, air supplied from the duct as the ceiling equipment P can be introduced into the living room R at an appropriate flow rate. Furthermore, since the air supplied from the duct as the ceiling equipment P can be controlled independently for each dispensing unit 70 installed in the second space S2, as shown in Figure 14, even if the position of the partition W in the living room R is changed, the amount of air supplied to the living room R can be appropriately changed by controlling the dispensing unit 70 without changing the flow rate or velocity of the air flowing through the duct as the ceiling equipment P.

[0067] Conventionally, when accommodating changes in the position of partitions W in a living room R, design changes such as increasing, decreasing, or changing the arrangement of ducts as ceiling equipment P, or changing the opening degree of airflow control valves within the ducts, were necessary, requiring considerable effort and cost to accommodate changes in the position of partitions W in living room R. However, as described above, by arranging variable-volume air outlet units 70 in the second space S2, changes to the positional relationship between ducts and outlets are unnecessary, meaning that accommodating changes in the position of partitions W in living room R becomes extremely easy, and costs can be significantly reduced. Furthermore, since each air outlet unit 70 is equipped with an airflow adjustment mechanism 72, the amount of air supplied to living room R can also be adjusted very easily.

[0068] Furthermore, in this embodiment, since the punching holes are formed in a rhomboid shape with respect to the sliding direction of the punching plate 72b, the amount of air supplied to the living room R can be controlled exponentially with respect to the amount of sliding of the punching plate 72b. In other words, the amount of air supplied to the living room R can be controlled instantaneously.

[0069] The operation of the airflow adjustment mechanism 72 may be automatically controlled by the controller 73 based on the measurement results from the wind speed measurement sensor 71, for example, or it may be manually controlled from the living room R side, for example.

[0070] Furthermore, although Figure 15 illustrates the case where the punched holes formed in the perforated plates 72a and 72b are square, the shape of the punched holes is not limited to this, and they may be circular, for example. By forming the punched holes in a circular shape in this way, the amount of air supplied to the living space R can be controlled instantaneously. Furthermore, although the punching holes in Figure 15 are formed by a rectangle with a rhombic shape in the sliding direction, the punching holes may also be formed by a rectangle with a rectangular shape in the sliding direction. In this case, the amount of air supplied to the living space R can be controlled in proportion to the amount the punching plate 72b slides.

[0071] In this embodiment, the main body of the equipment, such as the indoor unit 60, lighting fixture 61, radiant panel, or air outlet unit 70, and the ceiling space equipment P that supplies power to the equipment are provided in the first space S1 and the second space S2, respectively, so that the equipment does not interfere with the ceiling space equipment P. In other words, it is possible to install the main body of the equipment in the ceiling space S very easily.

[0072] Furthermore, for example, if a room R is rearranged and it becomes necessary to change the installation location of equipment, the installation location of the equipment can be easily changed simply by swapping the positions of the equipment with the ceiling panel 42 located at the new location. In this case, since the equipment is connected to the ceiling equipment P via connecting pipes 62, the position of the equipment can be changed very easily simply by changing the routing of connecting pipes 62 without changing the piping route of the ceiling equipment P, as shown in Figure 16, for example.

[0073] The ceiling substructure 1 is configured as described above.

[0074] In the above example, the ceiling base structure 1 was configured to form a first space S1 and a second space S2 in the ceiling space S, and the ceiling equipment P was installed in the first space S1. However, the configuration of the ceiling base structure 1 is not limited to this, and for example, as shown in Figure 17, the first space S1 for installing the ceiling equipment P may be formed in multiple levels (two levels in the illustrated example). By configuring the first space S1 in multiple levels in this way, it is possible to secure more appropriate space for installing the ceiling equipment P and to further improve the seismic resistance of the ceiling base structure 1.

[0075] Next, the construction method for the ceiling substrate structure 1 described above will be explained with reference to the drawings.

[0076] When constructing the ceiling substrate structure 1, first, inserts 11 are embedded in the ceiling slab C at predetermined intervals, as shown in Figure 18(a). The timing of embedding the inserts 11 is not particularly limited; for example, they may be installed in advance before pouring the ceiling slab C, or they may be driven in after pouring the ceiling slab C.

[0077] Next, as shown in Figure 18(b), the suspension member 10 (a fully threaded rod in this embodiment) is suspended from the insert 11 embedded in the ceiling slab C.

[0078] Next, as shown in Figure 18(c), seismic connection members 20 are fixed to the lower part of each suspension member 10. Specifically, the seismic connection members 20 are fixed to the suspension members 10 by screwing the suspension members 10 into the through holes 24 formed in the upper plate-shaped member 22a of the seismic connection member 20. At this time, the height position and orientation of each seismic connection member 20 fixed to each suspension member 10 are adjusted so that at least the cylindrical members 21 that form the connection opening of the bridging member 30 are positioned opposite each other. Also, at this time, the orientation is determined so that the seismic plate 23 is positioned orthogonally between the two seismic connection members 20 that are connected by the bridging member 30 as described above.

