Air-conditioning ventilation system

Abstract

To further reduce the number of ducts and duct length by adopting a rational air-conditioning ventilation method so as to further promote labor saving in construction, and reduce the number of air control ports so as to promote resource saving of an air control port material and improve building flexibility.SOLUTION: An air-conditioning device 1 for air-conditioning an indoor space R, a ventilation device 2 for ventilating the indoor space R and a return air supply section 3 for supplying return air RA from the indoor space R to a ceiling space CS are provided. The ventilation device 2 is configured to ventilate the indoor space R via the ceiling space CS in the form of supplying outside air OA to the ceiling space CS. The air-conditioning device 1 includes a body unit 11 disposed on a ceiling part C separately from the ventilation device 2. The body unit 11 includes: a suction part 13 for sucking air in the ceiling space CS from a suction port 12; an air-conditioning part 14 for conditioning the sucked air; and a blowout port 15 for blowing out the air-conditioned air SA to the indoor space.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an air conditioning and ventilation system provided with an air conditioner that conditions the air inside a room and a ventilation device that ventilates the room. [Background technology]

[0002] Patent Document 1 describes an air conditioning and ventilation system of this type in which the air conditioner (1) is a ceiling cassette type having a main unit (indoor units 3a to 3d) placed in the ceiling, and ventilation devices (6a, 6b) connected to an intake duct (7) and an exhaust duct (10) leading to the outdoors are installed in the attic space.

[0003] In this air conditioning ventilation system, an air intake (an example of an air vent) is installed in the ceiling to supply outside air into the room using ventilation devices (6a, 6b), and the air intake and the ventilation devices (6a, 6b) are connected by an air intake duct (8a).

[0004] The main unit (indoor units 3a to 3d) of the air conditioner (1) is provided with a suction section such as a fan that draws in indoor air through an inlet, an air conditioning section such as a heat exchanger that conditions the drawn-in air, and an outlet from which the conditioned air is blown into the room. The main unit (indoor units 3a to 3d) is configured to draw in indoor air through the inlet, condition the drawn-in air in the air conditioning section, and blow the conditioned air into the room through the outlet. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-223643 Summary of the Invention [Problem to be solved by the invention]

[0006] In the air conditioning and ventilation system described in Patent Document 1, the main unit of the air conditioning unit is installed in the ceiling, not in the attic space, so there is no need to install an air intake duct for the air conditioning unit in the attic space, which reduces the number and length of ducts and saves labor in construction.

[0007] However, because the ventilation system's air intake ducts must connect the building's exterior to the air intakes installed in the ceiling, it is desirable to further reduce the number of ducts and their length to achieve greater labor savings in construction. Also, because the air intakes connected to the ventilation system's air intake ducts must be installed separately in the ceiling, it is desirable to reduce the number of air intakes to conserve resources used for air intake materials and to improve building flexibility by reducing the need to relocate air intakes when changing the indoor spatial layout.

[0008] In view of this situation, the main objective of the present invention is to provide an air conditioning and ventilation system that employs a rational air conditioning and ventilation method, thereby further reducing the number of ducts and their length, thereby further reducing the labor required for construction, and reducing the number of air vents, thereby saving resources required for air vent materials and improving building flexibility. [Means for solving the problem]

[0009] A first characteristic configuration of the present invention is an air conditioning and ventilation system including an air conditioner that air-conditions a room and a ventilation device that ventilates the room, A return air supply unit is provided that supplies return air from the room to the ceiling space, The ventilation device is configured to ventilate the room through the attic space by supplying outside air to the attic space, the air conditioning device has a main unit that is arranged on a ceiling portion separately from the ventilation device, The main unit is equipped with a suction section that draws air from the ceiling space through an intake port, an air conditioning section that conditions the drawn air, and an air outlet that blows the conditioned air into the room.

