JP2013194947A - Air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning system capable of air-conditioning a plurality of living zones by radiant heat without generating a difference of air-conditioning effects.SOLUTION: An air-conditioning system includes: an outdoor unit 10 installed outside a house 1; an indoor unit 12 cooling or heating air within the house 1; a chamber box 14 installed in an underfloor space U below the indoor unit 12; a plurality of ducts 20A-20D installed corresponding to living zones 31-33; a plurality of fans 142 supplying air supplied to the chamber box 14 to the ducts 20A-20D; and a controller 50 controlling operations of the fans 142. The ducts 20A-20D are opened in the underfloor space U below the corresponding living zones 31-33. Air supply ports 40 for supplying air supplied to the underfloor space U to the living zones 31-33 are formed on the floor faces of the living zones 31-33.

Description

  The present invention relates to an air conditioning system, and more particularly to an air conditioning system for cooling or heating a living space of a house.

  2. Description of the Related Art Conventionally, a technique is known in which air cooled or heated by an indoor unit is branched by a branch chamber and supplied to a plurality of rooms (for example, see Patent Document 1 and Patent Document 2). However, these technologies directly supply air cooled or heated by an indoor unit to each room, and do not realize comfortable cooling and heating by radiant heat.

  There is also known a technique in which an indoor unit is installed in a space under the floor and the room is cooled and heated via a floor material (see, for example, Patent Document 3). However, with this technique, the cooling / heating effect is weakened far from the indoor unit, and it is difficult to uniformly cool / heat a plurality of rooms. For this reason, there exists a problem that a difference arises in the air-conditioning effect in each room.

JP-A-10-160198 JP 2008-069555 A JP 2009-281613 A

  The present invention has been made in view of the problems of the prior art as described above, and an object thereof is to provide a cooling / heating system capable of cooling / heating a plurality of living zones with radiant heat without causing a difference in the cooling / heating effect. To do.

  According to one aspect of the present invention, there is provided an air conditioning system that can heat and cool a plurality of living zones with radiant heat without causing a difference in the air conditioning effect. This air conditioning system is used to cool or heat the interior of a house having an underfloor space insulated from the outside. The air conditioning system includes an outdoor unit installed outside the house, an indoor unit that cools or heats the air in the house by heat exchange with a heat medium from the outdoor unit, and the under floor below the indoor unit A chamber box installed in the space and a plurality of ducts provided corresponding to a plurality of living zones are provided. The chamber box is supplied with air cooled or heated by the indoor unit. One ends of the plurality of ducts are connected to the chamber box. The air conditioning system further includes a plurality of fans that supply the air supplied to the chamber box to the corresponding plurality of ducts, and a controller that controls operations of the plurality of fans. The other ends of the plurality of ducts are opened in the underfloor space below the corresponding plurality of living zones.

  The indoor unit may include a cross flow fan that supplies the cooled or heated air to the chamber box. It is preferable that an air supply port for supplying air supplied to the underfloor space from the other end of the plurality of ducts to the plurality of living zones is formed on the floor surface of the plurality of living zones. In this case, it is preferable that the air supply port is formed below the window of the house. Furthermore, it is preferable that concrete is laid in the lower part of the underfloor space.

  The controller is preferably capable of independently controlling the operations of the plurality of fans. Moreover, it is preferable that the controller can control the rotation speeds of the plurality of fans independently. In this case, the controller may control the rotational speed of the plurality of fans so that the amount of air supplied from the other end of the plurality of ducts to the underfloor space is the same.

  The inner wall of the chamber box is preferably covered with a heat insulating material. The plurality of fans are preferably installed inside the chamber box.

  According to the present invention, the indoor unit can supply cooling air or heated air to the underfloor space below the plurality of living zones, so that the plurality of living zones can be cooled and heated by the radiant heat of the cooling air or heated air. . Thereby, comfortable air conditioning by radiant heat is realizable. In this case, since cooling air or heating air is transferred using a plurality of fans, cooling air or heating air can be reliably supplied to a plurality of living zones, and air conditioning between a plurality of living zones is possible. It is possible to prevent a difference in effect from occurring.

It is a figure which shows the whole structure of the house to which the air-conditioning system in one Embodiment of this invention is applied. It is sectional drawing which shows the chamber box of the air conditioning system shown in FIG. FIG. 3 is a top view of the chamber box of FIG. 2. It is a front view of the chamber box of FIG. It is a front view which shows the indoor unit of the air conditioning system shown in FIG. It is a bottom view of the indoor unit of FIG.

  Hereinafter, an embodiment of an air conditioning system according to the present invention will be described in detail with reference to FIGS. 1 to 6. 1 to 6, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  Drawing 1 is a figure showing the whole house 1 composition to which the air-conditioning system in one embodiment of the present invention is applied. As shown in FIG. 1, an outdoor unit 10 is installed outside the house 1, and an indoor unit 12 is installed in the living space of the house 1. Although details are not illustrated, the indoor unit 12 is connected to the outdoor unit 10, and cools or heats the air in the living space by heat exchange with the heat medium from the outdoor unit 10. As this indoor unit 12, a general-purpose wall-mounted indoor unit equipped with a cross flow fan can be used.