[0079] Next, as shown in Figure 19(a), a bridging member 30 is erected to connect the seismic connection members 20 fixed to the lower part of the suspension member 10. The bridging member 30 is connected to the seismic connection members 20 by being inserted, for example, through a cylindrical member 21. Once the bridging member 30 is erected in this manner, a first space S1 is formed, surrounded by the ceiling slab C, the suspension member 10, and the bridging member 30.

[0080] Next, as shown in Figure 19(b), the ceiling-mounted equipment P is installed in the first space S1. The ceiling-mounted equipment P is not independently suspended from the ceiling slab C, but is fixed to, for example, a suspension member 10 or a bridging member 30 by a fixing member 50. In this case, if it is necessary to provide a slope for the ceiling-mounted equipment P, a spacer 51 is provided between the bridging member 30 and the ceiling-mounted equipment P, as shown in Figure 12.

[0081] Next, as shown in Figure 19(c), the panel frame 41 is connected to the lower edge 23b of the seismic plate 23 of the seismic connection member 20. Once the panel frame 41 is connected in this way, a second space S2 is formed, which is surrounded by the seismic connection member 20, the bridging member 30, and the panel frame 41.

[0082] Next, if it is necessary to place equipment such as an indoor unit 60 or lighting fixtures 61, the equipment is further placed in the second space S2, as shown in Figure 20(a). In such cases, the equipment and the ceiling equipment P are connected by connecting piping 62, as shown in Figure 20(b).

[0083] Subsequently, as shown in Figure 20(c), the ceiling panel 42 is attached to the panel frame 41, thereby completing the construction of the ceiling base structure 1.

[0084] The aforementioned ceiling substructure 1 is constructed as described above.

[0085] In the construction described above, the ceiling equipment P was installed in the first space S1 as shown in Figure 19(b), and then the panel frame 41 was connected as shown in Figure 19(c). However, the construction procedure for the ceiling base structure 1 is not limited to this, and the ceiling equipment P may be installed after connecting the panel frame 41 to the lower edge 23b of the seismic plate 23 of the seismic connection member 20, and before installing the ceiling panel 42.

[0086] Furthermore, in the construction method described above, various members constituting the ceiling base structure 1 were sequentially connected to the insert 11 embedded in the ceiling slab C. However, for example, the ceiling base structure 1 that has been pre-assembled externally may also be connected to the insert 11.

[0087] Next, as another example of the air outlet unit 70 used in the ceiling base structure 1 described above, we will explain the air outlet unit 100 according to the embodiment of the present invention shown in Figure 21.

[0088] The air outlet unit 100, like the air outlet unit 70 described above, has the function of individually setting the flow rate of air supplied to the living room R. Specifically, the air outlet unit 100 has an air outlet section 110 positioned in the opening between the ceiling panels 42, and a casing 101 positioned above the air outlet section 110. The upper surface of the casing 101 is provided with a controller 102 which constitutes the control unit, a connecting channel section 103 which is a connecting pipe 62 that is a branch duct branched from the main duct (not shown), and a connecting section 104 which connects the connecting channel section 103 and the casing 101.

[0089] As shown in Figure 22, the air outlet section 110 has multiple slit-shaped air outlets 112 formed in the panel 111. On the upper side of the panel 111, there is a slide panel 113 having openings of the same shape, size, spacing, and arrangement as the air outlets 112. Guide members 114 are provided on both sides of the slide panel 113, and both ends of the slide panel 113 are housed within the guide members 114, allowing the slide panel 113 to slide along the guide members 114 as shown by the reciprocating arrows in the figure.

[0090] The slide panel 113 is driven by the actuator 115. With this configuration, the opening ratio of the air outlet 112 changes as the slide panel 113 slides. Figure 22 shows the state where the air outlet 112 and the opening of the slide panel 113 overlap, in which case the opening ratio is 100%.

[0091] A volume control unit 120, as shown in Figure 23, is provided inside the casing 101. This volume control unit 120 has a first ventilation plate 121 that horizontally partitions the inside of the casing 101, and a second ventilation plate 122 positioned on top of the first ventilation plate 121. The first ventilation plate 121 and the second ventilation plate 122 each have rhombic openings 121a and 122a formed therein, respectively, of the same shape, size, and arrangement.

[0092] Guides 123 and 124 are formed at the opposing long sides of the first ventilation plate 121, and the opposing long sides of the second ventilation plate 122 are housed within the guides 123 and 124, respectively. The first ventilation plate 121 is fixed to the inner wall of the casing 101. With this configuration, the second ventilation plate 122 can move parallel to the first ventilation plate 121 as shown by the reciprocating arrows in Figure 23.