[0010] According to this configuration, the ventilation device ventilates the room through the attic space by supplying outside air to the attic space, and the main unit of the air conditioning device installed in the ceiling draws in the outside air supplied to the attic space by the ventilation device and the indoor air supplied to the attic space by the return air supply unit through the intake port, conditions the air, and blows the conditioned air into the room through the outlet, creating an air conditioning and ventilation system. Therefore, by installing the main unit of the air conditioning unit in the ceiling, the air intake duct for the air conditioning unit can be reduced, and the air intake duct for the ventilation unit does not need to connect the outside of the building to the air outlet installed in the ceiling, but only needs to connect the outside of the building to the attic space, so the number and length of ducts can be further reduced, and the air intake duct for the ventilation unit can also be reduced. Therefore, the number of ducts and duct length can be further reduced, further reducing the labor required for construction, and the number of air vents can be reduced, thereby saving resources required for air vent materials and improving building flexibility.

[0011] A second characteristic feature of the present invention is that the suction port of the main unit is disposed on the upper surface side of the main unit that faces the ceiling space.

[0012] According to this configuration, the main unit of the air conditioning unit can utilize the large upper surface area on the ceiling space side, and the intake port can be arranged in a position and manner suitable for drawing in air from the ceiling space (especially outside air supplied to the ceiling space by a ventilation device), and the air from the ceiling space can be optimally drawn in from the intake port arranged in that position and manner.

[0013] A third characteristic feature of the present invention is that the main body unit is provided with a filter that removes foreign matter contained in the air drawn in through the suction port.

[0014] According to this configuration, in the main unit of the air conditioning device, foreign matter contained in the air in the ceiling space that is sucked in through the intake port can be removed using a filter, and the clean air from which the foreign matter has been removed by the filter can be blown into the room through the outlet.

[0015] A fourth characteristic feature of the present invention is that the air outlets are arranged in the outer peripheral region on the lower surface side of the main unit, which faces the indoor side, and other members can be attached to the central region.

[0016] According to this configuration, the central area on the underside of the air conditioning unit's main unit, which faces the indoor side, can be used as mounting space for other components, such as lighting equipment, ceiling finishing materials, and interior materials such as wallpaper. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a diagram showing a schematic configuration of an air conditioning ventilation system according to the present invention; [Figure 2] (A) A diagram showing a schematic configuration of a main unit of an air conditioner, (B) A diagram showing the bottom surface of the main unit of an air conditioner DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air conditioning ventilation system of the present invention will be described with reference to the drawings. As shown in Figure 1, this air conditioning and ventilation system includes an air conditioner 1 that conditions the room R, a ventilation device 2 that ventilates the room R, and a return air supply unit 3 that supplies return air RA from the room R to the attic space CS between the ceiling C and the floor slab S on the upper floor.

[0019] The ceiling section C covers the upper side of the room R and is disposed at a height between the room R and the floor slab S on the upper floor, separating the room R from the attic space CS above it. The return air supply section 3 connects the room R with the attic space CS, and in this embodiment is constituted by a slit formed through the ceiling section C. As shown in FIG. 2(A), the ceiling section C is constituted by, for example, a ceiling substrate (not shown) such as a rough joist that is suspended and supported by hanging materials or the like from the underside of the floor slab S on the upper floor, and ceiling finishing materials c1 (see FIG. 2(A)) such as ceiling panels and decorative boards that are arranged and stretched on the underside of the ceiling substrate.

[0020] Returning to Fig. 1, the ventilation device 2 is configured to ventilate the room R through the attic space CS by supplying outside air OA to the attic space CS. The ventilation device shown in Fig. 1 is configured to supply outside air OA to the attic space CS and exhaust part of the air in the attic space CS to the outside of the building, etc. However, for example, instead of exhausting part of the air in the attic space CS to the outside of the building, the ventilation device may also be configured to directly exhaust the air in the room R to the outside of the building, etc.

[0021] This ventilation device 2 is equipped with an air intake path 21 and an exhaust path 22 that connect the outside of the building etc. to the attic space CS, an air intake fan (not shown) that supplies outside air OA to the attic space CS through the air intake path 21, and an exhaust fan (not shown) that exhausts part of the air in the attic space CS to the outside of the building etc. through the exhaust path 22.

