JP2011002104A - Air conditioning system - Google Patents

Abstract

To provide an air conditioning system that can cope with an individual's comfort and can take fresh air into a living room.
An ambient air conditioning system using a radiant panel that is arranged on the ceiling and circulates a refrigerant to adjust the overall environment of the room, and a blower provided on the floor after adjusting the air introduced from the outside. Among the outlets 31, the task air conditioning equipment 3 that locally adjusts the living room environment by being blown out from an arbitrary outlet 31 is provided, so that uneven temperature distribution and draft feeling are suppressed and individual comfort is provided. And fresh air can be taken into the living room.
[Selection] Figure 2

Description

  The present invention relates to an air conditioning system that adjusts the environment of a living room as a whole and also enables local adjustment.

  Conventionally adopted convection air conditioning systems heat-exchanged and heated air (hot air) from the outlet to warm the room, or heat-exchanged and cooled air (cold air). The room was cooled by blowing from the exit. However, since the convection type air conditioning system is premised on hot or cold air convection, the temperature distribution is uneven, and the airflow hits the human body to give a draft feeling (excessive thermal feeling). There was a thing.

  In order to solve such problems, nonflammable resin film ducts are laid in the underfloor space or ceiling space, and hot or cold air generated by an air conditioner or a heat storage heater is used for the lower surface of the floor material or the ceiling material. A radiation type air conditioning system for jetting the upper surface has been proposed. According to this radiant air conditioning system, the warm air or cold air after heating or cooling the flooring or ceiling material is blown out into the interior of the room to heat or cool the air in the interior of the room. It is designed to be circulated and used in a heater (for example, see Patent Document 1).

  A radiation type air conditioning system in which a radiation panel is arranged on the ceiling has been proposed. The radiant panel can circulate cold water or hot water (refrigerant), and can cool or warm the entire room by circulating cold water or hot water through the radiant panel.

JP 2005-337690 A

  However, since the feeling of comfort varies depending on the individual, even if the environment of the entire living room can be adjusted, the comfort of the individual cannot be accommodated. In addition, even in a radiation type air conditioning system that does not assume that air is taken in, it is necessary to take fresh air into the room.

  This invention is made in view of the above, Comprising: It aims at providing the air-conditioning system which can respond also to an individual's comfort feeling, and can also take in fresh air to the inside of a living room.

  In order to solve the above-described problems and achieve the object, the present invention introduces an ambient air conditioning facility with a radiant panel that is arranged on the ceiling and circulates a refrigerant to totally adjust the living room environment, and is introduced from the outside. After adjusting the air, it is provided with a task air-conditioning facility that locally adjusts the living room environment by blowing out from an arbitrary outlet among the outlets provided on the floor.

  Moreover, the present invention is characterized in that, in the above-mentioned invention, the task air conditioning equipment is provided with a function of adjusting an air outlet opening / closing means for opening or closing an arbitrary air outlet or an amount of air blown out.

  Moreover, the present invention is characterized in that, in the above-mentioned invention, the task air conditioning equipment has a function of adjusting the humidity of air blown out using a desiccant air conditioner.

  An air conditioning system according to the present invention is provided on a floor after adjusting ambient air conditioning equipment by a radiant panel that is arranged on the ceiling and circulates a refrigerant to adjust the overall environment of the living room and air introduced from the outside. The air conditioning system is equipped with a task air conditioning system that locally adjusts the living room environment by blowing from any air outlet. And fresh air can be taken into the living room.

  In the present technology, the shape of the member constituting the radiation panel and the shape of the panel itself are not limited, and heat radiation from the radiation panel includes a radiation component and a convection component, but the components are not limited.

FIG. 1 is a schematic configuration diagram showing an air conditioning system according to an embodiment of the present invention. FIG. 2 is a refrigerant circuit diagram showing the configuration of the air conditioning system shown in FIG. 1, and shows the operating state from the intermediate period to the summer. FIG. 3 is a refrigerant circuit diagram showing the configuration of the air conditioning system shown in FIG. 1 and shows the operating state from the intermediate period to the winter period.