[0093] The parallel movement of the second ventilation plate 122 relative to the first ventilation plate 121 is achieved by the rotation of an actuator 125 provided on the second ventilation plate 122. Specifically, this actuator 125 has a rotating part 125a and is configured to move the second ventilation plate 122 in parallel with the first ventilation plate 121 by the rotation of the drive shaft 126 shown in Figure 21. The drive shaft 126 is driven by a drive mechanism 127 provided on the upper surface of the casing 101.

[0094] With the above configuration, the second ventilation plate 122 moves in parallel with respect to the first ventilation plate 121 based on the rotation of the actuator 125 by the drive mechanism 127. For example, the state shown in Figure 24 shows the state in which the rotating part 125a of the actuator 125 has rotated 45 degrees from the state shown in Figure 23. Compared to the state shown in Figure 23, the overlap between the opening 121a and the opening 122a is reduced, and the opening ratio is reduced accordingly.

[0095] As shown in Figure 23, the connecting channel section 103 is equipped with a wind speed sensor 130 as a wind speed measuring member. The wind speed sensor 130 has, for example, a propeller-type wind speed measuring unit 131 inside the connecting channel section 103. The wind speed measured by the wind speed sensor 130 is output to the controller 102, and the amount of airflow of the supply air flowing through the connecting channel section 103 is calculated based on the cross-sectional area of ​​the channel within the connecting channel section 103.

[0096] The calculated airflow rate is output as an airflow signal to, for example, the controller 102. Based on the received airflow signal, the controller 102 controls the drive mechanism 127 and operates the actuator 125 to achieve the desired predetermined airflow rate, thereby moving the second ventilation plate 122 in parallel with the first ventilation plate 121 and changing the opening ratio at the airflow adjustment unit 120. This controls the airflow rate of the supply air passing through the first ventilation plate 121.

[0097] Furthermore, based on the aforementioned airflow signal, the controller 102 controls the actuator 115 of the discharge unit 110 to slide the slide panel 113, changing the opening ratio of the discharge port 112, and controlling the airflow velocity of the air supplied from the discharge port 112 to a predetermined value, for example, 3 m / s.

[0098] As described above, according to the blowing unit 100 of this embodiment, the wind speed sensor 130 provided in the connecting flow path section 103 measures the wind speed of the supply air supplied to the blowing unit 100, and the actual airflow rate is detected based on this, so it is possible to control the airflow rate from the blowing unit 100 to, for example, a predetermined amount.

[0099] In this embodiment, the airflow is controlled by operating the actuator 125 to move the second ventilation plate 122 in parallel with respect to the first ventilation plate 121, thereby changing the opening ratio in the airflow adjustment unit 120. However, in this embodiment, the first ventilation plate 121 and the second ventilation plate 122 each have rhombic openings 121a and 122a of the same shape, size, and arrangement, respectively. Therefore, the opening ratio can be changed linearly by moving the second ventilation plate 122 in parallel, and the airflow can be easily controlled.

[0100] As described above, since the airflow velocity of the air supplied from the outlet 112 can be set to a predetermined value based on the airflow control by the airflow adjustment unit 120, it is possible to supply air at an appropriate velocity to the task space and living space even during cooling operation in summer and winter.

[0101] Furthermore, if multiple air outlet units 100 are installed on the ceiling, the airflow and air velocity can be controlled for each air outlet unit 100, allowing for appropriate air supply control to different zones within the room as needed.

[0102] In such cases, for example, it is possible to individually control the desired airflow velocity of the supplied air at the request of a person affected by the air supply from a particular air supply unit 100. In this case, the person may, for example, directly send control signals to the controller 102 using a PC or smartphone.

[0103] Furthermore, since the airflow and air velocity can be controlled for each individual air outlet unit 100, unlike the conventional VAV system, it is possible to easily adapt to changes in the size, number, etc., of the air-conditioned spaces, for example, when a living room R is divided by partitions to form multiple different air-conditioned spaces, by moving the partitions. This point has already been briefly explained with reference to Figure 14, but will be explained in more detail below.

[0104] In other words, when using the conventional VAV system to air-condition a room by arranging multiple air outlet units in the ceiling, the arrangement of ducts in the ceiling space S of the system ceiling K was complicated, as shown in Figure 25. Specifically, when multiple air outlet units M1 to M6 were installed in the ceiling panel 42, for example, VAV units VD1 and VD2 were installed on ducts 161 and 162 branched from the main duct 160, and branch ducts 163, 164, 165, and 166 were connected to each of the ducts 161 and 162, and branch ducts 168 and 169 were further connected to branch duct 167, and these branch ducts 163, 164, 165, 166, 168, and 169 were connected to each of the air outlet units M1 to M6.