[0022] In this embodiment, the ventilation device 2 is also provided with a total heat exchanger 23 that performs total heat exchange between the outside air OA flowing through the air supply path 21 and the air flowing through the exhaust path 22. The total heat exchanger 23 is disposed in the attic space CS. The total heat exchanger 23 recovers the sensible heat and latent heat of the air flowing through the exhaust path 22 into the outside air OA flowing through the air supply path 21, thereby reducing the air conditioning load of the air conditioner 1. The ventilation device 2 can have various configurations, such as one that omits the total heat exchange section 23 or one that adds a temperature control section that can freely adjust the temperature of the outside air OA flowing through the air supply path 21.

[0023] The air conditioner 1 has a main unit 11 that is placed on the ceiling C separately from the ventilation device 2. The main unit 11 is provided on the ceiling C in an arrangement such that the underside of the main unit 11, which faces the room R, is exposed to the room R through an installation opening formed in the ceiling C, and the upper side is embedded in the ceiling C. The main unit 11 can be supported by being suspended from the underside of the floor slab S on the upper floor side, for example, by a hanging member or the like.

[0024] As shown in Figures 2(A) and (B), the main unit 11 is equipped with an intake section 13 that draws in air from the ceiling space CS (a mixture of outside air OA and return air RA) through an intake port 12, an air conditioning section 14 that conditions the drawn-in air, and an outlet port 15 that blows the conditioned air SA into the room R. For example, the intake port 12 is disposed on the top surface of the main unit 11 that faces the ceiling space CS, and the outlet port 15 is disposed on the bottom surface of the main unit 11 that faces the room R. The intake section 13 is composed of a sirocco fan or the like that draws in air from above and blows it laterally. The air conditioning section 14 is composed of a heat exchanger or the like that adjusts the temperature of the air sent from the intake section 13 by exchanging heat with a heat medium sent from a heat source device or the like (not shown). The main unit 11 of the air conditioner 1 can have various configurations, such as a configuration in which a plurality of units are connected in parallel to a heat source machine or the like, or a configuration in which one unit is connected to a heat source machine or the like.

[0025] This air conditioning and ventilation system is equipped with an air conditioner 1, a ventilation device 2, and a return air supply unit 3, and as shown in Figure 1, the ventilation device 2 supplies outside air OA to the attic space CS, and ventilates the room R through the attic space CS by discharging part of the air in the attic space CS to the outside of the building, etc., and the main unit 11 of the air conditioner 1 installed in the ceiling C draws in the outside air OA supplied to the attic space CS by the ventilation device 2 and the return air RA from the room R supplied to the attic space CS by the return air supply unit 3 through the intake port 12 (see Figure 2(A)), conditions the air, and blows the conditioned air SA into the room R through the exhaust port 15 (see Figure 2(A)).

[0026] Therefore, while the air intake duct for the air conditioning unit 1 can be reduced, the air intake duct for the ventilation unit 2 does not need to connect the outside of the building to the air outlet installed in the ceiling C, and only needs to connect the outside of the building to the attic space CS, so the number and length of ducts can be further reduced and the air outlet for the ventilation unit 2 can also be reduced. Furthermore, in this embodiment, not only the air intake duct for the ventilation device 2 but also the exhaust duct for the ventilation device 2 do not need to connect the outside of the building, etc. to the air outlet installed in the ceiling C, but only need to connect the outside of the building, etc. to the attic space CS, so the number of ducts and duct length can be further reduced, and the air outlets for the ventilation device 2 can also be further reduced.

[0027] As shown in Figure 2(A), the main unit 11 of the air conditioner 1 is provided with an outer shell forming member 16 that houses various devices and forms the outer shell (outer surface), such as a box-shaped casing 16A that is arranged at a height position where its underside is approximately flush with the surface of the ceiling C or at a height position slightly higher than the surface of the ceiling C, and a panel 16B that has an air outlet 15 attached to the underside of the casing 16A. The outer casing forming member 16 may be, for example, a panel having an intake port 12 attached to the upper surface of the casing 16A instead of or in addition to the panel 16B attached to the lower surface of the casing 16A, or may be composed of only the casing 16A, and various configurations can be adopted to form the outer casing of the main unit 11.