  Embodiments of an air conditioning system according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a schematic configuration diagram showing an air conditioning system according to an embodiment of the present invention. 2 and 3 are refrigerant circuit diagrams showing the configuration of the air conditioning system shown in FIG. 1. FIG. 2 shows the operating state from the intermediate period to the summer, and FIG. 3 shows the intermediate period. It shows the operating state from winter to winter. In addition, the temperature shown in figure is an example and this invention is not limited.

  As shown in FIG. 1, the air conditioning system according to the present embodiment is an air conditioning system suitable for an interior (internal space) that requires constant cooling, such as an office with a large internal load, and includes a heat source 1 (FIG. 2). 3), an ambient air conditioning facility by the radiation panel 2, and a task air conditioning facility 3.

  The heat source 1 includes a refrigerator (not shown) and a cooling tower (not shown), and supplies cold water by operating the refrigerator from the intermediate period to the summer as shown in FIG. 2 (normal operation of the heat source) Mode), as shown in FIG. 3, by using a cooling tower from the intermediate period to the winter period, cold water is supplied using outside air (heat source free cooling mode).

  As shown in FIG. 2 and FIG. 3, the cold water supplied from the heat source 1 exchanges heat with the task air conditioner 3, and then exchanges heat with the heat exchanger 21 that supplies cold water to the radiation panel 2. It is supposed to be.

  The ambient air conditioning equipment by the radiation panel 2 adjusts the living room environment (ambient area) as a whole, and is arranged on the ceiling as shown in FIG. The radiation panel 2 is provided with a pipe (not shown) for circulating water (refrigerant), and heat is taken away from the radiation panel 2 when water is circulated. As shown in FIGS. 2 and 3, the radiant panel 2 is connected to the heat exchanger 21, and the water that has been heat-exchanged and cooled by the heat exchanger 21 circulates through the radiant panel 2. ing.

  Specifically, the water that has been subjected to heat exchange in the heat exchanger 21 and cooled to about 18 ° C., for example, is supplied to the radiation panel 2, and heat is taken away from the radiation panel 2. Then, for example, water heated to about 20 ° C. is discharged to the heat exchanger 21, and heat is again exchanged in the heat exchanger 21.

  On the other hand, water that has been subjected to heat exchange in the heat exchanger 21 and has been heated to, for example, about 19 ° C. is supplied to the heat source 1 again.

  The task air conditioner 3 adjusts the living room environment locally and adjusts the air (outside air) OA introduced from the outside, and then blows it out from the air outlet 31 provided on the floor. The floor to which the air conditioning system according to the present embodiment is applied is provided with an outlet 31 for each predetermined area (for example, an area occupied by one person). In addition, a slit (not shown) is provided on the perimeter side of the floor (a part that is susceptible to thermal influence from the outer wall) as necessary.

  Each air outlet 31 is provided with air outlet opening / closing means (not shown) for arbitrarily opening or opening the air outlet 31. The air outlet opening / closing means can be arbitrarily selected from those linked with the human sensor, those linked with the PC, and manually opened / closed. For example, the air outlet opening / closing means linked with the human sensor opens the air outlet 31 when the presence of a person is detected in a predetermined area, and closes the air outlet 31 when the presence of a person cannot be detected within the predetermined area. It is supposed to be. Further, the air outlet opening / closing means interlocked with the PC opens and closes the air outlet 31 by an operation from the PC, and in some cases, the air outlet 31 so as to be in the surrounding environment of each person's preference. Can be opened at any opening. Further, the air outlet opening / closing means that is manually opened and closed can open the air outlet 31 at an arbitrary opening degree and can be operated by hand or foot.