[0105] For example, as shown in Figure 25, if the living space R1 partitioned by partition W is supplied by outlet units M1 and M2 with airflow controlled by VAV unit VD1, and the living space R2 is supplied by outlet units M3 to M6 with airflow controlled by VAV unit VD2, then, as shown in Figure 26, if partition W is moved to the left side of the diagram, then living space R1 will be supplied with airflow controlled by both VAV units VD1 and VD2, and living space R2 will be supplied with airflow controlled by VAV unit VD2, resulting in inadequate airflow control for both living spaces R1 and R2.

[0106] Therefore, in conventional systems where airflow is controlled by the VAV system, as shown in Figure 26, when the partition W was moved, it was necessary to reinstall the ducts themselves that supply the airflow controlled by the VAV units VD1 and VD2, according to the discharge units M1 to M6 that supply air to the living spaces R1 and R2 after the move. In other words, as shown in Figure 26, for living space R1 after the partition was moved, a branch duct 170 was added so that the air supply from VAV unit VD1 would be supplied to discharge units M1 to M4, and branch ducts 165 and 170 would be connected to this branch duct 170. Similarly, for living space R2 after the partition was moved, duct 162 was removed so that the air supply from VAV unit VD2 would be supplied to discharge units M5 and M6. Thus, additions, removals, and modifications of ducts were necessary.

[0107] However, according to the system ceiling K employing the discharge unit 100 of the embodiment, as shown in Figure 27, even if multiple discharge units 100a to 100f are installed in the ceiling, the branch ducts branched from the main duct 160 can be directly connected to the connection flow path section 103 of the discharge unit 100. Therefore, the construction and arrangement of ducts in the space above the ceiling S are greatly simplified. The number of ducts to be installed is also significantly reduced.

[0108] Furthermore, even if the partition W is moved, as shown in Figure 28, there is no need to change, add, or remove any branch ducts connected to the main duct 106, and of course, the arrangement of the discharge units 100a to 100f remains the same. This is because, since the discharge units 100a to 100f can be individually controlled in terms of airflow and air velocity, even if the size and position of the living spaces R1 and R2 change due to the movement of the partition W, the airflow can be adjusted for each individual discharge unit 100.

[0109] The system ceiling employing the discharge unit 100 according to this embodiment also allows for the following operation. In other words, in a conventional system ceiling where multiple discharge units are installed in the ceiling using a VAV unit, during trial operation, it was necessary to measure the airflow at the outlet of each discharge unit, for example, when the VAV unit is operating at 100% airflow and 50% airflow, collect data, and adjust the VAV unit.

[0110] In contrast, with the ceiling system K employing the air outlet unit 100 according to the embodiment shown in Figure 29, the signal measured by the wind speed sensor 130 can be directly received by, for example, a tablet-type notebook computer N carried by worker Y, and the airflow from each air outlet unit 100 can be calculated and recorded as data on the tablet-type notebook computer N. In this case, worker Y only needs to sequentially move to a position where they can receive the airflow signal from the air outlet unit 100 to be measured, such as directly below the air outlet unit 100 to be measured. Compared to conventional work of this type, these tasks can be performed extremely simply and quickly.

[0111] Furthermore, based on the calculated airflow signal, it is possible to set the initial airflow volume of the supply air blown out from each outlet unit 100 from the tablet-type laptop N to the controller 102 or directly to the airflow adjustment unit 120. Of course, it is also possible to control the actuator 115 of the outlet unit 110 to adjust the blown air velocity at the same time.

[0112] Incidentally, conventionally, air conditioning equipment that supplies conditioned air to relatively large spaces such as offices typically involves connecting a heat source unit and an outdoor unit installed in the air conditioning machine room with an outdoor unit installed outside, using appropriate refrigerant piping and chilled / hot water piping to supply the necessary refrigerant and chilled / hot water to task air conditioners or packaged air conditioners installed indoors.

[0113] However, this would require a separate air conditioning machine room or shaft space for installing heat source equipment and air handling units, which would reduce the usable space in the office.

[0114] The air conditioning unit, configured as an integrated heat source unit for outdoor air processing as described below, was designed with this in mind. By integrating the heat pump into a single unit, it processes the outdoor air load while simultaneously generating chilled and hot water for office load processing, thereby reducing the need for the existing air conditioning machine room and shaft space, increasing the usable space in the office, and improving the rentable ratio.

[0115] The air conditioning unit 200 shown in Figure 30 has a casing 201. The inside of the casing 201 is divided by a partition plate 202, and an air supply side flow path space 203 and an exhaust side flow path space 204 are formed inside the casing 201.

[0116] An outside air inlet 205 is provided at the upstream end of the supply air flow path space 203. A chilled / hot water coil 220, a reheat coil 230, and a humidifier 240 are arranged in series downstream from the outside air inlet 205. A fan 206 is provided downstream of the humidifier 240, and blows the conditioned air that has passed through the chilled / hot water coil 220, the reheat coil 230, and the humidifier 240 to the supply air inlet 207, from which supply air SA is supplied. The chilled / hot water coil 220 is a heat exchanger that performs heat exchange between chilled / hot water passing through the piping that constitutes the chilled / hot water coil 220 and the air. The reheat coil 230 is a heat exchanger that performs heat exchange between the refrigerant passing through the reheat coil 230 and the air. The chilled / hot water coil 220 and the reheat coil 230 are arranged in the supply air side flow path space 203 as described above, and they control the temperature and humidity of the outside air OA passing through the supply air side flow path space 203.