  Here, concrete 2 is spread below the underfloor space U of the house 1, and a heat insulating material 3 is provided on the side of the underfloor space U. With this structure, the underfloor space U is insulated from the outside of the house 1. In addition, a plurality of living zones (rooms) 31 to 33 are provided inside the house 1.

  As shown in FIG. 1, a chamber box 14 is installed in the underfloor space U below the indoor unit 12. 2 is a sectional view showing the chamber box 14, FIG. 3 is a top view, and FIG. 4 is a front view. As shown in FIGS. 2 to 4, the chamber box 14 is attached to the rectangular parallelepiped casing 140, the four duct connecting portions 141 provided on the side surface of the casing 140, and the respective duct connecting portions 141. And a fan 142. These fans 142 are installed inside the chamber box 14. An introduction port 143 is formed on the upper surface of the housing 140. In addition, the inner wall of the housing 140 is covered with a heat insulating material 144.

  5 is a front view of the indoor unit 12, and FIG. 6 is a bottom view. As shown in FIG. 5, the indoor unit 12 includes a rectangular parallelepiped housing 120, an indoor unit main body 121 housed in the housing 120, and an air filter 122 provided in front of the housing 120. ing. As shown in FIG. 6, a blower outlet 123 is formed at a position corresponding to the inlet 143 of the chamber box 14 at the lower portion of the housing 120. The outlet 123 is connected to the inlet 143 on the upper surface of the chamber box 14 described above. As described above, a general-purpose wall-mounted indoor unit including a cross flow fan can be used as the indoor unit main body 121.

  Air in the living space is taken into the indoor unit main body 121 through the air filter 122 and cooled or heated by heat exchange with the heat medium from the outdoor unit 10. The cooled or heated air is supplied from the blower outlet 123 into the chamber box 14 through the inlet 143.

  As shown in FIG. 1, ducts 20 </ b> A, 20 </ b> B, 20 </ b> C, and 20 </ b> D are connected to the duct connection portion 141 of the chamber box 14. In the example shown in FIG. 1, the duct 20 </ b> A corresponds to the living zone 31 and is opened in the underfloor space U below the living zone 31. The ducts 20 </ b> B and 20 </ b> C correspond to the living zone 32 and are opened in the underfloor space U below the living zone 32. The duct 20 </ b> D corresponds to the living zone 33 and is opened in the underfloor space U below the living zone 33. In addition, in order to cool or heat each living zone uniformly, it is preferable to open each duct at substantially the center of the corresponding living zone.

  As shown in FIG. 1, a controller 50 is provided in the vicinity of the indoor unit 12, and the controller 50 controls the operation and rotation speed of the fan 142 in the chamber box 14. In the example shown in FIG. 1, the controller 50 is provided in the vicinity of the indoor unit 12. However, the controller 50 is not limited to this, and the controller 50 is located in a living zone different from the living zone in which the indoor unit 12 is provided. May be installed. Or you may install the controller 50 for every living zone.

  As shown in FIG. 1, an air supply port 40 that supplies air in the underfloor space U to the living zones 31 to 33 is formed on the floor surface F of each of the living zones 31 to 33. Thereby, the cooled or heated air is supplied to the living zones 31 to 33 from the underfloor space U. In particular, if these air supply ports 40 are formed below the window 4, cold draft generated in the vicinity of the window 4 by supplying heated air from the air supply port 40 can be suppressed.

  When the air conditioning system having such a configuration is operated, the outdoor unit 10, the indoor unit 12, and the fan 142 in the chamber box 14 are driven. Thereby, the air in the living zone 32 is taken into the indoor unit 12 and is cooled or heated by heat exchange with the heat medium from the outdoor unit 10. Air cooled or heated by the indoor unit 12 is supplied to the inside of the chamber box 14, and is supplied to the underfloor space U by the fan 142 through the respective ducts 20A, 20B, 20C, and 20D.

  The corresponding living zones 31 to 33 are cooled or heated through the floor surface F by the radiant heat of the cooling air or heating air supplied to the underfloor space U by the ducts 20A, 20B, 20C, and 20D. At the same time, cooling air or heated air is supplied from the air supply port 40 to each of the living zones 31 to 33, thereby also cooling or heating the living zones 31 to 33.

  Here, the lengths of the ducts 20A, 20B, 20C, and 20D are not necessarily the same, and the diameters may not be the same. In such a case, since the pipe resistance of each duct 20A, 20B, 20C, 20D is different, when the fan 142 in the chamber box 14 rotates at the same rotational speed, each duct 20A, 20B, The amount of air supplied to the underfloor space U from 20C and 20D is different, and a difference in the cooling / heating effect occurs between the living zones 31 to 33. In order to eliminate such a difference in heating and cooling effects, for example, the rotation speeds of the plurality of fans 142 may be independently controlled by the controller 50. That is, the rotational speed of each fan 142 may be controlled so that the amount of air supplied from the plurality of ducts 20A, 20B, 20C, and 20D to the underfloor space U is the same.