[0028] 2(A), in this embodiment, suction port 12 is formed at approximately the center of the top surface of casing 16A, and suction unit 13 is disposed inside casing 16A below suction port 12. Air conditioning units 14 are disposed at multiple locations (for example, four locations on the front, back, left, and right) around suction unit 13 laterally outside inside casing 16A.

[0029] Furthermore, a filter 17 that removes foreign matter contained in the air sucked through the suction port 12 is detachably disposed inside the casing 16A in a region between the suction port 12 and the suction section 13. A filter replacement port 16a is formed on the side surface of the casing 16A, and as shown by the dotted line in Figure 2(A), an old filter 17 can be removed and a new filter 17 can be installed through the filter replacement port 16a.

[0030] 2(B), on the underside of the main unit 11 of the air conditioner 1, which faces the room R, the air outlets 15 are arranged in an outer peripheral region R1, and other components can be attached to a central region R2. The outer peripheral region R1 can be formed, for example, by a rectangular ring-shaped panel 16B attached to the underside of the casing 16A, and the multiple air outlets 15 are formed at multiple locations (for example, four locations on the front, back, left, and right) corresponding to the multiple air conditioning sections 14.

[0031] 2, the central region R2 can be configured as a flat surface or the like in the central portion of the underside of the casing 16A, but by forming the panel 16B attached to the underside of the casing 16A into a rectangular shape, the central region R2 can also be configured in the central portion of the panel 16B. This central region R2 can then be used as an attachment space for other components, such as lighting and other equipment, ceiling finishing material c1 (see FIG. 2(A)), wallpaper and other interior materials, and the like.

[0032] The main unit 11 of the air conditioning device 1 configured in this manner is not limited to being used simultaneously with the above-mentioned ventilation device 2, but can also be suitably used alone, for example, as an indoor unit of a multi-air conditioner for a building.

[0033] [Another embodiment] Other embodiments of the present invention will be described. Note that the configurations of the embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

[0034] (1) In the above embodiment, the air intake 12 is arranged on the top surface of the main unit 11 of the air conditioning unit 1, but it may also be arranged on the side surface, for example, and can be arranged in an appropriate location that can draw in air from the ceiling space CS.

[0035] (2) In the above embodiment, an example was shown in which the air outlet 15 is arranged in the peripheral region R1 on the underside of the main unit 11 of the air conditioner 1, but it may also be arranged, for example, in the central region R2, and can be arranged in an appropriate location where the conditioned air SA can be blown into the room R.

[0036] (3) In the above embodiment, the filter replacement port 16a is formed on the side surface of the casing 16A in the main unit 11 of the air conditioner 1, but for example, the filter 17 may be formed on the top surface of the casing 16A so that it can be replaced from the top side, and the filter 17 can be arranged in an appropriate location where it can be replaced. [Explanation of symbols]

[0037] 1 Air conditioner 2. Ventilation system 3 Return air supply section 11 Main unit 12 Intake port 13 Suction part 14 Air Conditioning Section 15 Air outlet 17 Filters C Ceiling CS Ceiling space OA Outside air R Indoor R1 outer region R2 central area RA return air SA Air after air conditioning

Claims

1. An air conditioning and ventilation system including an air conditioner that air-conditions a room and a ventilation device that ventilates the room, A return air supply unit is provided that supplies return air from the room to the ceiling space, The ventilation device is configured to ventilate the room through the attic space by supplying outside air to the attic space, the air conditioning device has a main unit that is arranged on a ceiling portion separately from the ventilation device, The air conditioning and ventilation system is provided with a main unit that includes a suction section that draws air from the ceiling space through an intake port, an air conditioning section that conditions the drawn-in air, and an outlet that blows the conditioned air into the room.

2. The air conditioning and ventilation system according to claim 1, wherein the air inlet of the main unit is disposed on an upper surface of the main unit facing the ceiling space.

3. 3. The air conditioning and ventilation system according to claim 1, wherein the main unit is provided with a filter for removing foreign matter contained in the air drawn in through the air inlet.

4. 3. The air conditioning and ventilation system according to claim 1, wherein the air outlets are arranged in a peripheral region on the underside of the main unit facing the indoor side, and other components are freely attached to a central region.

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