[0117] In other words, since the chilled / hot water coil 220 and the reheat coil 230 are arranged in the supply air side flow path space 203, the temperature and humidity of the outside air OA passing through the supply air side flow path space 203 can be adjusted using the chilled water passing through the piping that constitutes the chilled / hot water coil 220, and then the temperature of the outside air passing through the supply air side flow path space 203 can be adjusted again using the refrigerant passing through the reheat coil 230. For example, when performing cooling, the outside air OA passing through the chilled / hot water coil 220 is cooled by the chilled water passing through the piping that constitutes the chilled / hot water coil 220.

[0118] Since the chilled water flowing through the piping that constitutes the chilled / hot water coil 220 flows in from the evaporator 270, if the outside air OA passing through the chilled / hot water coil 220 is cooled by the chilled water flowing through the piping that constitutes the chilled / hot water coil 220, the temperature of the outside air OA passing through the chilled / hot water coil 220 will be quite low, which is undesirable as the temperature of the outside air supplied to the living room R. Therefore, by raising the temperature of the outside air passing through the reheat coil 230 with the refrigerant (hot gas) passing through the reheat coil 230, the temperature of the outside air supplied to the living room R can be adjusted to an appropriate temperature.

[0119] As the refrigerant flows into the reheat coil 230 via the refrigerant piping, the refrigerant circulates through the evaporator 270, compressor 272, condenser 250, expansion valve 276, and reheat coil 230. Heat exchange occurs between the refrigerant passing through the reheat coil 230 and the outside air passing through the supply air side flow path space 203.

[0120] At the upstream end of the exhaust side flow path space 204, a return air inlet 208 is provided to take in return air RA. The taken-in return air RA passes through the downstream condenser 250 and is exhausted from the exhaust port 210 by the fan 209.

[0121] The partition plate 202 is provided with a connecting port 211, and the supply air side flow path space 203 and the exhaust air side flow path space 204 are connected by the connecting port 211.

[0122] Furthermore, the outside air inlet 205, the supply air inlet 207, the return air inlet 208, the exhaust port 210, and the connecting port 211 are each provided with corresponding dampers D1, D2, D3, D4, and D5, respectively, which can be freely adjusted to fully closed, fully open, or to predetermined intermediate openings.

[0123] In the exhaust side flow path space 204, a water-water heat exchanger 260 and an evaporator 270 are provided in order from the upstream side of the return air inlet 208.

[0124] The chilled and hot water exiting the primary side of the water-water heat exchanger 260 is supplied to the evaporator 270 by the pump 261. After heat exchange with the refrigerant in the evaporator 270, the chilled and hot water can be supplied to the chilled and hot water coil 220 via the three-way valve 262. In other words, the chilled water that flows into the evaporator 270 via the chilled water circulation piping undergoes heat exchange in the evaporator 270 and then flows into the chilled and hot water coil 220 through the chilled water circulation piping. More specifically, the chilled water that flows into the evaporator 270 undergoes heat exchange with the refrigerant circulating through the evaporator 270, compressor 272, condenser 250, and expansion valve 276. The chilled and hot water that flows through the piping constituting the chilled and hot water coil 220 undergoes heat exchange with the outside air OA passing through the supply air side flow path space 203 before flowing into the water-water heat exchanger 260. The chilled water that exchanges heat with the chilled water in the piping 264 in the water-water heat exchanger 260 is chilled water that has passed from the evaporator 270 through the chilled water circulation piping and the chilled / hot water coil 220. After passing through the water-water heat exchanger 260, it is pressurized by the pump 261 and sent back to the evaporator 270.

[0125] Furthermore, on the secondary side of the water-water heat exchanger 260, chilled and hot water enters and leaves the system through piping 264 between the system and other destinations that require chilled water outside the air conditioning unit 200, such as the task air conditioner 280 and the fan coil unit 281 described later.

[0126] The humidifier 240 is supplied with water for humidification from the water supply pipe 241 via valve 242. The water supplied from the water supply pipe 241 can also be supplied to the pump 261 via valve 243 and check valve 244.