  In addition, by independently controlling the rotation speeds of the plurality of fans 142 by the controller 50, it becomes possible to make the air conditioning in a specific living zone stronger or weaker than other living zones. For example, when heating of the living zone 31 is strengthened and heating of the living zones 32 and 33 is weakened, the rotation speed of the fan that supplies the heated air to the duct 20A corresponding to the living zone 31 is set to the rotation speed of other fans. Make it faster than speed.

  In addition, by controlling the operations of the plurality of fans 142 independently by the controller 50, it becomes possible to cool or heat only a specific living zone. For example, when only the residential zone 31 is heated and the residential zones 32 and 33 are not heated, only the fan that supplies heated air to the duct 20A corresponding to the residential zone 31 is operated, and the other fans are stopped.

  As described above, in this embodiment, a general-purpose wall-mounted indoor unit equipped with a cross-flow fan can be used as an indoor unit, and it is not necessary to prepare a special indoor unit. Can be reduced.

  Moreover, since the concrete 2 is spread under the underfloor space U insulated from the outside of the house 1, the heat of the cooling air or heating air introduced into the underfloor space U from the ducts 20A, 20B, 20C, 20D is Heat is stored in the concrete 2. Therefore, even after the air conditioning system is stopped, the underfloor space U and the living zones 31 to 33 can be maintained at a comfortable temperature by the heat stored in the concrete 2.

  As described above, according to the present embodiment, the cooling air or the heating air can be supplied to the underfloor space below the plurality of living zones by the indoor unit. Therefore, the plurality of living zones are generated by the radiant heat of the cooling air or the heating air. Can be air-conditioned. Thereby, comfortable air conditioning by radiant heat is realizable. In this case, since cooling air or heating air is transferred using a plurality of fans, cooling air or heating air can be reliably supplied to a plurality of living zones, and air conditioning between a plurality of living zones is possible. It is possible to prevent a difference in effect from occurring.

  Note that the number of ducts, fans, and living zones is not limited to the example described above. Further, the positions of the indoor unit and the chamber box are not limited to the above-described examples. Furthermore, the living zone may be defined in any manner as long as it is a certain area in the house.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and it goes without saying that the present invention may be implemented in various forms within the scope of the technical idea.

DESCRIPTION OF SYMBOLS 1 House 2 Concrete 3 Heat insulating material 4 Window 10 Outdoor unit 12 Indoor unit 14 Chamber box 20A, 20B, 20C, 20D Duct 31-33 Living zone 40 Air supply port 50 Controller 120 Case 121 Indoor unit main body 122 Air filter 123 Outlet 140 Housing 141 Duct connection 142 Fan 143 Inlet 144 Heat insulating material F Floor U Underfloor space

Claims (10)

An air conditioning system that cools or heats the interior of a house having an underfloor space insulated from the outside,
An outdoor unit installed outside the house;
An indoor unit that cools or heats the air in the house by heat exchange with the heat medium from the outdoor unit;
A chamber box installed in the under-floor space below the indoor unit, the chamber box being supplied with air cooled or heated by the indoor unit;
A plurality of ducts provided corresponding to a plurality of living zones, one end of which is connected to the chamber box;
A plurality of fans for supplying the air supplied to the chamber box to the corresponding plurality of ducts;
A controller for controlling operations of the plurality of fans;
With
The other ends of the plurality of ducts are opened in the underfloor space below the corresponding plurality of living zones.
An air conditioning system characterized by that.   The air conditioning system according to claim 1, wherein the indoor unit includes a cross flow fan that supplies the cooled or heated air to the chamber box.   The floor surface of the plurality of living zones is formed with an air supply port for supplying air supplied to the underfloor space from the other end of the plurality of ducts to the plurality of living zones. Item 3. The air conditioning system according to item 1 or 2.   The air conditioning system according to claim 3, wherein the air supply port is formed below a window of the house.   The air conditioning system according to any one of claims 1 to 4, wherein concrete is laid in a lower part of the underfloor space.   The air conditioning system according to any one of claims 1 to 5, wherein the controller is capable of independently controlling operations of the plurality of fans.   The air conditioning system according to any one of claims 1 to 6, wherein the controller can independently control the rotation speeds of the plurality of fans.   8. The controller according to claim 7, wherein the controller controls the rotational speed of the plurality of fans so that the amount of air supplied from the other end of the plurality of ducts to the underfloor space is the same. Air conditioning system.   The air conditioning system according to any one of claims 1 to 8, wherein an inner wall of the chamber box is covered with a heat insulating material.   The air conditioning system according to any one of claims 1 to 9, wherein the plurality of fans are installed inside the chamber box.

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