  As shown in FIGS. 2 and 3, the task air conditioner 3 includes a desiccant air conditioner 4. The desiccant air conditioner 4 dehumidifies outside air taken from outside using a desiccant rotor (not shown), and has a dehumidifying passage 41 for dehumidifying the outside air and a regeneration passage 42 for regenerating the desiccant rotor. . The outside air OA introduced into the desiccant air conditioner 4 from the outside is dehumidified by passing through the dehumidifying passage 41 and supplied to the heat exchanger 32. And the air supplied to the heat exchanger 32 is heat-exchanged in the heat exchanger 32, and the cooled air (supply air) SA is blown out from the blower outlet 31 opened under the floor. . In this description, the humidity adjustment is performed by the desiccant air conditioner, but the implementation of the present technology is not limited to the desiccant air conditioner.

  The desiccant air conditioner 4 is connected to the ceiling of the living room via the blower 33. When the blower 33 is operated, air (return air) RA in the living room is supplied to the desiccant air conditioner 4. Yes. The return air RA supplied to the desiccant air conditioner 4 passes through the regeneration passage 42 to regenerate the desiccant rotor, and then is exhausted to the outside as exhaust EA.

  On the other hand, the water that has been heat-exchanged and heated in the heat exchanger 32 is supplied to the heat exchanger 21 that supplies cold water to the radiation panel 2.

  The air conditioning system according to the embodiment described above is a task air conditioning system in which the ambient temperature in the living room is maintained at an air temperature of 28 ° C., and the sensible temperature is maintained at about 25 ° C. by the cold radiation of the radiation panel 2 on the ceiling surface. By using 3, the predetermined area is made to correspond to the comfort of the individual.

  Moreover, since the task air conditioner 3 adjusts the air (outside air) OA introduced from the outside and then blows out from the air outlet 31 provided on the floor, fresh air can be supplied to the living room. When the amount of air blown from the blowout port 31 is small, air is blown out from a slit provided on the perimeter side of the floor.

  Furthermore, since the task air conditioner 3 includes the desiccant air conditioner 4, the dehumidified air is supplied to the living room from the intermediate period to the summer period.

  According to the air conditioning system which is an embodiment mentioned above, while suppressing unevenness of temperature distribution and a draft feeling, it can respond to an individual's comfort feeling, and fresh air can also be taken into the room interior. In addition, since the air (supply air) SA dehumidified by the desiccant air conditioner 4 is blown out from the air outlet 31, the interior of the room is dehumidified and the radiation panel can be prevented from being condensed due to a temperature difference.

  Moreover, since the living room environment is adjusted as a whole using the radiation panel 2, it is possible to increase the chilled water supply temperature from the heat source 1 as compared with a conventional air conditioning system (an air conditioning system mainly including a convection air conditioning system). Therefore, high efficiency operation of the heat source 1 is possible. In addition, by using the cooling tower, the period during which cold water can be supplied using outside air is longer than that of the convection type air conditioning system, and the operation period of the refrigerator can be shortened (energy saving).

  Further, the cold water discharged from the heat exchanger 32 constituting the task air conditioning equipment 3 is cascaded and supplied to the heat exchanger 21 that supplies the cold water to the radiation panel 2. For this reason, a coefficient of performance (COP) improves.

DESCRIPTION OF SYMBOLS 1 Heat source 2 Radiation panel 21 Heat exchanger 3 Task air-conditioning equipment 31 Outlet 32 Heat exchanger 33 Blower 41 Dehumidification passage 42 Regeneration passage 4 Desiccant air conditioner OA Outside air SA Supply air RA Return air EA Exhaust

Claims (3)

Ambient air-conditioning equipment with a radiant panel that adjusts the overall living room environment by circulating the refrigerant on the ceiling,
After adjusting the air introduced from the outside, it is equipped with a task air conditioning system that locally adjusts the living room environment by blowing from any of the outlets provided on the floor Air conditioning system.   2. The air conditioning system according to claim 1, wherein the task air conditioning equipment includes a function of adjusting an air outlet opening / closing means for opening or closing an arbitrary air outlet or an amount of blown air.   The air conditioning system according to claim 1 or 2, wherein the task air conditioning equipment has a function of adjusting humidity of air blown out using a desiccant air conditioner.

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