[0127] The heat pump heat source unit of the air conditioning unit 200 has an evaporator 270, a compressor 272, a condenser 250, and an expansion valve 276. This heat pump heat source unit is located in the exhaust side flow path space 204. The refrigerant piping of the refrigeration cycle is provided with a valve 273 and a check valve 274. The valve 273 is an electrically operated flow control valve that adjusts its opening degree according to a control signal from a control device (not shown). The valve 273 adjusts its opening degree so that the temperature of the outside air that has passed through the reheat coil 230 is, for example, 19°C. A dryer 275 is also provided between the expansion valve 276 and the condenser 250 in the refrigerant piping leading to the evaporator 270 to remove foreign matter from the circulating refrigerant.

[0128] A water receiving pan 221 is provided on the underside of the chilled / hot water coil 220, the reheat coil 230, and the humidifier 240. Therefore, for example, if the temperature of the outside air OA passing through the chilled / hot water coil 220 is higher than the temperature of the chilled water passing through the piping that makes up the chilled / hot water coil 220, the outside air OA is dehumidified as it passes through the chilled / hot water coil 220. The condensed water produced during dehumidification is collected in the water receiving pan 221. The water collected in the water receiving pan 221 is discharged into the exhaust side flow path space 204 and, for example, sprayed onto the top of the condenser 250 through the watering pipe 222. A drain pan 251 is provided below the condenser 250, and the water that has been sprayed and accumulated in the drain pan 251 is discharged to the outside of the air conditioning unit 200 through the drain pipe 252.

[0129] The circulation path from the evaporator 270 through the chilled water circulation piping, chilled / hot water coil 220, water-water heat exchanger 260, and pump 261 back to the evaporator 270 is provided with the aforementioned three-way valve 262 installed in the bypass path of the chilled / hot water coil 220 and three-way valve 263 installed in the bypass path of the water-water heat exchanger 260. Both three-way valves 262 and 263 are electrically operated flow control valves, and the valve opening is adjusted according to a control signal from a control device (not shown).

[0130] The three-way valve 262 adjusts the flow rate of chilled water flowing into the chilled water coil 220 and the flow rate of chilled water flowing into the bypass path so that when cooling is performed, the temperature of the outside air that has passed through the chilled water coil 220 is, for example, 12°C, and when heating is performed, the temperature of the outside air that has passed through the humidifier 240 located downstream of the reheat coil 230 is, for example, 23°C. In the summer when cooling is performed, if the outside air temperature is high and the load is high, the flow rate of chilled water, which is the refrigerant water flowing through the chilled water coil 220 is increased. Conversely, in the summer when the outside air temperature is low (i.e., the load is low), the flow rate of chilled water, which is the refrigerant water flowing through the chilled water coil 220 is decreased.

[0131] On the other hand, during the winter when heating is performed, if the outside temperature is low and the load is high, the flow rate of hot water flowing through the chilled / hot water coil 220 is increased, and if the outside temperature is high in winter, i.e., the load is low, the flow rate of hot water flowing through the chilled / hot water coil 220 is decreased.

[0132] When cooling is performed, the three-way valve 263 is adjusted so that the temperature of the chilled water flowing out to the secondary side of the water-water heat exchanger 260 (the outlet side of the chilled water circulation pipe 264) is, for example, 16°C. On the other hand, when heating is performed, the flow rate of chilled water flowing into the primary side of the water-water heat exchanger 260 and the flow rate of chilled water flowing into the bypass path are adjusted so that the temperature of the chilled water (hot and cold water) flowing out to the secondary side from the water-water heat exchanger 260 is, for example, 40°C.

[0133] With the air conditioning unit 200 having the above configuration, the outside air OA introduced into the supply air side flow path space 203 from the outside air inlet 205 is subjected to temperature and humidity adjustment of the outside air OA passing through the supply air side flow path space 203 using a refrigerant circulating through the evaporator 270, compressor 272, condenser 250, and expansion valve 276. Furthermore, moisture is then added to the treated air by the humidifier 240 to adjust it to a predetermined humidity level, and then it can be supplied as supply air SA from the supply air supply port 207 by the fan 206 to the predetermined air-conditioned space.

[0134] The return air RA from the air-conditioned space is then introduced into the exhaust side flow path space 204 through the return air inlet 208. After heat exchange with the chilled / hot water returning from the demand source outside the air conditioning unit 200 via the water-water heat exchanger 260, and further heat exchange with the refrigerant-water heat exchanger 270, the air is exhausted out of the system through the exhaust port 210 by the fan 209 after passing through the condenser 250.

[0135] According to the above configuration of the air conditioning unit 200, the outside air load OA is first processed by the chilled / hot water coil 220, and then the sensible heat is adjusted by the reheat coil 230 before being supplied as supply air SA to the target air-conditioned space. The return air RA is then heat-exchanged with the return chilled / hot water from the demand source, such as a task air conditioner that uses chilled / hot water in the office as a heat source, and then heat-exchanged with the refrigerant of the heat pump before being exhausted. Therefore, it is possible to process the outside air load and supply it as supply air SA to the air-conditioned space while simultaneously generating chilled / hot water to be supplied for processing other air-conditioned loads. Furthermore, since the whole is configured and completed as a single unit, the conventional air conditioning machine room and shaft space are unnecessary, making it possible to secure a larger effective space in the office than before.

[0136] Next, we will explain the cooling and heating operations individually. When cooling is performed, when the refrigerant sent to the condenser 250 condenses, heat exchange occurs between the return air RA passing through the exhaust side flow path space 204 and the refrigerant sent to the condenser 250. Since the refrigerant is cooled by the return air RA passing through the exhaust side flow path space 204, it is preferable that the temperature of the return air RA passing through the exhaust side flow path space 204 is low.

[0137] Furthermore, when cooling is performed, the temperature of the return air RA taken into the air conditioning unit 200 via the return air duct (not shown) is lower than the temperature of the outside air OA taken into the air conditioning unit 200 via the outside air duct (not shown). As mentioned above, the heat pump heat source is installed in the exhaust side flow path space 204, so in this case, the efficiency of the heat source is improved.

[0138] On the other hand, when heating is performed, the four-way valve 271 causes the evaporator 270 to function as a condenser and the condenser 250 to function as an evaporator. In other words, the functions of the evaporator and condenser are reversed during cooling operation and heating operation. Specifically, during cooling operation, the refrigerant circulates in the order of compressor 272, condenser 250 (and reheat coil 230), expansion valve 276, and evaporator 270. At this time, the check valve 274 prevents refrigerant from flowing into the reheat coil 230 from the downstream side of the condenser 250 (the refrigerant flows from the downstream side of the compressor 272, branching into the condenser 250 and the reheat coil 230). In contrast, during heating operation, the refrigerant circulates in the order of compressor 272, evaporator 270 (condenser), expansion valve 276, and condenser 250 (evaporator). At this time, the check valve 274 prevents refrigerant from flowing into the reheat coil 230.

[0139] When the heat pump heat source unit is performing cooling, the opening of the expansion valve 276 and the power of the compressor 272 are adjusted so that the temperature of the chilled water in the chilled water circulation piping flowing from the evaporator 270 to the chilled / hot water coil 220 is, for example, 9°C. When the air conditioning system 1 is performing heating, the opening of the expansion valve 276 and the power of the compressor 272 are adjusted so that the temperature of the chilled water (chilled / hot water) in the chilled water circulation piping flowing from the evaporator 270 (condenser) to the chilled / hot water coil 220 is, for example, 47°C. By operating the heat pump heat source unit in this manner, proper temperature control is achieved by adjusting the opening of the three-way valves 262 and 263.

[0140] Furthermore, with the aforementioned air conditioning unit 200, even if there are fluctuations in the heat load during cooling or heating, fluctuations in indoor temperature and humidity can be suppressed as much as possible by adjusting the opening of the three-way valves 262 and 263 and valve 273. In other words, the supply of refrigerant water can be controlled in accordance with the load, whether the outside air temperature is high in summer or low in winter, or low in summer or high in winter. In the example shown in Figure 30, the water-water heat exchanger 260 is shown inside the air conditioning unit 200, but the water-water heat exchanger 260 may be installed outside the air conditioning unit 200. The above air conditioning unit 200 may also adjust the flow rate of chilled water or refrigerant using flow control valves or the like placed at appropriate locations.

[0141] This section describes the results of an experiment conducted on the cooling operation of the air conditioning unit 200, which was configured as a real unit. Specifically, outside air OA with a flow rate of 1300 CMH and a temperature of 30°C was introduced and processed at the connection port 211, with 500 CMH going to the chilled / hot water coil 220 side and 800 CMH going to the exhaust flow path space 204 side. As a result, it was possible to supply supply air SA at 19°C and 500 CMH. Furthermore, it was confirmed that the return air RA at 26°C and 500 CMH was mixed with the aforementioned 800 CMH to ultimately release exhaust air EA at 53°C and 1300 CMH.

[0142] As an example of chilled and hot water temperatures, during summer cooling, when the outside air temperature OA is 34.8°C, the inlet temperature of the chilled and hot water coil 220 can be set to 9°C, the outlet temperature to 42.8°C, the supply air temperature SA to 19°C, and the return air temperature RA to 28°C. In this case, when the chilled water temperature at the inlet of piping 264 was 19°C (flow rate 25 L / min), the outlet temperature was 16°C. Furthermore, during winter heating, when the outside air temperature OA was 2.0°C, the inlet temperature of the chilled / hot water coil 220 was 47°C, the outlet temperature was 14°C, the supply air temperature SA was 23°C, and the return air temperature RA was 26°C. In that case, when the chilled water temperature at the inlet of the piping 264 was 37°C (flow rate 25 L / min), the outlet temperature was 40°C.

[0143] As described above, the air conditioning unit 200 can supply supply air SA while simultaneously generating chilled and hot water for other air conditioning loads, and since it eliminates the need for conventional air conditioning machine rooms, for example, the air conditioning unit 200 can be housed in the ceiling space S, as shown in Figure 31. The supply air SA from the supply air port is supplied to the living room R from the discharge unit 290, and the return air RA can be taken in from the return air port 291 and introduced into the return air inlet. The discharge unit 290 may be the discharge unit 100 with airflow control described above. Outside air can be introduced, for example, from the outside air intake port 292 provided at the end of the ceiling space S, and exhaust air can be released from the exhaust port 293 provided at the end of the ceiling space S.

[0144] The chilled and hot water generated by the air conditioning unit 200 can then be used as a heat source for the task air conditioner 280 installed in room R and the fan coil unit 281 installed in the ceiling. Therefore, the air conditioning unit 200 can handle both ambient and task air conditioning in room R. [Industrial applicability]

[0145] This invention is particularly useful for air vent units installed in ceilings. [Explanation of symbols]

[0146] 1. Ceiling substructure 10 Suspension member 11 Inserts 20 Seismic connection members 21 Cylindrical member 22 Plate-shaped member 23 Earthquake-resistant plate 24 Through holes 25 vertical members 30 Bridge Member 31 Elastic members 32 Support material 40 Finishing Ceiling Unit 41 Panel frame 42 Ceiling Panels 50 Fixing member 51 Spacer 60 Indoor unit 61 Lighting fixtures 62 Connection piping 70, 100 air outlet units 102 Controllers 110 Air vent 112 air outlet 120 Air volume adjustment section 130 Wind speed sensor 200 Air Conditioning Units B girder C Ceiling slab F Fireproof coating K System Ceiling S Ceiling space S1 First Space S2 The Second Space P Ceiling equipment R living room W partition

Claims

1. A blowing unit that blows air supplied from a duct into a target space from a blowing port, A nozzle with a variable opening ratio is provided on the end face of the outlet side, An airflow adjustment unit is located upstream of the outlet within the unit's casing, An airflow detection unit is provided in the flow path upstream of the airflow adjustment unit to detect the airflow rate supplied from the duct, It has a control unit, The control unit, The airflow adjustment unit controls the airflow based on the detection result of the airflow detection unit so that the airflow becomes a predetermined airflow. A blowing unit characterized by controlling the opening ratio of the blowing port so that the blowing air velocity from the blowing port becomes a predetermined air velocity, based on the change in air volume associated with the control of the air volume adjustment unit.

2. The airflow adjustment unit includes a first ventilation plate having a plurality of rectangular openings, and a second ventilation plate having a plurality of rectangular openings that is movable in parallel with respect to the first ventilation plate, and as a result of the parallel movement, some or all of the openings of the first ventilation plate and the second ventilation plate overlap. The blowing unit according to claim 1, characterized in that the openings of the first ventilation plate and the openings of the second ventilation plate are arranged such that the direction of the parallel movement is in the direction of the diagonal of the rectangle.

3. The blowing unit is installed on the ceiling of the room and blows the air downward from the ceiling of the room toward the target space, The blowing unit according to either claim 1 or 2.

4. An airflow control method for controlling the airflow rate of the supply air blown out from a nozzle, An airflow detection unit is provided to detect the airflow rate supplied from the upstream flow path. An airflow adjustment unit is placed in the flow path between the airflow detection unit and the outlet. The opening ratio of the aforementioned outlet is made variable, The airflow adjustment unit controls the airflow based on the detection result of the airflow detection unit so that the airflow becomes a predetermined airflow. An airflow control method characterized by controlling the opening ratio of the outlet so that the airflow velocity discharged from the outlet becomes a predetermined velocity, based on the change in airflow associated with the control of the airflow adjustment unit.

5. A control device for controlling a blowing unit capable of controlling the airflow rate of the blown-out supply air, The aforementioned blowing unit is It comprises an air outlet, an airflow adjustment unit located upstream of the air outlet within the unit's casing, and an airflow detection unit provided in the flow path upstream of the airflow adjustment unit. The control device is A control device characterized in that it controls the airflow adjustment unit so that the airflow detected by the airflow detection unit becomes a predetermined airflow, and controls the opening ratio of the outlet so that the airflow velocity discharged from the outlet becomes a predetermined airflow velocity based on the change in airflow due to the control of the airflow adjustment unit.

6. A system ceiling in which multiple air outlet units described in any one of claims 1 to 3 are arranged on the ceiling, The air outlet unit is provided between the ceiling panels that make up the ceiling section. A system ceiling characterized in that the upstream flow path of the airflow adjustment section in the blowing unit is connected to an air supply duct located in the space above the ceiling panel.

7. An air conditioning system comprising a plurality of air outlet units as described in any one of Claims 1 to 3, The aforementioned discharge unit is connected to the downstream side of the branch ducts that branch off from the main duct. An air conditioning system characterized in that each of the multiple air outlet units can be controlled independently.

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